JP2559065Y2 - Drive protection 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 protection device for a driving mechanism, and more particularly, to a protection device when a driven body is stopped at a predetermined position.
The present invention relates to a device capable of preventing a drive mechanism from being damaged due to the application of a predetermined force or more to the driven body, resulting in an overload of the drive mechanism.

[0002]

2. Description of the Related Art Conventionally, for example, a door device for a ticket gate stops a door (driven body) at a position where a passage is closed when the operation of the ticket gate is stopped or when a passenger (passenger) is blocked. A stopper mechanism is provided to prevent the door from being opened further. The stopper mechanism engages a locking member driven by a spring with a concave portion of a positioning member provided integrally with the drive shaft of the drive mechanism when the door closes the passage, thereby preventing rotation of the drive shaft. It is configured to be.

[0003]

However, in the conventional driving mechanism for driving the driven body, the positioning member and the locking member are engaged when the driven body is stopped at a predetermined position. Therefore, when a force greater than a predetermined value is applied to the driven body in this state, for example, in the case of the above-described door device for a ticket gate, when the user forcibly opens the door and tries to pass, the door is There is a possibility that an excessive force, that is, an overload occurs in the drive mechanism due to the leverage, and the drive mechanism is damaged.

Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object of the present invention is to eliminate the overload even if an overload occurs in a driving mechanism via a driven body. It is an object of the present invention to provide a drive mechanism protection device capable of protecting the mechanism.

[0005]

In order to achieve the above object, the present invention provides a driven member connected to a driving source, and a concave portion of a positioning member provided integrally with the driving source.
Jo of engaged with the roller of the locking member in the engaged portion, a protection device for a drive mechanism that can stop the driven member at a predetermined position, the engagement portion of the upper Symbol recessed, when the upper SL driven body is stopped is positioned, the roller of the locking member when a predetermined or more force is applied to the driven member
It is characterized that you have an elastic material that bends so as to release the engagement.

[0006]

[Action] In the above structure, the recess-like engagement of the positioning member
Roller engaging member to the engaging portion is engaged with when the driven body is stopped at a predetermined position, can to a predetermined or more force is applied to the driven member, the roller of the locking member is Provided on the engagement part
Is buckling song while rotating the elastic material are solved engagement apart, it is possible to operate the driven member.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a schematic configuration when an apparatus according to an embodiment of the present invention is applied to a ticket gate, FIG. 2 is a view taken along line AA, and FIG. 3 is a schematic configuration when a door closes a passage. FIG.

The door (driven body) 1 has one end rotatably supported by a shaft 1a provided on the passage P side of the ticket gate main body a, and extends to the opposite side to the passage side P. The base 2 of the provided door 1 is connected via a connecting rod 4 to a drive mechanism 3 provided in the ticket gate main body a.

The drive mechanism 3 has a motor shaft 5 of a reversible motor with a speed reducer (not shown), a bevel gear 7 meshed with a bevel gear 6 provided on the motor shaft 5, and has a rotating shaft center direction. Comprises a drive shaft 8 positioned in the vertical direction, that is, parallel to the direction of the shaft 1a, and an arm 9 provided at an upper end of the drive shaft 8. One end (the end opposite to the end supported by the base 2)
Is supported.

The positioning member 10 is formed integrally with the arm 9 below the arm 9 and has a drive shaft 8.
And a disc having a recess 11 formed by cutting out a part of the periphery. The concave portion 11 is provided with an L-shaped leaf spring (engaging portion) 12. The strength of the leaf spring 12 is determined so that a roller 14 to be described later can bend the free end piece 12a of the leaf spring 12 when a predetermined force or more is applied to the door 1 (FIG. 3). See dashed line).

In the drawing, reference numeral 13 denotes a locking member which is rotatably supported at the center thereof and has a roller 14 at one end thereof. A drive shaft 17 of a solenoid 16 is journaled at the other end.

Next, the operation of the present embodiment will be described.
Now, as shown in FIG. 1, to close the passage P from the state where the door 1 is stored in the ticket gate main body a and the passage P is open, the drive shaft 8 is rotated in the direction of arrow a. That is, when the door 1 rotates about the shaft 1a in the direction indicated by the arrow C and stops at the closing position substantially orthogonal to the direction of the passage P, the connecting rod 4 moves rightward as indicated by the arrow B. , The arm 9 rotates in the direction of arrow a.

