JPH09119259A - Self-closing type sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To release a free stopping function, and to close a sliding door automatically at the time of emergency in the self-closing type sliding door having the free stopping function. SOLUTION: A roller 21 is engaged with a rail in a rollable manner, and a sliding door 8 is hung down. A free stopping device stopping the sliding door at an arbitrary place is disposed onto a bracket installed at the upper end of the sliding door. A support metal fitting 71 for the free stopping device 7 is arranged in a vertical surface along the sliding door in a rockable manner while using one point of the support metal fitting 71 as a center, and an elastic stopper piece 72 stopping the sliding door by friction with a rail 11 is suspended and supported rotatably from the support metal fitting 71 between the center of revolution of the support metal fitting 71 and a free end. The free end of the support metal fitting 71 is energized upwards by a spring 79, and a stopper 76 is disposed in an upward rotating transfer path at the free end of the support metal fitting 71 in a manner that the stopper 76 can be projected and retreated. A retreating means 78 being operated by a signal from a smoke sensor 91 and retreating the stopper 76 from the upward transfer path of the support metal fitting 71 is linked with the stopper 76.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door device which is suspended and supported by a suspension rail and is automatically closed by the inclination of the rail, the weight of a weight connected to the sliding door, and the like.

[0002]

2. Description of the Related Art A sliding door is hung by a roller on a rail inclined in a lower direction in a closing direction, and the slant of the rail and the weight of the sliding door or the weight is connected to the sliding door and the weight of the weight is connected to the sliding door. Mechanisms for automatically closing sliding doors are well known. In the self-closing sliding door device, a free stop device is connected to the sliding door to stop the sliding door at an arbitrary position.

The sliding door having the free stop device has an advantage that the sliding door can be held in an arbitrary open position, but an external force is required for closing the sliding door, and this must rely exclusively on the force of a person. Therefore, there is a problem that the sliding door cannot be closed in an emergency such as a fire and the damage is increased. The present invention provides a sliding door device that can automatically close a sliding door without losing the intermediate stopping function of the free stop device and in an emergency, the stopping function is released by a signal from an emergency alarm device. .

[0004]

A sliding door device according to the present invention comprises a rail (1
A free stop device (7) for suspending the sliding door (8) by rotatably engaging the roller (21) with the sliding door (8) and stopping the sliding door at an arbitrary position on the bracket (2) attached to the upper end of the sliding door. Free-stop device (7)
Deploys the support metal fitting (71) so that it can swing about a single point in a vertical plane along the sliding door, and the support metal fitting (71) is placed between the rotation center and the free end of the support metal fitting (71). An elastic stopper piece (72) that stops the sliding door by friction with the rail (11) is rotatably supported in a vertical plane, and the free end of the support bracket (71) is spring-loaded.
The stopper (7) is urged upward by an urging means such as (79) and is capable of appearing and retracting in the upward transition path of the free end of the support fitting (71).
6) is arranged, and the smoke detector (91),
Operated by a signal from an emergency alarm device (9) such as a fire alarm, the stopper (76) is retracted from the upward transition path of the support fitting (71), and the elastic stopper piece (72) is separated from the rail (11). The evacuation means (78) is connected to each other.

[0005]

[Operation and effect] Support metal fittings (7) for the free stop device (7)
In 1), the free end is normally prevented from rising by the stopper (76), and the elastic stopper (72) is in contact with the rail (11) in a pressed state with its lower end tilted toward the closing side of the sliding door. In this state, the sliding door (8) is stopped on the rail (11). Sliding door (8)
When is pulled in the opening direction, the elastic stopper piece (72) moves along the rail (11) in the same posture. Even if you release your hand from the sliding door (8), regardless of the inclination of the rail (11), the elastic stopper piece
The stopped state is maintained by the frictional resistance between (72) and the rail (11). That is, the sliding door (8) can be kept in an arbitrary open position. When the sliding door (8) is pulled in the closing direction, the elastic stopper piece (72)
Is elastically deformed and the inclination is reversed, and when the hand is released from the sliding door (8), the sliding door (8) is inclined by the rail (11) and self-closing means such as a weight (not shown) connected to the sliding door (8). Closes smoothly.

When the emergency alarm device (9) detects an abnormality and sends a signal when the sliding door (8) is at the fully open position or the intermediate position, the retracting means (78) operates and the stopper (76) is opened. The support fitting (71) is retracted from the turning path. The support bracket (71) is
The free end is raised by the urging force of the spring (79), the elastic stopper piece (72) is brought into a vertical posture accordingly, and the friction with the rail (11) is reduced or the friction with the rail (11) is eliminated.

The force of directing the sliding door (8) in the closing direction by the inclination of the rail (11) and the self-closing means such as the weight and weight of the sliding door (8) causes friction between the rail (11) and the elastic stopper piece (72). If you win, the sliding door (8) will automatically close. As described above, the stop function of the free stop device (7) is released by the signal from the emergency alarm device (9), and the sliding door is closed promptly without the need for manpower to prevent damage from an emergency such as a fire. Can prevent expansion.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 5 and 6, a rail mounting cover is provided over the entire length of the upper edge of a sliding door mounting opening.
Provide (4). The bottom surface of the rail mounting cover (4) is open over the entire length thereof, and the rail frame (1) is provided inside so as to be inclined so that the closing side of the sliding door becomes lower. The wall plate (41) on one side of the cover (4) is detachably bolted.

The rail frame (1) is formed by extrusion molding of aluminum, and has a vertical wall (13) projecting upward over the entire length of one side edge in the longitudinal direction of the horizontal wall (12). It has a substantially L-shape and forms a rail (11) over the entire length of the horizontal wall (12).

The vertical wall (13) of the rail frame (1) has a horizontal wall (1
2 pieces of support pieces (14) and (15) are provided in parallel with the rail frame (1) in parallel with 2), and the openings of both the support pieces are opposed to each other, and the mounting groove (1
6) (17) has been established. As will be described later, racks (5) and (6) are fixedly arranged in a part of the mounting grooves (16) and (17). sliding door
At the upper end of (8), rollers (21) and (21) are pivotally supported on both ends by brackets (2) and (20), and the rollers (21) and (21) roll on the rail (11). It is movably mounted and suspends and supports a sliding door (8).

In the bracket (2) on the closing side of the sliding door (8),
A retaining roller (10) is pivotally supported below the roller (21), and the rail (11) is sandwiched between the roller (21) and the retaining roller (10) from above and below to prevent the roller (21) from slipping off. ing. The bracket (2) is provided with a fluid rotation damper (3) on the opening side of the roller (21) and a free stopper device (7) on the opposite side.

The fluid rotary damper (3) has already been embodied as a sliding door damper device and is well known, so a detailed description thereof will be omitted, but the rotary shaft (31) is externally utilized by utilizing the frictional resistance of the oil contained inside. ) To the input to the), by combining with a one-way clutch, the design of the flow path of the internal fluid, etc. to give resistance to rotation in one direction,
The fluid resistance does not work for the other rotation.

A pinion (32) is attached to the rotary shaft (31) of the fluid rotary damper (3). In the embodiment, as shown in FIG. 1, with the sliding door (8) closed in the left direction, the fluid rotary damper (3) is attached to the bracket (2) so as to have a fluid resistance against counterclockwise rotation. ing.

Mounting grooves (16) (1) above and below the rail frame (1)
In the lower mounting groove (16) of 7), a synthetic resin rack (5) that meshes with the pinion (32) is fixed from a position slightly before the sliding door (8) closes to a closing position. There is. The upper mounting groove (17) is fixed with a synthetic resin rack (6) that meshes with the pinion (32) from a position slightly before the sliding door (8) is fully opened until it is fully opened.

When the fluid resistance of the fluid rotary damper (3) is effective in the clockwise direction, the rack (5) and the rack (6) are
The installation of is upside down. The ends of the racks (5) and (6) are
The back part on the opposite side of the tooth surface is obliquely cut, and the tip end side is gradually formed to be thin, and the flexibility of the thin parts (51) (61) is good.

The free stopper device (7) includes an inclined rail (1
The sliding door (8) that automatically closes by 1) is stopped at an arbitrary position, and a supporting bracket is attached to the vertical wall (23) of the bracket (2).
One end of (71) is rotatably supported by a pivot (73) in a vertical plane, and a vertically elongated ellipse is provided on the support fitting (71) between its free end and the pivot (73). The upper part of the elastic stopper piece (72) is pivotally supported (73a) so that it can swing in a vertical plane.

At the free end of the support metal fitting (71), a protrusion (70) is provided so as to be orthogonal to the rotating surface of the metal fitting, and the protrusion (70) is a slot formed in the bracket (2). It is slidably fitted in (20). The slot (20) is formed in an arc shape with the pivot (73) of the bracket (2) as the radial center.

A solenoid (75) is provided between the support fitting (71) and the roller (21), and a plunger (77) is attached to the solenoid (75) so that the free end of the support fitting (71) is rotated upward. It is linked horizontally so that it can appear and disappear on the transition road. The plunger (77)
The spring (74) is always biased in the pop-out direction,
The stopper (76) is located above the free end of (71) and prevents upward movement of the free end.

The solenoid (75) springs the plunger (77).
It is a retracting means (78) that pulls back against the (74) and retracts from the upward transition path of the support fitting (71). Support bracket (7
The free end of 1) is biased in the upward transition direction by biasing means such as a torsion spring (79).

As shown in FIG. 1, when the sliding door (8) is closed,
Although the elastic stopper piece (72) is disengaged from the rail end (11a) and the elastic stopper piece (72) hangs vertically, when the sliding door (8) is opened, the elastic stopper piece (72) moves to the rail (11). Then, as shown in FIG. 2, the lower end moves on the rail (11) with the lower end kept slightly inclined in the closing direction of the sliding door (8).

The solenoid (75) is electrically connected to a battery housed in the sliding door (8) or a power source (illustrated) such as an AC power source wired so as not to hinder the opening and closing of the sliding door. Emergency detectors (9) such as smoke detectors (91) and fire alarms
It is connected by wire or wirelessly. The term "wireless" as used herein includes not only radio waves but also signal means using light such as infrared rays. When the alarm device (9) detects an abnormality and gives a signal, the solenoid (75) is energized, and the plunger (77) is fixed to the support fitting (71).
Evacuate from the upward transition path.

When the sliding door (8) is closed, the pinion (32) of the fluid rotary damper (3) meshes with the rack (5) on the closing side, and the fluid resistance of the fluid rotary damper (3) acts. sliding door
In (8), the closing speed is slowed a little before closing to reduce the noise of collision with the pillar and keep quiet.

Even when the sliding door (8) is fully opened by hand, the pinion (32) of the fluid rotary damper (3) meshes with the rack (6) on the opening side, and the fluid resistance of the fluid rotary damper (3) acts. And sliding door
(8) opens at a low speed, reduces the collision noise when the sliding door (8) is fully opened, and keeps silence.

While the pinion (32) is disengaged from the racks (5) and (6), the pinion (32) rotates carelessly,
Even if the meshing between the (32) and the racks (5) and (6) may go wrong, the ends of the racks (5) and (6) are thin-walled parts (51) and (61), and the flexibility is good. Yes, pinion (32) and rack (5)
Pinion (32) and rack without overloading (6)
(5) (6) meshes smoothly.

As described above, when the sliding door (8) is opened, the elastic stopper piece (72) moves on the rail (11) with its lower end kept slightly inclined in the closing direction of the sliding door (8). Sliding door in this state
When you release your hand from (8), the elastic stopper piece (72) and rail (11)
Due to the friction resistance of the sliding door regardless of the inclination of the rail (11)
(8) keeps stopped. That is, the sliding door (8) can be kept in an arbitrary open position.

When the sliding door (8) is pulled in the closing direction, the elastic stopper piece (72) is elastically deformed and the inclination is reversed, so that even if the sliding door (8) is released from the hand, the sliding door (8) is railed (11). Closes smoothly due to the inclination of.

When the sliding door (8) is at the fully open position or the intermediate position, when the emergency alarm device (9) detects an abnormality and sends a signal, the solenoid (75) which is the retracting means (78) is activated, The plunger (77), which is the stopper (76), is retracted from the upward transition path of the support fitting (71) against the spring (74). Support bracket
The free end of (71) rises due to the urging force of the torsion spring (79), etc., and the elastic stopper piece (72) assumes a vertical posture accordingly, and the friction with the rail (11) is reduced or the rail (11) is reduced. ), The friction between the elastic stopper piece (72) and the rail (11) becomes small.

When the force for directing the sliding door (8) in the closing direction due to the inclination of the rail (11) and the weight of the sliding door (8) overcomes the friction between the rail (11) and the elastic stopper piece (72), the sliding door (8) ) Automatically closes. As described above, by the signal from the emergency alarm device (9), the stop function of the free stop device (7) is released, and the sliding door is closed promptly without requiring any manpower.
The spread of damage can be prevented.

As shown in FIG. 4, even if the solenoid (75) is de-energized and the plunger (77) is projected by the spring (74), it hits the support metal fitting (71) and the support metal fitting.
(71) cannot be returned to the original position shown in FIG.
In this case, by removing the bolted side wall (41) of the rail mounting cover (4) and pushing the free end of the support fitting (71) downward, the support fitting (71) resists the spring (79). The spindle
It rotates around (73) and descends. When the free end of the support bracket (71) falls below the projecting transition path of the plunger (77), the plunger (77) enters the rotation transition path of the support bracket (71) and prevents the support bracket (71) from rising. Then, the state of FIG. 1 is maintained.

In carrying out the present invention, the rail (11) may be arranged horizontally without tilting, and the present invention may be carried out by connecting the sliding door (8) with a weight that works so as to always pull the sliding door toward the closing side. The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a sliding door device.

FIG. 2 is a front view of the main part on the opening side of the above.

FIG. 3 is a perspective view of the bracket and the components on the bracket.

FIG. 4 is a front view of a state where the stop function of the free stop device is released.

FIG. 5 is a sectional view taken along the line AA of FIG. 1;

FIG. 6 is an overall view of a sliding door device.

[Explanation of symbols]

 (1) Rail frame (11) Rail (2) Bracket (21) Roller (7) Free stop device (71) Support bracket (72) Elastic stopper piece (75) Solenoid (76) Stopper (78) Evacuation means (8) sliding door

Claims (2)

[Claims] A roller (21) is rotatably engaged with a rail (11) to suspend a sliding door (8), and the sliding door is mounted at an arbitrary position on a bracket (2) attached to the upper end of the sliding door. In a self-closing sliding door device equipped with a free stop device (7) for stopping, the free stop device (7) is arranged so that the support metal fitting (71) can swing in a vertical plane along the sliding door with one point as the center. And support metal
Between the rotation center of (71) and the free end,
An elastic stopper piece (72) that stops the sliding door by friction with the rail (11) is rotatably supported in a vertical plane, and the free end of the support bracket (71) is urged by a spring (79) or the like. The stopper (76) is urged upward and the stopper (76) is provided so as to be retractable in the upward transition path of the free end of the support fitting (71).
Are emergency alarm devices such as smoke detectors (91) and fire alarms.
Actuated by a signal from (9), the stopper (76) is retracted from the upward transition path of the support fitting (71) and the retracting means (78) for separating the elastic stopper piece (72) from the rail (11) is connected. A self-closing sliding door device characterized in that 2. The retracting means (78) includes a solenoid and a stopper (7).
6) is a plunger (77) that operates by energizing the solenoid (75) .The plunger (77) is always located on the transition path side of the support fitting (71) by the spring (74) and the elastic stopper piece (72 ) Is urged to the rail (11) side, The self-closing type sliding door device according to claim 1, wherein.