JP2001054881A - Power tool with lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow to put on and off the lamp freely in the non-operating condition, and to put on the lamp until the work is over after the operation is finished, when the lighting is operated during the work. SOLUTION: The first cooperation means prohibits that a main trigger 32 is changed from the off position to the on position, when a lock-off button is at the lock position, allows that the main trigger 32 is changed from the off position to the on position when the lock-off button is at the lock-off position, and maintains the lock-off button at the lock-off position after the operation of the lock-off button is finished when the main trigger is at the on position. A lighting trigger 16 is energized to return to the off position in the non- operating condition by an operator, and it is changed to the on position operated by the operator, so as to put on the lighting device at the on position. The second cooperation means allows that the lighting trigger 16 is changed from the on position to the off position following the finish of the operation, when the lock button 2 is at the lock position, and maintains the on position of the lighting trigger even after the finish of the operation of the lighting trigger, when the lock-off button is at the lock-off position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power tool with a lighting device.

[0002]

2. Description of the Related Art There is known an electric tool in which a lighting device is added. According to this power tool, the work location can be illuminated when the work environment is dim, so that the relative positional relationship between the work and the power tool can be easily adjusted. In the case of this type of power tool, a function for turning on the lighting device is not troublesome, can be turned on when needed, and a function of preventing forgetting to turn off the light is required. 2. Description of the Related Art There is known an electric tool in which a malfunction prevention mechanism is added. Typically, a lock-off button is provided in addition to the main trigger so that the main trigger cannot be switched to the on position unless the operator operates the lock-off button to switch to the lock-off position. This prevents the operator from operating the power tool unintentionally. More specifically, this type of power tool includes a main trigger, a lock-off button, and a linking unit. The main trigger is biased so as to maintain the off position during non-operation by the operator, and is operated by the operator to change to the on position, and to operate the power tool during the on position. The lock-off button is biased so as to maintain the lock position during non-operation by the operator, and is operated by the operator to change to the lock-off position. The cooperation means prohibits the main trigger from changing from the off position to the on position while the lock-off button is in the lock position,
While the lock off button is in the lock off position, the main trigger is allowed to change from the off position to the on position,
While the main trigger is in the ON position, the lock-off button is maintained at the lock-off position even after the operation of the lock-off button is completed. By providing this malfunction prevention mechanism,
"1. The main trigger cannot be switched to the on position unless the lock off button is switched to the lock off position. 2. If the main trigger is switched to the on position,
Thereafter, even if the operator finishes operating the lock-off button, the lock-off button maintains the lock-off position. 3. When the operator ends the operation of the main trigger, the lock-off button returns to the lock position. ". There is known a technology for switching on and off the lighting device using the malfunction prevention mechanism. This power tool
The lighting device is turned on while the lock-off button is at the lock-off position, and is turned off while the lock-off button is at the lock position. This device turns on the lighting device in conjunction with the lock-off button being switched to the lock-off position prior to the work using the power tool, and in conjunction with the lock-off button returning to the lock position at the end of the work. Turn off the lighting device.

[0003]

The conventional power tool with a lighting device does not require a switch for the lighting device and is excellent in operability. However, the conventional power tool with the lighting device switches the lock-off button to the lock-off position. Lights in conjunction with.
For this reason, for example, the light is turned on even in the daytime when no lighting is required, and power is wasted. In particular, when the power tool is driven by a built-in rechargeable battery, battery power is wasted due to unnecessary illumination, and the usable time of the tool is shortened. An object of the present invention is to improve the lighting so that the lighting is performed only when the lighting is required.

[0004]

