JP2017180977A - Door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce inclination of several doors supported at an upper part and a lower part of one supporting member through hinge mechanism while keeping their opened or closed state in superior manner.SOLUTION: A hinge plate 40 [supporting member] at a door device 10 supports a lower edge of a first door 31 arranged at an upper part of the hinge plate 40 and an upper edge of a second door 32 arranged at a lower part together. The lower edge of the first door 31 fits an upward facing hinge pin 51 vertically arranged at an upper surface of the hinge plate 40 into a first bearing hole 61 arranged at the lower edge and the upper edge of the second door 32 fits a downward facing hinge pin 52 protruded at the lower surface of the hinge plate 40 into a second bearing hole 62 arranged at the upper edge, respectively, while keeping a clearance there and they are rotatably supported around a rotating shaft arranged along a base end edge 39 [vertical edge] of each door. In this case, an axis center [supporting axis Z1] of the downward facing hinge pin 52 is shifted to the base end edge 39 side in respect to an axis center [supporting axis Z1] of the upward facing hinge pin 51 only by a prescribed shift amount D at the hinge plate 40.SELECTED DRAWING: Figure 4

Description

  The technique disclosed by this specification is related with the door apparatus attached to the opening formed in the housing | casing.

  Conventionally, storages in which a plurality of doors are arranged side by side are widely used. For example, in the storage described in Patent Document 1 below, a total of four openings (entrances) that are partitioned vertically and horizontally are formed on the front surface of the casing that forms the storage body, and a total of four doors, one for each opening. However, it is attached in a double-spread type around the vertical axis. Each door is connected via a so-called hinge mechanism in which a hinge pin provided on a support member (support plate) fixed to the opening edge of the housing is fitted in a bearing hole provided on the upper edge or lower edge of the door. Supported. The upper edge of the upper door and the lower edge of the lower door are supported by the corresponding support members, respectively, but the lower edge of the upper door and the upper edge of the lower door are supported together by one support member. ing. Specifically, in one support member fixed to the housing so as to be arranged below the upper door and above the lower door, a bearing hole provided with a hinge pin standing upward on the lower edge of the upper door In addition, the two doors are rotatably supported above and below the support member by fitting downwardly protruding hinge pins into bearing holes provided on the upper edge of the lower door.

JP-A-11-257837

  By the way, in the hinge mechanism, a clearance is set between the hinge pin and the bearing hole for the purpose of smooth rotation of the door. For this reason, the vertical edge on the opposite side to the hinge mechanism may be lowered due to the weight of the door, and the door may be inclined. Such a tilt of the door causes various problems even if it is small. For example, in a refrigerator in which a magnet and a seal member are attached to the opposite edges of the left and right doors installed in a double-speech manner, and the seal between the left and right doors is realized by the magnetic force of the magnet and the elasticity of the seal member, the door In the lower part, the gap between the left and right doors is widened, so the magnetic force of the magnet is insufficient and a gap is created, which may lead to cold air leakage and frost in the cabinet. On the other hand, at the upper part of the door, the distance between the left and right doors becomes too narrow and the seal members interfere with each other so that they can not close, or the door on the other side opens together by opening one of the doors from the closed state. May be frustrated.

  As a countermeasure when the door is tilted, it is conceivable to adjust the tilt of the door by changing the fixing position of the support member that supports the tilted door. However, as described above, when two doors are supported up and down by one support member, for example, if the fixing position of the support member is changed so as to eliminate the inclination of the lower door, the upper door is supported. Since the state also changes, it is difficult to adjust the inclination of the door by changing the fixing position of the support member. If the fixing position of the support member that supports the upper edge of the upper door and the lower edge of the lower door is changed without changing the position of the support member, the upper door and the lower door are displaced in the left-right direction. Therefore, there is a possibility that the open / closed state cannot be maintained well.

  The technology disclosed in the present specification has been completed based on the above-described circumstances, and the door open / closed state is favorably maintained for a plurality of doors supported above and below one support member via a hinge mechanism. The purpose is to reduce the tilt.

  A door device disclosed in the present specification includes a first door and a second door disposed below the first door, a plurality of doors for opening and closing an opening formed in the housing, and the first door A support member fixed to the housing so as to be disposed below the second door and above the second door, and supporting a lower edge of the first door and an upper edge of the second door, The lower edge of one door and the upper edge of the second door are fitted with a hinge pin provided in one of the door and the support member with a clearance in a bearing hole provided in the other. Thus, the first door or the second door is supported so as to be rotatable around a rotation axis arranged along the vertical edge of the second door, and is provided on the support member to support the upper edge of the second door. The hinge pin or the shaft center of the bearing hole is provided on the support member and serves as a lower edge of the first door. With respect to the axis of the hinge pin or the bearing bore for lifting, it is provided to shift to the longitudinal edge.

