JP4091044B2 - Sliding door braking device - Google Patents

Description

  The present invention relates to a sliding door braking device, and more particularly to a sliding door braking device using a rotating braking mechanism having a braking function in both rotational directions.

  2. Description of the Related Art Conventionally, as a sliding door braking device, an apparatus using a braking device having a braking function on the rotating side in one direction at the upper part of the sliding door has been proposed.

  By the way, as shown in FIG. 5, the sliding door braking device 50 includes a traveling wheel 4 that is mounted on the upper portion of the sliding door 2 via a bracket 5 a and suspends the sliding door 2. A rack 53a is arranged on the rotating shaft 51a of the braking device 51 having a braking function on the one-side rotating side disposed on the upper part of the sliding door 2 and meshes with the pinion 52 on the fixed side (for example, the sliding door frame 3). , 53b are arranged at positions where the sliding door 2 meshes with the pinion 52 from near the fully open position and the fully closed position.

  The pinion 52 is attached to the rotating shaft of the braking device 51 having a braking function on the rotating side in one direction (in the example shown, the brake is counterclockwise). The arranged rack 53a is arranged with the teeth facing upward, and the open rack 53b is arranged with the teeth facing downward, both when the sliding door 2 is fully closed and when fully opened. One sliding device 51 can brake the sliding door 2 (see, for example, Patent Documents 1 and 2).

However, the braking device 50 for the sliding door generates a braking action when the pinions 52 attached to the rotating shaft of the braking device 51 are engaged with the racks 53a and 53b arranged on the fixed side. The meshing position of the pinion 52 and the racks 53a and 53b that are rotated by sliding or the like is not constant.
For this reason, the pinion 52 may ride on the teeth without meshing with the racks 53a and 53b. At that time, a large noise is generated, and problems such as missing teeth of the racks 53a and 53b may occur.
In order to cope with this, the pinion 52 and the racks 53a and 53b do not mesh with each other, and rubber is attached to the tip of the rack 53 so that no impact sound is generated even if the tooth tips ride on each other. However, this has been a factor in increasing the cost of the entire apparatus.
The braking device 51 must employ a so-called one-way bearing having a braking function on the one-side rotation side so that the braking action does not work when the sliding door moves from the fully closed / open position. It was a factor of high cost.
Japanese Patent No. 2730871 JP-A-8-246744

  In view of the problems of the conventional sliding door braking device described above, the present invention constantly engages the pinion and the rack, does not generate an abnormal noise due to a poor meshing between the rack and the pinion, and does not cause the rack to spill out. An object of the present invention is to provide a sliding door braking device that can be manufactured at low cost by using a rotary braking mechanism having a braking function in the direction.

  In order to achieve the above object, a sliding door braking device according to the present invention has a braking function in both rotation directions, a pinion is arranged on a rotating shaft, and is fixed to the sliding door, and the rotary braking mechanism. And a rack member disposed on the sliding door so as to be slidable within a predetermined range and a moving direction of the sliding door, and an end of the rack member abut on each other, so that the rack member is relative to the sliding door. And a stop member disposed on the fixed side for sliding movement.

  In this case, the two rack members are disposed on the sliding door so as to be independently slidable with the pinion of the rotary braking mechanism interposed therebetween, and the stop member is arranged in front of the stop member of the two rack members. The rack member can be slidably moved relative to the sliding door by selectively abutting only the rack member abutting on the sliding door.

  According to the sliding door braking device of the present invention, the rack member moves together with the pinion in a state where the rack member is always meshed with the pinion, the rack member comes into contact with the stop member, and the pinion meshed with the rack member is rotated to turn the sliding door Since braking is performed, it is possible to provide a sliding door braking device that does not cause a change in the meshing position and does not cause the rack to ride on the pinion or cause rack racking.

  In addition, the two rack members are disposed on the sliding door so as to be independently slidable with the pinion of the rotary braking mechanism interposed therebetween, and the stop member is first applied to the stop member of the two rack members. When the rack member is slidably moved relative to the sliding door by selectively contacting only the rack member in contact with the sliding door, the sliding door starts to open from the fully closed position and does not reach the fully open position. Even when the sliding door is returned to the fully closed position in the state, one of the two rack members abuts against the stop member and the sliding door can be reliably braked.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a sliding door braking device according to the present invention will be described below with reference to the drawings.

1 to 2 show a first embodiment of a braking device for a sliding door according to the present invention.
This sliding door braking device 1 is mainly applied to a self-closing type sliding door device, and is arranged on the upper part of the sliding door frame member in which traveling wheels are arranged on the upper part of the sliding door as in this embodiment, and is inclined in the closing direction. In addition to the hanging door type placed on the rail for traveling, it is a form that runs on a rail with a door wheel laid on the bottom of the sliding door and urges the sliding door in the closing direction with a wire with a weight attached to the tip The present invention may also be applied to a sliding door device that does not have a self-closing function.

The sliding door braking device 1 includes a sliding door 2 disposed at the doorway, and a traveling rail 4 on which a traveling wheel 5 attached to the upper part of the sliding door 2 via a bracket 5a is mounted and the sliding door 2 is suspended. The sliding door 2 is braked in the fully closed and fully opened positions. A pinion 12 is arranged on a rotating shaft 11a of a rotary braking mechanism 11 having a braking function in both forward and reverse rotation directions, and a flange 14 is provided on the upper surface of the sliding door 2. Fix through.
Although the flange 14 shows the example which fixes the traveling wheel 5 to the bracket 5a which fixes the upper surface of the sliding door 2 like the example of a figure, you may comprise so that it may fix to the sliding door 2 directly.

  In addition, a rack member 13 that meshes with the pinion 12 is disposed on the sliding door 2 via a sliding rail 15 so as to be slidable within a predetermined range with respect to the moving direction of the sliding door 2. At this time, the rack member 13 is formed with a groove portion 14a that fits into the protruding portion 15a of the slide rail 15 so that the slide rail 15 disposed on the flange 14 does not fall out except in the sliding direction. Further, the rack member 13 may be provided with a restricting member (not shown) so as not to fall off in the sliding direction.

  The end of the rack member 13 abuts on the fixed side of the sliding door frame 3 and the like, and the stop member 20 that slides the rack member 13 relative to the sliding door 2 is fully closed and closed. Arranged near the fully open position.

In the above configuration, in the case of a right-opening sliding door device as shown in FIG. 1, when the sliding door 2 is in the fully closed position, as shown in FIG. 1 (a), the stop member in which the left end of the rack member 13 is fixed near the fully closed position. The rack member 13 is in a state where the right end protrudes from the slide rail 15.
Next, when the sliding door 2 is moved to the fully open position (right side in the figure), the right end of the rack member 13 comes into contact with the stop member 20b fixed near the fully open position (see FIG. 1B), and the rack member 13 slides. Although the sliding movement starts along the moving rail 15, the teeth of the rack member 13 mesh with the pinion 12 rotatably disposed on the rotary shaft 11a of the rotary braking mechanism 11 having a braking function in both rotational directions. The transition of the sliding door 2 is braked to prevent a momentary collision with the fully open side door stop (see FIG. 1 (c)).
In the fully open position, a well-known fully open stopper or the like (not shown) is preferably arranged so that the sliding door 2 is stopped at the fully open position.
Moreover, it is preferable to arrange | position the raw material for muffling the contact sound of the stop member 20 and the rack member 13 in the contact surface at the front-end | tip of the stop member 20 or the rack member 13. FIG.

  When the sliding door 2 is moved from the fully open position to the fully closed position, as shown in FIG. 1C, the left end of the rack member 13 protruding to the left is fixed to the stop member 20a fixed to the vicinity of the fully closed position. The rack member 13 starts to slide along the slide rail 15, but the teeth of the rack member 13 mesh with the pinion 12 as in the transition to the fully open position, and the transition of the sliding door 2 is braked. Collisions with momentum on the fully closed door stop are prevented (see FIG. 1 (a)).

3 to 4 show a second embodiment of the braking device for a sliding door according to the present invention.
The braking device 1 for the sliding door is disposed on the sliding door so that the two rack members 13a and 13b can be independently slidably moved at symmetrical positions with the pinion 12 disposed on the rotating shaft 11a of the rotary braking mechanism 11 interposed therebetween. At the same time, the stop member 20 is selectively brought into contact with only the rack member 13 that has come into contact with the stop member 20 first of the two rack members 13a and 13b, so that the rack member 13 is brought into contact with the sliding door 2. Are relatively slid and moved.

  Two rack members 13a and 13b are arranged in parallel via the slide rail 15 so as to be slidable within a predetermined range with respect to the moving direction of the sliding door 2 with the pinion 12 sandwiched between the flanges 14. The shape of the stop member 20 is not particularly limited. For example, as shown in FIG. 3, the stop member 20 is a restriction member that prevents the swinging member 21 having a square cross section and the respective sides 21 c and 21 d of the square shape. The member 22 includes two members up and down, and a holding member 23 made of an elastic body such as a spring that normally holds the swinging member 21 at the position shown in FIG. 21b is arranged, and is disposed on the fixed side such as the sliding door frame 3 so as to be swingable. The holding member 23 uses a torsion spring or the like with both ends of the winding extended, and one end is fixed to the upper side as shown in the figure, and the lower side 21d of the swinging member 21 is held at the other end. The stop member 20 can be disposed in the vicinity of the fully closed and fully opened positions of the sliding door 2, and can be disposed only in a place where braking in the fully closed or fully opened position is necessary.

  In the above configuration, in the case of a right-opening sliding door device as shown in FIG. 3, when the sliding door 2 is in the fully closed position, as shown in FIG. The left end of 13b abuts against the lower side 21d of the swinging member 21 constituting the stop member 20a disposed in the vicinity of the fully closed position, and the rack member 13b has a right end extending from the slide rail 15. In the protruded state, the rack member 13 a is in a state where the left end protrudes from the slide rail 15. At this time, the swinging member 21 swings from the square shape to the reverse L-shape when the rack member 13b comes into contact with the lower side 21d of the square shape first. The upper side 21c does not contact the rack member 13a. The sliding door 2 is braked by meshing the rack member 13 and the pinion 12 as in the first embodiment.

Next, when the sliding door 2 is moved in the opening direction (right side in the figure), the swinging member 21 disposed in the vicinity of the fully closed position is moved from the state of FIG. Restore to the state of (b).
When the sliding door 2 is moved to the vicinity of the fully open position, the lower rack member 13b contacts the lower side 21d of the swinging member 21 constituting the stop member 20b disposed in the vicinity of the fully open position. In contact with each other, when the sliding door 2 is fully opened, the sliding door 2 receives a braking action and prevents a collision with a momentum against the door on the fully opened side.

  Further, from the position of FIG. 3B, that is, the state in which the sliding door 2 is not completely moved to the fully opened position (the state in which the rack member 13 is not brought into contact with the stop member 20b fixed in the vicinity of the fully opened position). 2 is moved to the fully closed position by a self-closing device such as the traveling rail 4 inclined to the closed side or manually moved, the stop where the left end of the upper rack member 13a is disposed in the vicinity of the fully closed position. The rack member 13a first abuts on the upper side 21c of the swinging member 21 constituting the member 20a to swing from the letter shape to the L shape. The rack member 13b does not abut. The sliding door 2 is braked by meshing the rack member 13 and the pinion 12 as in the first embodiment.

  As described above, in the second embodiment, the two rack members 13 are disposed with the pinion 12 of the rotary braking mechanism 11 interposed therebetween. Therefore, the present invention can be applied to a sliding door other than the one that repeats full closing and full opening as in the first embodiment. be able to.

  Although the sliding door braking device of the present invention has been described based on a plurality of embodiments, the present invention is not limited to the configurations described in the above embodiments, and the configurations described in the embodiments are appropriately combined. The configuration can be changed as appropriate without departing from the spirit of the invention.

  In the sliding door braking device of the present invention, a pinion disposed in a rotary braking mechanism having a braking function in both rotational directions, a rack meshing with the pinion are fixed to the sliding door, and a stop member is disposed on the fixed side. Since it has the characteristic of being able to brake sliding doors with a simple configuration, it can be used for newly installed sliding door equipment, for example, for applications that are applied to additional modifications of existing sliding door equipment, etc. be able to.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an operation of a first embodiment of a braking device for a sliding door according to the present invention. Indicates the fully open state. It is a side view which shows 1st Example of the braking device of the sliding door of this invention, and is XX arrow line view of Fig.1 (a). It is a front view which shows operation | movement of 2nd Example of the braking device of the sliding door of this invention, (a) is a fully-closed state, (b) is the state which started opening the sliding door from a fully-closed position to an open state, (c ) Shows a state where the state of (b) is returned to the fully closed state again. It is a side view which shows 2nd Example of the braking device of the sliding door of this invention, and is YY arrow line view of Fig.2 (a). It is a front view which shows the braking device of the conventional sliding door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding door braking device 2 Sliding door 11 Rotary brake mechanism 11a Rotating shaft 12 Pinion 13 Rack member 13a Rack member 13b Rack member 20 Stop member 20a Stop member 20b Stop member

Claims (2)

  It has a braking function in both rotation directions, has a pinion on the rotating shaft, meshes with the rotary brake mechanism fixed to the sliding door, and the pinion of the rotary braking mechanism, and within the predetermined range with the moving direction of the sliding door The rack member is disposed on the sliding door so as to be slidable, and the stop member is disposed on the fixed side in which the end of the rack member abuts and slides relative to the sliding door. A sliding door braking device.   The two rack members are arranged on the sliding door so as to be independently slidable with the pinion of the rotary braking mechanism interposed therebetween, and the stop member is first brought into contact with the stop member of the two rack members. 2. The sliding door braking device according to claim 1, wherein the rack member is selectively brought into contact with only the rack member so as to slide relative to the sliding door.

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