WO2018212031A1

WO2018212031A1 - Damper device

Info

Publication number: WO2018212031A1
Application number: PCT/JP2018/017883
Authority: WO
Inventors: 隆司原田; 林　勝彦
Original assignee: 日本電産サンキョー株式会社
Priority date: 2017-05-16
Filing date: 2018-05-09
Publication date: 2018-11-22
Also published as: JP2018194221A; CN110603416A

Abstract

A damper device is provided which can operate in a narrow space without the rotation space of the louvers being affected by the opening area of the damper device and which has reduced product dimensions in the plane direction of the gearbox. Specifically, this damper device is characterized by being provided with a drive source (40), multiple louvers (20), a frame body (10) and a power transmission mechanism (50). The frame body has a pair of openings (11, 12), the louvers are arranged in parallel in a flow path unit, the power transmission mechanism includes multiple gear members, and the frame body has a gearbox (10n), which is a case body in which the aforementioned multiple gear members are housed; the internal space of the gearbox is divided into multiple layers in the axial direction of the multiple gear members, and a reduction geartrain is configured by some of the multiple gear members housed in each layer passing through the housing layer and engaging with a gear member housed in another layer.

Description

Damper device

The present invention relates to a damper device.

The following Patent Document 1 discloses a refrigerator provided with a damper device that controls a flow path of cool air circulating in the warehouse.

JP 2009-002545 A

The damper device of Patent Document 1 includes a single baffle, and rotates this to connect or block the cool air flow path. Therefore, in the damper device of Patent Document 1, the rotation space of the baffle increases in proportion to the opening area, and securing the rotation space of the baffle becomes a problem when providing a large opening area. For example, when the condensed water staying at the bottom freezes, the accumulation of the condensed water may hinder the opening and closing operation of the slats. Moreover, the drive part which rotates a baffle is a structure which has arrange | positioned the motor and gear to the case in the plane direction. Therefore, in the damper device of Patent Document 1, it may be necessary to reduce the size of the drive unit including the drive mechanism by design.

In view of the above problems, the problem to be solved by the present invention is that the rotational space of the slats is not easily influenced by the opening area of the damper device, can be operated in a narrow space, and the product dimensions in the plane direction of the gear box It is an object of the present invention to provide a damper device that can reduce the size of the damper.

In order to solve the above problems, a damper device according to the present invention includes a drive source, a plurality of blades, a frame that rotatably supports the blades, and a driving force of the drive source. And a power transmission mechanism that rotates each of the slats, and the frame body has a pair of openings that are a fluid inlet and outlet, and the frame When the hollow portion communicating with the pair of openings in the body is used as the flow path portion of the frame body, the plurality of blades are arranged in parallel in the flow path portion, and the power transmission mechanism Includes a plurality of gear members, the frame body includes a gear box that is a case body in which the plurality of gear members are accommodated, and an internal space of the gear box includes a plurality of gear members in an axial direction of the plurality of gear members. Divided into layers, the plurality of gear members housed in each of the layers Said gear member by said gear member meshed housed in the other layers through the contained layers, characterized in that it constitutes a series of the reduction gear train.

By dividing the wing plate that opens and closes the fluid flow path into a plurality of pieces, even when the opening area of the damper device is increased, it is possible to suppress the expansion of the wing plate rotation space. As a result, the damper device of the present invention can easily secure the space for rotating the slats and can be installed in a narrower space.

Further, by dividing the internal space of the gear box into a plurality of layers in the axial direction of the plurality of gear members, the spread of the reduction gear train in the plane direction is changed to the height direction, and the gear box in the same plane direction is changed. The dimensions can be reduced. Thereby, the damper apparatus of this invention can reduce a product in size.

Further, the gear box is formed by fitting a plurality of case members, and the fitting portion of the plurality of case members includes an inner peripheral surface of one case member and an outer peripheral surface of the other case member. It is preferable that they are fitted so as to face each other in the thickness direction.

It is possible to prevent water from entering the gear box by fitting the plurality of case members so as to face each other in the thickness direction.

Further, it is preferable that the gear box is constituted by three case members.

The plurality of gear members include a pinion gear of the drive source, and the first gear that is the gear member that directly meshes with the pinion gear is accommodated in another layer through the accommodated layer. It is preferable to mesh with the gear member.

The first gear directly meshed with the pinion gear penetrates the case member constituting the accommodated layer and meshes with the gear member accommodated in the other layer, whereby the first gear directly meshed with the pinion gear is obtained. The penetrating part can be shifted. Therefore, the freedom degree of the gear arrangement of the next layer is increased.

Further, the partition wall that separates the layer in which the pinion gear is accommodated from the other layer is provided with a covered cylindrical projection protruding to the other layer side, and the first gear partly includes The protrusion is accommodated in a cylinder, and the protrusion is partially cut away in the circumferential direction, from which the first gear is exposed in the other layer, and the support shaft of the first gear It is preferable that one end portion is fixed to the lid portion of the protruding portion.

The first gear is accommodated in the same layer as the pinion gear in which one end of the support shaft is fixed to the lid of the projection, and a part of the first gear is cut out in the projection. It is exposed in the other layer from the part. Thereby, a 1st gearwheel can be arrange | positioned in the position which does not receive a restriction | limiting in the position where the pinion gear is arrange | positioned. Therefore, the freedom degree of the gear arrangement of the next layer is increased.

Further, it is preferable that the power transmission mechanism has a link mechanism disposed in the flow path portion, and a swing range of the link mechanism is within the flow path portion.

The link mechanism, which is a driving member for a plurality of slats, is configured so that the swinging operation is performed in the flow path portion of the frame body, and the mechanism is not protruded outside the frame body. The degree of freedom is increased.

Further, the power transmission mechanism has a link mechanism connected to the plurality of blades, and the power transmission mechanism is further connected to the link mechanism, so that the driving force of the drive source is applied to the link mechanism. The frame has a link drive member that is a transmitting member, and the frame body includes a plurality of blade support portions that are support portions of the respective blade plates, and a link drive member support portion that is a support portion of the link drive member. It is preferable that the plurality of blade support parts and the link driving member support part are integrally formed with the frame body.

Since the blade support part and the link driving member support part are integrally formed with the frame body, the relative positional relationship between the blades and the link mechanism can be kept constant. Thereby, the influence on the positional accuracy of these members due to dimensional errors and assembly errors can be suppressed, and the smooth operation of the slats can be ensured.

Further, the power transmission mechanism has a link mechanism connected to the plurality of blades, and the power transmission mechanism is further connected to the link mechanism, so that the driving force of the drive source is applied to the link mechanism. The link mechanism has a link drive member that is a member to transmit, and when the dimension of each slat in the direction parallel to the rotation center line is the length of the slat, the link mechanism is the link drive member It is preferable to have a first link member that is connected to the first link member, and a second link member that connects the first link member and one end in the length direction of each slat.

Since the link mechanism has the first link member and the second link member, the first link member serves as a drive link, the second link member serves as an intermediate link, the frame body serves as a fixed link, and each wing plate serves as a driven link 4 A knot link mechanism can be configured. Thereby, it becomes possible to synchronize the rotation operation of each slat with a simple structure.

Further, the power transmission mechanism has a link mechanism connected to the plurality of blades, and the power transmission mechanism is further connected to the link mechanism, so that the driving force of the drive source is applied to the link mechanism. A link driving member serving as a transmission member; and the link driving member includes a gear portion and an output shaft portion, and the driving force of the driving source is driven by the plurality of gear members. The gear portion of the link driving member and the gear member are housed in the gear box, and the gear portion of the link driving member or the gear member, and the gear box, the link driving member is predetermined. It is preferable to have a stopper portion that abuts against each other and interrupts transmission of the driving force when the angular position is reached.

When the wing plate reaches its rotation limit angle, by blocking the transmission of the driving force with the power transmission member before the link mechanism, it is prevented that excessive stress is applied to the wing plate and the link mechanism, It is possible to suppress a decrease in the component life of the slats and the link mechanism.

Further, the power transmission mechanism has a link mechanism connected to the plurality of blades, and the power transmission mechanism is further connected to the link mechanism, so that the driving force of the drive source is applied to the link mechanism. A link driving member that is a transmitting member, and when the dimension of each wing plate in the direction parallel to the rotation center line is the length of the wing plate, A first shaft portion that is a shaft portion protruding in the length direction is formed at both ends, and the frame body includes a plurality of blade support portions that are support portions of the blade plates, and the link drive. A link drive member support part that is a support part of the member, the link drive member support part is a bearing that rotatably supports the link drive member, and the plurality of blade support parts are Each is a bearing that rotatably supports the first shaft portion, and the link drive Shaft hole direction of the wood support, and the shaft hole direction of each vane plate supporting portion preferably extends in a direction which is a straight line or in parallel.

The axial hole direction of these link drive member support parts and each slat support part is the same direction, so that the driving force can be efficiently transmitted, and the load applied to each member such as the twist of the slats is applied. Can be suppressed.

Further, the frame body has a plurality of slat support parts that are support parts of the slats, and protrudes in the length direction at both ends in the length direction of the slats. A first shaft portion, which is a shaft portion supported by the plate support portion, is formed. One end of each of the blades in the length direction protrudes in the length direction and is connected to the second link member. A second shaft portion that is a shaft portion is formed, and when the width in the direction perpendicular to the length direction on the front surface or the back surface of each blade plate is the width of the blade plate, It is preferable that the 2nd axial part is arrange | positioned at the both ends in the width direction of each said blade.

Since these shaft portions are provided at both ends in the width direction of each slat, the slat can be rotated with a minimum driving force and the operation accuracy of the slat can be improved.

In the damper device of the present invention, the rotation space of the slats is not easily influenced by the opening area of the damper device, it can be operated in a narrow space, and the product dimension in the plane direction of the gear box can be reduced.

It is a top view showing a schematic structure and operation of a damper device concerning an embodiment. It is the external appearance perspective view which shows the shape of a slat, and the side view sectional drawing explaining a 2nd axial part. It is the top view which shows the shape of a flame | frame, side view sectional drawing, and a bottom view. It is a disassembled perspective view of the damper device concerning an embodiment. It is a permeation | transmission top view which shows the reduction gear structure of a gear member. It is a side view which shows the structure of a stopper part. It is a side view which shows rocking | fluctuation operation | movement of a link mechanism. It is side surface sectional drawing explaining the opening angle of the insertion port of a slat board support part, and a drain outlet. It is a sectional view in plan view showing the structure of the link drive member support. It is side surface sectional drawing which shows the structure of a gear box. It is a schematic diagram which shows the modification of a link drive member. It is a top view sectional view showing the structure at the time of the assembly of a damper device. It is side view sectional drawing which shows the shape of a flame | frame. It is sectional drawing seen from the side which shows the structure of a protective cover and a flame | frame. It is a schematic diagram which shows the modification of a slat support part. It is a perspective view which shows the structure of a connector part. It is a disassembled perspective view which shows the structure of a connector part.

Hereinafter, embodiments of a damper device according to the present invention will be described with reference to the drawings. The damper device D according to this embodiment is disposed inside a refrigerator (not shown) and controls the circulation of cold air in the refrigerator. The damper device D of the present embodiment is used, for example, by being fitted between a middle position of a flow path of cold air flowing through a duct of a refrigerator or between a duct and a storage chamber. The application target of the damper device of the present invention is not limited to a refrigerator, and can be applied to a wide range of equipment and facilities for the purpose of opening and closing a fluid flow path and adjusting the flow rate.

<Overview of overall configuration>
FIG. 1 is a plan view showing a schematic configuration and operation of a damper device D according to the present embodiment. FIG. 1A shows the damper device D with the slat 20 closed, and FIG. 1B shows the damper device D with the slat 20 open.

The damper device D includes three slats 20 and a frame 10 that is a frame that rotatably supports these slats 20. The frame 10 is formed with a first opening 11 and a second opening 12 which are a pair of openings that allow the inside of the frame 10 and the duct to communicate with each other. Cold air flows into the frame 10 of the present embodiment from the second opening 12 and out of the first opening 11. The slats 20 in this embodiment are arranged in parallel so as to follow the first opening 11 of the frame 10. These slats 20 are rotated by the driving force of the motor 40 provided in the damper device D to open and close the first opening 11.

The frame 10 is formed with a frame plate. A bottom plate 10j and a partition wall 10f are formed on the frame plate, and the wing plate 20 is accommodated. The bottom plate 10j is formed to be a bottom when the damper device D is installed. Further, the partition wall 10f is formed upright from the bottom plate 10j. A first opening 11 reinforced by two ribs 10h is formed at the center of the partition wall 10f, and the first opening 11 can be covered with the wing plate 20 by the partition wall 10f. The opening area is adjusted to the extent. The partition 10 f is not provided on the second opening 12 side of the frame 10, so that the opening area of the second opening 12 is formed wider than the first opening 11 by the partition 10 f.

Further, the frame 10 and the slat 20 are made of the same resin material. Therefore, it is possible to suppress the influence of misalignment between the frame 10 and the plurality of slats 20 caused by the shape expansion and contraction due to thermal change. For example, in the length direction of the frame 10 on which the slat 20 is rotatably supported, it is possible to suppress the occurrence of rotational malfunction due to rattling of the slat 20 or locking of the slat 20. Similarly, in the clearance between the shaft hole of the frame 10 to which the slat 20 is attached and the shaft part of the slat 20, a malfunction of the rotation due to the backlash of the slat 20 or the locking of the slat 20 occurs. Can be suppressed. Thereby, the flame | frame 10 and the slat 20 can reduce the malfunction by thermal expansion. Here, the length direction of the frame 10 and the slat 20 refers to a direction parallel to the X-axis direction in the coordinate axis display of FIG.

In the damper device D, a plate-like member that opens and closes the first opening 11 (a member corresponding to a baffle in Patent Document 1) is divided into a plurality of blades 20. For this reason, even when the opening area of the damper apparatus D becomes large, the rotation space of each blade 20 can be kept constant by increasing the number of blades 20. Thereby, the damper device D facilitates securing the rotation space of the slats 20 and can appropriately operate the slats 20 even in a narrow space.

<Configuration of slats>
FIG. 2 is an external perspective view showing the shape of the slats and a cross-sectional side view for explaining the second shaft portion. FIG. 2A is an external perspective view showing the shape of the slat 20, and FIG. 2B is a cross-sectional side view for explaining the formation position of the second shaft portion 22 in the slat 20.

The slat 20 is an elongated plate-like member. In the following description, in the direction parallel to the rotation center line a of the slat 20, the dimensions excluding the second shaft part 22 and the first shaft part 21 f and the first shaft part 21 l described later are the length of the slat 20. l, the dimension in the thickness direction of the slat 20 is referred to as the thickness t1 of the slat 20, and the dimension in the direction perpendicular to the length l direction on the front surface 20a or the back surface 20b of the slat 20 is referred to as the width w of the slat 20. In the following description, the end of the slat 20 on the side of the rotation center line a in the width w direction is referred to as a base end b of the slat 20 and the opposite end is referred to as a tip t of the slat 20. . Here, the front surface 20a of the slat 20 is a surface on the partition 10f side when the slat 20 closes the first opening 11, and the back surface 20b of the slat 20 is a surface opposite to the partition 10f side. is there.

A first shaft portion 21 f and a first shaft portion 21 l which are shaft portions protruding in the length l direction are formed at both ends of the blade 20 in the length l direction. The first shaft portion 21f is formed on the frame 10 side in the length l direction, and the first shaft portion 21l is formed on the link mechanism 501 side to be described later in the length l direction. The first shaft portion 21f and the first shaft portion 21l are rotatably supported by the frame 10, whereby the position of the rotation center line a of the slat 20 is determined. A second shaft portion 22 protruding in the length l direction is formed at one end of the wing plate 20 in the length l direction. The second shaft portion 22 receives the driving force of the motor 40 and reciprocates on an arc centered on the rotation center line a to determine the rotation angle of the slat 20. In addition, when each slat 20 closes the first opening 11, a slat support 15l described later is allowed to escape into the space, and the slat 20 and the slat support 15l are prevented from contacting each other. A space S1 from the second shaft portion 22 to the tip t and a space S2 from the reinforcing portion 22r to the first shaft portion 21l are provided. The first shaft portion 21f, the first shaft portion 21l, and the second shaft portion 22 prevent interference between the blade plates 20 or the blade support portions 15l in the width w direction of the blade plate 20, and as much as possible. The opening 11 is covered with a space S1 from the tip t and is disposed on both sides of the space S2. As a result, as compared with the case where the first shaft portion 21l is directly driven, the wing plate 20 can be rotated with a small driving force by separating the rotation center of the first shaft portion 21l from the second shaft portion 22 which is a power point. In addition, the operation accuracy of the slat 20 is improved.

Both end faces in the width w direction of the slats 20 are constituted by curved surfaces with rounded corners on the front surface 20a side and the back surface 20b side. As a result, when the slats 20 are opened and closed, the adjacent slats 20 are prevented from coming into contact with the corners, and the gaps between the slats 20 when the first opening 11 is closed can be reduced. It is said that.

The second shaft portion 22 is provided with a reinforcing portion 22r integrally formed with the wing plate 20 and the second shaft portion 22. Further, the base end portion 22 b of the second shaft portion 22 is provided with a reinforcing portion 22 r having a radial cross-sectional area that is larger than the tip portion 22 t of the second shaft portion 22. Here, the radial direction is a direction parallel to the YZ plane in the coordinate axis display of FIG. The reinforcing portion 22r can receive the stress applied to the base end portion 22b of the second shaft portion 22 in a distributed manner when the slat 20 swings. Therefore, the reinforcing part 22r can supplement the strength of the base end part 22b of the second shaft part 22. Further, the reinforcing portion 22r supports the side surface of the second shaft portion 22 on the first shaft portion 21l side, thereby supplementing the strength of the second shaft portion 22. Further, the space S1 from the second shaft portion 22 to the tip t and the space S2 from the reinforcing portion 22r to the first shaft portion 21l are the blades described later when each blade 20 closes the first opening 11. The plate support 15l is allowed to escape into the space, and the blade 20 and the blade support 15l are prevented from coming into contact with each other. Further, the second shaft portion 22 is arranged at a distance from the tip t of the slat 20 by a space S1. When each blade 20 closes the first opening 11 due to the space S1, the blade 20 and the blade support 15l are in a direction parallel to the Y-axis direction in the coordinate axis display of FIG. Overlaid.

The second shaft portion 22 is provided on an end face 22f on one end side in the length l direction of the slat 20. The diameter d 1 of the second shaft portion 22 is provided smaller than the thickness t 1 of the blade 20 in the direction of the thickness t 1 of the blade 20. Thereby, a stepped portion 22a that is a space due to a difference between the diameter d1 of the second shaft portion 22 and the thickness t1 of the slat 20 is formed at the base end portion 22b of the second shaft portion 22. Here, the base end portion 22b is provided with an R-forming surface 22g that is built up in a concave R shape. Moreover, although the 2nd axial part 22 is provided in the substantially cylindrical shape, you may provide in the substantially square pillar shape in which the corner | angular part was rounded, for example.

When the slat 20 swings, stress is generated in the end portion 22c of the second shaft portion 22 on the reinforcing portion 22r side and the step portion 22a. Since the slat 20 is provided with the step portion 22a, the stress generated when swinging is dispersed in the step portion 22a. Thereby, the intensity | strength of the slat 20 is raised. In addition, since the step portion 22a is provided, the gap between the blade 20 and the frame 10 is wide as compared with the configuration in which the step portion 22a is not provided. For example, when it is assumed that the slat 20 is fixed to the frame 10 due to freezing of dew condensation water, the slat 20 is widened by the gap between the surface 20a and the side surface on the surface 20a side of the reinforcing portion 22r. Freezing is suppressed. Therefore, the breakage of the slat 20 is suppressed by providing the step portion 22a.

Further, as shown in FIG. 2B, in order to open and close the first opening 11 by the wing plate 20, the direction in which the first opening 11 is closed by the wing plate 20 in the direction of swinging the wing plate 20. When the b1 direction and the direction in which the first opening 11 is opened by the wing plate 20 are the b2 direction, the second shaft portion 22 is located on the end surface 22f on one end side of the wing plate 20 more than the end portion 22d on the b1 direction side. It is provided on the b2 direction side. At this time, the second shaft portion 22 is provided with a stepped portion 22a at an end portion 22d on the side close to the frame 10. When the slat 20 is closed to the frame 10, the step 22 a is provided on the side approaching the frame 10, and particularly when the slat 20 fixed to the frame 10 due to freezing of condensed water is peeled off from the frame 10. The breakage of the second shaft portion 22 is prevented.

Further, the second shaft portion 22 is provided on the b1 direction side of the end surface 22f on the one end side of the slat 20 with respect to the end portion 22e on the b2 direction side. At this time, the second shaft portion 22 is provided with a stepped portion 22 a at an end portion 22 e on the side away from the frame 10. Therefore, the wing plate 20 is provided with step portions 22a on both sides of the second shaft portion 22 on the end face 22f. Thus, in both cases of opening and closing the frame 10 by the wing plate 20, the second shaft portion 22 is prevented from being broken when the wing plate 20 fixed to the frame 10 is peeled off from the frame 10 by freezing of condensed water. Yes.

In the present embodiment, three slats 20 are used, but the upper limit is not particularly limited on the condition that the number of slats of the damper device of the present invention is two or more. For example, by reducing the width w of the slats 20 and disposing more slats 20 on the same area of the flow path, the rotational space of each slat 20 can be further reduced. Of course, as the number of parts increases, the failure rate and assembly man-hours also increase. On the other hand, if the number of the slats 20 is reduced, such a problem can be reduced, but the rotation space of the slats 20 is increased by the amount of the decrease in the number of slats 20. The number of slats of the damper device according to the present invention may be determined in accordance with the environmental conditions in which the damper device is used, taking into account the balance between the advantages and disadvantages associated with the increase / decrease. In the present embodiment, it is preferable that the number of slats 20 is an odd number because of the structure of a link mechanism 50l described later.

<Frame configuration>
(overall structure)
FIG. 3 is a plan view, a side sectional view, and a bottom view showing the shape of the frame. 3A is a plan view of the frame 10, FIG. 3B is a cross-sectional view taken along the line AA in FIG. 3A, and FIG. 3C is a bottom view of the frame 10.

The frame 10 is a substantially rectangular hollow frame that rotatably supports the three slats 20. The frame 10 has a second opening 12 and a first opening 11 through which cool air passes. Hereinafter, the hollow portion of the frame 10 that communicates the second opening portion 12 and the first opening portion 11 is referred to as a flow path portion 10 a of the frame 10. As described above, the frame 10 is formed with the partition wall 10f which is a frame plate standing up from the bottom plate 10j. A first opening 11 is formed in the center of the partition wall 10f. Further, at the left end of the frame 10 as viewed in FIG. 3A, a case-shaped portion 10g of the frame 10 in which a gear member 50g described later is accommodated and a link that is a space in which a link mechanism 50l described later is accommodated. The mechanism arrangement portion 101 is integrally formed.

In the frame 10 of the present embodiment, the height h of the flow channel portion 10a is the width of each slat 20 when the dimension of the flow channel direction in the flow channel portion 10a is the height h of the flow channel portion 10a. The height is approximately the same as w. Thereby, thickness reduction of the whole damper apparatus D is achieved. The height h of the flow path portion 10a does not always have to be the same as the width w of the slat 20 and may be further lowered according to the environmental conditions in which the damper device D is used. It may be higher than the width w. For example, by making the height h of the flow path portion 10a higher than the width w of each vane plate 20, it is possible to prevent inadvertent application of force to the vane plate 20 when the damper device D is assembled or transported. .

The first opening 11 is formed at the center of the partition wall 10f and is reinforced by two ribs 10h. Further, a drain port 10k, which will be described later, is formed at the end of the bottom plate 10j on the partition wall 10f side. Here, the bottom plate 10j is a frame plate serving as a bottom when the damper device D is installed.

(Composition of drain outlet)
The damper device D is arranged in equipment or equipment as viewed in FIG. 3A, with the direction parallel to the Y-axis direction in the coordinate axis display of FIG. As shown in the lower side of FIG. 3B and the lower side of FIG. 3C, a drain port 10k is formed at the end of the bottom plate 10j of the frame 10 on the partition wall 10f side. The drainage port 10k is a through hole, and is used to drain the condensed water generated on the slats 20 to the outside of the damper device D. The end of the bottom plate 10j on the side of the partition wall 10f is a place where condensed water tends to stay, and a drain port 10k is formed here. Accordingly, the damper device D can suppress the condensation water from staying on the bottom plate 10j even when the frame 10 is installed to be inclined toward the partition wall 10f. Thereby, it can drain effectively from the corner | angular part 10s in the baseplate 10j with respect to what forms the drain outlet 10k in the baseplate 10j. Here, the drain port 10k can be provided in the vicinity of the end of the bottom plate 10j on the partition wall 10f side. Note that the vicinity means a place that is a predetermined distance away from the end on the partition wall 10f side in a direction parallel to the Z-axis direction in the coordinate axis display of FIG.

In the frame 10 in which each slat 20 shown in FIG. 2 is arranged, the total length of the drain outlet 10k in the same direction as the length l direction of each slat 20 is a length c. The length c of the drain port 10k and the length l of each slat 20 are the same length. Further, the length c may be longer than the length l. Condensed water generated over the length l of each slat 20 by providing the frame 10 with a drain port 10k having a length equal to or longer than the length l of each slat 20 Can be led to the drain port 10k, and drainage can be performed more efficiently.

Further, the total length of the first opening 11 in the same direction as the length l direction of each slat 20 is a length c1. The length c1 of the first opening 11 and the length l of each slat 20 are the same length. Further, the length c may be longer than the length l. Since each frame 10 is provided with the first opening 11 having the same length as or longer than the length l of each slat 20, each slat 20 passes through the first opening 11. The range directly exposed to cold air is efficiently covered. In addition, the form in which the 1st opening part 11 is formed in the area | region in which the front-end | tip part t of each slat 20 is provided is an optimal form.

The drain port 10k is provided with reinforcing ribs 10q that cross in a direction perpendicular to the length c direction of the drain port 10k at predetermined intervals along the length c direction of the drain port 10k. By providing the reinforcing rib 10q, the strength of the frame 10 can be ensured even when the drain port 10k having a large opening area is provided. Note that the direction in which the reinforcing rib 10q is provided is not limited to the direction orthogonal to the length c direction of the drain port 10k, and can be any direction as long as water can flow out from the drain port 10k. Good.

Moreover, the hole diameter of each drainage port 10k divided | segmented when the reinforcement rib 10q crossed is formed in the magnitude | size which a water droplet can flow down from the drainage port 10k. Further, when the thickness of the frame 10 is about 2.5 mm, the drain port 10k is located between the corner 10s of the bottom plate 10j and the partition wall 10f in the direction parallel to the Z-axis direction in the coordinate axis display of FIG. Is formed to have an opening width of about 2 mm. Thereby, it can suppress that dew condensation water retains in the drain port 10k with the surface tension. Therefore, drainage can be performed effectively from the drainage port 10k.

8 shows a state in which each slat 20 is arranged so as to restrict the flow of cool air through the second opening 12 and the first opening 11 with respect to the frame 10 shown in FIG. It is side sectional drawing when it arrange | positions among them in a fully open state and a fully closed state. In FIG. 8, each slat 20 indicated by a dotted line indicates a fully open state, and each slat 20 indicated by a one-dot chain line indicates a fully closed state. When each slat 20 is disposed at an angle that restricts the flow of cold air through the second opening 12 and the first opening 11 after the damper device D is installed, the tip t of each slat 20 is drained. It is arranged vertically above the mouth 10k. Thereby, the dew condensation water which generate | occur | produces in each slat 20 hangs down from the front-end | tip part t of each slat 20 and is removed from the drain port 10k. Therefore, drainage can be performed effectively. Here, the vertically upward position refers to a position that is parallel to the Y-axis direction in the coordinate axis display of FIG. 8 and that extends from below to above in FIG.

(Configuration of slat support)
A plurality of slat support portions 15 f and slat support portions 15 l that support the slats 20 are formed in the frame 10. The slat support 15f is formed on the right side of the frame 10 as viewed in FIG. 3A, and the slat support 15l is formed on the left side of the frame 10 as viewed in FIG. The slat support 15f is a bearing that rotatably supports the first shaft part 21f of the slat 20 on the frame 10 side. The slat support 15l is a bearing that rotatably supports the first shaft 21l on the link mechanism 501 side. The wing plate support portion 15 f and the wing plate support portion 151 are provided in pairs at positions corresponding to both ends of the wing plate 20 in the length l direction. Of the pair of slat support parts 15f and slat support parts 15l of each slat 20, the slat support part 15l on the left side in FIG. 3A is formed in the partition wall 10f, and a part of the circumferential direction thereof. In addition, an insertion port 15a is formed which is a cutout portion into which the first shaft portion 21l is inserted in the radial direction with respect to the wing plate support portion 15l. The blade support part 15 f on the right side of FIG. 3A is formed on the inner wall surface of the frame 10, and the shaft hole of the blade support part 15 f is a recess that does not penetrate the side wall of the frame 10. Thereby, the grease applied to the slat support 15f is retained in the shaft hole, and the grease is prevented from easily flowing out to the outside. The blade support part 15l on the left side of FIG. 3 (a) is such that the first shaft part 21l of the blade 20 is elastic with respect to the insertion hole 15a formed in the blade support part 15l. It is inserted by deforming.

Further, the pair of the slat support 15f and the slat support 15l disposed on the lowermost side in FIG. 3A is the tip of the slat 20 when the supporting slat 20 is in a closed state. The part t is adjusted to a position that overlaps the partition wall 10f (see FIG. 1A). Further, the pair of the slat support 15f and the slat support 15l disposed on the uppermost side in FIG. 3A is at least one of the slats 20 when the supporting slat 20 is fully open. The portion is adjusted to a position that does not affect the opening area of the first opening 11 when viewed from the first opening 11 side (see FIG. 1B). In the damper device D of the present embodiment, the slat support 15f and the slat support 15l are arranged in this manner, so that the flow of the flow path 10a is not inhibited.

Further, as shown in FIG. 8, the opening angle of the insertion port 15 a in the circumferential direction of each slat plate support portion 15 l in which the insertion port 15 a is formed is within the opening radial direction of the first opening 11. The blades 20 are set at an angle that is perpendicular to the short side direction 11a, which is a direction orthogonal to the length l direction of each blade 20. The “opening diameter direction” of the first opening 11 is a plane direction that defines the opening area of the first opening 11 and is a direction parallel to the XY plane in the coordinate axis display of FIG. Further, the short side direction 11a and “right angle” refer to a direction parallel to the Z-axis direction in the coordinate axis display of FIG.

By forming the insertion port 15a of the blade support part 15l at a right angle to the short side direction 11a of the first opening 11, the insertion port 15a is in a direction in which the rotation operation of the blade 20 is fully opened. It will be opened. In the damper device D of the present embodiment, the notch direction of the insertion port 15a is oriented in the direction in which the rotation operation of the slat 20 is fully opened, whereby the slat 20 is inserted into the slat support portion 15l. 15a can be fitted from the vertical direction. Thereby, the slat 20 can be easily assembled to the frame 10. Here, the vertical direction means a direction parallel to the Z-axis direction in the coordinate axis display of FIG. Further, each wing plate support 15l is formed in a symmetrical shape with respect to a direction parallel to the Y-axis direction in the coordinate axis display of FIG. Thereby, each blade support part 15l can disperse | distribute the deformation | transformation by the load added from the blade 20 right and left, when attaching the blade 20. Therefore, damage to the slat support 15l is suppressed. When the insertion port 15a of the slat support 15l shown in FIG. 8 is moved vertically upward so that at least a part of the slat support 15l is integrated with the frame 10, the frame 10 Can be made compact.

FIG. 13 is a side sectional view showing the shape of the frame viewed from the FF direction in FIG. As shown in FIG. 3A and FIG. 13, the inner surface of the frame 10 that defines the flow path portion 10 a is provided with a recessed portion 10 b in which the position of the inner surface is partially recessed outside the frame 10. It has been. Moreover, the hollow part 10b is provided with the inner dimension a1 of the flow path part 10a partially depressed to the inner dimension a2. The hollow portion 10b is provided in order to secure a swinging space for the second link member 57 described later. Further, the second link member 57 is provided to rotate each slat 20. Accordingly, a clearance m is secured between the wing plate support portion 15l disposed on the uppermost side in FIG. 13 and the inner peripheral surface 10i of the flow path portion 10a in the recessed portion 10b.

If there is no recess 10b, the wing plate support 15l having a clearance m with the inner peripheral surface 10i of the flow passage 10a is in contact with the inner peripheral surface 10i of the flow passage 10a or the inner periphery. A portion of the slat support 15l is integrated with the surface 10i. When the slat support 15l is in contact with the inner peripheral surface 10i, the slat support 15l is inhibited from being deformed toward the inner peripheral surface 10i, so that the amount of deformation of the other part becomes large. As a result, the slat support 15l is easily damaged. On the other hand, the slat support 15l disposed on the uppermost side in FIG. 13 has a clearance m between the inner peripheral surface 10i of the flow path part 10a, so that when the slat 20 is attached, Damage to the support portion 15l is suppressed.

<Power transmission mechanism>
(overall structure)
FIG. 4 is an exploded perspective view of the damper device D of the present embodiment. The damper device D opens or closes the first opening 11 by rotating the slats 20 with the driving force of the motor 40 to connect or block the cool air flow path. The driving force of the motor 40 is transmitted to the wing plate 20 by the power transmission mechanism 50 including the gear member 50g and the link mechanism 50l.

(motor)
A stepping motor is used as the motor 40 of this embodiment. The stepping motor can rotate in both forward and reverse directions, and the rotation angle can be calculated from the number of steps. Therefore, it is not necessary to separately perform feedback control using a rotary encoder or the like in order to detect the arrangement angle of the slats 20 at that time. Thereby, reduction of the number of parts in the whole damper apparatus D and size reduction of an apparatus are achieved.

(Gear member)
FIG. 5 is a transparent plan view showing the speed reduction structure of the gear member 50g as viewed from the direction B of FIG. Hereinafter, the gear member 50g will be described with reference to FIGS.

The driving force of the motor 40 is decelerated through the gear member 50g from the motor pinion 41 fixed to the output shaft and transmitted to the link mechanism 50l. The gear member 50g is composed of five gear members, that is, a first gear 51 to a fourth gear 54 and a fifth gear 55 that is a link driving member that swings the link mechanism 50l.

The motor 40 is accommodated in a first motor cover 43 which is a case half of a motor cover 44 which is a case body constituting a gear box 10n described later, and a case-like portion 10g formed in the frame 10 and a first The second motor cover 30 which is a half case disposed between the motor cover 43 and the motor cover 43 is connected. In addition, the motor 40 includes a connector portion 60 described later. The first gear 51 is disposed in a space defined by the first motor cover 43 and the second motor cover 30 and is rotatably supported by a support shaft 42 provided in the space. The second gear 52 to the fourth gear 54 are disposed in a space defined by the case-like portion 10g of the frame 10 and the second motor cover 30, and are rotatably supported by the support shaft 32 provided in the same space. Has been. The fifth gear 55 is rotatably supported by a concave portion 33 formed in the second motor cover 30 and a link driving member support portion 16 which is a bearing portion penetrating from the case-like portion 10g to the flow path portion 10a. .

The first gear 51 to the fourth gear 54 are a reduction gear train that reduces the rotation of the motor pinion 41 and transmits it to the fifth gear 55. The fifth gear 55 is a member in which a gear portion 55g formed with a fan-shaped gear meshing with the fourth gear 54 and a shaft portion 55s that is an output shaft portion that transmits the driving force to the link mechanism 50l are integrated. It is. A portion of the outer peripheral surface of the shaft portion 55s of the fifth gear 55 is cut out in a flat shape. A pair of such notches are provided at positions that are symmetrical in the circumferential direction of the shaft portion 55s.

The outer peripheral shape of the shaft portion 55s is provided in a non-perfect circle, and the shaft portion 55s is fitted to the inner surface of a fitting hole 56b of the first link member 56 described later. The fitting hole 56b is formed in a shape that can be engaged with the shaft portion 55s in the circumferential direction. Here, the non-perfect circle is a shape other than a perfect circle. Further, since the corner portion 55k that engages with the inner surface of the fitting hole 56b is provided in the circumferential direction of the shaft portion 55s, the corner portion 55k is prevented from rotating in the circumferential direction of the shaft portion 55s. Yes. At this time, the shaft portion 55s and the first link member 56 are fitted by frictional engagement by press-fitting round surfaces 55h and 55j of the shaft portion 55s described later into the inner surface of the fitting hole 56b. Here, the

rounded surfaces

55 h and 55 j of the shaft portion 55 s are prevented from coming off in the axial direction with the first link member 56. Thereby, the shaft part 55s provided in the non-perfect circle and the inner surface of the fitting hole 56b formed in a shape engageable with the shaft part 55s in the circumferential direction are connected by being press-fitted. Thus, it is possible to prevent the fitting hole 56b from being easily moved or detached from the shaft portion 55s. Here, the press-fitting means that a frictional force is generated between the shaft portion 55s and the inner surface of the fitting hole 56b by the elastic force when the fifth gear 55 and the first link member 56 are deformed, and the shaft portion 55s is fitted. It is locked to the inner surface of the joint hole 56b.

Here, the inner surface of the fitting hole 56b is provided with a through hole. However, as long as it is formed in a shape that can be engaged with the shaft portion 55s in the circumferential direction, a recess is provided in addition to the through hole. May be. The outer peripheral surface of the shaft portion 55s and the inner surface of the fitting hole 56b do not need to have the same shape, and any shape can be used as long as the corner portion 55k can prevent and fit the inner surface of the fitting hole 56b. Shape may be sufficient.

More specifically, two planar portions 55n are provided on the outer peripheral surface of the shaft portion 55s of the fifth gear 55 at positions symmetrical with respect to the circumferential direction of the shaft portion 55s. Thereby, as for shaft part 55s, two plane parts 55n serve as a rotation stop to the peripheral direction of shaft part 55s. Further, the shaft portion 55s is provided with corner portions 55k at both end portions of the two plane portions 55n. Further, the surfaces other than the plane portion 55n are provided with

rounded surfaces

55h and 55j which are curved surfaces curved along the circumferential direction at symmetrical positions in the circumferential direction of the shaft portion 55s, and the

rounded surfaces

55h and 55j are fitted. The inner hole 56b is press-fitted with a curved surface. Further, the round surfaces 55h and 55j are a part of a perfect circle cut out of a circular arc, and are a part of the circumference that makes the respective rotation axes the same. As a result, the shaft portion 55s is connected to the inner surface of the fitting hole 56b in the radial direction by press-fitting, so that the positions of the shafts of the fifth gear 55 and the first link member 56 are fixed, and coaxiality is easy. Is secured.

Further, the inner surface of the fitting hole 56b is formed in a shape corresponding to the outer shape of the shaft portion 55s. Thereby, the shaft portion 55s is press-fitted along the shape of the inner surface of the fitting hole 56b. Therefore, the fifth gear 55 and the first link member 56 are easily coaxial.

FIG. 11 is a modified example in which one flat surface portion is provided on the outer peripheral surface of the shaft portion 55 s of the fifth gear 55. Hereinafter, a modification of the shaft portion 55s will be described with reference to FIG. Here, it is assumed that the inner surface of the fitting hole 56b that is fitted to the shaft portion 55s is formed in a shape that can be engaged with the shaft portion 55s in the circumferential direction.

The fifth gear 55a in FIG. 11 is provided with one flat surface portion 55p on the outer peripheral surface of the shaft portion 55s. Since corner portions 55t are provided at both ends of the flat portion 55p in the circumferential direction of the shaft portion 55s, the corner portions 55t come into contact with the inner surface of the fitting hole 56b of the first link member 56 at two locations. . Further, the surfaces other than the flat surface portion 55p in the circumferential direction of the shaft portion 55s are provided with the rounded surfaces 55r, so that the rounded surfaces 55r are in contact with the inner surfaces of the fitting holes 56b. Since the curved surface 55r that is in contact with the curved surface is press-fitted and fitted to the inner surface of the fitting hole 56b at the curved surface portion, it is easy to ensure coaxiality between the shaft portion 55s and the fitting hole 56b. As a result, the shaft portion 55s and the inner surface of the fitting hole 56b are connected by being press-fitted, thereby suppressing the occurrence of slip between the fifth gear 55a and the first link member 56. ing. Further, by providing the rounded surface 55r, the contact area can be increased with respect to the inner surface of the fitting hole 56b rather than the flat surface portion 55p. Thereby, the coaxial of the 5th gearwheel 55a and the 1st link member 56 is ensured easily by making the round surface 55r into the circular arc surface coaxial with the fitting hole 56b.

The first gear 51 to the fourth gear 54 constituting the gear member 50g are compound gears in which a large-diameter spur gear and a small-diameter spur gear are connected in the axial direction and integrated. The motor pinion 41 of the motor 40 meshes with the large diameter gear 51w of the first gear 51, and the rotation of the large diameter gear 51w is decelerated and transmitted to the small diameter gear 51n. The second motor cover 30 is formed with a cover portion 31 that is a covered cylindrical projection protruding toward the frame 10, and a small-diameter gear 51n of the first gear 51 is accommodated in the cylinder. The cover portion 31 is partially cut away in the circumferential direction, and a portion of the small-diameter gear 51n is exposed therefrom. The exposed portion of the small diameter gear 51n meshes with the large diameter gear 52w of the second gear 52. Thereafter, the small diameter of the fourth gear 54 is sequentially changed from the small diameter gear 52n of the second gear 52 to the large diameter gear 53w of the third gear 53, from the small diameter gear 53n of the third gear 53 to the large diameter gear 54w of the fourth gear 54. The driving force of the motor 40 is decelerated and transmitted from the gear 54n to the gear portion 55g of the fifth gear 55.

FIG. 6 is a side view of the fifth gear 55 inserted into the link driving member support 16 as seen from the direction C of FIG. For convenience of explanation, members other than the frame 10 and the fifth gear 55 are not shown. The gear portion 55g of the fifth gear 55 and the case-like portion 10g of the frame 10 are in contact with each other when the blade 20 is at a predetermined rotation angle, that is, when the fifth gear 55 is at a predetermined angular position. It has

stoppers

55c, 55v, 10c, and 10v that block the transmission of the driving force to the link mechanism 50l by abutting. In the gear portion 55g, the stopper portion 55c of the gear portion 55g abuts against the stopper portion 10c of the case-like portion 10g at a position where the slat 20 rotates and the first opening portion 11 is fully closed. Further, in the gear portion 55g, the stopper portion 55v of the gear portion 55g contacts the stopper portion 10v of the case-like portion 10g at a position where the vane 20 rotates to fully open the first opening portion 11. Thereby, the range of the swing angle of the fifth gear 55 is between the position where the stopper portion 55v contacts the stopper portion 10v and the position where the stopper portion 55c contacts the stopper portion 10c. It is a range that opens and closes. The power transmission mechanism 50 of the present embodiment is configured such that when the slat 20 reaches its rotation limit angle, the transmission of the driving force is interrupted by the power transmission member before the link mechanism 50l. Excessive stress is prevented from being applied to the wing plate 20 and the link mechanism 50l, and the reduction in the component life of the wing plate 20 and the link mechanism 50l is suppressed. In the present embodiment, the

stopper portions

55 c and 55 v are provided on the fifth gear 55, but the gear member-side stopper portion of the present invention may be provided on a gear member other than the fifth gear 55. In the present embodiment, the case-like portion 10g is integrally formed with the frame 10 as a part of the frame 10, but the case-like portion 10g may be separate from the frame 10.

(Link drive member support)
FIG. 9 is a cross-sectional plan view showing the structure of the link drive member support. Hereinafter, the link drive member support 16 and the shaft 55s of the fifth gear 55 will be described with reference to FIG.

The fifth gear 55 is a component constituting the gear member 50g which is a power transmission member in the power transmission mechanism 50 including the gear member 50g and the link mechanism 50l. The shaft portion 55s of the fifth gear 55 is inserted into the flow channel portion 10a from the through hole 16a formed in the frame 10. The shaft portion 55s is formed with a front end portion 55d, a large diameter portion 55f, and an enlarged diameter portion 55e, and the front end portion 55d is inserted into the flow path portion 10a. The large diameter portion 55f has a diameter larger than that of the tip portion 55d. The enlarged diameter portion 55e is formed between the distal end portion 55d and the large diameter portion 55f. The distal end portion 55d is fitted in a fitting hole 56b of a first link member 56 described later in the flow path portion 10a.

A link driving member support portion 16 as a retaining portion is formed at the edge portion 16c of the through hole 16a. The link driving member support portion 16 supports the tip portion 55d of the shaft portion 55s. Further, the shape of the surface of the link drive member support portion 16 facing the shaft portion 55s supports the outer peripheral surface of the tip portion 55d of the shaft portion 55s, and the axis line of at least a part of the enlarged diameter portion 55e and the shaft portion 55s. It can abut in the direction and is formed in a shape that covers a part of the large-diameter portion 55f on the tip portion 55d side. Further, the diameter-enlarged portion 55 e is in contact with the inner peripheral surface of the link driving member support portion 16, thereby restricting the movement of the fifth gear 55 in the axial direction. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

The shape of the surface of the link drive member support portion 16 facing the shaft portion 55s supports the outer peripheral surface of the tip portion 55d of the shaft portion 55s, and extends in the axial direction of at least a part of the enlarged diameter portion 55e and the shaft portion 55s. By being formed in a shape that covers a part of the large-diameter portion 55f on the distal end portion 55d side, the intrusion path of water that enters the case-like portion 10g from the distal end portion 55d is formed by the enlarged diameter portion. It is longer by the length of 55e. Thereby, it can suppress that water penetrate | invades in case-like part 10g. Further, in the shaft portion 55s, the intrusion path of water entering the case-like portion 10g from the tip portion 55d is bent by the enlarged diameter portion 55e. This prevents water from entering the case-like portion 10g.

Between the shaft portion 55s and the link driving member support portion 16, grease g which is a lubricant is filled. This prevents water from entering through these gaps. Further, since the link driving member support portion 16 is formed along the large diameter portion 55f, the enlarged diameter portion 55e, and the tip end portion 55d, a portion bent in a step shape is formed on the inner surface of the link driving member support portion 16. A stepped portion 16b is provided. By this stepped portion 16b, the outflow of the grease g due to the rotation of the shaft portion 55s is suppressed, and the waterproof effect by the grease g can be kept long.

Further, the gap d provided between the large diameter portion 55f of the shaft portion 55s and the link drive member support portion 16 is larger than the clearance e provided between the tip portion 55d and the link drive member support portion 16. Is also large. As a result, the gap d can be filled with more grease g than the clearance e, and the waterproof effect of the grease g can be maintained for a long time. On the other hand, by reducing the clearance e between the distal end portion 55d of the shaft portion 55s and the link drive member support portion 16 as much as possible, the positioning accuracy of the distal end portion 55d with respect to the link drive member support portion 16 is enhanced. The entrance of water into the case-like portion 10g is narrowed, and the waterproofness is further enhanced.

Further, the corner portion 55a between the large diameter portion 55f and the enlarged diameter portion 55e is rounded into a curved surface. The link drive member support portion 16 is formed along the large diameter portion 55f, the enlarged diameter portion 55e, and the tip end portion 55d, whereby the inner surface of the link drive member support portion 16 is bent into a step shape. A stepped portion 16b is provided. Then, by rounding the corner portion 55a between the large-diameter portion 55f and the enlarged-diameter portion 55e into a curved surface, a clearance f that the corner portion 55a cannot reach is secured between the corner portion 55a and the stepped portion 16b. Has been. Since the grease g stored in the gap f does not easily scatter and leak, the waterproof effect by the grease g is kept longer.

(Gearbox)
FIG. 10 is a side sectional view showing the structure of the gear box as viewed from the direction E of FIG. Hereinafter, the gear box 10n will be described with reference to FIG. 4, FIG. 5, and FIG. For convenience of explanation, FIG. 10 does not show members other than the frame 10, the motor 40, the motor pinion 41, the first gear 51, and the second gear 52.

The frame 10 is formed with a gear box 10n which is a case body in which the gear member 50g is accommodated. The gear box 10n includes a case-like portion 10g of the frame 10 and a motor cover 44 fitted to the case-like portion 10g of the frame 10. The motor cover 44 includes a first motor cover 43, which is two case members, and a first cover. 2 motor cover 30 is used. The first motor cover 43 accommodates the motor 40. The second motor cover 30 is disposed between the case-like portion 10 g of the frame 10 and the first motor cover 43. The inside of the gear box 10n is divided into three layers in the axial direction of the first gear 51 constituting the plurality of gear members 50g. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

As described above, the first gear 51 is accommodated between the second motor cover 30 and the first motor cover 43, and the large-diameter gear 51 w of the first gear 51 is the motor pinion 41 of the motor 40. And in the second motor cover 30. In the second motor cover 30 in which the motor pinion 41 is accommodated, a covered cylindrical cover part 31 protruding toward the case-like part 10g is provided on the partition wall 30c separating the case-like part 10g. Further, the support shaft 42 of the first gear 51 is fixed to the lid portion 31 a of the cover portion 31 at the end on the case-like portion 10 g side. The end of the support shaft 42 on the first motor cover 43 side is fixed between the motor 40 and the second motor cover 30. In the first gear 51, the small-diameter gear 51 n and a part of the support shaft 42 are accommodated in the cylinder of the cover portion 31. The cover portion 31 is partially cut away in the circumferential direction, from which the small-diameter gear 51n of the first gear 51 is exposed in the case-like portion 10g, and the second gear 52 in the case-like portion 10g. Is engaged with the large-diameter gear 52w. Here, the motor 40 is disposed at the center of the substantially square first motor cover 43. Therefore, when the motor pinion 41 is passed through the case-like portion 10g, the degree of freedom of arrangement of the gear member 50g is reduced in the case-like portion 10g, and the gear member 50g is arranged compactly in the case-like portion 10g. Difficult to do. Here, the first gear 51 penetrates into the case-like portion 10 g at a position shifted from the central portion of the first motor cover 43. The first gear 51 is accommodated in the second motor cover 30 in which the motor pinion 41 is accommodated by fixing the end portion of the support shaft 42 on the case-like portion 10 g side to the lid portion 31 a of the cover portion 31. The small gear 51n of the first gear 51 is exposed in the case-like portion 10g from the notched portion of the cover portion 31. Thereby, the 1st gearwheel 51 can be arrange | positioned in the position which does not receive a restriction | limiting in the position where the motor pinion 41 is arrange | positioned. Therefore, the space is effectively used by increasing the degree of freedom of arrangement of the gear member 50g of the case-like portion 10g.

The damper device D divides the inside of the gear box 10n into three layers in the axial direction of the plurality of gear members 50g, so that the reduction gear train composed of the first gear 51 to the fourth gear 54 in the plane direction is arranged. The spread is changed to the height direction, and the dimension of the gear box 10n in the plane direction is reduced. Thereby, the damper apparatus D is reduced in size. Here, the plane direction is a direction parallel to the YZ plane in the coordinate axis display of FIG. 4, and the height direction is a direction parallel to the X axis direction in the coordinate axis display of FIG. Further, the opposing surfaces may be provided in contact with each other.

