JPH11324475A - Decelerator for automatic closing sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an impact on the frame of a sliding door at a time when the sliding door is brought to a completely closed state by constituting the sliding door so as to be opened by manpower at the time of opening and be closed by the biasing force of an automatic return spring at the time of closing and applying the brakes when closing speed biased by the automatic return spring reaches a specified speed or more at the time of closing. SOLUTION: The sliding door is opened by manpower at the time of the opening of the sliding door and closed automatically by the biasing force of an automatic return spring at the time of closing. When acceleration closed by the automatic return spring reaches constant speed or more at the time of the closing of the sliding door at that time, a centrifugal clutch hook 20 pivotally supported to a hook pivot shaft 22 is widened gradually against a biasing spring in the axial center direction by rotating a centrifugal clutch plate 16, and engaged with a hook engaging pawl 23 formed to an engaging-pawl fixing ring 24, and the hook pivot shaft 22 is interlinked with the hook engaging pawl 23. Accordingly, the revolution of one-way clutch shaft 4 is stopped, a belt 26 is slipped, the number of revolution of a wire winding pulley is lowered, and the closing speed of the sliding door is delayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a sliding door,
In the sliding door automatic closing mechanism in which the sliding door is automatically closed after the sliding door is opened, when the automatically closed sliding door finally becomes completely closed, it does not impact against the sliding door frame. In particular, the present invention relates to an automatic closing sliding door speed reducer for reducing a closing speed of a sliding door.

[0002]

2. Description of the Related Art Conventionally, after a sliding door is manually opened,
It is well known that the sliding door is automatically and gradually closed without performing the closing operation. However, in the prior art, when the sliding door is finally closed and tightly closed to the sliding door frame, it collides with the sliding door frame with an impact, so that the sound at the time of closing is loud and the durability of the automatic closing sliding door is high. Was reduced.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned disadvantages of the prior art, the present invention reduces the speed of a sliding door that is automatically closed when the speed of the sliding door becomes faster than a predetermined speed, and reduces the speed of the sliding door when it collides with a sliding door frame. It is intended to mitigate the impact.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. According to claim 1, in an automatic closing sliding door speed reducer configured so that the sliding door D is opened by human power when opened and is automatically closed by the biasing force of the automatic return spring 10 when the sliding door D is closed, At
A braking mechanism is provided for braking when the closing speed urged by the automatic return spring 10 becomes equal to or higher than a certain speed. According to a second aspect, the braking mechanism according to the first aspect is a braking mechanism using a centrifugal clutch. According to a third aspect of the present invention, in the speed reducer for an automatic closing sliding door according to the second aspect, a speed reducer case fixed to an upper portion of the sliding door.
The two shafts of the one-way clutch shaft 4 and the automatic return spring shaft 5 are erected inside the
A wire take-up pulley 9, an automatic return spring 10, and a transmission pulley 7 are disposed, and a transmission pulley 15 and a centrifugal clutch mechanism are disposed on the one-way clutch shaft 4. The brake is applied by a centrifugal clutch mechanism. In claim 4,
In the speed reduction device for an automatic closing sliding door according to the third aspect, a braking friction disk 8 that constantly brakes the rotation of the wire winding pulley 9 is interposed.

[0005]

Next, an embodiment of the present invention will be described. FIG. 1 shows a sliding door D equipped with a sliding door speed reducer A of the present invention.
FIG. 2 is a perspective view showing an inserted state of the sliding door D and the sliding door speed reducer A. FIG. 3 is a sliding door speed reducer A.
, FIG. 4 is a rear view of the sliding door speed reducer A, FIG. 5 is a front sectional view of the sliding door speed reducer A, and FIG. 6 is a side sectional view of a part of the one-way clutch shaft 4 taken along line YY in FIG. 7, FIG. 7 is a side sectional view taken along the line XX of FIG.
8 is an exploded perspective view of a portion of the automatic return spring 10, FIG. 9 is a cross-sectional view showing a hook portion of the centrifugal clutch mechanism, and FIG.
0 is a sectional view of a rotating body 51 provided with an elastic body 52 on the outer periphery, FIG. 11 is a sectional view of the rotating body 53 having a gear 53a formed on the outer periphery, and FIG. 12 shows another embodiment of a hook portion of a centrifugal clutch mechanism. FIG. 13 is a sectional view showing another embodiment of the hook portion, FIGS. 14 and 15 are sectional views showing another embodiment of the centrifugal clutch mechanism, and FIG. 16 is a front sectional view of the shock absorbing device when the sliding door is closed. FIG. 17 and FIG. 17 are side cross-sectional views, and FIG. 18 is a cross-sectional view showing another embodiment of the shock absorbing device when the sliding door is closed.

Referring to FIG. 1, FIG. 2, FIG. 3, and FIG. 4, the relationship between the sliding door speed reducer A, the sliding door D, and the sliding door frame F of the present invention will be described. A sliding door D is placed on a sliding door rail provided inside the sliding door frame F via a door roller, and is slidable left and right. When the sliding door D is opened,
It is configured so that a person who enters or exits can perform a pulling operation and an opening operation by human power against the urging force of the automatic return spring 10.

A person who enters or leaves the door does not open the sliding door D and does not perform a closing operation after entering and exiting the door, but releases the hand from the sliding door D so that the sliding door D is gradually closed by the biasing force of the automatic return spring 10. ing. The automatic return spring 10 is disposed inside the sliding door speed reducer A. The speed reducer A for a sliding door is sized so that it can be accommodated in a width of 10 to 50 mm, which is the thickness of the sliding door D. The speed reducer A for sliding doors is enclosed in the speed reducer case 1, and the fixed brackets 1 a and 1 b extending horizontally from the upper part of the speed reducer case 1 are provided with sliding door speed reducers provided above the sliding door D. With the sliding door speed reducer A inserted into the mounting hole B of the device A, fasteners 35 such as screws or bolts and nuts are used.
・ It is fixed by 36.

In FIG. 5, FIG. 6, FIG. 7, and FIG. 8, a one-way clutch shaft 4 and an automatic return spring shaft 5 are fixedly mounted between the front plate 1d and the rear plate 1c of the reduction gear case 1. The one-way clutch shaft 4 and the automatic return spring shaft 5
It is configured so that it cannot rotate. On the automatic return spring shaft 5, a wire take-up pulley 9, an automatic return spring 10 locked to the inner diameter of the wire take-up pulley 9 and the other end locked to the automatic return spring shaft 5 are supported. Have been. The automatic return spring 10 has an outer end locking portion 10 a at one end fitted and engaged with a locking pin 14 provided on an inner diameter portion of the wire winding pulley 9. The other end of the automatic return spring 10 is fixed to the automatic return spring shaft 5 at the inner end locking portion 10b.

The wire winding pulley 9 is formed by forming a concave portion in the inner diameter portion thereof to form a spring chamber, and covering the concave portion with a spring chamber cover 12 in a state where the automatic return spring 10 is fitted in the concave portion. I have. The wire take-up pulley 9 is loosely supported on the automatic return spring shaft 5 by being supported by a bearing bush 11, and the spring chamber cover 12 is mounted on the bearing bush 1.
The bearing support is loosely fitted via 3. The wire winding pulley 9 is provided with a wire groove 9a for winding the open side wire 2 and a wire groove 9b for winding the closing side wire 3.

A wire guide rod 30 for the closing wire 3 and a wire guide rod 31 for the opening wire 2 are provided on the reduction gear case 1.
And the closing wire 3 are guided by the wire guide rods 30 and 31. The base ends of the open-side wire 2 and the close-side wire 3 are fixed to a wire take-up pulley 9, respectively, and the front ends are fixed to the open side and the closed side of the vertical frame of the sliding door frame F, respectively. A transmission pulley 7 is attached to the wire winding pulley 9 on the bearing bush 11 side, and the transmission pulley 7 is fixed to the automatic return spring shaft 5. A belt 26 is wound between the transmission pulley 7 and the transmission pulley 15 fixed on the one-way clutch shaft 4.

A braking friction disk 8 and a friction pressing plate 6 are provided on the opposite side (back surface) of the transmission pulley 7 from the wire winding pulley 9, and a braking friction disk is provided between the transmission wheel 7 and the friction pressing plate 6. 8 are interposed. In order to adjust the braking force of the braking friction disk 8, a braking force adjusting screw 27 is provided on the friction pressing plate 6 and the speed reducer case 1. By adjusting the braking force adjusting screw 27 from outside the reduction gear case 1, the braking urging force of the braking friction disk 8 can be adjusted.

On the one-way clutch shaft 4 fixed to the reduction gear case 1, a centrifugal clutch plate 16, a transmission pulley 15, and a braking friction disk 18 are loosely fitted and rotatably supported. The engagement claw fixing ring 24 and the friction pressing plate 19 are fixed to the reduction gear case 1. The engagement claw fixing ring 24 is fixed to the reduction gear case 1 by fixing screws 32. Friction rotation occurs between the friction pressing plate 19 and the braking friction disk 18.

On the one-way clutch shaft 4,
The friction pressing plate 19, the braking force adjusting screw 28, the braking friction disk 18, the transmission pulley 15, the centrifugal clutch plate 16 and the like are supported. In this, the transmission pulley 15 and the centrifugal clutch plate 16 are integrally formed and rotate simultaneously. Further, the braking friction disk 18 also rotates together with the transmission pulley 15. However, the friction pressing plate 19 is fixed to the reduction gear case 1 by a braking force adjusting screw 28, so that friction braking is applied between the braking friction disk 18 and the friction pressing plate 19.

A centrifugal clutch hook 20 is pivotally supported on the centrifugal clutch plate 16 by a hook pivot shaft 22, as shown in FIG. The centrifugal clutch hook 20 is always
An axial biasing spring 21 urges the one-way clutch shaft 4 toward the axis. An engaging claw fixing ring 24 is fixed to the reduction gear case 1 side.
The engaging claw fixing ring 24 is provided with a hook engaging claw 23. The hook engaging claw 23 and the engaging portion of the centrifugal clutch hook 20 are configured to engage when the transmission pulley 15 rotates at high speed. As mentioned above,
A centrifugal clutch mechanism is configured.

Next, the operation of the automatic closing sliding door speed reducer will be described. When the person who enters and exits opens the sliding door D, the sliding wire D slides to the open side, and the closing wire 3 is fixed to the closing sliding door frame F. The wire take-up pulley 9 rotates through the wire groove 9a around which the closing-side wire 3 is wound. The rotation of the wire take-up pulley 9 causes the open side wire 2 to move into the wire groove 9 b of the wire take-up pulley 9.
And the automatic return spring 10 is wound.

When the hand is released from the sliding door D, the wire take-up pulley 9 rotates in a direction to close the sliding door D by the urging force of the automatic return spring 10. As a result, the closing-side wire 3 is wound up, and the opening-side wire 2 is pulled out while being closed by the urging force of the automatic return spring 10. However, with respect to the rotation of the wire take-up pulley 9, the transmission pulley 7 integrally formed rotates integrally via the bearing bush 11, and the transmission pulley 7 is formed on the side surface of the transmission pulley 7 with the friction pressing plate 6. , A certain amount of braking force is constantly applied to the rotation of the wire take-up pulley 9 and the transmission pulley 7 via the braking friction disk 8. When a person who goes in and out opens the sliding door D, the sliding door D is moved by the braking force of the braking friction disc 8.
The force that pulls increases. Also, one-way clutch shaft 4
Since the braking friction disk 18 is interposed between the transmission pulley 15 and the friction pressing plate 19, the braking force of the braking friction disk 18 is also applied to the transmission pulley 15 to pull the sliding door D. Becomes larger.

When the sliding door D is automatically closed by the force of the automatic return spring 10, the wire take-up pulley 9 is braked by the braking friction disk 8, and the transmission pulley 15 is braked by the braking friction disk 18. Therefore, the closing force of the automatic return spring 10 is reduced by the amount of the braking force. However, as a result of the continuous closing force from the automatic return spring 10 when closing, the closing speed of the sliding door D is accelerated and gradually increased. Therefore, when the acceleration for closing the sliding door D exceeds a certain fixed speed, the rotation speed of the centrifugal clutch plate 16 gradually increases, and the rotation of the centrifugal clutch plate 16 causes the centrifugal shaft supported by the hook pivot shaft 22 to rotate. The clutch hook 20 is configured to gradually expand against the axial biasing spring 21 and to engage with the hook engaging claw 23 provided on the engaging claw fixing ring 24.

When the hook pivot shaft 22 engages with the hook engaging claw 23, the rotation of the one-way clutch shaft 4 stops, the belt 26 slips, and the rotational speed of the wire winding pulley 9 decreases. Therefore, the closing speed of the sliding door D is reduced. When the closing speed falls below a certain fixed value, the operation force of the axial biasing spring 21 causes the hook pivot shaft 22 to return to its original position, the rotation of the transmission pulley 15 becomes free, and the rotation of the wire take-up pulley 9 also increases. The sliding door D is opened to a possible state, and the moving speed of the sliding door D also returns to a certain extent. As shown in FIG. 2 to FIG.
Is made larger than the diameter of the transmission pulley 15 so that a higher rotation is transmitted to the transmission pulley 15 than the wire take-up pulley 9. Belt 26
The low-speed rotation is provided by slipping itself.

As another embodiment, in addition to the configuration using the wire take-up pulley 9 and the wires 2 and 3, as shown in FIG.
An elastic body 52 made of synthetic resin such as rubber is provided on the outer periphery of
It is also possible to adopt a configuration in which the rotating body 51 is rotated by the frictional force between the elastic body 52 and the gate 60, and as shown in FIG.
It is also possible to arrange the plate gear 53b meshing with 3a on the gate 60 and rotate the gear 53a.

