JP3474438B2 - Door devices for storage, etc. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device for a storage cabinet or the like.

[0002]

2. Description of the Related Art The general structure of a hot and cold serving vehicle used in a hospital or the like is as follows. That is, by partitioning the inside of the main body consisting of a heat insulating box with wheels on the bottom by the intermediate wall to the left and right, and further partitioning each by the heat insulating wall,
Two refrigerating chambers are formed in the center and two warming chambers are formed at both ends, and adjacent refrigerating chambers and warming chambers are paired to provide two left and right pairs. Doors are provided on the front of the refrigerating compartment and the front of the refrigerating compartment, for example, the door on the refrigerating compartment side is supported at the center side and is opened so as to overlap with the adjacent door, and the door on the refrigerating compartment side is on the main body. It is supported by the corners and is opened so as to wrap around the side surface of the main body. A tray that can accommodate the pair of hot and cold compartments is provided, hot and cold foods are separately placed on the tray, and the doors of the hot and cold compartments that are paired are opened. By accommodating the trays across both chambers, hot food can be stored in a warm state and cold food can be stored in a cold state.

[0003]

By the way, it is convenient for the above-mentioned door to take such a posture as to follow the peripheral surface of the main body as much as possible when it is opened. For example, the door on the refrigerating compartment side exactly overlaps with the door of the adjacent refrigerating compartment, and the door on the refrigerating compartment side exactly overlaps with the side surface of the main body. This is because there is no need to worry about being caught on the door when the tray is taken in and out, the work is easy, and the appearance of the opened door is good. The present invention has been completed to meet the above demands.

[0004]

A door according to the invention of claim 1
The device is on the edge side where two doors arranged side by side are adjacent to each other.
It is supported so that it can swing, and the surfaces of both doors are flush
The back side of each of the
Support shaft of each doorAxis ofBut,
This is located on the same surface as the door surface.
It has special characteristics. Further, the door device according to the invention of claim 2
Allows the door to swing on one side of the opening provided on one side of the box.
Supported by the door, the door is exposed with the backside abutting the opening edge.
The surface is closed in a posture parallel to the opening surface, and the opening is
Open to wrap around toward the surface orthogonal to the surface
If possible, the support shaft of the doorAxis of
Is orthogonal to the surface including the surface of this door and the box.
Is located on the line of intersection with the surface including the
However, it has a feature.

[0005]

ACTION AND EFFECT OF THE INVENTION <Invention of Claim 1> One of the doors can be opened 180 degrees so that its surface overlaps with the surface of the other door which is closed. For example, when the support shaft is in a position retracted from the surface of the closed door toward the opening side, it hits the surface of the other door before opening one door 180 degrees. On the contrary, if the support shaft is in a position projecting to the front, 180 degrees can be opened, but the amount of projection of the support shaft becomes large. That is, according to the first aspect of the present invention, it is possible to open one door 180 degrees so as to overlap the other door while minimizing the protrusion of the support shaft toward the front side. <Invention of Claim 2> The door can be opened 270 degrees by superimposing its surface on a surface orthogonal to the surface having the opening. If the support shaft is in any other position, the door will move to 27
Even if it is not opened 0 degrees, or even if it is opened 270 degrees or more, it will not exactly overlap the orthogonal planes. According to the second aspect of the invention, the door can be opened 270 degrees in a state in which it is closely aligned with the surface of the box body that is orthogonal to the surface on which the opening is provided.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is applied to a hot / cold distribution vehicle will be described below with reference to FIGS. 1 to 19. As shown in FIG. 1, the hot and cold serving vehicle according to the present embodiment includes a storage chamber main body 1 (hereinafter, simply referred to as a main body) configured in a rectangular box shape as a whole. It is installed on a base 2 which has a large planar shape and also serves as a bumper, and casters 3 are provided at the four corners of the bottom surface of the base 2. A machine room 5 is provided on the upper surface of the main body 1, and the machine room 5 has a bottom portion slightly larger than the main body 1 so as to also serve as a bumper, and both side surfaces have a trapezoidal shape when viewed from the front. Is an inclined surface. The main body 1 has a shape in which both front and rear surfaces are opened, and is configured as a heat insulating box body in which a ceiling wall, a bottom wall, and left and right side walls are filled with a heat insulating material such as urethane foam.