  According to the above configuration, the axis of the hinge pin or the bearing hole that supports the upper edge of the second door, that is, the support shaft of the upper edge of the second door is vertically By providing a shift to the edge side, the inclination of the second door can be reduced. At this time, unlike changing the fixing position of the support member, the support shaft of the lower edge of the first door (the hinge pin supporting the lower edge of the first door or the axis of the bearing hole) can be maintained at the normal position. The tilt of the second door can be reduced without affecting the support state of the first door. As a result, it is possible to reliably close the opening and to prevent a situation in which the opening and closing of the door is hindered. Compared with the door device of the conventional configuration, the door device of the above configuration can be configured only by changing the position of the hinge pin or the bearing hole provided in the support member, increasing the number of component parts and the manufacturing process, and increasing the cost. There is no invitation.

  In the door device disclosed in this specification, the first door is provided on the support member of the hinge pin or the shaft center of the bearing hole provided on the support member and supporting the upper edge of the second door. A shift amount with respect to the axial center of the hinge pin or the bearing hole that supports the lower edge of the bearing may be set based on the clearance.

  As in the above configuration, the shift amount of the support shaft of the upper edge of the second door relative to the support shaft of the lower edge of the first door can be calculated from the design value of each related member or set based on the measured clearance. it can. If it does in this way, the above-mentioned effect can be acquired by shifting the support shaft of the upper edge of the second door by an appropriate amount.

  According to the technique disclosed by this specification, about the some door supported through the hinge mechanism on the upper and lower sides of one support member, inclination can be reduced, maintaining the door open / closed state favorable.

External appearance perspective view which shows one Embodiment of the storage provided with the door apparatus which concerns on one Embodiment An enlarged exploded perspective view showing a hinge plate mounting portion Exploded perspective view showing the support structure of the lower edge of the first door and the upper edge of the second door by the hinge plate Front view of hinge plate with hinge pin attached Side view of hinge plate with hinge pin attached Top view of hinge plate with hinge pin attached Sectional drawing which showed the support state of the 1st door and the 2nd door typically Sectional drawing which showed the support state of the 1st door and the 2nd door in the conventional door apparatus typically

  Hereinafter, an embodiment of a storage provided with a door device according to the present invention will be described with reference to FIGS. 1 to 6. In the following description, the front left side in FIG. 1 is the front (front), the right front side is the right, and the upper side is the top. Moreover, about a some same member, a code | symbol is attached | subjected to only one member, and it may abbreviate | omit about another member.

  As shown in FIG. 1, the storage S1 provided with the door device 10 of the present embodiment is a four-door refrigerator, and a housing 1 made of a heat insulating box is supported by legs 11 provided at four corners of the bottom surface. The interior is a storage chamber 12. A cross-shaped partition frame 13 is attached to the opening formed on the front surface of the housing 1, so that a total of four openings 2 are formed vertically and horizontally, and a door 3 is attached to each opening 2. .

  A machine room 14 is provided on the upper surface of the refrigerator body, and a refrigeration unit (not shown) including a compressor, a condenser, and the like is installed inside the machine room 14. This refrigeration unit is connected to a cooler (not shown) disposed on the ceiling of the storage chamber 12 and the like by a refrigerant pipe to constitute a known refrigeration cycle. With the control operation of the refrigeration unit, the interior of the storage chamber 12 is maintained at a substantially constant cooling temperature, and stored items are taken into and out of the storage chamber 12 through the opening 2 while opening and closing the door 3.

  As shown in FIG. 1, out of a total of four doors 3, a door attached to the upper opening 2 is a first door 31, and a door attached to the lower opening 2 is a second door 32. Hereinafter, the four doors are collectively referred to as the door 3 when collectively referred to, and the first door 31 or the second door 32 is referred to when the upper and lower doors are distinguished. In the present embodiment, each of the two first doors 31 and second doors 32 is attached in a double-spread type, and the first door 31 and the second door whose rotation axis is arranged along the right vertical edge of the door. Since the door 32 and the first door 31 and the second door 32 whose rotation shafts are arranged along the left vertical edge of the door are supported by a similar structure reversed left and right, in the following, mainly the right vertical The first door 31 and the second door 32 on the right side provided with the rotation shaft along the edge will be described.

