JP5691941B2 - Brake device for sliding door - Google Patents

Description

  When the sliding door is closed or opened, the friction resistance force is increased to brake the sliding door, and when the sliding door is moved in the closing direction or in the direction opposite to the opening direction, the friction resistance force is decreased and lightly applied. The present invention relates to a sliding door brake device configured to be moved.

If the operating force for opening and closing the sliding door is greater than necessary and the momentum of moving the sliding door is too strong, the sliding door will hit the frame and make noise, or the sliding door will bounce back and open, so when closing or opening the sliding door There is a brake system for sliding doors configured to brake by increasing the frictional resistance, and to reduce the frictional resistance and move it lightly when moving the sliding door in the direction to close or open the sliding door (for example, Patent Documents 1 and 2).
The brake device for sliding doors of Patent Document 1 is installed in a guide groove of the Kamoi, formed by a longitudinal member along the moving direction of the sliding doors, and a braking member having two substantially parallel surfaces as friction surfaces; An abutting member mounted on the upper portion, capable of abutting and sliding across the friction surface of the braking member, and having a sliding member that generates a frictional resistance force by abutting sliding with the braking member during movement of the sliding door The abutting member is composed of two plate-like members formed in an L-shaped cross section, and the sliding members provided in the vertical part of the plate-like member are arranged to face each other and the horizontal parts are arranged to overlap each other. In the horizontal part, through holes formed in an oblique direction with respect to the moving direction of the sliding door are formed so as to cross each other with the horizontal parts overlapped, and mounting screws loosely fitted in both through holes are provided. The abutting member is a frictional resistance during abutting sliding with the braking member. When the sliding door moves in one direction, the gap between the sliding members will be narrowed, and when the sliding door moves in the opposite direction, the sliding door will be widened so that the gap between the sliding members will increase. It is.
Moreover, the brake device for sliding doors of patent document 2 attaches the braking member receiver formed in the box shape accommodated in the inside of a guide rail to the both ends of the running direction of sliding door upper part, and is on the opposite side to the stopper which a sliding door contacts. A braking member that reduces the traveling speed of the sliding door before the sliding door comes into contact with the stopper by coming into contact with the arranged braking member receiver is attached to a guide member that restricts the movement of the upper part of the sliding door in the front-rear direction. A pair of small piece-like braking plates exposed from the casing body of the casing of the member and abutting against the catch plate of the outer frame member of the braking member receiver, and two support surfaces having opposite angles to support the braking plate, A holding window that opens to the support surface and holds and stops the brake plate and allows a slight amount of sliding along the support surface, and is accommodated inside the casing body of the casing of the guide member to give a tensile force between the brake plates. It is made of a coil spring stretched over Te.

Japanese Patent No. 3423180 JP 2008-63768 A

In the sliding door brake device of Patent Document 1, the abutting member is arranged by overlapping the horizontal portions of two plate-shaped members formed in an L-shaped cross section, and the horizontal portion is in the moving direction of the sliding door. The through holes formed in the diagonal direction are formed so as to cross each other with the horizontal portions overlapped, and provided with mounting screws loosely fitted in both through holes, and the vertical portions are connected to the braking member during the movement of the sliding door When the sliding member is moved in one direction by the frictional resistance force at the time of contact and sliding with the braking member, the distance between the sliding members is maintained. When the sliding door is moved in the reverse direction, the sliding member is configured to be displaced so that the interval between the sliding members is widened, and the manufacturing cost increases due to the relatively large number of parts.
Further, the sliding door brake device disclosed in Patent Document 2 is a pair of small piece brakes whose braking members are exposed from the casing body of the casing of the guide member and are in contact with the catch plate of the outer frame member of the braking member receiver. A plate, two support surfaces that support the brake plate at opposite angles, a mounting window that is opened in the support surface to prevent and lock the brake plate and allows a slight slide along the support surface, and a guide member A coil spring housed in the casing body of the casing and provided with a tension force applied between the two brake plates is provided, and the manufacturing cost increases due to the relatively large number of parts.

  Therefore, in view of the above-mentioned situation, the present invention intends to solve the problem by increasing the frictional resistance when the sliding door is closed or opened, and braking the sliding door so that the sliding door is closed or opened. However, the present invention is to provide a sliding door brake device capable of reducing the manufacturing cost with a simple configuration while reducing the frictional resistance force when moving the handle to a small distance.

  The sliding door brake device according to the present invention is attached to the sliding door opening / closing direction end of the upper frame with which the upper end of the sliding door or the upper end of the sliding door is engaged, in order to solve the above problem. A pair of brake plates extending in the sliding door opening / closing direction and spaced apart in the sliding door width direction, on the sliding door opening / closing direction end of the upper frame engaged with the upper part of the sliding door, or on the upper surface of the sliding door door end side or door butt side end And a brake body having a sliding portion that slides against the inner surface of the brake plate when the sliding door is closed or opened, and the brake body is separated from the base body and the sliding door width direction. A slide body that is slidable in the sliding door opening / closing direction with respect to the base body, and is formed on the outer surface in the sliding door width direction of the slide body, and the base body of the slide body On the side edge A pair of inclined surfaces that approach the base body as it goes outward in the door width direction are formed, and a pair of inclined surfaces that contact the inclined surface of the slide body are formed on the slide body side end surface of the base body. When the sliding body is slid in the sliding door opening / closing direction and separated from each other, the sliding body is sandwiched between the inner surfaces of the brake plates when the sliding door is closed or opened. Is moved together with the brake plate, and the inclined surface of the slide body is abutted by the inclined surface of the base body, and when the sliding door is moved in the direction opposite to the closing or opening direction from this state, The slide body sandwiched between inner surfaces of the plate slides in the sliding door opening / closing direction relative to the base and is separated from the base.

According to such a configuration, the brake body is configured by the base body and the slide body that can slide in the sliding door opening / closing direction with respect to the base body, and slides on the outer surface in the sliding door width direction of the slide body with the inner surface of the brake plate. A sliding portion is formed, and a pair of inclined surfaces approaching the substrate as it goes outward in the sliding door width direction is formed on the substrate side of the slide body, and the slide body side end surface of the substrate contacts the inclined surface of the slide body. A pair of inclined surfaces in contact with each other is formed.
Therefore, when the sliding body is slid in the sliding door opening / closing direction with respect to the base and separated from each other, the sliding body is sandwiched between the inner surfaces of the brake plates when the sliding door is closed or opened. The sliding surface of the slide body is stopped by the inclined surface of the base when it moves with the plate, and the sliding body width side part is separated in the sliding door width direction. The resistance increases and the sliding door is braked suddenly.
In addition, when moving the sliding door in the reverse direction from the closed or open state, the slide body sandwiched between the inner surfaces of the brake plates slides in the sliding door opening / closing direction relative to the base and moves away from the base. Since the base side portion of the slide body is separated in the sliding door width direction, the sliding body is easily elastically deformed in the sliding door width direction, so that the frictional resistance is reduced and the sliding door can be moved easily.
In addition, a pair of brake plates extending in the sliding door opening / closing direction and spaced apart in the sliding door width direction, and the base body, and sliding or sliding with respect to the base body in the sliding door opening / closing direction, when closing or opening the sliding door on the outer surface in the sliding door width direction Since the brake device for sliding doors is composed of a two-piece structure brake body composed of a slide body formed with a sliding portion that slides on the inner surface of the brake plate when cutting, the structure is simple, Cost can be reduced.

Here, the angle formed by the horizontal direction along the inclined surface of the slide body and the sliding door opening / closing direction is preferably about 45 °.
According to such a configuration, when the sliding door is closed or opened, the inclined surface of the slide body is stopped by the inclined surface of the base body, and the sliding door is separated from the base body side portion of the slide body separated in the sliding door width direction. When the angle between the horizontal direction along the inclined surface of the slide body and the sliding door opening / closing direction is large, while increasing the frictional resistance force by applying an outward force in the width direction and ensuring the function of suddenly braking the sliding door Phenomenon that occurs when the braked sliding door rebounds in the direction that closes or opens the sliding door or in the direction opposite to the opening direction, or when the angle is small, the sliding door gradually and after the sliding door is fully closed or opened. Occurrence of the phenomenon of moving in the opposite direction can be suppressed.

