JPH0514170U - Penjuram arm fall prevention device - Google Patents

Abstract

(57) [Summary] [Purpose] To make it possible to lock the pendulum arm in the open state, and also to enable the lock to be released easily. [Structure] A lock lever 5 rotatably supported near an opening / closing shaft 3 of a pendulum arm 1 and having a hook 5a at its tip, and a hook 5a of the lock lever 5 provided on a spinning device body 2 when the pendulum arm 1 is opened. And a release lever that is provided on the pendulum arm 1 and that rotates the lock lever 5 to release the engagement between the lock lever 5 and the pin 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention supports each top roller that constitutes the draft device of the spinning device, and when the pendulum arm that is opened and closed with respect to each bottom roller of the spinning device main body is pulled up, it drops from that position and closes. It is about the device to prevent this.

[0002]

[Prior Art]

 Conventionally, the maintenance of the upward pulling state of the pendulum arm depends only on the force of the torsion spring provided between the pendulum arm and the spinning device body at the opening / closing axis of the pendulum arm.

[0003]

[Problems to be solved by the device]

 The force of the torsion spring is not so great that when the pendulum arm is opened for work, the pendulum arm may fall and close, hitting the operator's head or pinching his hands. It was

An object of the present invention is to provide a pendulum arm fall prevention device which can maintain the open state of the pendulum arm and easily release the state.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a pendulum arm fall prevention device of the present invention comprises a lock lever having a hook at a tip end rotatably supported near an opening / closing axis of a pendulum arm, and a pendulum arm provided on a spinning device body. It consists of a pin that engages with the hook of the lock lever when opened, and a release lever that is provided on the pendulum arm and that rotates the lock lever to release the engagement between the lock lever and the pin.

[0006]

[Work]

 In the pendulum arm fall prevention device configured as described above, when the pendulum arm is opened, the lock lever moves to the pin side, and after the front end of the hook has passed over the pin, it is returned slightly and the hook engages with the pin. It is locked together. Then, lift the pendulum arm a little to lift the hook of the lock lever from the pin, and then operate the release lever, the lock lever rotates and disengages from the pin, and the lock is released.

[0007]

【Example】

 The pendulum arm fall prevention device of the present invention will be described with reference to FIG.

This pendulum arm fall prevention device includes a latch lever 4, a lock lever 5, a release lever 6 and a spinning device body provided on a pendulum arm 1 rotatably supported by a spinning device body 2 by an opening / closing shaft 3. It is composed of a latch pin 7 and a lock pin 8 which are provided in 2.

In the closed state, the pendulum arm 1 stands up to about 75 °, which is the same as the arrangement angle of the draft device, and the upper end of the pendulum arm 1 is supported by the spinning device body 2 by the opening / closing shaft 3. A torsion spring 17 that engages with the pendulum arm 1 and the spinning device body 2 is provided around the opening / closing shaft 3. On the lower surface of the pendulum arm 1, two top rollers 9, 10, 11, 12 and 13 of the respective rollers forming the draft device are supported so that the nip pressure can be adjusted. These are covered by covers (not shown) provided on the left and right of the pendulum arm 1. The spinning device main body 2 facing these top rollers is provided with corresponding bottom rollers.

The latch lever 4 is rotatably supported by a shaft 14 provided near the lower end of the pendulum arm 1, and a hook 4 a that is engaged with the latch pin 7 when the pendulum arm 1 is closed. have. Since the latching lever 4 is heavier on the side of the operating portion 4b than on the side of the hook 4a, the state is maintained after engaging with the latching pin 7. When opening the pendulum arm 1, the latch lever 4 may be manually tilted backward.

The lock lever 5 is for maintaining the state when the pendulum arm 1 is lifted and opened, and is rotatably supported by a shaft 15 provided near the upper end of the pendulum arm 1. There is. The tip of the lock lever 5 has a hook 5a that engages with the lock pin 8 when the pendulum arm 1 is lifted and opened, and engages with the hole 6a of the release lever 6 at the base end. It has a convex portion 5b. The lock lever 5 is always urged clockwise because the hook 5a side is heavier than the convex portion 5b side, and the convex portion 5b is always in contact with the upper end of the hole 6a.

The release lever 6 is slidable in the longitudinal direction on the back surface of the pendulum arm 1 by means of a long hole formed in the release lever 6 and a pin (both not shown) on the side of the pendulum arm 1 that engages with it. The hole 6a is formed near the upper end, and the manual operation portion 6b is formed at the lower end. It is desirable that the operating portion 6b is provided at a position apart from the operating lever 6 such that the operating portion 6b cannot be operated with one hand together with the latch lever 4, and it is safer. Further, the release lever 6 is urged upward by a spring 18 provided between the release lever 6 and the pendulum arm 1.

The tip of the hook 5 a, when engaged with the lock pin 8, protrudes inward from the arc passing through the apex of the lock pin 8 about the shaft 15, and therefore the release lever 6 is simply operated. However, the hook 5a does not come off from the lock pin 8.

The following operation is required to open the pendulum arm 1 configured in this way upward and lock it at that position. That is, the latch lever 4 is manually tilted backward to remove it from the latch pin 7, and the latch lever 4 is pulled up as it is. Along with that, the lock lever 5 moves as shown by the dotted line, and after the front end of the hook 5a has passed over the lock pin 8, the hook 5a is engaged with the lock pin 8 when the latch lever 4 is slightly lifted. The lock is completed.

In order to release this locked state, the following operation is required. That is, the latch lever 4 is slightly lifted to lift the hook 5a of the lock lever 5 from the lock pin 8, and then the other hand is used to pull down the operation portion 6b of the release lever 6 to move the lock lever 5 around the shaft 15. Rotate counterclockwise. As a result, the lock lever 5 is disengaged from the lock pin 8, and the pendulum arm 1 can be closed by holding the latch lever 4 as it is. After the pendulum arm 1 is completely closed, when the latch lever 4 is pulled forward, its hook 4a engages with the latch pin 7.

[0016]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

That is, since the lock operates at the same time when the pendulum arm is fully opened and its posture is maintained unless the release lever is operated, the pendulum arm does not close during work, which is very safe.

[Brief description of drawings]

FIG. 1 is a side view of a pendulum arm fall prevention device of the present invention.

[Explanation of symbols]

 1 Pendulum arm 2 Spinning machine body 3 Opening / closing shaft 5 Lock lever 5a Hook 6 Release lever 8 Lock pin

Claims (1)

[Scope of utility model registration request] 1. A lock lever rotatably supported near an opening / closing shaft of a pendulum arm and having a hook at its tip, and a pin provided on the spinning device body and engaged with the hook of the lock lever when the pendulum arm is opened. A pendulum arm fall prevention device consisting of a release lever provided on the pendulum arm that rotates the lock lever to release the engagement between the lock lever and the pin.