JPH0988415A - Sliding door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relax an impact sound produced when a sliding door is full opened or full closed. SOLUTION: In a relaxation device of a sliding door 8 where a rail 11 is incliningly laid out so that a closing side on the upper edge of a sliding door mounting opening may be lowered, thereby engaging rollably a roller 21 with the rail 11 and suspending down a sliding door 8 and mounting a fluid rotary damper 3 having a relaxation action only in one direction on the sliding door 8 by way of a bracket 2 and relaxing the impact of the sliding door 8 produced when the sliding door 8 is closed by engaging a pinion connected to the rotary shaft of the damper 3, racks 5 and 6 are laid out at two locations in conformity with the closing position and opening position of the sliding door 8. One rack 5 is positioned so that it may be engaged with the pinion below a rolling transfer stroke of the pinion while the other rack 6 is positioned so that it may be engaged with the pinion above the pinion. When the sliding door 8 is full opened, the pinion is engaged with the rack 6, thereby relaxing the impact of the sliding door 8 produced when the door is opened.

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 that automatically closes when a suspension rail is tilted.

[0002]

2. Description of the Related Art This type of sliding door is often found in hospitals, and a damper device is provided to soften the impact when the sliding door is closed so as not to impair quietness. In the damper device, as shown in FIGS. 2 and 5, a fluid rotary damper (3) having a cushioning function in only one direction is mounted on a sliding door (8) via a bracket (2), and a rotary shaft ( The pinion (32) linked to the (31) is meshed with the rack (5) arranged parallel to the slanted rail (11) to slide the door.
Measures to reduce the impact when (8) is closed are implemented.

The above-mentioned damper device has solved the problem of impact noise when closing the sliding door (8), but does not solve the problem of impact noise caused by collision between the sliding door and the pillar when the sliding door is opened by hand. The present invention discloses a sliding door device that can solve the problem of impact noise when closing and opening a sliding door without increasing the number of fluid rotary dampers.

[0004]

According to the sliding door device of the present invention, a rail (11) is tilted at the upper edge of a sliding door mounting opening so that the closing side becomes lower, and a roller (21) rolls on the rail (11). The sliding door (8) is suspended by engaging as much as possible, and the fluid rotary damper (3) having a buffering action in only one direction is mounted on the sliding door via the bracket (2), and is attached to the rotary shaft (31) of the damper. Connected pinion (3
In a sliding door device equipped with a cushioning device that engages 2) with the rack (5) slightly before the sliding door closes and absorbs the impact when the sliding door (8) closes, the rack corresponds to the closing position and the opening position of the sliding door. And one of the racks (5) is meshed with the pinion (32) below the rolling transition path of the pinion (32), and the other rack (6) is of the pinion (32). It is located above the rolling transition path so as to be able to mesh with the pinion (32). At the end of the rack (5) (6) on the pinion (32) entry side, the side opposite to the tooth surface may be cut to form thin-walled parts (51) (61).

[0005]

[Action and effect] Pinion (32) even when sliding door (8) is fully opened
The rack (6) meshes with the rack (6) to reduce the impact when the sliding door (8) is opened. Fluid rotary damper at higher cost than rack
Since the number of (3) is only one, the cost of the entire apparatus can be suppressed. When the thin portion (51) (61) is formed by cutting the side opposite to the tooth surface at the end of the rack (5) (6) on the side where the pinion (32) enters, the pinion (32) becomes the rack (5). While it is disengaged from (6), the pinion (32) rotates carelessly and the pinion (3
Even if the meshing of 2) and the rack (5) (6) may go wrong,
The ends of the racks (5) and (6) are thin-walled parts (51) and (61) and have good flexibility, and the pinion (32) and the racks (5) and (6) are not overly forceful. 32) and the racks (5) and (6) mesh with each other, and a smooth opening / closing operation can be realized.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 5, a rail mounting cover (4) is provided over the entire length of the upper edge of a sliding door mounting opening. 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.

As shown in FIG. 4, the rail frame (1) is formed by extrusion molding of aluminum, and the vertical wall (13) is directed upward along the entire length of one side edge of the horizontal wall (12) in the longitudinal direction. The rail (11) is formed over the entire length of the horizontal wall (12) and has a substantially L-shaped cross section.

