JPH0228380Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a door opening/closing device used in refrigerators and the like.

(b) Prior art Japanese Utility Model Application Publication No. 54-125068 forms a machine room in the upper part of the refrigerator body, which is defined by left and right side walls and a door serving as the front wall, and has an open top and back side. A condensing unit consisting of a condenser, a compressor, and a blower is installed, and air is taken in through a passage formed in the door to promote heat dissipation from the condensing unit.

The door is fixed to the left and right walls so that it can be removed for cleaning the filter placed on the front of the condenser or for maintenance and inspection of the condensing unit. Not only does it take time to install the door located above the main body, but the door must also be removed even when cleaning the filter, making the process of removing the door time-consuming. It was hot.

(c) Purpose of the invention The purpose of this invention is to solve the drawbacks of the prior art.

(d) Structure of the device A pair of left and right side walls each having an opening in the upper flange and an engaging protrusion extending downward from near the front edge of the opening, overlapping the upper flange and having an acting part in the rear edge. a main part formed therein, a sloped part that passes through the opening from the rear edge of the main part excluding the acting part and slopes backward downward, and an engagement part that slopes forward downward from the lower end of the slope and faces the engagement protrusion. As the door rotates upward, the operating part of the main part contacts the top flange and slides backward, and the inclined part opens. A door opening/closing device in which the upper and lower surfaces are reversed while moving inside the door, and the engaging portion gradually approaches and engages with the engaging protrusion to restrict rotation of the door.

(E) Embodiment of the invention Reference numeral 1 shown in Figs. 1 to 3 is a refrigerator whose main body is composed of an insulating wall 3 with a plurality of insulating doors 2 on the front. Equipped with a cooler to cool the room. 4 is a top-open machine room formed in the upper part of the main body, and has a pair of left and right metal side walls 6, 6 that are erected on both left and right sides of the heat insulating wall and are interconnected by a beam 5; It is defined by a metal door 8 disposed on the upper front side of the heat insulating wall and forming a passage 7 for guiding air to a condensing unit to be described later, and is connected to a condenser 9 equipped with a filter 10 on the front side, a compressor and a blower (not shown). A base 11 in which a condensing unit is installed and an electrical equipment box 12 are housed.

The left and right side walls each include a vertical front flange 13;
The lower part of the front flange 13 is provided with a strike 15 that pairs with a catcher to be described later and closes the lower part of the door 8, and the front part of the upper flange 14 has an opening. 16 and an engagement protrusion 17 that hangs downward from near the front edge of this opening. The door is composed of a pair of left and right columns 18, 18, and two upper and lower plates 19, 20 supported by these columns, and the passage 7 is opened by separating the adjacent edges of the upper and lower plates. A strike 15 is formed on the back side of the pillar.
The lower plate 20 is provided with a catcher 21 that holds the
A large number of holes 23 serving as ventilation passages are formed in the folded portion 22 in its longitudinal direction. Reference numeral 24 denotes a pair of left and right metal engagement arms fixed to the upper surfaces of both the pillars, which overlap the upper surface flange 14 of the side wall, and a fourth
As shown in the figure, there is a main part 26 in which working parts 25, 25 are formed on the left and right sides of the rear edge, an inclined part 27 which is inclined downward from the rear edge of the main part and passes through the opening 16, and It consists of an engaging portion 28 that is downwardly inclined and faces the engaging protrusion. Furthermore, the opening,
The relationship between the main portion and the inclined portion is a<b>c. 29 is a rubber cushioning material fixed to the inclined part 27, and the door 8
When the door is closed, it comes into contact with the engagement protrusion 17 to alleviate the vibration of the condensing unit and prevent the engagement arm 24 from generating noise. Reference numeral 30 denotes a rod-shaped stopper for maintaining the open state of the door 8, one end of which has a ring portion 31 that is rotatably supported in the vertical direction by a stopper 32 fixed to the base 11, and the other end of which has a bent portion 33. It is inserted into and engaged with the hole 23 of the door. Incidentally, when the door 8 is closed, this stopper is maintained horizontally by the holder 34 as shown by the dashed line in FIG.

Next, to explain how to install the door 8, as shown in Fig. 1, the door 8 is tilted forward and downward and lifted above the side walls 6, 6, and then the door 8 is lowered in the direction of arrow A and engaged. Action parts 25, 2 of arms 24, 24
5 is brought into contact with the upper flange 14, and the inclined portion 27 and the engaging portion 28 are positioned below the upper flange 14 through the opening 16 as shown in FIG. In this state, the catcher 21 is in contact with the strike 15 due to the weight of the door 8, and by pushing the door 8 backward, the strike 15 is held between the catcher 21 as shown in FIG.
The door 8 is vertically supported by contacting and overlapping the upper surface of the door 4, and is in a closed state. Note that the door 8 can be removed by performing the operations in the reverse order.

When opening the attached door 8, the door 8 is first rotated upward so as to disengage the catcher 21 from the strike 15. With this rotation, the action parts 25, 25 slide backward on the upper surface flange 14 while serving as a fulcrum, as shown in FIG.
Moreover, the engaging portion 28 gradually approaches the engaging protrusion 17.
By continuing to rotate, the inclined portion 27 moves backward within the opening 16 and its upper and lower surfaces are reversed, and the engaging portion 28 engages with the engaging protrusion 17 to restrict the rotation of the door 8. be done. This opened door 8 is supported at a predetermined angle by a stopper 30.

According to such a configuration, the inclined portion 27 of the engaging arm 24
The door 8 can be attached by inserting it into the opening 16.
Also, by removing the inclined portion 27 from the opening 16, the door 8
This makes it easy to attach and detach the door 8, and when opening the door 8, the engaging arm 24 rotates upward as the door 8 is rotated upward. As a result, the angle between the main portion 26 and the upper flange 14 increases, and the operating portions 25, 25 act as fulcrums and slide on the upper flange 14, and the inclined portion 27 moves within the opening 16 in accordance with this sliding. Then, turn the upper and lower surfaces upside down so that the engaging portion 28 is aligned with the engaging protrusion 1.
By approaching and engaging with the door 7, the upward rotation of the door 8 is restricted, so the door 8 can be opened at a predetermined angle.

Therefore, when cleaning the filter 10 of the condenser 9, the door 8 can be easily opened, and when performing maintenance and inspection of the condensing unit, the door 8 can be easily removed so that it does not get in the way, and inspection work can be done easily. After that, the door 8 can be easily attached, and cleaning of the filter 10 and maintenance and inspection of the condensing unit in the configuration in which the machine room 4 is formed above the main body are extremely easy, and the operation of the door 8 is also easy.

(f) Effects of the invention A door having left and right side walls having upper flanges forming an opening and an engaging protrusion, a main part with an operating part, a pair of left and right engaging arms consisting of an inclined part and an engaging part. The door can be easily attached and detached, and the door can be opened at a predetermined angle by rotating and sliding the engaging arm when the door is attached.

[Brief explanation of the drawing]

The drawing shows an embodiment of the proposed door opening/closing device.
The figure is a perspective view of the refrigerator with the door removed, Figure 2 is a vertical sectional view of the main part, Figure 3 is a perspective view of the door open, Figure 4 is an exploded perspective view of the main part, and Figure 5 is an enlarged view of the main part with the door open. , Figure 6 A,
B and C are explanatory diagrams of the opening order of the doors. 6, 6... Side wall, 8... Door, 14... Top flange, 16... Opening, 17... Engaging protrusion, 24...
...Engaging arm, 25, 25... Acting part, 26... Main part, 27... Inclined part, 28... Engaging part.

Claims (1)

[Scope of utility model registration request] It consists of a pair of left and right side walls each having an opening in the upper flange and an engagement protrusion extending downward from near the front edge of the opening, and a door provided with a pair of left and right engagement arms, the engagement arms comprising: a main part that overlaps the top flange and has an operating part that serves as a rotation fulcrum of the door at its rear edge; and an inclined part that extends downward from the rear edge of the main part, excluding the operating part, through the opening. , an engaging part formed at the lower end of the inclined part, which engages with the engaging protrusion and restricts the rotation of the door when the door rotates upward using the acting part as a fulcrum. A door opening/closing device characterized by: