JPH025351Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a refrigerator equipped with a rotating door that is pivotally supported by a hinge shaft.

(b) Prior art Utility Model Application No. 13492 (IPC, F25D23/06),
The door switch shown in Japanese Utility Model Publication No. 58-13493 (IPC, F25D23/06), etc. is a switch that turns off the interior light by pressing a movable piece directly with the rotating door when the door closes. It is. In this configuration, in which the door itself directly presses the door switch, the pressure and impact of the door are applied to the movable pieces when the door is closed, which often causes the contact points of the door switch to fail, resulting in a loss of durability. Not only that, the door recoils due to the reaction when the door is closed, and the gap formed between the door and the opening end of the insulation box gradually widens from the hinge side to the handle side, so the movable piece is not pressed. There were also drawbacks such as the interior light remaining on until the next time the door was closed.

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

(d) Structure of the invention A door switch including a door switch having a movable piece, and a hinge collar that is passed through a hinge shaft, is non-rotatably supported with respect to the door, and comes into contact with the movable piece so as to be able to move toward and away from the door. A refrigerator whose door switch is operated by a hinge collar that rotates with the door as it opens and closes.

(E) Example of implementation of the invention An example of the invention will be described below based on the drawings. 1 is a horizontally elongated under-counter type refrigerator installed in a cooking area of a restaurant, etc.; It consists of a machine room 3 with a front opening arranged side by side, and a metal top table 4 that covers the top surface of the heat insulating box and the machine room and serves as a cooking table. The insulation box is rotatably supported by a pair of upper and lower hinge shafts 5 and 6, and has two rotatable so-called double-opening insulation doors, one opening to the left and one opening to the right, which open and close the front opening. 7 and 8, as at least one of these doors is opened and closed, the interior light is turned on or off, or the fan for circulating cold air inside the refrigerator is operated.
Door switches 9 and 10 are provided to stop the door.
Reference numeral 11 denotes a support member made of metal that also serves as a reinforcing member and is disposed astride the upper front surface of the heat insulation box and the machine room, and protrudes forward from the upper wall 12 and the upper wall.
Lower wall 13 having a rearward-sloping slope portion 13A at the tip
and a rear wall 14, forming a wiring duct 15 for storing lead wires 16 extending from the door switches 9, 10 between the curved portion 4A of the front edge of the top table 4 engaged with the inclined portion. , lower wall 13
The upper hinge shaft 5 is welded to the upper hinge shaft 5, and the door switches 9 and 10 are fixed to the upper hinge shaft 5. Further, the lower wall 13 of this support member is formed with an opening 18 for attaching the pedestal 17 of the door switch, and a guide hole 19 for guiding a movable piece of the door switch, which will be described later, downward. The pedestal has a mounting part 20 in contact with the lower surface of the lower wall 13, a connecting part 21 passing through the opening 18, and a mounting part that floats away from the upper surface of the lower wall and supports the door switches 9 and 10. The mounting part 20 is fixed to the lower wall 13 with screws 24, with the two parallel protrusions 23, 23 formed on the upper surface of the mounting part 20 being aligned along the edge of the opening 18. By doing so, it is attached to the support member 11.
The above-mentioned double-door switch consists of a drip-proof micro switch, and one side has an internal contact that turns ON,
A movable piece 26 is provided to press the button 25 to turn OFF. This movable piece has a metal plate spring 27,
An arm 2 made of resin is fixed to the tip of this leaf spring and protrudes below the support member 11 through the guide hole 19.
It consists of 8.

Both doors have an inner plate 29 made of resin and an annular peripheral wall 3.
It consists of a metal outer plate 30 having an annular back wall 30A and an annular back wall 30B, and a foam heat insulating material 31 filled between the inner and outer plates, and a gasket 32 is fixed to the back wall. A lower hinge shaft 6 that pivotally supports the lower part of the door is welded to a seat 33 fixed to the front opening end surface of the heat insulating box 2.

Reference numerals 34 and 35 denote a pair of upper and lower hinge collars made of resin, including an exposed portion 36 that is exposed to the outside, and a rectangular buried portion 3 that is buried in the doors 7 and 8 without rotation.
7, which are inserted into the corresponding upper and lower hinge shafts 5 and 6, respectively. Of both the upper and lower hinge collars, the upper hinge collar 34 has an arm rod 38 extending rearward from the exposed portion 36, and a pair of arm rods 38 that protrude from the rear end of the arm rod on both left and right sides and contact the movable piece 26 so as to be able to move toward and away from the movable piece 26. Pressing portions 39A and 39B are formed. Among these pressing parts, the left pressing part 39A presses the movable piece 26 of the door switch 9, and the right pressing part 39B presses the movable piece 26 of the door switch 10, respectively. That is, both of these pressing parts are attached to the upper hinge collar 3 so that the movable pieces 26 of the door switches 9 and 10 can be mounted in the same direction.
4. In addition, both of these pressing parts 39A,
39B presses the arm 28 of the movable piece 26 when the door is in the closed state shown by the chain line in FIG.
OFF, and when the door is in the open state shown by the dashed line in FIG. 4, the movable piece 26 is separated from the arm 28, thereby causing the leaf spring 27 to release the pressure on the lead 25 and turning the door switches 9 and 10 ON. In this case, the door switches 9 and 10 are turned on using reverse contacts.

According to such a configuration, the door switches 9, 10 are turned on and off by the hinge collar 34, which is attached to the doors 7, 8 and rotates with the rotation of the doors, so that when the doors 7, 8 are closed, the doors 7, 8 are not pressed. Since no pressure is applied to the door switches 9, 10 and only the pressing force of the hinge collar 34 is applied to the door switches 9, 10, the impact force and pressing force on the door switches 9, 10 can be weakened. As a result, the durability of the door switches 9 and 10 is improved. In addition, since the hinge collar 34 is passed through the hinge shaft 5, this hinge shaft and the door switches 9, 10 are in a close relationship, so that when the door is closed, the bounce of the doors 7, 8 causes the insulation box 2 and the door 7, Even if a gap is formed between the doors 7 and 8, the movable piece 26 will be located at the narrowest part of this gap, and as a result, even if the doors 7 and 8 bounce back, the door switches 9 and 10 will not turn ON. There's nothing to do.

(f) Effects of the device Since the main proposal is structured as described above, it produces the effects listed below.

Since the hinge collar only hits the movable piece of the door switch when the door is closed, there is less impact on the movable piece, improving the durability of the door switch.

Because the hinge collar and door switch are placed in close proximity, even if a gap occurs due to the door bouncing back, the hinge collar can maintain the pressed state of the movable piece and keep the door switch in the OFF state. .

Since the door switch is installed in the duct formed between the front edge of the top table and the lower wall of the support member, it is possible to reliably prevent insulation failure of the switch due to dew buildup or water intrusion. .

[Brief explanation of the drawing]

The drawings all show embodiments of the proposed refrigerator, and the first
The figure is a sectional view of Figure 2 A-A', and Figure 2 is an overall perspective view.
FIG. 3 is a perspective view of the main parts showing the left door switch installed, FIG. 4 is a plan view of the main parts showing the right door switch installed, and FIG. 5 is a front view of the same. 5...Hinge shaft, 7,8...Door, 9,1
0... Door switch, 26... Movable piece, 34... Hinge collar.

Claims (1)

[Scope of utility model registration request] A refrigerator equipped with a rotating door pivotally supported by a hinge shaft includes: an insulating box with an open front; a support member disposed at the upper front of the insulating box and having a lower wall protruding forward; a top table whose edge engages the lower wall of the support member and covers the upper surface of the insulation box; and a duct formed between the front edge of the top table and the lower wall of the support member,
A movable piece consisting of a plate spring fixed to the lower wall of the supporting member and pressing the lead, and an arm fixed to the tip of the spring and projecting downward by passing through a guide hole formed in the lower wall of the supporting member. a door switch having a door switch; and a pressing part that is inserted into a hinge shaft that is fixed to the lower wall of the support member and projects downward, that is non-rotatably attached to the door and that comes into contact with the arm of the movable piece so as to be able to move toward and away from the arm. A refrigerator comprising a hinge collar and a hinge collar.