JP2021067069A - Brake device of sliding door - Google Patents

Abstract

To provide a brake device of a sliding door allowing a braking distance by a dumper to be longer.SOLUTION: A brake device 2 of a sliding door arranged in a sliding door panel is provided with: a trigger 3 disengageably arranged on a receiving concave member 31 in a building side; a sliding member 4 slidable relative to the sliding door panel in an engaged state with the trigger; energizing means 5 that is provided between the sliding member and the sliding door panel and energizes the sliding door panel in an open or a close direction in a state where the sliding member engages the trigger; a dumper 6 for dumping the movement of the sliding door panel in an energizing direction of the energizing means; a first rack gear 71 for moving relative to the sliding door panel together with the sliding member; a second rack gear 72 opposed to the first rack gear and fixed on the sliding door panel; and a pinion gear 65 rotatably supported on an end part of the dumper and meshed between the first rack gear and the second rack gear to rotate.SELECTED DRAWING: Figure 5

Description

The present invention relates to a sliding door braking device including a moving partition.

Conventionally, sliding doors that move along guide rails have been installed in the openings of buildings. In recent years, when closing a sliding door, a self-closing sliding door that automatically moves the sliding door to a closed position (a position that completely closes the opening) has been used.

In such a self-closing sliding door, when the sliding door is closed (when it is moved to the closed position), the sliding door vigorously collides with the door frame to generate an impact sound, or the fingers are mistakenly moved between the sliding door and the door frame. It was a problem to put it in between.

In order to solve such a problem, a sliding door braking device that brakes the sliding door in the vicinity of the closed position has been developed. For example, in the slide assist mechanism of Patent Document 1, since the frame body is attached to the roller support as a unit integrated with the guide roller, it depends on the vertical positional relationship when the sliding door is incorporated into the door frame, and the warp or deflection of the wooden sliding door. It has been developed so that the vertical positional relationship between the sliding door side member and the door frame side member is kept constant even if the vertical positional relationship between the sliding door and the door frame changes.

Japanese Unexamined Patent Publication No. 2005-350912

By the way, in the conventional braking device including the slide assist mechanism of Patent Document 1, a trigger that is permanently fixedly installed at a predetermined position on the door frame side is used. For this reason, it could not be applied to sliding doors that are installed and used as needed, such as sliding doors with moving partitions.

Therefore, an object of the present invention is to provide a sliding door braking device that can be applied to a sliding door that is installed and used as needed.

In order to achieve the above object, the sliding door braking device of the present invention is a sliding door braking device that attenuates the movement of the door plate, and is a trigger that protrudes toward the door plate and is provided at a predetermined position on the building side. It has a tsubo receiving member and a retractable shaft member that is held by the door plate and can be inserted into the tsubo receiving member, and can be fixed / moved relative to the building. , A state in which the trigger is movably installed on the door plate side, is configured to be movably engaged with the trigger, is relatively movable to the door plate in a state of being engaged with the trigger, and is not engaged with the trigger. A slide member that is relatively immovable to the door plate, a first end portion is attached to the slide member, and a second end portion is attached to the door plate, and the slide member engages with the trigger. It is provided with an urging means for urging and moving the door plate in the opening direction or the closing direction in the fitted state, and a damper for attenuating the movement of the door plate in the urging direction of the urging means.

As described above, the braking device for the sliding door of the present invention includes a trigger, a slide member, an urging means, and a damper, which can be fixed / moved relative to the building. With such a configuration, by fixing / moving the trigger relative to the building as needed, the sliding door can be braked even for sliding doors that are installed and used as needed, such as moving partitions. The device can be applied.