For this purpose, in the first invention of the present application, a conventional power tool with a malfunction prevention mechanism is provided.
That is, a main trigger, a lock-off button, and a linking means are provided, and the main trigger is biased to maintain the off position during non-operation by the operator, and is operated by the operator to change to the on position, The power tool is operated during the ON position, and the lock-off button is urged to maintain the lock position during non-operation by the operator. Means (this is the first
The main trigger prohibits the main trigger from changing from the off position to the on position while the lock off button is in the lock position, and the main trigger from the off position while the lock off button is in the lock off position. With the above-mentioned conventional malfunction prevention mechanism, the lock-off button is maintained at the lock-off position even after the operation of the lock-off button is completed while the main trigger is at the on position. The lighting tool and the second cooperation means are added to the power tool of (1). Here, the lighting trigger is urged to maintain the off position during non-operation by the operator, is operated by the operator, changes to the on position, and turns on the lighting device during the on position, The second cooperation means allows the lighting trigger to change from the on position to the off position with the end of the operation of the lighting trigger while the lock off button is at the locking position, and allows the lighting trigger to change from the on position to the off position. Keeps the lighting trigger in the ON position even after the operation of the lighting trigger is completed. With this configuration, "1. The lighting trigger is operated to switch on and off while the lock-off button is in the lock position, and 2. If the lock-off button is operated without operating the lighting trigger, When the light trigger is operated while the lock-off button is at the lock-off position, the light is not turned on, and the light-on state is maintained even after the operation of the light trigger is completed, and the light turns off when the lock-off button returns to the lock position. The operation is obtained, wasteful power consumption is suppressed, the light can be turned on when needed, the light-on state can be maintained during the operation of the power tool, and forgetting to turn off is prevented.

[0005] In the second invention of the present application, an illumination trigger and a second linking means are added to the above-mentioned conventional power tool with a malfunction prevention mechanism. Here, the lighting trigger is biased so as to maintain the off position during non-operation by the operator,
The operation is changed by the operator to the on position, and the illumination device is turned on during the on position. The second cooperation means turns on the illumination trigger with the end of the operation of the illumination trigger while the main trigger is in the off position. It is allowed to change from the position to the off position, and the lighting trigger is maintained at the on position even after the operation of the lighting trigger is completed while the main trigger is at the on position. With this configuration, “1. While the main trigger is in the off position, the lighting trigger is operated to switch on and off.
2. 2. If the main trigger is operated without operating the lighting trigger, it does not light up. 3. If the lighting trigger is operated when the main trigger is in the ON position, the lighting state is maintained even after the operation of the lighting trigger is completed. Turns off when the main trigger returns to the off position '' operation, which saves unnecessary power consumption, turns on when necessary, keeps the lighting state while the power tool is operating, and forgets to turn off the light. Is prevented.

[0006] In the third invention of the present application, an illumination trigger is added to the above-described conventional power tool with a malfunction prevention mechanism.
Here, the lighting trigger is biased so as to maintain the off position during the non-operation by the operator, is changed by the operator to the on position, and turns on the lighting device during the on position. Further, according to the power tool with lighting device, the lock-off button and the lighting trigger are arranged at a position that can be simultaneously operated by one finger of the operator. In addition, the positioning operation performed in the light-off state can be selected with one finger, and the operability is good.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an arrangement relationship of main parts of a main trigger, a lock-off button, a lighting trigger, a first linking means, and a second linking means of a power tool with a lighting device embodying the invention described in claims 1 and 3. This is schematically shown.
FIG. 1 is a schematic diagram, and the exact structure is disclosed in FIG.

In FIG. 1, 32 is a main trigger, 2 is a lock-off button, and 16 is a lighting trigger. The main trigger 32 can swing about the support portion 40 as a fulcrum,
FIG. 1 shows the ON position, and the switch is switched to the OFF position by swinging in the direction of arrow 62. The lock-off button 2 is vertically movable as shown by arrows 56 and 58. The solid line in FIG. 1 indicates the lock-off position, and when the upward movement is performed as shown by an arrow 58, the position is switched to the lock position. This locked position is indicated by a chain line. Lighting trigger 16 is also arrow 5
2, 54, it is vertically movable. FIG. 1 shows the ON position, and the position is switched to the OFF position by moving upward as indicated by an arrow 54.

