JP2002201850A - Running speed control rack for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that when the running speed of a sliding door is decreased by meshing of a gear and a rack, the rack is deformed not to conduct the control action properly and generate impulsive sound. SOLUTION: A gear 2 controlled in its rotating force in one direction is fitted to either the sliding door 1 or a fixed part 3 such as a rail, either the fixed part 3 such as the rail opposite to the gear 2 or the sliding door 1 is provided with a rack 4 where the gear 2 meshes, the pitch A of teeth 5 of a rack tip part X is made larger than the reference pitch B, and elasticity is given to the rack tip part X.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control rack used for reducing the traveling speed of a sliding door.

[0002]

2. Description of the Related Art Generally, when controlling a traveling speed when a sliding door is opened and closed, or a traveling speed in a closing direction and an opening speed of an automatically closing sliding door, a rotational force in one direction is controlled. In general, gears equipped with the function of engaging gears are decelerated by meshing with a rack mounted at a position facing the gears.However, gears that have been disengaged and have been separated from the rack mesh with the rack again. In this case, the gears collide with the teeth of the rack, making normal meshing impossible, generating an impulsive sound, and there is a problem in use in a place where silence is required.

The biggest cause of this impulsive sound is that both the gear and the rack are made of a hard material. If at least one of the gear and the rack is made of a soft material, it is possible to eliminate the impulsive sound. However, the load at the time when the gear meshes with the rack deforms the soft material, causing the meshing pitch of the gear and the rack to be out of order, and the gear does not mesh well with the rack, and as a result, the running speed of the sliding door is controlled. May not be able to function properly.

For this reason, the lower part of the foremost part of the rack is cut off to make it float, so that the rack is given elasticity, or an elastic material for noise reduction is applied to the part where the gears of the rack collide. By taking measures such as equipping the gears with the rack, the impact noise was prevented when the gears meshed with the rack.However, when the gears meshed with the rack, the rack was deformed due to the load on the rack tip. It could not be prevented.

[0005]

The problem to be solved is that when the traveling speed of the sliding door is reduced, an impulsive sound is generated when the gear meshes with the rack, and the gear meshes with the rack. When the rack is deformed, the rack is deformed and meshing is not performed smoothly. Therefore, the operation of controlling the traveling speed of the sliding door cannot be functioned properly.

[0006]

The present invention is based on a gear that is attached to one of a sliding door and a fixed portion such as a frame or a rail and has a controlled rotational force in one direction. A rack fixed to a frame, a rail or the like, or a sliding door, wherein the gear is meshed with the rack. The tooth pitch of the rack tip is formed wider than the reference pitch. That is, the elasticity was imparted.

[0007] Then, the uppermost teeth of the rack at which the gears are meshed are cut out to lower the upper part thereof, and the teeth at the tip of the rack are provided with a surface which does not come into contact with the gear teeth when the gears are meshed. It was cut obliquely from the tooth tip to the root of the tooth to form a triangular shape.

[0008] It is also conceivable that the rack tip is formed of an elastic material such as rubber and is connected integrally to the rack tip.

[0009]

A gear whose rotational force in one direction is controlled is attached to one of a sliding door and a fixed portion such as a frame or a rail, and the gear is meshed with the gear so that the traveling speed of the sliding door is increased. A rack for control is mounted on a fixed part such as a frame, a rail, or the like, which is an opposed position controlled by a sliding door, and the rack is arranged so as to mesh with the upper side or the lower side of the gear, and When the sliding door is engaged with the gear and the rack, the rotational force of the gear is controlled, and the traveling speed of the sliding door is controlled to be reduced.

At this time, the pitch of the teeth at the rack tip is
When gears are engaged and a load is applied, they are formed wider than the reference pitch so that they have the reference pitch dimensions.
Even if the rack is deformed and the pitch is reduced due to the shock generated when the gears are meshed, the gears mesh with the racks without obstacles, and the elasticity is given to the rack tip, so the gears Even if there is a collision for some reason when meshing with the rack, the impact of the collision is greatly reduced, and the impact noise is reduced.

Further, since the teeth at the forefront of the rack with which the gears are meshed are formed lower by cutting out the upper part, the gears are smoothly meshed without colliding with the teeth at the foremost part of the rack. You.

Since the rotational force in one direction of the gear is controlled, when the gear is mounted on a sliding door and the rack is arranged in a proper position so as to mesh with the upper and lower sides of the gear, the sliding door is closed. It is possible to control both the traveling speed in the direction in which the sliding door is opened, and the traveling speed in the direction in which the sliding door is opened. The occurrence can be prevented.

[0013] By the way, the surface of the tooth at the tip of the rack, which is not in contact with the teeth of the gear when the gear is meshed, is cut obliquely from the tooth tip to the tooth root to form triangular teeth. The inconvenience of meshing with the gear caused by forming the pitch of the rack tip portion wider than the reference pitch can be eliminated, and the occurrence of stagnation of running of the sliding door can be eliminated.For example, the rack is arranged to mesh with the upper side of the gear. In the case, even if the sliding door configured to be automatically closed by utilizing the weight is lightweight and the traveling in the closing direction may be prevented by its own weight, the inconvenience of meshing may not occur. Therefore, traveling in the closing direction can be performed without any trouble.

