JP2937828B2 - Self-closing sliding door device - Google Patents

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 automatically closes depending on 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 via a roller on a rail inclined low in the closing direction via a roller, and the weight of the sliding door is linked to the inclination of the rail and the sliding door, or by the weight of the sliding door. Mechanisms for automatically closing a sliding door 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.

[0003] The sliding door in which the free stop device is implemented has an advantage that the sliding door can be held at an arbitrary open position, but requires an external force when closing, and must rely exclusively on human power. Accordingly, 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 in which the stop function is canceled by a signal from an emergency alarm device and the sliding door can be automatically closed in an emergency without losing the intermediate stop function of the free stop device. .

[0004]

The sliding door device according to the present invention comprises a rail (1).
A free stop device (7) for rollingly engaging a roller (21) with the roller (21), suspending the sliding door (8), and stopping the sliding door at an arbitrary position on a bracket (2) attached to the upper end of the sliding door. ), A free stop device (7)
The support bracket (71) is arranged so as to be swingable about a point in a vertical plane along the sliding door, and between the rotation center of the support bracket (71) and the free end, the support bracket (71) has The elastic stopper piece (72) for stopping the sliding door by friction with the rail (11) is rotatably suspended in a vertical plane, and the free end of the support bracket (71) is spring-loaded.
(79), and the stopper (7) so as to be able to protrude and retract in the upward transition path at the free end of the support bracket (71).
6), the stopper (76) has a smoke detector (91),
Activated by a signal from the emergency alarm device (9) such as a fire alarm, the stopper (76) is retracted from the upward transition path of the support bracket (71), and the elastic stopper piece (72) is separated from the rail (11). The evacuation means (78) is connected.

[0005]

[Operation and effect] The support bracket (7) of 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 the lower end inclined to the closing side of the sliding door. In this state, the sliding door (8) is stopped on the rail (11). Sliding door (8)
Is pulled in the opening direction, the elastic stopper piece (72) slides along the rail (11) in the same posture and moves. Even if you release your hand from the sliding door (8), regardless of the inclination of the rail (11), the elastic stopper
The stationary state is maintained by the frictional resistance between (72) and the rail (11). That is, the sliding door (8) can be kept at 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. If you take your hand off 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 opened position or the intermediate position, the evacuation means (78) is operated to move the stopper (76). The support bracket (71) is retracted from the rotation transition path. The support bracket (71)
The free end rises due to the urging force of the spring (79), and accordingly, the elastic stopper piece (72) assumes a vertical posture, so that friction with the rail (11) is reduced or friction with the rail (11) is eliminated.

The force for moving the sliding door (8) in the closing direction by the inclination of the rail (11) and the self-closing means such as the own weight and weight of the sliding door (8) causes friction between the rail (11) and the elastic stopper piece (72). , The sliding door (8) closes automatically. 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 quickly closed without requiring any human intervention, thereby causing a fire or other emergency damage. Expansion can be prevented.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 5 and 6, a rail mounting cover is provided on the upper edge of a sliding door mounting opening over its entire length.
(4) is provided. The rail mounting cover (4) has an open bottom surface over the entire length, and a rail frame (1) is provided inside so as to be inclined so that the closing side of the sliding door is lower. The wall plate (41) on one side of the cover (4) is detachably bolted.

The rail frame (1) is formed by extruding 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).
Two supporting pieces (14) and (15) are projected from the rail frame (1) in parallel with (2), and the two supporting pieces have mounting grooves (1) with openings facing each other.
6) (17) has been established. Racks (5) and (6) are fixedly provided in a part of the mounting grooves (16) and (17) as described later. sliding door
At the upper end of (8), rollers (21) and (21) are pivotally supported at both ends via brackets (2) and (20), and the rollers (21) and (21) are transferred to the rail (11). The sliding door (8) is suspended and supported movably.

On 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 being detached. ing. The bracket (2) is provided with a fluid rotary 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) is already implemented as a damper device for a sliding door, and is well-known, so a detailed description thereof will be omitted. However, the rotary shaft (31) is externally applied by utilizing the frictional resistance of oil enclosed therein. ), Which provides resistance to one-way rotation by combining with a one-way clutch, designing the flow path of internal fluid, etc.
There is no fluid resistance for the other rotation.

A pinion (32) is mounted on a rotation shaft (31) of the fluid rotary damper (3). In the embodiment, as shown in FIG. 1, the closing direction of the sliding door (8) is on the left side, and the fluid rotary damper (3) is mounted on the bracket (2) so that fluid resistance is effective against the counterclockwise rotation. ing.

The upper and lower mounting grooves (16) (1) of the rail frame (1)
Of the 7), a synthetic resin rack (5) meshing with the pinion (32) is fixed to the lower mounting groove (16) from a position slightly before the sliding door (8) closes to a position to close the sliding door (8). I have. The synthetic resin rack (6) meshing with the pinion (32) is fixed in the upper mounting groove (17) from a position slightly before the sliding door (8) is fully opened until the sliding door (8) is fully opened.

When the fluid resistance of the fluid rotary damper (3) is effective clockwise, the racks (5) and (6)
Is upside down. The ends of the racks (5) and (6)
The back part on the opposite side of the tooth surface is cut obliquely, and the tip side is gradually formed thin, so that the thin parts (51) and (61) have good flexibility.

The free stopper device (7) is provided with an inclined rail (1).
The sliding door (8), which is automatically closed by (1), stops at an arbitrary position, and is supported on the vertical wall (23) of the bracket (2).
One end of (71) is pivotally supported on a pivot (73) in a vertical plane so as to be rotatable in a vertical plane, and the support bracket (71) has a vertically long ellipse between its free end and the pivot (73). The upper part of the elastic stopper piece (72) is pivotally supported (73a) so as to be swingable in a vertical plane.

At the free end of the support bracket (71), a projection (70) is provided so as to project perpendicularly to the rotation surface of the bracket, and the projection (70) is provided with a slot formed in the bracket (2). (20) is slidably fitted. The slot (20) is formed in an arc shape with the pivot (73) of the bracket (2) as a radial center.

A solenoid (75) is provided between the support (71) and the roller (21), and a plunger (77) is mounted on the solenoid (75) to rotate the free end of the support (71) upward. It is connected sideways so that it can appear on the transition road. The plunger (77)
The spring (74) is normally urged in the protruding direction, and
A stopper (76) is located above the free end of (71) and prevents the free end from moving upward.

The solenoid (75) uses a plunger (77) as a spring.
Evacuation means (78) for retracting against the (74) and retreating from the upward transition path of the support bracket (71). Support bracket (7
The free end of 1) is urged in the upward transition direction by urging means such as a torsion spring (79).

As shown in FIG. 1, with the sliding door (8) closed,
The elastic stopper piece (72) is disengaged from the rail end (11a) and the elastic stopper piece (72) hangs vertically, but when the sliding door (8) is opened, the elastic stopper piece (72) is attached to the rail (11). In this case, as shown in FIG. 2, the lower end moves on the rail (11) while maintaining a state where the lower end is slightly inclined in the closing direction of the sliding door (8).

The solenoid (75) is electrically connected to a battery (shown) such as a battery housed in the sliding door (8) or an AC power supply wired so as not to hinder opening and closing of the sliding door. Emergency alarms (9) such as smoke detectors (91) and fire alarms
They are 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 light. When the alarm device (9) detects an abnormality and issues a signal, the solenoid (75) is energized and the plunger (77) is supported by the support bracket (71).
Retreat from the upward transition path.

However, when the sliding door (8) closes, 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 reduced slightly shortly before closing to reduce the sound of collision with the pillar and maintain silence.

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 sound when the sliding door (8) is fully opened, and keeps silence.

While the pinion (32) is out of the racks (5) and (6), the pinion (32) rotates carelessly,
Even if the engagement between the racks (32) and the racks (5) and (6) may be out of order, the ends of the racks (5) and (6) are thin portions (51) and (61), and the flexibility is good. Yes, pinion (32) and rack (5)
(6) The pinion (32) and the rack are not overwhelmed.
(5) and (6) mesh smoothly.

As described above, when the sliding door (8) is opened, the elastic stopper piece (72) moves on the rail (11) while the lower end thereof is 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)
Sliding door regardless of the inclination of rail (11)
(8) keeps the stopped state. That is, the sliding door (8) can be kept at 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, the sliding door (8) is moved to the rail (11). Closes smoothly by the inclination of.

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 solenoid (75) as the evacuation means (78) is operated, The plunger (77) serving as the stopper (76) is retracted from the upward transition path of the support bracket (71) against the spring (74). Support bracket
In (71), the free end is raised by the urging force of the torsion spring (79) and the like, so that the elastic stopper piece (72) is in a vertical posture, and the friction with the rail (11) is reduced or the rail (11) is ), The friction between the elastic stopper piece (72) and the rail (11) decreases.

When the force for moving 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) is moved. ) Closes automatically. As described above, the stop function of the free stop device (7) is released by a signal from the emergency alarm device (9), and the sliding door is closed promptly without any human intervention.
The spread of damage can be prevented.

As shown in FIG. 4, even if the power supply to the solenoid (75) is cut off and the plunger (77) tries to protrude by the spring (74), the plunger (77) hits the support fitting (71), and the support fitting (71) is pressed.
(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 pressing the free end of the support bracket (71) downward, the support bracket (71) is pressed against the spring (79). And the spindle
It rotates around (73) and descends. When the free end of the support bracket (71) goes down from 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 practicing the present invention, the rail (11) may be provided horizontally without tilting, and the present invention may be implemented by connecting a sliding door (8) to a weight acting to constantly pull the sliding door to the closing side. The present invention is not limited to the configuration of the above embodiment, and various modifications are possible 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 a main part on the opening side of the above.

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

FIG. 4 is a front view of a state where a stop function of a 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

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E05F 5/00 E05F 1/02-1/04

Claims (2)

(57) [Claims] 1. A sliding door (8) is suspended by rollingly engaging a roller (21) with a rail (11), and the sliding door is placed at an arbitrary position on a bracket (2) attached to the upper end of the sliding door. In a self-closing sliding door device provided with a free stop device (7) for stopping, the free stop device (7) is provided so that a support bracket (71) can swing about a point in a vertical plane along the sliding door. And support bracket
The support bracket (71) between the center of rotation of (71) and the free end includes:
An elastic stopper piece (72) for stopping the sliding door by friction with the rail (11) is rotatably suspended in a vertical plane, and the free end of the support bracket (71) is biased by a biasing means such as a spring (79). A stopper (76) is provided so as to be able to protrude and retreat in the upward transition path of the free end of the support bracket (71) while being urged upward, and the stopper (76)
Has emergency alarm devices such as smoke detectors (91) and fire alarms
Activated by a signal from (9), the stopper (76) is retracted from the upward transition path of the support bracket (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 by the above-mentioned. 2. The retracting means (78) includes a solenoid and a stopper (7).
Reference numeral 6) denotes a plunger (77) that is activated by energizing the solenoid (75) .The plunger (77) is always located on the transition path side of the support bracket (71) by a spring (74), and has an elastic stopper piece (72). ) Is biased toward the rail (11) side, the self-closing type sliding door device according to claim 1.