JPH0744707Y2 - Self-closing sliding door braking device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braking device for a sliding door of an upper hanging type which is automatically closed.

[0002]

2. Description of the Related Art Conventionally, as a self-closing sliding door, a coil spring, an air cylinder or the like is provided between a sliding door main body and a body to which a force in the closing direction is applied by the movement of the sliding door in the opening direction. The sliding door is usually configured to be automatically closed.

However, in the conventional self-closing sliding door, as the degree of opening of the sliding door body increases, a force in the closing direction is sequentially and additively applied to the sliding door body, so that the sliding door body opens in the opening direction. At the same time, there is a drawback that the movement to the body becomes heavy, but the movement in the closing direction is fast, and there is a possibility that noise and damage due to impact on the vertical frame at the time of closing, or injury to fingers and body due to collision are likely. there were.

Therefore, a device for buffering the impact on the vertical frame when the sliding door body is closed is considered.
As disclosed in JP-A-22070, an operating lever having a roller at its tip is provided at an upper end of a sliding door so that the lever can be raised and lowered, and a hook plate for catching the roller of the operating lever is attached to the opposite body. Therefore, the impact lever at the time of closing is to be buffered by catching the operating lever in the fallen state with the hook plate and setting it in the standing state.

However, in the case of this system, there is no change in the traveling speed of the sliding door main body just before the sliding door main body is closed, and the cushioning function is activated only before the sliding door main body is closed. It is effective for maintaining the air conditioning effect in the room, and although it has the effect of mitigating the impact on the vertical frame and preventing the occurrence of noise and damage, the running speed is fast until the sliding door body is closed, There was still the potential for physical injury in the event of a collision.

Moreover, the conventional shock absorber has to be installed on the basis of a position just before the sliding door body is closed, and there are many restrictions on the mounting position for the movement of the sliding door body. Therefore, the construction work was troublesome.

[0007]

The problem to be solved is that the traveling speed of the sliding door main body in the closing direction cannot be reduced, which poses various dangers at the time of closing and the construction work. It is a labor-intensive process.

[0008]

DISCLOSURE OF THE INVENTION The present invention is provided with a traveling wheel provided on an upper part of a sliding door body of a self-closing sliding door and rotatably mounted on a rail, and provided adjacent to the traveling wheel.
A braking body having a rotary pump connected to the traveling wheels via a gear train, an endless closed flow passage formed in the braking body and incorporating the rotary pump, and a bypass flow passage that divides the endless closed flow passage. And provided in the bypass channel,
It is composed of a check valve that restricts the flow of oil when the sliding door body moves in the closing direction, and a flow rate adjustment valve that is provided in the closed flow path facing the rotary pump.

Further, the check valve has a ring shape having a narrow flow passage in the central portion, and the ball for moving the bypass flow passage to close the narrow flow passage and the stopper for preventing the movement of the ball are the closed flow passages. It may be provided in the bypass flow path. Further, it is preferable that the stoppers are provided near the rotary pump in the closed flow path and at the branch points toward the flow rate adjusting valve, respectively. Further, a rack to which the driven gear of the traveling wheel is fixed and the driven gear of the rail is meshed may be attached.

[0010]

When the sliding door main body in the closed state is moved in the opening direction, the traveling wheels mounted on the rail rotate, and the rotary pump of the braking body linked to this via the gear train also rotates. Then, the oil filled in the closed channel is caused to move. That is, as shown in FIG. 3, the rotation of the rotary door in the direction of the arrow occurs due to the movement of the sliding door body in the opening direction, and the oil is regulated in one direction through the flow rate adjusting valve and the oil flow. It flows endlessly in the closed flow path and the bypass flow path via the check valve.

When the movement of the sliding door main body in the opening direction is completed, the sliding door main body starts to move in the closing direction by the action of the self-closing device, and the traveling wheels mounted on the rail are rotated, and this and the gear train. The rotary pump of the braking body, which is linked via the, also rotates and causes the oil filled in the closed flow path to move. However, as shown in FIG. 4, movement of the sliding door body in the closing direction causes rotation of the rotary pump in the direction of the arrow, but the bypass flow passage is blocked by the check valve to restrict the flow of oil. Therefore, the oil flows only through the flow rate adjusting valve of the closed flow path. By adjusting the flow of this oil with the flow rate adjusting valve, the rotation of the rotary pump and the rotation of the traveling wheels linked to it are controlled, regardless of the force in the closing direction of the self-closing device. The closing speed in the closing direction can be reduced to a speed required.

By the way, when the check valve is opened and closed by the ball moving in the bypass flow path by the oil flow, when the sliding door body is moved in the opening direction, the ball is non-returned by the oil flow. Although the valve is separated from the valve to open the bypass passage, when the sliding door body is moved in the closing direction, the ball moves in the direction of the check valve due to the oil flow and closes the bypass passage.

When the balls are separated from the bypass flow passage and moved to the closed flow passage due to the flow of oil, the closed flow passage is moved toward the rotary pump when the sliding door body is moved in the opening direction. Although it moves, the ball is stopped by a stopper provided on the rotary pump side, and when the sliding door body starts moving in the closing direction, the ball moves from the position of the stopper provided on the rotary pump side to the closed flow path toward the bypass flow path. However, the stopper provided at the branch point in the direction of the flow rate control valve stops the movement and sends it to the bypass flow passage to press it against the check valve. That is, after the sliding door body starts moving in the closing direction, the bypass flow passage is closed at some time intervals. Further, when the driven gear of the traveling wheel is fixed and a rack in which the driven gear meshes is attached to the door end portion of the rail,
The gradual movement of the sliding door main body in the closing direction causes the slave gear to mesh with the rack, thereby increasing the resistance and making it more gradual.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a sliding door body of a self-closing sliding door of a top suspension type,
A traveling vehicle 2 that opens and closes the sliding door body 1 is provided in the upper part near the door tip side, and is provided adjacent to the traveling wheel 2 and is connected to the traveling wheel 2 via a gear train to close the traveling wheel 2. A braking body 3 for controlling the rotational force in the direction is provided. 4 is a door roller provided on the upper end surface near the rear side of the door, and the traveling wheels 2 and the door wheel 4 are freely rollable on a rail 6 having an L-shaped cross section attached to the upper frame 5 so that the door tip direction is slightly lowered. It is placed in. Reference numeral 7 is a plate for attaching the traveling wheels 2 and the braking body 3 to the upper portion of the sliding door body 1, and 8 is a plate for attaching the door roller 4.

The body 9 of the braking body 3 has an endless closed flow path 12 incorporating a rotary pump 11 for circulating oil.
Is formed in the shape of a mouth, and the middle portion thereof is diverted by a bypass flow passage 13 that is slightly narrower than the closed flow passage 12 to form a letter V shape. Further, a flow rate adjusting valve 14 is incorporated at a position symmetrical to the rotary pump 11 with the bypass passage 13 interposed, and a check valve 15 is incorporated in the bypass passage 13. Further, one rotary shaft 16 of the rotary pump 11 is projected to the back portion, and the main gear 17 is fixed to this, which meshes with a slave gear 18 integrally fixed to the traveling wheel 2 to form the traveling wheel 2. The rotary pump 11 is connected in series by a gear train.

The flow rate adjusting valve 14 has a cylindrical shape with a flange 20 provided near one end thereof, and has a lower end portion formed into an inclined surface 21 cut at an angle of 45 degrees, and the flange 20 covers the main body 9 of the braking body 3. The operation unit 22 is held by the body 10 and rotatably faces the surface of the lid 10.

The check valve 15 has a ring shape having a narrow flow passage 23 at the center thereof, and a ball 24 for closing the narrow flow passage 23 on the side of the bypass flow passage 13 depending on the opening direction of the sliding door body 1.
Are installed. The balls 24 are separated from the bypass flow passage 13 by the flow of oil, and the closed flow passage 1
Stoppers 25 and 26 are provided near the rotary pump 11 of No. 2 and branch points toward the flow rate adjusting valve 14, respectively. Reference numeral 27 is a rack attached to the inner bottom surface of the rail 6 having an L-shaped cross section on the door tip side, and the sliding door body 1 moves in the closing direction.
The secondary gear 18, which is integrally fixed to the traveling wheel 2, is meshed.

In the illustrated embodiment, the first self-closing device is a first device.
As shown in the figure, the rail 6 is attached to the upper frame 5 so that the direction of the door tip is slightly lower. However, other known devices such as a self-closing device such as a mainspring system or an air cylinder system are shown. Needless to say, the sliding door body 1 is opened to the right and the braking body 3 is oriented sideways, but this is merely an example. The flow rate adjusting valve 14 is not limited to the one shown in the figure, and may be any one that can adjust the flow rate in the closed channel 12.
Further, even if the bypass flow passage 13 provided with the check valve 15 is formed outside the closed flow passage 12 provided with the flow rate adjusting valve 14, the same operational effect is obtained.