By adopting a configuration in which the tip of the rack is formed of an elastic material such as rubber and connected to the tip of the rack, the rack can be attached to an existing conventional rack, and existing racks having various obstacles can be used. Can be improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a sliding door to which a gear 2 whose rotational force is controlled in one direction is mounted, and a fixed portion 3 such as a frame or rail.
A rack 4 with which the gear 2 is engaged is mounted on the rack 4.
When the gear 2 is meshed again, the rotational force of the gear 2 is controlled.

In the embodiment shown in the drawings, the sliding door 1
Is a system that is closed to the left (in the direction of the arrow in FIG. 1),
Since the rotational force of the gear 2 in the direction of the arrow in FIG. 2 is controlled, in order to control the traveling speed in the direction in which the sliding door 1 is closed, the rack 4 is engaged with the lower side of the gear 2. In order to control the traveling speed in the direction in which the sliding door 1 is opened, the rack 4 is arranged so as to be meshed with the upper side of the gear 2.
The basic mounting position of the sliding door 1 is near the end on the closing side when controlling the traveling of the sliding door 1 in the closing direction, and the opening position is controlled when controlling the traveling of the sliding door 1 in the opening direction. Near the middle of the part or the open end, depending on the mounting position of the gear 2, or
The mounting position is changed as needed.

The rack 4 is provided with the gear 2
Is disengaged and disengaged, and the pitch A of the teeth 5 of the rack tip portion X on the side to be meshed is again changed to the reference pitch B so that the pitch A becomes the reference pitch dimension when a load is applied.
In addition to being formed wider, the front end portion X of the rack 4 is formed in a state in which it can be swung in a direction opposite to the gear 2 when the gear 2 collides with and meshes with the gear 2 to provide elasticity. In addition, the upper part of the most advanced tooth 6 is notched and lowered.

The width of the pitch A of the rack tip X is, for example, about 5 to 15% wider than the reference pitch B.
For example, it is about な い し to １ ／ of the total tooth length.

Further, the teeth 5 of the rack tip portion X are
The surface of the side of the gear 2 that does not come into contact with the teeth when meshing is cut obliquely from the tooth tip to the tooth root to form a triangular shape.

In the embodiment shown in the drawings, the rack 4 and the rack tip portion X are formed in series, but the rack tip portion X is formed separately from the rack 4 by using an elastic material such as rubber, for example. The system may be formed integrally with the rack 4 by connecting it to the front end.

[0021]

As described above, according to the present invention, even if the rack is deformed due to the load when the gear meshes with the rack, the gear meshes with the rack without any trouble, and the sliding door is opened and closed. The traveling speed at the time, the traveling speed in the closing direction of the automatic closing sliding door, and the traveling speed at the time of opening can be surely controlled.

Further, since the gears and the rack are engaged without any obstacle, the generation of an impact sound at the time of the engagement of the gears and the rack is eliminated, and the use in a place where quietness is required can be performed with confidence.

Further, even if the rack tip is formed of an elastic material such as rubber, the upper part of the tooth at the tip of the rack is notched, and the pitch of the teeth at the rack tip is wider than the reference pitch. Therefore, even if the soft material is deformed by the load when the gear meshes with the rack, the pitch of the rack will be the reference pitch and the gear will mesh well with the rack, and the function of controlling the running speed of the sliding door will function correctly. It can be done.

[Brief description of the drawings]

FIG. 1 is a front view of a use state.

FIG. 2 is an explanatory diagram of a state where a gear is meshed with a tooth at the tip of a rack.

FIG. 3 is an explanatory view of a state where a gear is meshed with a rack distal end portion.

FIG. 4 is an explanatory view of a rack tip portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sliding door 2 Gear 3 Fixed part 4 Rack 5 Rack tip tooth 6 Rack tip tooth 7 Cut part X Rack tip A Rack pitch tooth pitch B Reference pitch

Claims (4)

[Claims] 1. A gear (2) attached to one of a sliding door (1) and a fixed part (3) such as a frame or a rail and having a controlled rotational force in one direction, a frame, a rail, etc. And a rack (4) which is attached to either the fixed part (3) or the sliding door (1) and meshes with the gear (2).
Is formed wider than the reference pitch B,
A rack for controlling the traveling speed of a sliding door in which elasticity is imparted to a rack tip X. 2. A gear (2) attached to one of a sliding door (1) and a fixed part (3) such as a frame, rail, etc., and a rotational force in one direction is controlled; a frame, a rail, etc. And a rack (4) which is attached to either the fixed part (3) or the sliding door (1) and meshes with the gear (2).
Is formed wider than the reference pitch B,
A rack for controlling the running speed of a sliding door, which is provided with elasticity to a rack tip portion X and cuts down at the top of the tooth (6) at the foremost end of the rack where the gear (2) meshes. 3. The tooth (5) of the rack tip portion X cuts obliquely from the tooth tip to the root of the tooth (5) when the tooth (5) meshes with the tooth of the gear (2). 7) The running speed control rack for a sliding door according to claim 1 or 2, wherein the rack is formed in a triangular shape. 4. The running of the sliding door according to claim 1, wherein the rack tip portion X is formed of an elastic material such as rubber and is integrally connected to a tip portion of the rack (4). Rack for speed control.