JP4092304B2 - Cooling storage - Google Patents

Description

  The present invention relates to a cold storage provided with a locking mechanism.

  Conventionally, what was described in patent document 1 is known as a cooling store | warehouse | chamber provided with the locking mechanism. As shown in FIG. 13, a heat insulating door 2 is provided at the doorway of the refrigerator body 1 so as to be openable and closable. A rotary lock 4 is provided on the exterior plate 3A of the door 2 and a lock mechanism portion 5 is provided on the interior plate 3B. Are provided on the same axis, and the rotation shaft 5B of the lock portion 5A in the lock mechanism portion 5 and the shaft portion 4A of the rotary lock 4 are connected to each other via a connecting member 6 so as to be integrally rotatable. . Then, when a key is inserted into the rotary lock 4 and rotated in one direction, the lock portion 5A is locked to the lock receiving portion 7 provided on the entrance / exit side and held in a closed state, and is rotated in the reverse direction. The lock is released and the door can be opened.

Further, the manufacturing process of this locking mechanism will be described as follows. Mounting plates 8A and 8B, which also serve as reinforcement, are attached to the back surface of the mounting position of the rotary lock 4 on the exterior plate 3A of the door 2 and the back surface of the mounting position of the lock mechanism portion 5 on the interior plate 3B, respectively. Between the mounting plates 8A and 8B, a seal pipe 9A made of foamed polystyrene is sandwiched and held. From this state, foamed urethane 9B is injected between the exterior board 3A and the interior board 3B to be foam-filled. Subsequently, the rotary lock 4 is inserted through the outer plate 3A and the mounting plate 8A and fixed by tightening the nut 4B, and the lock mechanism unit 5 is connected to the shaft 4A and the rotary shaft 5B by the connecting member 6. The inner plate 3B and the mounting plate 8B are fixed with screws.
JP 2001-311578 A

Here, in the above-mentioned conventional one, both mounting plates 8A and 8B are provided as separate parts. On the other hand, when foamed urethane 9B is foam-filled between the exterior plate 3A and the interior plate 3B in order to manufacture the door 2, the end portions of the exterior plate 3A and the interior plate 3B are particularly attached to the packing mounting holder 2A. When the structure is inserted and connected, the interior plate 3B may be displaced due to pressure during foam filling, and the shaft centers of the mounting plates 8A and 8B may be displaced accordingly. As a result, the axis of rotation 5B of the lock mechanism 5 and the axis 4A of the rotary lock 4 do not coincide with each other, which may lead to poor operation such as inability to rotate smoothly.
The present invention has been completed based on the above-described circumstances, and its purpose is to enable the rotary lock and the lock mechanism to be easily attached to the regular positions where the axes coincide with each other. is there.

  As means for achieving the above object, the invention of claim 1 is such that a heat insulating door formed by foaming and filling a heat insulating material between the exterior plate and the interior plate can be opened and closed at the entrance / exit of the storage body. In the cooling storage provided, the exterior plate of the door is attached with a rotary lock whose shaft portion is rotated in the forward and reverse directions via an inserted key, while the interior plate has the above-mentioned A lock mechanism portion having a lock portion that is rotatable between a position where the lock receiving portion provided on the entrance / exit side is locked and a position where the lock is released is attached. The rotation shaft of the lock portion and the shaft portion of the rotary lock are connected so as to be integrally rotatable, the back surface of the mounting position of the rotary lock on the exterior plate, and the lock mechanism portion of the interior plate A mounting plate is placed on the back of the mounting position. In things, characterized in was a configuration that is integrally connected the two mounting plates to each other through the connecting portion.

The invention of claim 2 is characterized in that, in the invention of claim 1, an opening is formed in the connecting portion so as to suppress heat transfer between the two mounting plates.
According to a third aspect of the present invention, in the first or second aspect of the present invention, the connecting portion includes a connection portion between the rotation shaft of the lock portion and the shaft portion of the rotary lock in the lock mechanism portion. It is characterized in that a fitting portion for fitting a pipe that forms a space to be inserted therein is provided.

<Invention of Claim 1>
Since both mounting plates are integrally connected by the connecting portion, even if subjected to foaming pressure or the like when the heat insulating material is foam-filled between the exterior plate and the interior plate, Both the mounting plate and the mounting plate are held in a state of being accurately opposed without being displaced. Therefore, it becomes possible to attach the rotary lock and the lock mechanism part to a normal position where the axial centers of the shaft part and the rotation axis of the lock part coincide with each other, and as a result, a smooth turning operation is ensured.

<Invention of Claim 2>
There is a risk that the cold inside the cabinet will be transmitted from the door interior plate to the exterior plate via the connecting part connecting both mounting plates, but the connection part is formed with an opening so that the cold heat can be transmitted. It is suppressed, and it is suppressed that the surface of a rotary lock and the surrounding exterior board is cooled, and it is prevented that dew condensation is carried out to them.
<Invention of Claim 3>
Since the pipe is fitted in the connecting portion at a fixed position between the two connecting plates, the pipe is also prevented from being displaced. Therefore, it is only necessary to secure a minimum space in the pipe for inserting the connecting portion between the rotation shaft of the lock portion and the shaft portion of the rotary lock in the lock mechanism portion, in other words, a heat insulating material is arranged. It is possible to reduce the space that is not present, and to improve the heat insulation inside and outside the door.

<Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In this embodiment, a panel refrigerator is illustrated.
In FIG. 1, reference numeral 10 denotes a main body of a panel refrigerator, which is formed in a vertically long box shape with a front opening by assembling a plurality of heat insulating panels, and is supported by legs 11 provided at four corners of the bottom surface. ing. The interior of the main body 10 is a storage chamber 12, and the front opening is an entrance / exit 13, and a heat insulating door 20 to be described in detail later can be swingably opened and closed around the right edge. It is supported. A refrigeration unit 15 is installed on the upper surface of the main body 10, and cold air generated by the refrigeration unit 15 is circulated into the storage chamber 12 to be cooled.

As shown in FIG. 2, the door 20 described above is assembled with an exterior plate 21 and an interior plate 22 made of stainless steel plates spaced apart from each other, and a heat insulating material 23 made of a foamed resin such as a urethane foam resin (see FIG. 2). 7) is foam-filled.
More specifically, as shown in FIG. 10, the exterior plate 21 is formed in a vertically long shallow dish shape, and a flange 25 bent at a right angle inward is formed at the opening edge of each side plate. The interior plate 22 is formed in a flat plate shape that is slightly smaller than the front plate of the exterior plate 21. A synthetic resin holder 26 for packing is attached to each side of the peripheral edge of the interior plate 22 by being inserted into insertion grooves 27 provided along the inner side edge. A packing 29 in which a magnet 29 </ b> A is embedded is fitted in a mounting groove 28 provided on the surface side of each holder 26. Further, the stepped portion on the back side of the holder 26 is fitted inside the protruding end of the flange 25 in the exterior plate 21.

Next, the structure of the locking mechanism will be described.
A rotary lock 30 is attached to the surface of the door 20 at a position close to the upper end on the open edge side, and a lock mechanism 40 connected to the rotary lock 30 is attached to a corresponding position on the back side. On the other hand, the lock receiving portion 17 is located at a position close to the upper end of the front edge on the left side surface of the storage chamber 12, in other words, at a position corresponding to the immediate back side of the lock mechanism portion 40 when the door 20 is closed. Projected. The lock receiving portion 17 has a round bar shape with a head portion 17 </ b> A, and protrudes vertically on the left side surface facing the right side as viewed from the front.

A mounting hole 31 having a horizontally long oval shape is formed at the mounting position of the rotary lock 30 on the exterior plate 21 constituting the door 20.
The rotary lock 30 is made of metal, and as shown in FIG. 3, a head 35 serving as an insertion portion for a key (not shown) is provided on one end side of a main body 34 having a horizontally long oval cross section. In addition, the shaft portion 36 having a slightly smaller oval cross section that is pivoted to the other end side protrudes. An external thread 34A is cut in the curved surface portion of the outer peripheral surface of the main body 34, and the nut 37 that is screwed to the shaft portion 36 is used to prevent it from coming off. Then, by inserting a key into the key hole of the head 35 and rotating it 90 degrees counterclockwise as viewed from the front, the shaft portion 36 takes a vertical posture, and from that state the key is rotated clockwise. By rotating 90 degrees in the direction, the shaft portion 36 returns to the original lateral orientation.

A through hole 41 having a large-diameter circular shape is formed at the attachment position of the lock mechanism portion 40 in the interior plate 22. Insertion holes 43 for bolts 42 are formed on both upper and lower sides of the through hole 41, the upper insertion hole 43 is relatively far from the through hole 41, and the lower insertion hole 43 is close to the through hole 41.
As shown in FIG. 4, the lock mechanism portion 40 is assembled by assembling each component made of metal, and roughly, hooks 50 (corresponding to the lock portion of the present invention) are formed on both surfaces of the base 45. And a joint 55 are arranged so as to be integrally rotatable around a horizontal axis.

Specifically, as shown in FIG. 3, the base 45 has a vertically long rectangle, and a circular shaft hole 46 is opened at a position slightly closer to the lower side than the center in the vertical direction. In the upper and lower ends of the base 45, the insertion holes 47 of the bolts 42 are formed corresponding to the insertion holes 43 of the interior plate 22.
As shown in FIG. 10, the hook 50 is formed on the upper end of the vertically long main body plate 51 so that the collar piece 52 faces sideways, and the front end portion 52A of the collar piece 52 is the left side as viewed from the front. Is bent.

  The joint 55 has a short channel shape, and an inner plate 56A is stretched on one side plate 56 to be reinforced. In the center of the two-layer side plate 56 in the width direction, a connecting hole 57 having a horizontally long oval shape is formed, in which the shaft portion 36 of the rotary lock 30 is prevented from being fitted. The other side plate 58 of the joint 55 has a pair of screw holes 59 at the same height as the connection hole 57 described above and on the left and right sides sandwiching the center in the width direction.

  In addition, a shaft plate 60 that is tightly and rotatably fitted in the shaft hole 46 of the base 45, a pair of collars 61 that form a thin disk, and a pair of flanges that form a thick disk. 62. The shaft plate 60, the collar 61, and the flange 62 are formed with insertion holes 65 for a pair of bolts 64 that are aligned with the screw holes 59 of the joint 55 at symmetrical positions with respect to the center. Yes. Also, a pair of insertion holes 65 are formed correspondingly on the base end side of the main body plate 51 of the hook 50 described above.

When assembling, for example, the shaft 45 is fitted in the shaft hole 46 in a state where the base 45 is vertically oriented, the collar 61 and the flange 62 are sequentially applied to both surfaces thereof, and the respective insertion holes 65 are formed. It is in a state of being aligned side by side. On one side (inner side) of the flange 62, the hook 50 is vertically oriented and the base end portion of the main body plate 51 is applied, so that the insertion holes 65 are aligned. On the other flange 62 (outside of the warehouse), the joint 55 is in an attitude in which the opening faces upward, and one side plate 58 is applied, and the screw hole 59 is aligned with the insertion hole 65.
The two bolts 64 are inserted from the main body plate 51 of the hook 50 into the insertion holes 65 extending from the two flanges 62, the two collars 61, and the shaft plate 60, and screwed into the screw holes 59 of the joint 55. As a result, the hook 50 and the joint 55 are integrally rotatable about the shaft center of the shaft plate 60 as described above.

Now, the bracket 70 is mounted between the back surface of the exterior plate 21 where the rotary lock 30 is attached and the back surface of the interior plate 22 where the lock mechanism 40 is attached. The bracket 70 is made of a stainless steel plate having a relatively low thermal conductivity among metal plates.
As shown in FIG. 5, the bracket 70 is provided with a mounting plate 71 on the side of the rotary lock 30 that is slightly laterally applied to the back side of the exterior plate 21, and the mounting plate 71 includes the rotary lock 30. A laterally long oval mounting hole 72 that is inserted almost tightly through the main body 34 is opened.

On the upper and lower end edges of the mounting plate 71 on the rotary lock 30 side, two connecting pieces 73 from both left and right ends are formed by bending at right angles with a groove 74 provided therebetween. At the projecting ends of the pair of upper and lower connecting pieces 75, two upper and lower mounting plates 76 on the side of the lock mechanism portion 40 are formed which are bent at right angles upward and downward, respectively.
The mounting plate 76 on the side of the locking mechanism 40 is formed such that the upper mounting plate 76A has a vertical dimension larger than that of the lower mounting plate 76B, and on the back surface of the mounting position of the locking mechanism unit 40 on the interior plate 22, respectively. The upper and lower parts sandwiching the through hole 41 are applied separately, and also serve as reinforcement.

In the upper tall mounting plate 76A, the groove 74 of the connecting piece pair 75 is formed up to a position slightly above the center height position, and in the lower mounting plate 76B, the groove is slightly on the base side. 74 is formed. Further, a burring portion 77 is formed at a position near the upper edge of the upper mounting plate 76A and at a substantially central portion of the lower mounting plate 76B at a position aligned with the insertion hole 43 of the interior plate 22, respectively. A female screw is cut around the circumference to form a screw hole 78.
The four connecting pieces 73 described above each have three circular holes 79 shown in the figure.

  A seal pipe 80 is mounted in the bracket 70. The seal pipe 80 is made of a hard resin such as hard vinyl chloride, and has a length substantially equal to the length of the connecting piece 73 in the bracket 70 and a diameter larger than the interval between the upper and lower connecting piece pairs 75. . As shown in FIG. 9, the seal pipe 80 is formed by tightly fitting the peripheral walls on both sides sandwiching the center into the grooves 74 of the upper and lower connecting piece pairs 75, so that the mounting plate 71 and the lock mechanism portion on the rotary lock 30 side are fitted. Between the mounting plates 76 on the 40th side, the mounting plate 76 is completely mounted without rattling. The seal pipe 80 functions to secure a space 81 through which the shaft portion 36 side of the rotary lock 30 and the joint 55 of the lock mechanism portion 40 are inserted.

An example of a method for manufacturing the door 20 is as follows.
In FIG. 2, a holder 26 is attached to the periphery of the interior plate 22. Subsequently, the seal pipe 80 is fitted into the bracket 70, and both mounting plates 76 </ b> A and 76 </ b> B of the bracket 70 on the lock mechanism 40 side are applied to the back surface of the interior plate 22 with the screw holes 78 aligned with the insertion holes 43. Secure with double-sided tape.
The interior plate 22 assembled in this way is fitted to the exterior plate 21, and as shown in detail in FIG. 10, the stepped portion of the holder 26 around the periphery of the interior plate 22 is arranged inside the flange 25 of the exterior plate 21. Fit into.

  At this time, as shown in FIG. 6, the mounting plate 71 on the rotary lock 30 side of the bracket 70 is applied to the back surface of the exterior plate 21. If it does so, the attachment holes 31 and 72 of the exterior board 21 and the attachment board 71 will be match | combined, and the main-body part 34 of the rotary lock 30 will be passed through both the attachment holes 31 and 72 from the surface side of the exterior board 21. FIG. Next, a nut 83 is inserted from the through hole 41 of the interior plate 22 through the seal pipe 80, screwed into the main body 34 of the rotary lock 30, and tightened with a box wrench. Thus, the rims of the mounting holes 31 and 72 are clamped from both the front and back surfaces, and the rotary lock 30 is fixed in a fixed state in a fixed posture.

When the exterior plate 21 and the interior plate 22 are assembled as described above, the insertion hole 43 of the interior plate 22 is covered with a tape or the like, and the heat insulating material 23 made of foamed resin is provided between the exterior plate 21 and the interior plate 22. Is foam filled. As shown in FIG. 7, the heat insulating material 23 is filled and solidified in the entire space between the exterior plate 21 and the interior plate 22 except for the inside of the seal pipe 80. Here, in particular, since the peripheral edge of the interior board 22 is only inserted into the insertion groove 27 of the holder 26, the interior board 22 is positioned in a direction along the plate surface by receiving the foaming pressure of the foamed resin. There is a risk of slipping.
However, in this embodiment, the exterior plate 21 and the interior plate 22 are connected via the connecting piece 73 of the bracket 70, and the hard resin seal pipe 80 is fitted inside the connecting piece 73. Therefore, even if foaming pressure is applied, the connecting piece 73 is stretched without being deformed, and both the mounting plates 71 and 76 are held in a properly opposed state without being displaced with respect to the exterior plate 21 and the interior plate 22. The

