JP2004052387A - Door opening/closing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door opening/closing device which opens/closes a door even in a narrow space, and prevents the opened door from hindering loading/unloading of stored goods. <P>SOLUTION: According to the door opening/closing device, each outside door body 5 is rotatably borne by a pair of upper and lower hinges 30 with respect to a main body 2, and each inside door body 6 is borne in a manner being movable in parallel with the outside door body 5 via a pair of guides 20 arranged at upper and lower portion of the outside door body 5. Therefore after the inside door body 6 is moved in parallel along the guides 20 to a location that is superposed on the outside door body 5, the outside door body 5 is rotated to be opened by the hinges 30. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a door opening and closing device that opens and closes a door of a storage room, such as a catering car used in a facility that provides meals to a large number of people such as a hospital, a school, a hotel, a banquet hall, and the like. is there.
[0002]
[Prior art]
As an example of the prior art, there is one in which a door provided at a front opening portion of a storage room is opened and closed by rotating the door about a hinge as a rotation opening like a so-called double door.
[0003]
Further, there is a door that opens and closes a door provided at an opening in the front of the storage room in a so-called sliding door format.
[0004]
[Problems to be solved by the invention]
However, in the former case, the locus of the door is large, so that it is difficult to operate in a narrow place, and an open door in a passage or the like becomes an obstacle. This is especially true when the front opening is large and the door is large.
[0005]
In the latter case, the door moves in parallel, so there is no problem in operation in a narrow place.However, after opening, the door remains in the front opening and the opening cannot be fully opened. This causes inconvenience in taking in and out of goods.
[0006]
Therefore, an object of the present invention is to provide a door opening / closing device that can open and close a door even in a small place without obstructing the above-described disadvantages, and furthermore, the opened door does not interfere with taking in and out of storage items. I do.
[0007]
[Means for Solving the Problems]
Therefore, a first invention is a door opening and closing device for opening and closing a door of a storage room, wherein an outer door body having one side rotatably supported by a hinge with respect to a main body and having upper and lower guides; And an inner door body that can move in parallel along the guide.
[0008]
A second invention is the first invention, further comprising two outer doors and two inner doors, wherein each inner door is moved in parallel to a position overlapping each outer door along the guide. After that, each outer door is rotated and opened by each hinge.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. First, FIG. 1 is a front view of the catering vehicle 1 with the outer door body 5 and the inner door body 6 closed, and FIG. 2 is a front view of the catering car 1 with the inner door body 6 opened.
[0010]
The catering truck 1 is designed to be able to provide meals to an inpatient or the like using a tray 10, and is equipped with a caster 3 which is a traveling wheel to be moved to a lower portion of a box-shaped main body 2. The main body 2 is provided with an open opening for taking in and out a tray, and is provided with a door opening and closing device that can be opened and closed. As a form of the door opening / closing device, each outer door body 5 is rotatably supported with respect to the main body 2 by a pair of upper and lower hinges 30, and each inner door body 6 is formed by a pair of upper and lower guides (slide rails) 20. Are supported so as to be able to move in parallel to each of the outer door bodies 5 through the respective members.
[0011]
In the storage room of the main body 2, a plurality of shelves 7 for partitioning upper and lower partitions and mounting the tray 10 are provided.
[0012]
Next, FIG. 3 is a cross-sectional view showing a state in which the inner door body 6 is attached to the outer door body 5, and an upper locking member 27 having a substantially U-shaped cross section is fixed to an upper portion of the outer door body 5. The outer rail 24 of the guide 20 is attached to the front surface of the rear wall of the upper locking member 27. A lower locking member 28 having a substantially L-shaped cross section is fixed to a lower portion of the outer door body 5, and an inner rail 23 of the guide 20 is mounted on an upper surface of the lower locking member 28. On the other hand, an L fitting 29 is fixed to the upper part of the inner door body 6, and an inner rail 23 of the guide 20 is attached to the back surface of the L fitting 29, and an outer rail 24 And a plurality of bearings 25 are provided between both inner rails 23 and both outer rails 24.
[0013]
As a result, each of the inner doors 6 is supported by each of the outer doors 5 via the pair of upper and lower guides 20 so as to be able to move in parallel. The direction in which the guide 20 is attached is not limited to the above.
[0014]
As shown in FIG. 1, by opening each inner door body 6 from each outer door body 5 to the maximum, the opening of the main body 2 of the serving car 1 is closed by the both inner door bodies 6 and both outer door bodies 5. Become. As shown in FIG. 2, by pulling each inner door body 6 from the state of FIG. 1 to a position overlapping each outer door body 5, the opening of the main body 2 of the serving car 1 is occupied by both inner door bodies 6. The part of the area that has been covered is almost open.
[0015]
Next, the mounting state of the outer door body 5 will be described. A pair of hinges 30 is fixed above and below the left end and the right end of the main body 2, and one side of each outer door body 5 is attached to the hinge 30, and each outer door body 5 is provided with the hinge 30 as a fulcrum. Is rotatable.
[0016]
Further, a detailed configuration of the hinge 30 will be described with reference to FIGS. FIG. 8 shows a state before the hinge 30 is fitted. A hinge metal fitting 31 having a U-shaped cross section is fixed outward on one side of each outer door body 5, and a pair of hinge pins 32 It is fixed to a hinge fitting 31. On the other hand, a hinge fitting 33 having a U-shaped cross section is fixed to the main body 2 side, and the hinge fitting 33 is provided with a pair of receiving holes 34 into which the hinge pins 32 are fitted.
[0017]
Therefore, after moving each outer door body 5 from the state of FIG. 8 so that each hinge pin 32 is located above the axis of each receiving hole 34, each outer door body 5 is lowered and the hinge pin 32 is received. The hinge fitting 31 and the hinge fitting 33 are connected to each other as shown in FIGS.
[0018]
Further, as shown in the perspective view of the hinge 30 in FIG. 11, the shapes of the hinge fittings 31 and 33 and the positions of the hinge pins 32 are configured such that the hinge 30 can rotate 270 °. . As a result, as shown in the cross-sectional view of FIG. 7, the hinge 30 allows the outer door body 5 to be rotated by 270 ° using the hinge pin 32 as a rotation axis. As a result, when the outer door body 5 is fully rotated by 270 °, the outer door body 5 comes into contact with the side wall 9 of the main body 2 and does not obstruct the surroundings.
[0019]
The outer door 5 is mainly composed of a plate 5B made of a transparent synthetic resin material or glass surrounded by an outer frame 5A, and the inner door 6 is also mainly surrounded by an outer frame 6A. The operation of the above configuration composed of a transparent synthetic resin material and a plate 6B made of glass or the like will be described below. 4 to 7 are cross-sectional views showing a method of opening and closing the door. FIG. 4 shows that each inner door body 6 is pulled out from each outer door body 5 to the maximum so that the opening of the main body 2 can be opened and closed. FIG. 5 shows a state in which both inner doors 6 are closed by both outer doors 5. FIG. 5 shows that each inner door 6 is retracted to a position overlapping with each outer door 5 so that both inner doors 6 occupy the opening. FIG. 6 shows a state in which the inner door body 6 is stored in the outer door body 5 and the outer door body 5 is rotated by 90 °, and FIG. Is rotated by 270 ° and the opening is fully opened.
[0020]
First, the operation when the door is opened will be described. The locking device 11 is unlocked with the handle 8 provided on the inner door body 6 from the state of FIG. 4, the inner door body 6 is moved in parallel via the guide 20, and the inner door body 6 is pulled into a position overlapping the outer door body 5. . As a result, the state shown in FIG. 5 is obtained, and the portion that was previously shielded by the inner door body 6 is opened, and the tray 10 placed on the shelf 7 in this portion can be taken in and out. Become.
[0021]
Next, by pulling the handle 8 forward, as shown in FIG. 6, the outer door body 5 and the inner door body 6 move together with the hinge pin 32 of the hinge 30 as a rotation axis and a small turning radius. Start spinning. Further, when the outer door 5 and the inner door 6 are rotated in this state, the outer door 5 and the inner door 6 are finally rotated by 270 ° as shown in FIG. Therefore, in this open state, there is no hindrance to the passage of people in the passage. In this state, all the openings are opened, and a state where all the trays 10 placed on the shelf 7 can be taken in and out is maintained.
[0022]
Next, when closing the door, the procedure is reversed. That is, the inner door body 6 and the outer door body 5 that are integrated are rotated to rotate from the position of the side wall 9 of the main body 2 in FIG. 7 to the closed position in FIG. Move. Next, using the handle 8, the inner door body 6 is translated in a direction of being pulled out from the outer door body 5. When the body 2 is moved in parallel to the state shown in FIG. 4, the opening of the main body 2 is closed by the outer door body 5 and the inner door body 6.
[0023]
As shown in FIG. 5, if the door is rotated with the width of the door kept at L, the turning radius is L. In a narrow passage, the door hits the wall of the passage and the door cannot be fully opened. is there. In addition, the open door obstructs the surrounding space. In the present invention, the width of the door is approximately half of L, that is, about L / 2 when the inner door body 6 is rotated by rotating the inner door body 6 by first pulling the inner door body 6 into a position overlapping the outer door body 5. The door can be fully opened even in a narrow passage without any trouble, and it does not disturb the surroundings.
[0024]
It is needless to say that the present invention is not limited to the serving truck, but can be used for those having various storage rooms.
[0025]
Although the embodiments of the present invention have been described above, various alternatives, modifications or variations are possible for those skilled in the art based on the above description, and the present invention provides various alternatives described above without departing from the spirit thereof. It is intended to cover modifications or variations.
[0026]
【The invention's effect】
As described above, the present invention can provide a door opening / closing device that can open and close a door even in a narrow place and that does not obstruct the opening / closing of a stored item.
[Brief description of the drawings]
FIG. 1 is a front view of a catering car with an outer door body and an inner door body closed.
FIG. 2 is a front view of the catering car with an inner door body opened.
FIG. 3 is a cross-sectional view showing a relative mounting state of an outer door body and an inner door body.
FIG. 4 is a cross-sectional plan view showing a state in which the opening and closing doors are all closed.
FIG. 5 is a cross-sectional plan view showing a state where the inner door body is moved in parallel and stored in the outer door body.
FIG. 6 is a cross-sectional view showing a state in which the outer door is rotated by 90 ° with the inner door housed in the outer door.
FIG. 7 is a cross-sectional view showing a state in which the outer door is rotated by 270 ° in a state where the inner door is housed in the outer door.
FIG. 8 is a diagram showing a state before a hinge is fitted.
FIG. 9 is a front view showing a state where a hinge is fitted.
FIG. 10 is a plan view showing a state where a hinge is fitted.
FIG. 11 is a perspective view showing a state where a hinge is fitted.
[Explanation of symbols]
Reference Signs List 1 serving car 2 main body 5 outer door body 6 inner door body 8 handle 20 guide 23 inner rail 24 outer rail 30 hinge

Claims (2)

In a door opening and closing device for opening and closing a door of a storage room, one side is rotatably supported by a hinge with respect to a main body, and an outer door body having a guide vertically, and is capable of moving in parallel along the guide of the outer door body. A door opening and closing device comprising an inner door body. After the two outer doors and the two inner doors are provided, and each inner door is moved in parallel to the position overlapping with the outer door along the guide, each outer door is rotated by the hinge. The door opening / closing device according to claim 1, wherein the door opening / closing device is opened.

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