JPH112064A - Self-closing device for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily constitute a self-closing device for sliding door by combining a pulley having a spiral spring built therein with an oil damper to constitute a self-closing device body, and rotating the pulley by a wire rope. SOLUTION: A self-closing device body 2 is fixed to the upper horizontal frame B of an opening A in which a sliding door l is slid. The body 2 comprises a pulley 3 having a spiral spring built therein, a main gear 7 fixed to the pulley 3, a driven gear 8 fixed to an oil damper 6 only in reversely rotating direction, which is geared with the main gear, and a wire rope 9 wound on the pulley 3 several times which is extended and fixed between both side end parts of the sliding door 1. As the other device, the body 2 may be fixed to the sliding door 1, both ends of the wire rope 9 may be fixed to both vertical frames of the opening part A. When the sliding door 1 is thus moved in opening direction, the pulley 3 is normally rotated to accumulate energy in the spiral spring, and when the hand is released from the sliding door 1, the pulley 3 is reversely rotated, and regulated in rotating speed by the oil damper 6 to move the sliding door 1 in closing direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-closing device for a sliding door which has a function of automatically closing an opened sliding door and a function of slowing down a closing speed of the sliding door.

[0002]

2. Description of the Related Art In general, a conventional self-closing device having a function of automatically closing a sliding door is provided between a sliding door body and an opening frame by moving the sliding door in the opening direction in the closing direction. Thus, the sliding door is automatically closed by providing a wire rope, a belt, or the like, which is pulled by a coil spring or a spiral spring to which the sliding door is provided.

However, in a conventional self-closing sliding door in which a force in the closing direction is applied by the elasticity of a coil spring or a spring, the force in the closing direction with respect to the sliding door is sequentially added as the opening degree of the sliding door body increases. Therefore, there is a disadvantage that the movement of the sliding door in the opening direction is heavy, and conversely, the traveling speed of the sliding door in the closing direction may be increased, and noise or damage due to impact on the vertical frame at the time of closing, or He had a high possibility of injury to his fingers and body due to the collision.

For this reason, from the viewpoint of safety, it is necessary to incorporate a braking mechanism for slowing the traveling speed of the sliding door in the closing direction into the self-closing device, or to install the braking mechanism separately from the self-closing device. In such a case, the self-closing device itself is increased in size, and in the case of a method of separately installing the device, the entire arrangement structure is complicated, and the installation work is troublesome.

In addition, when the braking mechanism is an oil type, there is a risk of oil leakage, so that the components must be refined, robust and oil-resistant, and the viscosity of the oil changes depending on the temperature, and the operating time is reduced. In addition, in the case of the air system, since the outside air is sucked into the device, the device is likely to be affected by dust and moisture, which not only has a problem in the durability of the device, but also During operation, it has the disadvantage that the noise of the compressed air emitted outside the device is loud.

[0006]

The problem to be solved is that the conventional self-closing device has a built-in braking mechanism, so that the self-closing device itself is increased in size, and the number of parts is large in the case of a separately installed system. The mounting operation required a lot of trouble, and the structure of the entire self-closing device had to be complicated and expensive.

[0007]

According to the present invention, there is provided a main body formed so as to be attachable to an appropriate position of a horizontal frame of an opening, a shaft body provided in the main body and having one end of a spiral spring fixed thereto, A pulley fixed to the other end of a spiral spring that is rotatably mounted and accumulates repulsive force in the opposite direction as the sliding door moves in the opening direction, a main gear fixed to the pulley and rotating together with the pulley, An oil damper is provided with a slave gear that rotates in the opposite direction while being meshed with the main gear, and is provided on the main body adjacent to the pulley to control the repulsive force of the spiral spring.
It consists of a wire rope whose both ends are fixed to a sliding door and whose intermediate part is wound around a pulley once or an appropriate number of times and stretched.

Also, a main body formed so as to be attachable to an appropriate position of the sliding door, a shaft body provided on the main body and having one end of a spiral spring fixed thereto, rotatably mounted on the shaft body, and adapted to open and close the sliding door in the opening direction. A pulley that fixes the other end of the spiral spring that accumulates repulsive force in the opposite direction with the movement, a main gear that is fixed to the pulley and rotates with the pulley, and a slave gear that meshes with the main gear and rotates in the reverse direction An oil damper mounted on the body adjacent to the pulley to control the repulsive force of the spiral spring, and both ends are fixed to the vertical frames on both sides of the opening, and the intermediate part is wound around the pulley one or an appropriate number of times to tension it. It consists of an installed wire rope.

[0009]

According to the self-closing device of the present invention, the pulley is rotated by the wire rope wound and stretched one to several times as the sliding door moves in the opening direction, and the spiral spring is moved in the closing direction by the spiral spring. It is installed so that resilience is given,
The oil damper is set in a free state so that no control force is generated when the sliding door moves in the opening direction.

That is, when the sliding door is moved in the opening direction,
The pulley is rotated by the stretched wire rope,
Repulsive force in the closing direction is gradually applied to the spiral spring,
At this time, the oil damper linked to the pulley is in a free state, and there is no problem in opening the sliding door.

When the movement of the sliding door in the opening direction is completed, the repulsive force in the closing direction accumulated in the spiral spring is transmitted to the pulley, and imparts a turning force to the pulley in the closing direction. The sliding door is moved in the closing direction along a wire rope which is stretched by being wound one or an appropriate number of times by rotation.

At this time, an oil damper linked to the pulley controls the rotational force and moves the sliding door at a proper speed in the closing direction.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sliding door according to an embodiment of the present invention;

Reference numeral 3 denotes a pulley rotatably mounted on a shaft 4 provided on the main body 2, one end of which is fixed to the shaft 4 and the other end of which is fixed to the pulley 3, with the sliding door 1 moving in the opening direction. A spiral spring 5 that accumulates repulsive force in the opposite direction is built in.

Reference numeral 6 denotes an oil damper provided on the main body 2 adjacent to the pulley 3, which is installed so as to be free when the sliding door 1 moves in the opening direction, and is fixed to the pulley 3. A slave gear 8 meshing with the main gear 7 and rotating in the reverse direction is attached.

Reference numeral 9 denotes a wire rope which is stretched by fixing both ends to the open side end and the closed side end of the sliding door 1, respectively. The inside of the main body 2 is guided through guide holes 10 provided on both sides of the main body 2. And wound around the pulley 3 once or an appropriate number of times.

FIGS. 6 and 7 show another embodiment, in which the body 2 of the self-closing device is mounted at an appropriate position above the sliding door 1. Both ends of the wire rope 9 are vertically framed on both sides of the opening A. C, the wire rope 9 is introduced into the inside of the main body 2 through the guide holes 10 provided on both sides of the main body 2 and wound around the pulley 3 one or an appropriate number of times. This is the same as the above embodiment, and the operation and effect are not changed.

[0018]

As described above, according to the present invention, the repulsive force in the closing direction can be automatically accumulated in the pulley in which the stretched wire rope is wound one or more times by moving the sliding door in the opening direction. The movement of the sliding door in the closing direction due to this repulsive force is controlled by an oil damper adjacent to the pulley and linked to the pulley.The structure is simple, compact, and does not require high precision. Since it can be provided at low cost and can be configured flat, there is no problem in mounting, and it can be used for any of the hanging type and the getting off type sliding doors, which is extremely efficient.

[Brief description of the drawings]

FIG. 1 is a front view of an open state of a sliding door.

FIG. 2 is a front view of the sliding door in a closed state.

FIG. 3 is a front view showing a partial cross section of a main part.

FIG. 4 is a plan view showing a partial cross section of a main part.

FIG. 5 is an enlarged plan view of a main part in section.

FIG. 6 is a front view showing an open state of a sliding door in another embodiment.

FIG. 7 is a front view of another embodiment of the sliding door in an open state.

[Explanation of symbols]

 Reference Signs List A Opening B Horizontal frame C Vertical frame 1 Sliding door 2 Main body 3 Pulley 4 Shaft 5 Spiral spring 6 Oil damper 7 Main gear 8 Follower gear 9 Wire rope 10 Guide hole

Claims (2)

[Claims] 1. A main body (2) formed so that it can be attached to an appropriate position of a horizontal frame B of an opening A, and a shaft body (4) provided in the main body (2) and fixed at one end of a spiral spring (5). And a pulley (not shown) fixed to the other end of a spiral spring (5) rotatably attached to the shaft (4) and accumulating a repulsive force in the opposite direction as the sliding door (1) moves in the opening direction. 3), a main gear (7) fixed to the pulley (3) and rotating together with the pulley (3), and a driven gear (8) meshing with the main gear (7) and rotating in the reverse direction are attached. An oil damper (6) provided on the body (2) adjacent to 3) for controlling the repulsive force of the spiral spring (5), and sliding doors (1) at both ends
A self-closing device for a sliding door, comprising a wire rope (9) fixed to the pulley (3) and wound around the pulley (3) one or more times. 2. A body (2) formed so as to be attachable to a sliding door (1) in a proper position, a shaft (4) provided on the body (2) and having one end of a spiral spring (5) fixed thereto. A pulley (3) fixed to the other end of a spiral spring (5) rotatably mounted on the shaft (4) and accumulating a repulsive force in the opposite direction as the sliding door (1) moves in the opening direction; A main gear (7) fixed to the pulley (3) and rotating together with the pulley (3), and a driven gear (8) meshing with the main gear (7) and rotating in the reverse direction are attached to the pulley (3). An oil damper (6) provided adjacently to the main body (2) to control the repulsive force of the spiral spring (5); and both ends are fixed to the vertical frames C on both sides of the opening A, and the intermediate portion is a pulley (3). A self-closing device for a sliding door, comprising a wire rope (9) wound and stretched one or more suitable times.