In the structure of the centrifugal clutch hook 20 provided on the centrifugal clutch plate 16, FIGS.
As shown in the figure, a weight 55 urged by an axial direction urging spring 54 is arranged on the one-way clutch shaft 4 to form a hook portion, and the hook portion is radially arranged in one direction or two directions. It is also possible. Further, instead of the configuration of the hook portion of the centrifugal clutch mechanism, as shown in FIGS. 14 and 15, an elastic sphere 92 or an elastic body 93 made of a synthetic resin such as rubber is hooked to a hook engaging claw via a cam mechanism. A centrifugal clutch mechanism that uses the frictional force by contacting the inner peripheral surface of the fixed ring 24 where no 23 is provided can also be configured.

The elastic sphere 92 is, as shown in FIG.
The weight 94 urged by the spring 96 in the axial direction of the one-way clutch shaft 4 moves outward by centrifugal force, and holds the mounting member 95 to which the weight 94 is mounted and the elastic sphere 92. The holding member 97 moves outward through a cam mechanism provided on the holding member 97, so that the holding member 97 comes into contact with the inner peripheral surface of the fixed ring 24. The elastic sphere 92 is configured to act only when rotating in one direction. That is, the transmission pulley 1
5, the elastic sphere 92 is fixed to the fixed link 2
4. The elastic body 9
A weight 94 urged by a spring 96 in the axial direction of the one-way clutch shaft 4 moves outward by centrifugal force as shown in FIG. The elastic body 93 is moved outward through a cam mechanism provided on the elastic body 93 to make contact with the inner peripheral surface of the fixed ring 24. That is, when the transmission pulley 15 rotates at a high speed,
Are configured to contact the fixed link 24.

Next, the structure of the shock absorbing device when the sliding door D is closed will be described with reference to FIGS. Sliding door D
A push rod mounting member 70 is provided upright on a portion of the upper end surface on the closed side, and the push rod mounting member 70 has a support member 70a.
A push rod 71 is disposed in a state where the push rod 71 protrudes toward the closing side of the sliding door D via a pull spring 70b and is urged. On the sliding door frame F side facing the push rod 71, a cylindrical member 72 is projected, and a piston 73 is disposed in the cylinder of the cylindrical member 72, and a flange 74a is provided on the outside. A stop member 74 is provided. The piston 73 is urged by a push spring 73a, and the locking member 74 is urged by a pull spring 74a.

An upper cam 75 and a lower cam 7 which are engaged with a locking member 74 are located above and below the push rod 71 of the push rod mounting member 70.
The upper cam 75 is supported by a support shaft 77 protruding from the push rod mounting member 70 side, and the lower cam 76 is supported by a support shaft 78 protruding from the Kamoi 60 side. , And each of the front end engaging portions is vertically rotatable. The upper cam 75 engages with the locking member 74 when the sliding door D is closed via a pin 79 protruding from the side of the gate 60, and separates from the locking member 74 when the sliding door D is opened. Similarly, the lower cam 76 engages with the locking member 74 when the sliding door D is closed via a pin 80 protruding from the push rod mounting member 70 side, and the lower cam 76 Is configured to be separated from the locking member 74 when opened.

By configuring the shock absorbing device when the sliding door D is closed as described above, the sliding door D is
When the push rod 71 is automatically closed by the biasing force of
b) It can be absorbed and relaxed by the pressing spring 73a. The shock absorbing device when the sliding door D is closed is shown in FIG.
As shown in FIG. 8, a push rod 81 and a push cylinder 82 project from the sliding door D,
It is also possible to configure by disposing a piston 83, a pressing spring 84, and the like on the sliding door frame F side at a position facing them. The push rod mounting member 70 includes
Are rotatably supported, and the upper door wheel 90 is
It is mounted on a sliding door rail 91 provided at the position 0.

[0025]

As described above, the present invention has the following advantages. Sliding door D as in claim 1
When the sliding door D is closed, the automatic return spring 10 applies a force to the automatic return spring 10 when the sliding door D is closed. Since the braking mechanism that applies the braking when the energized closing speed is equal to or higher than a certain speed is provided, the speed of the sliding door D is not too fast when returning,
Sliding door D was not closed by shock. As a result, the durability of the sliding door D was improved, and the noise when the automatic closing sliding door was closed could be prevented.

