JPH0627610B2 - Door opening / closing device for storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a door opening and closing device for a storage having an upper opening door that opens and closes an upper opening of a main body by a hinge device.

(B) Conventional technology A storage body provided with a storage main body having an opening on the upper surface, an upper opening door that closes the upper opening of the main body, and a hinge device that pivotally supports the door with respect to the main body. As a technology that has a structure that holds the door in a half-opened state,
It is disclosed in Japanese Patent No. 4275.

In this technique, a plurality of doors are provided by attaching an elastic protrusion having one of a main body side and a door side with an engaging projection, and the other with an engaging recess formed with a plurality of engaging concave portions for stepwise engagement of the engaging projection. The open state of the stage can be maintained.

In this conventional technology, impact is added stepwise when opening and closing the door, lack of smoothness in opening and closing, and the opening position of the door is determined, so it is necessary to take care to open the door just to take that fixed position, Moreover, the opening position of the door cannot be set in too many stages. In addition, a spring must be used structurally, and in the case of a heavy door such as a heat insulating door of a freezer, the component structure is complicated and it is expensive.

In consideration of these points, the applicant has proposed a door opening / closing device which can improve the usability by arbitrarily opening the door and has a simple component structure. No. 247915 (Japanese Patent Laid-Open No. 63-220072) has already been applied for a patent.

The patent application is similar to a part of the embodiments of the present application, and will be described with reference to the embodiments of the present application, in a storage having an upper opening door (2) that opens and closes the upper opening of the main body with the hinge device (3). , The door (2) is a gasket (28) that abuts the peripheral edge of the opening.
The hinge device has a sliding shaft (13) protruding parallel to the hinge shaft (6) which is the center of rotation of the door, and the sliding shaft reciprocates as the door rotates. A sliding groove (15) is provided, and the sliding groove is equal to or slightly larger than the outer diameter of the sliding shaft at the closed position and the fully opened position of the door, and the sliding shaft reciprocates between the two positions. It is a wall that is elastically deformed by the accompanying strong action force. And the difference from the example of the present application is that
4) is circular, and the circular hinge shaft (6) is inserted without any rattling.

In this configuration, the sliding shaft (1
3) moves while pushing the sliding groove (15) wide. When the door is stopped in the middle of opening / closing, when the opening / closing operation is stopped, the sliding shaft is held in a state in which the sliding groove is elastically deformed at the abutting portion, so that the door stops on the spot. When the door is further moved, the sliding shaft moves while elastically deforming the sliding groove.

(C) Problems to be solved by the invention In the configuration of the above-mentioned patent application made by the applicant, since the Hindi shaft is inserted in the Hindi hole without rattling, a gasket for sealing between the door and the main body ( As for 28), the edge of the hinge device side may be rubbed when the door is closed, or it may be caught and deformed or damaged by being caught, resulting in poor sealing between the door and the main body.

In view of such a problem, the present invention rotates the door in a slightly raised state when closing the door to ensure that the gasket closely adheres to the main body when fully closed, and the gasket remains twisted when the door is closed. Therefore, a technical problem is to solve the problem that the gasket is twisted and deformed over a long period of time due to the close contact with the main body, resulting in poor sealing effect.

(D) Means for Solving the Problems Means for solving the above problems will be described below based on Examples.

The present invention relates to a storage having an upper opening door that is pivotally supported by a hinge device and that opens and closes an upper surface opening of the main body, wherein the door has a seal member that abuts against the opening periphery, and the hinge device rotates the door. A hinge plate that has a hinge shaft that serves as an axis and a sliding shaft that is formed in parallel with the hinge shaft and that is mounted on the main body side, a hinge hole through which the hinge shaft is inserted, and a reciprocating motion with respect to the sliding shaft. And a hinge receiving member mounted on the door side, and sliding so that the edge wall of the intermediate portion is elastically deformed by the contact of the sliding shaft with the opening / closing operation of the door. The groove is formed so that the width of the middle portion is smaller than the width of both ends thereof, and the hinge hole is provided with a door opening / closing device for a storage which is formed in a shape having play with respect to the hinge shaft.

(E) Action The sliding shaft (13) moves to the sliding groove (1
Move while pushing the wall of 5). When stopping the door (2) during opening and closing, when the opening and closing operation is stopped, the sliding shaft (13) is held with the sliding groove (15) elastically deformed at the abutting part, so the door (2) Stops on the spot. When the door is further moved, the sliding shaft moves while elastically deforming the sliding groove. door
When closing (2), the resistance between the sliding shaft and the sliding groove is large enough so that the hinge shaft is located at the lower end of the hinge hole and rotates with the door (2) slightly raised. For this reason, the gasket on the Hinge side moves away from the main body, and a large twist of the gasket due to the closing operation of the door does not occur. When the door approaches the closing position, the resistance of the sliding shaft due to the sliding groove suddenly drops, so that the door slightly drops toward the main body and the gasket comes into close contact with the main body.

