JP2951200B2 - Machine room door opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing a door of 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 commercial refrigerator used in a refrigerator of this type, particularly in a kitchen of a restaurant, etc. is disclosed, for example, in Japanese Utility Model Publication No. 3-30791 (F25D23 / 02).
As shown in (1), 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 of the machine room is closed by a door so as to be openable and closable.

In this case, in the above publication, an opening is formed in the upper surface of the left and right side walls of the machine room, and an engaging arm inserted and engaged with the opening is provided at the upper part of the door, and the door is turned up and down. Although the machine room can be opened and closed, a stopper must be provided to keep the machine room open by turning the door upward, which increases the number of parts and assembly man-hours. , Which led to rising costs.

Further, when opening the door, the user needs to turn the door upward with one hand and hold the stopper with the other hand while holding the state, so that both hands are blocked. There was also a problem that the work became complicated.

Therefore, for example, in Japanese Utility Model Laid-Open No. 5-73482 (F25D19 / 00), a locking hole (corresponding to the opening) is formed in the upper surface of the upper beam of the machine room, and a coupling fitting ( (Corresponding to the engagement arm) is provided with a locking piece projecting upward, and when the door is turned upward to open the machine chamber, this locking piece is engaged with the projection on the rear edge of the locking hole. Thus, the open state can be maintained.

[0006]

According to this 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 projection is not visible to the user, the engagement between the two is likely to be incomplete. For this reason, there is a danger that an accident such as the door suddenly dropping and closing during the subsequent maintenance work may occur.

[0007] Further, even when the door is closed, it is difficult to see whether or not the locking piece has come off from the projection. Therefore, it is difficult to smoothly release the engagement of the joints provided on both sides of the door. Therefore, improvement in operability has been desired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and it is intended to easily and surely open and close and hold a door of a machine room provided at an upper portion of a main body of a storage. It is an object of the present invention to provide a machine room door opening / closing device capable of performing the following.

[0009]

The apparatus for opening and closing a door of a machine room according to the present invention is applied to a storage having a machine room formed in an upper part of a main body and a door arranged in front of the machine room. An insertion hole formed on both sides of the upper surface of the upper beam or on the upper surfaces of the left and right side walls of the machine room, an upper beam corresponding to the front of each insertion hole, or a locking hole formed on the front surface of the left and right side walls; And a pair of left and right engagement arms extending rearward and being inserted into and inserted into the insertion holes, respectively, and these engagement arms overlap the upper beam or the left and right side walls, A main portion having an action portion serving as a pivot point of the door at a part of the rear edge,
An inclined portion that slopes downward from the trailing edge of the main portion excluding the action portion through the insertion hole, and is formed at the tip of the slope portion, with the upward rotation of the door about the action portion as a fulcrum. And an engagement portion that is inserted and engaged with the locking hole.

[0010]

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

[0011] In particular, the locking hole is provided in the upper beam of the machine room, or
Since it is formed on the front surface of the left and right side walls, the user can easily confirm the engagement state between the engagement portion and the locking hole. Therefore, when the door is turned upward,
In addition, the engaging portion can be reliably inserted and engaged with the locking hole, and subsequent maintenance can be performed safely. Also, when the door is closed, the disengagement of the two can be easily confirmed, so that the operability of opening and closing the door can be significantly improved as a whole.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 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.

The refrigerator 1 of the embodiment is installed, for example, in a kitchen of a restaurant or the like, and has a main body 3 composed of 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 openably closed by 4 and 4. Then, the interior of the refrigerator 1 is cooled to a predetermined temperature by a cooler (not shown). Upper part of the main body 3 (on the top wall)
The left and right side walls 6, 6 made of steel plates erected on the left and right, and the upper beam 7 made of a long steel plate having a substantially L-shaped cross section welded and fixed between the upper front ends of the left and right side walls 6, 6. And a machine room 8 which is open to the front and upper surfaces.
Inside, a condenser 9 constituting a condensing unit, a compressor (not shown), an electrical box 11 and the like are installed.

The front opening 8A of the machine room 8 is closed by a metal door 12 so that it can be opened and closed. This door 1
Side caps 13 are attached to both sides of the door 2. A pair of metal engagement arms 14, 14 are welded and fixed to the left and right sides of the upper surface 12A of the door 12 and extend rearward.
The engaging 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 and 22 formed on both sides of the rear edge of the main part 21,
An inclined portion 23 which is inclined downward from the rear edge of the main portion 21 except for a portion 22, and an engaging portion 24 formed by bending the front end of the inclined portion 23 in a substantially L-shape toward the front side. At the center of the inclined portion 23, an anti-vibration rubber 26 is attached.

