JP2002121959A - Sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost sliding door device capable of easily and stably braking a sliding door in applying the brake to prevent the abrupt closing of the sliding door. SOLUTION: A braking device 7 mounted onto the side of the sliding door 1 energized in a closing direction by a self-closing device 6 is provided with a rotation body 12 mounted to a horizontal shaft 11 and rotated, inside a body part 8, and filled with a viscous fluid surrounding the rotation body 12. One end of the horizontal shaft 11 projects outward from the body part 8, and a gear 15 is mounted to one end of the horizontal shaft 11 projecting outward from the body part 8. When the sliding door 1 is closed, the gear 15 is rotated being meshed with a long-sized rack 16 provided parallel with a rail 3, and the rotation is transmitted to the rotation body 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door device for braking a sliding door when the sliding door is urged in a closing direction by a self-closing device.

[0002]

2. Description of the Related Art Conventionally, many sliding doors are provided with a self-closing device for urging the sliding door in a closing direction. When the sliding door is released, the sliding door is rapidly closed by inertia. There is a known device provided with a braking device to solve this problem. As this braking device, there is a hydraulic device or a pneumatic device combining a piston and a cylinder, but there is a problem that the manufacturing process requires precision and the price is high. There are also viscous fluid devices that combine gears, but the speed adjustment mechanism is built into the braking device itself, which complicates the structure and increases the price. The gears are difficult to mesh when performing the action, the gears do not mesh, or there is an impact sound when meshing,
In addition, there is a problem in that the sliding door may stop during the closing movement of the sliding door due to damage caused by poor meshing of the gears.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the sliding door can be easily and stably braked when performing a braking action for preventing the sliding door from closing suddenly. An object of the present invention is to provide a sliding door device at low cost.

[0004]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides a brake device mounted on a sliding door which is biased in a closing direction by a self-closing device, which is mounted on a horizontal shaft inside a main body. One end of the horizontal shaft protrudes outward from the main body, and one end of the horizontal shaft protrudes outward from the main body. A gear is attached via a one-way clutch, the gear meshes with an elongated rack provided horizontally when the sliding door is closed, rotates, and transmits the rotation to the rotating body. It is the gist. Further, the present invention has a gist that the rack mounting position is variable, and the braking distance can be adjusted by changing the rack mounting position. Further, the present invention is characterized in that soft buffer members are provided at both ends in the length direction of the rack.

[0005] With this configuration, for a sliding door that closes automatically,
A constant braking force is obtained by the engagement between the gears of the braking device and the rack, and the sliding door self-closing speed (time) can be obtained by moving the rack to any position and mounting it, or by increasing or decreasing the braking distance. Can be easily adjusted. Also,
The soft cushioning members provided at both ends of the rack can provide smooth meshing of the gear with the rack, resulting in impulsive sound when the gear meshes with the rack, and damage due to poor meshing. In addition, the sliding door is easily and stably braked.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment shown in FIGS. 1 to 3 will be described. Reference numeral 1 denotes a sliding door provided for opening and closing an entrance 2 of a building, and the sliding door 1 is provided horizontally above the entrance 2. The door 2 is configured to slide between a closed state and an open state along the provided rail 3. That is, a hanger 5 having a roller 4 mounted on the rail 3 is attached to the upper end of the sliding door 1 on the right and left when the sliding door 1 is viewed from the front, and slides along the rail 3. Reference numeral 6 denotes a self-closing device attached to the end of the rail 3 on the side where the sliding door 1 is closed.
The spring is automatically closed by the spring force.

[0007] 7 is a sliding door 1 of the left and right hangers 5.
The main body 8 of the braking device 7 is attached to the hanger 5 by a screw 10 via a bracket 9, and the main body 8 is attached to a hanger 5 located on the opening direction side of the vehicle. A rotating body 12 attached to the horizontal shaft 11 and rotating is housed in the inside 8, and a viscous fluid (not shown) is filled in the main body 8 so as to surround the rotating body 12. The horizontal shaft 11 is supported by a bearing 13 inside the main body 8,
One end of the horizontal shaft 11 protrudes outward from the main body 8, and a gear 15 is attached to one end of the horizontal shaft 11 protruding outward from the main body 8 via a one-way clutch 14. When the sliding door 1 is closed, the gear 15 is parallel to the rail 3 in the vicinity of the position when the sliding door 1 is closed, specifically, in a range between a position just before the sliding door 1 is completely closed and a position completely closed. It is configured to rotate while meshing with a horizontal elongated rack 16 attached to the rail 3, and to transmit the rotation to the rotating body 12. That is, since the viscous fluid surrounds the rotator 12 rotating around the horizontal axis 11 in the main body 8, the rotator 12 receives viscous resistance during rotation, and the braking device 7 Has a constant braking force, and the gear 15 of the braking device 7
Is engaged with the rack 16 during the closing movement of the sliding door 1, a brake (braking force) is applied to the movement of the sliding door 1 in the closing direction, and it is possible to prevent the sliding door 1 from closing suddenly.

By the way, soft shock absorbing members 17 are provided at both ends of the rack 16 in the longitudinal direction. When the gear 15 tries to mesh with the rack 16, poor engagement of the gear 15 and generation of abnormal noise are generated. Is configured to eliminate.

Next, a second embodiment shown in FIGS. 4 and 5 will be described. In the first embodiment, the gear 15 moves from a position immediately before the sliding door 1 is completely closed to a position completely closed. In the second embodiment, the rack 16 is engaged with the rack 16 in a long range between a position where the sliding door 1 starts to close and a position where the sliding door 1 is completely closed. To work. That is, the braking distance in the second embodiment is longer than that in the first embodiment. That is, the first
In the embodiment and the second embodiment, the rack 16
Are the same length, but the braking distance can be adjusted by changing the mounting position of the rack 16.

[0010]

As described above, according to the present invention, a constant braking force is obtained by the engagement of the gear of the braking device and the rack with respect to the self-closing sliding door, and the rack is moved to an arbitrary position. Adjustment of the self-closing speed (time) of the sliding door can be easily performed by mounting and increasing or decreasing the braking distance. Also, the soft cushioning members provided at both ends of the rack can provide smooth gear meshing with the rack, and generate an impact sound when the gear meshes with the rack, or damage due to poor meshing. Without this, the sliding door is easily and stably braked.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a sliding door is opened in a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the braking device.

FIG. 3 is a front view showing a state where the sliding door is closed.

FIG. 4 is a front view showing a state in which a sliding door is opened in a second embodiment of the present invention.

FIG. 5 is a front view showing a state where the sliding door is closed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sliding door 2 Doorway 3 Rail 4 Roller 5 Hanger 6 Self-closing device 7 Braking device 8 Main body 9 Bracket 10 Screw 11 Horizontal axis 12 Rotating body 13 Bearing 14 One clutch 15 Gear 16 Rack 17 Buffer member

Claims (3)

[Claims] A braking device attached to a sliding door urged in a closing direction by a self-closing device includes a rotating body mounted on a horizontal shaft and rotated inside a main body, and a viscous material surrounding the rotating body. Is filled with fluid,
One end of the horizontal shaft protrudes outward from the main body, a gear is attached to one end of the horizontal shaft protruding outward from the main body via a one-way clutch, and the gear is provided horizontally when the sliding door closes. A sliding door device characterized in that the sliding door device is configured to rotate while being engaged with a long rack formed and transmit the rotation to the rotating body. 2. The sliding door device according to claim 1, wherein the rack mounting position is variable, and the braking distance can be adjusted by changing the rack mounting position. 3. A soft cushioning member is provided at both ends in the longitudinal direction of the rack.
The sliding door device as described.