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).

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 slipping off. ing. The bracket (2) is provided with a free stopper (7) on the closing side of the roller (21) and a fluid rotary damper (3) on the opposite side.

The free stopper (7) is a slanted rail (11).
This is to stop the sliding door (8) that automatically closes at an arbitrary position, and attach the vertically elongated elliptical elastic stopper piece (72) to the metal fitting (71) attached to the vertical wall (23) of the bracket (2). As shown in FIG. 3, the upper end is pivotally supported so as to be swingable in a vertical plane, and the lower end is placed on the upper surface of the rail (11) in a state of being slightly inclined with respect to the perpendicular of the rail (11).

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

In the embodiment, the metal fitting of the free stopper (7)
One end of (71) is rotatably supported by a support shaft (73), and the other end is adjustable in height by a clamp screw (75) fitted in an elongated hole (74) formed in the vertical wall (23). Since it is fixed, the inclination of the elastic stopper piece (72) with respect to the rail (11) can be optimally adjusted.

The fluid rotary damper (3) has already been implemented as a sliding door damper device and is well known, so a detailed description thereof will be omitted. However, 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. 2, the sliding door (8) is closed on the left side, and the fluid rotary damper (3) is attached to the bracket (2) so as to have 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. Fluid rotary damper
When the fluid resistance of (3) is valid in the clockwise direction, the rack (5) and the rack (6) are mounted upside down.

At the ends of the racks (5) and (6), the back part on the opposite side of the tooth flank is obliquely cut, and the tip side is gradually made thin to bend the thin parts (51) (61). The sex is good.

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

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) and (6) mesh.

As shown in FIG. 2, when the sliding door (8) is closed, the elastic stopper piece (72) is disengaged from the end of the rail (11), and the elastic stopper piece (72) hangs vertically to move the sliding door (8). When opened, the elastic stopper piece (72) hits the rail (11) and moves on the rail (11) with its lower end kept slightly inclined in the closing direction of the sliding door (8) as shown in FIG. When the sliding door (8) is released in this state, the sliding door (8) maintains a stopped state due to the frictional resistance between the elastic stopper piece (72) and the rail (11) regardless of the inclination of the rail (11). That is, an arbitrary open position can be maintained.

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 the sliding door (8)
The sliding door (8) closes smoothly due to the inclination of the rail (11) even when the hand is released from.

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 drawings]

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

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

FIG. 3 is a front view of the main part on the open side.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a perspective view of the bracket and the components on the bracket.

[Explanation of symbols]

 (1) Rail frame (11) Rail (2) Bracket (21) Roller (3) Fluid rotation damper (32) Pinion (5) Rack (6) Rack (7) Free stopper (8) Sliding door

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Iguchi 2-2-151 Higashiota, Ibaraki City, Osaka Prefecture Spindle Building Materials Co., Ltd.

Claims (2)

[Claims] 1. A rail (11) is tilted at the upper edge of a sliding door mounting opening so that the closing side becomes lower, and a roller is mounted on the rail (11).
(21) is rotatably engaged to suspend the sliding door (8), and a fluid rotary damper (3) having a buffering action in only one direction is attached to the sliding door via the bracket (2). Rotation axis (3
In a sliding door device equipped with a cushioning device for engaging the pinion (32) connected to (1) with the rack (5) from a little before the sliding door is closed, to reduce the shock when the sliding door (8) is closed, the rack is a sliding door. Two racks (5) are provided corresponding to the closed position and the open position, and one rack (5) can mesh with the pinion (32) below the rolling transition path of the pinion (32) and the other rack (6). )
Is above the rolling transition path of the pinion (32)
The sliding door (8) is located so that it can be meshed with the pinion (32) and the rack (6) are meshed with each other even when the sliding door (8) is fully opened, and the impact when the sliding door (8) is opened is relaxed. apparatus. 2. The racks (5), (6) are made of synthetic resin, and the end of the pinion (32) intruding side is cut on the side opposite to the tooth surface to form thin-walled parts (51) (61). The sliding door device according to claim 1, wherein: