JP2002188355A - Door closing speed controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control a closing speed in a self-closing door. SOLUTION: A braking device 5 capable of braking the rotation of a rotating drum 8 when a wire 9 is unwound is installed on a door 1. A locking piece 34 is fixed to the end part of the wire 9 wound on the rotating drum 8. A locking body 37 is installed on a rail 4 so that the locking piece 34 can be engaged therewith. When the door 1 is closed, the locking piece 34 is engaged with the locking body 37 during the movement of the door, and the wire 9 is unwound from the rotating drum 8. In this case, since the rotation of the rotating drum 8 is braked, the closing speed of the door is controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a sliding door, a folding door,
For a self-closing door supported by a hanging vehicle running on a rail such as a balance door, etc., especially when closing the door,
The present invention relates to a door closing speed control device capable of controlling a closing speed of a door so as not to close suddenly.

[0002]

2. Description of the Related Art A self-closing type door is urged in a closing direction by various urging means such as a spring type, an inclined rail type and a weight type, and automatically closes when the hand is released from the door at an open position. It is configured to start moving toward the position. At this time, a means for reducing the speed is provided so that the door does not close suddenly. However, since the conventional device uses a cylinder device, a gear device, or the like, the device becomes complicated or the gears mesh. There is a problem that a noise is generated and the deceleration section cannot be easily adjusted.

[0003]

The problem to be solved by the present invention is as follows.
It is an object of the present invention to provide a door closing speed control device capable of reliably and freely controlling the closing speed of the self-closing door as described above so that the door does not suddenly close from an open position.

[0004]

According to the present invention, there is provided a braking device having a rotating drum for winding a wire, wherein the braking device applies a braking to the rotation of the rotating drum when the wire is pulled out, and an end portion of the wire. And a locking member having an engaging portion with which the locking piece can be engaged, the door being supported by a hanging vehicle running on the rail and being urged in the closing direction. When moving in the closing direction from the open position, the braking device or so that the locking piece of the wire is engaged with the engaging portion of the locking body during the movement and the wire is pulled out from the braking device. A door closing speed control device is provided, wherein one of the locking members is provided on the door side and the other is provided on the fixing portion side, and the above-mentioned problem is solved.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be applied to various self-closing doors such as sliding doors, folding doors, balance doors and the like, which are supported by a hanging vehicle running on a rail. Shows an embodiment in which the present invention is applied to a self-closing sliding door.

FIGS. 1 and 2 show an upper part of a door (1). The door (1) has a rail (4) provided with a hanging wheel (3) provided on a hanger (2) in a door pocket or the like. ) It is supported so that it can be opened and closed by running on it. A spring-type self-closing unit or the like (not shown) is provided in the door pocket on the closed end side, and a wire (not shown) of the self-closing unit is connected to the door, and the wire is restored to a spring inside the unit. By taking up the door with force, the door is always drawn in the closing direction.

A braking device (5) for applying a brake to the movement of the door (1) in the closing direction is provided on either the door side or the fixed part side such as the rail and the door pocket as described later. Although it can be provided, in the figure, the door (1)
Is attached to the hanger (2) with a screw (6).
The braking device (5) has a rotating drum (8) rotatably mounted on a drum shaft (7) and a wire (9) wound around the rotating drum (8). As shown in FIG. 6B, the pin (10) provided on the rotary drum (8) and the main body (1)
The spring mounting portion (13) in the cover (12) fixed to (1) (Fig. 5
(A)), or as shown in FIG.
A spiral spring (15) such as a mainspring is provided between the spring mounting portions (14) provided in 1), and the drum is rotated by the restoring force of the spring (15).

On the side of the rotary drum (8) opposite to the side holding the spring (15), the drum shaft (7) is rotated when the wire (9) is pulled out from the rotary drum (8). When the rotary drum (8) rotates by the restoring force of the spring (15) and winds the wire (9), the drum shaft (7)
A one-way clutch is provided to prevent transmission of rotational force to the clutch.

The one-way clutch can be constructed in various ways. In the drawing, as shown in FIG. 6A, a check plate (16) fixed to the drum shaft (7) in a non-rotating state is provided.
A stop piece (19) pivotally attached to a rotary drum (8) by a pin (18) so as to engage with notched edges (17) provided on the periphery of the check plate (16); The stop piece (19) with the check plate (1
Press spring wound around pin (20) to press against the periphery of 6)
(21). When the rotary drum (8) rotates in the counterclockwise direction (opening direction) in FIG. 6A, the stop piece (19) slides on the periphery of the check plate (16). Although not engaged with the notched edges (17), (17), when the rotary drum (8) rotates in the clockwise direction (closed door direction), the tip engages with the notched edges (17), (17). , The check plate (16)
, The drum shaft (7) can be rotated together with the drum (8).

