JPH07270037A - Device for opening/shutting door of machine room - Google Patents

Abstract

PURPOSE:To provide a door-opening/shutting device for a machine room wherein opening/shutting and holding of a door can be effected easily and surely in the door of the machine room set at an upper section of a refrigerator body. CONSTITUTION:A machine room 8 is formed at an upper section of a main body 3, and a door 12 is arranged at the front face of the machine room 8. An insertion hole 31 formed at upper both sides of an upper beam 7 of the machine room 8, an engagement hole 32 formed at the front of the upper beam 7 corresponding to the insertion hole 31, a left and right pair of engagement arms 14 which are formed at an upper section of the door 12, elongating backward to be respectively inserted and engaged into the insertion holes 31, are provided. the engagement arms 14 are superposed on the upper beam 7. A main section 21 having an acting section 22 at a part of its rear edge, working as a fulcrum of the door 12, a slanting section 23 slanting backwards down passing through the insertion hole 31 from a rear edge excepting the acting section 22 of the main section 21, and an engagement section 24 formed at the edge of the slanting section 23, inserted and engaged into the engagement hole 32 in accordance with a rotation movement to an upper direction of the door 12 with the acting section 22 as a fulcrum, are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device for a machine room formed on an upper part of a storage body such as a cooling storage.

[0002]

2. Description of the Related Art Conventionally, a refrigerator for commercial use used in a cold storage of this kind, particularly in a kitchen of a restaurant, is disclosed in, for example, Japanese Utility Model Publication No. 3-30791 (F25D23 / 02).
As shown in FIG. 3, a machine room for installing a condenser unit such as a condenser and a compressor is formed in the upper part of the main body, and the front surface of the machine room is closed by a door so as to be openable and closable.

In this case, in the above publication, openings are formed in the upper surfaces of the left and right side walls of the machine room, and engaging arms inserted into and engaged with the openings are provided at the upper part of the door to rotate the door in the vertical direction. However, although the machine room could be opened and closed, it was necessary to provide a stopper to keep the machine room open by rotating the door upwards, resulting in an increase in the number of parts and assembly steps. The cost was soaring.

Also, when opening the door, the user must rotate the door upward with one hand and hold the state while hooking the stopper with the other hand, and both hands are blocked. There was also a problem that the work was complicated.

Therefore, for example, in Japanese Utility Model Laid-Open No. 5-73482 (F25D19 / 00), a locking hole (corresponding to the opening) is formed on the upper beam of the machine room, and a metal fitting provided on the upper part of the door (the above-mentioned). A locking piece protruding upward is provided on the (corresponding to the engaging arm), and when the door is turned upward to open the machine chamber, this locking piece is engaged with the projection at the trailing edge of the locking hole. As a result, this open state can be maintained.

[0006]

According to such a structure, the stopper is not required, the number of parts can be reduced, and the user can open and hold the door with one hand. However, since the engagement state between the locking piece and the protrusion cannot be seen by the user, the engagement between the two is likely to be incomplete. Therefore, there is a risk that an accident such as the door suddenly drops and closes during the subsequent maintenance work.

Further, even when the door is closed, it is difficult to smoothly disengage the coupling fittings provided on both sides of the door because it is impossible to see whether or not the locking piece is disengaged from the projection. , Improvement of operability was desired.

The present invention has been made to solve the above-mentioned conventional technical problems, and can easily and reliably open and close the door of the machine room provided at the upper part of the main body of the storage. It is an object of the present invention to provide a door opening / closing device for a machine room capable of operating.

[0009]

A door opening / closing device for a machine room according to the present invention is applied to a storage room in which a machine room is formed in an upper part of a main body, and a door is arranged in front of the machine room. Insertion holes formed on both upper surfaces of the upper beam or on the upper surfaces of the left and right side walls of the machine room, upper beams corresponding to the front of each insertion hole, or locking holes formed on the front surfaces of the left and right side walls, and the door. , A pair of left and right engaging arms that extend rearward and are inserted and engaged in the insertion holes, respectively, and these engaging arms overlap the upper beam or the left and right side walls, A main part having an action part that serves as a pivot fulcrum of the door at a part of its rear edge,
An inclined portion that slopes rearward and downward from the rear edge of the main portion, excluding the action portion, through the insertion hole, and the tip of this inclined portion, which is formed by the upward rotation of the door with the action portion as a fulcrum. And an engaging portion that is inserted and engaged in the locking hole.

[0010]

According to the door opening / closing device of the machine room of the present invention, the upper beam corresponding to the front side of the insertion hole formed on both upper surfaces of the upper beam of the machine room or the upper surfaces of the left and right side walls, or the left and right side walls. A locking hole is formed on the front surface, and the tip of the inclined part of the engaging arm provided at the upper part of the door and inserted and engaged in the insertion hole is inserted into the locking hole as the door rotates upward. Since the engaging portion to be engaged is formed, the open state of the door is maintained by the engagement between the engaging hole on the front surface and the engaging portion. Therefore, the conventional holding stopper is not required, and the opening and holding operation can be performed with one hand.

Particularly, the locking hole is the upper beam of the machine room, or
Since it is formed on the front surfaces of the left and right side walls, the user can easily check the engagement state between the engagement portion and the locking hole. Therefore, when the door is rotated upwards,
Moreover, the engaging portion can be surely inserted into and engaged with the locking hole, and the subsequent maintenance can be performed safely. Further, since it is possible to easily confirm the disengagement between the two even when the door is closed, it is possible to significantly improve the opening / closing operability of the door as a whole.

[0012]

An embodiment of the present invention will be described in detail below with reference to the drawings. 1 is an upper rear perspective view of a commercial refrigerator 1 as an embodiment of a storage to which the present invention is applied, and FIG. 2 is an upper perspective view of the refrigerator 1.

The refrigerator 1 of the embodiment is installed, for example, in a kitchen of a restaurant or the like, and a main body 3 is constituted by a heat insulating box opened to the front, and the front opening of the main body 3 has a plurality of heat insulating doors. It is closed by 4 and 4 so that it can be opened and closed. Then, the inside of the refrigerator 1 is cooled to a predetermined temperature by a cooler (not shown). The upper part of this body 3 (on the top wall)
The left and right side walls 6 and 6 made of steel plates erected on the left and right sides, and the upper beam 7 made of a long steel plate having a substantially L-shaped cross section welded and fixed across the upper front ends of the left and right side walls 6, 6. A machine room 8 that is open to the front and the top is formed.
A condenser 9 that constitutes a condensing unit, a compressor (not shown), an electrical equipment box 11, and the like are installed inside.

The front opening 8A of the machine room 8 is closed by a metal door 12 so as to be openable and closable. This door 1
Side caps 13 are attached to both sides of the door 2, and a pair of metal engaging arms 14 and 14 are welded and fixed to the left and right sides of the upper surface 12A of the door 12 and extend rearward.
The engagement arm 14 is provided on the upper surface 12A of the door 12 as shown in FIG.
The main part 21 welded on the upper part, the action parts 22, 22 formed on both sides of the rear edge of the main part 21, and the action parts 22,
It is provided with an inclined portion 23 that inclines rearward and downward from the rear edge of the main portion 21 except for 22, and an engaging portion 24 formed by bending the tip of the inclined portion 23 toward the front side in a substantially V shape. An anti-vibration rubber 26 is attached to the center of the inclined portion 23.

On the other hand, at the positions corresponding to the engaging arms 14, 14 on both sides of the upper surface 7A of the upper beam 7, rectangular insertion holes 31,
31 is provided, and further rectangular locking holes 32, 32 are also provided in the front surface 7B of the upper beam 7 corresponding to the front of the insertion holes 31, 31, respectively. The lateral widths of the insertion hole 31 and the locking hole 32 are the same as those of the main portion 2 of the engaging arm 14.
It is smaller than 1 and larger than the inclined portion 23,
The front-rear width of the insertion hole 31 has a sufficient dimension for inserting the inclined portion 23, and the vertical width of the locking hole 32 also has a sufficient dimension for inserting the engaging portion 24.

Then, the engagement arms 14 and 14 are inserted into the insertion holes 31 and 31 from above to be engaged with each other, and the door 12 is detachably attached to the upper beam 7. In this state, the door 12 closes the front opening 8A of the machine room 8 as shown in FIG. 3, and the main parts 21 and 21 of the respective engaging arms 14 and 14 overlap the upper surface 7A of the upper beam 7 and their inclinations. The parts 23, 23 pass through the insertion holes 31, 31 and are inclined rearward and downward. Then, the inclined portions 23, 23
The engaging portions 24, 24 at the tips are located below and rearward of the locking holes 32, 32, and the action portions 22, 22 on both sides of the rear edge of the main portion 21 are
It engages with both sides of the front edge of the insertion holes 31, 31.

With the above configuration, the opening / closing operation of the door 12 will be described with reference to FIGS. First, when the door 12 is opened from the closed state as shown in FIG. 3, the lower end of the door 12 is held with one hand and rotated upward. The door 12 has an engaging arm 14,
While turning in the clockwise direction in FIG. 3 around the action portions 22, 22 of 14, as a fulcrum, the whole moves rearward to a state as shown in FIG.

At this time, the engaging portion 24 at the tip of the inclined portion 23 is moved immediately after the locking hole 32, and the door 1 is moved forward as it is.
By pulling 2 (parallel movement), the engaging portion 24 is moved to the position shown in FIG.
As described above, it enters into the locking hole 32 and projects forward from the locking hole 32 from the front surface 7B of the upper beam 7. If the hand is released from the door 12 in this state, the door 12 rotates counterclockwise in FIG. 5 under its own weight, so that the engaging portion 24 engages with the lower edge of the locking hole 32 as shown in FIG. 12 is held in this open state. This eliminates the need for a conventional holding stopper and allows one-handed opening and holding operations.

Further, in this state, the engaging portion 24 has the locking hole 32.
Since it is exposed to the front from, the user can easily confirm the engagement state between the engagement portion 24 and the locking hole 32. Therefore, when the door 12 is rotated in the upward direction, it is possible to easily and surely insert the engaging portion 24 into the engaging hole 32 while visually confirming it, and at the time of subsequent maintenance. Suddenly the inconvenience of the door 12 closing etc.
Safety is improved.

Next, when closing the door 12, the door 12 is once lifted from the state of FIG. 6 and the lower edge of the locking hole 32 and the engaging portion 24 are disengaged (FIG. 5). Then, if the entire door 12 is pushed backward (parallel movement) and the engaging portion 24 is disengaged from the locking hole 32 (FIG. 4), the door 12 descends by its own weight and the front opening of the machine room 8 as shown in FIG. Close 8A.

Even when the door 12 is closed, it is possible to easily visually confirm the disengagement of the engaging portion 24 and the locking hole 32, so that the opening / closing operability of the door 12 is remarkably improved. Will be able to.

In the above embodiment, the insertion hole 31 is formed in the upper beam 7.
However, not limited to this, the insertion hole 31 is formed in the upper surfaces 6A, 6A of the left and right side walls 6, 6, and the locking hole 32 is formed in the front surface 6B of the side walls 6, 6 corresponding to the front thereof. You may form. However, in that case, the positions of the engagement arms 14 and 14 are further moved to the left and right outside.

[0023]

As described above in detail, according to the present invention, the upper beam corresponding to the front side of the insertion hole formed in the upper side of the upper beam of the machine room or the upper side of the left and right side walls, or the left and right side walls of the upper beam. A locking hole is formed on the front surface, and the tip of the inclined portion of the engaging arm provided on the upper part of the door and inserted into and engaged with the insertion hole is inserted into the locking hole as the door rotates upward. Since the mating engagement portion is formed, the open state of the door is maintained by the engagement between the engagement hole on the front surface and the engagement portion. Therefore,
It is not necessary to use a conventional stopper for holding, and the opening and holding operations can be performed with one hand.

Particularly, the locking hole is the upper beam of the machine room, or
Since it is formed on the front surfaces of the left and right side walls, the user can easily check the engagement state between the engagement portion and the locking hole. Therefore, when the door is rotated upwards,
Moreover, the engaging portion can be surely inserted into and engaged with the locking hole, and the subsequent maintenance can be performed safely. Further, even when the door is closed, it is possible to easily confirm the disengagement of the two, so that it is possible to significantly improve the operability of opening and closing the door as a whole.

[Brief description of drawings]

FIG. 1 is a top rear perspective view of a commercial refrigerator as an embodiment of a storage to which the present invention is applied.

FIG. 2 is a top perspective view of the refrigerator.

FIG. 3 is a vertical cross-sectional side view of an engaging arm portion of a machine room door.

FIG. 4 is a vertical sectional side view of an engagement arm portion for explaining an opening / closing operation of a door of a machine room.

FIG. 5 is a vertical sectional side view of the engaging arm portion for explaining the opening / closing operation of the door of the machine room.

FIG. 6 is a vertical side view of the engaging arm portion for explaining the opening / closing operation of the door of the machine room.

[Explanation of symbols]

 1 Refrigerator 3 Main body 6 Side wall 7 Upper beam 8 Machine room 12 Door 14 Engaging arm 21 Main part 22 Working part 23 Inclined part 24 Engaging part 31 Insertion hole 32 Locking hole

Claims (1)

[Claims] 1. A storage having a machine room formed on an upper part of a main body and a door arranged on a front surface of the machine room. The storage room is formed on both upper surfaces of an upper beam of the machine room or on upper surfaces of left and right side walls of the machine room. Insertion holes, and the upper beam corresponding to the front of each insertion hole, or locking holes formed in the front surface of the left and right sidewalls,
A pair of left and right engaging arms that are provided on the upper portion of the door and extend rearward and are inserted into and engaged with the insertion holes are provided, and the engaging arms overlap the upper beam or the left and right side walls. A main portion having an action portion which serves as a pivotal fulcrum of the door at a part of its rear edge, an inclined portion which is inclined rearward and downward from the rear edge excluding the action portion of the main portion through the insertion hole, An engaging portion that is formed at the tip of the portion and that is inserted into and engages with the locking hole when the door pivots upward with the acting portion as a fulcrum. Door opening and closing device.