JP2006241902A - Door body opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain improvement in design, an increase in storage capacity and reduction of manufacturing cost by the rational layout improvement of an elastic energizing mechanism utilizing a function of moving a door body into an open position on the outer side of an opening when operated to open. <P>SOLUTION: A first mounting member 4 mounted to the internal wall of a storage chamber S, and a second mounting member 5 mounted to the back face of the door body 1 for closing the opening of the storage chamber S are connected through a link mechanism B for swingingly guiding the door body 1 over a closed position and an open position moved to the outer side of the opening, and the elastic energizing mechanism C is provided for alternatively supporting the door body 1 into the closed position and the open position following the swing of the link mechanism B. The elastic energizing mechanism C is provided between the second mounting member 5 and the link mechanism B. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a door body opening / closing device mounted on a fitting such as a tall cabinet, a sink cabinet, a hanging cupboard, or furniture such as a cupboard, a bookcase, a shoe rack, and the like. 1 attachment member and the 2nd attachment member attached to the back surface of the door body which closes the opening part of a storage chamber carry out rocking | fluctuation guidance over the open position which moved the door body to the closed position and the outer side of the opening part. The present invention relates to a door body opening and closing device that is connected via a link mechanism and is provided with an elastic biasing mechanism that selectively holds the door body between a closed position and an open position as the link mechanism swings. .

  In the conventional door body opening / closing device, among the first attachment members attached to the inner wall portion of the storage chamber, two front portions close to the opening portion of the storage chamber and the back surface of the door body that closes the opening portion of the storage chamber Swing over the two positions of the second mounting member to be mounted, between a closed position for closing the opening while the door body is maintained in a parallel or substantially parallel posture, and an open position moved to the outside of the opening. A pair of swing links of the guiding link mechanism is provided, of which the first swing link base portion that bends and protrudes to the outer side of the opening when the door body is in the open position and the first substantially opposite to the base portion in the front-rear direction. A tension coil spring of an elastic urging mechanism is provided between the rear portion of the mounting member and selectively holds the door body in the closed position and the open position as the swing link swings (patent) Reference 1).

Patent No. 3611498

In the conventional door body opening / closing device, the tension coil spring of the elastic biasing mechanism is provided across the rear part of the first attachment member attached to the inner wall part of the storage chamber and the base part of the first swing link. When the door body is swung to the open position, a relatively large tension coil spring is visually observed through the opening of the storage chamber, and the tension coil spring projects inward from the swing link. Not only is the feeling lost, it gives the impression that the apparent storage volume has decreased.
In particular, in the case of providing a cover that covers the tension coil spring, although it is possible to improve the design feeling, there is a problem that the impression that the apparent storage volume is further reduced and the manufacturing cost is increased. is there.

  The present invention has been made in view of the above-described actual situation, and its main problem is that an elastic urging mechanism using a function of moving a door body to an open position on the outer side of an opening during an opening operation. The object of the present invention is to provide a door opening / closing device capable of improving the design feeling, increasing the apparent storage volume, and reducing the manufacturing cost by rationally improving the layout.

According to a first characteristic configuration of the present invention, a first attachment member attached to the inner wall portion of the storage chamber and a second attachment member attached to the back surface of the door body that closes the opening of the storage chamber are parallel to the door body. It is connected via a link mechanism that swings and guides between a closing position and an open position that moves to the outside of the opening while maintaining a substantially parallel posture, and the door body as the link mechanism swings. A door body opening and closing device provided with an elastic biasing mechanism that alternatively holds the closed position and the open position,
The elastic urging mechanism is provided between the second mounting member and the link mechanism.

  According to the above characteristic configuration, since the elastic biasing mechanism is provided between the second attachment member attached to the back surface of the door body and the link mechanism, even when the door body is swung to the open position. The front side of the elastic urging mechanism is covered with a door in the open position.

  Therefore, when the door body is swung to the open position, a relatively large elastic urging mechanism does not appear on the storage chamber side, and the design feeling at the time of opening the door can be improved and apparent storage is achieved. It is possible to give an impression that the volume is increased, and it is not necessary to provide a cover structure that covers the elastic urging mechanism, or a simple structure can be used even if a cover structure is provided, thereby reducing the manufacturing cost. be able to.

  According to a second characteristic configuration of the present invention, the link mechanism includes a pair of swing links that swing and guide the door body to a closed position and an open position while maintaining the door body in a parallel or substantially parallel posture. A coil spring provided in the elastic urging mechanism is provided between the pivot connection part side of one first swing link pivotally connected to the other end side of the second attachment member and one end side of the second attachment member. It is in the point provided.

  According to the above characteristic configuration, the coil spring is provided between the one end side of the second mounting member and the pivot connecting portion side of the first swing link pivotally connected to the other end side thereof. For example, as compared with the case where this coil spring is provided between one end side of the second mounting member and the pivot connecting portion side of the other second swing link pivotally connected to the intermediate position side thereof. Since the coil spring can be disposed close to the back side of the door body while securing a large tension space for the coil spring, the door body that is swung to the open position is placed on the other side of the opening. It is possible not only to promote the improvement of the design feeling during the door opening operation, but also to reduce the amount of protrusion of the door body that is swung to the open position.

  A third characteristic configuration according to the present invention is a portion of the first swing link that is closer to one end side of the second mounting member than a pivot connecting portion with the second mounting member when the door body is in the closed position. And an attachment portion capable of selectively attaching the other end portion of the coil spring of the elastic biasing mechanism is formed at a portion away from one end side of the second attachment member.

  According to the above characteristic configuration, when the coil spring is stretched between the one end side of the second mounting member and the pivot connection portion side of the first swing link pivotally connected to the other end side thereof, If the other end side of the coil spring is attached to a portion that is closer to one end side of the second mounting member than the pivot connecting portion of the first swing link with respect to the second mounting member, the tension distance of the coil spring is shortened, If the other end side of the coil spring is attached to a part farther from the one end side of the second attachment member than the pivot connecting portion of the first swing link with respect to the second attachment member, the extension distance of the coil spring becomes longer.

  Therefore, in the door body opening / closing device of the type that opens and swings the door body downward, the door body is suddenly opened and rocked by attaching the other end of the coil spring to a portion approaching one end of the second mounting member. In the door body opening / closing device of the type that opens and swings the door body upward, by attaching the other end side of the coil spring to a part away from the one end side of the second attachment member, the door It can be reliably opened and swung against the weight of the body.

  Therefore, in addition to the coil springs, the coil springs are attached to the two attachment parts formed on the pivot connection part side of the first swing link in a state where the extension distances of the coil springs are different from one end side of the second attachment member. Only by selectively changing the end side, it is possible to produce a lower opening type door body opening / closing device and an upper opening type door body opening / closing device.

  According to a fourth characteristic configuration of the present invention, the second mounting member includes a bottom plate portion having a mounting portion for the door body and a pair of side plate portions formed to bend on both sides of the bottom plate portion. A pair of swing links constituting a link mechanism are pivotally connected to the part, and the other side plate portion is configured to have a height lower than that of the one side plate portion.

  According to the above characteristic configuration, the strength of the second mounting member can be improved by forming the second mounting member by bending the side plate portions on both sides of the bottom plate portion having the mounting portion to the door body. In addition, the height of the other side plate portion is lower than the one side plate portion to which the pair of swing links constituting the link mechanism is pivotally connected, so that both steps with respect to the one side plate can be utilized using the step. The mounting work of the swing link can be facilitated.

  According to a fifth characteristic configuration of the present invention, the second attachment member includes a bottom plate portion provided with an attachment portion to the door body, a pair of side plate portions formed to bend on both sides of the bottom plate portion, and one end of the bottom plate portion. A mounting plate portion having a mounting portion of an elastic urging mechanism bent to the side is provided, and the inner side surface of the mounting plate portion is abutted against the end surfaces of both side plate portions.

  According to the above characteristic configuration, the second mounting member is formed by bending the mounting plate portion having the side plate portion and the mounting portion of the elastic biasing mechanism on both sides and one end side of the bottom plate portion provided with the mounting portion to the door body. By configuring, the strength of the second mounting member can be improved, and even if a large biasing reaction force of the elastic biasing mechanism acts on the mounting plate portion every time the door body is opened and closed, the mounting plate The urging reaction force acting on the portion can be reliably distributed and supported on the end surfaces of the both side plate portions applied to the inner surface of the mounting plate portion.

  According to a sixth characteristic configuration of the present invention, there are three mounting portions for selectively pivotally connecting two types of both oscillating links having different lengths constituting the link mechanism to the first mounting member. Are formed in a shared state, and the second mounting member has three mounting portions for selectively pivotally connecting two types of both swing links having different lengths. It is in the point formed in the state which shares one of these.

  According to the above characteristic configuration, when the length of the door body in the swing opening / closing direction of the link mechanism is different, it is necessary to prepare two types of both swing links having different lengths constituting the link mechanism. It is only necessary to prepare one type of the first mounting member and the second mounting member, and the first and second mounting members are used for selectively pivotally connecting two types of both swing links having different lengths. Since the three attachment portions are formed so as to share one of them, the number of processing steps of the first and second attachment members themselves can be reduced and the structure can be simplified.

  According to a seventh characteristic configuration of the present invention, the first attachment member is contacted with the short-side swing link between the common attachment portion and the short-side swing link attachment portion positioned in the vicinity thereof. A stopper that regulates the opening position of the door body by contact with the long-side swing link between the first mounting portion of the stopper member that regulates the opening position of the door body and the both mounting portions other than the common mounting portion. The second mounting portion of the member is formed.

  According to the above characteristic configuration, the first attachment member is in contact with the first attachment portion of the stopper member that restricts the opening position of the door body by contact with the short-side swing link and the long-side swing link. Since the second mounting portion of the stopper member for restricting the opening position of the door body is formed by this, only one type of the first mounting member needs to be manufactured, and the manufacturing cost can be reduced.

  According to an eighth characteristic configuration of the present invention, the door body is configured by mounting a translucent body on an annular door frame body, and each second mounting member attached to the left and right vertical shafts of the door frame body. Of the two swing links of the link mechanism to be pivotally connected, the pivot support connecting portion side of the first swing link corresponding to the lower or upper arm of the door frame body in a state where the door body is in the closed position. The connecting member is erected in a state where the door body is positioned along the lower surface of the door frame or the upper surface of the upper frame when the door body is in the closed position.

  According to the above-described characteristic configuration, even when the transparent body is mounted on the annular door frame body and the door body is configured, each second mounting member is mounted on the left and right vertical shafts of the door body, and each second Of the two swinging links of the link mechanism that is pivotally connected to the mounting member, the pivotal connection of the first swinging link that corresponds to the lower or upper arm of the door frame body with the door body in the closed position By installing the connecting member over the part side, the door body can be smoothly opened / closed and swinged with less deviation of the swinging motion of both link mechanisms facing each other in the opening width direction. For this reason, the long connecting member constructed over the pivot connecting portion side of the first swing link on the left and right is along the lower surface of the door frame or the upper surface of the upper frame when the door is in the closed position. Therefore, it is difficult to see long connecting members through the translucent body of the door, and the appearance when the door is closed It is possible to Takumi improve.

[First Embodiment]
FIGS. 1-13 shows the opening / closing apparatus of the door body 1 equipped with fittings, such as a tall cabinet, a sink cabinet, and a hanging cupboard, or furniture, such as a cupboard, a bookshelf, and a shoe rack, and the door which forms the storage room S is shown. Among the constituent members of the mounting frame A, the plurality of screws 3 are fixed to each of the inner wall surfaces (inner wall portions) of the side plates (or vertical rods) 2 facing each other in the left-right direction that is the opening width direction of the storage chamber S. A metal rectangular flat plate-shaped first mounting member 4 and a metal second mounting member 5 fixed to the back surface of the door body 1 with a plurality of screws 3 along the vertical direction are provided in the storage chamber S. The door 1 is connected via a metal link mechanism B that swings and guides the door 1 while maintaining a parallel or substantially parallel posture between a closed position for closing the opening and an open position moved to the outside of the opening. As the link mechanism B swings, the door 1 is closed. An open position and to alternatively resilient biasing mechanism C for holding is provided between the second attachment member 5 and the link mechanism B.

  Further, among the urging force adjusting operation means D for adjusting the elastic urging force by the elastic urging mechanism C and the pair of upper and lower swing links 6, 7 constituting the link mechanism B, the second mounting member 5 is vertically moved. An opening position adjusting means E is provided that can change the opening position of the door body 1 into a plurality of positions by abutting with one first swing link 6 pivotally connected to one end side of the door body 1.

  In the door body opening and closing device of the present invention, as shown in FIGS. 1 and 3, an upper opening type in which the door body 1 is moved upward to the outer side on the upper side of the opening during the door opening operation, and FIGS. As shown in FIG. 4, there is a lower opening type in which the door body 1 is moved downward to the outer side on the lower side of the opening during the door opening operation. Further, although not shown, the door body 1 is opened during the door opening operation. There is a lateral opening type in which the part is moved laterally to the right or left side of the part.

  Therefore, in the said embodiment, although it demonstrates centering on the door body opening / closing apparatus of an upper opening type and the door body opening / closing apparatus of a lower opening type, Furthermore, also in these both types, FIGS. 5-7, FIG. As shown in FIGS. 1 to 4, 8, and 9, there are a short form in which the height H <b> 1 of the door body 1 is small and a long form in which the height H <b> 2 of the door body 1 is large. .

  The upper opening type door body opening / closing device and the lower opening type door body opening / closing device described above are configured in the same structure, and the structural difference between the two types is a component of the elastic biasing mechanism C. It is only the point which changes the attachment position of the other end part of the tension coil spring 10.

  Moreover, the short form and long form of a door body opening / closing apparatus are as follows. As shown in FIGS. 5-7, the pivot connection part with respect to the 1st attachment member 4 as the both rocking links 6 and 7 which comprise the link mechanism B. Both swing links 6 and 7 for short lengths having short distances L1, L2 between the pivot axes of the pivot axes 6A and 7A and the pivot axes 6B and 7B with respect to the second attachment member 5; As shown in FIGS. 1-4, the axis | shaft of the pivotal support axis of pivot connection part 6A, 7A with respect to the 1st attachment member 4, and the pivot support axis of pivot connection part 6B, 7B with respect to the 2nd attachment member 5 Although it is necessary to prepare the long swinging links 6 and 7 having a long inter-center distance L3 and L4, the first mounting member 4 and the second mounting member 5 are used in a single type.

  As the door body 1, those having various existing shapes can be used. In the present embodiment, as shown in FIGS. 1 and 2, a door frame body 1 </ b> A formed in a horizontally long rectangular ring shape in front view. And the transparent plate glass 1B, which is an example of a translucent body, is used, and the first mounting member 4 is arranged in the vertical direction on each of the back surfaces of the left and right vertical rods 1a of the door frame 1A. Is fixed with screws 3 in a posture along the direction.

  As shown in FIGS. 9 and 10, the pivotal connecting portions 6 </ b> A and 7 </ b> A on the proximal end side of the short-side swing links 6 and 7 and the long-side swing link are provided at three locations on the top and bottom of the first mounting member 4. Three attachment portions for pivotally connecting the pivot connection portions 6A and 7A on the base end side of the sixth and seventh pivots around the pin axis of the first and second connection pins 12 and 13 along the horizontal direction. Mounting holes 4a, 4b, 4c, which are an example of the above, are formed so as to penetrate one of the mounting holes 4a, and a plurality of mounting portions to the side plate 2 of the door mounting frame A are a plurality of examples. A screw hole 11 is formed through.

  As shown in FIGS. 6 and 10, the pivot connecting portion 6 </ b> A on the base end side of the short first swing link 6 pivotally connected to one end side in the vertical direction of the second mounting member 5 is: Of the mounting holes 4 a, 4 b, 4 c of the first mounting member 4, it is pivotally attached to a second mounting hole 4 b disposed near the vertical center of the first mounting member 4, and the vertical direction of the second mounting member 5 A pivot connecting portion 7A on the base end side of the short-side second swing link 7 pivotally connected to the intermediate position is disposed on one end side in the vertical direction of the opening and at a position closer to the front when the door is closed. It is pivotally attached to the first mounting hole 4a.

  As shown in FIGS. 3 and 9, the pivot connecting portion 6 </ b> A on the base end side of the long first swing link 6 pivotally connected to one end side in the vertical direction of the second mounting member 5 is as follows. Of the mounting holes 4a, 4b, and 4c of the first mounting member 4, the second mounting member 5 is pivotally attached to a third mounting hole 4c disposed at a position closer to the center in the vertical direction of the opening when the door is closed. The pivot connecting portion 7A on the base end side of the long-side second swing link 7 pivotally connected to the upper and lower center side position is a common end position on the one end side in the vertical direction of the opening and the front side position. It is pivotally attached to the first mounting hole 4a.

  The second mounting member 5 is formed by bending a bottom plate portion 5A having a plurality of screw holes 14 which is an example of a mounting portion of the door body 1 to the door frame body 1A, and right and left sides thereof. An example of a mounting portion of the elastic urging mechanism C that is bent at a right angle along one end of the pair of side plate portions 5B and 5C and the bottom plate portion 5A disposed near the vertical center position of the door body 1. The mounting plate portion 5D has a certain mounting hole 15 and the inner side surface 5a of the mounting plate portion 5D is abutted against the end surfaces of both side plate portions 5B and 5C.

  Further, on one side plate portion 5B of the second mounting member 5, pivot connecting portions 6B, 7B on the distal end side of the pair of swing links 6, 7 are provided with third, fourth connecting pins 16, The other side plate portion 5C is pivotally connected so as to be rotatable around the pin axis of the pin 17, and the height of the other side plate portion 5B is lower than the height of the one side plate portion 5B. The heights of the outer peripheral surfaces of the third and fourth connecting pins 16 and 17 are lower than the lowermost positions so that the detaching operations 16 and 17 can be easily performed from the horizontal direction.

  As shown in FIGS. 9 and 10, there are pivotal connecting portions 6B and 7B on the front end side of the short side swing links 6 and 7 and a long portion at the upper and lower portions of one side plate portion 5B of the second mounting member 5. For pivotally connecting the pivot-supporting connecting portions 6B, 7B on the distal ends of the scale-side swing links 6, 7 so as to be pivotable around the pin axis of the third and fourth connecting pins 16, 17 along the horizontal direction. Mounting holes 5a, 5b, and 5c, which are examples of three mounting portions, are formed so as to penetrate one of the mounting holes 5a.

  As shown in FIGS. 6 and 10, the pivot support connecting portion 6 </ b> B on the distal end side of the short-side first swing link 6 is a door among the mounting holes 5 a, 5 b, 5 c of the second mounting member 4. At the time of closing, the pivot connection portion 7B on the distal end side of the short side second swing link 7 is pivotally attached to the common first attachment hole 5a disposed at a position closer to one end in the vertical direction of the opening. The member 4 is pivotally attached to a second mounting hole 4b disposed at an upper and lower intermediate position of a hole forming region of the member 4.

  As shown in FIG. 3 and FIG. 9, the pivot connecting portion 6 </ b> B on the distal end side of the long first swing link 6 is a door closing member among the mounting holes 5 a, 5 b, 5 c of the second mounting member 5. At this time, it is pivotally attached to a common first mounting hole 5a disposed at a position closer to one end side in the vertical direction of the opening, and the pivot connecting portion 7B on the distal end side of the long second swing link 7 The mounting member 5 is pivotally attached to a third mounting hole 5c disposed at a position near the vertical center.

  Of the second swing link 7 of the link mechanism B, the proximal end side link portion 7a that is offset toward the pivot connection portion 7A that is pivotally connected to the first attachment member 4 is, for example, as shown in FIGS. As shown, an L-shape that can bypass the front end of the top plate 8 or the bottom plate 9 so as not to interfere with the front end of the top plate 8 or the bottom plate 9 of the door mounting frame A when switched to the open position. The central link portion 6a of the first swing link 6 is also bent and formed in a substantially L shape so as not to interfere with the proximal end link portion 7a of the second swing link 7. Yes.

  As shown in FIGS. 9 and 10, an L-shaped bearing piece 6C is bent from the tip of the pivot connecting portion 6B on the distal end side of the first swing link 6, and this bearing piece 6C and With a peripheral portion of the pivot coupling portion 6B, it is configured as a pin receiving portion for constructing a locking pin 20 for detachably hooking a locking hook 10a formed at the other end of the tension coil spring 10. The pin receiving portion includes a portion that is closer to one end side of the second mounting member 5 than the pivot shaft of the pivot connection portion 6B on the distal end side and the pivot support on the distal end side when the door body 1 is in the closed position. The locking hook 10a formed on the other end portion of the tension coil spring 10 can be selectively hooked to a portion farther from the one end side of the second mounting member 5 than the pivot axis of the connecting portion 6B. In addition, the lock pin 20 can be selectively attached. First and second pin holes 21 and 22 are formed, which is an example of only part.

  Then, the tension coil spring 10 is stretched between the attachment plate portion 5D on one end side of the second attachment member and the pin receiving portion of the first swing link 6 pivotally connected to the other end side thereof. 9 and 10, the locking pin 20 that hooks the locking hook 10 a on the other end side of the tension coil spring 10 is connected to the pivot of the distal end side pivot connecting portion 6 </ b> B of the first swing link 6. When attached to the first pin hole 21 at a position closer to the attachment plate portion 5D side of the second attachment member 5 than the support shaft core, the extension distance of the tension coil spring 10 when the door is closed is shortened. As shown in FIG. 10, the locking pin 20 that hooks the locking hook 10 a of the tension coil spring 10 is connected to the second mounting member 5 rather than the pivot axis of the distal-end pivot coupling portion 6 </ b> B of the first swing link 6. Attach to the second pin hole 22 at a position away from the mounting plate portion 5D side And, it stretched the distance of the coil spring 10 tension at the time of door closed longer.

  Therefore, in the door body opening / closing device of the type in which the door body 1 is opened and swung downward, the locking pin 20 for hooking the locking hook 10a of the tension coil spring 10 is provided on the mounting plate portion 5D side of the second mounting member 5. The door body opening / closing device of the type that can prevent the door body 1 from opening suddenly and swinging and opening the door body 1 upward and swinging is attached to the first pin hole 21 at a portion approaching Then, the weight of the door body 1 is increased by attaching the locking pin 20 for hooking the locking hook 10a of the tension coil spring 10 to the second pin hole 22 at a position away from the mounting plate portion 5D side of the second mounting member 5. It can be opened and swung smoothly with a small operating force.

  In addition, when the door is closed and when the door is opened, the locking pin 20 that holds the locking hook 10a of the tension coil spring 10 is attached to the mounting plate portion of the second mounting member 5 in both the upper opening type and the lower opening type. The tension coil spring 10 is located at a position beyond or near the line segment connecting the 5D screw shaft mounting center position and the pivot axis of the first pivot link 6B of the first swing link 6. The door body 1 is urged and held in the closed position or the open position by the elastic restoring force.

  Accordingly, the first formed at two locations on the side of the pivot coupling portion 6B of the first swing link 6 in a state where the tension distance of the tension coil spring 10 between the second mounting member 5 and the mounting plate portion 5D is different. A door opening / closing device of a lower opening type and a door of an upper opening type simply by selectively replacing the locking pin 20 for hooking the locking hook 10a of the tension coil spring 10 with respect to the second pin holes 21 and 22. A body opening and closing device can be manufactured.

  As shown in FIGS. 9 to 11, the urging force adjusting operation means D is provided with a screw member 24 screwed and fixed to one end portion of the tension coil spring 10 from the coil axis direction, and mounting of the second mounting member 5. The operation screw shaft 25 is screwed into the screw member 24 through an attachment hole 15 formed in the plate portion 5D.

  As shown in FIG. 12 and FIG. 13, the opening position adjusting means E is configured in a portion on the opening position side of the first mounting member 4 that is located within the swing range of the first swing link 6. A synthetic resin rectangular stopper member 26 provided with a plurality of stopper surfaces 26a having different distances from the pivot axis rotates around the axis of the pivot pin 27 and a certain range in the direction of the pivot axis. The stopper surface 26a of the stopper member 26 is selectively engaged and held at the sputter acting position on the sliding guide surface of the first mounting member 4 which is pivotally mounted within the stopper member 26 and faces the bottom surface of the stopper member 26. As shown, a plurality of (four in this embodiment) engagement recesses 26b formed in the bottom surface of the stopper member 26, more specifically, grooves formed by cutting in a cross shape on the bottom surface of the stopper member 26. Engagement recess 26 Locking projection 4e which selectively engaging is embossed formed against.

  Further, a state in which the engagement recess 26b of the stopper member 26 with respect to the engagement protrusion 4e is allowed to turn over between the head portion 27a of the pivot pin 27 and the one end surface of the stopper member 26 opposite to the head portion 27a. A spring washer 28, which is an example of an elastic biasing body that moves and biases the stopper member 26 toward the first mounting member 4 side, is provided.

  As shown in FIGS. 9 and 10, the first attachment member 4 includes a short-side first swing link 6 between a common first attachment hole 4 a and a second attachment hole 4 b positioned close thereto. The first insertion hole 29 for the pivot pin 27, which is an example of the first mounting portion of the stopper member 26 that regulates the opening position of the door body 1 by contact with the two, and both mountings other than the common first mounting hole 4a Between the holes 4b and 4c, the second for the pivot pin 27, which is an example of the second mounting portion of the stopper member 26 that regulates the opening position of the door body 1 by contact with the long first swinging link 6. An insertion hole 30 is formed.

  The first mounting member 4 has a first insertion hole for mounting the stopper member 26 at a position where the opening position of the door body 1 is regulated by contact with the short-side first swing link 6 as described above. 29 and the second insertion hole 30 for attaching the stopper member 26 to the position that regulates the opening position of the door body 1 by contact with the long first swing link 6. Only one type of mounting member 4 needs to be manufactured, and a reduction in manufacturing cost can be promoted.

  Moreover, as shown in FIGS. 1-10, among the two rocking links 6, 7 of the link mechanism B pivotally connected to the respective second mounting members 5 mounted on the left and right vertical rods 1a of the door frame 1A. In the lower opening type door body opening / closing device, the pair of left and right first swing links 6 corresponding to the lower rod 1b of the door frame body 1A in the state where the door body 1 is in the closed position, or the upper opening type. In the door body opening / closing apparatus, the aluminum body is formed in a hollow cylindrical shape between the bearing pieces 6C of the pair of left and right first swing links 6 corresponding to the upper collar 1c of the door frame body 1A with the door body 1 in the closed position. The rigid connecting member 31 extruded from an alloy is a screw 32 in a horizontal posture in which the door body 1 is positioned along the back surface of the lower collar 1b or the upper collar 1c of the door frame 1A when the door body 1 is in the closed position. Tightened and fixed with.

  In the figure, reference numeral 6b denotes a pivot connection hole into which the first connection pin 12 penetratingly formed in the proximal-side pivot connection part 6A of the first swing link 6 is inserted, and 6c is the first swing link. 6 is a pivot connection hole into which a third connection pin 16 penetratingly formed in the front end side pivot connection portion 6B of the No. 6 is inserted.

  In the drawing, 7 b is a pivot connection hole into which the second connection pin 13 formed through the base end side pivot connection portion 7 A of the second swing link 7 is inserted, and 7 c is the second swing link 7. This is a pivot connection hole into which the fourth connection pin 17 penetratingly formed in the distal end side pivot connection portion 7B is inserted.

  In the figure, reference numeral 33 denotes a latching cylinder that is externally fitted to the latching pin 20 so as to be relatively rotatable. The latching hook 10a of the tension coil spring 10 is detachably latched at a central position in the cylinder axis direction. A retaining groove 33a is formed.

  In the figure, reference numeral 34 denotes a cover fixed to the first mounting member 4 with screws 35 so as to cover the outer side of the first mounting member 4.

[Other Embodiments]
(1) In the above-described embodiment, an upper opening type door body opening / closing device that moves the door body 1 to the outer side on the upper side of the opening portion during the door opening operation, and the door body 1 of the opening portion during the door opening operation. The lower opening type door body opening / closing device that moves down to the outer side on the lower side has been described. Among the structural members of the door mounting frame A that forms the storage chamber S, the ceiling members that oppose each other in the vertical direction of the storage chamber S. A metal rectangular flat plate-like first mounting member 4 fixed to each of the plate and the bottom plate, and a metal second mounting member 5 fixed to the back surface of the door body 1 along the horizontal direction, A metal link mechanism B that swings and guides the door body 1 in a parallel or substantially parallel posture between a closed position for closing the opening of S and an open position moved to the lateral side of the opening in the left-right direction. And the door 1 is closed as the link mechanism B swings. Position and in the open position the resilient biasing mechanism for alternatively holding may be carried out provided between the second attachment member 5 and the link mechanism B. In short, the door body 1 may be configured in a laterally open form in which the door body 1 is laterally moved to the right or left side of the opening during the door opening operation.
(2) The biasing force adjusting operation means D may be configured in any structure as long as the elastic biasing force by the biasing mechanism C can be adjusted.
(3) As the opening position adjusting means E, any opening position adjusting means E can be used as long as the opening position of the door body 1 can be changed to a plurality by contact with the first swing link 6 or the second swing link 7. It may be configured in a structure.

Sectional side view at the time of closing the door of the long form which shows 1st Embodiment of the door opening and closing apparatus by this invention II-II sectional view of FIG. Long sectional cross-sectional side view when the lower door 1 is opened to the upper outer side Long side cross-sectional side view when the upper door body 1 is opened to the outside on the lower side Cross-sectional side view when short door is closed Cross-sectional side view of short form when the lower door body 1 is opened to the outside on the upper side Sectional side view of short form when the upper door body 1 is opened to the outer side on the lower side The perspective view which looked at the door opening and closing device from the lower side in the storage room Disassembled perspective view of long door opening / closing device Exploded perspective view of a short-sized door opening / closing device Enlarged sectional view of urging force adjusting operation means Enlarged side view of opening position adjustment means Enlarged sectional view of the opening position adjustment means

Explanation of symbols

B Link mechanism C Elastic biasing mechanism S Storage chamber 1 Door 1A Door frame 1B Translucent body (transparent plate glass)
1a Longitudinal rod 1b Lower rod 1c Upper rod 4 First mounting member 4a Mounting portion (first mounting hole)
4b Mounting part (second mounting hole)
4c Mounting part (third mounting hole)
5 Second mounting member 5A Bottom plate portion 5B Side plate portion 5C Side plate portion 5D Mounting plate portion 5a Mounting portion (first mounting hole)
5b Mounting part (second mounting hole)
5c Mounting part (third mounting hole)
5d Inner side surface 6 First swing link 6A Pivot connection portion 6B Pivot connection portion 7 Second swing link 7A Pivot connection portion 7B Pivot connection portion 10 Coil spring (tensile coil spring)
15 Mounting part (Mounting hole)
21 Mounting part (first pin hole)
22 Mounting part (second pin hole)
29 First mounting portion (first insertion hole)
30 Second mounting portion (second insertion hole)
31 Connecting member

Claims (8)

The first attachment member attached to the inner wall of the storage chamber and the second attachment member attached to the back surface of the door body that closes the opening of the storage chamber move the door body to the closed position and to the outside of the opening. An elastic biasing mechanism that is connected via a link mechanism that swings and guides the position of the door body, and that alternatively holds the door body in a closed position and an open position as the link mechanism swings. A door opening and closing device provided,
The door body opening / closing device in which the elastic biasing mechanism is provided between the second attachment member and the link mechanism.   The link mechanism includes a pair of swing links that swing and guide the door body to a closed position and an open position while maintaining the door body in a parallel or substantially parallel posture, and a coil spring provided in the elastic biasing mechanism includes 2. The door according to claim 1, wherein the door is provided between the pivot connecting portion side of one first swing link pivotally connected to the other end side of the second mounting member and one end side of the second mounting member. Body opening and closing device.   Of the first swing link, in a state where the door body is in the closed position, the portion closer to the one end side of the second mounting member than the pivot connection portion with the second mounting member is moved away from the one end side of the second mounting member. The door opening and closing device according to claim 2, wherein an attachment portion to which the other end portion of the coil spring of the elastic biasing mechanism can be selectively attached is formed on the portion.   The second attachment member is provided with a bottom plate portion provided with an attachment portion to the door body and a pair of side plate portions bent on both sides thereof, and one side plate portion includes a pair of side plates constituting a link mechanism. 4. The door body opening and closing device according to claim 1, wherein the swing link is pivotally connected, and the height of the other side plate is lower than the height of the one side plate.   The second mounting member includes a bottom plate portion having a mounting portion to the door body, a pair of side plate portions bent at both sides of the bottom plate portion, and an elastic biasing mechanism bent at one end side of the bottom plate portion. The door body opening / closing apparatus according to any one of claims 1 to 4, wherein an attachment plate portion having a plurality of attachment portions is provided, and an inner side surface of the attachment plate portion is abutted against end faces of both side plate portions.   The first mounting member is formed with three mounting portions for selectively pivotally connecting two types of both oscillating links having different lengths constituting the link mechanism in a state where one of them is shared. In addition, the second mounting member is formed with three mounting portions for selectively pivotally connecting two types of both oscillating links having different lengths in a state where one of them is shared. The door body opening / closing device according to any one of claims 1 to 5.   The first mounting member restricts the opening position of the door body by contact with the short-side swing link between the common mounting portion and the mounting portion for the short-side swing link positioned in the vicinity thereof. Between the first attachment portion of the stopper member and both attachment portions other than the common attachment portion, a second attachment portion of the stopper member that restricts the opening position of the door body by contact with the long-side swing link is formed. The door opening and closing device according to claim 6. The door body is constructed by mounting a translucent body on an annular door frame body, and swinging of a link mechanism pivotally connected to each second mounting member attached to the left and right vertical shafts of the door frame body Among the moving links, the door body is in the closed position across the pivot connecting portion side of the first swing link corresponding to the lower or upper arm of the door frame body in a state where the door body is in the closed position. The door body opening and closing device according to any one of claims 1 to 7, wherein a connecting member is sometimes erected in a state of being positioned along the lower surface of the door frame or the back surface of the upper frame.

Images