The case-like portion 10g is provided with a fitting portion 10t, the second motor cover 30 is provided with a fitting portion 30a and a fitting portion 30b, and the first motor cover 43 is provided with a fitting portion 43a. The inner peripheral surface and the outer peripheral surface of the fitting portion 43a are fitted so as to face each other in the thickness direction of the second motor cover 30 and the first motor cover 43. Moreover, it fits so that the inner peripheral surface of the fitting part 30b and the outer peripheral surface of the fitting part 10t may oppose the 2nd motor cover 30 and the thickness direction of the case-like part 10g. The gear box 10n is configured such that three case members of the case-shaped portion 10g, the second motor cover 30, and the first motor cover 43 are fitted so as to face each other in the thickness direction. Can be small. As a result, the damper device D is prevented from entering water directly into the gear box 10n. Here, the thickness direction is a direction parallel to the Z-axis direction in the coordinate axis display of FIG. Further, the opposing surfaces may be provided in contact with each other.

For example, when the damper device of the present invention is arranged in the back of the refrigerator, the depth of the storage space of the refrigerator can be increased by reducing the dimension in the plane direction of the gear box.

(Link mechanism)
FIG. 7 is a view of the swinging operation of the link mechanism 50l as viewed from the direction C in FIG. FIG. 7A is a transmission side view when the blade 20 is in a fully open state, and FIG. 7B is a transmission side view when the blade 20 is in a closed state. Hereinafter, the link mechanism 50l will be described with reference to FIGS.

The link mechanism 50l includes a first link member 56 and a second link member 57. The first link member 56 receives the driving force of the fifth gear 55 and swings the second link member 57, whereby the second link member 57 moves the second shaft portion 22 of the three blades 20, The vanes 20 are reciprocated on an arc centered on the rotation center line a of the vanes 20 to rotate the vanes 20.

The first link member 56 is a member in which two substantially cylindrical bearings are connected to each other in the radial direction. The first link member 56 has a fitting hole 56b into which the shaft portion 55s of the fifth gear 55 is fitted, and a shaft hole 56a that rotatably supports the connecting shaft 57a of the second link member 57. Yes. The shape of the fitting hole 56 b of the first link member 56 corresponds to the shape of the shaft portion 55 s of the fifth gear 55. As a result, the portion of the shaft portion 55s cut out in the plane engages with the fitting hole 56b in the circumferential direction, and the fifth gear 55 and the first link member 56 rotate integrally.

The second link member 57 is a member mainly composed of an elongated plate-like body. Three connecting holes 57b that rotatably support the second shaft portion 22 of the three slats 20 are formed on the surface of the second link member 57 on the slat 20 side, and the surface on the opposite side. The connecting shaft 57 a supported by the shaft hole 56 a of the first link member 56 protrudes toward the first link member 56. The connecting hole 57b is formed as a shaft hole having a hole bottom. The second link member 57 can position the blade 20 in the axial direction by bringing the blade 20 into contact with the bottom of the connection hole 57b. Thereby, the catch by the 2nd link member 57 and the reinforcement part 22r of the slat 20 contact | abutting is suppressed. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

In the link mechanism 50l, the wing plate 20, and the frame 10 of this embodiment, the first link member 56 is a drive link, the second link member 57 is an intermediate link, the frame 10 is a fixed link, and each wing plate 20 is a driven link. The four-bar linkage mechanism is configured. Thereby, it is possible to synchronize the rotation operation of each slat 20 with a simple structure.

Here, the shaft portion 55 s of the fifth gear 55 is supported on the link driving member support portion 16 of the frame 10. In the frame 10 in this embodiment, the link driving member support 16 and the above-described slat support 15f and slat support 15l are integrally formed. In the damper device D of the present embodiment, the slat support 15f, the slat support 15l, and the link driving member support 16 are integrally formed with the frame 10, so that the slat 20 and the link mechanism 50l are formed. It is possible to keep the relative positional relationship constant. Thereby, the influence on the positional accuracy of these members due to dimensional errors and assembly errors is suppressed, and the smooth operation of the slats 20 is ensured.

In addition, as can be seen from the fact that the second opening 12 side of the link mechanism 50l in FIGS. 1 and 4 is covered with the cover portion 19 that is a protective cover in FIG. Is within the range of the flow path portion 10a. That is, the link mechanism 50l of the present embodiment does not protrude from the end of the frame 10 in the entire process of the swinging operation. Thereby, the freedom degree of the installation place of the damper apparatus D is raised.

Furthermore, the axial hole direction of the link driving member support portion 16 and the axial hole directions of the blade support portions 15f and the blade support portions 15l extend in a straight line or parallel direction. In the damper device D of the present embodiment, the drive force of the motor 40 is efficiently obtained because the link drive member support portion 16, the blade support portions 15f and the blade support portions 15l have the same axial hole direction. In addition, the load applied to each member such as torsion of the slats 20 can be suppressed.

Further, when the number of the slats 20 that the second link member 57 rotatably supports is an odd number, the connecting shaft 57a of the second link member 57 and the connecting hole formed at the center in the odd connecting holes 57b. 57b can be arranged coaxially. Accordingly, the shaft portion 55s of the fifth gear 55 and the first link member 56 can be arranged at the center position in the left-right direction of the second link member 57. Therefore, the second link member 57 can smoothly rotate the slat 20. Here, the left-right direction is a direction parallel to the Y-axis direction in the coordinate axis display of FIG.

(Clear clearance process between parts)
FIG. 12 is a cross-sectional view in plan view showing the structure when the damper device is assembled. 12A is a cross-sectional view in plan view showing the structure when the first link member 56, the second link member 57, and the blades 20 that are link driving members are assembled, and FIG. 12B is the fifth gear. FIG. 5 is a cross-sectional view in plan view showing a structure in which a clearance that is play between parts is removed by adjusting a press-fitting margin after press-fitting 55 into a second link member 57. Hereinafter, with reference to FIG. 12, the process of removing the clearance between components by adjusting the press-fitting margin after press-fitting the fifth gear 55 into the second link member 57 will be described.

As shown in FIG. 12A, the damper device D assembles the blades 20, the first link member 56, and the second link member 57 to the frame 10. These parts are assembled so as not to interfere with each other. Thereby, the smooth operation of each component is ensured, and a clearance at the time of assembly is inevitably provided between the components. Here, the clearance is a margin in dimensions such as an intersection that is considered in design, and a gap described later is intentionally provided.

Further, when the direction parallel to the length direction of each slat 20 is the axial direction of the damper device D, the first link member 56, the second link member 57, each slat 20, and each connecting portion of the frame 10 Is provided with play that is a gap in the axial direction. Here, the axial direction means a direction parallel to the X-axis direction in the coordinate axis display of FIG.

At this time, between each blade 20 and the frame 10, an end surface 21h on the first shaft portion 21f side on the frame 10 side on the right side in FIG. (A) A clearance h1 that is play is provided between the end face 15c of the blade support part 15f on the right side as viewed. Further, a clearance i is provided between the bottom surface of the connecting hole 57b which is a bearing portion in the second link member 57 and the tip 22t of the slat on the left side of each slat 20 as viewed in FIG. Also, the end surface 56c on the right side of the fitting hole 56a that is the bearing portion in the first link member 56 as viewed in FIG. 12A and the end surface 57c that is the base end portion of the connecting shaft 57a that is the shaft portion in the second link member 57 A clearance j is provided between the two.

Further, the position of the fifth gear 55 in the axial direction of the damper device D is fixed. The first link member 56 can change the position of the damper device D in the axial direction within a gap k described later while maintaining the press-fitted state with the fifth gear 55.

Next, the process for removing the clearance between the parts will be described. As shown in FIG. 12 (b), the damper device D is a shaft that is a convex portion of the fifth gear 55 after assembling each blade 20, the first link member 56, and the second link member 57 to the frame 10. The portion 55 s is locked by the friction force of the fifth gear 55 and the first link member 56 by press-fitting the portion 55 s into the fitting hole 56 b that is a through hole of the first link member 56. At this time, the end surface 56 c of the first link member 56 abuts on the end surface 57 c of the second link member 57 by adjusting the press-fitting margin. Further, the second link member 57 presses each wing plate 20 by being pressed by the first link member 56. At this time, the tip 22t of the slat 20 abuts the bottom surface of the connection hole 57b of the second link member. Thereby, it is possible to provide a gap between the second link member 57 and the reinforcing portion 22r of the slat 20 and the second link member 57 and the reinforcing portion 22r of the slat 20 during the opening / closing operation of the slat 20. Are prevented from interfering with each other. Further, each wing plate 20 presses the frame 10 by being pressed by the second link member 57. At this time, the end face 21h of each slat 20 abuts on the end face 15c of the flange part of the slat support 15f. Thereby, the sliding surface of each slat 20 and the frame 10 becomes only a portion where the flange portion and the slat 20 overlap, and the frictional force during the opening / closing operation of the slat 20 is suppressed. Further, during the opening / closing operation of the slat 20, the front end 22 t of the slat 20 and the bottom surface of the connection hole 57 b of the second link member come into contact with each other and slide. Further, the first link member 56 and the second link member 57 come into contact with each other and slide.

At this time, the clearance h1, clearance i, and clearance j between the parts of the first link member 56, the second link member 57, each slat 20 and the frame 10 are removed. Further, a gap k is provided between the end surface 55x on the left side in FIG. 12B of the shaft portion 55s of the fifth gear 55 and the end surface 56d on the left side in FIG. 12B of the first link member 56. The adjustment range, which is the margin for press-fitting the gap k, is provided longer than the cumulative amount of the clearance h1, the clearance i, and the clearance j. Accordingly, the damper device D is provided with a press-fit margin longer than the cumulative amount of the clearance h1, the clearance i, and the clearance j so that the clearance h1, the clearance i, and the clearance j can be crushed. And the clearance j is crushed and adjusted only at the margin of press-fitting, the backlash between the parts of the first link member 56, the second link member 57, each vane plate 20, and the frame 10 is suppressed, The malfunction is reduced.

(Protective cover)
FIG. 14 is a side sectional view showing the structure of the protective cover and the frame as seen from the GG direction in FIG. Hereinafter, the cover portion 19 and the frame 10 which are protective covers will be described with reference to FIGS. 4 and 14. For convenience of explanation, in FIG. 14, members other than the cover portion 19 and the frame 10 are not shown.

The frame 10 is provided with a cover 19 that covers a part of the second opening 12 and covers the link mechanism 50l disposed in the flow path 10a. The cover 19 prevents an object or a human hand from coming into contact with the link mechanism 50l. Thereby, when the damper device D is transported and attached, the damper device D is prevented from damaging the link mechanism 501 due to an object or a human hand coming into contact with the link mechanism 50l.

