JP6193338B2 - Sliding door optional opening position stop device - Google Patents

Description

The present invention relates to a sliding door any door open position stop device for holding the sliding door in any open door position.

  There is known a sliding door device that automatically closes when the sliding door is opened. Moreover, in such a sliding door device, in order to hold the sliding door at an arbitrary opening position, the sliding door is arbitrarily opened by braking the sliding door to move in the closing direction and holding the sliding door at the arbitrary opening position. A sliding door device provided with a position stopping device is also known (see, for example, Patent Documents 1 and 2).

  On the other hand, there is also known a sliding door device that releases the braking function of the sliding door arbitrary opening position stop device and automatically closes the sliding door when a fire occurs (for example, Patent Document 3 and 4).

Japanese Patent No. 2741670 JP 2010-248830 A Japanese Patent No. 2937828 Patent No. 4800852

The sliding door arbitrary opening position stopping device for sliding doors disclosed in Patent Documents 1 and 2 stops the sliding door by applying a certain braking force to the sliding door to be automatically closed. It can be closed by applying a closing force that exceeds the power. The sliding door arbitrary opening position stop device disclosed in Patent Document 1 requires a large force for the opening operation because the same braking force is applied to the sliding door when the sliding door is opened and closed. On the other hand, Patent Document 2 is improved to reduce the door opening force required for the opening operation and to apply a large braking force when the opened sliding door moves in the closing direction. It has been broken.

  The sliding door arbitrary opening position stopping device disclosed in Patent Document 3 is a rail in which an elastic stopper piece (72) pivotably attached to a sliding door (8: reference number in Patent Document 3) is horizontally fixed to the door frame. (11) is engaged to give a braking force. When releasing the braking force, the support bracket (71) that supports the elastic stopper piece is rotated to move the elastic stopper piece (72) to the rail. Although it is separated from (11), in the same manner as the sliding door arbitrary opening position stopping device disclosed in Patent Document 1, in the normal opening and closing doors, the same braking force is applied to the sliding door. It has become. In addition, it engages with the support fitting (71) in a normal state, holds the support fitting in a stationary position with respect to the sliding door, and releases the engagement with the support fitting in the event of a fire. The retracting means (78) that allows the pivot to rotate is provided. The retracting means (78) includes a plunger (77) having a stopper (76) that engages with the support fitting at the tip, and the plunger It is composed of a solenoid device (solenoid 75) that pulls in the case of a fire and removes the stopper from the support bracket, and the biasing force of the spring (74) that attempts to rotate the support bracket crosses the plunger (77) across the plunger. Therefore, the force required to retract the plunger needs to be quite large, and the solenoid device must be quite large.

  The sliding door arbitrary opening position stop device of Patent Document 4 has a braking member (holding member 37) attached to the door frame, and the braking member is engaged with a rail (holding rail 20) fixed to the sliding door in the horizontal direction. However, when the door is opened, no substantial resistance force is applied to the door, and the required braking force is applied when the door is closed. In the event of a fire, the brake member (37) is linked in response to an alarm signal. The latch member (lever member 43) that holds the rotating arm (36) is removed, and the braking member (37) is rotated by the spring force to apply a force in the closing direction to the rail (20). The sliding door is moved in the closing direction. In this sliding door arbitrary opening position stop device, the mechanism for closing the sliding door in the event of a fire is as described above, and the structure becomes complicated.

  In view of the above, an object of the present invention is to provide a sliding door arbitrary opening position stop device with a simple structure that can release a braking force on an opened sliding door and enable automatic opening. Further, in such a sliding door arbitrary opening position stop device, when opening the door, it is possible to open the door with a relatively small force, and when closing the door, the sliding door is reliably braked and held at the opening position. An object of the present invention is to provide a sliding door arbitrary opening position stopping device provided with a braking device having a structure.

That is, the present invention
A sliding door arbitrary opening position stop device for stopping the sliding door to which the door closing force is applied in accordance with the movement in the opening direction at the arbitrary opening position (denoted by reference numeral 10 in the description of the embodiment described below). In the following description, the same reference number is applied), and a closing brake device (14) is provided for applying a braking force against the closing force to the sliding door in order to stop the sliding door at an arbitrary opening position. But,
A support frame (20) attached to the sliding door (3) and displaced together with the sliding door (3) in the opening and closing directions (A, B);
An elastic roller (22-2) supported by the support frame (20) and displaceable relative to the support frame (20) in the door opening / closing direction, the door frame (2) It includes an elastic roller (22-2) that can be displaced in the opening / closing direction with respect to the support frame (20) while rolling on the rail (4) that is fixed and extends in the opening / closing direction. A braking roller (22);
A braking member (24) attached to the support frame (20), relative to the support frame (20) while rotating on the rail (4) between the brake member (24) and the rail (4) Has a braking surface (24-1) that defines a roller passage (26) through which the braking roller (22) displaced in the opening / closing direction passes, and the braking surface (24-1) is the roller passage (26). The door side position (FIG. 3, FIG. 3) which has a constriction part (24-2) which narrows the space | interval between this rail and this rail, and prevents that this braking surface displaces in the direction away from this rail (4). 5) and a position on the door closing side (FIG. 4) that allows the braking surface (24-1) to move away from the rail (4) by being displaced closer to the door closing side than the door opening side position. A braking member (24),
The brake member (24) is attached to the support frame (20) and is displaced from the door-opening side position to the door-closing side position, and the brake member (24) is attached to the door-opening side position. A spring member (29)
Have
The braking roller (22) is configured so that the narrowed portion (24-) of the braking surface (24-1) of the braking member (24) at the opening side position when the sliding door is in the closed position (FIG. 5). 2), when the sliding door (3) is in the door opening position (FIG. 3), the braking surface (24-1) of the braking member (24) is in the door opening position. When the sliding door (3) is displaced from the closing position (FIG. 5) to the opening position (FIG. 3), it is displaced in the opening direction together with the sliding door (3). The braking surface (24-1) of the braking member (24) is engaged so that the braking roller (22) is sandwiched between the rail and the narrower portion (24-2) on the door opening side. As a result, the narrowed portion (24-2) is displaced to the door closing position and away from the rail, so that the constricted portion (24-2) is When the roller (22-2) passes in the opening direction and the sliding door (3) is displaced from the opening position (FIG. 3) to the closing position (FIG. 5), the sliding door (3) is displaced in the opening direction together with the sliding door (3). The braking surface (24-1) of the braking member (24) is engaged so that the braking roller (22) is sandwiched between the rail and the narrower portion (24-2) on the door closing side, There is provided a sliding door arbitrary opening position stop device adapted to receive a braking force larger than the closing force from the braking roller.

In this sliding door arbitrary opening position stop device, the braking member is moved together with the sliding door in the opening and closing directions to engage the braking roller, and when the sliding door is opened, it is separated from the rail by engagement with the braking roller. When the sliding door is closed, the braking force applied to the braking member (and thus the sliding door) is moved in the opening direction rather than in the closing direction. The sliding door is stopped at an arbitrary opening position by making it easier to open the door and making the braking force generated when closing the door larger than the closing force applied to the opened sliding door. I can do it.

Specifically, the braking surface (24-1) has a door-side inclined portion (24) that gradually increases the distance from the rail (4) as it extends from the narrowed portion (24-2) to the door-closing direction (B). -4) and the narrowed portion (24-2) can be provided with a door-opening inclined portion (24-3) that gradually increases in the same interval as it extends toward the door-opening direction (A).

The elastic roller of the braking roller has a rotating shaft (22-1) extending horizontally perpendicular to the door opening / closing direction, and the support frame (20) is inverted U-shaped when viewed in a cross section orthogonal to the door opening / closing direction. And each of the side walls (20-1) has a pair of opposing side walls (20-1), and each side wall (20-1) receives the end of the rotary shaft (22-1) so as to be displaceable in the opening and closing directions. (20-2) can be included.

In this case, the braking member (24) is provided between the opposing side walls (20-1) of the support frame (20), and the pair of inverted L-shaped openings (24-5) are opened and closed. Each opening (24-5) extends in the door opening / closing direction and has a door closing side portion (24-5B) and a door opening side portion (24-5A). The door side portion (24-5A) is provided with an extended portion (24-5C) extending downward,
The support frame (20) is provided with a pair of pins (30) extending horizontally between the opposing side walls (20-1) and penetrating the inverted L-shaped openings (24-5), respectively.
  The pins are respectively located in the closing side portion (24-5B) of the opening (24-5) when the braking member (24) is in the opening side position (FIGS. 3 and 5). When it is adjacent to the end (24-6) and in the above-mentioned position on the closing side (FIG. 4), it is in the opening-side portion (24-5A) of the opening and on the opening-side end (24-7) of the opening Adjacent to each other.

In the above sliding door arbitrary opening position stop device, the door closing braking device (14) is configured such that the narrowed portion (24-2) of the braking member (24) is separated from the rail (4) and the sliding door (3 ) Is displaceable to an inoperable position where it cannot be prevented from being displaced in the closing direction by the closing force applied to the sliding door,
The sliding door arbitrary opening position stop device is further attached to the sliding door (3) adjacent to the door closing braking device (14), and the door closing braking device (14) is displaced to the inoperable position, thereby the door closing braking device. A brake releasing device (16) for releasing the braking action of (14) can be provided.

  Hereinafter, the sliding door arbitrary position stop apparatus concerning this invention is demonstrated based on an accompanying drawing.

It is a front view of the sliding door arbitrary position stop apparatus which concerns on this invention fixed to the door-car attachment member in the upper edge of a sliding door. It is the side view which looked at the sliding door arbitrary position stop apparatus of FIG. 1 from the door opening direction side. It is the figure which showed the state when the sliding door exists in the door opening position of the door closing braking device and the brake release device which are the main elements of the sliding door arbitrary opening position stop device of FIG. A fixed frame for attaching the braking device and the braking release device to the door pulley mounting member is indicated by an imaginary line. The door closing brake device and the brake releasing device are shown when the sliding door starts to move from the door closing position toward the door opening direction, and shows the state in which the braking member of the door closing brake device is lifted upward by the braking roller. Yes. The door closing braking device and the brake releasing device when the sliding door is in the door closing position are shown, and the braking member of the door closing braking device is in the same position as in FIG. It is a figure similar to FIG. 3 which shows the state which the brake release apparatus started to operate | move. It is a figure which shows the state by which the closing brake device was made into the inoperable position by the brake cancellation | release apparatus.

  1 and 2, 2 is a door frame, 3 is a sliding door, 4 is a rail fixed to the door frame, 5 is a door wheel that rolls on the rail, and 6 is a door wheel installation for attaching the door wheel to the upper edge of the sliding door 3. The member is shown.

  The sliding door arbitrary opening position stop device 10 according to the present invention includes a fixed frame 12 having a reverse U-shaped cross section fixed to the door pulley mounting member 6 with screws 7, and both side walls 12-1 of the fixed frame 12. It has the door closing brake device 14 and the brake releasing device 16 set between them. The fixed frame 12 conceptually forms a part of the sliding door integrally with the door pulley mounting member 6, and attaches the door wheel 5, the door closing brake device 14 and the brake releasing device 16 to the sliding door 3. The trolley mounting member 6 and the fixed frame 12 are shown as an imaginary line as an integral part, and the relationship between the door trolley mounting member 6 and the fixed frame 12 which are main elements of the sliding door arbitrary opening position stopping device 10 is clarified. Yes.

  The door closing braking devices 14 are respectively attached to both side walls 12-1 of the fixed frame 12 and extend horizontally in a stationary position with respect to the fixed frame 12 (and thus with respect to the sliding door 3) (FIG. 3). An inverted U-shaped support frame 20 pivotally attached to a screw 18-1 that defines a brake, a brake roller 22 supported by the support frame 20 and mounted on the rail 4, and a distance upward from the rail 4. And a braking member 24 supported by the support frame 20.

  As shown in FIG. 2, the brake roller 22 is rotated around a pivot line 22-4 (corresponding to the fourth pivot line in the claims) parallel to the first pivot axis. A shaft 22-1, a deformable elastic roller 22-2 mounted on the rail 4 and mounted around the rotating shaft 22-1, and the elastic roller 22-2 fixed to the rotating shaft 22-1 And mounting roller 22-3 to be attached. Both ends of the rotating shaft 22-1 are passed through rotating shaft storage grooves 20-2 (FIG. 3) provided on the pair of side walls 20-1 of the support frame 20. The rotating shaft storage groove 20-2 is provided so as to extend in parallel with the rail 4, and the braking roller 22 is relatively displaceable with respect to the support frame 20 in the opening / closing direction of the sliding door. The elastic roller 22-2 is preferably made of a flexible rubber material or synthetic resin.

The braking member 24 is a braking surface 24 that defines a roller passage 26 through which the braking roller 22 that is displaced in the door opening / closing direction relative to the support frame 20 while rotating on the rail 4 is passed between the braking member 24 and the rail 4. -1. The braking surface 24-1 is adapted to engage with the braking roller 22, and a narrowed portion 24-2 that narrows the space between the roller passage 26 and the rail 4 and the door from the narrowed portion 24-2. The opening- side inclined portion 24-3 that gradually increases the distance from the rail 4 as it extends in the direction side A, and the closing- side inclined portion 24 that gradually increases the distance as it extends from the narrowed portion 24-2 to the closing direction B. -4. As shown in FIG. 3, the braking member 24 has a pair of inverted L-shaped openings 24-5 provided at intervals in the door opening and closing directions. As will be described later, a pin 30 whose vertical position is adjustable is passed between the side walls 20-1 of the support frame 20. Each opening 24-5 has a door closing side portion 24-5B and a door opening side portion 24-5A, and the door opening side portion 24-5A is provided with an extension portion 24-5C extending toward the rail 4 for braking. The member 24 includes a door opening side position (FIG. 3) where the door closing side end 24-6 of the opening 24-5 substantially contacts the pin 30, and a door opening side end 24-7 of the opening 24-5 to the pin 30. It can be relatively displaced with respect to the support frame 20 between the substantially closed door side position (FIG. 4), and when in the closed side position, the extension portion 24-5C houses the pin 30 and the brake member. 24 can be displaced in a direction away from the rail 4. The support frame 20 includes a leaf spring 29, and the leaf spring 29 biases the braking member 24 toward the door opening side position shown in FIG.

Braking roller 22, when the sliding door 3 is in the closing position, as shown in FIG. 5, in a position to be engaged with the door-opening side inclined surface 24-3 of the braking member 24 in the door-opening-side position. In this state, when the sliding door 3 is moved in the door opening direction A, the braking roller 22 engaged with the door opening side inclined surface 24-3 moves toward the constricted portion 24-2 while rolling on the rail 4, The braking member 24 is displaced in the door closing direction against the urging force of the leaf spring 29 to the door opening side position shown in FIG. 4, and the braking roller 22 further rolls on the rail 4 and moves in the door opening direction A. Then, the brake member 24 is displaced in a direction away from the rail 4 by moving toward the narrowed portion 24-2 (that is, an extended portion of the opening side portion 24-5A of the opening 24-5 of the brake member 24 at the door closing side position). 24-5C engages with the pin 30), and passes through the roller passage 26 between the narrowed portion 24-2 and the rail 4 enlarged thereby, on the door side inclined surface 24-4 of the braking member 24. Engaging position, whereby the brake member 24 is 29 by to be displaced in the door-opening-side position (Fig. 3).

When the sliding door 3 opened in this manner is moved in the closing direction B , the sliding door 3 moves toward the constricted portion 24-2 while rolling on the rail 4, but in this case, the pin 30 has an opening 24-5. Is engaged with the door closing side portion 24-5B, the displacement of the braking member 24 in the direction away from the rail 4 is limited, and the roller between the narrowed portion 24-2 of the braking member 24 and the rail 4 is limited. The interval between the passages 26 does not increase, and the braking roller 22 is stopped from rotating due to a large frictional force between the braking member 24 and the rail 4, thereby stopping the movement of the sliding door in the closing direction. Is held in the position opened by the door. When a force in the closing direction is applied by hand to the stopped sliding door in this way, the braking roller 22 is greatly deformed and passes between the narrowed portion 24-2 of the braking member 24 and the rail 4, and the opening side is inclined. It engages with the surface 24-3, and the braking member 24 is in the position shown in FIG.

  The following adjustment member 34 is used to adjust the position of the pin 30 in the vertical direction. That is, as shown in FIG. 2, the adjustment member 34 has an inverted U-shape as a whole having a pair of side walls 34-1 and a top wall 34-2 connecting both side walls, as shown in FIG. As described above, a screw portion 36-1 of an adjustment shaft 36 that is rotatable about an axis extending in the vertical direction is passed through and screwed to the top wall 20-3 of the support frame 20 to the top wall 34-2. The knob 36-2 attached to the upper end of the adjustment shaft 36 is rotated to move up and down along the screw portion 36-1. Both ends of the pin 30 are slidably accommodated in a vertically extending slot 20-4 provided on both side walls 20-1 of the support frame 20, and are guided by the slot 20-4 in the vertical direction. It has become.

As described above, the sliding door arbitrary opening position stop device 10 according to the present invention is a braking release device for releasing the braking action of the door closing braking device 14 for braking the sliding door to be closed as described above. 16 is provided. The brake release device 16 can be pivoted around a second pivot 40 that is parallel to the first pivot 18 of the support frame 20 of the door closing brake 14 and is stationary with respect to the sliding door 3. The brake release member 42 is provided. The brake release member 42 has a locking projection 44 and a holding projection 46 extending in the radial direction from the second pivot 40, and the locking projection 44 is between the first pivot 18 and the second pivot 40. As shown in FIGS. 6 and 7, the door closing device 14 is engaged with the locking recess 20-5 formed in the support frame 20 of the door closing braking device 14 to hold the door closing braking device 14 in the operating position for performing the door closing braking operation described above. Further, when the brake release member 42 pivots clockwise around the second pivot 40, the door closing brake device 14 pivots counterclockwise around the first pivot 18 and the braking action described above. Pivot to the inoperable position where you can't. That is, when the support frame 20 of the door closing brake device 14 is rotated in the counterclockwise direction, the brake member 24 is pivoted around the first pivot 18 together with the support frame 20 and displaced in a direction away from the rail 4. As a result, the width of the roller passage 26 between the braking surface 24-1 of the braking member 24 and the rail 4 is expanded, and the braking action on the braking roller 22 by the braking surface 24-1 and the rail 4 is as described above. The sliding door 3 is automatically closed by the force in the closing direction B applied thereto. The holding protrusion 46 engages with the door closing brake device 14 when the door closing brake device 14 is pivoted by the locking protrusion 44 and holds it in the inoperable position as described above (FIG. 7). Preferably, the locking recess 20-5 of the support frame 20 of the door closing braking device 14 has the shape of one tooth groove of the first virtual gear centered on the first pivot 18 and the brake releasing member 42 The locking projection 44 is configured to have the shape of one tooth of the second virtual gear centered on the second pivot 40 that meshes with the first virtual gear.

  The brake release device 16 is engaged with the brake release member 42 and the locking projection 44 is engaged with the support frame 20 of the door closing brake device 14 to maintain the door closing brake device 14 in the operating position. It further includes a brake release activation device 50 that releases the engagement and moves the door closing brake device 14 to the inoperable position. In the illustrated embodiment, the brake release activation device 50 is engaged with the brake release member 42 and the locking projection 44 is engaged with the support frame 20 of the door brake device 14 to maintain the door brake device 14 in the operating position. The engaging member 52 that receives the signal from the outside such as a fire alarm signal is displaced to disengage the engaging member 52 from the brake releasing member 42. And a solenoid device 56 that is rotated around the second axis 40 by a spring 54 wound around.

  In the illustrated embodiment, the locking member 52 is a lever that is pivotable around a third pivot 58 that is parallel to the first pivot 18 and that is stationary relative to the sliding door 3. A pin 60 parallel to the third pivot 58 is provided at one end of the shaft, and a hollow pipe 62 that is rotatable around the pin 60 is locked to the locking recess 64 of the brake release member 42, and the other end is Connected to the solenoid device 56, when the solenoid device 56 receives a signal from the outside, the solenoid device 56 drives the third pivot 58 around the third pivot 58, and the hollow pipe 62 provided at the one end of the lever releases the brake. The member 42 is removed from the locking recess 64. The rotatable hollow pipe 62 is provided so that the friction with the locking recess 64 is reduced to facilitate removal from the locking recess 64, and the solenoid device 56 moves the locking member (lever) 52 with a small force. To be able to do that.

  A switch operating projection 68 that pivots together with the brake releasing member 42 is provided around the second pivot 40, and the solenoid device is operated so that the locking projection 44 of the brake releasing member 42 supports the closed brake device. When the support frame 20 is disengaged from the frame 20 and rotated in the counterclockwise direction and the holding projection 46 is engaged with the holding frame 20, the switch operating projection 68 is moved to the limit switch 70 fixed to the fixed frame 12. Engage and stop operation of the solenoid device 56. When the operation of the solenoid device 56 is stopped, the locking member 52 is returned in the counterclockwise direction by the torsion spring 72 wound around the axis 58, but the brake release member 42 is held at the position rotated by the spring 54. .

  As mentioned above, although embodiment of the sliding door arbitrary opening position stop apparatus concerning this invention was described, this invention is not limited to this embodiment. For example, although the illustrated braking roller 22 is shown as engaging with the rail 4, it can also be engaged with a door as disclosed in the above-mentioned Patent Document 2. Further, the brake releasing member 42 can be manually rotated. Various other changes are possible.

Door frame 2; Sliding door 3; Rail 4, Door wheel 5: Door wheel mounting member 6; Screw 7; Sliding door arbitrary opening position stop device 10; Fixed frame 12; Side wall 12-1; Closed brake device 14; 1 pivot axis 18; support frame 20; side wall 20-1; rotating shaft storage groove 20-2; top wall 20-3; slot 20-4; locking recess 20-5; Elastic roller 22-2; mounting roller 22-3; (fourth) pivot axis 22-4; braking member 24; braking surface 24-1; constricted portion 24-2; portion 24-4; opening 24-5; open the door portion 24-5A; closed door portion 24-5B; extension 24-5C; door-opening-side end portion 24-6; closed-door side end portion 24-7; roller Passage 26; pin 30; leaf spring 29; adjusting member 34; side wall 34-1; 34-2; adjustment shaft 36; screw 36-1; knob 36-2; second pivot 40; braking release member 42; locking projection 44; holding projection 46; braking release activation device 50; Spring 54; Solenoid device 56; Third pivot 58; Pin 60; Hollow pipe 62; Locking recess 64; Switch operating protrusion 68; Limit switch 70; Door closing direction side A; Door opening direction B

Claims (5)

In a sliding door arbitrary opening position stop device for stopping a sliding door to which a closing force is applied in accordance with being moved in the opening direction, in order to stop the sliding door at an arbitrary opening position, A closing brake device (14) for applying a braking force against the closing force to the sliding door, the closing brake device comprising:
A support frame (20) attached to the sliding door (3) and displaced together with the sliding door (3) in the opening and closing directions (A, B);
An elastic roller (22-2) supported by the support frame (20) and displaceable relative to the support frame (20) in the door opening / closing direction, the door frame (2) It includes an elastic roller (22-2) that can be displaced in the opening / closing direction with respect to the support frame (20) while rolling on the rail (4) that is fixed and extends in the opening / closing direction. A braking roller (22);
A braking member (24) attached to the support frame (20), relative to the support frame (20) while rotating on the rail (4) between the brake member (24) and the rail (4) Has a braking surface (24-1) that defines a roller passage (26) through which the braking roller (22) displaced in the opening / closing direction passes, and the braking surface (24-1) is the roller passage (26). The door side position (FIG. 3, FIG. 3) which has a constriction part (24-2) which narrows the space | interval between this rail and this rail, and prevents that this braking surface displaces in the direction away from this rail (4). 5) and a position on the door closing side (FIG. 4) that allows the braking surface (24-1) to move away from the rail (4) by being displaced closer to the door closing side than the door opening side position. A braking member (24),
The brake member (24) is attached to the support frame (20) and is displaced from the door-opening side position to the door-closing side position, and the brake member (24) is attached to the door-opening side position. And a spring member (29)
The braking roller (22) is configured so that the narrowed portion (24-) of the braking surface (24-1) of the braking member (24) at the opening side position when the sliding door is in the closed position (FIG. 5). 2), when the sliding door (3) is in the door opening position (FIG. 3), the braking surface (24-1) of the braking member (24) is in the door opening position. When the sliding door (3) is displaced from the closing position (FIG. 5) to the opening position (FIG. 3), it is displaced in the opening direction together with the sliding door (3). The braking surface (24-1) of the braking member (24) is engaged so that the braking roller (22) is sandwiched between the rail and the narrower portion (24-2) on the door opening side. As a result, the narrowed portion (24-2) is displaced to the door closing position and away from the rail, so that the constricted portion (24-2) is When the roller (22-2) passes in the opening direction and the sliding door (3) is displaced from the opening position (FIG. 3) to the closing position (FIG. 5), the sliding door (3) is displaced in the opening direction together with the sliding door (3). The braking surface (24-1) of the braking member (24) is engaged so that the braking roller (22) is sandwiched between the rail and the narrower portion (24-2) on the door closing side, A sliding door arbitrary opening position stop device adapted to receive a braking force larger than the closing force from the braking roller. As the braking surface (24-1) extends from the constricted portion (24-2) toward the door closing direction (B), the door-side inclined portion (24-4) gradually increases in distance from the rail (4). And an opening-side inclined portion (24-3) that gradually increases in the same interval as it extends from the narrowed portion (24-2) toward the door-opening direction (A). Stop device. The elastic roller of the braking roller includes a rotating shaft (22-1) extending horizontally perpendicular to the door opening / closing direction,
The support frame (20) has an inverted U shape when viewed in a cross section orthogonal to the opening / closing direction, and has a pair of opposing side walls (20-1), and each side wall (20-1) is rotated. shaft (22-1) ends Ru displaceably accepted by the open door-closing direction rotating shaft receiving groove (20-2) sliding any open according to claim 1 or 2 is to have the Door position stop device. The braking member (24) is provided between the opposing side walls (20-1) of the support frame (20), and a pair of inverted L-shaped openings (24-5) are opened and closed. Each opening (24-5) extends in the door opening / closing direction and has a door closing side portion (24-5B) and a door opening side portion (24-5A). The door side portion (24-5A) is provided with an extended portion (24-5C) extending downward,
The support frame (20) is provided with a pair of pins (30) extending horizontally between the opposing side walls (20-1) and penetrating the inverted L-shaped openings (24-5). ,
The pins are respectively in the closed side portion (24-5B) of the opening (24-5) when the braking member (24) is in the open side position (FIGS. 3 and 5). Is located in the opening side portion (24-5A) of the opening when it is adjacent to the closing side end portion (24-6) and located at the closing side position (FIG. 4). The sliding door arbitrary opening position stop device according to any one of claims 1 to 3, wherein the sliding door is arbitrarily adjacent to 24-7). The door closing braking device is displaceable to an inoperable position where the narrowed portion of the braking member is separated from the rail and the opened sliding door cannot be prevented from being displaced in the closing direction by the closing force. And
The sliding door arbitrary opening position stop device is further attached to the sliding door adjacent to the door closing braking device, and displaces the door closing braking device to the inoperable position to release the braking action of the door closing braking device. The sliding door arbitrary opening position stop apparatus as described in any one of Claims 1 thru | or 4 provided with a brake release apparatus.

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