On the other hand, rectangular insertion holes 31 are provided at positions corresponding to the engagement arms 14 on both sides of the upper surface 7A of the upper beam 7, respectively.
In addition, rectangular locking holes 32, 32 are formed in the front surface 7B of the upper beam 7 corresponding to the front of the insertion holes 31, 31, respectively. The width of the insertion hole 31 and the locking hole 32 is the width of the main part 2 of the engagement arm 14.
1 and larger than the inclined portion 23,
The front-rear width of the insertion hole 31 is large enough to insert the inclined part 23, and the vertical width of the locking hole 32 is also large enough to insert the engagement part 24.

Then, the respective engagement arms 14 are inserted into the respective insertion holes 31 from above so as to be engaged, 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 portions 21, 21 of the respective engagement arms 14, 14 overlap on the upper surface 7A of the upper beam 7, and their inclinations. The parts 23, 23 are inclined backward and downward through the insertion holes 31, 31. Then, the inclined portions 23, 23
The engaging portions 24, 24 at the distal end are located behind and below 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 is engaged with both sides of the front edge of the insertion holes 31.

Next, the operation of opening and closing the door 12 with the above configuration 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 turned upward. The door 12 has an engagement arm 14,
While rotating clockwise in FIG. 3 with the fourteen working parts 22 and 22 as fulcrums, 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 has moved immediately after the locking hole 32, and
2 (parallel movement), the engagement portion 24
, And projects forward from the front surface 7 </ b> B of the upper beam 7 from the locking hole 32. In this state, if the hand is released from the door 12, the door 12 rotates counterclockwise in FIG. 5 by 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 such an open state. This eliminates the need for the conventional holding stopper, and allows the opening and holding operation with one hand.

In this state, the engaging portion 24 is locked by the locking hole 32.
, The user can easily confirm the engagement state between the engagement portion 24 and the locking hole 32. Therefore, when the door 12 is pivoted upward, the engaging portion 24 can be easily and reliably inserted into and engaged with the locking hole 32 while visually confirming it. Inconveniences such as the door 12 closing suddenly are resolved beforehand,
Safety is improved.

Next, when the door 12 is closed, the door 12 is temporarily lifted from the state of FIG. 6 to disengage the lower edge of the locking hole 32 from the engaging portion 24 (FIG. 5). Then, if the entire door 12 is pushed rearward (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, the disengagement between the engaging portion 24 and the locking hole 32 can be easily visually confirmed, so that the opening and closing operability of the door 12 can be significantly improved as a whole. Will be able to

In the above embodiment, the insertion hole 31 is formed in the upper beam 7.
However, the insertion hole 31 is formed in the upper surfaces 6A, 6A of the left and right side walls 6, 6, and the engagement hole 32 is formed in the front surface 6B of the corresponding side walls 6, 6. It may be formed. However, in this case, the positions of the engagement arms 14 move further to the left and right outside.

[0023]

As described in detail above, according to the present invention, the upper beam corresponding to the upper side of the upper beam on the upper side of the machine room, or the front side of the insertion hole formed on the upper surface of the left and right side walls, or the left and right side walls of the upper side beam. A locking hole is formed on the front surface, and the tip of the inclined portion of the engaging arm provided at the upper part of the door and inserted into the insertion hole is engaged with the locking hole with the upward rotation of the door. Since the engagement portion is formed, the open state of the door is held by the engagement between the engagement hole on the front surface and the engagement portion. Therefore,
This eliminates the need for a conventional holding stopper, and allows the user to open and hold with one hand.

In particular, the locking hole is provided in the upper beam of the machine room, or
Since it is formed on the front surface of the left and right side walls, the user can easily confirm the engagement state between the engagement portion and the locking hole. Therefore, when the door is turned upward,
In addition, the engaging portion can be reliably inserted and engaged with the locking hole, and subsequent maintenance can be performed safely. Further, even when the door is closed, the disengagement of both can be easily confirmed, so that the operability of opening and closing the door can be significantly improved as a whole.

[Brief description of the drawings]

FIG. 1 is an upper 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 sectional side view of an engagement arm portion of a door of a machine room.

FIG. 4 is a longitudinal 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 an engagement arm portion for explaining an opening / closing operation of a door of the machine room.

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

[Explanation of symbols]

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

Claims (1)

(57) [Claims] In a storage having a machine room formed in an upper part of a main body and a door disposed in front of the machine room, the machine room is formed on both upper surfaces of an upper beam of the machine room or upper surfaces of left and right side walls of the machine room. Inserted holes, the upper beam corresponding to the front of each insertion hole, or a locking hole formed on the front surface of the left and right side walls,
A pair of left and right engagement arms that are provided at an upper portion of the door and extend rearward to be inserted and engaged with the insertion holes, respectively, and the engagement arms overlap the upper beam or the left and right side walls. A main part having an operation part serving as a pivot point of the door at a part of a rear edge thereof, an inclined part inclined backward and downward through the insertion hole from a rear edge excluding the operation part of the main part, An engagement portion formed at the tip of the portion and inserted into the engagement hole with upward rotation of the door about the action portion as a fulcrum. Door opening and closing device.