A rotation resistance is given to the rotation of the drum shaft (7) by viscous oil, so that the rotation of the rotary drum (8) is braked. FIG. 7 shows an embodiment of such a braking device, in which a drum shaft (7) inserted into a receiving hole (22) of the main body (11) rotates together with the drum shaft (7). A rotating piece (23) is provided,
Between the rotating pieces (23), there are provided fixing pieces (24) attached to the main body (11) in a non-rotating state. The rotary piece (23) and the fixed piece (24) are provided so as to be movable in the axial direction, and preferably are welted so as to uniformly maintain a gap generated between the rotary piece (23) and the fixed piece (24). A washer (25) is provided, and a predetermined amount of oil (26) is sealed in the receiving hole (22).

A movable seat (2) is provided at the lower end of the drum shaft (7).
7) is fitted movably in the axial direction, a bottom seat (28) is attached below the bottom in the figure, and the tip (30) of an adjusting screw (29) screwed to the bottom seat (28) is It is in contact with the movable seat (27). An oil seal (31) is provided in the bottom seat and other suitable places to prevent oil from flowing out.

When the drum shaft (7) is to be rotated, the rotating piece (23) attached to the drum shaft (7) rotates while receiving the viscous resistance of oil, so that the rotation is braked. The braking force varies depending on the size and number of the rotating piece and the fixed piece, and the amount of screwing of the adjusting screw (29) is changed to move the movable seat (27) in the axial direction. (23), it can be adjusted by changing the gap between the fixing pieces (24).

The braking device (5) has a holding frame (3) opposed thereto.
2) and (32) are extended downward in FIG.
A substantially V-shaped receiving groove (33) opening laterally is formed in (32), and a wire extends in the width direction of the holding frames (32), (32) between the receiving grooves (33), (33). The locking piece (34) provided at the end of (9) is locked. The engaging piece (34) is preferably formed in a substantially rod shape from an elastic material such as a plastic material. ) Is tightly connected to the end of the wire (9) wound therearound.

An engaging body (37) having an engaging portion (36) with which the engaging piece (34) can be engaged is formed. In FIG. 1, the locking body (37) is provided on the rail (4), but may be provided on the door (1) side. Note that the locking body (3
When 7) is provided on the door side, the braking device (5) may be provided on a fixed side such as a rail or a door pocket. The locking body (37)
Has locking plates (39) and (39) on both sides of an insertion groove (38) through which a wire (9) is inserted, as shown in FIGS. 39) has a substantially V-shaped receiving groove (40) serving as an engaging portion (36).
Is open to the side. Note that the engaging portion may be formed on an appropriate hook or the like instead of the receiving groove.

The width of the insertion groove (38) of the locking body (37) is determined by the width of the holding frame (32), (32) of the braking device (5) along the locking body (37). Are formed to be wider than the width of the holding frames (32), (32) so that they can pass through, but the width between the holding frames (32), (32) is wider than the width of the locking body (37). The holding frames (32), (32) may be formed so as to pass outside the locking body (37).

The length of the locking piece (34) is equal to the length of the locking body (37).
Between the receiving grooves (40), (40) and the holding frame (3) of the braking device (5).
2) and (32) are formed to a length that can be securely locked between the receiving grooves (33) and (33). The receiving grooves (40), (40) and the receiving grooves (3
When the door (1) moves from the opened position to the closed direction, the opening direction of (3), (33) is such that the holding frame (3) of the braking device (5) is closed.
Locking piece (34) locked in receiving grooves (33), (33) of (2), (32)
Engages with the receiving grooves (40), (40) of the locking body (37) during the movement,
On the other hand, when the door (1) moves from the closed position to the open position, the locking pieces (34) locked in the receiving grooves (40), (40) of the locking body (37) move. On the way, the receiving groove (33) of the braking device (5),
(33) It opens in the direction to be locked.

That is, as shown in FIG. 1, when the braking device (5) is provided on the door side and the locking body (37) is fixed on the rail side, the receiving grooves (33) and (40) are used. Are open in the opening direction of the door. When the braking device (5) is fixed to the rail side and the locking body (37) is provided on the door side, the receiving groove is used.
(33) and (40) may be opened in the closing direction.

The distance between the locking member (37) and the braking device (5) is determined according to the range in which speed control is desired. Figure 1,
In the embodiment shown in FIG. 2, a plurality of mounting holes (not shown) are formed in the rail so that the mounting position of the locking body (37) can be changed, and locking is performed using a desired mounting hole. Although the body is attached, the attachment position may be adjusted by other appropriate methods and structures.

In FIGS. 1 and 2, when the door (1) is opened by hand, the distance between the braking device (5) and the locking piece (34) is reduced, and the restoring force of the spring (15) is accordingly increased. The rotating drum (8) rotates, and the wire (9) is wound around the rotating drum (8). At this time, the one-way clutch uses a check plate
(16) and the stop piece (19) are not locked and the drum shaft (7) does not rotate, so that the door (1) opens smoothly.

During the opening of the door (1), the holding frames (32), (3)
The locking piece (34) locked by the engaging portion (36) of the locking body (37) enters the receiving grooves (33), (33) of (2), and is further moved in the door opening direction. And receiving grooves (33), (33) of the holding frames (32), (32).
Since the locking piece (34) is engaged with the wire (9), the winding of the wire (9) is stopped (FIGS. 3 and 4).

When the hand is released from the door in the open position shown in FIGS. 3 and 4, the door moves in the door closing direction by the self-closing force of the self-closing unit or the like. During the movement, the locking piece (34) locked on the holding frame (32) of the braking device (5) is replaced with the locking body (37).
The wire (9) is then rewound with the movement of the door (FIG. 1). At this time, the stop piece (19) and the check plate (16) are engaged by the rotation of the rotary drum (8), so that the rotary drum (8) and the drum shaft (7) are connected, and the drum shaft ( The closing speed of the door is controlled and adjusted by starting the operation of the braking device (5) via 7). The braking force of the braking device (5) is set to be weaker than the self-closing force of the self-closing unit.

The spring (15) is caught by the rotation of the rotary drum (8) when closing the door (1), whereby the restoring force for rotating the rotary drum (8) when the door is opened. Is stored in the spring (15).

[0023]

According to the present invention, there is provided a braking device configured as described above to apply a braking to the rotation of the rotating drum when the wire is rewound, and when the door is moved from the open position to the closed direction, During the movement, the locking piece provided on the wire is engaged with the locking body and the wire is rewound from the rotary drum, and the closing action of the door is controlled by the braking action of the rotary drum generated thereby. Therefore, a wide range of speed control can be performed by changing the positions of the braking device and the locking body, and the locking piece provided at the end of the wire can be made of an elastic body such as a plastic material, so that the gear As described above, no impact sound is generated at the time of engagement, the structure is simple and economical, and the device can be used comfortably.

[Brief description of the drawings]

FIG. 1 is a front view of an upper portion of a door when a closing speed of the door is controlled according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a front view of the upper part of the door when the closing speed of the door is not controlled.

FIG. 4 is a plan view of FIG. 3;

FIGS. 5A and 5B are plan views showing a braking device, and FIGS.

6A is a sectional view taken along line AA of FIG. 5A, and FIG.
Is a sectional view taken along line BB.

FIG. 7 is a cross-sectional view of a main body portion, showing one embodiment of a braking device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Door 3 Hanging wheel 4 Rail 5 Braking device 7 Drum shaft 8 Rotating drum 9 Wire 15 Spring 16 Check plate 19 Stop piece 32 Holding frame 33 Receiving groove 34 Locking piece 36 Engaging part
37 Locking body 40 Receiving groove

Claims (3)

[Claims] 1. A braking device having a rotating drum for winding a wire and applying a brake to the rotation of the rotating drum when the wire is pulled out, an engaging piece provided at an end of the wire, A door having an engaging portion with which a stop piece can be engaged is provided, and a door supported by a hanging vehicle running on the rail and urged in the closing direction moves from the opening position to the closing direction. When doing
Either the braking device or the locking member is provided on the door side such that the locking piece of the wire engages with the engagement portion of the locking member during the movement and the wire is pulled out from the braking device. And a door closing speed control device characterized in that the other is provided on the fixed portion side. 2. The braking device has a holding frame so as to pass along the locking body when the door moves, and the locking piece locks on the holding frame when a wire is wound around a rotating drum. The door closing speed control device according to claim 1, wherein the door closing speed is locked by the locking body when passing through the locking body. 3. The braking device according to claim 1, further comprising: a drum shaft provided with rotational resistance by oil viscosity, and a one-way clutch connecting the rotary drum and the drum shaft when the rotary drum rotates in a direction in which the wire is pulled out. Item 2. A door closing speed control device according to Item 1.