JPH066377U - Operation grip for small cranes, etc. - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an operation grip of a load handling device having an operation handle which is easy to grasp and easy to operate. A rod-shaped body having a tip end fixed to an inner surface of a housing and a rear end side projecting to the outside of the side surface of the housing, and having a tapered taper shape toward the tip side, While being flexibly attached to the housing, a grip member having a short rod shape in a direction substantially orthogonal to the rod-shaped body is provided at the rear end of the rod-shaped body, while a strain gauge is provided on the flexible side of the rod-shaped body. By gripping the grip member by hand and bending the rod-shaped body integrated with the grip member upward or downward,
An electric signal is generated in the strain gauge, and this signal is used as an elevating signal of a load handling device such as a crane to construct an operating grip.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an operation grip suitable for being applied to an operation unit that causes various load handling devices such as small cranes and manipulators to move up and down.

[0002]

[Prior art]

 Load handling devices such as small cranes are used in various fields because they are extremely labor-saving in handling various heavy objects (hereinafter referred to as loads) of, for example, about 5 kg to 100 kg.

In the load handling device as described above, the load is supported by a load supporting part such as a grip or a hook, and an operating part such as an operating grip provided near the load supporting part is operated to The load support is moved up and down, or forward and backward. As shown in FIG. 4, the operating portion is formed by providing a housing B on the upper portion of the load supporting portion W, and by providing the housing B with an operating rod-shaped operating handle H protruding outward from the side surface thereof.

However, since the operation handle H is simply a rod-like member that protrudes straight from the side surface of the housing B, there is a problem that it is difficult to grasp or it is difficult to grasp and operate. In particular, it is difficult to say that the handle H has a suitable shape in order to push or pull the handle H in each direction to perform two or more types of movements.

[0005]

[Problems to be solved by the device]

 Therefore, the problem to be solved by the present invention is to provide an operation grip of a load handling device having an operation handle which is easy to grasp and easy to operate.

[0006]

Means for Solving the Problems The structure of the present invention made for the purpose of solving the above-mentioned problems is a rod shape in which the tip is fixed to the inner side surface of the housing and the rear end side is projected to the outside of the side surface of the housing. A rod-shaped body, which is a body and has a taper shape toward the tip side, is flexibly attached to the housing, and at the rear end of the rod-shaped body, a short length in a direction substantially orthogonal to the rod-shaped body is provided. A rod-shaped gripping member is provided, while a strain gauge is provided on the bending side of the rod-shaped body. The gripping member is grasped by hand, and the rod-shaped body integrated with the grip member is moved upward or downward. It is characterized in that an electric signal is generated in the strain gage by bending and the signal is used as a lifting signal of a load handling device such as a crane.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an example of the operating grip of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a plan view of a main part of an example of the operating state of the operating grip, and FIG. It is a perspective view of an example.

1 to 3, reference numeral 1 denotes a space between a hook or a grip (not shown) provided on the lower end side of a vertical arm VA such as a small crane and the arm VA. The housing-shaped operation boxes 1a and 1b provided are side walls located on the left and right when the operation box 1 is viewed from the front.

A mounting seat 3 for a rod-shaped operating lever 2 described later is provided substantially at the center of the inner surface of the side wall 1a. A hole 4 having an inner diameter D sufficiently larger than the outer diameter d of the lever-2 is formed coaxially with the mounting seat 3 in the other side wall 1b so that the operation lever-2 can easily pass therethrough.

The operation lever-2 is formed of a rod-shaped body in the shape of a tapered tape whose tip is fixedly supported by the mounting seat 3 through the hole 4. At the rear end of the operation lever-2 by this taper-shaped body, a grip member 5 to be grasped by the operator's hand h at the time of operation is oriented in a direction orthogonal to the axis of the lever-2, and is substantially horizontal here. It is installed in a posture.

Then, the operation lever-2 to which the grip member 5 is attached grasps the grip member 5 with the hand h as shown in FIG. 3 and lifts or lowers the grip member 5 as it is. To operate. When this operation is performed, the operation lever-2 is bent in the lifting direction or the pushing down direction because it is in the shape of the large taper.

