JPH077041U - Trigger switch device - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose of this device is that the operability is good for both right-handed and left-handed users, and when applied to a power tool, it improves the handling safety of the power tool. It is an object of the present invention to provide a trigger switch device which has a simple structure and is easy to manufacture. [Structure] The operator 22 is provided on one side of the switch body 21.
Is provided so that it can enter and leave freely. One end of the lock member 23 that locks the push-in state of the operator 22 is rotatably supported inside the switch body 21, and the other end is the operator 22.
Is inserted through the through hole 22b provided in the. Since the tip of the lock member 23 projects substantially to the center on the tip side of the operating element 22, either the right hand or the left hand can be operated with one hand.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a trigger switch device used for, for example, an electric tool.

[0002]

[Prior art]

 6A and 6B show an example of a conventional trigger switch device. A switch mechanism (not shown) is built in the switch body 11. An operator 12 is provided on one side surface of the switch body 11 so as to be able to move in and out, and the switch mechanism can be switched according to the operation of the operator 12. On the side surface of the switch body 11 adjacent to the side surface on which the operating element 12 is provided, a lock member 13 for holding the pressed state of the operating element 12 is provided.

In the trigger switch device having the above structure, as shown in FIG. 2A, when the operator 12 is projected from the switch main body 11, the switch mechanism is in an off state, and FIG. As shown in, the switch mechanism is turned on when the operator 12 is pushed into the switch body 11 side. When the lock member 13 is pushed in in this state, the lock member 13 and the operating element 12 engage with each other, and the pushed state of the operating element 12 is maintained. In this state, for example, when the operator 12 is slightly pushed in, the engagement state between the lock member 13 and the operator 12 is released, and the lock member 13 is returned to the position shown by the broken line by the urging force of the spring (not shown). In this state, when the pressing force of the operating element 12 is released, the operating element 12 is returned to the position shown in (a) of the figure by the urging force of a spring (not shown).

[0004]

[Problems to be solved by the device]

 By the way, the above-mentioned conventional trigger switch device is designed for right-handed users. That is, the operator 12 is operated by the index finger of the user's right hand, and the lock member 13 is operated by the thumb. Therefore, it is difficult for a left-handed user to operate the lock member 13, and there is a problem in safety when handling the power tool.

The present invention has been made to solve the above problems, and its purpose is to have good operability for both right-handed and left-handed users, and to be applied to an electric tool. In this case, it is possible to improve the handling safety of the power tool, and to provide a trigger switch device capable of reliably locking the operator.

[0006]

[Means for Solving the Problems]

 The trigger switch device of the present invention includes a switch main body in which a switch mechanism is housed, an operator provided in the switch main body so that the switch main body can move in and out of the switch main body, and one end of the operator in the switch main body. When the operation element is rotatably supported and is pushed in, the other end is projected toward the tip end side of the operation element, and the protruding other end portion is rotatably operated to provide the first portion provided in the intermediate portion. The first engaging portion includes a lock member that engages with a second engaging portion provided on the operator and locks the pushed state of the operator.

[0007]

[Action]

 That is, according to this invention, when the operator is pushed in, the other end of the lock member projects toward the tip of the operator. Therefore, while pushing the operating element with one hand with either the right hand or the left hand, the lock member is pivotally operated by the protruding other end to operate with the first engaging portion provided in the middle portion of the lock member. By engaging the second engaging portion provided on the child, the pushing state of the operator can be locked.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a switch mechanism 21a is built in the switch body 21. A shaft portion 22a of a manipulator 22 is provided on one side surface of the switch body 21 so as to be freely inserted and removed. A coil spring (not shown) is provided between the inner end of the switch body 21 of the shaft portion 22a and the inner surface of the switch body 21, and this spring causes the operator 22 to move in a direction protruding from the switch body 21. Being energized. Further, the shaft portion 12a is connected to the switch mechanism 21a so that the switch mechanism 21a can be switched according to the operation of the operating element 22.

A lock member 23 is provided on a side surface of the shaft portion 22a. One end of the lock member 23 is rotatably supported inside the switch body 21. That is, as shown in FIG. 2, a pin 24 is inserted into the switch body 21 from the side surface, and one end of the locking member 23 is rotatably supported by the pin 24. A groove 24a is provided in a part of the pin 24, and a substantially U-shaped stopper 25 for preventing the pin 24 from coming off from the switch body 21 is fitted in the groove 24a. Further, a central portion of a spring 26 is attached to the pin 24. One end of the spring 26 is locked to a locking portion 21b provided inside and inside the switch body 21, and the other end is locked to a locking portion 23a provided at an intermediate portion of the lock member 23. ing. Therefore, the lock member 23 is constantly urged downward (in the direction indicated by the arrow A in FIG. 1) by the spring 26.

The other end of the lock member 23 is inserted into the inside of a through hole 22 b provided in the operator 22. The tip of the lock member 23 is adapted to project from the through hole 22b when the operator 22 is pushed in. This projecting position is approximately the center of the operating surface of the operator 22. A first engaging portion 23a protruding in the pushing direction of the operator 22 is provided at the other end of the lock member 23 and above the rotation direction, and the operator 22 is pushed into the through hole 22b. At this time, a second engaging portion 22c capable of engaging with the first engaging portion 23a is provided. The second engaging portion 22c is projected in a direction opposite to the pushing direction of the operator 22.

The operation of the above structure will be described with reference to FIGS. 1 to 5. This trigger switch device can be operated in the same way with only one hand of the right hand or the left hand.

As shown in FIG. 1, when the operator 22 is projected from the switch body 21, the switch mechanism 21a is in the off state. In this state, when the operator 22 is pushed into the switch body 21 side with the right or left hand, for example, the middle finger, as shown in FIGS. 3 and 4, the switch mechanism 21a is turned on. At this time, the tip of the lock member 23 projects from the through hole 22b of the operator 22. In this state, for example, when the tip of the lock member 23 is rotated upward (in the direction of arrow B in the figure) with the index finger to release the pressing force of the operator 22 slightly, the first engaging portion provided on the lock member 23 is released. 23a and the second engaging portion 22c provided on the operator 22 are engaged as shown in FIG. Therefore, even when the pressing force applied to the operator 22 is released, the push-in state of the operator 22 is maintained and the ON state of the switch mechanism 21a is maintained.

In the above state, when the operator 22 is slightly pushed in, the engagement state of the first and second engaging portions 23a and 22c is released, and the lock member 23 is moved downward by the urging force of the spring 26. It is rotated to the state shown in FIG. When the pressing force of the operating element 22 is released in this state, the operating element 22 is returned to the position shown in FIG. 1 by the urging force of a spring (not shown).

According to the above-described embodiment, one end is rotatably provided on the switch main body 21 along the shaft portion 22a of the operator 22, and the other end is inserted into the through hole 22b of the operator 22. A locking member 23 is provided. When the operator 22 is pushed in, the tip of the lock member 23 projects from the through hole 22b to substantially the center of the operator 22 on the tip side, so that either the right hand or the left hand can be operated with one hand. Therefore, operability is good for both right-handed and left-handed users, and when applied to a power tool, the handling safety of the power tool can be improved.

Further, the support structure of the lock member 23 with respect to the switch body 21, the first engaging portion 23 a provided on the lock member 23, and the second engagement member provided inside the through hole 22 b of the operating element 22. The joint portion 22c has a simple structure, and moreover, the pushed state of the operator 22 can be reliably locked. Therefore, the malfunction of the switch can be surely prevented.

Although the lock member 23 is rotatable in the vertical direction in the above embodiment, the present invention is not limited to this, and the lock member 23 may be rotatable in the horizontal direction. With this configuration, the same effect as that of the above embodiment can be obtained. Of course, various modifications can be made without departing from the spirit of the invention.

[0017]

[Effect of device]

 As described in detail above, according to the present invention, operability is good for both right-handed and left-handed users, and when applied to an electric tool, the safety in handling the electric tool is improved. In addition, it is possible to provide a trigger switch device capable of reliably locking the operator.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a part of FIG.

FIG. 3 is a side view shown for explaining the operation of FIG.

FIG. 4 is a bottom view shown for explaining the operation of FIG.

5 is a side view shown to explain the operation of FIG. 1. FIG.

FIG. 6A is a side view showing a conventional trigger switch device, and FIG. 6B is a top view showing a different operation state of FIG. 6A.

[Explanation of symbols]

21 ... Switch main body, 22 ... Operator, 23 ... Lock member, 23a ... 1st engaging part, 22b ... Through hole, 22c ... 2nd engaging part.

Claims (1)

[Scope of utility model registration request] 1. A switch main body accommodating a switch mechanism, an operator provided in and out of the switch main body, and urged in a direction projecting from the switch main body, and one end thereof rotatable about the switch main body. When the operation element is pushed in, the other end is projected toward the tip end side of the operation element, and the first end provided on the intermediate part is rotated by the projected other end. Joint part
A trigger switch device, comprising: a lock member that engages with a second engaging portion provided on the operator and locks a pressed state of the operator.