JPH07234738A - Manufacture of grip incorporating switch - Google Patents

Abstract

PURPOSE:To manufacture a grip incorporating plural switches which are waterproof and dustproof by inserting a main body where the switches are assembled into a cover after the cover is formed. CONSTITUTION:The main body 2 and the cover 5 of the grip are formed, and the switches 3 and 4 are assembled to switch assembly parts 24 and 25 formed in the desired places of the main body 2. Then, the main body 2 to which the switches 3 and 4 are assembled is inserted into the cover 5. Since the main body 2 to which the switches 3 and 4 are previously assembled is inserted into the cover 5 after the main body 2 and the cover 5 are separately formed, the places where the switches 3 and 4 are assembled are not restricted. Namely, the switches 3 and 4 can be arranged at any places of the outer peripheral surface of the main body 2. Furthermore, the main body 2 and the switches 3 and 4 are covered by the cover 5 and therefore entering of water and dust are prevented by the cover 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grip for an operating lever for operating a construction machine or the like, and a method for manufacturing a grip provided with a switch.

[0002]

Construction machines such as hydraulic excavators, bulldozers or truck cranes are generally operated by operating levers. A grip 50 as shown in FIG. 4 is used as a grip of this type of operation lever. The grip 50 is used, for example, in a shift lever of an automobile, and the outer periphery of the main body 2 of the grip 50 is covered with a cover 5 formed by injection molding a material such as rubber. As described above, the manufacturing method of covering the outer periphery of the grip 50 with the cover 5 is widely used because it has a feature that the grip feeling of the grip 50 can be improved.

For construction machines, etc.,
When a danger is predicted or a danger is detected, it is necessary to immediately emit a horn, and there has always been a demand for an operating environment in which a switch for emitting a horn is always at hand. FIG. 5 shows a grip 60 developed in response to such a request. A main body 62 of the grip 60 includes a core body 64 having a cylindrical hollow portion and a shaft body 66 fitted and inserted into the hollow portion. The shaft body 64 and the shaft body 64 are provided in the hollow portion of the core body 62. A core having a shape in which a switch 68 assembled to the body 64 is fitted is inserted and the cover 5 is covered, and then the core 64 to which the switch 68 is assembled is attached to the core.
And replace the core body 62 and the shaft body 64 with screws (not shown).
The grip 60 is formed by fixing the grip 60.

By adopting such a structure and manufacturing method, the switch can be assembled to the grip 60. Therefore, by mounting the switch 68 which emits a horn, the switch 68 can be arranged at hand, and the horn can be immediately mounted. Can be emitted. Further, since it is excellent in waterproofness and dustproofness, the switch 68 is protected surely, and the reliable switch operation can be maintained for a long period of time. In addition, the grip 5 without switch
There is an advantage that the manufacturing apparatus used for manufacturing 0 can be used with almost no improvement.

[0005]

By the way, today, due to the breakthrough of electronic control technology, various operations are realized by using electronic control. For example,
When controlling the crane arm to always move at the same speed even if the load fluctuates, the operator should store the speed value in the controller memory when the crane arm is operating at the desired speed. Submit to update the settings with new values. When the setting value is easily updated by simply pressing the switch, it is desirable that the switch is located at hand. That is, in the case of a construction machine or the like, if the switch can be attached to the grip of the operation lever, various operations can be performed quickly at hand.

However, in the conventional grip 66 shown in FIG. 5, the shape of the shaft body 64 to which the switch 68 is assembled is limited to a simple rod shape or a shape that becomes narrower toward the top side. The place where you can do is limited to the top of the grip. Further, since the shaft body 64 must be smaller than the diameter of the opening 70 on the grip base end surface, the size of the switch to be assembled is also limited. Therefore, substantially only one switch can be assembled.

An object of the present invention, which has been made in view of the above problems, is to provide a method of manufacturing a grip incorporating a plurality of waterproof and dustproof switches.

[0008]

A method of manufacturing a grip having a built-in switch according to the present invention which achieves the above object has a grip whose tip has a larger diameter than a base connected to an operating lever. A step of molding the main body of, and a step of molding a cover for accommodating the main body to protect it from dust and water,
The method is characterized by including a step of assembling a built-in component such as a switch in the main body, and a step of inserting the main body in which the switch is assembled into the cover.

[0009]

After the cover is formed, the switch and all the parts to be inserted into the cover are assembled to the main body. Then, the main body in which the parts are assembled is fitted into the cover. In this way, when the switch is assembled at a desired position of the main body before the main body is fitted into the cover, the position where the switch can be assembled is the entire outer periphery of the main body. Also, the switch is waterproof and dustproof by the cover.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. The same parts as those already described are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 1 is a side view showing a grip of the present invention, and FIG. 2 is a plan view, a side view and a rear view showing a grip body of the present invention. As shown in FIG. 1, the grip 1
Is composed of a grip body 2, switches 3 and 4 assembled to the body 2, and a cover 5 for covering the body 2.

As shown in FIG. 2, the grip body 2 has a larger diameter on the tip side (tip portion) than on the end face 12 side (base portion).
Is a fitting hole 1 into which the operation lever L is inserted in its end face 12.
4 and is attached to the tip end portion of the operation lever L by screwing a screw portion formed inside the hole 14. Then, as shown in FIG. 2 (B), the peripheral side portion of the main body 2 has stair-shaped uneven surfaces 16, 17, 18, 19.
Are formed.

The cover 5 shown in FIG. 1 is made of a flexible material having flexibility such as rubber or synthetic leather, and waterproofs and dust-proofs the main body 2 and the switch fitted therein. Moreover, the switches 3 and 4 are provided on the outer surface thereof.
Marks 32 and 33 for indicating the position of are attached.

As shown in FIG. 3, the inner surface of the cover 5 has step-shaped surfaces 22 and 23 (partly not shown) corresponding to the outer shape of the main body 2. When the main body 2 is inserted into the cover 5 in a state corresponding to the staircase-shaped surfaces 16, 17, 18, and 19, the cover 5 rotates about the axis A with respect to the main body 2 regardless of the shape of the main body 2. It is prevented from rotating. Also, the step 2 formed on the main body 2
With 0, the longitudinal displacement between the cover 5 and the main body 2 is prevented. Therefore, the sign 3 attached to the outer surface of the cover 5
Pressing positions 2 and 33 allows the switch to be operated quickly without error.

Further, the thickness of the cover 5 is thin on the inner surface side of the positions where the marks 32 and 33 are attached, and the marks 32 and 3 are provided.
When the position 3 is pushed, only the portions of the markers 32 and 33 are deformed and the switch is pushed. Therefore, for example, pressing one of the two adjacent switches does not deform the cover and press the other switch.

Further, on the inner surface side of the markers 32, 33, protrusions 32a, 33 extending in a rod shape along the inner surface of the cover 5.
a is formed. Since the protruding portions 32a and 33a are formed on the cover 5 so as to intersect with the switch pieces (not shown) of the rod-shaped switches 32 and 33,
Main body 2 and cover 5 or cover 5 and switches 32 and 3
Even if 3 is assembled in a displaced state, the protrusion 3
The switch can be surely pushed within the range in which 2a, 33a and the switch piece intersect.

Since the inner surface of the cover 5 is formed so as to correspond to the shape of the main body 2, the cover 5 has various shapes depending on the shape of the main body 2.

Next, a procedure for manufacturing the grip having the above structure by the grip manufacturing method according to the present invention will be described. First, mold the main body 2 of the grip and the cover 5,
Then, the switches 3 and 4 are assembled to the switch assembling parts 24 and 25 formed at desired positions of the main body 2. On this occasion,
At the same time, assemble the built-in parts. After that, the main body 2 to which the switches 3 and 4 are attached is fitted into the cover 5.

As described above, in the grip manufacturing method according to the present invention, after the main body 2 and the cover 5 are separately formed, the main body 2 in which the switches 3 and 4 are assembled in advance is inserted into the cover 5. Therefore, the positions where the switches 3 and 4 are assembled are not restricted. That is, the switches 3, 4 can be placed anywhere on the outer peripheral surface of the main body 2.
Can be arranged. Further, the main body 2 and the switches 3 and 4 are covered with the cover 5, so that the cover 5 is waterproof and dustproof.

At this time, the step-shaped surfaces 16, 17, 18, 19 formed on the main body 2 and the step-shaped surfaces 22, 23 formed on the inner surface of the cover 5 face each other. When the main body 2 is inserted into the cover 5, the main body 2 is
There is no relative displacement between the cover 5 and the cover 5. That is, since the cover 5 and the switches 3 and 4 do not shift from each other, the switches 3 and 4 can be pressed without error by pressing the markers 32 and 33 attached to the cover 5.

Further, when the manufacturing method in which the entire body 2 and the built-in parts such as the switches 3 and 4 are fitted and inserted after the cover 5 is molded, the switches 3 and 4 can be arranged at any position of the body 2. As a result, the switch can be installed at the optimum position for the operator. Moreover, a large number of switches can be attached to one grip.

[0022]

As described above, according to the present invention, after molding the cover, the main body having the switch assembled therein is inserted into the cover, so that the switch can be arranged at any position of the main body. In addition, a large number of switches can be attached to one grip. Moreover, since the switch covers the switch, it is waterproof and dustproof.

[Brief description of drawings]

FIG. 1 is a side view showing a grip of the present invention.

2A is a plan view showing a grip body of the present invention, FIG. 2B is a side view, and FIG. 2C is a rear view.

FIG. 3 is a side view having a breakage portion showing a cover.

FIG. 4 is a side view showing a conventional grip.

FIG. 5 is a side view showing another conventional grip.

[Explanation of symbols]

1 ... Grip, 2 ... Main body, 3, 4 ... Switch, 5 ... Cover, L ... Operating lever.

Claims (1)

[Claims] 1. A step of molding a main body of a grip having a larger diameter at a tip portion than a base portion connected to an operating lever, and a step of molding a cover for accommodating the main body to prevent dust and water. A method for manufacturing a grip with a built-in switch, comprising: a step of assembling a built-in component such as a switch into the main body; and a step of inserting the main body in which the switch is assembled into the cover.