JPS626072Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an operating lever that is installed in an operating device for remotely controlling a mobile device.

For example, as a remote control means for overhead traveling cranes used to transport heavy objects in factories, a portable operating device is used to issue operational commands wirelessly from the ground. The signal characteristics of the signal generation circuit built into the operation box are set in accordance with the amount of tilting operation of the operation lever of the upright operation lever. By pushing up the button, a set electrical signal is sent out from the operation box.

By the way, in the structure of the conventional operation lever, the above-mentioned push button protrudes from the head of the operation lever in an exposed state, so the operator's arm or abdomen may accidentally hit the push button and cause the push button to There was a problem in which when the crane was pressed down, the crane could be activated by mistake, posing a danger to heavy objects.

The present invention has been made to solve the above-mentioned problems; that is, the object of the present invention is to provide an operating rod which prevents the push button from being pressed down if the operator accidentally hits the head of the lever.

As a means to achieve this purpose, the operating lever of the present invention has a cup shape with an open upper end on the head of the operating lever, and two recessed notches on the periphery of the opening that are opposite to each other on the same diameter of the cup. The present invention is characterized in that it includes a guard ring with a molded insert, and that the guard ring surrounds the peripheral wall of the push button and is rotatably attached to the head of the operating lever.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

As shown in FIG. 1, the operating rod 1 of the embodiment is installed at two locations on the left and right on the top surface of a portable operating box 2 for remotely controlling a mobile machine such as a crane. The operation box 2 has a built-in circuit member for transmitting necessary electrical signals and radio waves, and the operation box 2 is adapted to be hung and carried by the operator using a hanging band 3.

As shown in FIGS. 1 to 3, each operating rod 1 has a swing shaft 4 forming a base, and a swing shaft 4 forming a base thereof.
A hollow operating lever 5 connected to the upper part of the operating lever 5, and an operating switch 6 installed inside the operating lever 5.
, a push button 7 attached to the top of the operating lever 5, and a guard ring 8.

Specifically, first, the swing shaft 4 has a spherical portion 4a formed near its lower part supported by a spherical bearing 10 of an inclination angle detection mechanism 9 fixed to the inner wall of the operation box 2, so that the swing shaft 4 can be rotated forward and backward. It is supported so as to be swingable around two axes in the direction FB and the left-right direction RL.

Next, a holding cylinder 5a is formed to protrude from the center of the top surface of the operating lever 5, and a round plug-shaped push button 7 is formed in the inner hole of the holding cylinder 5a so as to project downward. A provided button shaft 7a is fitted into the holding cylinder 5a so as to be able to swing vertically.
A boss 8a formed upright at the center of the bottom of a cup-shaped guard ring 8 with an open upper end is rotatably fitted onto the outside and is prevented from coming off by a snap ring 11.

A recessed notch 8b having a width that allows a fingertip to be inserted easily is formed in two opposing locations on the circumferential edge of the guard ring 8 on the same diameter, and the guard ring 8 is attached to the holding cylinder 5a. In this state, it is freely rotatable on the top surface of the operating lever 5 with moderately light friction, and furthermore, the height of the upper end of the guard ring 8 is at the same height as the upper surface of the push button 7.

The lower end of the button shaft 7a of the push button 7 abuts against a spring receiver 13 which is fixed to the upper end of the operating arm 12 of the operating switch 6 and is biased to protrude.

In addition, a boot 14 provides a waterproof seal between the hem edge of the operating lever 5 and the top surface of the operating box 2.

Next, the operating lever 1 of the embodiment configured as described above will be described.
This section describes the operation and operation of the .

The operator of the mobile device grasps the operating lever 5 and tilts it in the swinging direction that provides the required longitudinal and horizontal inclination angles, and after confirming that the mobile device is in a safe condition, tilts it with an appropriate fingertip. Notch 8 of guard ring 8
b and press pushbutton 7.

Based on such operations, a signal characteristic quantity corresponding to the inclination angle of the operating rod 1 is set in the signal generation circuit in the operation box 2, and when the depression of the push button 7 is detected by the switch 6. , the electric signal is sent from the operation box 2, whereby the mobile device performs a movement operation in accordance with the operation signal.

However, if the operator accidentally touches a part of his or her body to the head of the operating lever 5, the guard ring 8
The operation signal is not output from the operation box 2 because it does not directly hit the pushbutton 8 because it is blocked by the operation box 2. In addition,
The direction of the notch 8b of the guard ring 8 can be changed to a desired angle by rotating the guard ring 8 according to the operator's preference.

As described above, according to the operating lever of the present invention, the cup-shaped guard ring, which has a recessed notch into which the fingertip can be inserted, is attached to the upper end of the operating lever while surrounding the peripheral wall of the push button. Because of the attached structure, the operating lever can be operated easily as before, and it also prevents accidental operation of the push button, which has the effect of increasing the safety of the operating lever.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an operating lever showing an embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a sectional view of FIG. 2. 1... Operating rod, 2... Operating box, 5... Operating lever, 5a... Top holding cylinder, 6... Operating switch, 7... Push button, 8... Guard ring, 8b
...Concave cut.

Claims (1)

[Scope of utility model registration request] In an operation lever in which a push button for an operation switch is attached to the head of an operation lever that is tiltably and swingably installed on the top surface of the operation box, the head of the operation lever has a cup shape with an open upper end. , and a guard ring in which two opposing recessed notches on the same diameter of the cup are formed on the opening periphery of the cup, and the guard ring surrounds the peripheral wall of the push button and also controls the operation lever. An operating rod characterized by being rotatably attached to the head of the