The cover part 19 is provided with a flat protective part 19a and fixed parts 19b at both ends of the protective part 19a. The protection part 19 a is provided so as to cover the second opening 12 of the frame 10. The fixing portion 19b is provided so as to extend along the outer surface 10m of the frame 10. The outer surface 10m and the fixing portion 19b of the frame 10 are provided with a locking portion 13 that is a fixing structure for locking the fixing portion 19b to the outer surface 10m of the frame 10.

The locking portion 13 is provided so as to engage the outer surface 10m of the frame 10 by elastically deforming the fixing portion 19b. Moreover, the latching | locking part 13 is comprised by the nail | claw part 13a and the through-hole 13d. The claw portion 13a is provided on the outer surface 10m of the frame 10, and the through hole 13d is provided on the fixing portion 19b. The claw portion 13a gradually sinks from the top portion 13e and the first tapered surface 13b, which is a first taper portion gradually raised toward the top portion 13e of the claw portion 13a, along the mounting direction of the cover portion 19 to the frame 10. The 2nd taper surface 13c which is a 2nd taper part is provided. Here, the attaching direction of the cover 19 to the frame 10 is a direction parallel to the Z-axis direction in the coordinate axis display of FIG.

By providing the cover part 19 with the claw part 13a and the locking part 13 including the through hole 13d, the cover part 19 can be attached after assembling other parts to the frame 10. Thereby, the link mechanism 50l is easily assembled in the flow path portion 10a of the frame 10. Therefore, the number of work steps for attaching the cover portion 19 to the frame 10 can be reduced.

Further, when the shape of the claw portion is a general claw shape in which the first tapered surface 13b is provided only on one side portion, the through hole 13d of the cover portion 19 and the first tapered portion are attached after the cover portion 19 is attached. A backlash caused by a gap occurs between the other side portion where the surface 13b is not provided. The claw portion 13a of the damper device D of the present embodiment is provided with a first tapered surface 13b and a second tapered surface 13c. In addition, the angle at which the first tapered surface 13 b rises with respect to the mounting direction of the cover portion 19 to the frame 10 is larger than the angle at which the second tapered surface 13 c sinks with respect to the mounting direction of the cover portion 19 to the frame 10. It is small. Thereby, after the fixing | fixed part 19b contacts the 1st taper surface 13b, the top part 13e, and the 2nd taper surface 13c in this order, the cover part 19 is attached to the 2nd taper surface 13c. At this time, the cover portion 19 is elastically deformed into a weak square shape that is open with respect to the tip of the fixed portion 19b in FIG. Thereby, the cover part 19 always contacts the 2nd taper surface 13c, and backlash does not generate | occur | produce between the nail | claw parts 13a. Therefore, the backlash of the cover part 19 after attachment is also suppressed, and the occurrence of abnormal noise from the cover part 19 when vibration or impact is applied to the cover part 19 is suppressed. Moreover, when attaching the cover part 19 to the nail | claw part 13a, the dispersion | variation by the individual difference of the cover part 19 is suppressed. Here, when the fixing portion 19b on one side is in contact with the second tapered surface 13c, the fixing portion 19b on the opposite side may contact the frame 10 beyond the second tapered surface 13c. A guide wall 14 a and a guide wall 14 b are provided on the outer surface 10 m of the frame 10. Thereby, the position shift of the cover part 19 with respect to the frame 10 is suppressed along the guide wall 14a and the guide wall 14b.

In addition, when the latching | locking part 13 is comprised by the recessed part (not shown) formed in 10 m of outer surfaces of the flame | frame 10, and the nail | claw part (not shown) formed in the fixing | fixed part 19b, When the claw portion is formed on the outer surface 10m and the concave portion is formed on the fixing portion 19b, a through hole (not shown) formed on the outer surface 10m of the frame 10 and the fixing portion 19b are formed. In the case of being constituted by a claw portion formed on the outer surface 10m of the frame 10 and a through hole formed in the fixing portion 19b, The effect can be demonstrated.

Further, as shown in FIG. 4, a guide 14 that is a guide portion of a fixed portion 19b including a guide wall 14a and a guide wall 14b is provided on the outer surface 10m of the frame 10 to which the cover portion 19 is attached. The guide wall 14 a and the guide wall 14 b prevent the displacement of the fixing portion 19 b when the cover portion 19 is attached to the frame 10, and lock the through hole 13 d of the fixing portion 19 b to the claw portion 13 a of the frame 10. It is what leads to. Here, the direction for preventing the positional deviation refers to a direction parallel to the XZ plane in the coordinate axis display of FIG.

Further, as previously shown in FIGS. 3A and 13, on the inner surface of the frame 10 that defines the flow path portion 10a, the rocking mechanism of the link mechanism 501 including the first link member 56 and the second link member 57 is shaken. In order to secure a moving space, a recessed portion 10 b in which the position of the inner surface is partially recessed outside the frame 10 is provided. Moreover, the hollow part 10b is provided with the inner dimension a1 of the flow path part 10a partially depressed to the inner dimension a2. The outer surface 10p of the frame 10 that protrudes outward by the recess 10b is a guide wall 14b that is a part of the guide 14.

By using the outer surface 10p of the frame 10 that protrudes outward by the recess 10b provided to secure the rocking space of the link mechanism 501 as the guide wall 14b of the fixed portion 19b, the recess 10b and the guide wall are used. The structural efficiency of the frame 10 is enhanced as compared with the case where the frame 14b is provided independently.

(Connector part)
FIG. 16 is a perspective view showing the structure of the connector portion. FIG. 17 is an exploded perspective view showing the structure of the connector portion. Hereinafter, the connector 60 will be described with reference to FIGS. 16 and 17. The front, back, left, right, top, and bottom directions of the connector section shown below indicate the front, back, left, right, top, and bottom directions in the coordinate axis display of FIGS.

In FIG. 16, the motor 40 is housed in a motor cover 44 which is a case body. Terminals (not shown) of the motor 40 are held by a connector portion 60 provided in the motor 40. The connector 60 has an opening 60 a to which another connector (not shown) paired with the connector 60 is connected, and a front surface 60 b that is a part of the outer surface of the connector 60, exposed from the motor cover 44 to the outside. Yes. The motor cover 44 is provided by fitting the first motor cover 43 and the second motor cover 30 which are case halves. Further, the motor cover 44 is provided with a connector protection portion 44a that covers the outer surface of the connector portion 60 except for the opening 60a and the front surface 60b. Here, the connector protection part 44a is a part closer to the connector part 60 than the dotted line display part of FIG. Further, the front surface 60 b of the connector portion 60, the outer surface 43 d of the first motor cover 43, and the outer surface 30 e of the second motor cover 30 form substantially the same plane 70.

The connector part 60 is covered with the connector protection part 44a of the motor cover 44 except for the opening part 60a and the front face 60b, so that the connector part 60 is caught by peripheral objects when the damper device D is transported or assembled. It is prevented from being damaged or deformed. Further, the front surface 60b of the connector portion 60, the outer surface 43d of the first motor cover 43 and the outer surface 30e of the second motor cover 30 which are the outer surfaces of the connector protection portion 44a form substantially the same plane 70. The outer shape of the damper device D is simplified. As a result, the motor cover 44 and the boundaries f1, f2, and f3 between the connector part 60 can be closed with a waterproof tape or the like without any gaps. Thereby, the waterproofness of the damper apparatus D can be improved. Further, for example, the damper device D can be easily assembled to the refrigerator.

Further, the boundary line 44 c between the first motor cover 43 and the second motor cover 30 is provided at a position straddling the front surface 60 b of the connector portion 60. Thereby, for example, when the waterproof tape or the like is wound so as to cover the boundary line 44 between the first motor cover 43 and the second motor cover 30, the first motor cover 43 and the second motor including the front surface 60b of the connector portion 60 are covered. Since it is possible to suppress the formation of gaps between the covers 30, between the first motor cover 43 and the connector part 60, and between the second motor cover 30 and the connector part 60, a tape or the like Easy to wind. Here, the position across the front surface 60b of the connector part 60 is a position where the vertical position of the boundary line 44c is within the range of the height 60h in the vertical direction of the front surface 60b of the connector part 60.

Further, in FIG. 17, the left and right surfaces and the lower surface of the connector portion 60 are provided with flange portions 60 c that spread laterally and downward in a flange shape. When the flange portion 60c is disposed in the first motor cover 43 and the second motor cover 30, the flange portion 60c will be described later in the side support portions 43h and side support portions 30i, the first motor cover 43, and the second motor cover 43. It is inserted between the motor cover 30 and provided. Thereby, the water that has entered from the front surface 60b of the connector portion 60 through the flange portion 60c can be guided to the infiltration prevention portion 43m or the infiltration prevention portion 30n away from the connector portion 60. The flange portion 60 c is provided in contact with the inner surface 43 f of the first motor cover 43 and the inner surface 30 g of the second motor cover 30. Accordingly, the water that has entered through the gaps f1, f2, and f3 between the front surface 60b of the connector 60 shown in FIG. 16 and the first motor cover 43 and the second motor cover 30 is blocked by the flange 60c. Yes. Here, the front surface 60b side of the connector portion 60 is in front of the connector portion 60, the opposite side is behind the connector portion 60, the opening direction of the opening portion 60a of the connector portion 60 is above the connector portion 60, and the opposite side is the connector portion. The direction other than the front and rear, top and bottom of the connector part 60 is defined as the left and right and side of the connector part 60.

Further, the first motor cover 43 is provided with a side surface support portion 43h that contacts the side surface 60d that is the left and right surfaces of the connector portion 60 and supports the side surface 60d. Further, the second motor cover 30 is provided with a side surface support portion 30i that contacts the side surface 60d that is the left and right surfaces of the connector portion 60 and supports the side surface 60d. Thereby, the position in the left-right direction of the connector part 60 with respect to the 1st motor cover 43 and the 2nd motor cover 30 is being fixed. Further, the intrusion of water along the side surface 60d of the connector part 60 can be suppressed. Further, the connector portion 60 is brought into contact with the side 30j, the side 30m, the side 30p of the second motor cover 30 and the side 43k of the first motor cover 43, thereby suppressing water from entering the motor cover 44. ing. In addition, even when entering the motor cover 44, the rib 60 e is provided, so that the flow path of the water is restricted, and the ingress of water into the motor 40 is suppressed. Furthermore, even when an external force is applied to the connector part 60, the side support part 43h and the side support part 30i are supported so as to suppress deformation of the connector part 60.

Also, ribs that are nipped portions that are narrowed from above and below by the side surface support portions 43 h of the first motor cover 43 and the side surface support portions 30 i of the second motor cover 30 are provided on the side surfaces 60 d on both sides of the connector portion 60. 60e is provided. As a result, the vertical position of the connector portion 60 with respect to the first motor cover 43 and the second motor cover 30 is fixed. Further, the position of the rib 60e in the vertical direction of the connector portion 60 is provided at a position different from the position of the boundary line 44c of the first motor cover 43 and the second motor cover 30 shown in FIG. As a result, the water that falls down along the rib 60e falls to a position different from the boundary line 44c of the first motor cover 43 and the second motor cover 30 shown in FIG. It is easy to flow into the portion 30n, and water is prevented from flowing directly into the motor 40.

Further, the front surface 60 b and the opening 60 a of the connector portion 60 are provided so as to be exposed to the outside from the concave portion 43 j provided on the outer surface of the first motor cover 43 and the concave portion 30 k provided on the outer surface of the second motor cover 30. Yes. Further, an infiltration prevention portion 43m that is a space isolated from the central portion 43p of the first motor cover 43 is provided inside the connector protection portion 44a on the first motor cover 43 side. In addition, an inundation preventing portion 30n that is a space isolated from the central portion 301 of the second motor cover 30 is provided inside the connector protection portion 44a on the second motor cover 30 side. As a result, the water that has entered from the gap between the connector 60 and the first motor cover 43 and the second motor cover 30 is retained by the infiltration prevention portion 43m and the infiltration prevention portion 30n. Therefore, the invading water is prevented from reaching the central portion 43 p side of the first motor cover 43 and the central portion 30 l side of the second motor cover 30.

<Modification>
Below, the modification of the damper apparatus D of previous embodiment is demonstrated. In the following description, configurations having the same or similar structures and functions as those of the previous embodiment are denoted by the same reference numerals as those of the previous embodiment, and detailed description thereof is omitted.

FIG. 15 is a schematic diagram showing a modification of the slat support. As shown in FIG. 15, the opening angle of the insertion port 15 a in the circumferential direction of each slat plate support portion 15 h in which the insertion port 15 a is formed is different from the opening radial direction of the first opening 11. An angle that is not parallel and not perpendicular to the short-side direction 11a that is a direction orthogonal to the length l direction of the slat 20 is inclined with respect to the short-side direction 11a of the first opening 11. It is set to an angle. The “opening diameter direction” of the first opening 11 is a plane direction that defines the opening area of the first opening 11 and is a direction parallel to the XY plane in the coordinate axis display of FIG. Further, the short side direction 11a and “parallel” refer to the direction parallel to the Y axis direction in the coordinate axis display of FIG. 15, and the short side direction 11a and “right angle” refer to the direction parallel to the Z axis direction in the coordinate axis display. Say.

By forming the insertion port 15a of the wing plate support portion 15h obliquely with respect to the short side direction 11a of the first opening portion 11, the insertion port 15a is in a direction at which the rotation operation of the wing plate 20 is halfway. Will be opened. In general, when the damper device D as in the present invention is transported, the damper device D is packed in a direction in which the slat 20 is in a closed state or in a direction in which the slat 20 is fully opened. In the damper device D of the present embodiment, the notch direction of the insertion port 15a is oriented in the direction in which the blade plate 20 is in the middle of the rotation operation. It is prevented from falling off the plate support 15h.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, all the blades 20 are rotated by the driving force of one motor 40, but a configuration in which each blade 20 is rotated using a plurality of motors 40 is conceivable.

In the above embodiment, the drainage ports 10k are formed at the end of the bottom plate 10j on the side of the partition wall 10f. However, a configuration in which the drainage ports 10k are arranged in a grid pattern on the entire surface of the bottom plate 10j can be considered.

In the above embodiment, the fifth gear 55 has rounded the corner 55a between the large diameter portion 55f and the enlarged diameter portion 55e of the shaft portion 55s into a curved surface. The structure etc. which form the recessed part for accumulation are considered.

In the above embodiment, the step portion 22a is formed on the second shaft portion 22, but a configuration in which the step portion 22a is rounded to a curved surface is conceivable.

In the above embodiment, the first gear 51 that directly meshes with the motor pinion 41 is formed so as to mesh with the gear member 50g that penetrates the accommodated layer and is accommodated in the other layer. A configuration may be considered in which a gear member 50g other than the first gear 51 that directly meshes with the pinion 41 is formed by meshing with the gear member 50g that penetrates the accommodated layer and is accommodated in the other layer.

In the above embodiment, the shaft portion 55s of the fifth gear 55 is press-fitted into the fitting hole 56b of the first link member 56. However, the shaft portion of the fifth gear 55 provided with the fitting hole is used as the shaft portion. A configuration in which the first link member 56 is press-fitted is conceivable.

Moreover, in the said embodiment, although the cover part 19 is provided so that the link mechanism 50l may be covered, the cover part 19 is provided so that the power transmission mechanism 50 which consists of the gear member 50g and the link mechanism 50l may be covered. Can be considered.

In the above embodiment, the motor cover 44 is provided by fitting the first motor cover 43 and the second motor cover 30. However, the first motor cover 43 and the second motor cover 30 are integrally formed. The structure etc. to be made can be considered.

D damper device, 10 frame (frame body), 10a flow path part, 10c, 10v stopper part, 10g frame 10 case-like part (case member), 10n gear box, 10t, 30a, 30b, 43a fitting part, 11 1st opening, 12 2nd opening, 15f, 15h, 15l slat support part, 15a insertion port, 16 link drive member support part, 20 slat, 20a front surface, 20b back surface, 21f, 21l 1st shaft part , 22 second shaft part, 30 second motor cover (case member), 31 cover part (protrusion part), 31a cover part 31 cover part, 40 motor (drive source), 41 motor pinion (pinion gear), 42 first Spindle of

gear

51, 43 1st motor cover (case member), 50 power transmission mechanism, 50g gear member, 50l link mechanism 51 1st gear, 55 5th gear (link drive member), 55g gear portion, 55c, 55v stopper portion, 55s shaft portion (output shaft portion), 56 1st link member, 57 2nd link member, a blade 20 Rotation center line, b base end of slat 20, h height of flow channel 10a, l length of slat 20, t tip of slat 20, w width of slat 20

Claims

A driving source;
Multiple slats,
A frame that rotatably supports each of the slats;
A power transmission mechanism that transmits the driving force of the driving source to each slat and rotates each slat, and a damper device comprising:
The frame body has a pair of openings that are an inlet and an outlet of a fluid,
When the hollow portion communicating with the pair of openings in the frame body is used as a flow path portion of the frame body, the plurality of blades are arranged in parallel in the flow path portion,
The power transmission mechanism includes a plurality of gear members,
The frame body has a gear box which is a case body in which the plurality of gear members are accommodated,
The internal space of the gear box is divided into a plurality of layers in the axial direction of the plurality of gear members,
The plurality of gear members housed in each of the layers includes a series of reduction gear trains, with some of the gear members passing through the housed layers and meshing with the gear members housed in other layers. A damper device characterized by comprising:
The gear box is formed by fitting a plurality of case members,
The fitting portions of the plurality of case members are fitted so that an inner peripheral surface of one case member and an outer peripheral surface of the other case member are opposed to each other in the thickness direction of the case members. The damper device according to claim 1.
3. The damper device according to claim 2, wherein the gear box includes three case members.
The plurality of gear members include a pinion gear of the drive source,
The first gear, which is the gear member that directly meshes with the pinion gear, penetrates through the accommodated layer and meshes with the gear member accommodated in another layer. Item 4. The damper device according to any one of Items 3 to 4.
The partition wall that separates the layer in which the pinion gear is housed from the other layer is provided with a covered cylindrical projection protruding to the other layer side,
A part of the first gear is housed in the cylinder of the protrusion,
The protrusion is partially cut away in the circumferential direction, from which the first gear is exposed in the other layer,
5. The damper device according to claim 4, wherein one end of the support shaft of the first gear is fixed to the lid of the protrusion.
The power transmission mechanism has a link mechanism arranged in the flow path section,
The damper device according to any one of claims 1 to 5, wherein a swing range of the link mechanism is within the flow path portion.
The power transmission mechanism has a link mechanism connected to the plurality of slats,
The power transmission mechanism further includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
The frame body includes a plurality of blade support portions that are support portions of the respective blade plates, and a link drive member support portion that is a support portion of the link drive member,
The damper device according to any one of claims 1 to 6, wherein the plurality of blade support parts and the link driving member support part are integrally formed with the frame body.
The power transmission mechanism has a link mechanism connected to the plurality of slats,
The power transmission mechanism further includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
The link mechanism includes a first link member connected to the link driving member, and a second link member connecting the first link member and one end in the length direction of each slat. The damper device according to any one of claims 1 to 7.
The power transmission mechanism has a link mechanism connected to the plurality of slats,
The power transmission mechanism further includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
The link driving member has a gear portion and an output shaft portion,
The driving force of the driving source is transmitted to the link driving member by the plurality of gear members,
The gear portion of the link driving member and the gear member are accommodated in the gear box,
The gear portion of the link driving member or the gear member, and the gear box have a stopper portion that abuts against each other and interrupts transmission of the driving force when the link driving member is at a predetermined angular position. The damper device according to any one of claims 1 to 8, wherein
The power transmission mechanism has a link mechanism connected to the plurality of slats,
The power transmission mechanism further includes a link driving member that is connected to the link mechanism and transmits a driving force of the driving source to the link mechanism.
When the dimension in the direction parallel to the rotation center line of each slat is the length of the slat,
A first shaft portion that is a shaft portion protruding in the length direction is formed at both ends in the length direction of each slat,
The frame body includes a plurality of blade support portions that are support portions of the respective blade plates, and a link drive member support portion that is a support portion of the link drive member,
The link drive member support portion is a bearing that rotatably supports the link drive member,
Each of the plurality of blade support portions is a bearing that rotatably supports the first shaft portion,
The axial hole direction of the link driving member support part and the axial hole direction of each of the blade support parts extend in a straight line or in a parallel direction. The damper device according to one item.
The frame body has a plurality of blade support portions that are support portions of the blades,
At both ends in the length direction of each of the slats, a first shaft part that is a shaft part that protrudes in the length direction and is supported by the slat plate support part is formed,
At one end in the length direction of each of the slats, a second shaft portion that is a shaft portion protruding in the length direction and connected to the second link member is formed,
When the dimension in the direction perpendicular to the length direction on the front or back surface of each slat is the width of the slat,
The damper device according to claim 8, wherein the first shaft portion and the second shaft portion are disposed at both ends in the width direction of the blades.