JPH081432Y2 - Opening / closing device for sliding doors in refrigerators, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an opening / closing device for a slide door in, for example, a large prefabricated refrigerator, a freezer, a storage, or a cold storage (hereinafter referred to as a refrigerator).

2. Description of the Related Art Generally, a slide door provided in a large prefabricated refrigerator is designed to prevent cold air from leaking when it is closed.
It has a structure in which it is pressed against the outer surface of the peripheral portion of the storage opening to be brought into close contact therewith.

Conventionally, in order to open and close such a slide door, for example, a so-called semi-auto slide door that has been semi-automatically opened only in one opening direction has already been developed. This semi-automatic slide door has the advantages that it can save energy without using electric power, is very economical, and can open and close the door with a relatively simple operation.

However, the conventional sliding door opening / closing device has the following problems.

First of all, when using the refrigerator as described above, usually, in order to carry in and carry out goods, people often go in and out with the luggage in their hands. When unlocking and sliding, it is inconvenient if the luggage is set aside and the door is not moved a little in the opening direction, otherwise it will not slide.

Further, since the mounting portion of the door lower end pressing roller that presses the door against the outer surface of the peripheral edge of the storage opening and the sealing portion and the stopper portion that stops the door in the closed state are separate mechanisms, each mechanism is However, it was necessary to adjust the mounting positions of the roller for pressing the lower end of the door and the stopper, which made the installation work of the sliding door relatively troublesome.

The conventional stopper mechanism that stops the door in the closed state is
Since the resin door roller that holds the door is pressed or hooked to stop the resin door roller, the resin door roller is easily worn and the life of the stopper mechanism is very short.

Further, since the conventional stopper mechanism is attached to the rail portion above the door, for example, if a foot pedal is used to unlock the door, an interlocking mechanism between the floor and the rail above the door is provided. It is necessary, the structure of the stopper mechanism becomes very complicated, and a failure is likely to occur, and since the interlocking mechanism of the stopper and the pedal is visible from the outside, the appearance of the refrigerator is impaired and the appearance is very bad.

The purpose of this invention is to solve the above problems of the prior art,
When you open the sliding door, you can unlock the door with a foot pedal, so you do not have to put the luggage in your hand sideways, you can open the door with your luggage in your hand It is very convenient, and moreover, the roller for pressing the lower end of the door and the stopper mechanism can be integrated, and the mounting positions of these can be set at the same time, so the equipment work of the sliding door is extremely convenient. It is very easy, and the life of the stopper mechanism is very long.
The structure is very simple, failure is unlikely to occur, the stopper mechanism is almost invisible from the outside, the appearance of the refrigerator is not impaired, and the appearance is very good. is there.

Means for Solving the Problems In order to achieve the above object, the present invention provides a frustoconical door lower end pressing roller centered on a vertical axis at a portion near the outer edge of the lower edge of a refrigerator opening. Rotatably attached,
At the lower end of the slide door, which is always urged to open,
A rail-like door swing preventing portion having a rearward downward inclined portion that engages with the pressing roller to prevent the door from swinging in the closed state of the door is provided, and the vertical axis of the pressing roller can be moved up and down. The upper end of the vertical shaft can also be retracted from the top of the pressing roller so that it also serves as a door stopper.A foot pedal that lifts and lowers the vertical shaft is arranged in front of the pressing roller, and The gist of the present invention is a device for opening and closing a slide door in a refrigerator or the like, in which a door opening preventing claw that engages with an upper end portion that also serves as a stopper of a vertical shaft is provided at a lower end portion so as to project downward.

Action When the slide door is closed, it is slightly lowered and pressed against the refrigerator so that the peripheral edge of the door is brought into close contact with the outer surface of the peripheral edge of the storage opening. And the door is always urged in the opening direction by the action of the semi-auto slide mechanism,
When the foot-operated pedal is depressed when opening the sliding door, the vertical shaft is pushed down, so that the upper end of the vertical shaft also serving as the door stopper is disengaged from the door opening preventing pawl, and the door is unlocked. Therefore, when opening the sliding door,
There is no need to put the luggage in your hand sideways, and you can open the door semi-automatically while holding the luggage in your hand.