(F) Example An example of the present invention will be described with reference to the drawings. (1) is a storage body as a freezer, the top opening of which is closed by an upper opening door (2) rotatably supported by a hinge device (3) provided on one side of the body (1). There is. The present invention is characterized by the hinge device (3), and the configuration thereof will be described below. (Four)
Is a hinge plate fixed to the rear ends of the left and right side walls of the main body (1) with screws (5), and has a hinge shaft (6) projecting in a substantially horizontal state toward the left and right sides of the door (2) at the upper part. (7) is the door (2)
The hinge caps attached to the rear ends of the left and right side walls of the outer skin (12) of the door cover (12) are provided at the rear edges of the left and right side walls of the door skin (12), and the flanges (8 ) Is retained and is retained in the recess (10). (9) is a Hindi reinforcement plate that is attached to the inner surface of the rear wall of the door (12) by welding.
Secure (7) with screws (11). (13) is Hindi shaft (6)
It is a sliding shaft that is attached to the hinge plate (4) so as to project substantially parallel to it. (14) and (15) are Hindi caps
There are a hinge hole and a sliding groove respectively provided in (7).
(15) has a circular arc shape centering on the hinge hole (14), and the width of this groove is such that the sliding shaft (13) is at the beginning (16) and the end (17) of the groove (15).
The outer diameter of the sliding shaft (13) is equal to or slightly larger than the outer diameter of the sliding shaft (13), and is slightly smaller than the outer diameter of the sliding shaft (13) between the ends (16) and (17). It is formed so as to be elastically deformed by acting force. For this reason, the hind cap (7) is molded from a synthetic resin that causes this elastic deformation, and it is preferable that the hind cap (7) has excellent wear resistance, and polyacetal or polyamide resin is used.

For the relationship between the hinge shaft (6) and the hinge hole (14) and the relationship between the sliding shaft (13) and the sliding groove (15), see the door (2).
The door (2) slightly drops toward the main body (1) when it reaches the position just before closing when the door rotates completely from the open position to the door (2)
Body of gasket (28) attached to the periphery of the back of the
It is a floating relationship that achieves sufficient contact with (1).
This will be explained in more detail. Hindi hole
Reference numeral (14) is an elongated hole extending in the vertical direction when the door (2) is in a closed state, and the hinge shaft (6) can easily move up and down in the elongated hole. Also, the starting end (16) of the sliding groove (15)
The size of the starting end (16) is determined so that the side (29) of the door (2) on the Hinge device side can be slightly moved downward when the sliding shaft (13) is inserted into the sliding shaft (13). The door outer plate (12) is formed by bending a steel plate to form front, rear, left and right side walls and flanges (25), and the notches (19) (20) formed in the corners on the left and right of the front wall are corner caps, respectively. Covered in (21). The corner cap (21) is a molded product of soft synthetic resin, and has elastic claws (2) that are elastically deformed and inserted into the cutouts (19) and (20) and locked at the periphery of the cutouts.
2) and flanges that abut the front and left and right side surfaces of the door outer plate (12).
(23) and (24) are integrally formed with the upper surface of the door outer plate (12) and the flanges (26) and (27) that come into contact with the lower surface of the lower folding surface flange (25). Foaming heat insulating material is filled in the space behind the door (2) door outer plate (12) by in-situ foaming and adheres to maintain strength. After this foaming, a gasket (28) is attached to the door inner plate (18) and the peripheral edge. Since the hinge caps (7) are attached to the left and right rear ends of the door outer plate (12), they also act as reinforcements for the corners of the left and right side walls of the door outer plate (12) and the rear wall. ) Acts to prevent twisting.

In the above-mentioned structure, the door (2) rotates about the hinge shaft (6) and the hinge hole (14), and when closed, the sliding shaft (1
3) is located at the starting end (16) of the sliding groove (15). When the door (2) is fully opened, the sliding shaft (13) is the end of the sliding groove (15).
Located at (17). Sliding shaft (13) when door (2) is fully open
Is restricted by the sliding groove (15), the terminal end (17) also acts as a stopper. During the process of fully closing and opening the door (2), the sliding shaft (13) is opened and closed while receiving strong frictional force on the wall of the sliding groove (15), opening and closing the door (2). When the door is stopped halfway, the door (2) is held in that state. At the end (17) and the start (16), considering the prevention of deterioration of the hinge cap (7), there is little or no elastic deformation of the sliding groove (15) by the sliding shaft (13). It is