When a force greater than a predetermined value is applied to the door 1 from the direction of the arrow E in the closed state, for example, when the user forcibly pushes the door 1 open, the connecting rod 4 moves in the direction of the arrow (The left direction), and the movement of the connecting rod 4 causes the positioning member 10 to move in the direction of arrow G via the arm 9. By the movement of the positioning member 10, the free end piece 12a of the leaf spring 12 is bent as shown by a chain line in FIG. 3 to allow the roller 14 to pass, and the drive shaft 8 is rotated.

When a predetermined amount or more is added to the door 1 from the side opposite to the direction of the arrow E, the connecting rod 4 moves in the direction opposite to the direction of the arrow, causing the positioning member 10 to move in the direction opposite to the direction of the arrow. In this case, the roller 1
4 moves relative to the direction in which the free end piece 12a of the leaf spring 12 does not exist, so that the drive shaft 8 can rotate, and there is no risk of damaging the drive mechanism 3.

As described above, in the apparatus of this embodiment, the engaging portion of the positioning member 10 for positioning and fixing the stop position when the door 1 closes the passage P is constituted by the leaf spring 12, so that the door 1 When a predetermined force or more is applied, the roller 14 engaged with the leaf spring 12 can be released, so that the overload applied to the drive mechanism 3 can be effectively released.

FIG. 4 shows a device according to another embodiment of the present invention, which has a positioning member 20 which is reciprocated in the left-right direction by a driving mechanism (not shown). An example of a device having such a reciprocating positioning member 20 is a sliding door type automatic door device. A recess 21 is provided in a part of the upper end surface of the reciprocating positioning member 20, and a U-shaped leaf spring 22 smaller than the shape of the recess is provided in the recess. The U-shaped leaf spring 22 is formed in such a size that the roller 14 of the locking member 13 is inserted.

Therefore, when the positioning member 20 is moved by the driving mechanism and the concave portion 21 is positioned on the roller 14, the roller 14
It falls into 2 and is inserted. Thereby, the positioning member 2
0 is positioned and fixed at that position. In this state, when a predetermined force or more acts on the positioning member 20 from either the left or right direction via the driven body (not shown), the roller 14 is guided by the bending of the leaf spring 22 and escapes from the inside of the concave portion 21. Thus, the movement of the positioning member 20 is allowed, and it is possible to prevent an unnecessary load from being applied to the drive mechanism. The normal operation of the positioning member 20 is started after the solenoid 16 is operated and the roller 14 is separated from the leaf spring 22, as in the above-described embodiment.

[0018]

[Effect of the Invention] The device of the present invention is a driven machine connected to a drive source.
The moving body is positioned integrally with the drive source.
The engaging member roller is engaged with the concave engaging portion of the member.
The driven body can be stopped at a predetermined position.
A protection device for a drive mechanism, wherein the recessed engagement portion includes:
When the driven body is positioned and stopped,
When a force exceeding a predetermined value acts on the driven body, the locking portion
Since the elastic member that bends to release the engagement state of the roller of the member is provided, the elastic member is bent while the roller rotates.
And therefore the roller can be easily
That miss the overload applied to the drive shafts or the like drive away effectively
Wear. For this reason, there is an inconvenience that the drive mechanism is damaged.
Effectively be able to prevent.

[Brief description of the drawings]

FIG. 1 is a plan view showing a schematic configuration of an embodiment of the present invention;

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a plan view showing a schematic configuration when a door closes a passage.

FIG. 4 is a plan view showing a schematic configuration of another embodiment device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door (driven body) 3 Drive mechanism 10, 20 Positioning member 12, 22 Leaf spring (engaging part) 13 Locking member

Claims (1)

(57) [Scope of request for utility model registration] 1. A driven member connected to a driving source is provided with a concave member of a positioning member provided integrally with the driving source .
And engaged with the roller of the locking member in the engaged portion, a protection device for a drive mechanism that can stop the driven member at a predetermined position, the engagement portion of the upper Symbol recessed, upper Symbol when the driven member is stopped is positioned, and this provided a resilient material that bends so as to release the engagement of the rollers of the locking member when a predetermined or more force is applied to the driven member A protection device for a driving mechanism, characterized in that: