JPH08165840A - Brake device for sliding door - Google Patents

Abstract

PURPOSE: To prevent the braking face of a brake from being stuck with stains. CONSTITUTION: One end of a brake arm 82 is rotatably supported at the lower section of a sliding door 12. A brake roller 96 is pivotally supported at the other end of the brake arm 82. The brake roller 96 is pressed to the face of a rail 94 by the brake arm 82 excited by a spiral spring 92. When the brake roller 96 is inserted into the recess 94A of the rail 94, the brake arm 82 is rotated to the rail 94 side by the spiral spring 92. A brake shoe 72 fitted to the brake arm 82 presses the braking face 70 of a roller 56 from above to brake the roller 56. The roller 56 is braked on the inner peripheral wall side, not on the outer periphery, and the braking effect is not changed by stains on the outer periphery of the roller 56.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door brake device used as a cushioning means when opening and closing a sliding fitting.

[0002]

2. Description of the Related Art Some sliding doors or sliding doors used for entrance doors and partitions of dwelling units are provided with a brake device so that the doors do not come into strong contact with a door stop pillar when opening and closing.

As shown in FIGS. 7 to 9, the brake device 200 is disposed in a housing 206 attached to a lower frame 204 of a sliding door 202. Housing 2
A roller 208 is axially supported on the side wall of 06, and is configured to travel on the rail 94 while supporting the sliding door 202.

A brake block 210 is rotatably supported by a pin 212 on the side wall of the housing 206. The lower end of the brake block 210 (pin 2
A brake roller 218 is pivotally supported on the lower side (below 12). The brake roller 218 is provided with a spring 214 that urges the brake block 210 counterclockwise.
The roller 94 is pressed by the rail 94 to rotate with the roller 208.

A brake shoe 216 having a recessed brake surface 216A, which is substantially the same as the outer shape of the roller 208, is attached to the upper end of the brake block 210 (above the pin 212).

In the brake device 200 having the above structure, the brake device 200 shown in FIG.
When the brake roller 218 is rolling on the flat surface of the rail 94 as shown in FIG.
A clockwise moment acts on the brake shoe 216.
Is not in contact with the roller 208, and the roller 208 is not braked.

On the other hand, the brake roller 218 is the rail 9
4 reaches the arcuate recess 94A provided near the door stop pillar, the brake block 210 rotates around the pin 212, and the urging force of the spring 214 causes the brake shoe 216 to strongly move to the outer peripheral surface of the roller 208. It is pressed and the brake works. This braking effect prevents the sliding door 202 from hitting the door strut strongly.

However, in the structure of the brake device as described above, the outer peripheral surface (braking surface) of the roller 208 is covered with water, dust,
Mud and the like tend to adhere, and the braking effectiveness may be uneven.

Further, a roller 208 is attached to the housing 206.
Since the brake block 210 and the brake block 210 are directly pivotally supported, after the housing 206 is attached to the sliding door 202, according to the installation accuracy of the sliding door 202,
The position of the roller 208 and the brake block 210 cannot be adjusted.

[0010]

In consideration of the above facts, the present invention has a structure in which dirt does not easily adhere to the braking surface of the brake.
Another object of the present invention is to provide a sliding door brake device whose position can be easily adjusted during mounting.

[0011]

A braking device for a sliding door according to a first aspect of the present invention is a roller that supports a lower portion of the sliding door and rolls on a rail, and a back surface of the roller that is formed on the shaft side of the roller. A braking surface in a position, a braking member that presses against the braking surface and brakes the roller, and braking means that operates corresponding to a recess formed in the rail to press the braking member onto the braking surface. It is characterized by having.

A sliding door braking device according to a second aspect of the present invention is
The brake means includes a brake arm whose one end is rotatably supported at a lower portion of the sliding door, a brake roller which is rotatably supported on the other end of the brake arm and rolls on the rail, and a rotatably supported portion of the brake arm. And a biasing means for biasing the brake arm in the direction of rotating to the rail side and pressing the brake roller against the rail surface, wherein the brake member is attached to the brake arm and the brake arm rotates. It is characterized in that it is constituted by a brake shoe which is brought into a crimped state or a non-crimped state with the braking surface depending on the movement.

A sliding door brake device according to a third aspect of the present invention is
The brake means, a brake arm horizontally slidably attached to a lower portion of the sliding door, a rack formed at one end of the brake arm, and a pinion pivotally supported on a lower portion of the sliding door and meshing with the rack. A slide base mounted on the lower part of the sliding door so as to be slidable in the vertical direction and having a rack that meshes with the pinion,
A brake roller that is pivotally supported on the lower end of the slide base and rolls on the rail, and a biasing unit that biases the slide base downward and presses the brake roller against the rail surface. It is characterized in that it is composed of a brake shoe which is attached to the brake arm and is brought into a crimped state or a non-crimped state with the braking surface by the sliding operation of the brake arm.

A brake device for a sliding door according to claim 4 is
It is characterized in that a pair of upper and lower brake arms are provided in parallel.

A sliding door braking device according to a fifth aspect of the present invention is
The roller, the brake member, and the braking means are attached to an inner case, and position adjusting means for fixing the inner case to an outer case attached to a lower portion of the sliding door is provided so that the position adjusting means is provided. It has a feature.

[0016]

In the brake device for a sliding door according to the first aspect of the present invention, the roller supports the sliding door and rolls on the rail so that the sliding door can be opened and closed smoothly.

A braking surface is formed on the shaft side of the roller so as to be back-to-back with the outer peripheral surface of the roller, so that water, dust and the like are unlikely to adhere thereto. A braking member for braking the roller is arranged facing the braking surface, and the braking means operates corresponding to the recess formed in the rail to press the braking member onto the braking surface.

As described above, by adopting the structure in which the inner peripheral wall side of the roller is braked instead of braking the outer peripheral surface of the roller, the braking effect does not change due to the dirt on the outer peripheral surface of the roller.

In the brake device for the sliding door according to the second aspect, one end of the brake arm is rotatably supported by the lower portion of the sliding door. A brake roller is pivotally supported on the other end of the brake arm. This brake roller is
The brake arm is urged by the urging means to press it against the rail surface.

When the sliding door moves and the brake roller fits in the recess of the rail, the urging means causes the brake arm to rotate toward the rail. For this reason, the brake shoe attached to the brake arm presses the braking surface of the roller from above to brake the roller.

As described above, by applying the structure in which one end of the brake arm is pivotally supported and rotated, that is, the principle of lever is applied, the braking force can be adjusted only by changing the length of the brake arm.

In the sliding door braking device according to the third aspect, a brake arm having a rack formed at an end thereof is attached to the lower portion of the sliding door so as to be slidable in the horizontal direction. The rack meshes with a pinion that meshes with a rack formed on a slide base that is vertically slidable.

Therefore, when the slide base is moved up and down,
The pinion rotates and the brake arm slides horizontally.

Here, a brake roller is pivotally supported on the lower end of the slide base, and is pressed against the rail surface by an urging means for urging the slide base downward.

When the sliding door moves and the brake roller fits into the recess of the rail, the biasing means moves the slide base downward. The movement of the slide base causes the brake arm to slide in the horizontal direction, and the brake shoe attached to the brake arm presses the braking surface of the roller laterally to press the roller, thereby braking the roller.

As described above, the structure in which the brake arm is driven by the action of the rack and the pinion is adopted, which is superior in durability to the structure in which the brake shoe is pressed by the biasing means.

In the brake device for the sliding door according to claim 4, a pair of upper and lower brake arms are provided, and the brake shoes attached to the respective brake arms are:
It exerts braking force by pushing the braking surface of the roller outward from the center. Therefore, the braking force of the roller becomes large.

In the sliding door braking device according to the fifth aspect, the roller, the braking member (brake arm), and the braking means (brake roller, slide base, etc.)
It is attached to the inner case. The inner case is fixed by position adjusting means to the outer case attached to the lower part of the sliding door so that the position of the inner case can be adjusted.

Therefore, even if there is an error in assembling the sliding door and the rail surface, the brake device can be attached to the sliding door according to the current situation.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, a brake device 10 according to a first embodiment includes an outer case 18 which is fitted into a storage portion 16 formed in a lower frame 14 of a sliding door 12. Brackets 20 project from both ends of the outer case 18 and are fixed to the lower frame 14 by screws (not shown).

An opening 22 is formed in the lower surface of the outer case 18, and the inner case 24 is mounted in the outer case 18 from below through the opening 22. The inner case 24 includes a rectangular inner cover 26 having an opening at the bottom and one side, and an inner lid 28 for closing the side of the inner cover 26.
It consists of and.

On the top surface of the inner cover 26, raised portions 30 having a substantially trapezoidal shape in a side view are formed at a predetermined interval. The inclined surface 30A of the raised portion 30 is in contact with the inclined surface 32A of the triangular column-shaped protrusion 32 that is provided on the back side of the top surface of the outer case 18.

