JPH0330791Y2 - - Google Patents

Description

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

(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 in the room, and air is taken in through a passage formed in the door to promote heat dissipation from the condensing unit.

(c) Problems to be solved by the invention The doors are fixed to the left and right walls so that they can be removed for cleaning the filter placed in front of the condenser or for maintenance and inspection of the condensing unit. Since this fastening means is done with fasteners such as screws, not only is it time-consuming to attach the door located above the main unit, but the door must also be removed even when cleaning the filter. Also, the work of removing the door was time-consuming.

(d) Means for solving the problem In order to solve the above problem, this proposal forms a machine room for housing the condensing unit etc. on the upper part of the heat insulating wall that constitutes the main body of the refrigerator, and the left and right sides of the machine room are In a device having a pair of left and right side walls on both sides and a door on the front side, the left and right side walls have an opening at the front of the upper flange of the side walls, and a locking member extending downward from near the front edge of the opening. a mating protrusion, and the upper part of the door is provided with a pair of left and right engaging arms that extend rearward and are respectively inserted and engaged with the opening, the engaging arms overlapping the upper surface flange, a main part having a working part that serves as a rotational fulcrum of the door in a part of its rear edge;
A sloping part that passes through the opening and slopes downward from the rear edge of the main part excluding the action part, and is formed at the lower end of this slant part, and the door rotates upward using the action part as a fulcrum. , an engaging part that engages with the engaging protrusion to restrict rotation of the door, and a base on which the condensing unit is installed has an engaging part that engages with a hole formed in the door to move the door to the open position. To provide a door opening/closing device provided with a supporting rod-shaped stopper.

(e) Function The engaging arm 24 acts as a connecting member that connects the left and right side walls 6, 6 and the door 8, and also acts as a rotating member when opening the door 8, and moves the door 8 upward. As the engaging arm 24 rotates upward, the angle between the main portion 26 and the upper flange 14 becomes larger, and the operating portions 25, 25 serve as fulcrums while the inclined portion 27 rotates upward. The door 8 is moved inside the opening 16 and its upper and lower surfaces are reversed, and the engaging portion 28 of the engaging arm 24 engages with the engaging protrusion 17 to restrict upward rotation of the door 8. This opened door 8 moves the stopper 30 to the hole 2 of the door 8.
3, the door 8 is held in the open position.

(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. Reference numeral 4 denotes a machine room with an open top formed at the upper part of the heat insulating wall 3 constituting the main body;
A pair of left and right metal side walls 6, 6 are erected on both left and right sides of the heat insulating wall and are interconnected by a beam 5.
and a metal door 8 disposed on the upper front surface of the heat insulating wall and forming a passage 7 for guiding air to a condensing unit to be described later, a condenser 9 equipped with a filter 10 on the front surface, a compressor (not shown) and A base 11 in which a condensing unit consisting of an air blower 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 the 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 are attached to the 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 backwardly 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 b>c>a. 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, dampens the vibration of the condensing unit, and prevents the engagement arm 24 from generating noise. Reference numeral 30 denotes a rod-shaped stopper that maintains the open state of the door 8. One end of the ring portion 31 is supported by a stopper 32 fixed to the base 11 so as to be rotatable in the vertical direction, and the other end is 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 operating parts 25, 25 serve as fulcrums and slide backward on the upper flange 14, as shown in FIG. 6B, and the engaging part 28 gradually approaches the engaging protrusion 17. By continuing to rotate, the angle of rotation increases, and the inclined portion 27 moves backward within the opening 16 while its upper and lower surfaces are reversed, and the engaging portion 28 becomes the engaging protrusion as shown in FIG. 6C. 17, the rotation of the door 8 is restricted. 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
By inserting the engaging arm into the opening 16, this engaging arm becomes a connecting member that connects the left and right side walls 6, 6 and the door 8, and also acts as a rotating member when opening the door 8, As the engaging arm 24 rotates upward, the angle between the main portion 26 and the upper flange 14 increases, and the operating portions 25, 25 become fulcrums while the upper flange 14
The inclined part 27 moves within the opening 16 in accordance with this sliding movement and reverses its upper and lower surfaces, and the engaging part 28 approaches the engaging protrusion 17 and engages with it, that is, the lower end of the engaging arm 24 Since the upward rotation of the door 8 is restricted by hitting the lower surface of the upper flange 14, the door 8 can be opened at a predetermined angle.

Therefore, the door 8 can be easily opened when cleaning the filter 10 of the condenser 9, and the machine room 4 can be opened above the main body.
Cleaning of the filter 10 and maintenance and inspection of the condensing unit in a configuration in which
The door 8 can also be operated easily.

(g) Effects of the invention According to the above-mentioned invention, the engaging arm acts as a connecting member that connects the left and right side walls and the door, and
Since it acts as a rotating member that rotates the door in the vertical direction, it not only simplifies the work of connecting the left and right side walls and the door at the top of the refrigerator, but also simplifies the operation of the door. As it rotates upward, the rotation angle between the main part and the top flange increases, and the working part becomes the fulcrum,
The inclined part moves inside the opening and the upper and lower sides of the inclined part are reversed so that the engaging part of the engaging arm engages with the engaging protrusion, so the door can be opened at a predetermined angle and the door can be held at a predetermined position using the stopper. Since the machine room can be supported in the open position, maintenance and inspection of the machine room becomes extremely easy.

[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, 24...Engaging arm, 25,2
5... Acting part, 26... Main part, 27... Inclined part.

Claims (1)

[Scope of utility model registration request] A machine room for storing a condensing unit, etc. is formed above the heat insulating wall that constitutes the main body of the refrigerator, and a pair of left and right side walls are arranged on both left and right sides of the machine room, and a door is arranged in the front. The both side walls are provided with an opening at the front of the upper flange of the side walls, and an engaging protrusion extending downward from near the front edge of the opening, and an engaging protrusion extending rearward into the opening at the top of the door. A main portion comprising a pair of left and right engaging arms that are fitted together, the engaging arms overlapping the upper surface flange and having an operating portion on a part of its rear edge that serves as a pivot point for the door; A sloping part that passes through the opening and slopes downward from the rear edge of the main part excluding the action part, and is formed at the lower end of this slant part, and the door rotates upward using the action part as a fulcrum. , an engaging part that engages with the engaging protrusion to restrict rotation of the door, and a base on which the condensing unit is installed has an engaging part that engages with a hole formed in the door to move the door to the open position. A door opening/closing device characterized by having a supporting rod-shaped stopper.