  Next, the lock mechanism portion 40 is in a posture with the hook 50 facing upward, and the joint 55 is inserted into the seal pipe 80 from the through hole 41 of the interior plate 22. At the final stage of insertion, the connection hole 57 of the two-layer side plate 56 of the joint 55 is fitted to the shaft portion 36 of the rotary lock 30 so as not to rotate. Finally, the base 45 is applied to the surface of the interior plate 22, but the mounting plate 76 and the interior plate 22 are in a normal position without being displaced, and therefore the insertion hole 47 formed in the base 45 is provided in the interior plate 22. The insertion hole 43 and the screw hole 78 of the mounting plate 76 are aligned. Subsequently, when the bolt 42 is passed through the insertion holes 47 and 43 of the base 45 and the interior plate 22 and screwed into the screw holes 78 of the mounting plate 76, the shaft plate of the lock mechanism unit 40 is secured as shown in FIG. The lock mechanism portion 40 is fixed in a state where the shaft centers of the shaft portion 36 of the rotary lock 30 and the shaft 60 of the rotary lock 30 coincide with each other.

The door 20 assembled as described above is attached to the holder 26 so that it can swing open and close at the right edge of the entrance / exit 13 of the main body 10 after the packing 29 is attached to the holder 26. When the door 20 is closed, as shown in FIG. 10, the packing 29 is sealed while being adsorbed on the mouth edge of the entrance / exit 13.
In the case of further locking, when the key is inserted into the rotary lock 30 from the state of FIG. 10 and rotated 90 degrees counterclockwise as viewed from the front toward the closed position, the shaft portion 36 of the rotary lock 30, While the joint 55 and the shaft plate 60 of the hook 50 are integrally rotated in the same direction, the hook 50 is rotated laterally to the left side as viewed from the front, and as shown in FIGS. The distal end 52A side faces downward and enters the back side of the lock receiving portion 17 and is locked. Thereby, the door 20 is locked in a closed state.
In the case of unlocking, when the key is inserted again and rotated 90 degrees in the opposite direction toward the original open position, the hook 50 is raised in the original vertical direction, and the collar piece 52 is behind the lock receiving portion 17. Exits, that is, unlocks.

According to this embodiment, the following many advantages can be obtained.
Since the mounting plate 71 for the rotary lock 30 and the mounting plate 76 for the lock mechanism 40 are integrally connected by the connecting piece 73, the heat insulating material 23 is foam-filled between the exterior plate 21 and the interior plate 22. Even if it is subjected to foaming pressure or the like, the attachment plates 71 and 76 are held in a state of being accurately opposed to each other without being displaced with respect to the exterior plate 21 and the interior plate 22 by being stretched by the connecting piece 73. The For this reason, the rotary lock 30 and the lock mechanism 40 can be attached and connected at regular positions where the axial centers of the shaft 36 and the shaft plate 60 (joint 55) coincide with each other. Dynamic operation is secured.
In connection with the above, since adjustment of the axial center alignment of the rotary lock 30 and the lock mechanism part 40 can be made unnecessary, assembly and maintenance are facilitated. Since both the mounting plates 71 and 76 are connected by the connecting piece 73 to form one part such as the bracket 70, the number of parts is reduced.

Since both the mounting plates 71 and 76 are connected by the connecting piece 73 and integrated as the bracket 70, for example, cold heat in the cabinet is transmitted from the interior plate 22 of the door 20 to the exterior plate 21 via the bracket 70. However, since the bracket 70 is formed of a stainless steel plate having a relatively low thermal conductivity and the circular hole 79 is opened in the connecting piece 73, the transmission of cold heat is suppressed. Therefore, it is suppressed that the surface of the rotary lock 30 and the surrounding exterior plate 21 is cooled, and it is possible to prevent condensation on them.
Since the interior plate 22 is connected to the exterior plate 21 by the bracket 70, for example, even if an excessive load is applied to the lock mechanism portion 40 side, the interior plate 22 is not peeled off from the heat insulating material 23.

  Since the seal pipe 80 for securing the space 81 through which the shaft portion 36 side of the rotary lock 30 and the joint 55 of the lock mechanism portion 40 are inserted is provided in the bracket 70 which is difficult to deform, the seal pipe 80 is displaced. Is also prevented. Therefore, it is only necessary to secure a minimum insertion space 81 in the seal pipe 80. In other words, the space where the heat insulating material 23 is not arranged can be kept small, and the heat insulation inside and outside the door 20 is improved. be able to. Further, since the seal pipe 80 is fitted and mounted in the groove 74 formed in the bracket 70, it can be attached accurately without providing a special guide member or the like, and the attachment structure can be simplified.

  Since the seal pipe 80 is made of a hard resin, it is prevented from being deformed even when subjected to the foaming pressure of the heat insulating material 23, and a necessary insertion space 81 can be secured. Further, the moisture that has entered the insertion space 81 is prevented from soaking into the heat insulating material 23 side by the seal pipe 80, and the heat insulating function is prevented from being lowered. Furthermore, since the heat insulating material 23 can sufficiently wrap around the seal pipe 80, the heat insulating property and strength of the locking mechanism can be improved.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) If the joint provided in the lock mechanism is made of synthetic resin, it is effective to suppress heat transfer between the lock mechanism and the rotary lock.
(2) In the process of manufacturing the door, as a method of attaching the mounting plate for the locking mechanism part of the bracket to the back surface of the interior board before injecting the heat insulating material, temporarily fixing using a bolt for attaching the locking mechanism part You may make it do.

(3) The manufacturing process of the door illustrated in the above embodiment is an example. Besides, for example, the exterior plate and the interior plate are assembled by sandwiching only the bracket on which the seal pipe is mounted, and the heat insulating material is foam-filled. Thereafter, the rotary lock and the lock mechanism may be attached and connected.
(4) Further, the heat-insulating material is foam-filled without using a seal pipe, and the insertion space for inserting the connecting portion between the rotary lock and the lock mechanism portion may be formed by cutting through the heat-insulating material. Such a thing is also included in the technical scope of the present invention.
(5) The present invention can be widely applied to all cooling storages having other door opening and closing methods such as double doors.

The perspective view of the door opening state of the panel refrigerator which concerns on one Embodiment of this invention Exploded perspective view of door Exploded longitudinal sectional view of the locking mechanism Exploded plan view of lock mechanism Perspective view of bracket Sectional view of the door shell Sectional view showing the mounting operation of the lock mechanism Sectional view of the locking mechanism assembly completion state Rear view with seal pipe fitted to bracket Cross section before locking Cross section after locking Illustration of locking operation Cross section of conventional example

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Main body (storage main body) 13 ... Entrance / exit 17 ... Lock receiving part 20 ... Door 21 ... Exterior plate 22 ... Interior plate 23 ... Heat insulating material 30 ... Rotary lock 36 ... Shaft part 40 ... Locking mechanism part 50 ... Hook (lock part) 55 ... Joint 60 ... Shaft plate (rotating shaft) 70 ... Bracket 71 ... Mounting plate (on the side of the rotary lock 30) 73 ... Connecting piece (connecting portion) 74 ... Groove (fitting portion) 76, 76A, 76B ... (Lock Mounting plate 79 (mechanism 40 side) 79 ... Circular hole (opening) 80 ... Seal pipe (pipe) 81 ... Insertion space 83 ... Nut

Claims (3)

At the entrance of the storage body, a cooling storage room provided with a heat-insulating door formed by foaming and filling a heat insulating material between the exterior plate and the interior plate so as to be opened and closed,
The exterior plate of the door is attached with a rotary lock whose shaft portion is rotated in the forward and reverse directions via an inserted key, while the interior plate is provided with a lock receiving portion provided on the entrance / exit side. A lock mechanism portion provided with a lock portion that can be rotated between a position where the lock portion is released and a position where the engagement is released, and a rotation shaft of the lock portion in the lock mechanism portion; The shaft part of the rotary lock is connected so as to be integrally rotatable,
And in the back surface of the mounting position of the rotary lock in the exterior plate and the back surface of the mounting position of the lock mechanism portion in the interior plate, respectively, the mounting plate is arranged,
The said both mounting plates are integrally connected through the connection part, The cooling storehouse characterized by the above-mentioned. The cooling storage according to claim 1, wherein an opening is formed in the connecting portion to suppress heat transfer between the both mounting plates. The connecting portion is provided with a fitting portion for fitting a pipe that internally forms a space through which a connecting portion between the rotation shaft of the lock portion and the shaft portion of the rotary lock in the lock mechanism portion is inserted. The cooling storage according to claim 1 or 2, wherein the cooling storage is provided.

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