In the present invention, the bending phenomenon that occurs in the operation lever-2 when the operation grip 5 is grasped and lifted or pushed down is raised or lowered with respect to the load load portion of the load handling device such as a small crane. In order to form the command signal for the operation lever-2, strain gauges 6 and 7 are attached to the upper and lower side surfaces where the deflection of the operation lever-2 occurs, and the above-mentioned upward or downward deflection phenomenon is converted by an electric signal. I took it out. 6a and 7a are signal lines for extracting the output signal of the distortion gauge.

On the other hand, in the operation grip of the present invention, in the above-mentioned grip member 5, the side on which the thumb of the gripping hand is located is formed in the large diameter portion 5b via the taper portion 5a. As shown in FIG. 1 or 3, this is operated by the belly of the thumb on the end surface of the large diameter portion 5b, for example, a switch 8 such as a power on / off switch or an operation button 9. This is for the purpose of providing them and making them easy to operate, and for exhibiting a fit feeling when the grip member 5 is grasped by hand.

Since the operation grip of the present invention formed as described above is attached to the operation lever so as to be almost horizontal or slightly downward to the right, the operator naturally holds it when grasping it with the right hand. It is extremely easy to grab when you raise your right hand on the body and you can grab it without twisting your wrist.

Moreover, a small force that displaces upward or downward due to the feeling of lifting the grip member upward or pressing it down with the posture of the right hand of the natural body grasped. The operation lever bends and the bending is immediately sensed by an electric signal generated in the strain gage, and the signal generates a command for raising or lowering the arm, for example, of the arm. Anyone can operate the grip immediately without requiring special habituation or training.

In the above example, the bending of the operating lever in the upper and lower directions is detected by the strain sensor provided on the bending side, and this is used as the lifting command signal of the load handling device such as the crane. In the present invention, the deflection in the front and rear directions of the lever is detected by providing a strain sensor on the deflection side separately from the above, and this is detected by a forward / backward movement command such as a crane. It may be used as a signal.

[0017]

[Effect of device]

 Therefore, the operation grip of the present invention is very useful in practice because it can be operated only by feeling the movement of the human hand in a natural posture, such as raising and lowering, to indicate the movement direction of the load handling device. is there.

[Brief description of drawings]

FIG. 1 is a perspective view of an example of an operating grip of the present invention.

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

FIG. 3 is a plan view of a main part of an example of a usage state of the operation grip.

FIG. 4 is a perspective view of a conventional example.

[Explanation of symbols]

 1 Housing 2 Operation Lever 3 Mounting Seat 4 Hole 5 Grip Member 6,7 Strain Gage

Claims (4)

[Scope of utility model registration request] 1. A rod-shaped body having a tip fixed to an inner side surface of a housing and a rear end side protruding outside a side surface of the housing, the bar-shaped body having a taper shape toward the tip side. , Is attached to the housing flexibly, and at the rear end of the rod-shaped body,
While a grip member having a shape of a short rod oriented substantially orthogonal to the rod-shaped body is provided, a strain gauge is provided on the bending side of the rod-shaped body, and the grip member is grasped by hand and integrated with the grip material. By bending the rod-like body upward or downward, an electric signal is generated in the strain gauge, and this signal is used as a lifting signal of a load handling device such as a crane. An operation grip for small cranes, etc. 2. The strain gage is mounted on the upper surface, the lower surface or the front and rear surfaces of the rod-shaped body when viewed from the plane, and detects the deflection of the rod-shaped body in the upper and lower directions or the deflection in the front-back direction. An operating grip for a small crane or the like according to claim 1. 3. The small sized crane or the like according to claim 1 or 2, wherein the grip member is formed such that its front end or rear end side has a diameter larger than that of the other portion, and has a shape conforming to the palm of the hand holding the member. Operation grip. 4. The operation grip for a small crane or the like according to claim 3, wherein the grip member is provided with an operation knob or an operation button on the end surface on the large diameter side.