Moreover, it is preferable to form a protrusion inserted between a portion of the slide body separated in the sliding door width direction between the pair of inclined surfaces of the base.
According to such a configuration, in a state in which the protrusion is inserted between the portions separated in the sliding door width direction of the slide body, the sliding body width side inward of the sliding body base portion separated in the sliding door width direction. Therefore, it is possible to ensure the magnitude of braking force (brake effectiveness) due to sliding between the sliding portion formed on the outer surface of the sliding body in the sliding door width direction and the inner surface of the brake plate.
In addition, even if a force that moves the inclined surface of the slide body away from the inclined surface of the base body after the collision is applied to the slide body, the inclined surface of the slide body is stopped by the inclined surface of the base body. Since the braking force that suppresses the movement of the slide body is increased, the sliding door that moves together with the slide body can be prevented from moving away from the vertical frame.

Furthermore, it is preferable that a taper surface is formed on the inner surfaces of the pair of brake plates so that the distance between the sliding doors in the width direction is wider when the sliding door is closed or opened.
According to such a structure, it acts on a sliding door by the taper surface formed in the inner surface of a pair of brake plates, and the space | interval of the sliding door width direction becomes wide near the brake body when closing or opening the sliding door. Since the braking force to be gradually increased, the braking force can be further increased, and the operation of the sliding door that is braked when the sliding door is closed or opened completely becomes smoother.

Furthermore, it is preferable to provide a braking force adjusting means for adjusting the braking force by changing the interval between the parts separated in the sliding door width direction of the slide body.
According to such a configuration, since there is a part separated in the sliding door width direction of the slide body, the braking force is changed by changing the interval of the separated part in the sliding door width direction of the slide body by expanding the separated part. Therefore, it is possible to easily adjust the braking force by providing a braking force adjusting means for adjusting the braking force by changing the interval between the parts separated in the sliding door width direction of the slide body. Can do.

  As described above, according to the sliding door brake device according to the present invention, when the sliding door is closed or opened, braking is performed by increasing the frictional resistance, and the sliding door is closed or opened in the opposite direction. A pair of brake plates extending in the sliding door opening / closing direction and spaced apart in the sliding door width direction, the base, and the sliding door with respect to the base. It consists of a two-piece structure brake body that is slidable in the opening and closing direction and is formed of a slide body that slides on the inner surface of the brake plate when the sliding door is closed or opened on the outer surface in the sliding door width direction. With a simple configuration, the manufacturing cost can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which expands and shows the principal part about the example which attached the brake device for sliding doors which concerns on embodiment of this invention to an upper frame and a sliding door, (a) is the sliding door of the upper frame which the upper part of a sliding door engages The brake body attached to the opening-and-closing direction edge part, (b) has shown the brake board attached to the door-end side edge part upper surface of a sliding door. It is a perspective view which takes out and shows a brake body and a brake board. It is a disassembled perspective view of a brake body. It is a bottom view of a brake body, (a) has shown the state from which the slide body was spaced apart from the base | substrate, (b) has shown the state by which the slide body was stopped by the base | substrate. The brake body in a state where the slide body is held against the base is shown, (a) is a plan view, (b) is a front view, and (c) is a longitudinal sectional view showing a configuration example of the braking force adjusting means. It is an operation explanatory view of the brake device for sliding doors when closing the sliding door, (a) is a state in which the sliding plate is moved away from the base body, the sliding door is moved in the closing direction, and the brake plate is approaching the sliding body. (B) is a state where the brake plate is closer to the slide body, (c) is a state where the sliding portion of the slide body is in contact with the inner surface of the brake plate, and (d) is a slide moved together with the brake plate. The state where the body is held against the base is shown. It is operation | movement explanatory drawing of the brake device for sliding doors when opening from the state which closed the sliding door, (a) closed the sliding door and the state where the slide body was stopped by the base | substrate, (b) moved a sliding door to an opening direction. (C) is a state in which the sliding body with the sliding portion abutting against the inner surface of the brake plate is slid with the brake plate and separated from the base body, and (c) further moves the sliding door in the opening direction to (D) has shown the state which moved the sliding door to the opening direction further, and the state which separated from the inner surface of the brake plate.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments shown in the accompanying drawings, and includes all the embodiments that satisfy the requirements described in the claims. It is a waste.
In addition, in this specification, let the figure seen from the left toward the closing direction (refer arrow D1 in the figure) of a sliding door be a front view.

As shown in FIG. 1 (a), the sliding door S opens and closes an opening E, which is an entrance, for example, which is partitioned by a frame F. As shown in FIGS. The brake device 1 for sliding doors according to the embodiment extends in the sliding door opening / closing direction A, which is supported and fixed to the support member 9 attached to the upper end portion of the sliding door S on the door tip C side using the attachment holes 9A and 9B. The mounting holes 10A and 10B of the mounting plate 10 are provided at the ends of the sliding door opening / closing direction A of the upper frame U engaged with the pair of brake plates 2 and 2 spaced apart in the sliding door width direction (sliding door thickness direction) B and the upper portion of the sliding door S. As shown in FIG. 1A, the sliding door S is moved in the closing direction D1 and closed to the state where the door end C is brought into contact with the vertical frame L as shown in FIG. The inner surface 2A, 2A and the brake body 3 which has the sliding parts 6A and 6A which slide are provided.
In addition, the sliding door S may be a sliding door used for a closet, a cupboard, or the like as well as a sliding door that opens and closes the opening E that is an entrance.

As shown in FIG. 3, the brake body 3 includes a synthetic resin base 4 and a synthetic resin slide 5 that can slide in the sliding door opening / closing direction A with respect to the base 4.
Here, the slide body 5 is constituted by a pair of sliding bodies 6 and 6 separated in the sliding door width direction B, and the base body 4 side portion of the sliding door width direction B outer surface of the sliding bodies 6 and 6 is a brake plate 2 made of steel plate. A pair of sliding parts 6A, 6A sliding on the inner surfaces 2A, 2A of the two, and a pair of sliding bodies 6, 6 approaching the base 4 as they go outward in the sliding door width direction B toward their base 4 side end faces. The inclined surfaces 6B and 6B are formed.
Further, the base body 4 comes into contact with the inclined surfaces 6B and 6B of the sliding bodies 6 and 6 that move away from the sliding body 5 toward the sliding body 5 (sliding bodies 6 and 6) side end surface in the sliding door width direction B outward. A pair of inclined surfaces 4B, 4B (substantially parallel to the inclined surfaces 6B, 6B) are formed, and inserted between the inclined surfaces 4B, 4B between the pair of sliding bodies 6, 6 separated in the sliding door width direction B. A protrusion 4A to be (fitted) is formed.

The base 4 has guide surfaces 4C, 4C that are the outer surfaces of the sliding door width direction B and extend in the sliding door opening / closing direction A, and the upper surface (lower surface in FIG. 3) of the base 4 is connected to the mounting plate 10 and integrated.
The sliding bodies 6 and 6 are connected to and integrated with the base end side of the free end portions 11A and 11A of the connecting body 11 in a bottom view (planar view) substantially U-shaped, and the sliding body width direction of the connecting body 11 A state in which the guided surfaces 11B and 11B, which are B inner surfaces, are assembled so as to face the guide surfaces 4C and 4C of the base body 4, and the free end portions 11A and 11A of the coupling body 11 are fitted in the recesses 12A of the guide block 12 Then, the adjusting screw 8 is screwed into the screw hole 12B of the guide block 12, and the guided surfaces 12C and 12C, which are the outer surfaces in the sliding door width direction B of the guide block 12, extend in the sliding door opening / closing direction A erected on the mounting plate 10. It faces the inner surface of the sliding door width direction B of the portions 10C and 10C (see also FIG. 5A).
Therefore, the slide body 5 (slide bodies 6 and 6), the coupling body 11 and the guide block 12 are supported by the base body 4 and the mounting plate 10 so as to be slidable in the sliding door opening / closing direction A. (Sliding bodies 6 and 6) is a sliding door opening / closing direction between a position spaced from the base 4 as shown in FIG. 4A and a position where it is held against the base 4 as shown in FIG. 4B. Can slide to A.