Further, although the closed channel 12 is formed in a letter V shape, the invention is not limited to this, and the closed channel 1
2 has a meandering shape, or the ball 2 is placed in the closed flow path 12.
4 may be one in which an obstacle for preventing a sudden movement of 4 is formed, and in any case, the closed flow passage 12 of the braking body 3 is endless and has the bypass flow passage 13. Of. Further, when the closing speed of the sliding door body 1 is entirely controlled from the beginning, a stopper for preventing the movement of the ball 24 may be provided near the check valve 15.

[0020]

Since the present invention is configured as described above, the moving speed of the sliding door body in the closing direction can be controlled to be decelerated, and the impact on the vertical frame at the time of closing can be mitigated.
It reduces noise and damage and eliminates the risk of injury to fingers and body due to collision. Further, since the present invention uses the rotary pump, the braking function can be exerted from any position, there is no limitation on the mounting position of the braking body, and the construction work can be easily performed, and
Since the self-closing device is not limited, it can be easily used as a braking device for an existing self-closing sliding door. Furthermore, when the check valve has a ring shape with a narrow passage in the center and the bypass passage is provided with a ball that blocks the narrow passage, the ball position is simply changed to the bypass passage. By arranging it on the opposite side, it can be used very easily for the sliding door body that opens in the opposite direction.

Moreover, since the stoppers for controlling the movement of the balls are respectively provided near the rotary pump in the closed flow path and at the branch points toward the flow rate adjusting valve, the moving range of the balls is increased, and the sliding door body is After the movement in the closing direction is started, the bypass flow path is blocked at a certain time interval, so the moving speed of the sliding door body in the closing direction is fast halfway, and the cooling and heating effect in the room is maintained. Is effective for. In addition, when the follower gear of the traveling wheel is fixed and the rack is attached to the door end of the rail, the follower gear meshes with the rack during the movement of the sliding door body in the closing direction, resulting in a large resistance. The moving speed of the main body in the closing direction is reduced.

[Brief description of drawings]

FIG. 1 is a front view of an upper part of a sliding door body with a part omitted.

FIG. 2 is a side view in which a part of an upper portion of a sliding door body is vertically cut.

FIG. 3 is an explanatory diagram of an opened state of the braking body when the sliding door body is moved in the opening direction.

FIG. 4 is an explanatory view of an open state of the braking body when the sliding door body moves in the closing direction.

FIG. 5 is a side view of a flow rate adjusting valve.

[Explanation of symbols]

 1 Sliding Door Main Body 2 Running Wheel 3 Braking Body 6 Rail 11 Rotary Pump 12 Closed Flow Path 13 Bypass Flow Path 14 Flow Control Valve 15 Check Valve 18 Sliding Gear 23 Narrow Flow Path 24 Ball 25 Stopper 26 Stopper 27 Rack

Claims (4)

[Scope of utility model registration request] 1. A traveling wheel (2) which is provided on an upper portion of a sliding door body (1) of a self-closing sliding door and is rotatably mounted on a rail (6), and adjacent to the traveling wheel (2). Is provided,
A braking body (3) having a rotary pump (11) connected to the traveling wheels (2) via gear trains (17) and (18);
An endless closed flow channel (12) formed in the braking body (3) and incorporating the rotary pump (11), and a bypass flow channel (13) obtained by dividing the endless closed flow channel (12).
And a check valve (15) provided in the bypass flow path (13) for restricting the flow of oil when the sliding door body (1) moves in the closing direction, and sealed against the rotary pump (11). A braking device for a self-closing sliding door, which comprises a flow rate adjusting valve ( 14 ) provided in a flow path (12). 2. The check valve (15) has a ring shape with a narrow channel (23) in the center, and a bypass channel (13).
(24) for moving the ball to block the narrow channel (23)
And a stopper (2 which prevents the ball (24) from moving.
5) and (26) are closed channels (12) and bypass channels (1
The braking device for a self-closing sliding door according to claim 1, which is provided in 3). 3. Stoppers (25), (26) are provided in the closed channel (12) near the rotary pump (11) and at a branch point in the direction of the flow regulating valve ( 14 ), respectively. Item 2. A braking device for a self-closing sliding door according to item 2. 4. The rack (27), to which the driven gear (18) of the traveling wheel (2) is fixed and which is meshed with the driven gear (18) of the door end portion of the rail (6). The braking device for a self-closing sliding door described in 2 or 3.