JPH0235151Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an operation switch that can quickly operate a device in an emergency.

For example, in a winding device that winds electric wire W onto a drum D, a worker constantly monitors the winding state of the electric wire W or performs work in the vicinity. Accidents such as being caught in the electric wire W and the drum D, or being caught between the electric wire W and the drum D may occur. In an emergency situation where such an accident occurs, the take-up device must be stopped immediately, but conventional emergency stop switches have not been used.
SW1 is a push-button type switch that is installed in the operation box, and the push-button switch SW1 will not operate unless force is applied from a certain direction. The switch must be kept away from all areas of the work site, which are confined to a small area and, therefore, where an accident could occur.
It becomes difficult to operate SW1. In such accidents, it is possible to prevent the development of fatal accidents by having the worker who becomes the victim immediately stop the operation of the equipment himself/herself, and this invention responds to such a request. The purpose of this invention is to provide an operating switch that can be operated by a casual worker.

Hereinafter, one embodiment of the present invention will be described. Reference numeral 10 is an operating switch of the present invention, and 1 is a rod member having a lever portion 11 made of a long, lightweight aluminum pipe or the like at its front portion. The rod member 1 is pivotally supported by a support shaft 55 provided on the cylindrical inner frame 3, so that the rod member 1 can swing in the horizontal direction as shown in FIG.

Furthermore, the inner frame 3 is pivotally supported by support shafts 6, 6 provided in the horizontal direction inside the concentric cylindrical outer frame 4, so that the inner frame 3 can swing in the vertical direction. .

Therefore, by supporting the support shafts 5, 5, the inner frame 3, and the support shafts 6, 6, the rod member 1 can swing around the center supports of the inner frame 3 and the outer frame 4, which are arranged concentrically. It's summery.

A contact member 2 is provided behind the axis of the rod member 1, and a biasing force is applied to the contact member 2 by compression of the coil spring 7 so that the contact member 2 can move in the axial direction, so that the contact is made as shown in FIG. 3b. The switch SW2 is disposed at a position where the detection roller 8 is raised by the movement of the contact member 2 due to the aforementioned biasing force when the contact member 2 is disengaged, and the switch SW2 is activated by the rise of the detection roller 8. The detection roller 8 and switch SW2 constitute a limit switch. The length a from the front end surface of the rod member 1 to the support shafts 5, 5 is longer than the length b from the rear end surface of the rod member 1 to the support shafts 5, 5 (see Figure 3 a). 1 is a long lever part 1
1 attempts to swing in the vertical direction due to its own weight, but this swinging is prevented by the biasing force of the coil spring 7 against the rear end surface of the rod member 1, which causes the rear end surface of the rod member 1 to come into contact with the front end surface of the contact member 2. This is prevented by generating frictional force on the contact surfaces, and the rod member 1 and the contact member 2 are arranged on a straight line l.

In this state, if force is applied to the lever part 11 of the rod member 1 and the rod member 1 is swung, the contact between the rear end surface of the rod member 1 and the front end surface of the abutment member 2 will be released, and the compression will occur. The coil spring 7, which had been in contact with the rod member 1, expands, and the contact member 2 moves toward the rod member 1, as if jumping out. (not shown), which activates switch SW2.

Further, a rear end surface of the rod member 1 serving as the abutting surface;
The front end surface of the contact member 2 is provided with tapered portions T1 and T2 at the rear of the rod member 1 and the front portion of the contact member 2 in order to reduce the contact area, so that the front end surface of the contact member 2 is provided with tapered portions T1 and T2 at the rear of the rod member 1 and the front portion of the contact member 2. , the abutment is released.

Adjustment of the response operation of the switch SW2 according to the degree of swing of the rod member 1 is performed by appropriately changing the ratio of the lengths a and b of the rod member 1.

As described above, the operating switch 10 of the present invention can quickly operate the switch SW2 by applying force from all directions to all parts of the lever part 11 and slightly rocking the rod member 1. Therefore, if the operation switch 10 of the present invention is used for an emergency stop of the wire winding device as shown in FIG. In the event of an emergency, the victim worker applies force to the lever part 11 to swing the rod member 1, activates the switch SW2, and removes the wire. It becomes possible to stop the winding device immediately.

As described above, the present invention is an operation switch with great practical value that can prevent fatal accidents due to delay in stopping, and can be applied not only to the above-mentioned example of use but also to other devices.

[Brief explanation of the drawing]

FIG. 1 is a perspective view illustrating an example of the use of a conventional operation switch. FIG. 2 is a perspective view illustrating the operating switch of the present invention. FIGS. 3a and 3b are side views illustrating the operation of the operating switch of the present invention. FIG. 4 is a perspective view illustrating an example of the use of the operating switch of the present invention. 1... Rod member, 2... Contact member, 10... Operation switch, 11... Lever portion, SW2... Switch.

Claims (1)

[Scope of utility model registration request] It is pivotally supported on a fulcrum and one side is a lever part,
A rod member, the other of which is a part that comes into contact with another member, an abutment member that is in front of the part that comes into contact and comes into contact with the part with an elastic biasing force, and a contact member that comes into contact with the said part. and a limit switch located on the movement trajectory. Under normal conditions, the rod member and the abutting member are in a straight line while being pressed against each other by the biasing force applied to the abutting member. , and the limit switch is in contact with the abutting member. On the other hand, when an external force is applied to the lever portion from the side, the rod member swings and the linear relationship with the abutting member is changed. An operating switch characterized in that when the limit switch collapses, the abutting member projects toward the lever portion due to an elastic biasing force, and the limit switch is released from the abutting state with the abutting member.