JPWO2022138526A5 - - Google Patents

Description

0002
In order to provide a braking device for a sliding door that can be gently stopped at a predetermined position such as fully closed, a technical problem arises that needs to be solved, and the present invention aims to solve this problem. do.
Means for solving problems [0007]
The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a braking device for a sliding door, which includes a fixed rail provided on the upper surface of an opening on which a door plate of the sliding door is installed. a movable rail provided on the door plate and movable together with the door plate along the fixed rail; and a movable rail installed between the fixed rail and the movable rail and movable relative to the fixed rail. a damper mechanism that applies a braking force to the movable rail, the damper mechanism having a rotational output shaft, and when the rotational output shaft rotates in the opening direction or closing direction of the door plate, the rotational output is a damper that applies rotational resistance to the shaft; a rack member provided on the fixed rail side with a plurality of rack teeth arranged along the moving direction of the door plate; and a rack member disposed integrally with the rotation output shaft; a main gear that is rotatable while meshing with the rack teeth; a support gear that is disposed alongside the main gear and rotatable on the rotational output shaft and is rotatable while meshing with the rack teeth; A friction means for generating a friction force that transmits the rotation of the support gear to the main gear is provided between the gear and the support gear, and the main gear engages with the rack teeth during the opening movement of the door plate. To provide a braking device for a sliding door, which has a first toothless part that releases the brake.
[0008]
According to this configuration, when the door plate closes itself, the movable rail that is moved together with the door plate moves toward the closed position at a substantially predetermined speed by the damper mechanism. Therefore, the door plate that moves together with the movable rail also moves from the open position toward the closed position at a substantially predetermined speed. As a result, the opened door panel can always automatically return to the closed position at a constant speed, no matter where you stop opening and let go of your hand.
Further, when the door plate is moved toward the closed position or the open position, the main gear and the rack teeth of the rack member mesh with each other, and the rotary output shaft rotates in the opening direction or the closing direction. When opening the door plate, the rotating output shaft rotates in the direction where the damper's rotational resistance is smaller.

0003
Since it rotates, the door plate can be opened with light force. Furthermore, when the first tooth-missing portion corresponds to the rack teeth of the rack member, the rack member and the main gear will no longer mesh. As a result, the main gear stops rotating, and the rotation output shaft of the damper also stops rotating. Since the transmission between the damper and the movable rail is also cut off, the door plate can be moved in the opening direction with even less force.
On the other hand, if the door panel is released while it is moving or from a fully opened state, the door panel will move in the closing direction due to its own weight. At the same time, the support gear rotates (idls) on the rotating output shaft. When the support gear rotates, the rotation of the support gear is transmitted to the main gear by the frictional force generated between the support gear and the main gear, and the main gear is also guided in the closing direction and rotates slightly, causing the main gear to close the rack. It meshes with the rack teeth of the member. Then, the main gear rotates together with the rotary output shaft of the damper in a closing direction, that is, in a direction in which the damper applies a large rotational resistance to the rotary output shaft to rotate the rotary output shaft at a constant speed. As a result, a braking force by the damper acts on the movable rail, and the door plate slowly moves in the closing direction at a substantially predetermined speed. Furthermore, during the movement of the door plate or when the door plate is released from the fully opened state, the rotation of the support gear is mainly caused by the friction force generated by the friction means provided between the main gear and the support gear. It can be transmitted to the gear reliably. As a result, the main gear is also rotated in the closing direction, and the main gear reliably meshes with the rack teeth of the rack member.
[0009]
[0010]
[0011]
The invention according to claim 3 is the configuration according to claim 1, in which the main gear is provided with a second tooth-missing portion that releases the meshing with the rack teeth during the closing movement of the door plate. Provides a braking device for sliding doors.
[0012]
According to this configuration, the door plate is moved in the closing direction and, for example, when the door plate reaches the closing end.