In the above operation, a particularly important point is when the door (2) is rotated from the open position to the closed position. That is, when the door (2) as shown in FIG. 5 is fully opened, the sliding shaft (13) moves into the sliding groove (1
Located at the end (17) of 5), the hinge shaft (6) is close to one end of the hinge hole (14) (upper end when the door is closed). When the door (2) is rotated in this direction in the closing direction, the frictional resistance between the sliding shaft (13) and the sliding groove (15) is more than that between the hinge shaft (6) and the hinge hole (14). Since the door (2) is large, the sliding shaft
Rotate slightly so that the hinge shaft (6) moves to the other end of the hinge hole (14) (lower end when the door is closed) around the (13), and further rotate the door (2) in the closing direction. Then, the state shown in FIG. 6 is obtained. Sliding shaft (13) when approaching immediately before the door (2) is closed from this state to the closed position shown by the chain double-dashed line in Fig. 7 (this state is shown at the solid line position in the same figure)
Starts to enter the starting end (16) of the sliding groove (15), the large frictional resistance of the sliding shaft (13), which had been received by the sliding groove (15) until then, decreases sharply and the door (2 ) Slightly falls toward the main body (1), so that the gasket (28) adheres sufficiently to the main body (1), and in this state, the hinge shaft (6) is located at the other end of the hinge hole (14), that is, at the upper end. The moving shaft (13) is located in the starting end (16) of the sliding groove (15). As is clear from the above operation, in the solid line state of FIG. 7, the hinge shaft (6) is located at the lower end of the hinge hole (14) and the side (29) of the door (2) on the hinge device (3) side is the main body ( The gasket (28) is in a state of being moved upward by the dimension relationship of the long hole of the Hinge hole (14) with respect to 1).
Is in a state of being slightly floated from the main body (1) or lightly contacting the main body (1). Therefore, when the door (2) is closed, the gasket (28) is not caught on the upper end of the main body (1) and is not twisted or damaged.

When the operation of opening the door (2) is changed from the closed state of the door (2) as shown by the chain double-dashed line in FIG. 7, the sliding shaft (13) immediately enters the narrow part of the sliding groove (15) and the above-mentioned. The door (2) is opened while receiving such strong frictional resistance. FIG. 8 shows a state in which the door is substantially half opened. Hindi shaft (6) when opening the door (2)
The gasket (28) is not pressed any more than the position where it is located at the upper end of the hinge hole (14). Since it is when the door (2) is closed that the gasket (28) is twisted and kept in that state for a long time, the twist when the door (2) is opened is not a serious problem.

(G) Effect of the Invention According to the present invention, since the sliding shaft elastically deforms the edge wall of the middle portion of the sliding groove with the opening / closing operation of the door, even if the opening / closing operation of the door is stopped halfway, this elastic deformation is caused. It is possible to maintain the door in that state (stopped state) due to the restoring force of
The operability of the door is improved. At this time, since a separate part such as a spring is unnecessary, the structure of the hinge device can be simplified. Also, since the sliding shaft elastically deforms the edge wall in the middle of the sliding groove and there is play between the hinge shaft and the hinge hole, the sliding groove elastically deforms when the door approaches the closed position. As it acts as a resistance against the sliding shaft and makes this sliding shaft function as a rotating shaft, move the door slightly above the main body so that the hinge shaft moves by the amount of play in the hinge hole. As a result, there is no problem that the seal member is twisted at the peripheral edge portion of the upper surface opening of the main body and twisted in the seal member, and thus the seal failure of the seal member can be prevented.

[Brief description of drawings]

Each drawing shows an embodiment of the present invention, FIG. 1 is an exploded perspective view of a hinge device, FIG. 2 is an exploded perspective view of a hinge receiving member and a door outer plate corner portion, and FIG. A cross-sectional view, FIG. 4 is a vertical side view of the hinge device, FIG. 5 is a side view of the hinge device in a state where the door is fully opened, FIG. 6 is a side view of the hinge device in the middle of closing the door, and FIG. FIG. 8 is a side view of the hinge device portion when the door is closed and immediately before the door is closed, FIG. 8 is a side view of the hinge device portion when the door is being opened, FIG. 9 is a front perspective view of the door outer plate, and FIG. 10 is a corner cap. FIG. 11 is a cross-sectional view of the door outer plate of the corner cap portion, and FIG. 12 is a front perspective view of the storage. (1) …… Main body of storage, (2) …… Opening door, (3) …… Hinji device, (6) …… Hinji shaft, (7) …… Hinji receiving member,
(13) …… Sliding shaft, (14) …… Hind hole, (15) …… Sliding groove, (28) …… Gasket.

Claims (1)

[Claims] 1. A storage having an upper opening door that is pivotally supported by a hinge device and that opens and closes an upper surface opening of the main body, wherein the door has a seal member that abuts against the opening peripheral edge, and the hinge device is a door rotation member. A hinge plate having a hinge shaft as a moving axis and a sliding shaft formed in parallel with the hinge shaft and mounted on the main body side, a hinge hole through which the hinge shaft is inserted, and reciprocating motion with respect to the sliding shaft. And a hinge receiving member mounted on the door side so that the edge wall of the intermediate portion is elastically deformed by the contact of the sliding shaft with the opening / closing operation of the door. The door opening / closing device for a storage characterized in that the moving groove is formed such that the width of the intermediate portion is smaller than the width of both end portions thereof, and the hind hole has a shape having a play with respect to the hind shaft. .