An inclined elongated hole 34 is formed in the side wall of the outer case 18. In this long hole 34,
Shafts 36 projecting from the outer sides of the inner cover 26 and the inner lid 28 are inserted and supported.

On the other hand, a vertically long rectangular opening 38 is formed on the end wall of the outer case 18. A reinforcing plate 40 is fixed to the outer surface of the rectangular opening 38 with a screw 42. The lower end of the reinforcing plate 40 is inserted into the slit 44 formed in the bracket 20. A rectangular opening 46 is formed at the center of the reinforcing plate 40 and communicates with the rectangular opening 38.

The leg portions of the height adjusting screw 48 are inserted into the rectangular openings 38 and 46, and are screwed into the screw holes 50 formed in the end wall of the inner cover 26. The head of the height adjusting screw 48 is set to be larger than the hole width of the rectangular opening 38 so that the inner case 24 is fixed to the outer case 18.

As a result, from the state shown in FIG. 2, when the screwing amount of the height adjusting screw 48 and the screw hole 50 is increased, the inner case 24 is pulled to the left side in the drawing, and the inclined surface 30A and the inclined surface 32A. And slide, inner case 2
4 is lowered relative to the outer case 18. At this time, the shaft portion 36 of the inner case 24
Moves along the slanted long hole 34, and thus does not hinder the position adjustment.

On the other hand, a through hole 52 is formed in the center of the side portion of the inner cover 26. A collar 54 is provided inside the through hole 52. This color 54
A dent portion (not shown) formed on the back side of a boss 58 provided upright from the shaft portion of the roller 56 is rotatably engaged therewith.

The pin 60 inserted from the outside of the through hole 52 is inserted into the boss 58 and pivotally supports the roller 56. A notch 62 is formed on the peripheral surface of the tip of the pin 60. The tip of the pin 60 penetrates a circular hole 64 formed in the inner lid 28, and a washer 66 fitted in the notch 62 prevents the pin 60 from coming out of the circular hole 64.

On the other hand, the roller 56 is formed in a circular recess around the boss 58, and the inner peripheral wall back-to-back with the running surface 68 serves as a braking surface 70 for braking. A brake shoe 72 is arranged between the braking surface 70 and the boss 58 so as to face the braking surface 70.

The brake shoe 72 has a block-shaped shoe base 74. This shoe base 72
Two claws 76 are erected on the upper surface of the. A shoe material 78 is wound around the lower surface of the shoe base 72, and both ends of the shoe material 78 are locked by the claws 76.

Further, a long locking hole 80 is formed on the side surface of the shoe base 72. A holding piece 84 formed by cutting the center of the brake arm 82 and bending the uncut portion is inserted into the locking hole 80.
As a result, the brake shoe 72 is held at a position facing the braking surface 70.

The brake arm 82 is the inner case 2
The size is such that it can be stored in 6 and the shaft hole 8 is at one end.
6 is formed. A pin 88 supported by a boss 90 is inserted into the shaft hole 86, so that the brake arm 82 can be rotated around the boss 90.

A winding spring 92 is inserted through the boss 90. One end of the winding spring 92 contacts the upper end of the brake arm 82 and the other end contacts the inner wall of the inner cover 26. Thereby, the free end of the brake arm 82 is biased toward the rail 94.

A shaft plate 94 is formed at a free end of the brake arm 82 at a predetermined interval. A brake roller 96 is arranged between the shaft plates 94, and is rotatably supported by a pin 98. This pin 9
An annular notch 100 is formed at the tip of 8.
A washer 102 is fitted into the cut 100,
The pin 100 is prevented from slipping out.

Next, the operation of the brake system according to this embodiment will be described. As shown in FIG. 2, the roller 56 and the brake roller 96 travel on the flat surface of the rail 94, so that the sliding door 12 can be smoothly opened and closed.

At this time, although the brake arm 82 is pressed toward the rail 94 by the winding spring 92, its rotation is restricted by the brake roller 96 provided at the free end. The braking surface 70 is not in a pressure-bonded state.

Here, as shown in FIG. 3, when the brake roller 96 falls into the recess 94A provided in the vicinity of the door stop pillar of the rail 94, the brake spring 82 causes the brake arm 82 to rotate toward the rail 94. . Therefore, the brake shoe 72 attached to the brake arm 82 presses the braking surface 70 of the roller 56 from above to brake the roller 56.

As described above, by applying the lever principle, it is possible to adjust the braking force only by changing the length of the brake arm 82.

Further, since the braking surface 70 is provided not on the running surface 68 side of the roller 56 but on the inner peripheral wall side, it is difficult for water, dust and the like to adhere. As a result, it is possible to avoid a decrease in the braking force due to dirt on the roller 56.

The inner case 26 is rotated by turning the height adjusting screw 48 so that the outer case 18 is not rotated.
Since it is movable relative to the sliding door 12, the brake device 10 can be attached according to the current situation even if there is an error in assembling the sliding door 12 and the rail 94.

Next, a brake system for a sliding door according to the second embodiment will be described. As shown in FIGS. 4 to 6, the outer case 106 and the inner case 108 have a position adjusting function as in the first embodiment, but in the second embodiment, the long holes 110 are formed in parallel. The long hole 110
The shaft portion 112 inserted into the inner cover 114 and the inner lid 116 that form the inner case 108.
Is projected from the outer surface. As described above, in the second embodiment, the inner case 108 has two points (two shaft portions 11).
Stability is improved by supporting in 2).

A slide base 122, which is partially covered with a side plate 118 and has a rectangular parallelepiped shape, is housed at the opening-side end of the inner cover 114 so as to be vertically slidable. A long hole 120 is formed in the vertical direction in the side plate 118, and a shaft portion 124 protruding from the side surface of the slide base 122 is inserted therein. This shaft portion 124 is a long hole 120
And the slide base 122 slides in the vertical direction.

The center of the lower end of the slide base 122 is cut out in a rectangular shape to form shaft pieces 126 on both sides. A shaft hole 128 is formed in the shaft piece 126. A notch 130 communicating with the shaft hole 128 is formed below the shaft hole 128. By press-fitting the shaft 134 of the brake roller 132 through the notch 130, the brake roller 132 is rotatably supported by the shaft piece 126, while the protrusion 136 is provided on the upper surface of the slide base 122. This protrusion 136 has a spring 13
The lower end of 8 is fitted. The upper end of the spring 138 is fitted in a protrusion 140 formed on the upper back surface of the inner cover 114. As a result, the slide base 122 is biased toward the rail 94.

A plate is extended from the side surface of the slide base 122, and a rack 142 extending in the vertical direction is formed at the tip of the plate. The rack 142 meshes with the side portion of the pinion 144 pivotally supported by the inner case 108.

On the other hand, on the back surface of the side wall of the inner cover 114, pins 146 are provided so as to project laterally at predetermined intervals. A pin 148 is provided so as to project laterally at a predetermined distance from the pin 146 by shifting the position in the vertical direction.

Each of the pins 146 has a long hole 154 formed in the long plate-shaped brake arm 150.
A long hole 156 formed in the brake arm 152 is loosely fitted in the pin 148, and the brake arms 150 and 152 are slidable in the lateral direction.

The brake arm 150 and the brake arm 152 are arranged in parallel, and racks 158 and 160 are formed facing each other on the side of the slide base 122. The racks 158 and 160 mesh with the upper and lower parts of the pinion 144.

With this structure, when the slide base 122 moves in the vertical direction, the pinion 144 engaged with the rack 142 rotates. This pinion 144
The rotation of the brake arm 150 allows the brake arm 150 and the brake arm 152 to slide in opposite directions via the racks 158 and 160.

Further, the brake arms 150 and 152 have brake shoes 162 and 16 having a substantially semi-circular plate shape, respectively.
4 are formed.

On the other hand, a boss 166 is provided at the center of the pin 146 and the pin 148. The boss 166 has a shaft 17 protruding from the shaft of the roller 168.
One end of 0 is pivotally supported. The other end of the shaft 170 is pivotally supported by a boss (not shown) formed on the inner lid 116.

Inner cover 11 of this roller 168
The fourth side is provided with a circular recess, and an inner peripheral wall that is back-to-back with the running surface 172 serves as a braking surface 174 for braking. The shaft 1 is arranged so as to face the braking surface 174.
The brake shoes 162, 164 are positioned so as to sandwich 70.

Next, the operation of the brake system according to this embodiment will be described. As shown in FIG. 5, since the roller 168 and the brake roller 132 travel on the flat surface of the rail 94, the sliding door 12 can be opened and closed smoothly.

At this time, although the slide base 122 is pressed toward the rail 94 by the spring 138,
The brake roller 132 provided at the lower end restricts the downward movement. Therefore, the pinion 144
Does not rotate, the braking surface 174 and the brake shoe 1
62 and 164 are in a non-pressure-bonded state.

Here, as shown in FIG. 6, when the brake roller 132 falls in the recess 94A formed in the rail 94 near the door stop pillar, the spring 138 causes the slide base 122 to descend to the rail 94 side. Therefore, the pinion 144 that meshes with the rack 142 rotates clockwise. This torque causes the rack 158 to slide the brake arm 150 to the right and the rack 160 slides the brake arm 152 to the left.

As a result, the braking surface 1 of the roller 168 is
The brake shoes 162, 164 are pressed to spread 74 from the center to the outside, and brake the roller 168. As a result, the sliding door 12 is stopped and does not hit the door stop pillar strongly.

As described above, by adopting the construction in which the brake arm is driven by the action of the rack and the pinion, the brake shoe is crimped by the urging means from the first embodiment.
It is excellent in terms of durability.

[0067]

Since the present invention has the above-mentioned structure, dirt is unlikely to adhere to the braking surface of the brake, and the position adjustment during mounting becomes easy.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a brake device according to a first embodiment.

FIG. 2 is a cross-sectional view showing a state in which a brake of the brake device according to the first embodiment is released.

FIG. 3 is a cross-sectional view showing a braked state of the brake device according to the first embodiment.

FIG. 4 is an exploded perspective view of a brake device according to a second embodiment.

FIG. 5 is a cross-sectional view showing a state in which a brake of the brake device according to the second embodiment is released.

FIG. 6 is a cross-sectional view showing a braked state of a brake device according to a second embodiment.

FIG. 7 is a perspective view showing a state in which a brake device is attached to a lower part of a sliding door.

FIG. 8 is a cross-sectional view showing a state in which a brake of a conventional brake device is released.

FIG. 9 is a cross-sectional view showing a state where a brake of a conventional brake device is effective.

[Explanation of symbols]

 18 Outer Case 24 Inner Case 30 Protrusion (Position Adjusting Means) 32 Protrusion (Position Adjusting Means) 56 Roller 70 Braking Surface 72 Brake Shoe (Brake Member) 82 Brake Arm (Brake Means) 92 Winding Spring (Biasing Means) 94A Recess 96 brake roller (brake means) 122 slide base 132 brake roller 138 spring (biasing means) 142 rack 144 pinion 150 brake arm (brake means) 152 brake arm (brake means) 158 rack (brake means) 160 rack (brake means) 162 Brake shoes 164 Brake shoes

Claims (5)

[Claims] 1. A roller that supports a lower part of a sliding door and rolls on a rail, a braking surface that is formed on the shaft side of the roller and is in back-to-back position with the outer peripheral surface of the roller, and the roller that is pressed against the braking surface. A brake device for a sliding door, comprising: a brake member for applying a brake; and a brake means that operates corresponding to a recess formed in the rail to press the brake member against the braking surface. 2. The brake means includes a brake arm whose one end is rotatably supported by a lower portion of the sliding door, a brake roller which is rotatably supported by the other end of the brake arm and rolls on the rail, and the brake. The brake member is attached to the brake arm, and the brake member is attached to the brake arm and is configured to urge the brake arm to rotate toward the rail and press the brake roller against the rail surface. The brake device for a sliding door according to claim 1, wherein the brake device is constituted by a brake shoe that is brought into a crimped state or a non-crimped state with the braking surface by the rotation of the brake arm. 3. The brake means, wherein the brake means is horizontally slidably attached to a lower portion of the sliding door, and a rack formed at one end of the brake arm.
A pinion that is pivotally supported on the lower part of the sliding door and meshes with the rack, a slide base that is slidably mounted on the lower part of the sliding door in the vertical direction and a rack that meshes with the pinion is formed, and a pinion is pivotally supported on the lower end of the slide base. A brake roller that rolls on the rail, and a biasing unit that biases the slide base downward to press the brake roller against the rail surface, wherein the brake member is attached to the brake arm and slides the brake arm. The brake device for a sliding door according to claim 1, wherein the brake device is constituted by a brake shoe that is brought into a crimped state or a non-crimped state with the braking surface depending on an operation. 4. The brake device for a sliding door according to claim 3, wherein a pair of upper and lower brake arms are provided in parallel. 5. A position adjusting means for mounting the roller, the brake member, and the braking means on an inner case, and fixing the inner case to an outer case attached to a lower portion of the sliding door so as to be positionally adjustable. It is provided, The brake device of the sliding door in any one of Claim 1 to Claim 4 characterized by the above-mentioned.