It is a perspective view which shows the whole structure of the sliding door including the braking device of the sliding door. It is explanatory drawing of the function of the braking device of a sliding door. (A) is an open state, (b) is a braking start time, and (c) is a closed state. It is a perspective view of the braking device of a sliding door. It is a parts drawing which explains by disassembling the structure of the braking device of a sliding door. It is sectional drawing in the open state of the braking device of a sliding door. It is sectional drawing at the time of starting braking of the braking device of a sliding door. It is sectional drawing in the closed state of the braking device of a sliding door. It is a parts diagram which explains the structure of a trigger by disassembling. It is sectional drawing of the trigger in the state which the shaft member is housed. It is sectional drawing of the trigger in the state which the shaft member protrudes. It is a perspective view of a guide roller. It is explanatory drawing explaining the function of a guide roller.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiment, a case where the door plate is suspended and supported by a guide roller (crane) arranged at the upper part will be described, but this is an example and is not limited to this example.

(overall structure)
First, the overall configuration of the moving partition 1 as a sliding door will be described with reference to FIGS. 1 and 2. The moving partition 1 is configured to close the opening 90 by three sliding storage panels 10, 10 and 10 that can be slidably moved and one sliding door panel 11 that can be slidably moved as a door plate. That is, when the moving partition 1 of the present embodiment is not used as a partition, the sliding door panel 11 and the storage panels 10, 10 and 10 are housed in the storage space (door pool) 91.

Of these, as shown in FIG. 2, the sliding door panel 11 is suspended and supported from the upper rails 101 to 103 via the guide rollers 20 and 20 installed on the upper portion. That is, upper rails 101 to 103 (channel members) having a downward C-shaped cross section are attached to the building side, and the guide rollers 20 and 20 run (roll) inside the upper rails 101 to 103. The sliding door panel 11 is slidably moved (opened and closed) in a suspended state. The configuration of the guide roller 20 will be described later.

As shown in FIG. 1, the upper rails 101 to 103 are located at the intersections of the first upper rail 101 extending in the opening / closing direction of the sliding door panel 11 and the second upper rail 102 orthogonal to the first upper rail 101. It is composed of a seam rail 103 to be arranged.

Of these, the first upper rail 101 and the second upper rail 102 are rails having grooves extending linearly. On the other hand, the seam rail 103 is a rail having a T-shaped groove composed of a first groove 103A and a second groove 103B. Therefore, when the sliding door panel 11 is opened / closed (sliding) as a sliding door, the guide roller 20 travels between the first upper rail 101 and the seam rail 103 (described later with reference to FIG. 12).

The sliding door braking device 2 of the present embodiment is installed below the sliding door panel 11. The detailed configuration of the sliding door braking device 2 will be described later. As shown in FIGS. 2A to 2C, the sliding door braking device 2 does not exert a braking function in the open state (see FIG. 2A), and is in the process of moving the sliding door panel 11 in the closing direction. The braking function is exerted from a predetermined position (see FIG. 2B at the start of braking) to a closed state (see FIG. 2C) (soft close).

(Structure of sliding door braking device)
As shown in FIGS. 3 to 4 and 5 to 7, the sliding door braking device 2 is a sliding door braking device 2 that attenuates the movement of the sliding door panel 11 as a door plate, and projects toward the sliding door panel 11. The trigger 3 includes a tsubo receiving member 31 provided at a predetermined position on the building side, and a retractable shaft member 33 that is held by the sliding door panel 11 and can be inserted into the tsubo receiving member 31. The trigger 3 is movablely installed on the sliding door panel 11 side so that it can be fixed / moved relative to the building, and is configured to be detachable from the trigger 3 and engaged with the trigger 3. A slide member 4 that is relatively movable to the sliding door panel 11 in the state and relatively immovable to the sliding door panel 11 without engaging with the trigger 3 and a first end portion are attached to the slide member 4. At the same time, the second end is attached to the sliding door panel 11, and the sliding door panel 11 is urged and moved in the opening direction or the closing direction in a state where the slide member 4 is engaged with the trigger 3. A first rack gear 71 and a first rack gear 71, which are provided with a damper 6 for dampening the movement of the sliding door panel 11 in the urging direction of the force means 5, and further move relative to the sliding door panel 11 together with the slide member 4. The second rack gear 72, which faces the rack gear 71 and is fixed to the sliding door panel 11, is rotatably supported at the end of the damper 6, and meshes between the first rack gear 71 and the second rack gear 72 to rotate. It is equipped with a pinion gear 65 and a door.