As shown in FIGS. 3 and 5, the side surface of the head 8A of the adjusting screw 8 is a tapered surface (conical surface) whose diameter decreases toward the screw portion, and is the side farther from the base body 4 of the sliding bodies 6 and 6. The sliding door width direction B inner surface is also a tapered surface (conical surface) 6C circumscribing the tapered surface (conical surface) of the side surface of the head 8A of the adjusting screw 8.
Therefore, by rotating the adjusting screw 8 in the tightening direction, the distance between the sliding bodies 6 and 6 is widened and the length between the sliding portions 6A and 6A is increased. By rotating the adjusting screw 8 in the loosening direction, the sliding is achieved. The distance between the moving bodies 6 and 6 is reduced, and the length between the sliding portions 6A and 6A is reduced.
By providing the braking force adjusting means 7 for adjusting the braking force by changing the interval between the parts separated in the sliding door width direction B of the sliding body 5 (sliding bodies 6 and 6), the braking force can be easily adjusted. It can be carried out.
The elongated hole 10D of the mounting plate 10 is for avoiding interference with the tip of the adjusting screw 8 that moves in the axial direction and slides in the sliding door opening / closing direction A with respect to the mounting plate 10.

Next, the operation of the sliding door brake device 1 when the sliding door S is closed with reference to FIG. 6 and the operation of the sliding door brake device 1 when the sliding door S is opened from the closed state with reference to FIG. To do. 6 and 7, for explaining the operation of the sliding door brake device 1, the brake plates 2 and 2 on the side of the shoji (sliding door S) and the brake body 3 on the side of the frame F (upper frame U) Is taken out, and these bottom views (viewed from below) are shown.
In a state where the slide bodies 6 and 6 as the slide bodies 5 are separated from the base body 4 of the brake body 3, the sliding door S moves in the closing direction D1 as shown in FIG. 6A to FIG. When moving in the closing direction D1, the sliding portions 6A, 6A of the sliding bodies 6, 6 abut against the inner surfaces 2A, 2A of the brake plates 2, 2, and the sliding bodies 6, 6 are elastically deformed inward in the sliding door width direction B. Then, the sliding bodies 6 and 6 are in the state shown in FIG. 6C where they are sandwiched between the inner surfaces 2A and 2A of the brake plates 2 and 2.
From this state, the sliding door S moving further in the closing direction D1 is given a braking force from the sliding bodies 6 and 6 which are elastically deformed and follow, and together with the brake plates 2 and 2 as shown in FIG. 6 (d). When the inclined surfaces 6B and 6B of the moved sliding bodies 6 and 6 are in contact with the inclined surfaces 4B and 4B of the base body 4, the sliding bodies 6 and 6 separated in the sliding door width direction B are separated from the sliding door width direction B. Therefore, the frictional force between the brake plates 2 and 2 increases and the sliding door S is braked suddenly.

When the sliding door S is opened in the opening direction D2 from the state where the sliding door S shown in FIG. 7A is closed, the sliding bodies 6 and 6 sandwiched between the inner surfaces 2A and 2A of the brake plates 2 and 2 are in contact with the base body 4. A state shown in FIG. 7B is obtained by sliding in the opening direction D2 and being separated from the base body 5.
In this way, in a state where the sliding bodies 6 and 6 are separated from the base body 4, since the sliding bodies 6 and 6 are separated in the sliding door width direction B, they are easily elastically deformed in the sliding door width direction B. 2 and the braking force is reduced, the sliding door S can be moved easily, and the inner surface 2A of the brake plates 2 and 2 as shown in FIGS. , 2A moves away from the sliding portions 6A, 6A of the sliding bodies 6, 6, the braking force is lost, and the sliding door S can be moved more easily.

Further, the angle H formed by the inclined surfaces 6B and 6B of the pair of sliding bodies 6 and 6 shown in FIG. 4 and the angle H formed by the inclined surfaces 4B and 4B of the base body 4 are about 90 °. The angle G formed by the horizontal direction along the surface 6B and the sliding door opening / closing direction A and the angle G formed by the horizontal direction along the inclined surface 4B of the base 4 and the sliding door opening / closing direction A are about 45 °.
By such an angle setting of the inclined surfaces 6B, 6B and 4B, 4B, a phenomenon that is likely to occur when the angle G is large, a phenomenon that the braked sliding door S rebounds in the opening direction D2, and a case that the angle G is small is likely to occur. Occurrence of the phenomenon that the sliding door S gradually moves in the opening direction D2 after the sliding door S is completely closed can be suppressed.

Furthermore, since the protrusion 4A inserted (fitted) between the sliding bodies 6 and 6 is formed between the inclined surfaces 4B and 4B of the base body 4 as described above, the protrusion 4A is the sliding body. 6 and 6, since the movement of the sliding bodies 6 and 6 to the inside of the sliding door width direction B is suppressed, the sliding portion formed on the outer surface of the sliding doors 6 and 6 in the sliding door width direction B It is possible to ensure the magnitude of braking force (brake effectiveness) due to sliding between 6A, 6A and the inner surfaces 2A, 2A of the brake plates 2, 2.
In addition, the inclined surfaces 6B and 6B of the sliding bodies 6 and 6 are stopped by the inclined surfaces 4B and 4B of the base body 4, and after the collision, the inclined surfaces 6B and 6B of the sliding bodies 6 and 6 are inclined surfaces 4B and 6B of the base body 4, respectively. Even if a force that moves in a direction away from 4B is applied, the braking force that suppresses the movement of the sliding bodies 6 and 6 (sliding body 5) at that time increases, so that the sliding door S that moves together with the sliding bodies 6 and 6 The separation from the vertical frame L can be suppressed.

Furthermore, as shown in FIG. 6 and FIG. 7, when the sliding door width direction B closes the sliding door S, the one closer to the brake body 3 becomes wider on the inner surfaces of the pair of brake plates 2 and 2. A tapered surface is formed.
Accordingly, since the braking force acting on the sliding door S gradually increases due to such a tapered surface, the braking force can be further increased, and the operation of the sliding door S that is braked when the sliding door S is fully closed is further increased. Become smooth.

  The sliding door brake device 1 can be slid in the sliding door opening / closing direction A with respect to the pair of brake plates 2, 2 extending in the sliding door opening / closing direction A and separated in the sliding door width direction B, the base 4, and the base 4. The sliding body 5 includes a sliding body 5 (sliding bodies 6 and 6) formed with sliding portions 6A and 6A that slide with the inner surfaces 2A and 2A of the brake plates 2 and 2 when the sliding door S is completely closed on the outer surface of the sliding door width direction B. Since it is constituted by the brake body 3 having a two-piece structure, the production cost can be reduced because the configuration is simple.

In the above description, the brake plates 2 and 2 are attached to the upper surface of the sliding door S on the door tip C side, and the brake body 3 is connected to the upper end of the sliding door S in the sliding door opening / closing direction A end (the sliding door S door). Although the example attached to the edge part corresponding to the tip C side) is shown, the brake plates 2 and 2 are attached to the upper surface on the door bottom side of the sliding door S, and the sliding door of the upper frame U in which the upper part of the sliding door S is engaged with the brake body 3 You may attach to the opening-and-closing direction A edge part (edge part corresponding to the door butt side of the sliding door S). As described above, when the sliding door brake device 1 is mounted on the door bottom side of the sliding door S, the sliding door S is braked by increasing the frictional resistance when the sliding door S is fully opened.
Alternatively, the brake plates 2 and 2 are attached to the sliding door opening / closing direction A end of the upper frame U with which the upper portion of the sliding door S is engaged, and the brake body 3 is attached to the upper end portion of the sliding door S on the door tip C side or the door bottom side. May be.
Moreover, although the example which comprises the slide body 3 by a pair of sliding bodies 6 and 6 separated in the sliding door width direction B was shown, the slide body 3 is a portion separated in the sliding door width direction B (elastically deformed in the sliding door width direction B). It is sufficient if it has at least the base 4 side.

A Sliding door opening / closing direction B Sliding door width direction C Door end D1 Closing direction D2 Opening direction E Entrance / exit (opening)
F Frame G G Angle formed by the horizontal direction along the inclined surface of the sliding body and sliding door opening / closing direction Angle L formed by the inclined surfaces of the pair of sliding bodies Vertical frame S Sliding door U Upper frame 1 Sliding door brake device 2 Brake plate 2A Inner surface 3 Brake body 4 Base 4A Projection 4B Inclined surface 4C Guide surface 5 Slide body 6 Sliding body 6A Sliding portion 6B Inclined surface 6C Tapered surface (conical surface)
7 Braking force adjusting means 8 Adjustment screw 8A Head 9 Support member 9A, 9B Mounting hole 10 Mounting plate 10A, 10B Mounting hole 10C Guide portion 10D Long hole 11 Linked body 11A Free end portion 11B Guided surface 12 Guide block 12A Recessed portion 12B Screw hole 12C Guided surface

Claims (5)

A pair of brake plates attached to the sliding door opening / closing direction end of the upper frame with which the upper end of the sliding door door side or the door bottom side or the upper part of the sliding door engages and extending in the sliding door opening / closing direction and spaced apart in the sliding door width direction; ,
It is attached to the sliding door opening / closing direction end of the upper frame with which the upper part of the sliding door is engaged or the upper end of the sliding door at the front end side or the door bottom side, and when the sliding door is closed or opened, the brake plate A brake body having an inner surface and a sliding portion that slides,
The brake body is constituted by a base body and a slide body having at least a portion separated in the sliding door width direction on the base side, and slidable in the sliding door opening / closing direction with respect to the base body, and the sliding door width direction outer surface of the slide body And a pair of inclined surfaces approaching the base as it goes outward in the sliding door width direction on the base-side end surface of the slide body, and the slide is formed on the slide-side end face of the base body Forming a pair of inclined surfaces that contact the inclined surface of the body,
When the sliding body slides in the sliding door opening / closing direction with respect to the base and is separated, the sliding body is sandwiched between inner surfaces of the brake plates when the sliding door is closed or opened. The slide body moves together with the brake plate, and the inclined surface of the slide body is stopped by the inclined surface of the base body,
When the sliding door is moved in a direction opposite to the closing or opening direction from this state, the sliding body sandwiched between the inner surfaces of the brake plates slides in the sliding door opening / closing direction relative to the base. Thus, the brake device for sliding doors is in a state of being separated from the base body.   The sliding door brake device according to claim 1, wherein an angle formed by a horizontal direction along the inclined surface of the slide body and a sliding door opening / closing direction is about 45 °.   The sliding door brake device according to claim 1 or 2, wherein a protrusion is formed between a pair of inclined surfaces of the base body and is inserted between portions of the slide body separated in the sliding door width direction.   The taper surface which the side close | similar to the said brake body becomes wide when the space | interval of those sliding door width directions closes or opens all the sliding doors is formed in the inner surface of said pair of brake board. The brake device for sliding doors of any one of Claims. The sliding door brake device according to any one of claims 1 to 4, further comprising a braking force adjusting unit that adjusts a braking force by changing an interval between portions separated in the sliding door width direction of the slide body.

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