JPH1058944A - Air passage changeover device and air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a film member from breaking at assembling, in an air passage changeover device using a film type rotary door. SOLUTION: An inner wall of a case 1 is provided with a rib 104 on which an outer circumferential face of an end part in the axial direction of a film member 92 is slided, and this rib 104 is formed with a slope 105 guiding the end part in the axial direction of the film member 92 to the inner circumferential side of the film member 92 at assembling into the case 1. When a rotary door 91 integrated with the film member 92 is assembled in the case 1, even if the end part in the axial direction of the film member 92 is brought in contact with the end face of the rib 104 so as to generate a state of interference, the end part in the axial direction of the film member 92 is guided with the slope 105, the film member 92 can be smoothly moved on the regular assembling position on the inner circumferential side of the rib 104, and hence the film member can be prevented from breaking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air passage switching device and a vehicle air conditioner using the same, and more particularly to an air passage switching device using a film type rotary door.

[0002]

2. Description of the Related Art The present applicant has previously disclosed Japanese Patent Application Laid-Open No. H8-25945.
In Japanese Patent Laid-Open Publication No. H11-264, an air passage switching device that switches a plurality of blow-off air passage openings at a film type rotary door is proposed. In this conventional device, a rotary door having an arc-shaped outer peripheral surface is rotatably provided in a case so as to face a plurality of blow-off air passage openings, and a film member is formed on the outer peripheral portion of the rotary door in an arc shape. , And a door vent for applying wind pressure to the film member is opened in the outer peripheral portion of the rotary door.

Further, the film member is provided with a film opening which can communicate with the blow air passage opening. Then, by rotating the rotary door and selecting the rotation position, the plurality of outlet air passage openings are selectively opened and closed. That is, the portion of the film member having no film opening is pressed against the peripheral edge of the blowing air passage opening on the case side by wind pressure, thereby closing the blowing air passage opening with the film member. The opening and the opening of the blow-off air passage are overlapped with each other so that they communicate with each other to open the air passage.

[0004]

However, in the above-described conventional apparatus, the inventors of the present invention have made a trial manufacture and studied and found that the following inconveniences occur. That is, in this type of air passage switching device having a film type rotary door portion, the diameter of the arc shape drawn by the film member is substantially the same as the diameter of the arc shape of the inner wall surface of the case corresponding to the film member. When assembling the rotary door in the case, the film member may interfere with the case and damage the film member.

Accordingly, the present invention has been made in view of the above problems,
An object of the present invention is to prevent a film member from being damaged during assembly in an air passage switching device using a film type rotary door.

[0006]

In order to achieve the above object, the present invention employs the following technical means. That is, according to the first to fifth aspects of the present invention, on the inner wall surface of the case (1),
A sliding portion (104, 104a) on which the outer peripheral surface of the axial end of the film member (92) slides is provided, and the axial end of the film member (92) is provided on the sliding portion (104, 104a). An inclined surface (105) for guiding the film member (92) to the inner peripheral side when the film member (92) is assembled into the case (1) is characterized.

According to such technical means, the axial end of the film member (92) slides when the rotary door (91) integrated with the film member (92) is assembled into the case 1. Even in the event of contact with the end faces of the portions (104, 104a) and interference, the axial end of the film member (92) is guided by the inclined surface (105) and slides on the film member (92). The part (104, 104a) can be smoothly shifted to the regular assembling position on the inner peripheral side.

For this reason, the film member (92) is assembled at the time of assembly.
Can be prevented from being caught on the end face of the sliding portion (104, 104a) by the axial end.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 shows an entire configuration of a ventilation system according to a first embodiment in which the present invention is applied to a vehicle air conditioner (car air conditioner), and a case 1 forms an air passage of the air conditioner. The case 1 is usually installed in an instrument panel (not shown) at the front of the vehicle compartment. In the case 1, a blower 2 as a blower is disposed in the upper right part (upper part on the front side of the vehicle) in FIG.

The blower 2 comprises a well-known centrifugal multi-blade fan driven by a motor.
Case 1 through an intake duct (not shown) connected to
Air is sucked into the inside and blown in the direction of arrow A. Here, the intake side duct is provided with an evaporator as cooling means for cooling the blown air, and further provided with an inside air intake and an outside air intake on the air upstream side of the evaporator. An inside / outside air switching door that opens one of the intakes is provided. The evaporator is provided in a refrigeration cycle having a compressor driven by a vehicle engine, and cools the blown air by the latent heat of evaporation of the refrigerant.

As shown in FIG. 1, a heater core 3 as a heating means is disposed in a substantially horizontal direction in a lower right portion of the case 1 (a lower portion on the front side of the vehicle) in the case 1. This heater core 3 is used for cooling water (hot water) of a vehicle engine.
Are circulated by a water pump (not shown) to heat the blown air using the engine cooling water as a heat source. An air mixing door 4 is provided at a portion of the heater core 3 on the upstream side of the air. This air mix door 4
1 controls the temperature of the air blown into the vehicle cabin by rotating about the rotation shaft 4a in the direction of arrow X in FIG. 1, and constitutes temperature control means. The opening of the air mix door 4 is adjusted to a degree corresponding to the air conditioning conditions by a manual operation of an occupant or an automatic temperature control signal of an air conditioning control device.

According to the degree of opening of the air mix door 4,
Of the air blown in the direction of arrow A by the blower 2, the hot air flowing through the heater core 3 through the warm air passage 100 in the direction of arrow B and the cool air flowing through the cool air passage 101 through the heater core 3 in the direction of arrow C without passing through the heater core 3. The air volume ratio is adjusted. In this example, the cold air passage 101 and the hot air passage 100 are provided so as to be arranged vertically in FIG. And these passages 10
In most cases, the cool air and the warm air flowing through 0 and 101 are satisfactorily air-mixed in an arc-shaped rotary door 91 described later.

In the case 1, a hot air from a hot air passage 100 is provided at a lower portion of a storage portion of the rotary door 91.
An inlet 103 is provided on the inflow side through which the cool air from the cool air passage 101 flows into the storage portion of the rotary door 91. In the case 1, in the upper left portion (upper portion on the rear side of the vehicle) of FIG. 1, a plurality of, in this example, three, blow-off air passage openings 5, 6, 7 are provided to rotate a rotary door 91 described later. Are provided adjacent to each other along the rotation direction (circumferential direction) of the rotary door 91. Therefore, the end of the partition wall forming the blow-out air passage openings 5, 6, 7 on the case 1 side is formed in an arc surface.

An outlet air passage opening 5 located in the middle of the rotary direction of the rotary door 91 is a face outlet (shown in the figure) which is disposed above the instrument panel in the vehicle compartment and blows air toward the upper body of the occupant. No) and face outlet duct 1
It is communicated by 0. In the direction of rotation of the rotary door 91, a blowing air passage opening 6 located on the rearmost side of the vehicle is disposed below the instrument panel of the vehicle interior, and is a foot outlet (shown in the drawing) for blowing air toward the lower body of the occupant. No) and the foot outlet duct 11.

The opening 7 of the blow-off air passage, which is located closest to the front of the vehicle in the direction of rotation of the rotary door 91, is disposed on the upper surface of the instrument panel in the vehicle interior and close to the glass surface of the vehicle. A defroster outlet (not shown) for blowing out conditioned air toward the inner surface of the glass or side glass is communicated with a defroster duct 12.

The above-mentioned three blow-off air passage openings 5,
Each of 6, 7 is formed in a substantially rectangular shape whose longitudinal direction is the direction from the front surface to the back surface in FIGS. Then, when the blower 2 is driven, the inside air or the outside air is sucked from the intake side duct and guided into the case 1 through the evaporator.
Air flows as in B and C, and the ratio of the amount of cool air to the amount of warm air is adjusted by the opening of the air mix door 4 to obtain a desired blown air temperature. Then, the blown air is blown out from each blowout port in the vehicle through one of the blowout air passage openings 5, 6, 7. In the present embodiment, five blowout modes described later can be selected by the three blowout air passage openings 5, 6, and 7.

In the case 1, there is provided an air passage switching device 9 for adjusting the opening and closing of the three blow-off air passage openings 5, 6, 7 and the opening area thereof. Hereinafter, regarding the air passage switching device 9 according to the first embodiment,
This will be described in detail with reference to FIGS. The air passage switching device 9 includes a rotary door 91 and a film member 92 which constitute a rotary door of the present invention.

The rotary door 91 is made of, for example, resin and has two substantially semicircular end plate portions 91 as shown in FIG.
a, 91a and an arc-shaped circumferential wall 91b having an arc range of approximately 180 ° are integrally formed into a so-called vertically divided semi-cylindrical shape. Further, the end plate portions 91a, 91a
Are provided with rotating shafts 91c, 91c that are located at the center of curvature of the arc of the circumferential wall 91b and protrude outward in the axial direction. Further, between the flat end portions of the two end plate portions 91a, 91a, there is formed a planar opening portion 91j through which the air from the above-described inflow side opening portion 103 flows into the rotary door 91.

As shown in FIG. 3 and the like, four axially elongated door vents 91d are formed at substantially equal intervals in the circumferential wall 91b. Thus, the circumferential wall 91b has elongated beams 91e extending in the axial direction at two places at both ends in the circumferential direction and three places between the door ventilation ports 91d, and most of the remaining portions are open. It is in the form of.

In the rotary door 91, a bent portion 9 at one circumferential end of the film member 92 is provided at one circumferential end (right end in FIGS. 1 and 3) of the circumferential wall 91b.
Pin members (attaching means) 91g for attaching 2k to the rotary door 91 are integrally formed in a line in the axial direction. A sliding wall 91h is provided on the other end (left end in the drawing) of the circumferential wall 91b of the rotary door 91 in the circumferential direction.
Is provided. A large number of pin members 91i protrude outward from the outer peripheral surface of the slide wall portion 91h.
Are formed integrally in a line in the axial direction.

On the other hand, the film member 92 is formed of a resin material having flexibility (flexibility), no air permeability, and low frictional resistance. Specifically, in this example, the film member 92 is formed from a PET (polyethylene terephthalate) film. Here, since it is necessary to increase the rigidity of the film member 92 to some extent, in this example, a PET film having a thickness of 188 μm is used.

In the film member 92, a film opening 92a which is always in communication with the door ventilation opening 91d is formed at an intermediate position in the arc-shaped circumferential direction. In this example, the film openings 92a are formed of a plurality of through holes arranged in a line in the axial direction, and each of the film openings 92a is formed in an elongated substantially hexagonal shape. The film opening 92a has a maximum circumferential length in a state where the film member 92 is attached to the rotary door 91, substantially equal to the maximum width of the blowout air passage openings 5 and 6 for the face and the foot. It has become.

Further, the shape and area of all the film openings 92a are determined by the blow air passage openings 5,
It is almost equivalent to 6. However, actually, since there is a partition located between the respective film openings 92a, the film openings 92a are slightly smaller. Thereby, as shown in FIG. 1, when the rotary door 91 opens only the blow-off air passage opening 5 for the face (at the time of the face mode), the blow-off air passage opening 5 for the face and the film opening of the film member 92. Since the opening edge coincides with (wraps) with the opening 92a, it is possible to minimize the ventilation resistance in the face mode. Note that the same applies to the case where the foot outlet air passage opening 6 is fully opened.

On the other hand, of both end portions (left and right edges in FIGS. 1 and 3) of the film member 92,
A plurality of mounting holes 92b are formed. Specifically, the mounting hole 92b is formed as a circular hole that fits into the pin member 91g. A plurality of slide holes 92c are formed at the left end. The slide hole 92c is formed as an elongated hole into which a pin member 91i of a slide wall 91h formed at the other end in the circumferential direction of the rotary door 91 is movably fitted. Here, the slide hole 92c is configured so that the longitudinal direction of the elongated hole is oriented in the circumferential direction of the film. The longitudinal dimension of the slot forming the slide hole 92c is determined by the film member 92 and the case 1
The size is set to a size that can sufficiently absorb the dimensional variation of.