0004
When the second toothless portion reaches the rack member during the rotation, the main gear stops rotating, and the rotation output shaft of the damper also stops rotating. As a result, the transmission between the movable rail and the damper is cut off, and the door plate moves to the fully closed position due to its own weight and closes naturally. Further, when the door plate is moved in the opening direction and, for example, on the way to the opening end, the second toothless portion reaches the rack member, the main gear stops rotating, and the rotation output shaft of the damper also stops rotating. This breaks the transmission between the movable rail and the damper, making it possible to open the door plate with a light force. Then, for example, by setting the positions where the first tooth-less portion and the second tooth-less portion are provided, it is possible to change the operation timing in the opening direction and the operation timing in the closing direction of the door plate, respectively.
[0013]
The invention according to claim 4 is the configuration according to claim 1 or 3, wherein the main gear includes a second tooth-missing portion that releases the meshing with the rack teeth during the closing movement of the door plate. We provide braking devices for sliding doors.
[0014]
According to this configuration, the transmission of frictional force that transmits the rotation of the support gear to the main gear is increased by the contact resistance generated by the O-ring made of an elastic member, thereby assisting the rotation of the main gear in the closing direction and opening direction. can do.
The invention according to claim 5 is the configuration according to claim 1, in which the main gear is formed with a through-mounting hole that is inserted into the main gear mounting portion of the rotational output shaft, and the through-mounting hole is configured such that: To provide a braking device for a sliding door, in which the main gear is formed to have a larger diameter than the cross section of the main gear attachment part so as to be rotatable by one tooth between the rack teeth.
According to this configuration, when the main gear is attached to the main gear mounting portion and rotated, the main gear is set to be a loose fit that allows the main gear to rotate by one tooth.
Effects of the invention [0015]
According to the present invention, no matter where you let go of the sliding door plate, it will not close forcefully and will automatically stop at a predetermined position over a certain period of time, improving safety. do.
Simple invention of drawings [0016]
[FIG. 1] It is a schematic perspective view showing the entire configuration of a self-closing sliding door incorporating a sliding door braking device according to the present invention, with the door plate closed.
[FIG. 2] FIG. 2 is an enlarged perspective view of section A in FIG. 1.
[FIG. 3] It is a schematic top view which shows the structure of the braking part by the side of a sliding door in the braking device of a sliding door same as the above.
[FIG. 4] It is a schematic front view showing the structure of the braking part on the sliding door side shown in FIG. 3. [FIG.

Claims (5)

A braking device for a sliding door,
a fixed rail provided on the upper surface of the opening where the door plate of the sliding door is installed; a movable rail provided on the door plate and movable along the fixed rail together with the door plate;
a damper mechanism that is installed between the fixed rail and the movable rail and applies a braking force to the movable rail that moves relative to the fixed rail;
The damper mechanism is
a damper that has a rotational output shaft and applies rotational resistance to the rotational output shaft when the rotational output shaft rotates in the opening direction or closing direction of the door plate;
a rack member provided on the fixed rail side with a plurality of rack teeth arranged along the moving direction of the door plate;
a main gear that is disposed integrally with the rotation output shaft and is rotatable by meshing with the rack teeth;
a support gear that is disposed in line with the main gear, is rotatably provided on the rotation output shaft, and is rotatable while meshing with the rack teeth;
Friction means for generating a friction force between the main gear and the support gear to transmit rotation of the support gear to the main gear;
Equipped with
The main gear is
comprising a first tooth-missing portion that releases the engagement with the rack teeth during the opening movement of the door plate;
A sliding door braking device characterized by: (delete) The braking device for a sliding door according to claim 1, wherein the main gear includes a second tooth-missing portion that releases engagement with the rack teeth during the closing movement of the door plate. The braking device for a sliding door according to claim 1 or 3, wherein the friction means includes an O-ring formed of an elastic member and placed between the main gear and the support gear. . A through-mounting hole is formed in the main gear, and the through-mounting hole is inserted into the main-gear mounting portion of the rotational output shaft;
2. The sliding door brake according to claim 1, wherein the through-mounting hole is formed to have a diameter larger than a cross section of the main gear mounting portion so that the main gear can rotate by one tooth with respect to the rack teeth. Device.