In addition, since the door lower end pressing roller for making the door closely adhere to the refrigerator main body and the stopper mechanism are integrated, the mounting positions of both can be set at the same time.
Equipment work for the sliding door is very easy. Further, since the stopper mechanism that stops the door in the closed state does not act on the resin door roller that suspends the door, the resin door roller will not be worn by the operation of the stopper mechanism, and therefore the stopper mechanism will not work. Has a long life. Further, since the stopper mechanism including the foot-operated pedal is installed on the outer side portion of the lower edge of the refrigerator opening along with the door lower end pressing roller, it is hardly visible from the outside.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

The drawings show a case where the slide door opening / closing device of the present invention is applied to a large prefabricated refrigerator of an assembled type.

In this specification, front and rear and left and right refer to the left side of FIG. 1 and the right side of the same with reference to FIG. 1, and the left and right refer to the rear.

In the drawing, a rail (4) extending from the upper edge of the storage opening (2) to the right side is attached to the front wall of the refrigerator (1), and a pair of brackets is attached to the rail (4) at the upper end of the slide door (3). Door wheels (5) and (5) attached via (6) and (6) are placed, and the door (3) is slidable left and right.

The sliding door (3) is pressed against the outer surface of the peripheral portion of the opening (2) so as not to leak cold air inside the opening when it is closed, and the sliding door (3) is attached to the seal (4) of the refrigerator (1). ) Is equipped with a so-called semi-automatic slide mechanism (30) that constantly urges the slide door (3) in the opening direction to move the door (3) semi-automatically only in the opening direction.

On the outer edge of the bottom edge of the refrigerator (1) opening (2),
In order to press the slide door (3) against the refrigerator (1) side when closed, a pair of left and right frustoconical door lower edge pressing rollers (7) (8) are rotatably provided, and the left side pressing roller is used. The roller (7) is equipped with a stopper mechanism (10) for the slide door (3). The right pressing roller (8) only freely rotates about a vertical axis (not shown) attached to the substrate (11).

A rail shape having a rear downward slope (12a) at the lower end of the slide door (3), which engages with the pressing roller (7) in the closed state of the door (3) to prevent the door (3) from swinging. The door swing prevention member (12) is provided.

1 to 4 showing the details of the stopper mechanism (10), the left door lower end portion pressing roller (7) is a shaft holding member (7) provided on the substrate (11) on the floor surface (G). It is placed on the sliding member 13) via a sliding annular spacer (14), and the vertical shaft (15) of the roller (7) is held by the shaft holding member (13) so as to be able to move up and down. The vertical axis (15) is
The coil spring (17) housed in the space (22) inside the shaft holding member (13) constantly urges it upward. The vertical axis (15) has a cylindrical shape with the upper end (15a) closed, and the vertical axis (1
The upper end (15a) of 5) can be retracted from the top of the pressing roller (7) and also serves as a stopper for the door (3). On the upper end (15a) of the vertical shaft (15), there is provided a guide slanting surface (16) facing rightward and downward.

In the space portion (22) of the shaft holding member (13), the fixed shaft (18) is provided in a rising shape on the substrate (11),
The fixed shaft (18) is fitted with the coil spring (17), and the upper part of the fixed shaft (18) is inserted into the cylindrical vertical shaft (15) from below.

A pedal engaging plate (19) extending forward from the vertical shaft (15) is provided at the lower end of the vertical shaft (15), and a front end portion of the engaging plate (19) is provided with a tip end portion of a foot pedal (20). The foot pedal (20) is swingably attached to the front end of the base plate (11) via a hinge (21).