Explaining this for each component, that is, for each group of configurations, as shown in FIGS. 3 and 4, the sliding door braking device 2 includes a trigger 3, a slide member 4, an urging means 5, and a damper 6. It is composed of a case 80 integrated with the sliding door panel 11 and a rail 81. Of these, the configuration of the trigger 3 will be described later.

The slide member 4 is rotatably supported by one end of a first member 51 (integrated with the first rack gear 71) of the urging means 5, which will be described later, via a rotating shaft 41. The engaging notch 42 that engages with the trigger 3 and the sliding shaft 43 that is arranged on the opposite side of the engaging notch 42 with respect to the rotating shaft 41 are provided. The rotating shaft 41 projects from the side of the slide member 4 and slides in the sliding groove 80a of the case 80.

The sliding shaft 43 is arranged in either the sliding groove 80a or the fixing groove 80b of the case 80 by the swing of the slide member 4. That is, when the slide member 4 engages with the trigger 3 and swings, the slide member 4 is removed from the fixing groove 80b and moved to the sliding groove 80a. On the other hand, if the slide member 4 is not engaged with the trigger 3, it stays in the fixing groove 80b.

That is, when the slide member 4 engages with the trigger 3, the urging means 5 and the damper 6 are unlocked and function, and if the slide member 4 is not engaged with the trigger 3, the urging means 5 and the damper 6 are unlocked and function. 5 and damper 6 are locked and do not function.

The urging means 5 includes springs 54 and 55 installed in a state of being contracted to the front side (right side in FIG. 4) in the direction of urging the sliding door panel 11 with respect to the slide member 4, and the springs 54 and 55. It is composed of a tubular first member 51, a second member 52, and a third member 53, which are nested (telescope-shaped) guides for guiding. The first spring 54 acts between the first member 51 (composed of the upper member 510 and the lower member 511) and the second member 52, and the second spring 55 is the second member 52 and the third member 52. It acts between members 53. The spring may be a single unit, and the guide may not be nested.

A first rack gear 71 is formed on the upper surface of the outermost first member 51 (upper member 51a) along the opening / closing direction of the sliding door panel 11. Further, the above-mentioned slide member 4 is swingably supported at one end of the first member 51 via a rotating shaft 41, and at the other end is a sliding shaft that slides in the sliding groove 80c of the case 80. 71a is supported. Further, a protrusion 52a is formed on the side surface of one end of the second member 52 so as to slide in the sliding groove 80d of the case 80.

The damper 6 is an oil damper or an air damper mainly composed of a cylinder 61 and a rod 62, and is inserted into the tubular shape of the housing 60. A holding member 63 is attached to the tip of the rod 62 in the damper 6 of this embodiment. A pinion gear 65 is rotatably supported on the holding member 63 via a rotating shaft 64.

As described above, the first rack gear 71 is formed on the upper surface of the first member 51 of the urging means 5. Therefore, the first rack gear 71 moves relative to the sliding door panel 11 together with the slide member 4. Further, the second rack gear 72 is fixed to the sliding door panel 11 side facing the first rack gear 71 (formed on the downward surface of the housing 60). In other words, the second rack gear 72 is attached downward to the top side of the case 80 fixed to the sliding door panel 11.

A pinion gear 65 attached to the tip of the rod 62 of the damper 6 is arranged between the upward first rack gear 71 and the downward second rack gear 72, and rolls between the rack gears 71 and 72 on the principle of rollers. It is designed to do. In other words, when the second rack gear 72 moves in the first direction (for example, the closing direction) by the urging means 5, the pinion gear 65 rotates and the first rack gear 71 moves in the second direction (opposite to the first direction). (For example, the opening direction). At that time, the pinion gear 65 moves in the second direction relative to the first rack gear 71, and also moves in the first direction relative to the second rack gear 72.