Of these, the top surface of the bottom wall 1A is formed as a flat surface without steps. Explaining the front and rear end shapes of the bottom wall 1A, as shown in FIG. 2, the edge of the interior bottom plate 7 has a predetermined width portion folded on the lower surface side, and then the tip is bent downward at a right angle. There is. On the other hand, the edge of the exterior bottom plate 8 is bent upward at a right angle. The front plate 9 has a shape in which the upper end portion is bent twice at a right angle. These are made of stainless steel plate.

The upper surface 9A of the front plate 9 is superposed below the folding surface 7A of the interior bottom plate 7 with a spacer plate 10 made of a synthetic resin such as ABS resin or rubber interposed therebetween. The hanging bottom surface 9B is superposed on the surface of the hanging bottom surface 7B of the interior bottom plate 7, and is fixed by a screw 11. On the other hand, the lower end of the front plate 9 is superposed on the surface of the rising surface 8A of the exterior bottom plate 8 and fixed by the rivets 12. The bottom wall 1A is formed by foaming and filling the heat insulating material 13 between the bottom plates 7 and 8 and the front plate 9 assembled in this way, and in particular, a step is formed at the end of the upper surface of the bottom wall 1A. A shape that does not exist is realized. The purpose of sandwiching the spacer plate 10 is to prevent heat conduction from the inner bottom plate 7 to the front plate 9 and the outer bottom plate 8 side as much as possible. Further, since the end portion of the upper surface of the bottom wall 1A has a structure in which the double-layered inner bottom plate 7, the spacer plate 10, and the upper surface 9A of the front plate 9 are stacked, the structure has high strength.

As shown in FIG. 3, vertical frames 14 are erected at the widthwise central portions of the front and rear openings of the main body 1, respectively. An intermediate wall 15 is also provided in the center of the main body 1 in the width direction, and the inside is divided into two left and right chambers. Further, in the left and right two chambers, a heat insulating partition wall 16 is provided at a position slightly closer to the intermediate wall 15 side than the center portion in the width direction. Thereby, the intermediate wall 1
Refrigerating chambers 18 are formed on both sides of the refrigerating chamber 18, and outside of the partition walls 16 of the refrigerating chambers 18 are provided with warming chambers 19 each having a slightly larger frontage than the refrigerating chambers 18.

As shown in FIG. 5, in the vertical frame 14 described above, a heat insulating material 13A made of expanded polystyrene is fitted in a front frame 21 having a U-shaped cross section, and a decorative frame 22 having a slightly larger U-shaped cross section is fitted on the back side thereof. It is a prismatic structure. Then, as shown in FIG. 2, a mounting plate 21A bent inward is formed at the lower edge of the front frame 21, and the mounting plate 21A and
The upper surface 9A of the front plate 9 that constitutes the front edge of the bottom wall 1A described above.
The vertical frame 14 is fixed on the bottom wall 1A by driving the rivet 23 between and. Therefore, as shown in FIG. 3, there is no step around the lower end of the vertical frame 14. When the rivet 23 is driven between the upper surface 9A of the front plate 9 and the bottom wall 1A of the vertical frame 14, the spacer plate 10 is compressed and closely adheres to the folded surface 7A of the interior bottom plate 7, so that Even if dew condensation occurs on the surface of the vertical frame 14 and the dew condensation water flows down, it is possible to prevent the dew condensation water from entering through the gap between the interior bottom plate 7 and the front plate 9.

More specifically, the intermediate wall 15 is composed of two ducts 25, one for the front and one for the cold air. This duct 2
As shown in FIG. 4, reference numeral 5 includes a vertically long and deep groove-shaped main body portion 26 and a vertically long and shallow groove-shaped lid portion 27. The lid portion 27 is provided with an opening edge of the main body portion 26. It is formed in the shape of a hollow prism by covering the outside of the plate and fixing the side edges at appropriate places with screws. These two ducts 25
As shown in FIG. 5, they are spaced apart from each other and are also arranged at the front and back with a gap between them and the vertical frame 14. As shown in FIGS. The mounting plate 26A bent in the direction of the arrow is fixed to the bottom wall 1A by the rivet 28. As a result, the duct 25
The structure is such that there is no step around the lower end of the (see FIG. 3). On each of the left and right sides of each duct 25, a vent hole group 29 is formed so as to be divided in the vertical direction into seven regions in the drawing. On the inner surface side of each vent hole group 29, a cold air guide 30 for guiding cool air from the duct 25 through the vent hole group 29 to the left and right refrigerating chambers 18 is attached.

