JP2005113663A - Automatic closing device for sliding door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact and inexpensive automatic closing device for a sliding door, having a simple structure. <P>SOLUTION: This device has a pulley 2 for incorporating a spiral spring 5 for storing resiliency by the movement in the opening direction of the sliding door 4, in a storage body 1 arranged in a proper place of the sliding door 4 or a frame of an opening part A, and a control pulley 7 corresponding to this pulley, and is composed of a wire 8 for adjacently arranging a oil damper 6 for controlling the resiliency of the spiral spring 5, having one end fixed to the pulley 7, having an intermediate part wound in large numbers on the pulley 7, and having the tip linked to a proper place of the frame of the opening part A or the sliding door 4, being pulled out of the storage body 1, after being wound one round or the proper number of rounds on the control pulley 7 of the oil damper 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a self-closing device for a sliding door that has a function of automatically closing an open sliding door and a function for making the closing speed of the sliding door appropriate.

  Generally, a conventional self-closing device having a function of automatically closing a sliding door is a coil spring in which a force in the closing direction is applied between the sliding door and the opening frame by the movement of the sliding door in the opening direction. Etc., and the sliding door is pulled by this, and the sliding door is automatically closed.

  However, as the degree of opening of the sliding door increases, the force in the closing direction against the sliding door is sequentially added to increase the traveling speed in the closing direction of the sliding door, and noise due to the impact on the frame of the opening at the time of closing. In order to prevent the traveling speed in the closing direction of the sliding door from increasing, even if the degree of opening of the sliding door increases, a special damper according to the stroke of the coil spring is provided. (See, for example, Patent Document 1).

Further, as an improvement on the above-mentioned conventional product, there is provided a pulley incorporating a spiral spring that accumulates a repulsive force in the reverse direction as the sliding door moves in the opening direction, and an oil damper that controls the repulsive force of the spiral spring. By providing, the rotation of both is linked by a gear, and both ends of the wire wound around the pulley are attached to an opening frame or a sliding door and stretched, and the sliding door is opened and closed along the stretched wire. (See, for example, Patent Document 2).
JP-A-10-196212 Japanese Patent Laid-Open No. 11-2064

  The problem to be solved is that in the self-closing device in which a force in the closing direction is applied by elasticity such as a simple coil spring described in Patent Document 1, the force in the closing direction increases as the degree of opening of the sliding door increases. Will be added sequentially, and the traveling speed in the closing direction of the sliding door will increase, the impact on the opening frame at closing will be large, and there will be a lot of risk of injury to the fingers and body due to noise, damage, or collision Therefore, it was necessary to provide a special damper according to the stroke such as a coil spring.

  In addition, in the conventional device described in Patent Document 2, since the pulley including the spiral spring and the oil damper that controls the repulsive force of the spiral spring are connected by a gear, the positional relationship between the two is accurately set. In addition, it is necessary to stretch the wire along the opening and closing direction of the sliding door, the length of the wire to be stretched differs depending on the amount of movement of the sliding door, and delicate tension adjustment for wire stretching Was indispensable.

  The present invention includes a container installed in a proper position of a sliding door, a shaft provided in the container, a pulley rotatably attached to the shaft, a built-in pulley, an inner end as a shaft, and an outer end. Are installed on the pulley, and the spiral spring is set to accumulate the repulsive force in the reverse direction as the sliding door moves in the opening direction, and is provided adjacent to the pulley to control the repulsive force of the spiral spring Oil damper, control pulley provided on the oil damper, one end fixed to the pulley, the middle part is wound around the pulley many times, and it is wound around the oil damper control pulley once or an appropriate number of times and pulled out from the container, etc. It consists of a wire whose end is connected to the frame of the opening.

  In addition, a container installed at an appropriate position in the frame of the opening, a shaft body provided on the container, a pulley rotatably attached to the shaft body, and a built-in pulley, with the inner end serving as a shaft body, A spiral spring set to fix the end to each pulley and accumulate the repulsive force in the reverse direction as the sliding door moves in the opening direction, and adjacent to the pulley to control the repulsive force of the spiral spring An oil damper, a control pulley provided on the oil damper, one end fixed to the pulley and the intermediate part wound around the pulley a number of times, and wound around the oil damper control pulley once or an appropriate number of times and pulled out from the container, It consists of a wire connected to the right place of the sliding door.

  An auxiliary pulley that changes the direction of the traveling wire may be provided between the pulley and the control pulley, and at an appropriate position of the container between the control pulley and the container.

  Furthermore, the shaft body in which the inner end of the spiral spring is fixed may be configured to be rotatable with respect to the housing body.

  As the sliding door moves in the opening direction, the container of the self-closing device of the present invention pulls out the wire wound around the pulley a number of times, rotates the pulley, and gives the spiral spring a repulsive force in the closing direction. It is installed at a proper position of the sliding door or at any position above and below the opening frame, so that the oil damper is free so that no control force is generated when moving the sliding door in the opening direction. Set to.

  When the sliding door is moved in the opening direction, the wire whose tip is connected to the frame of the opening corresponding to the container or the appropriate position of the sliding door is pulled out, and this causes the pulley to rotate and the repulsive force in the closing direction to the spiral spring. The sliding door is opened while being gradually applied, and 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 the pulley moves in the closing direction. The sliding door is pulled in the closing direction by winding the wire drawn by the rotation of the pulley and winding the wire around the pulley.

  At this time, since the wire is wound once or an appropriate number of times on the control pulley of the oil damper, the traveling speed of the wire wound by the rotational force of the pulley is controlled by the control pulley, and the sliding door is closed at an appropriate speed. It can be moved in the direction.

  In addition, an auxiliary pulley that changes the direction of the traveling wire is provided between the pulley and the control pulley, and at an appropriate position of the container between the control pulley and the container, thereby preventing the overlapping of the wires. Moreover, it is possible to change the direction without generating noise.

  Furthermore, the shaft body with the inner end of the spiral spring fixed can be configured to rotate with respect to the container, so that the spiral spring can be tightened or loosened by rotating it as necessary. Even when the opening widths of the doors are different, the traction force in the closing direction can be easily adjusted, and an appropriate sliding door closing speed can be obtained.

  As described above, the present invention does not require high-precision construction such as meshing of gears and cylinders, so that the structure is simple, can be downsized, can be provided at low cost, and can be provided in a flat configuration. Furthermore, it can be used for both a hanging type and a getting off type sliding door, which is extremely efficient.

  In carrying out the present invention, the housing 1 of the self-closing device is provided with a shaft body 3 to which a pulley 2 is rotatably attached. The pulley 2 has an inner end at the shaft body 3 and an outer end at the pulley 2. A spiral spring 5 that accumulates a repulsive force in the opposite direction as the sliding door 4 moves in the opening direction is fixed, and is adjacent to the pulley 2 to move the sliding door 4 in the opening direction. An oil damper 6 set so as to be in a free state is installed, and a control pulley 7 corresponding to the pulley 2 is attached to the oil damper 6.

  The wire 8 having one end attached to the pulley 2 is wound many times in the direction in which the repulsive force is accumulated on the spiral spring 5 incorporated by pulling out the wire 8, and the control pulley 7 provided adjacent to the pulley 2 is The wire 8 drawn out from the pulley 2 is wound once or an appropriate number of times, and is drawn out from the window hole 9 of the container 1, and the container 1 of the self-closing device thus configured is 4 is attached to the upper inner surface of the open end of the housing 4 and the tip of the wire 8 drawn out from the window hole 9 of the housing 1 is accommodated when the sliding door 4 of the horizontal frame B above the opening A is closed. It is preferable to connect to a hook 11 attached at a position facing the body 1.

  In the embodiment shown in FIGS. 1 to 4, the container 1 of the self-closing device is shown as a box having a horizontal rectangular shape, and the container 1 is externally attached to the upper inner surface of the open end of the sliding door 2. The housing 1 is provided with a shaft 3 that can be rotated with respect to the housing 1, and a pulley 4 is rotatably attached to the shaft 3. And a spiral spring 5 that stores the repulsive force in the reverse direction as the sliding door 2 moves in the opening direction.

  An oil damper 6 set so as to be free when the sliding door 2 moves in the opening direction is installed adjacent to the pulley 4, and a control pulley 7 corresponding to the pulley 4 is attached to the oil damper 6, and A wire 8 having one end attached to the pulley 4 is wound many times in a direction in which a repulsive force is accumulated on the spiral spring 5 incorporated by pulling out the wire 8.

  The control pulley 7 provided adjacent to the pulley 4 is wound with the wire 8 drawn out from the pulley 4 once or an appropriate number of times, and the tip is pulled out from the window hole 9 of the container 1, and the tip is The horizontal frame B above the opening A is connected to a hook 11 attached at a position facing the container 1 when the sliding door 2 is closed.

  Auxiliary pulley 10 is provided at a suitable position of container 1 for changing the direction of wire 8 extending from pulley 4 to control pulley 7 and wire 8 drawn out from control pulley 7 through window hole 9 of container 1. ing.

  5 to FIG. 6, the container 1 of the self-closing device is shown as a box having a vertical rectangular shape, and the container 1 is externally attached to the upper inner surface of the open end of the sliding door 2. In this system, a pulley 4 having a spiral spring 5 built in is provided below the container 1, and an oil damper 6 to which a control pulley 7 corresponding to the pulley 4 is attached is installed above the pulley 4. The configuration of the pulley 4, the spiral spring 5, the oil damper 6, etc. is the same except that the auxiliary pulley 10 for changing the direction of 8 is excluded, and the sliding door 2 is opened and closed in the same manner as in the first embodiment. Is called.

  In the embodiment of the drawings, the container 1 is a rectangular box and is externally attached to the upper inner surface of the sliding door 2. However, the box-like storage is provided at an appropriate position of the sliding door 2 or the frame of the opening A. Even if the body 1 is embedded, or the housing 1 is formed directly at an appropriate position of the sliding door 2 or the frame of the opening A, the sliding door 2 can be opened and closed without any trouble.

It is a front view of the closed state of a sliding door. It is a front view of the open state of a sliding door. It is the front view made into the partial cross section of the principal part. It is the top view made into the partial cross section of the principal part. It is a front view of the closed state of the sliding door in another Example. It is the front view made into the partial cross section of the principal part in another Example.

Explanation of symbols

A Opening B Horizontal frame 1 Container 2 Pulley 3 Shaft 4 Sliding door 5 Spiral spring 6 Oil damper 7 Control pulley 8 Wire 9 Window hole 10 Auxiliary pulley 11 Hook

Claims (4)

  A container (1) installed at an appropriate position of the sliding door (4), a shaft (3) provided in the container (1), and a pulley (2) rotatably attached to the shaft (3); Built in the pulley (2), the inner end is fixed to the shaft body (3), the outer end is fixed to the pulley (2), and the repulsive force in the reverse direction is generated as the sliding door (4) moves in the opening direction. A spiral spring (5) set to accumulate and an oil damper (6) provided adjacent to the pulley (2) for controlling the repulsive force of the spiral spring (5), and an oil damper (6) The control pulley (7) and one end are fixed to the pulley (2) and the intermediate portion is wound around the pulley (2) many times, and the control pulley (7) of the oil damper (6) is wound once or an appropriate number of times. A wire (8) withdrawn from the housing (1) and connected to the frame of the opening A at the other end; Self-closing device of Ranaru sliding door.   A container (1) installed at an appropriate position of the frame of the opening A, a shaft body (3) provided in the container (1), and a pulley (2) rotatably attached to the shaft body (3) Built in the pulley (2), the inner end is fixed to the shaft body (3), the outer end is fixed to the pulley (2), and the repulsive force in the reverse direction as the sliding door (4) moves in the opening direction. A spiral spring (5) set to store the oil, an oil damper (6) provided adjacent to the pulley (2) and controlling the repulsive force of the spiral spring (5), and an oil damper (6) The control pulley (7) and the negative end are fixed to the pulley (2), the intermediate part is wound around the pulley (2) many times, and the control pulley (7) of the oil damper (6) is wound once or an appropriate number of times. A wire (8) wound around and pulled out from the container (1) and connected to the appropriate position of the sliding door (4); Self-closing device of Ranaru sliding door.   The auxiliary pulley (10) for changing the direction of the traveling wire (8) is accommodated between the pulley (2) and the control pulley (7), and while being pulled out from the control pulley (7) and the container (1). The self-closing device for a sliding door according to claim 1 or 2 provided at a proper position of the body (1).   The self-closing device for a sliding door according to claim 1 or 2, wherein the shaft body (3) to which the inner end of the spiral spring (5) is fixed is configured to be rotatable with respect to the housing body (1).

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