In mounting the film member 92 in an arc shape on the outer peripheral side of the circumferential wall 91b of the rotary door 91, first, as shown in FIG. 3, one end of the film member 92 is inserted into the mounting hole 92b. The bent portion 92k is formed by being bent toward the inner diameter side by a predetermined length including the bent portion. Then, in this state, the film member 92 is covered from above the circumferential wall 91b of the rotary door 91, and the circular mounting hole 92b of the bent portion 92k of the film member 92 is fitted to the pin member 91g.

On the other hand, an elongated slide hole 92c on the other end side of the film member 92 is inserted into the pin member 9 of the slide wall 91h.
1i. Thereafter, the resin pin member 91 is formed.
g is heated until the film member 92 is pressed against the surface of the rotary door 91, and the head of the pin member 91g is enlarged in the form of a rivet. Thereby, the film member 92
Can be fixed to one end of the circumferential wall 91b of the rotary door 91 in the circumferential direction.

Similarly, the head of the resin pin member 91i of the slide wall portion 91h is heat-squeezed. The heat-staking portion of the head of the pin member 91i minimizes the amount of deformation in the pin axis direction. Thereby, a gap (see FIGS. 1 and 2) is formed between the film member 92 and the outer peripheral surface of the slide wall portion 91h. As a result, the other end in the circumferential direction of the film member 92 is not fixed to the outer peripheral surface of the slide wall portion 91h of the rotary door 91, and extends in the circumferential direction within the longitudinal dimension of the slide hole 92c. Is a free end 92d in which movement is free.

The length (circumferential length) of the film member 92 depends on its own rigidity and the wind pressure received from the inner peripheral side.
The size is set to be able to hold an arc shape along the arc surface on which 6, 6 are formed. Further, the film member 92
The opening 92a of the rotary door 91 has three ventilation holes 9
1d, wraps around the door ventilation opening 91d, which is located second in the clockwise direction from the left end in the circumferential direction in FIGS. 1 to 3, and the inner and outer peripheral portions of the rotary door are always opened at the film opening 92a. It is supposed to.

The rotary door 91 constructed as described above
Can rotate on the wall of the case 1 such that the rotation shaft 91c of the both end plate portions 91a coincides with the center of curvature of the arc-shaped inner wall surface on which the blow-out air passage openings 5, 6, 7 on the case 1 side are aligned. In this case, as shown in FIG. 1, a lever 21 is fixed to one of the rotating shafts 91a, and one end of the control cable 22 is connected to one end of the lever 21. The other end of the control cable 22 is connected to an air outlet mode switching lever (air outlet mode switching operating means) provided on an air conditioning control panel (not shown) in the vehicle cabin. Thereby, the rotary door 91 rotates in the rotation direction (FIG. 1) based on the manual operation of the blowout mode switching lever.
(Arrows D and E directions).

Next, the operation of the above configuration will be described.
When the blower 2 is operated, the inside of the case 1 is indicated by arrows A,
Air flows as indicated by B and C, and the blown air reaches the inner peripheral side of the rotary door 91 from the flat opening 91j of the rotary door 91, where the cool air and the hot air are mixed. Then
The blown air passes through the ventilation opening 91d of the rotary door 91 and the opening 92a of the film member 92, and any one of the blowout air passage openings 5, 6, 7 on the case 1 wrapped with the film opening 92a or From multiple outlets to each outlet, blows out into the passenger compartment.

In this embodiment, when the user manually operates the air outlet mode switching lever in the vehicle, the operating force is directly transmitted to the rotary door 91 via the control cable 22 and the lever 21, and the rotary door 9 is operated.
1 rotates in the direction of arrow D or E. Here, five blowing modes (a face mode, a bi-level mode, a foot mode, a foot differential mode, and a defroster mode) can be selected by the rotational displacement of the rotary door 91.

The rotary position of the rotary door 91 shown in FIG.
Completely wraps around the outlet air passage opening 5 for the face. Then, in this state, of the film members 92,
The portion where the opening 92a is not provided is protruded to the outer peripheral side by the wind pressure, so that it is securely pressed against the peripheral edges of the outlet air passage opening 6 for the foot and the outlet air passage opening 7 for the defroster. Parts 6 and 7 are securely closed.