The case 80 is formed of a synthetic resin or the like in a U-shape with an open lower portion, and has three sliding grooves 80a, 80c, 80d and one fixing groove 80b on the side surface along the opening / closing direction. And are formed. Of these, the uppermost sliding groove 80c guides the sliding shaft 71a of the first member 51 in the opening / closing direction. Further, the sliding groove 80a connected to the fixing groove 80b guides the slide member 4 (sliding shaft 43) and the first rack gear 71 (rotating shaft 41 of the first member 51 integrated with the sliding member 51) in the opening / closing direction. It is a thing. Further, the lowermost sliding groove 80d guides the urging means 5 (the protrusion 52a of the second member 52) in the opening / closing direction.

The rail 81 is formed in a U-shape with an open lower portion as a whole, and U-shaped rail members 81a and 81a open inward to the left and right of the lower portion of the inner surface are formed. Then, the case 80 is fitted onto the left and right rail members 81a and 81a. Further, the left and right sliding pieces 32c and 32c of the trigger 3 are fitted to the left and right rail members 81a and 81a, respectively, so that the trigger 3 can slide in the rail members 81a and 81a.

As described above, the slide member 4 swings around the rotation shaft 41. When the sliding door panel 11 is closed, the sliding shaft 43 of the slide member 4 is located in the fixing groove 80b of the case 80, so that the slide member 4 moves together with the sliding door panel 11. Then, when the engagement notch 42 of the slide member 4 collides with the engagement piece 32b of the trigger 3 (corresponding to the start of braking in FIG. 1B), the slide member 4 that receives the reaction force from the engagement piece 32b rotates the shaft. The sliding shaft 43 rotates clockwise around 41, escapes from the fixing groove 80b, and moves into the sliding groove 80a.

(Overall action of braking device)
Next, the overall operation of the sliding door braking device 2 of this embodiment will be described with reference to FIGS. 5 to 7.

First, the operator tries to close the sliding door panel 11 by hand. The open state is maintained until the braking start state described later. As shown in FIG. 5, when the sliding door panel 11 is in the open state, the slide member 4 is not engaged with the trigger 3, and the slide shaft 43 of the slide member 4 is in the fixing groove 80b. Therefore, the springs 54 and 55 of the urging means 5 are not released and remain contracted. Therefore, the first rack gear 71, the pinion gear 65, and the second rack gear 72 do not move, and the damper 6 does not work either.

Then, when the sliding door panel 11 moves further, it shifts at the start of braking. The operator may take his / her hand off the sliding door panel 11 in this state. As shown in FIG. 6, at the start of braking, the slide member 4 collides (engages) with the trigger 3, the slide member 4 swings, and the sliding shaft 43 escapes from the fixed groove 80b to the sliding groove 80a. .. Then, the slide member 4 and the first rack gear 71, the second rack gear 72, and the sliding door panel 11 can be relatively moved. Therefore, the springs 54 and 55 of the urging means 5 are released and try to extend. That is, the urging means 5 pushes the sliding door panel 11 together with the case 80 in the closing direction without changing the position of the first rack gear 71 (in the absolute coordinate system). Therefore, the second rack gear 72 integrated with the sliding door panel 11 moves in the closing direction relative to the first rack gear 71. Along with this, the pinion gear 65 sandwiched between the two rack gears 71 and 72 rotates and moves in the opening direction (in the absolute coordinate system), and the damper 6 works.

At this time, the moving distance of the pinion gear 65 in the opening direction is halved of the relative moving distance of the first rack gear 71 and the second rack gear 72. Conversely, if the stroke of the damper 6 is constant, the relative moving distance between the two rack gears 71 and 72 is twice the stroke.

After that, when the slide member 4 moves to the end, the sliding door panel 11 finishes moving and is closed (see FIG. 7). When the operator manually opens the sliding door panel 11, the sliding door panel 11 is manually moved against the urging force of the urging means 5, and when the position is the same as when braking is started, the slide member 4 slides. The moving shaft 43 moves (falls off) from the sliding groove 80a to the fixed groove 80b. Then, the engagement between the slide member 4 and the trigger 3 is released, and the urging means 5 is in a contracted state.

(Trigger configuration)
Next, the configuration of the trigger 3 of this embodiment will be described. The trigger 3 of this embodiment has a tsubo receiving member 31 installed at a predetermined position on the building side, and a retractable shaft member 33 that is held by the sliding door panel 11 and can be inserted into the tsubo receiving member 31. There is. Therefore, when the shaft member 33 is inserted into the tsubo receiving member 31, it is relatively fixed to the building, and when the shaft member 33 is removed from the tsubo receiving member 31, it can be relatively movable to the building.

More specifically, the trigger 3 further includes a trigger member 32 as a main body, a lever member 34, and rotating shafts 35 and 36, in addition to the tsubo receiving member 31 and the shaft member 33. The tsuba receiving member 31 is composed of a flange plate and a cylindrical portion protruding downward from the flange plate, and the cylindrical portion is press-fitted into a circular hole provided on the building side and fixed to the building side.

The trigger member 32 includes an engaging piece 32a that engages with the slide member 4, a cushioning member 32b that is attached to the engaging piece 32a, and left and right sliding pieces 32c that slide by being fitted to the rail member 81a of the rail 81. And a protruding piece 32d for recovering from a malfunction.

The trigger member 32 of the present embodiment is a lever member 34 connected to the shaft member 33, which protrudes from the end surface of the sliding door panel 11 and is manually moved up and down (the rotation shaft 35 is a rotation shaft). The lever member 34 is further provided so that the shaft member 33 appears and disappears toward the tsubo receiving member 31.

That is, the trigger member 32 is provided with a circular sliding hole from below, and the shaft member 33 is housed in the sliding hole so as to be able to appear and disappear in the vertical direction. A lever member 34 is rotatably connected to the upper portion of the shaft member 33 (with the rotating shaft 36 as the rotating shaft), and the lever member 34 (rotatably installed on the trigger member 32). By swinging the shaft member 33, the shaft member 33 moves up and down.

As shown in FIGS. 9 and 10 to be described later, the lever member 34 is provided with balls 34a, 34a and a spring 34b in the middle, and in the accommodation posture (posture of FIG. 9), the balls are placed in the recesses 32e. When the 34a falls, the lever position is held downward, and in the protruding posture (posture of FIG. 10), the ball 34a falls into the recess 32f to hold the lever position upward.

Therefore, in the accommodation posture shown in FIG. 9, since the lever member 34 is located below, the shaft member 33 on the opposite side is located above via the rotating shaft 35, so that the shaft member 33 is the trigger member 32 (= main body). It will be in a state of being housed inside the part). Then, the shaft member 33 is not inserted into the tsubo receiving member 31, and the trigger 3 can move without being restrained by the tsubo receiving member 31.

On the other hand, in the protruding posture shown in FIG. 10, since the lever member 34 is located above, the shaft member 33 on the opposite side is located below via the rotating shaft 35, so that the shaft member 33 is the trigger member 32 (= main body). It will be in a state of protruding to the outside of the part). Then, the shaft member 33 is inserted into the tsubo receiving member 31, and the trigger 3 is restrained and fixed at the position of the tsubo receiving member 31.

(Structure of guide roller)
Here, the configuration of the guide roller 20 will be briefly described with reference to FIG. As shown in FIG. 11, the guide roller 20 of this embodiment is a crane, that is, a guide roller 20, which is installed on the upper part of the sliding door panel 11, and has a total of six wheels 21, ..., 22, ... I have. Of these, the four wheels 21, ... Of the two axles and four wheels, travel on the first upper rail 101 extending in the opening and closing direction, and the two wheels 22, ... Of the two axles and two wheels, are the first upper rail 101. It travels on the second upper rail 102 orthogonal to.