Further, the horizontal portion (12b) of the rail-shaped door swing prevention member (12) at the lower end of the slide door (3) engages with the stopper upper end portion (15a) of the vertical shaft (15) when the door (3) is closed. A door opening prevention claw (23) is provided in a downwardly projecting shape, and the door opening prevention claw (23) has a guide inclined surface (downward to the right) corresponding to the guide inclined surface (16) of the upper end portion (15a) of the vertical shaft. 24) is provided.

A pair of long holes (25) (25) for bolt insertion are provided on the left and right sides of the board (11), and the board (11) is attached to the floor surface (2) by two bolts (26) (26). It is attached to G) with adjustable position.

Semi-auto slide mechanism (30) for sliding door (3)
The details of are shown in FIG. In the figure, above the rail (4) on the front wall of the refrigerator (1), the pulley (3
1) and the chain sprocket (32) are attached, the wire (33) and the chain (34) are endlessly wound around them, and the end of the chain (34) is a chain spring (35). It is connected to one door suspension bracket (6) via. Also the chain
A hydraulic unit (36) is provided near the sprocket (32) member.

In this embodiment, when the slide door (1) of the refrigerator (1) is moved in the closing direction, the hydraulic unit (3
A piston (not shown) in 6) moves while compressing an internal coil spring (not shown), and a force for opening the door (1) is stored in the coil spring.

By the way, the sliding door (3) is slightly lowered when closed, and the lower edge of the sealing material (9) provided at the lower end of the sliding door (3) is brought into contact with the floor surface (G), and the refrigerator (1) is
The door (3) is pressed to the side so that the peripheral portion of the door (3) is brought into close contact with the outer surface of the peripheral portion of the storage opening (2). In this case, for example, as shown in FIG. )
Door pulling guide projections (41) (41) are provided in notches at two places on the left and right of the upper rail (4) that guides (5), and the tips of these are provided in the refrigerator (1). It is directed toward the main body. The upper edge of these guide projections (41) (41) is provided with left downward facing door descending guide surfaces (42) (42), and the upward roller stopping projections are provided at the respective tips. An upset (43) (43) is provided.

In the above description, when the slide door (1) is moved in the closing direction and the door opening prevention claw (23) at the lower edge of the slide door (1) reaches the vertical shaft (15) of the stopper mechanism (10), the guide is first provided. The inclined surface (24) is the guide inclined surface (1
6) is pressed against the vertical shaft (15) against the elastic force of the coil spring (17) so that the upper end (15a) of the vertical shaft sinks below the top of the pressing roller (7). . Further, when the pawl (23) crosses the upper end (15a) of the vertical shaft to the left, the vertical shaft (15) is lifted by the elastic force of the coil spring (17), and the upper end (15a) of the vertical shaft (15) is pressed down. The door (3) is stopped by projecting upward from the top of the roller (7) again and engaging with the claw (23).

Since the slide door (3) is always urged in the opening direction by the action of the semi-automatic slide mechanism (30), when the slide door (3) is opened and the foot pedal (20) is depressed, The shaft (15) is coil spring (1
It is pushed down against the resilience of 7), and the upper end of the vertical axis (15
The door (3) is disengaged from the door opening prevention claw (23).
Is unlocked. Therefore, when opening the slide door (3), it is not necessary to put the luggage in the hand sideways, and the door (3) can be opened semi-automatically while holding the luggage in the hand, which is very convenient. .

Since the door lower end pressing roller (7) for closely contacting the door (3) with the refrigerator main body and the stopper mechanism (10) are integrated, the setting positions of both of them should be set at the same time. Therefore, the installation work of the slide door (3) is very easy. Further, since the stopper mechanism (10) for stopping the doors (3) and (3) in the closed state does not act on the resin door rollers (5) and (5) that suspend the door (3), the stopper mechanism (10) ) Actuation of the resin door roller (5) (5)
The stopper mechanism (1
0) has a long life. The foot pedal (2
Since the stopper mechanism (10) provided with (0) is installed at the outer edge of the lower edge of the storage opening (2) of the refrigerator (1) together with the door lower end pressing roller (7), I barely see it, so it does not spoil the aesthetics of the refrigerator (1).