  As shown in FIG. 1, in the door device 10, the door 3 is attached to the housing 1 by supporting the upper edge and / or the lower edge of the door 3 via a hinge mechanism. Hereinafter, the hinge mechanism that supports the upper edge of the first door 31 is the hinge mechanism 4A, and the hinge mechanism that supports the upper edge of the first door 31 and the lower edge of the second door 32 together is the hinge mechanism 4B and the lower edge of the second door 32. A hinge mechanism that supports the hinge is referred to as a hinge mechanism 4C. In each of the hinge mechanisms 4A, 4B, and 4C, the door 3 has a hinge pin (supporting member) 40 disposed along the upper edge and / or the lower edge of the opening 2 so as to project the hinge pin on the door 3. By rotating freely through the bearing holes provided in the edge and / or the lower edge, the rotation is arranged along the base edge 39 (corresponding to the vertical edge in the claims) which is one vertical edge of the door 3. It is supported so as to be rotatable around the moving axis. Each of the hinge mechanisms 4A, 4B, 4C is a lift hinge mechanism.

The hinge mechanism 4B that supports the lower edge of the first door 31 and the upper edge of the second door 32 will be described with reference to FIGS.
The hinge plate 40 is made of stainless steel and has a general shape in which a support portion 42 having a horizontal plate surface is bent at a right angle at a lower edge of the mounting portion 41 having a vertical plate surface. . As shown in FIG. 4, in the hinge plate 40, one through hole 43 through which the attachment screw 15 is inserted is formed on both sides of the attachment portion 41. As shown in FIG. 2, the hinge plate 40 according to the hinge mechanism 4 </ b> B is provided between the lower edge of the upper opening 2 and the upper edge of the lower opening 2 on the front surface of the housing 1 and the base edge 39 of the door 3. By fixing the mounting screw 15 while aligning the screw hole formed at the position near the side edge where the slidable hole is disposed with the through hole 43 described above, the support portion 42 is fixed to the housing 1 so as to be horizontal. Is done.

  Two mounting holes (not shown) are opened in the support portion 42, and as shown in FIG. 2, the upward hinge pin 51 and the downward hinge pin 52 protrude from the upper surface or the lower surface of the support portion 42, respectively. To be fitted. As shown in FIG. 6, the downward hinge pin 52 is fitted to a position shifted by a predetermined shift amount D rearward and to the right (side corresponding to the base edge 39) with respect to the upward hinge pin 51. These arrangements will be described later. Further, a dead end-like insertion hole 46 for attaching a pin side collar 50 (described later) around the upper hinge pin 51 is further rearward and to the right of the attachment hole into which the downward hinge pin 52 is fitted. Is formed. The front edge of the support portion 42 has a stepped shape, and a locking portion 47 is formed at the right end, and a stopper 35 of the first door 31 (to be described later) abuts on the locking portion 47 so that the door The degree of opening is regulated.

  As shown in FIGS. 2 and 3, a pin-side collar 50 is attached around the upward hinge pin 51 fitted to the hinge plate 40. The pin-side collar 50 is a synthetic resin member, and as shown in FIG. 3, a cam surface 55 having a flat ring shape is arranged on a portion fitted around each hinge pin, and extends from the cam surface 55. The substrate portion is formed so as to have a substantially triangular shape that is gradually tapered. An insertion hole 56 through which the upward hinge pin 51 or the downward hinge pin 52 is inserted is opened at the center of the cam surface 55. Three convex portions 57 are formed on the cam surface 55, and inclined portions forming a downward slope are formed on both sides of each convex portion 57, and are continuous with the concave portions interposed therebetween.

  For example, when the pin side collar 50 is disposed around the upper hinge pin 51, the insertion hole 56 is inserted into the upper hinge pin 51, and a non-illustrated rotation protrusion formed on the lower surface of the substrate portion is inserted into the insertion hole 46. The pin-side collar 50 is attached to the upper surface of the hinge plate 40 by being fitted into the hinge plate 40.

  On the other hand, the lower edge of the first door 31 and the upper edge of the second door 32 are provided with an oval fitting hole having a major axis in the front-rear direction at a position near the base end edge 39. And as shown in FIG. 3, the hole side collar 60 is press-fitted and fixed. The hole side collar 60 is a member formed so as to have an oval shape in a plan view using a synthetic resin material, and includes two bearing holes through which the above-described upward hinge pin 51 and downward hinge pin 52 can be inserted with a slight clearance, A first bearing hole 61 and a second bearing hole 62 are formed. In the hole side collar 60, a planar ring-shaped cam surface 65 is provided around the first bearing hole 61 and the second bearing hole 62, and a convex portion 67, an inclined portion, and a concave portion are repeatedly formed in the circumferential direction. In the hole side collar 60 attached to the lower edge of the first door 31, the upper hinge pin 51 is fitted in the first bearing hole 61 on the front side, and in the hole side collar 60 attached to the upper edge of the second door 32, The lower hinge pin 52 is fitted in the second bearing hole 62 on the side, and each cam surface 65 comes into contact with the cam surface 55 of the pin-side collar 50 attached around the upper hinge pin 51 or the lower hinge pin 52. In the state, the first door 31 and the second door 32 are supported. Each cam surface is set so that the convex portion 57 of the cam surface 55 and the concave portion of the cam surface 65 mesh with each other in a state where the first door 31 and the second door 32 are closed. Further, as shown in FIG. 2, a stopper 35 is attached to the lower edge of the first door 31 along the front edge, and when the first door 31 is opened to a predetermined opening, The stopper 35 abuts on the formed locking portion 47 so that the opening of the first door 31 is restricted.

In such a lift hinge mechanism, the hole-side collar 60 rotates relative to the pin-side collar 50 so that the door 3 is opened and closed while being raised and lowered.
For example, when the first door 31 is opened from the closed state, the cam surface 65 of the hole side collar 60 attached to the lower edge of the first door 31 is the cam surface of the pin side collar 50 attached to the upper surface of the hinge plate 40. Rotate on 55. Thereby, from the state in which the convex portions and the concave portions of both cam surfaces are engaged with each other, the upper convex portion 67 moves and rides on the convex portion 57 along the adjacent inclined portion from the lower concave portion. The door 31 is opened while rising. On the other hand, when the opened first door 31 is closed, the cam surface 65 of the hole side collar 60 rotates on the cam surface 55 of the pin side collar 50 in the direction opposite to that when the door is opened. As a result, from the state where the convex portions of both cam surfaces are engaged and opened at the raised position, the upper convex portion 67 moves to the concave portion along the adjacent inclined portion from the lower convex portion 57. The first door 31 slides down along the cam surface 55 and is closed.
When the first door 31 is further rotated in the opening direction from the state where the convex portions of both cam surfaces are engaged and opened at the raised position, the upper convex portion 67 is recessed along the inclined portion. And can be maintained in an open state at a predetermined angle.

  In the door device 10 of this embodiment, the hinge plate 40 similar to that related to the hinge mechanism 4B can be used in the hinge mechanism 4A and the hinge mechanism 4C. For example, in the hinge mechanism 4A, only the downward hinge pin 52 is fitted to the hinge plate 40 fixed along the upper edge of the opening 2 at the upper stage of the housing 1, and the hole side collar 60 is press-fitted and fixed to the upper edge of the first door 31. The downward hinge pin 52 is inserted through the second bearing hole 62. Further, in the hinge mechanism 4C, only the upper hinge pin 51 is fitted to the hinge plate 40 fixed along the lower edge of the opening 2 at the lower stage of the housing 1, and the pin side collar 50 is attached to the periphery thereof, while the second The hole side collar 60 is press-fitted and fixed to the lower edge of the door 32, and the upward hinge pin 51 is inserted into the first bearing hole 61. The hinge plate 40 according to the hinge mechanism 4C is formed symmetrically with respect to the hinge mechanisms 4A and 4B, and the casing is arranged in a posture in which the support portion 42 is arranged on the upper edge of the attachment portion 41. 1 can be used.

  The door device 10 according to the present embodiment is configured to be an auto-close system. In the hinge plate 40, as shown in FIG. 5 and FIG. 6 and the like, the axis (support axis Z1) of the upward hinge pin 51 is disposed forward of the axis (support axis Z2) of the downward hinge pin 52. Therefore, in the door device 10, in the door 3, the axis of the hinge pin supporting the upper edge and the axis of the hinge pin supporting the lower edge are shifted from each other in the front-rear direction. For example, in the first door 31, the axis (support shaft) of the upper hinge pin 51 of the hinge mechanism 4B that supports the lower edge rather than the axis (support axis Z2) of the lower hinge pin 52 of the hinge mechanism 4A that supports the upper edge. Z1) is arranged forward. Thereby, as represented by the one-dot chain line in FIG. 1, the rotation axis of the first door 31 is inclined in the front-rear direction, and the first door 31 is an angle corresponding to the inclination angle of the rotation axis in the opened state. Therefore, it is biased in the closing direction by the action of rotational force resulting from the tilt angle. As a result, the door can be easily and reliably closed. The same applies to the second door 32.

  Next, a mechanism for reducing the inclination of the door 3 will be described by comparing FIG. 7 and FIG. 7 is a diagram schematically illustrating the door device 10 according to the present embodiment, and FIG. 8 is a diagram schematically illustrating a conventional door device 110. In the door device 110, the hinge mechanism 104A supports the hinge mechanism that supports the upper edge of the first door 31, the hinge mechanism 104B supports the hinge mechanism that supports the upper edge of the first door 31 and the lower edge of the second door 32, and the second door 32. The hinge mechanism that supports the lower edge is referred to as a hinge mechanism 104C. In the door device 110, the arrangement of the upward hinge pins 51 and the downward hinge pins 52 in the hinge plate 140 is different from the arrangement in the hinge plate 40 according to the present embodiment. Hereinafter, in the door apparatus 110, about the member similar to the door apparatus 10, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the door device 10 and the door device 110 having the hinge mechanism, the door 3 can be smoothly rotated between the upper hinge pin 51 and the first bearing hole 61 and between the lower hinge pin 52 and the second bearing hole 62. Clearance is set for each purpose. For example, the diameter of each hinge pin shaft is designed to be 10 mm or less, and the diameter of each bearing hole is designed to be 10.2 mm or more.

In the hinge plate 140 according to the conventional door device 110, the axial centers of the upper hinge pin 51 and the lower hinge pin 52 are set so as to be coaxially overlapped in the left-right direction, and as shown in FIG. Then, all the axial centers of the upward hinge pin 51 and the downward hinge pin 52 related to the hinge mechanisms 104A, 104B, and 104C are configured to overlap on the same axis (support axis Z1) in the left-right direction. In such a door device 110, for example, as shown for the second door 32 in FIG. 8, the left vertical edge (vertical edge opposite to the base end edge 39) side is lowered by the weight of the second door 32 or the like. When a force is applied, such a movement is allowed by the clearance between the downward hinge pin 52 and the second bearing hole 62, and the second door 32 may be inclined.
In such a case, when the hinge plate 140 related to the hinge mechanism 104B is moved to the right in order to reduce the inclination of the second door 32, the upward hinge pin 51 erected from the hinge plate 140 is also moved to the right. Move to. If it does in this way, the support state of the 1st door 31 changes and there exists a possibility that the inclination of the 1st door 31 may be promoted. On the other hand, when the hinge plate 140 related to the hinge mechanism 104A is moved to the right while the hinge plate 140 related to the hinge mechanism 104C is moved to the right while maintaining the fixed position of the hinge plate 140 related to the hinge mechanism 104B, The entire door 1 is arranged to the right of the original position, and the entire second door 32 is arranged to the left, so that they do not line up and down, making it impossible to close the opening 2 properly. There is a risk of hindering the opening and closing operation.

  On the other hand, in the hinge plate 40 according to the door device 10 of the present embodiment, the axial center of the downward hinge pin 52 shifts toward the proximal edge 39 in the left-right direction with respect to the axial center of the upward hinge pin 51. Is set to As shown in FIG. 7, in the door device 10, the shaft center (support shaft Z <b> 2) of the downward hinge pin 52 inserted through the second bearing hole 62 provided on the upper edges of the first door 31 and the second door 32. The right side (base edge 39 side) of the axial center (support shaft Z1) of the upward hinge pin 51 inserted through the first bearing hole 61 provided at the lower edge of the first door 31 and the second door 32. It is set as the structure provided by shifting to. In such a door device 10, for example, even when a force to lower the left vertical edge side of the second door 32 is applied, the downward hinge pin 52 of the hinge mechanism 104 </ b> B is attached to the upper edge of the second door 32. By abutting the edge of the provided second bearing hole 62 on the base end edge 39 side, the inclination of the second door 32 is regulated.

  Here, the shift amount D of the support shaft Z2 with respect to the support shaft Z1, that is, the shift amount D with respect to the upper hinge pin 51 axial center of the downward hinge pin 52 in the hinge plate 40 is set between each hinge pin and each bearing hole. It can be set according to the clearance to be done. For example, as described above, when the shaft diameter of the hinge pin is 10 mm or less and the bearing hole diameter is 10.2 mm or more, the shift amount D can be set to 0.13 mm. If it does in this way, in the 1st door 31 and the 2nd door 32, the downward hinge pin 52 which supports an upper edge is fitted in the state near the edge part by the side of the base end edge 39 of the 2nd bearing hole 62, The inclination of each door 3 is effectively reduced.

According to this embodiment, the following effects can be obtained.
In the present embodiment, in the hinge plate 40, the axis (support shaft Z2) of the downward hinge pin 52 that supports the upper edge of the second door 32 positioned below the base is provided in advance with the rotation shaft close thereto. By providing the shift to the end edge 39 side, the inclination of the second door 32 can be reduced. At this time, unlike changing the fixing position of the hinge plate 40, the support shaft Z <b> 1 that supports the lower edge of the first door 31 is maintained at the normal position, so that the support state of the first door 31 is affected. The inclination of the second door 32 can be reduced without giving. As a result, it is possible to reliably close the opening 2 and to prevent the door 3 from being hindered. The door device 10 having the above-described configuration can be configured without increasing the number of components and the manufacturing process as compared with the door device 110 having a conventional configuration, so that the cost is not increased. Moreover, in the door apparatus 10 which concerns on this embodiment, the hinge mechanism 40A, 4B, 4C can use the hinge plate 40 of the fundamentally same structure except having comprised left-right symmetry. In addition, if two types of left and right symmetrical hinge plates 40 are used, it is possible to support all the doors 3 arranged on both the left and right sides of the double door opening type.

  In the door device 10 according to the present embodiment, the shaft correction amount, that is, the shift amount D of the support shaft Z2 with respect to the support shaft Z1, is calculated from the shaft diameter of the downward hinge pin 52 and the hole diameter of the second bearing hole, or both The clearance between them can be measured and set. In this way, the support shaft Z2 can be shifted by an appropriate amount, and the above-described effects can be obtained while ensuring a favorable opening / closing operation of the second door 32.

<Other embodiments>
The technology disclosed in the present specification is not limited to the embodiment described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope.

(1) In the above-described embodiment, the hinge plate 40 having the same structure is used for the hinge mechanisms 4A, 4B, and 4C in the door device 10. However, the present invention is not limited to this, and the hinge mechanisms 4A and 4C have a conventional structure. A hinge plate of the structure may be used.

(2) The door device 10 disclosed in the present specification is not limited to one provided with a lift hinge mechanism. In addition, in the thing of the structure by which a bearing hole is provided in resin-made members like the hole side collar 60, since the door 3 becomes easy to incline by abrasion etc., this technique can be applied especially usefully.

(3) The door device 10 disclosed in this specification is not limited to a four-door type or a double door type. For example, the storage S1 in which two upper and lower doors swing open and close in a single-opening manner can be preferably used. Moreover, the door apparatus 10 is applicable not only to a refrigerator but various storage S1. In a constant temperature storage such as a refrigerator, a freezer, or a heat storage, the weight of the door 3 increases in order to achieve high sealing performance and heat insulation, and the sliding portion of the hinge mechanism wears and the door 3 tends to tilt. Therefore, the present technology can be particularly usefully applied.

S1: Storage 1: Housing 2: Opening 10: Door device 31: First door 32: Second door 39: Base edge (vertical edge)
40: Hinge plate (support member)
51: Upward hinge pin 52: Downward hinge pin Z1: Support shaft (axis of the upward hinge pin)
Z2: Support shaft (downward hinge pin axis)
D: Shift amount

Claims (2)

Including a first door and a second door disposed below the first door, and a plurality of doors for opening and closing an opening formed in the housing;
A support member fixed to the housing so as to be disposed below the first door and above the second door, and supporting a top edge of the second door and a bottom edge of the first door; Prepared,
The upper edge of the second door and the lower edge of the first door are fitted with a hinge pin provided on one of the door and the support member with a clearance in a bearing hole provided on the other In this way, the first door or the second door is supported so as to be rotatable around a rotation axis arranged along the vertical edge of the second door,
The hinge pin or the bearing hole shaft provided on the support member and supporting the upper edge of the second door is provided on the support member and supports the lower edge of the first door. A door device provided to be shifted to the vertical edge side with respect to the axial center of the hole.   The hinge pin or bearing that is provided on the support member and supports the lower edge of the first door, and is provided on the support member and supports the lower edge of the first door. The door device according to claim 1, wherein the shift amount with respect to the axial center of the hole is set based on the clearance.

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