As a result, the air in the case 1 is taken into the inside of the rotary door 91 from the plane opening 91j of the rotary door 91, and is transmitted from the air outlet opening 5 for the face through the door ventilation opening 91d and the film opening 92a. It flows into the face duct 10 and is blown into the vehicle interior only from the face outlet. The rotary position of the rotary door 91 in FIG. 2 is in the defroster mode, and the end of the rotary door 91 on the pin member 91g side fully opens the blowout air passage opening 7 for the defroster. For this reason, the air from the inflow side opening 103 of the case 1 directly flows into the blowout air passage opening 7 for the defroster without passing through the rotary door 91, and the air from the inflow side opening 103 flows into the film member 92. The air flows into the blow-out air passage opening 7 through the inside of the rotary door 91 through the opening 92a and the door ventilation opening 91d.

At the same time, the blowout air passage openings 5 and 6 for the face and foot are fully closed by the portion of the film member 92 where the opening 92a is not provided. As a result, the blown air in the case 1 flows only into the blowout air passage opening 7 for the defroster, blows out from the defroster outlet through the defroster duct 12 toward the inner surface side of the window glass, and prevents fogging of the window glass.

Next, in the bi-level mode, the opening 92a of the film member 92 straddles both the half of the blown air passage opening 5 for the face and the half of the blown air passage opening 6 for the foot. The rotary door 9 is positioned at a position where it wraps (a position rotated counterclockwise by a predetermined angle from FIG. 1).
1 rotates. As a result, the air taken into the rotary door 91 is supplied to the blowout air passage opening 5 for the face through the door ventilation opening 91d and the film opening 92a.
Then, the air flows into the outlet air passage opening 6 for the foot, and the air is simultaneously blown into the vehicle compartment from both the face outlet and the foot outlet.

Next, in the foot mode, when the rotary door 91 is further rotated counterclockwise from the state of the bi-level mode by a predetermined angle, the film opening 92a opens the foot air passage for the foot. Opening 6
Wraps completely and blows warm air from the foot outlet to the feet of the occupants. At the same time, the blow-off air passage opening 5 for the face is completely closed, while the blow-off air passage opening 7 for the defroster is not completely closed in this example. The inside air is leaked to a small extent from the opening 7 of the blow-off air passage for the defroster so that the effect of preventing fogging of the window glass can be exhibited.

Next, in the foot differential mode, the rotary door 91 is further rotated clockwise by a predetermined angle from the state of the defroster mode in FIG. 2, so that the film opening 92a opens the foot blowing air passage opening. In addition to being substantially wrapped around the portion 6, the pin member 91 g side end of the rotary door 91 opens substantially half of the blowout air passage opening 7 for the defroster.

At this time, the blow-off air passage opening 5 for the face is fully closed by a portion of the film member 92 where the opening 92a is not provided. As a result, the blast air
The airflow flowing directly into the blower air passage opening 7 for the defroster bypassing the rotary door 91 and the door vent 9
1d, the air flow flowing into the foot air outlet opening 6 through the film opening 92a and the film opening 9
2a, after flowing into the door through the door vent 91d, the air flows again into the foot air outlet opening 6 through the door vent 91d and the film opening 92a, and the foot outlet. Air is blown out from both the outlet and the defroster outlet at the same time.

Since the circumferential wall 91b of the rotary door 91 has a circular arc range of approximately 180 degrees, the opening area of the flat opening 91j, which is the air inlet of the door, is maximized.
This contributes to reducing ventilation resistance. by the way,
As shown in FIGS. 2 and 4, a film member 92 is provided at the axial end of the blowout air passage opening 5 for the face, the blowout air passage opening 6 for the foot, and the blowout air passage opening 7 for the defroster. An arc-shaped rib 104 forming a sliding portion on which the outer peripheral surface of the axial end portion slides is formed. This rib 104
Is integrally formed on the inner wall surface of the case 1. FIG. 4 is an enlarged view of each of the air passage openings 5, 6, and 7 as viewed in the direction of arrow F in FIG.

FIG. 2 (b) shows the inner peripheral surface of the rib 104.
As shown in FIG. 7, when the film member 92 receives wind pressure, the outer peripheral surface of the axial end thereof comes into pressure contact and slides, thereby performing sealing at the axial end of the film member 92. , To prevent air leakage. On the end surface of the rib 104, an inclined surface 105 for guiding the axial end of the film member 92 to the inner peripheral side of the film member 92 when assembling into the case 1 is formed.

The film member 92 is formed of a flexible material as described above, and is movably attached to the rotary door 91 at the free end 92d.
The mounting posture is not fixed and can be relatively freely deformed or displaced. However, rib 104
The inclined surface 105 is formed on the end surface of the case 104, so that when the rotary door 91 and the film member 92 are integrated into the case 1, the axial end of the film member 92 is attached to the end surface of the rib 104. Even in the event of contact and interference, the axial end of the film member 92 is guided by the inclined surface 105 of the end surface of the rib 104, and the film member 92 is moved to the regular assembly position on the inner peripheral side of the rib 104 ( 2B (the position indicated by the two-dot chain line in FIG. 2B).

For this reason, it is possible to prevent the axial end of the film member 92 from being caught on the end surface of the rib 104 at the time of assembly and being damaged. In the example shown in FIGS. 1 and 2, the rib 104 having the inclined surface 105 is formed only at the axial end of each of the air passage openings 5, 6, and 7. The rib 104 having the inclined surface 105 may be formed over the entire circumference of the rotation region of the above. However, as in the former (examples shown in FIGS. 1 and 2), the rib 1
If the air passage openings 04 are formed only at the axial ends of the air passage openings 5, 6, and 7, the installation range of the ribs 104 at which the axial ends of the film member 92 may interfere is reduced. Good stickiness.

Also, when the film member 92 is assembled into the case 1, the opening 92a of the film member 92 may be caught on the periphery of each of the air passage openings 5, 6, and 7 of the case 1 and interfere with each other. is there. In order to solve the problem of the interference of the opening 92a of the film member 92, the rotational position of the rotary door 91 must be changed as shown in FIG.
The rotary door 91 and the film member 92 are set in the rotation position in the defroster mode shown in FIG. Thus, the opening 92a of the film member 92 can be located on the inflow-side opening 103 side, which is the opposite side to the air passage openings 5, 6, and 7. As a result, the opening of the film member 92 Part 92
a can be prevented from being caught in the peripheral portions of the air passage openings 5, 6, 7 of the case 1 and interfering with each other. (Second Embodiment) FIG. 5 shows a second embodiment in which the outer peripheral surface of the axial end of the film member 92 slides, instead of the rib 104 of the first embodiment. In the example, an arc-shaped stepped surface 104a is formed at an axial end of each of the air passage openings 5, 6, and 7, and an inclined surface 105 is formed so as to be continuous with the stepped surface 104a.

Even when the stepped surface 104a is formed in this manner, the axial end of the film member 92 is
The film member 92 can be smoothly moved to the regular assembling position on the inner peripheral side of the rib 104 (the position indicated by the two-dot chain line in FIG. In the second embodiment, a circle having a diameter sufficiently larger than the arc-shaped stepped surface 104a of each of the air passage openings 5, 6, and 7 is provided at the axial end of the opening 103 on the air inflow side of the case 1. Arc-shaped stepped surface 10
6 is formed. Due to the presence of the stepped surface 106, the film member 92 is connected to the opening 103 on the air inflow side during assembly.
Can be shifted to the side. Therefore, the film member 92 and the rotary door 91 can be easily assembled even if the arc-shaped stepped surface 104a is formed at the axial end of each of the air passage openings 5, 6, and 7. (Other Embodiments) In the first and second embodiments described above, the rotary door 91 is formed in a semi-cylindrical shape having a circumferential wall 91b. Since the film member 92 is disposed, the shape of the rotary door 91 does not necessarily have to be formed in a semi-cylindrical shape. For example, it is possible to make the rotary door 91 into an elliptical semi-cylindrical shape or the like, and make the film member 92 into an arc shape along the inner wall surface on the case 1 side.
Even in this case, the same function and effect can be exhibited.