In addition, in the above embodiment, the case of applying the slide door opening / closing device of the present invention to the large prefabricated refrigerator of the assembled type is shown. The same applies to the sliding door in the above.

Effect of the Invention As described above, in the opening / closing device for the sliding door in the refrigerator according to the present invention, the frustoconical door lower end pressing roller is centered on the vertical axis at the outer edge of the lower edge of the refrigerator opening. Rails that are attached to the bottom of the slide door that is rotatably attached to the rail and that has a rearward downward sloping portion that engages with the pressing roller to prevent the door from swinging when the door is closed. -Shaped door swing prevention part is provided,
The vertical axis of the pressing roller can be raised and lowered,
The upper end of the vertical shaft is designed to be retractable from the top of the pressing roller so that it also functions as a door stopper.A foot-operated pedal that raises and lowers the vertical shaft is arranged in front of the pressing roller, and the lower end of the door is installed. When the door is closed, the door opening prevention claw that engages with the upper end of the vertical axis that also serves as a stopper is provided in a downward protruding shape.When opening the slide door, unlock the door with a foot-operated pedal. Since it is possible to open the door without having to put the baggage in your hand sideways, you can open the door with the baggage in your hand, which is very convenient.

Moreover, since the roller for pressing the lower end of the door and the stopper mechanism can be integrated, the mounting positions of the roller for pressing the lower end of the door and the stopper can be set at the same time.
Equipment work for the sliding door is very easy. Further, since the stopper mechanism that stops the door in the closed state does not act on the resin door roller that suspends the door, the resin door roller will not be worn by the operation of the stopper mechanism, and the stopper mechanism It has a very long life.

Moreover, since the stopper mechanism equipped with a foot-operated pedal can be installed at the lower end of the refrigerator opening together with the roller for pressing the lower end of the door, the structure is very simple, and therefore failure is unlikely to occur. .

In addition, since such a stopper mechanism is almost invisible from the outside, it does not spoil the aesthetics of the refrigerator,
It has the effect of being very well formed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is an enlarged sectional view of an essential part of a refrigerator equipped with the present invention, FIG. 2 is the same front view, FIG. 3 is the same plan view, and FIG. FIG. 5 is a front view of the entire refrigerator, FIG. 5 is a schematic perspective view of a mounting portion of a slide door of the refrigerator, and FIG. 6 is an enlarged perspective view of only a door hanging rail. (1) ... Refrigerator, (2) ... Storage opening, (3) ... Sliding door,
(4) ... Rail, (5) ... Door roller, (7) (8) ... Door lower end pressing roller, (10) ... Stopper mechanism, (12) ... Rail-shaped door rocking prevention member, (12a) ... Inclined part, (15) ... vertical axis, (15a) ... door stopper combined vertical axis upper end part, (20)
… Foot-operated pedal, (23)… Door opening prevention claw, (30)… Semi-auto slide mechanism.

Claims (1)

[Scope of utility model registration request] 1. A frustoconical door lower edge pressing roller (7) is rotatable around a vertical axis (15) at a portion of a refrigerator (1) or the like, which is closer to the outer edge of the lower edge of the opening (2). Attached to the lower end of the slide door (3), which is always biased in the opening direction,
When the door (3) is closed, it engages with the pressing roller (7) to prevent the door (3) from rocking.
A rail-like door swing prevention member (12) having a) is provided, the vertical shaft (15) of the pressing roller (7) is vertically movable, and the upper end (15a) of the vertical shaft (15) is provided. ) Is retractable from the top of the presser roller (7) so that it also serves as a door stopper, and a foot pedal (20) for raising and lowering the vertical shaft (15) is provided in front of the presser roller (7).
And a door opening prevention claw (23) that engages with the stopper upper end (15a) of the vertical shaft (15) when the door (3) is closed is provided at the lower end of the door (3) so as to project downward. Opening / closing device for sliding doors in refrigerators.