Next, the operation of the guide roller 20 will be described with reference to FIG. The sliding door panel 11 may be arranged at a position closest to the storage space (door pool) 91 among the panels constituting the moving partition 1 (see FIG. 1). Then, as shown in FIG. 12, the guide roller 20 may travel in the seam rail 103.

At this time, by mounting the two-axis four-wheel wheels 21, ... In the opening / closing direction as in the present embodiment, one wheel 21 is provided in the groove 103b (connected to the second upper rail 102) in the storage direction. Although it falls, the remaining three wheels 21, ... Do not fall into the groove 103b and are supported by the seam rail 103. Further, traveling in the seam rail 103 in this way is a state in which the braking device 2 is functioning, that is, a state in which the sliding door panel 11 is moving by a weak force due to the elastic force of the springs (54, 55). Therefore, it is particularly effective that the three wheels 21, ... Do not fall into the groove 103b in this way.

(effect)
Next, the effects of the sliding door braking device 2 of this embodiment will be listed and described.

(1) As described above, the sliding door braking device 2 of the present embodiment is a sliding door braking device 2 that attenuates the movement of the door plate, and is a trigger that projects toward the movable sliding door panel 11 as the door plate. No. 3, which includes a tsubo receiving member 31 provided at a predetermined position on the building side, and a retractable shaft member 33 that is held by the movable sliding door panel 11 and can be inserted into the tsubo receiving member 31. The trigger 3 is movably installed on the sliding door panel 11 side so that it can be fixed / moved relative to the building, and is configured to be detachable from the trigger 3 and engages with the trigger 3. A slide member 4 that is relatively movable to the sliding door panel 11 in this state and is relatively immovable to the sliding door panel 11 without engaging with the trigger 3, and a first end portion is attached to the slide member 4. At the same time, the second end is attached to the sliding door panel 11, and the sliding door panel 11 is urged and moved in the opening direction or the closing direction in a state where the slide member 4 is engaged with the trigger 3. A damper 6 for dampening the movement of the sliding door panel 11 in the urging direction of the urging means 5 is provided. With such a configuration, by fixing / moving the trigger 3 relative to the building as needed, the sliding door can be installed and used as needed, for example, as a moving partition. Braking devices can be applied.

(2) Further, the trigger 3 is a lever member 34 connected to the shaft member 33, which protrudes from the end surface of the sliding door panel 11 and is moved up and down by hand to make the shaft member 33 a tsubo receiving member. It further has a lever member 34 that appears and disappears towards 31. Therefore, the shaft member 33 can be made to appear and disappear by a simple operation.

(3) Further, a first rack gear 71 that moves relative to the sliding door panel 11 together with the slide member 4, a second rack gear 72 that faces the first rack gear 71 and is fixed to the sliding door panel 11, and a damper 6. It is preferable to include a pinion gear 65 that is rotatably supported at the end of the door and that meshes with and rotates between the first rack gear 71 and the second rack gear 72. According to such a configuration, since the moving distance of the pinion gear 65 with respect to the sliding door panel 11 becomes the braking distance of the entire braking device, the braking distance can be made longer than the stroke of the damper 6.

For example, when the pinion gear 65 makes one rotation, the upper second rack gear 72 moves with respect to the lower first rack gear 71 by two rotations of the pinion gear 65. That is, the moving distance (= braking distance) of the second rack gear 72 is twice the moving distance of the pinion gear 65. In other words, the braking distance is twice the stroke of the damper 6.

(4) Further, the sliding door panel 11 is preferably a partition panel (10, 11) that can move along the upper rails 101 to 103.

(5) Further, the above-mentioned sliding door braking device 2; the first upper rail 101 extending in the opening / closing direction of the sliding door panel 11; the second upper rail and 102 extending in the direction orthogonal to the first upper rail 101; the first upper part. A seam rail 103 arranged at an intersection of the rail 101 and the second upper rail 102, the first groove 103a connected to the first upper rail 101 and the second groove 103b connected to the second upper rail 102. The joint rail 103 and the guide roller 20 attached to the upper part of the sliding door panel 11; the two-axis four-wheel wheels 21 running on the first upper rail 101 and the first groove 103a, ..., And the second upper part. It is preferable to include a guide roller 20 having uniaxial and two-wheel wheels 22 and 22 traveling on the rail 102 and the second groove 103b. With such a configuration, when the guide roller 20 travels on the joint rail 103, one wheel 21 falls into the groove 103b (connected to the second upper rail 102) in the storage direction, but the remaining three wheels. 21, ... Will be supported by the seam rail 103 without falling into the groove 103b.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design changes to the extent that the gist of the present invention is not deviated are described in the present invention. included.

For example, in the embodiment, the sliding door braking device 2 that functions near the stroke end when closing the sliding door panel 11 has been described as an example, but the present invention is not limited to this, and the stroke when opening the sliding door panel 11 is not limited to this. Of course, it can also be configured as a braking device for a sliding door that functions near the end.

1 Moving partition 10 Storage panel 11 Sliding door panel 2 Sliding door braking device 3 Trigger 20 Guide roller 21, 22 Wheel 31 Tsubasa member 32 Trigger member 33 Shaft member 34 Lever member 35, 36 Rotating shaft 4 Sliding member 41 Rotating shaft 42 Engagement Notch 43 Sliding shaft 5 Biasing means 51 First member 52 Second member 53 Third member 54 First spring 55 Second spring 6 Damper 65 Pinion gear 71 First rack gear 72 Second rack gear 80 Case 80a Sliding groove 80b Fixed groove 81 Rail 90 Opening 91 Storage space (door pool)
101 1st upper rail 102 2nd upper rail 103 Seam rail

Claims (5)

A sliding door braking device that damps the movement of the door plate.
It is a trigger that protrudes toward the door plate, and has a tsubo receiving member provided at a predetermined position on the building side, and a retractable shaft member that is held by the door plate and can be inserted into the tsubo receiving member. Trigger and, which can be fixed / moved relative to the building
It is movably installed on the door plate side, is configured to be movable with and from the trigger, is relatively movable with respect to the door plate while engaged with the trigger, and is mounted on the door plate without engaging with the trigger. Slide members that are relatively immovable and
The first end is attached to the slide member and the second end is attached to the door plate to urge the door plate in the open or closed direction with the slide member engaged with the trigger. And the means of urging to move
A damper that attenuates the movement of the door plate in the urging direction of the urging means, and
A sliding door braking device. The trigger is a lever member connected to the shaft member, which protrudes from the end surface of the door plate and is moved up and down by hand so that the shaft member appears and disappears toward the tsubo receiving member. The sliding door braking device according to claim 1, further comprising a lever member. A first rack gear that moves relative to the door plate together with the slide member,
A second rack gear that faces the first rack gear and is fixed to the door plate,
A sliding door according to claim 1 or 2, comprising a pinion gear that is rotatably supported at the end of the damper and that meshes and rotates between the first rack gear and the second rack gear. Braking device. The braking device for a sliding door according to any one of claims 1 to 3, wherein the door plate is a partition panel that can be moved along an upper rail. With the sliding door braking device according to claim 4.
With the first upper rail extending in the opening / closing direction of the door plate;
With the second upper rail extending in the direction orthogonal to the first upper rail;
A seam rail arranged at a position where the first upper rail and the second upper rail intersect, and a first groove connected to the first upper rail and a second groove connected to the second upper rail. With seam rails that have;
A crane attached to the upper part of the door plate, which is a two-axis four-wheel wheel traveling on the first upper rail and the first groove, and a one-axis two-wheel traveling on the second upper rail and the second groove. A sliding door braking system, with wheels, and with a crane.

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