On the other hand, in the above-mentioned machine room 5, as shown by the chain line in FIG.
8, a cooler chamber 31 is defined so that a cooler 32 forming a part of the refrigeration cycle is accommodated in the cooler chamber 31 above the refrigerating chamber 18 on the right side. On the ceiling surface of the refrigerating room 18 on the right side, the cooler room 31
Is connected to the suction port 33. Further, a device hole 34A is opened in the ceiling surface corresponding to the upper side of each duct 25 (see FIG. 3), and the internal fan 34 is installed therein. Therefore, when the refrigeration cycle is operated and the internal fan 34 is driven, the cold air generated in the vicinity of the cooler 32 is blown into each duct 25 by the internal fan 34 and descends in the duct 25. While being blown out to the left and right refrigerating compartments 18 through the cool air guide 30 and the vent hole group 29, the cool air ejected to the right refrigerating compartment 18 continues to rise in the right refrigerating compartment 18 and is also blown to the left refrigerating compartment 18. The cold air flows through the gap between both ducts 25 and the gap with the vertical frame 14 into the refrigerating chamber 18 on the right side, and then rises up in the same manner to generate a circulating flow in which it is guided from the suction port 33 to the cooler chamber 31. Therefore, the left and right refrigerating compartments 18 are cooled. As shown in FIGS. 2 and 4, a tank 35 for receiving defrost water is removably housed in the bottom of one duct 25.

As shown in FIGS. 1 and 3, the partition wall 16 is formed by stacking and connecting seven unit partition walls 38 shown in the figure so that a predetermined insertion groove 39 is formed on a base 37. Has been done. The base 37 and the unit partition wall 38 are roughly formed by covering a metal core body with, for example, a plastic outer shell body having low heat conductivity, and have heat insulating properties. In the base 37 of the partition wall 16, as shown in FIG. 6, the horizontal portion of the L-shaped bracket 40 fixed to the lower portion of the inner surface of the outer shell 37A is applied to the inner bottom plate 7 of the bottom wall 1A, and the mounting plate 41 is attached. It is fixed by screws or rivets. Therefore, no step can be formed around the lower end of the partition wall 16. As shown in FIG. 3, the partition wall 1
A stopper 43 of a tray 46, which will be described later, is provided at the central position of 6 in the depth direction so as to project to the left and right.
Further, two magnetic metal plates 44 are provided on the front and rear end surfaces of the unit partition wall 38, one on each side.

Although not described in detail, heating chambers are formed on the left and right side walls of the main body 1, and warm air generated by a heating element housed therein is circulated to each heating chamber 19 by a fan or the like. It is supposed to be done. Tray receivers 45 formed by bending metal pipes are attached to both left and right sides of both ducts 25 forming the intermediate wall 15 in a horizontal posture protruding toward the left and right refrigerating chambers 18 over seven steps. The mounting position is a position slightly below each insertion groove 39 in the partition wall 16. On the other hand, the same number of tray receivers 45 are attached to the side walls of both heating chambers 19 at the same height.

As shown in FIG. 1, the tray 46 is formed of a plastic or the like into a horizontally long rectangular shape, and a boundary portion 46A is provided at a position slightly closer to one side than the center portion of the horizontal width.
Foods served in a cold state are placed on the narrow side of the boundary 46A, and foods served in a warm state are placed on the wide side. In this tray 46, the boundary portion 46A has the partition wall 1
6 is inserted into the insertion groove 39, and the lower surfaces of both ends thereof are pushed in while being received by the tray receiver 45, and when the stopper 43 is hit, the accommodation is completed. As a result, the cold food and the hot food placed on one tray 46 are respectively stored in the refrigerating chamber 18 and the warming chamber 19, and refrigerated or warmed.

Next, the door device will be described. At the front and rear openings of the main body 1, four doors 50A and 50 are provided.
B is equipped. The two central doors 50A are the refrigerator compartment 1.
As described in detail later, each of them is opened and closed with the vertical frame 14 side as the swing center. On the other hand, the two outer doors 50B are for the heating chamber 19 and are supported by the left and right side edges of the opening of the main body 1, respectively, and are opened to the outside so that they can be opened around the side surface 1B of the main body 1. Has been done. When the doors 50A and 50B are commonly described, they are referred to as the door 50.

The door 50 has a vertical frame 51 as shown in FIG.
, A handle frame 51A, two horizontal frames 52, and two window plates 53 made of a transparent resin plate or a glass plate. The one vertical frame 51 and the two horizontal frames 52, excluding the handle frame 51A, are formed in a cross-sectional shape as shown in FIG. 8 by extruding an aluminum material. Two fitting grooves 54 for fitting the window plate 53 are formed on the inner surface, and a packing 55 is formed on the back surface on the outer edge side.
Mounting groove 56 is formed. Both ends of the vertical frame 51 are 45
It is cut off every time. The lateral frame 52 is cut at 45 degrees at the end on the side connected to the vertical frame 51, at right angles at the opposite end, and cut at 45 degrees only at the inner corners. The handle frame 51A is also formed by extruding an aluminum material into a cross-sectional shape as shown in FIG. The handle frame 51A includes the above-mentioned three frames 5
It is a little wider than 1, 52, and two fitting grooves 54 for fitting the window plate 53 are formed on the inner surface, and a mounting groove 56 for the packing 55 is formed on the rear surface on the outer edge side. At the same time, a handle 57 is formed in the center of the front side in the width direction. Both ends of the handle frame 51A are cut at right angles, and only the inner corner is cut at 45 degrees.

The door 50 is assembled as follows. First, one vertical frame 51 and two horizontal frames 52 are assembled. In this case, as shown in FIG.
The diagonal connection ends of the horizontal frame 52 and the horizontal frame 52 are butted against each other while inserting the corner 58 formed at a right angle into the inside, and the corner 5
They are connected to each other by screwing with respect to 8, and are assembled in a U shape. Next, the window plate 53 is fitted over the fitting grooves 54 of the frames 51 and 52. Subsequently, the handle frame 51A is assembled, for which
A corner 60 is prepared in which an insert piece 62A inserted into the horizontal frame 52 from 1 and an insert piece 62B inserted into the handle frame 51A are provided so as to project at right angles to each other. Then, both insertion pieces 62A and 62B of the corner 60 are inserted into the end portions of the horizontal frame 52 and the handle frame 51A, respectively, and the end portions of the both frames 52 and 51A are abutted with their diagonal corners, respectively, and The handle frame 51A is abutted against two surfaces forming a right angle and screwed to the corner 60.
And the ends of the upper and lower horizontal frames 52 are connected to each other. Then, the packing 55 is fitted over the entire circumference of the mounting groove 56 on the back surface side to complete the door 50.

Since the opening space of the heating compartment 19 is wider than that of the refrigerating compartment 18, the door 50B on the side of the heating compartment 19 is formed wider. In addition, each frame 5 that constitutes these doors 50
The surface of 1, 51A, 52 is coated with resin. This is because aluminum has a high thermal conductivity, so that a heat insulating effect is expected so that cold heat of the refrigerating compartment 18 or warm heat of the refrigerating compartment 19 does not easily escape to the outside.

Further, the support structure of each door 50 will be described.
Only the front side will be described below, but the same applies to the rear side. The two doors 50A on the refrigerating compartment 18 side are swingably supported on the vertical frame 14 side in a posture in which the handle frame 51A is arranged outside. Therefore, as shown in FIG. 10, hinge plates 64 are fixed to the bottom surface of the bumper portion 5A of the machine room 5 and to the upper surface of the base 2 immediately before the vertical frame 14, respectively, and two hinge plates 64 are provided from the upper hinge plate 64. The upper hinge pin 65 is provided so as to face downward, and the two lower hinge pins 65 are provided so as to project side by side from the lower hinge plate 64. On the other hand, on the inner end side of the upper and lower edges of the door 50A, the inner end is slightly
The bearing brackets 66 protruding to the surface side of the bearing brackets 66 are fixed in a slightly floating state via spacers 67, and bearing holes 68 are formed in the protruding portions of the bearing brackets 66, respectively.

Therefore, the door 50A has the upper and lower bearing holes 68.
Are supported so as to be swingable by inserting hinge pins 65 respectively corresponding to. Door 50A is vertical frame 1
4, the upper and lower edges of the main body 1, and the metal plate 44 of the partition wall 16
The packing 55 attached to the peripheral edge of the back surface is brought into contact with the front surface 70 (the front surface of the frame) to close the opening in a posture parallel to the opening surface. Here, in particular, as shown in FIG. 11, the door 5 is closed when the axes of the upper and lower hinge pins 65 are closed.
It is set so as to be located on the same plane as the 0A surface 70 (frame surface).

Thus, for example, the door 50 on the left side of FIG.
When A is swung in the counterclockwise direction in the figure with the hinge pin 65 as the center, as shown in FIG.
The surface 70 of the left side door 50A can be opened 180 degrees by overlapping the surface 70 of the right side door 50A with the surface 70 of the right side door 50A. Here, for example, when the hinge pin 65 is at a position retracted to the opening side from the surface 70 of the closed door 50A, the hinge pin 65 hits the surface 70 of the other door 50A before opening the one door 50A by 180 degrees. On the contrary, the hinge pin 65
180 ° can be opened, but the amount of protrusion of the hinge pin 65 becomes large. That is, it is possible to open one door 50A so as to overlap with the other door 50A while minimizing the protrusion of the hinge pin 65 toward the front side.

Further, as shown in FIG. 10, a hinge collar 71 having a cam surface in which convex portions are arranged at 90 ° intervals is mounted around the lower hinge pin 65 in a non-rotating state, while the lower collar pin 71 is fixed. At the edge of the bearing hole 68, a hinge collar 72 having a cam surface that meshes with the above-mentioned cam surface is mounted in an opposed manner in a non-rotating state. And both hinge collars 7
The cam surfaces of 1, 72 are the door 5 with the door 50A closed.
OA is set to be engaged with each other in a state where it is fully opened at 90 degrees and a state where it is fully opened at 180 degrees. That is, when the door 50A is swung about the hinge pin 65, both hinge collars 71 and 72 rotate relative to each other, get on and off the cam surface and move up and down to be opened and closed. At the above-mentioned closed position, half-open position and full-open position, the cam is opened. Doors 50 with faces interlocking
A is in a lowered state and functions so that it can be lightly positioned at those positions. The spacer 67 is engaged with the bearing bracket 66 as described above because it is the door 50A.
When the hinge pin 65 is moved up and down, the hinge pin 65 is inserted into the bearing hole 68 while the hinge pin 65 is moved to the door 50A.
This is to avoid interfering with.

Next, the support structure of the door 50B on the side of the heating chamber 19 will be described. First, as shown in FIG. 1, columnar door guards 73 are provided on the left and right edges of the front and rear surfaces of the main body 1 over substantially the entire height between the bumper portion 5A of the machine room 5 and the base 2. Between the door guard 73 and the door 50A on the refrigerating compartment 18 side, the door 50B on the heating compartment 19 side is arranged with the handle frame 51A brought inward. As for the door guard 73, the two outer orthogonal surfaces are flush with the front surface 70 of the closed door 50B and the side surface 1B of the main body 1 as described later, and the corners are rounded. . The meaning of providing the door guard 73 is to prevent impact on the door 50B when the corner portion of the main body 1 is hit, and when the damage is severe, the door guard 73 is provided. It is detachable so that only the guard 73 can be replaced.

The support structure for the door 50B on the front right side of the heating chamber 19 will be described below. As shown in FIG. 13, hinge plates 74 are fixed to the corners of the lower surface of the bumper portion 5A of the machine room 5 and the corners of the upper surface of the base 2, respectively. From the upper hinge plate 74, the upper hinge pin 75 faces downward, Lower hinge plate 74 to lower hinge pin 75
Are respectively projected upward. On the other hand, on the outer end sides of the upper and lower edges of the door 50B, the door 50B is extended to the position of the hinge plate 74, and the extended end is slightly extended.
Of the bearing bracket 76 protruding to the surface 70 side of the
However, it is fixed in a slightly floating state via the spacer 77. Bearing holes 78 are formed in the protruding portions of the bearing bracket 76, respectively.

Therefore, the door 50B has upper and lower bearing holes 78.
Are supported so as to be swingable by inserting the corresponding hinge pins 75 into. The door 50B is closed by abutting the packing 55 attached to the peripheral edge on the back surface side over the side edges, the upper and lower edges of the main body 1, and the metal plate 44 of the partition wall 16. It is flush with the surface 70 of the door 50A on the refrigerating compartment 18 side. Here, in particular, in FIG.
As shown in, the axis of the upper and lower hinge pins 75 is positioned on the vertical line where the extension surface of the surface 70 (the surface of the frame) of the closed door 50B and the extension surface of the right side surface 1B of the main body 1 intersect. Is set to.

