JPH0332951Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to a door opening/closing device for opening and closing a vertical opening of a predetermined room of a refrigerator or the like.

(b) Conventional technology A machine room with an open top and back is formed at the top of the refrigerator body, partitioned by left and right side walls and a door serving as the front wall, and a condenser, compressor, and blower are connected to this machine room. A refrigeration system in which a condensing unit is installed and air is taken in through a passage formed in the door to promote heat dissipation from the condensing unit is disclosed in Japanese Utility Model Application No. 125068/1983.

However, since the door is fastened with fastening means such as screws, it is troublesome to remove and fasten the door when cleaning the filter on the front of the condenser.

Utility Model Application Publication No. 60-83174 is an improvement on this point. This machine room 4 has engaging openings 16 that open upwardly on the left and right sides of the top surface, and a door 8 that opens and closes the front opening of this chamber 4. An elongated engaging protrusion 17 is provided, and a main portion 2 extending rearward from the top of the door 8 is provided on the left and right sides of the door 8.
6 and the door 8 is provided at the tip of the main portion 26 and is engaged with the upper surface of the opposing left and right edges of the engagement opening 16.
A rotating portion 25 serves as a rotating shaft when opening and closing the door, and a rotating portion 25 extends diagonally backward from the main portion 26 through the engagement opening 16 to form an obtuse angle with the main portion 26 to control the maximum opening of the door 8. An engaging arm 24 is provided having a sloped portion 27 having an engaging side 28 that engages with the engaging protrusion to limit the engagement,
The structure is such that the door 8 can be opened and closed.

In this configuration, as shown in FIG. 7, in the middle of opening the door 8, a composite force C is generated of the acting force that causes the door 8 to move in the direction A and the acting force that causes the door 8 to move in the direction B.
There is a drawback that the inclined portion 27 comes off from the engagement opening 16.

(c) Problems to be solved by the invention In view of the above-mentioned drawbacks, the present invention is designed to facilitate the removal and installation of the door by allowing the engaging arms provided on the left and right sides of the door to be inserted into and removed from the engagement opening. The purpose of the present invention is to provide a structure in which the engaging arm is hard to come off from the engaging opening while the door is being opened or closed.

(d) Means for Solving the Problems Based on the embodiment of the present invention, the machine chamber 4 has engaging openings 16 that open upwardly provided on the left and right sides of the top surface.
and a door 8 for opening and closing the front opening, which is the vertical surface of the machine room 4. At the left and right upper portions of the door 8, there is a main portion 26 extending rearward from the top of the door 8, and a tip of the main portion 26. A rotating portion 25 is provided on the upper surface of the opposing left and right edges of the engagement opening 16 and serves as a rotational fulcrum when the door 8 is opened and closed. An engagement arm 24 is provided with an inclined portion 27 extending diagonally backward from the main portion 26 through the engagement opening 16. An engagement side 35 that comes into contact with the lower rear edge of the engagement opening 16 is provided to extend rearward, and the slanted portion 27 including the engagement side 35 has a dimensional relationship that allows it to be inserted into and removed from the engagement opening 16. .

(E) Operation When the door 8 is normally opened and closed, the rotational action portion 25 comes into contact with both left and right edges of the engagement opening 16, and the opening and closing action is obtained. When the door 8 is pushed diagonally upward and rearward while the door 8 is being opened, the engagement side 35 hits the rear edge of the engagement opening to prevent the door 8 from coming off. Further, the door can be removed by lifting the door 8 at a predetermined position, and the door 8 can be attached by performing the reverse operation.

(F) Embodiment 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. Although not shown, the refrigerator is cooled to a predetermined temperature. It is equipped with a cooler. 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 arranged and an electrical equipment box 12 are housed.

The left and right side walls 6, 6 are vertical front flanges 1.
3 and a horizontal upper flange 14, and 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. An engagement opening 16 and an engagement protrusion 17 that hangs downward from near the front edge of this opening are formed in the 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 catcher 21 for holding the strike 15 is provided on the back side of the support.
In addition, a large number of holes 23 are formed in the folded portion 22 of the lower plate 20 in its longitudinal direction to serve as ventilation passages. 24
are a pair of left and right metal engaging arms fixed to the upper surfaces of both the pillars, which overlap the upper surface flange 14 of the side wall, and have a rear edge left and right rotation portion 2 as shown in FIG.
5, 25, a sloped part 27 that forms an obtuse angle with respect to the main part 26 and slopes downward from the rear edge of the main part 26 and passes through the opening 16, and a sloped part 27 that extends from the lower end of the sloped part. It consists of a front engagement side 28 that slopes forward and downward and faces the engagement protrusion, and a rear engagement side 35 that further extends rearward from the lower part of the inclined portion 27.
Furthermore, the relationship between the opening, the main part, and the inclined part is b>c>a.
Therefore, during the opening operation of the door 8, the relationship between the dimension d of the opening 16 and the dimension P between the ends of the front and rear engaging sides 28 and 35 is d>P. Reference numeral 29 denotes a rubber cushioning material fixed to the inclined portion 27, which comes into contact with the engagement protrusion 17 when the door 8 is closed, and reduces the vibration of the condensing unit to prevent noise generation by the engagement arm 24. 30
is a rod-shaped stopper that maintains the open state of the door 8, one end ring portion 31 of which is supported by a stopper 32 fixed to the base 11 so as to be rotatable in the vertical direction;
The bent portion 33 at the other end is inserted into 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 insert 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. Rotating portion 2 of joint arms 24, 24
5 and 25 are brought into contact with the upper surfaces of the left and right edges of the engagement opening 16, and the inclined portion 27 and both engagement sides 28 and 35 are positioned below the upper surface flange 14 through the engagement opening 16. In this state, the weight of door 8 causes the catcher 2 to
1 is in contact with the strike 15, and by pushing the door 8 backward, the catcher 2
The strike 15 is held between the main parts 1 and 1, the main part 26 abuts and overlaps the upper surface of the upper flange 14, and the door 8 is vertically supported and 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 rotation parts 25, 25 slide backward on the upper surface flange 14 while serving as a fulcrum, and the engagement arm 2
4 is located at the rear end of the engagement opening 16 to enable stable rotation, and the engagement side 28 gradually approaches the engagement protrusion 17.
By continuing to rotate further, the inclined portion 27 moves backward within the opening 16 and its upper and lower surfaces are reversed, and when the door 8 is in its maximum open state, the engaging side 28 engages with the engaging protrusion 17 and the door is closed. Rotation of 8 is restricted. This opened door 8 is supported by a stopper 30 at a predetermined opening angle of about 70 to 80 degrees.

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.

In the present invention, especially by providing the rear engaging side 35, when an acting force in the same direction as C in FIG. 7 acts on the door 8 during the opening operation as shown in FIG. Since the rear engagement side 35 touches the lower rear edge of the engagement opening 16 and restricts further movement, the engagement arm 24 does not come off from the engagement opening 16 and the door 8 does not come off. In this state, further acting force applied to the door 8 causes the door 8 to rotate, but the inclined portion 27 and the rear engagement side 35 prevent the door 8 from coming off.

In the above configuration, the front engagement side 28 and the engagement protrusion 1
7 prevents the support of the door 8 from becoming unstable due to the inclined portion 27 coming off from the engagement opening 16 and the rotating portions 25, 25 slipping on the upper flange 14 when the door 8 is opened too much. It has a safe structure.

(g) Effects of the invention According to the invention, even if an acting force acts in the direction in which the door disengages, the rear engagement side contacts the rear edge of the engagement opening and prevents the door from disengaging, so the door can be moved with force. Even if the door lifts up when you open it, it will not come off and is extremely safe.

The present invention not only prevents the door from coming off, but also has a structure in which the engaging side and the inclined part can be inserted into and removed from the engaging opening so that the door can be removed and attached without tools. It is characterized by a structure that prevents the door from falling off, and allows for easy inspection and maintenance of equipment inside the room covered by the door.

[Brief explanation of the drawing]

1 to 6 show embodiments of the present invention.
The figure is a front perspective view of the upper part of the refrigerator with the door removed, Figure 2 is a vertical cross-sectional side view of the main part including the door, 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 a perspective view of the main part. FIG. 6 is a perspective view of the door opening support portion, FIG. 6 is a longitudinal sectional side view of the engagement opening portion, and FIG. 7 is a longitudinal sectional side view of the main part of the prior art. 4... Machine room, 8... Door, 16... Engagement opening,
24... Engaging arm, 25... Rotating portion, 26...
Main part, 27... Inclined part, 35... Rear engagement side.

Claims (1)

[Scope of utility model registration request] A chamber with engagement openings that open upwardly provided on the left and right sides of the upper surface, and a door that opens and closes the vertical opening of the chamber, and a main part that extends rearward at the left and right upper part of the door, and a main part that extends backward. a rotating portion that is provided at the tip of the door and that engages with the upper surface of the opposing left and right edges of the engagement opening to serve as a pivot point when opening and closing the door; and a rotating portion that forms an obtuse angle with respect to the main portion. An engaging arm having an inclined part extending diagonally rearward from the main part through the engaging opening is provided, and the inclined part has an engaging arm having an inclined part extending diagonally rearward from the main part through the engaging opening, and the inclined part has an engaging arm having an inclined part extending diagonally upward and rearward from the main part through the engaging opening. A door opening/closing device in which an engagement side that abuts a lower rear edge of an engagement opening extends rearward, and the inclined portion including the engagement side can be inserted into and removed from the engagement opening.