JPH0578875U - Sliding door device with brake - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] A sliding door that is hung on a rail along the upper part of the frontage to open and close the frontage, even if the door is opened and closed vigorously. Impact sound is generated,
Providing a sliding door device that does not bounce significantly. [Structure] A suspension vehicle equipped with a brake device 5 is attached to a sliding door on a suspending tool 6 which axially supports a roller 9, and the brake device has a slider 10 biased by a spring force, and the slider is mounted on a rail. A means for controlling the spring force so that sliding friction is generated by the pressure contact and the pressure contact force is increased at a position close to opening and closing is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sliding door device that is suspended from a rail and opens and closes.

[0002]

[Prior Art]

 A suspension vehicle (running tool) is attached to the upper end of the sliding door, and it is hung on the upper rail of the frontage. The hoisting car rolls along the upper rails to open and close the sliding doors, and a cushioning material with a high cushioning property is installed alongside the sliding doors. The cushioning material alleviates the impact force and impact sound generated when opening and closing the sliding door, but if it opens and closes vigorously, it can bounce back against the vertical crosspiece of the frontage and completely open and close the sliding door. Disappear. In other words, even if the sliding door is closed, it will widen due to the bounce phenomenon, and the opened sliding door will hit the vertical rail on the opposite side and narrow the frontage.

As a matter of course, as the sliding door device, there is known a sliding door device configured to eliminate the impact when the sliding door is opened and closed and to prevent the sliding door from bouncing. This type of sliding door device is equipped with a self-closing device and a damper, and also has a stopper device for holding the sliding door in an open state, but it is costly to attach these devices to all sliding doors. This is not realistic. Sliding doors that are entrances and exits of school classrooms cannot be equipped with the above devices, and a simple device using a structure that does not impose a cost burden is desired.

FIG. 8 shows a conventional suspension vehicle which is attached to the upper end of the sliding door and suspends the sliding door. The suspension vehicle has a roller (c) pivotally supported by a horizontal shaft (b) provided on the suspension (a) via bearings, and the roller (c) freely rotates without resistance and rolls on the upper rail. .. When a large axial load is applied to the roller (c), the retaining ring (d) is used to prevent the roller (c) from slipping off if the retaining ring comes off due to the axial load. To disengage from the bearing.

[0005]

[Problems to be solved by the present invention]

 As described above, the conventional sliding door device has the above-mentioned problems. The problems to be solved by the present invention are these problems, and provide a sliding door device with a brake which prevents the sliding door from bouncing against the longitudinal rail of the frontage even if it is opened and closed vigorously.

[0006]

[Means for Solving the Problems]

 In the sliding door device of the present invention, a roller is rotatably supported by a shaft provided in a hanging tool, and this point has the same structure as a conventional type suspension vehicle, but a brake device is provided next to the roller. ing. The braking device has a slider, and a spring force is applied to the slider to press it against the rail. A pressing member is provided at the other end of the spring, and the pressing member allows the amount of deformation of the spring to be adjusted depending on the position of the suspension vehicle. If the amount of deformation of the spring changes, the spring force acting on the slider inevitably increases or decreases. Here, means for actuating the pressing member of the spring is provided in the holder of the brake device, and the actuating means actuates the pressing member by abutting on a cam or a vertical rail at the front side along the rail on which the hoisting vehicle travels. ..

[0007]

[Action]

 In the sliding door device of the present invention, the suspension vehicle is configured as described above, and since the slider of the brake device is in pressure contact with the rail surface, as the suspension vehicle moves, it slides on the rail surface and generates sliding friction. To do. Then, the operating means provided in the holder controls the amount of spring deformation, that is, the pressure acting on the slider and the rail surface by moving the pressing member up and down to increase the sliding friction at the position where the sliding door approaches the vertical rail of the frontage. Then, brake the movement of the sliding door. Therefore, the rebound phenomenon of the sliding door is prevented. Hereinafter, embodiments according to the present proposal will be described in detail with reference to the drawings.

[0008]

【Example】

 FIG. 2 shows a general sliding door device, in which two sliding doors 1a and 1b are attached to the frontage, and the frontage is closed. A window is formed above the sliding door, and sliding doors 2a and 2b in which a glass plate is fitted are also attached to the window.

FIG. 3 is a front view showing the sliding door 1 alone. The sliding door 1 has a vertically long rectangular shape, and cushioning materials 3 are provided along both side edges of the sliding door 1. Attached 4, 4 The suspension vehicle 4 is provided with a brake device 5, and the sliding door 1 is suspended from a rail via the suspension vehicles 4 and 4.

FIG. 1 shows an embodiment of a suspension vehicle for a sliding door with a brake according to the present invention, in which a vertical piece 7 of an L-shaped bent hanger 6 is provided with a shaft 8 through which a bearing is mounted. A roller 9 is rotatably supported. A brake device 5 is screwed next to the roller 9, and a slider 10 projects below the brake device 5 to form the suspension vehicle 4, and a horizontal piece 11 is applied to the upper end of the sliding door 1. Be worn. Here, the slider 10 is biased by a spring force, projects downward from the lower end of the roller 9, and can be retracted by an external force acting from below. A roller 12 is attached to the upper end of the brake device 5 and projects upward.

FIGS. 4 a and 4 b show a specific example of the brake device 5. The brake device has a through hole 14 having a stepped portion formed vertically in a central portion of a holder 13, a slider 10 is built in the lower part of the through hole 14, and a pressing member 15 is built in the upper part of the through hole 14. A coil spring 16 is interposed between the two. The lower end of the slider 10 protrudes from the holder 13 without the collar formed on the upper portion locking the step portion of the through hole 14 and dropping, and the pressing member 15 moves up and down along the through hole 14. In a possible state, the roller 12 is rotatably supported.

The pressing member 15 compresses the coil spring 16 and applies a spring force to the slider 10, but the coil spring 16 can be deformed by an external force acting from below the slider 10. Although the pressing member 15 moves up and down, the pressing force of the pressing member 15 is maintained at a predetermined height because the roller 12 is in contact with the rail surface 17 due to the force of upwardly projecting under the influence of the spring force. .. However, a cam 18 is provided along the rail surface 17, and if the roller 12 moves and engages with the cam 18, it is pushed down and the coil spring 16 is compressed by that amount. As a result, the spring force biased by the slider 10 becomes large, and the pressure contact force acting on the rail traveling surface becomes even higher.

FIG. 5 shows a state in which the lower end of the slider 10 is in pressure contact with the rail traveling surface 19, but the sliding friction force increases or decreases due to the change in the pressure contact force acting on the traveling surface 19. That is, if the slider 10 slides on the traveling surface 19 as the suspension vehicle 4 moves, and a frictional force is generated under the influence of the pressing force, the roller 12 engages with the cam 18 and the pressing member 15 descends. For example, due to the increase in the compression amount of the coil spring 16, the pressure contact force is further increased and the sliding friction force is increased. Therefore, in the sliding door device of the present invention, the cam 18 is provided along the rail surface 17 at a position near the opening and closing of the sliding door to increase the sliding frictional force, and as a result, the brake acts on the sliding door that moves vigorously. The slider 10 has a V-shaped groove 20 formed at its lower end and comes into line contact with the traveling surface 19 having an arc, and even if the contact portion is slightly worn due to frictional sliding, the coil spring 16 is deformed so that the pressing force is not applied. Has almost no effect.

FIG. 6 shows another embodiment of the brake device 5. The slider 10 and the coil spring 16 are also attached to the holder 13 in the brake device 5 in the same manner as above, but the form of the pressing member 21 for compressing the coil spring 16 is different and the pressing member 21 is pushed down. The means has a different structure. A damper 22 protruding laterally is attached to the holder 13, a coil spring 23 is provided between the holder 13 and the damper 22, and a cam 25 is fixed to the slide shaft 24. Is moved to the left, the cam 25 having the inclined surface 26 pushes down the pressing member 21. Therefore, when the sliding door 1 approaches the opening and closing of the brake device 5 attached to the suspension vehicle, the damper 22 hits the vertical rail 27, and as a result, the cam 25 pushes down the pressing member 21 and compresses the coil spring 16 to slide the slider. Strengthen the spring force acting on 10. The position where the damper 22 contacts here is not limited to the vertical rail 27, and a stopper may be provided on the rail.

FIG. 7 shows another embodiment of the brake device, in which a slider 29 is fixed to the lower end of a leaf spring 28 and a roller 30 is provided to the upper end, and the middle thereof is pivotally supported by a holder 13. Can be rocked. If the slider 29 is in pressure contact with the rail running surface 19, the roller 30 is in contact with the rail surface 31, and if the roller 30 engages with the cam 32 as the suspension vehicle moves, the leaf spring 28 swings. Then, a large spring force is applied to the slider 29, and as a result, sliding friction increases. As described above, the sliding door device of the present invention is provided with the braking device on the suspension vehicle for suspending the sliding door, and the braking device is configured to operate near the opening and closing of the sliding door. You can get it.

[0016]

[Effect of the device]

 Since the sliding door device of the present invention is provided with a brake device on its suspension vehicle, that is, by providing a slider that presses against the rail and slides, resistance is given to the rolling movement of the roller. Therefore, the opening and closing operation of the sliding door is moderately heavy, and even if it is opened and closed with vigor, it can be opened and closed smoothly without hitting the front vertical rail and rebounding greatly. In particular, the sliding frictional force is controlled so as to become even greater when it is moved close to opening and closing, so there is no impact on the vertical rail, and the opening and closing operation is quiet. Further, by providing the breaking device, even when the sliding door itself is light, a heavy feeling can be obtained during the opening / closing operation.

[Brief description of drawings]

FIG. 1 is a specific example of a suspension vehicle attached to the sliding door device of the present invention.
a is a plan view, b is a front view, and c is a side view.

FIG. 2 is an overall external view of a sliding door device.

FIG. 3 is a front view of a sliding door.

FIG. 4 is a brake device attached to a suspension vehicle, a is a front view,
b is a side view.

FIG. 5 shows a state where the slider of the brake device is in pressure contact with the rail running surface.

FIG. 6 is another specific example of the brake device.

FIG. 7 is another specific example of the brake device.

FIG. 8 is a conventional type suspension vehicle.

[Explanation of symbols]

 1 Sliding Door 2 Sliding Door 3 Cushioning Material 4 Suspended Vehicle 5 Braking Device 6 Lifting Tool 7 Vertical Piece 8 Axis 9 Roller 10 Slider 11 Horizontal Piece 12 Roller 13 Holder 14 Through Hole 15 Pressing Member 16 Coil Spring 17 Rail Surface 18 Cam 19 Traveling Surface 20 V Groove 21 Pressing member 22 Damper 23 Coil spring 24 Slide shaft 25 Cam 26 Inclined surface 27 Vertical bar 28 Leaf spring 29 Slider 30 Roller 31 Rail surface 32 Cam

Claims (1)

[Scope of utility model registration request] 1. A sliding door which is hung on a rail along the upper part of the frontage and which opens and closes the frontage, is provided with a braking device on a suspension vehicle which is attached to the upper end of the sliding door and runs on the rail. A slider that presses against the rail surface and slides, a spring that applies a spring force to the slider, a pressing member that adjusts the amount of deformation of the spring, and means for controlling the pressing member according to the position of the suspension vehicle are provided. A sliding door device with a brake characterized by being provided.