In the first and second embodiments, the film member 92 is disposed with a gap between the outer peripheral surface of the peripheral wall 91b of the rotary door 91 and the outer peripheral surface of the peripheral wall 91b of the rotary door 91. Beam 91e and film member 92
An elastic member, such as an elongated urethane foam, extending in the axial direction is disposed between the two members to maintain the good arc shape of the film member 92, thereby improving the sealing performance and reducing noise by the film member 92. You may do so.

In the first and second embodiments, the film opening 92a is constituted by a plurality of openings, but the film opening 92a is not limited to a plurality and may be a single opening. Others
The present invention is not limited to the vehicle air conditioner described in the above embodiment, but can be applied to various devices for opening and closing the air passage, and can be implemented with appropriate modifications without departing from the gist. is there.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a main part of a vehicle air conditioner to which the present invention is applied.

FIG. 2 shows a first embodiment of the present invention;
(A) is an enlarged sectional view of a rotary door portion shown in FIG. 1,
(B) is GG sectional drawing of (a).

FIG. 3 is an exploded perspective view of a rotary door part of FIGS.

4 is an air passage opening 5, 6, 7 as viewed from the direction of arrow F in FIG. 2;
FIG. 4 is an enlarged perspective view of FIG.

FIG. 5 shows a second embodiment of the present invention;
(A) is an enlarged sectional view of a rotary door part, (b) is HH sectional view of (a).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Case, 2 ... Blower, 5, 6, 7 ... Blowing air passage opening part, 9 ... Air passage switching device, 91 ... Rotary door, 9
1b: circumferential wall, 91d: door vent, 91g, 91i ...
Pin member, 92: film member, 92a: film opening, 103: inflow side opening, 104: rib, 104a ...
Stepped surface, 105: inclined surface, 106: stepped surface for film member escape.

Claims (5)

[Claims] 1. A case (1) forming an air passage, and a rotary door (91) rotatably disposed in the case (1) and having an arc-shaped circumferential wall (91b).
A door vent (91d) opened in a circumferential wall (91b) of the rotary door (91); and in the case (1), the rotary door (9).
An air passage opening (5, 6, 7) opened in a region where the circumferential wall (91b) of (1) rotates; and an outer peripheral side of the circumferential wall (91b) of the rotary door (91), A flexible film member (92) that rotates together with the rotary door (91), and the film vent (91)
d) and a film opening (92a) opened so as to be always in communication with the film opening (92). By rotating the rotary door (91), the film opening (92a) and the air passage opening (5, 6. An air passage switching device for selecting communication or shutoff with the film member (6, 7), wherein the film member (9) is provided on an inner wall surface of the case (1).
The sliding portion (104,
104a), and the axial end of the film member (92) is attached to the sliding portion (104, 104a) on the inner peripheral side of the film member (92) when the film member (92) is assembled into the case (1). An air passage switching device, wherein an inclined surface (105) for guiding the air passage is formed. 2. The sliding portion includes at least the air passage openings (5, 6,...) Of an inner wall surface of the case (1).
7) Arc-shaped rib (104) formed at the axial end
The air passage switching device according to claim 1, wherein the inclined surface (105) is formed on an end surface of the rib (104). 3. The sliding portion includes at least the air passage openings (5, 6,...) Of the inner wall surface of the case (1).
7) An arc-shaped stepped surface (104) formed at the axial end
The air passage switching device according to claim 1, wherein the inclined surface (105) is formed so as to be continuous with the stepped surface (104a). 4. The air passage opening is an opening (5, 6, 7) on the air blowing side, and in the case (1),
An opening (103) on the air inflow side is provided at a portion facing the openings (5, 6, 7) on the air outflow side, and the opening (103) on the air inflow side has the arc shape. The air passage switching device according to claim 3, wherein a stepped surface (106) for releasing a film member having a diameter larger than that of the stepped surface (104a) is formed. 5. An air passage switching device according to any one of claims 1 to 4, wherein the air passage opening includes a face air opening (5) and a foot air passage opening. (6) and a blower air passage opening (7) for a defroster. The blower air passage openings (5, 6, 7) are formed by the film member (92) and the rotary door (91). A vehicle air conditioner that opens and closes.