Thus, for example, when the door 50B is swung in the counterclockwise direction in the figure around the hinge pin 75, the surface 70 of the door 50B is moved to the main body 1 as shown in FIG.
The door 50B can be opened by 270 degrees so as to overlap with the right side surface 1B. Where the hinge pin 7
If the position of 5 is other than the above, even if the door 50B cannot be opened 270 degrees or 270 degrees conversely, the amount by which the hinge pin 75 projects to the front side or the side of the main body 1 becomes large. That is, it is possible to open the door 50B by 270 degrees so as to overlap the side surface 1B of the main body 1 while minimizing the protrusion of the hinge pin 75.

In addition, around the lower hinge pin 75,
Similar to the refrigerating chamber 18 side, the hinge collar 71 having a cam surface with convex portions arranged at intervals of 90 degrees is mounted in a non-rotating state, while the lower surface of the bearing hole 78 is provided with the above-mentioned cam surface. A hinge collar 72 having a mating cam surface is mounted in a counter-rotating manner opposite to each other. The cam surfaces of the hinge collars 71 and 72 are engaged with each other when the door 50B is closed, the door 50B is opened 90 degrees, the door 180B is opened 180 degrees, and the door 270 is fully opened. It is set. That is, the door 50B is attached to the hinge pin 7
When swinging around 5, both hinge collars 71, 72
Rotates relative to each other and is opened / closed while getting on / off the cam surface and moving up / down. At the above-mentioned closed position, 90 degree open position, 180 degree open position and fully open position, the cam surfaces are engaged with each other and the door 50B is opened.
Will be in a lowered state and will function so that they can be lightly positioned at those positions. The spacer 77 is engaged with the bearing bracket 76 because the door 50A on the refrigerating compartment 18 side is included.
It is similar to the case of.

As shown in FIGS. 16 and 17, the left and right side surfaces 1B of the main body 1 are provided with handles 80 for moving the serving car. The handle 80 is formed by bending a metal rod into a U-shape. On the other hand, in the substantially central position of the left and right side surfaces 1B of the main body 1, a rectangular accommodation recess 81 is formed.
Is formed with a recess. A pair of bearing bodies 82 are provided on the front and rear side surfaces of the housing recess 81. This bearing body 8
2 has a structure in which a bearing portion 84 is provided in the central portion of a vertically long leg body 83, and insertion holes 86 for screws 85 are formed at both ends of the leg body 83. Three screw holes 87 are formed vertically on the front and rear side surfaces of the accommodation recess 81 at the same intervals as the insertion holes 86 of the screws 85. The bearing body 82 is
By using the screw holes 87 at the center and the lower side, or at the upper side and the center, the screws can be attached in two steps, upper and lower. A dummy screw may be attached to the unused screw hole 87.

Both ends of the handle 80 are rotatably supported by the bearing portions 84 of the front and rear bearing bodies 82. Handle 8
0 is always in a hanging posture due to its own weight, and at this time, the handle 80 is completely fitted in the housing recess 81 without protruding from the side surface 1B of the main body 1. A cushioning member 89 made of rubber or the like is provided on the bottom surface of the accommodation recess 81 so as to abut against both arms of the handle 80. Further, stoppers 90 capable of abutting both arms of the handle 80 are provided at both ends of the upper surface of the accommodation recess 81. The stopper 90 is mounted flush with the side surface 1B of the main body 1. Then, when the handle 80 is rotated upward, as shown by the solid line in FIG. 17, both arms abut on the stopper 90 to take a predetermined tilting posture.
In addition, as shown in FIG. 1, a storage portion 93 capable of storing a power cord 92 and the like is provided on one of the inclined side surfaces of the machine room 5 described above.
Is formed with a recess.

The present embodiment is configured as described above,
Subsequently, an example of its use will be described. When the meal is to be accommodated in the catering car, the door 50A on the side of the refrigerating room 18 and the warming room 19 which form a pair
Open the side door 50B. The doors 50A and 50B are opened by holding the handle 57 and swinging around the hinge pins 65 and 75, and the opening degree is arbitrary, but for example, the door 50A on the refrigerating compartment 18 side is adjacent to the refrigerating compartment. The door 50B is opened 180 degrees toward the 18 side, and the door 50B on the heating chamber 19 side is opened 270 degrees so as to wrap around the side surface 1B of the main body 1.
In this case, the door 50A on the refrigerating compartment 18 side exactly overlaps the surface 70 of the door 50A on the adjacent refrigerating compartment 18 side, and
Since the handle 80 is accommodated in the accommodating recess 81, the door 50B on the ninth side also exactly overlaps the side surface 1B of the main body 1 and is positioned by the functions of the hinge collars 71 and 72, respectively. In this state, although the doors 50A and 50B are open, they do not project outward, so that work in the vicinity is extremely easy.

Then, the tray 46 on which the cold and hot meals are piled up is inserted into the insertion groove 39 of the partition wall 16 and slid on the tray receiver 45 to be accommodated therein. In this case, since the tray receiver 45 is formed of a metal pipe, slipping is good and the tray 46 can be accommodated smoothly. Further, since the tray receiver 45 is formed by bending the metal pipe, the obstruction of air circulation is minimized. Therefore, before the tray 46 is housed, the refrigerating chamber 18 is pre-cooled and the warming chamber 19 is stored. If you want to preheat
It is possible to circulate cold air or warm air well and efficiently precool or preheat the entire area of the refrigerating chamber 18 or the warming chamber 19. If the adjacent doors 50A on the refrigerating compartment 18 side are opened 90 degrees so that the doors 50A project from the main body 1 at right angles, the trays 46 can be accommodated in the left and right compartments at the same time. Door 50 after tray 46 is stored
When A and 50B are closed, the cold food placed on each tray 46 is stored in the refrigerating chamber 18 and the hot food is stored in the warming chamber 19, respectively.

When the catering car is moved, the power cord 92 is first unplugged. The power cord 92 is bundled and put in the storage part 93 on the side surface of the machine room 5, so that it can be cleaned up. Then, as shown in FIG. 18, the handle 80 arranged on the side surface 1B of the main body 1 is rotated and taken out from the accommodation recess 81, and the handle 80 can be pulled as it is to move the serving car. Further, when the handle 80 is turned upward, as shown in FIG. 19, it hits the stopper 90 and takes a predetermined tilting posture, so that by continuously pushing the handle 80, the catering car can be moved. When the serving car is moved to the desired position and the hand is released from the handle 80, the handle 80 pivots to the drooping posture by its own weight, and the housing recess 8
It fits perfectly in 1. The impact force generated when it is rotated in the hanging posture is absorbed by hitting the cushioning material 89. When the hot and cold storage is still performed at the destination to which the catering car has been moved, it can be dealt with by connecting the power cord 92 to an appropriate outlet at the destination. When serving food, the door 50 should be used as described above.
Open A and 50B and pull out the tray 46.

A tray 46 on which food is directly placed is provided on the car.
Since it is housed inside, the inside is liable to get dirty, so it needs to be cleaned frequently. This cleaning is
It is efficient to wipe with a sponge or cloth while sprinkling water with a hose. In this case, in the conventional catering car, since the cooler is provided in the duct 25 forming the intermediate wall 15, if water is applied by the hose, water may be applied to the cooler through the ventilation port. I couldn't water it. In this respect, according to the present embodiment, the cooler 32
Is provided in the machine room 5, and the duct 25 has a structure in which only cold air flows. Therefore, even if water enters the duct 25, it does not hang on the cooler 32, and therefore watering by a hose is adopted. It has become possible.

After the cleaning with water is completed, the wall surface is wiped off with a dry cloth or the like. Especially, water and residues are likely to remain on the bottom wall 1A. In this case, it is efficient if the bottom wall 1A is wiped with a cloth and swept from the opening on the front surface or the rear surface. However, in the conventional structure, the end structure of the front surface or the rear surface of the bottom wall 1A is a structure in which a front frame having a U-shaped cross section is fitted to the outside of the edges of the inner bottom plate and the outer bottom plate. There is a step on the part, and when it is swept out as described above, water and residue are easily caught on the step, and it is necessary to wipe it off carefully to avoid it. In that respect, according to this embodiment, the end portion of the bottom wall 1A has a structure without steps, so that water, residues, etc. can be swept out cleanly and easily from the bottom wall 1A. Also, the bottom wall 1A
Since the vertical frame 14, the duct 25, and the partition wall 16 disposed on the upper surface of the above are also attached without forming a step around the lower end thereof, water and residue can be removed cleanly as well. As described above, the tray receiver 4
Since 5 is formed by bending a metal pipe, it is difficult for dust and the like to collect, and it is extremely easy to wipe and clean the tray receiver 45 itself and the wall surface to which it is attached.

As described above, according to this embodiment,
Regarding the door 50A on the refrigerating compartment 18 side, the surface 70 of the door 50 of the refrigerating compartment 18 is adjacent to the door 50 of the refrigerating compartment 18.
It is possible to open 180 degrees so as to exactly overlap the surface 70 of A, and for the door 50B on the side of the heating chamber 19, the surface 70 with the hinge pin 75 as the center.
Can be opened 270 degrees so as to exactly overlap the side surface 1B of the main body 1, and the amount of protrusion of each hinge pin 65, 75 from the main body 1 is minimized. Therefore, when the tray 46 is taken in and out, the doors 50A, 5
There is no need to worry about being caught by the 0B or the hinge pins 65 and 75, the work is extremely easy, and the appearance is neat and good-looking.

<Other Embodiments> The present invention is not limited to the embodiments described above and the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition to the above, various modifications can be made without departing from the scope of the invention. (1) The present invention can be similarly applied to a catering car that performs only one of hot storage and cold storage. (2) Further, the present invention can be widely applied not only to the delivery car but also to all door devices in other storages such as a refrigerated showcase.

[Brief description of drawings]

FIG. 1 is an external perspective view of a hot and cold serving vehicle according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view near the end of the bottom wall of the main body.

FIG. 3 is a partially cutaway perspective view showing a structure inside the body.

FIG. 4 is an exploded perspective view of the duct.

FIG. 5 is a plan cross-sectional view showing the circulation structure of cold air.

FIG. 6 is a cross-sectional view showing a mounting structure at the lower end of the partition wall.

FIG. 7 is an exploded perspective view of a door

FIG. 8 is a sectional view of a frame other than the handle frame.

FIG. 9 is a sectional view of the handle frame.

FIG. 10 is an exploded perspective view showing a support structure for a refrigerator compartment door.

[FIG. 11] The same plane sectional view

FIG. 12 is a horizontal cross-sectional view with the door opened 180 degrees

FIG. 13 is an exploded perspective view showing a support structure for the door on the side of the heating chamber.

FIG. 14 is a sectional view of the same plane

FIG. 15 is a horizontal cross-sectional view with the door opened 270 degrees.

FIG. 16 is a perspective view showing a mounting structure of a handle.

FIG. 17 is a sectional view of the same.

FIG. 18 is a perspective view showing a state where the handle is pulled and operated.

FIG. 19 is a perspective view showing a state in which the handle is pushed and operated.

[Explanation of symbols]

1 ... Main body 1B ... Side surface (of main body 1) 18 ... Refrigerator 1
9 ... Hot room 50A ... Door (on the side of the cold room 18) 50B ...
Door (on the side of the heating chamber 19) 64 ... Hinge plate 65 ... Hinge pin 66 ... Bearing bracket 68 ... Bearing hole 70 ... Surface (of doors 50A and 50B) 74 ... Hinge plate 75 ... Hinge pin 76 ... Bearing bracket
78 ... Bearing hole

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinzo Kozuka, 16-16 Hoshizaki Electric Co., Ltd., South Building, Sakaemachi, Toyoake City, Aichi Prefecture (56) Reference JP-A-5-141143 (JP, A) −155580 (JP, U) Registered utility model 3030486 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 23/02 306

Claims (2)

(57) [Claims] 1. Two doors arranged side by side are swingably supported at adjacent edge sides, respectively, and in a posture in which the front surfaces of both doors are flush with each other, their rear surface sides are in contact with the opening edges. A door device for a storage or the like, characterized in that the axis of the support shaft of each door is provided so as to be flush with the surface of the door. 2. A door is swingably supported on one edge side of an opening provided on one surface of the box body, and the door is closed in a posture in which the back surface is in contact with the opening edge and the front surface is parallel to the opening surface. In addition, in the one that is capable of opening around the surface orthogonal to the surface provided with the opening, the axis of the support shaft of the door is a surface including the surface of the door,
A door device for a storage cabinet or the like, which is provided on a line of intersection with a surface of the box body including an orthogonal surface.