Since the braking mechanism according to claim 1 is a braking mechanism using a centrifugal clutch, the fact that the speed of the sliding door D has increased is detected by the centrifugal clutch plate 16 and the centrifugal clutch hook 20. Because it can be configured, a simple and low-cost configuration can be achieved.

According to a third aspect of the present invention, in the speed reducer for an automatic closing sliding door according to the second aspect, the one-way clutch shaft 4 and the automatic return spring shaft 5 are provided inside the speed reducer case 1 fixed to the upper part of the sliding door D. A wire winding pulley 9 and an automatic return spring 1 are mounted on the automatic return spring shaft 5.
0, the transmission pulley 15 and the centrifugal clutch mechanism are arranged on the one-way clutch shaft 4, and when the moving speed becomes a certain speed or more during automatic closing, braking is applied by the centrifugal clutch mechanism and the belt 26 is slipped. As a result, the speed reduction device for the automatic closing sliding door can be all disposed on the one-way clutch shaft 4 and the automatic return spring shaft 5 erected inside the speed reduction device case 1, thereby reducing the size and cost. It was possible to make a simple device. In addition, a device capable of being fitted into the mounting hole B above the sliding door D having a width of 10 to 50 mm could be obtained.

According to a fourth aspect of the present invention, in the speed reducer for an automatic closing sliding door according to the third aspect, the braking friction disk 8 that constantly brakes the rotation of the wire winding pulley 9 is provided.
By adjusting the portion of the friction pressing plate 6 that presses the braking friction disk 8, it is possible to constantly adjust the urging force.

[Brief description of the drawings]

FIG. 1 is an overall front view of a sliding door D and a sliding door frame F equipped with a sliding door speed reducer A of the present invention.

FIG. 2 is a perspective view showing an inserted state of a sliding door D and a sliding door speed reducer A.

FIG. 3 is a front view of a sliding door speed reducer A;

FIG. 4 is a back view of the sliding door speed reducer A;

FIG. 5 is a front cross-sectional view of a sliding door speed reducer A;

FIG. 6 is a sectional view of the one-way clutch shaft 4 taken along line YY in FIG. 3;
FIG.

FIG. 7 is a side sectional view taken along the line XX of FIG.

FIG. 8 is an exploded perspective view of the automatic return spring 10;

FIG. 9 is a sectional view showing a hook portion of the centrifugal clutch mechanism.

FIG. 10 is a sectional view of a rotating body 51 provided with an elastic body 52 on the outer periphery.

FIG. 11 is a sectional view of a rotating body 53 having a gear 53a engraved on the outer periphery.

FIG. 12 is a sectional view showing another embodiment of the hook portion of the centrifugal clutch mechanism.

FIG. 13 is a sectional view showing another embodiment of the hook portion.

FIG. 14 is a sectional view showing another embodiment of the centrifugal clutch mechanism.

FIG. 15 is a sectional view showing another embodiment of the centrifugal clutch mechanism.

FIG. 16 is a front sectional view of the shock absorbing device when the sliding door is closed.

FIG. 17 is a side sectional view of the same.

FIG. 18 is a sectional view showing another embodiment of the shock absorbing device when the sliding door is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Speed reducer for sliding doors 1 Speed reducer case 2 Open side wire 3 Closed side wire 9 Wire winding pulley 10 Automatic return spring 16 Centrifugal clutch plate 18 Brake friction disc 20 Centrifugal clutch hook

Claims (4)

[Claims] When the sliding door D is closed, the sliding door D is manually opened when the sliding door D is opened and automatically closed by the biasing force of the automatic return spring 10 when the sliding door D is closed. A speed reduction device for an automatic closing sliding door provided with a braking mechanism for applying a braking when a closing speed urged by an automatic return spring 10 becomes equal to or higher than a predetermined speed. 2. A speed reducer for an automatic closing sliding door, wherein the braking mechanism according to claim 1 is a braking mechanism using a centrifugal clutch. 3. The speed reducer for an automatic closing sliding door according to claim 2, wherein a one-way clutch shaft 4 and an automatic return spring shaft 5 are provided inside the speed reducer case 1 fixed to an upper portion of the sliding door D.
The wire return pulley 9, the automatic return spring 10, and the transmission pulley 7 are disposed on the automatic return spring shaft 5, and the transmission pulley 15 is disposed on the one-way clutch shaft 4. A speed reducer for an automatic closing sliding door, wherein a centrifugal clutch mechanism is arranged, and when the moving speed exceeds a certain value during automatic closing, braking is applied by the centrifugal clutch mechanism. 4. A speed reducer for an automatic closing sliding door according to claim 3, further comprising a braking friction disk for intermittently braking the rotation of the wire winding pulley.