[0009] The main trigger 32 is provided with a through hole 42. The lock-off button 2 is provided with a projection 8. The protrusion 8 can be inserted into the through hole 42. When the lock-off button 2 is moved upward from the lock-off position indicated by the solid line in FIG. 1, the projection 8 hinders the main trigger 32 from being turned on. When the lock-off button 2 is operated and pushed down to the lock-off position indicated by the solid line in FIG.
The main trigger 32 can swing to the ON position shown in FIG.
While the main trigger 32 is in the ON position, the protrusion 8 is inserted into the through hole 42, and the lock-off button 2 is prohibited from moving upward, and the operator ends the pressing operation of the lock-off button 2. Also maintain the lock-off position. Projection 8
And the through-hole 42 constitute a first linking means. The first linking means inhibits the main trigger 32 from changing from the off position to the on position while the lock-off button 2 is in the locked position, and locks off. While the button 2 is in the lock-off position, the main trigger 32 is allowed to change from the off position to the on position, and while the main trigger 32 is in the on position, the lock-off button 2 can be operated even after the operation of the lock-off button 2 is completed. Is maintained in the lock-off position.
When the main trigger 32 returns to the off position, the lock-off button 2 is pushed up by the spring 4 and returns to the lock position.

[0010] The illumination trigger 16 is provided with a guide slot 17 through which a round bar 22 is inserted and which can be moved up and down as indicated by arrows 52 and 54. . When the lighting trigger 16 moves down, the protrusion 26
Closes the electrical contacts and turns on the lighting device. The illumination trigger 16 is turned on when it is moved down, and is turned off when it is moved up. It should be noted that FIG. 1 schematically shows the role of the members, and the relative positional relationship is not accurately illustrated. The exact positional relationship is shown in FIG. A pair of spring supports 46, 4 are provided on the side of the illumination trigger 16.
7 protrudes, and a spring 4 in which a spring steel plate is bent
4 is attached. The spring 44 moves up and down integrally with the illumination trigger 16. When the lighting trigger 16 is operated and pressed down, the spring 44 comes into contact with the round bar 22. When the lighting trigger 16 is further pressed down, the curved portion 24 formed at the lower end of the spring 44 follows the outer periphery of the round bar 22. At this time, the lower end of the spring 44 is displaced to the far right side in the drawing (that is, the spring 44 bends toward the lock-off button 2 side), and the engagement protrusion 50 provided at the lower end of the spring 44 is At the bottom of the step portion 48 provided at the bottom. While the spring 44 does not come into contact with the round bar 22, the engaging projection 50 is located on the left front side of the drawing with respect to FIG.

[0011] The curved portion 24 of the spring 44 closely adheres to the outer periphery of the round bar 22, and the engaging projection 50 is connected to the step portion 4 of the lock-off button 2.
8 is the height when the lock-off button 2 is at the lock-off position shown by the solid line. When the lock-off button 2 is in the lock position shown by the dashed line, the stepped portion 48 has a height higher than the height when the engaging projection 50 is pushed toward the lock-off button 2 side.
Higher by the vertical stroke.

For this reason, while the lock-off button 2 is moving upward (while the lock-off button 2 is at the lock position), the lighting trigger 16 can freely move up and down, and while the operator is pressing down the lighting trigger 16. The illumination trigger 16 is at the ON position, and is returned to the OFF position by the spring 18 when the operation is completed. When the operator presses down the illumination trigger 16 while the lock-off button 2 is at the lock-off position in which the lock-off button 2 is moved down, the engaging projection 50 enters the lower surface of the step portion 48 of the lock-off button 2 and the operator presses the illumination trigger. Even when the pressing operation of the button 16 is completed, the illumination trigger 16 is maintained at the ON position that has been moved downward. When the lock-off button 2 moves upward, the lighting trigger 16 also moves upward and returns to the off position.

[0013] The step portion 48 of the lock-off button 2 and the lighting trigger 1
A second linking means is formed by the engaging projection 50 of the spring 44 of the sixth embodiment, and the lock-off button 2 is formed by the second linking means.
While the light trigger 16 is in the lock position, the light trigger 16 is allowed to change from the on position to the off position with the operation end of the light trigger 16, and while the lock off button 2 is in the lock off position, the light trigger 16 is operated. Lighting trigger 16 after completion
Is maintained in the ON position.

FIG. 2 to FIG. 6 show a marunoco which is a kind of electric tool.
2 shows an example of an embodiment to which the technology described in claim 1 is applied, and shows various states from FIG. 2 to FIG. 6.

FIG. 2 illustrates a state in which the main trigger 32 is in the off position, the lock-off button 2 is in the lock position, and the illumination trigger 16 is in the off position. The main trigger 32 is a support part 4
It is supported by the body 10 so as to swing around zero. In the figure, reference numeral 34 denotes a switch device for a motor power supply,
While protruding, disconnect the electrical connection between the power tool drive motor (not shown) and the rechargeable battery (not shown),
Do not operate the power tool. The projection 38 is the switch device 34
When it is pushed to the side, the switch device 34 electrically connects the electric tool driving motor and the rechargeable battery to operate the electric tool. The projection 38 is urged toward the projecting side by a spring built in the switch device 34. In the main trigger 32,
A rib 36 abutting on the projection 38 is formed, and a spring incorporated in the switch device 34 urges the main trigger 32 in the clockwise direction 62. The main trigger 32 abuts against a stopper 10b formed on the body 10, and further rotation in the clockwise direction 62 is restricted. FIG. 2 shows this state, in which the projection 38 is projected, the motor for driving the electric tool is turned off, and the main trigger 32 is in contact with the stopper 10b. This state is main trigger 3
2 is the off position. When a lock-off button 2 described later is in a lock-off position, when the operator puts a finger on the main trigger 32 and pulls it, the main trigger 32 rotates counterclockwise against the force of a spring built in the switch device 34. Direction 60
The projection 38 is pushed in, and the electric tool driving motor is turned on. With the above configuration, the main trigger 32
Is biased to maintain the off position during non-operation by the operator, is operated by the operator to change to the on position, and operates the power tool during the on position.

The lock-off button 2 is vertically movable with respect to the body 10, and is urged upward by a spring 4,
When the locking portion 14 of the lock-off button 2 comes into contact with the stopper 9 of the body 10, further upward movement is restricted. A protrusion 8 is formed on the side of the lock-off button 2.

As described with reference to FIG. 1, when the lock-off button 2 is moved upward, the projection 8 interferes with the main trigger 32 and swings until the main trigger 32 is turned on. Prohibit that. Thus, even if the operator operates the main trigger 32 by mistake, the power tool does not operate, and the power tool does not operate unless the main trigger 32 is operated after the lock-off button 2 is operated. When the lock-off button 2 is operated and depressed by the operator, the through hole 42 of the main trigger 32 comes to a position corresponding to the projection 8 and the main trigger 32 is moved in the counterclockwise direction 6.
Swinging to 0 allows the protrusion 38 to be pushed into the switch device 34. When the main trigger 32 swings to the ON position, the protrusion 8 is fitted into the through hole 42, and the lock-off button 2 is maintained at the ON position even if the operator finishes operating the lock-off button 2. This state is shown in FIG. Obviously, the lock-off button 2 is in the lock position while moving up, and is in the lock-off position while moving down. The lock-off button 2 is urged by a spring 4 so as to maintain the lock position during non-operation by the operator, and is operated by the operator to change to the lock-off position. In addition, the protruding portion 8 and the through-hole 42 constitute a linking means,
This cooperation means inhibits the main trigger 32 from changing from the off position to the on position while the lock-off button 2 is in the lock position, and turns off the main trigger 32 while the lock-off button 2 is in the lock-off position. The lock-off button 2 is maintained at the lock-off position even after the operation of the lock-off button 2 is completed while the main trigger 32 is at the on position.

The illumination trigger 16 is attached to the body 10 so as to be vertically movable. FIG. 20 shows a switch device for illumination. The illumination device is not turned on while the projection 28 protrudes from the switch device 20, and is turned on while the projection 28 is pushed toward the switch device 20. The protrusion 28 is urged to the protruding side by a spring built in the switch device 20. At the lower end of the lighting trigger 16, a protrusion 2 is provided.
6 is provided, and when the illumination trigger 16 is at the ON position where the illumination trigger 16 has moved downward, the projection 26 pushes the projection 28 to turn on the illumination device. This is shown in FIG. Lighting trigger 1
During the upward movement of the projection 6, the projection 28 projects and the lighting device is turned off. This is shown in FIG. Obviously, the lighting trigger 16 is in the off position to turn off the lighting device while moving up, and is in the on position to turn on the lighting device while moving down. The lighting trigger 16 is urged by the spring 18 so as to maintain the off position during non-operation by the operator, is changed to the on position by the operation of the operator, and turns on the illumination device while in the on position. Let it.

As described with reference to FIG. 1, the illumination trigger 1
6 is provided with a slot 17 for guiding,
A round bar 22 is inserted through 7. Both ends of the round bar 22 are fixed to the body 10. A pair of spring supports 46 and 47 protrude from the side surface of the illumination trigger 16, and a spring 44 formed by bending a spring steel plate is attached thereto. The spring 44 moves up and down integrally with the illumination trigger 16. When the lighting trigger 16 is operated and pressed down, the spring 44 comes into contact with the round bar 22. When the lighting trigger 16 is further pressed down, the curved portion 24 formed at the lower end of the spring 44 follows the outer periphery of the round bar 22. At this time, the lower end of the spring 44 is displaced rightward on the paper surface, and the engaging projection 50 provided at the lower end of the spring 44 enters below the step portion 48 provided on the lock-off button 2. This state is shown in FIG. 3 and FIG. When the spring 44 has a natural shape, the engaging projection 50 does not enter below the step portion 48. This state is shown in FIGS.

The curved portion 24 of the spring 44 closely adheres to the outer periphery of the round bar 22 and engages with the engaging piece 50 so that the stepped portion 4 of the lock-off button 2 is formed.
As shown in FIG. 5, the height of the stepped portion 8 is the height of the step portion 48 when the lock-off button 2 is at the lock-off position. As shown in FIG. 3, when the lock-off button 2 is at the lock position, the stepped portion 48 has a height corresponding to the vertical movement stroke of the illumination trigger 16, more than the height of the engaging projection 50 pushed to the lock-off button 2 side. Only high.

For this reason, while the lock-off button 2 is moving upward, the lighting trigger 16 can freely move up and down, and while the operator is pressing down the lighting trigger 16, the lighting trigger 16 can be moved up and down.
Is in the ON position, the projection 28 is pushed in, the lighting device is turned on (FIG. 3 shows this), and when the pushing operation is completed, the spring 18 returns to the OFF position (off state), and the projection 28 projects. The lighting device is turned off (FIG. 2 shows this). When the operator presses down the lighting trigger 16 while the lock-off button 2 is in the lock-off position, the engaging projection 50 enters the lower surface of the step portion 48 of the lock-off button 2 (FIG. 5 shows this), Even if the operator finishes the pressing operation of the lighting trigger 16, the lighting trigger 16 is maintained at the lowered ON position, the projection 28 is continuously pressed, and the lighting device continues to light. When the lock-off button 2 moves upward, the lighting trigger 16 also moves upward and returns to the off position, and the lighting device turns off.

The step 48 of the lock-off button 2 and the lighting trigger 1
A second linking means is formed by the engaging projection 50 of the spring 44 of the sixth embodiment, and the lock-off button 2 is formed by the second linking means.
While the light trigger 16 is in the lock position, the light trigger 16 is allowed to change from the on position to the off position with the operation end of the light trigger 16, and while the lock off button 2 is in the lock off position, the light trigger 16 is operated. Lighting trigger 16 after completion
The relationship that maintains the ON position of the is realized.

FIG. 2 shows a state where the power tool is not used. In contrast, FIG. 3 shows that the main trigger 32 is in the off position,
The lock-off button 2 indicates a lock position, and the illumination trigger 16 indicates an on position (lighted state). That is, a state in which the operator has pressed down only the illumination trigger 16 from the state of FIG. 2 is shown.

In FIG. 3, since the lock-off button 2 is moved upward, the protruding portion 8 is prevented from interfering with the main trigger 32 and swinging the main trigger 32 to the ON position. Therefore, even if the operator operates the main trigger 32 by mistake, the power tool does not operate, and the power tool does not operate unless the main trigger 32 is operated after the lock-off button 2 is pressed.

In FIG. 3, the lighting trigger 16 is pushed down by the operator and is moved downward. In this state, lighting trigger 1
Since 6 is in the ON position, the projection 26 pushes the projection 28 and the lighting device is turned on.

When the operator finishes the pressing operation of the lighting trigger 16 in this state, the lighting trigger 16 moves upward by the spring 18 and returns to the off position because the step portion 48 of the lock-off button 2 is separated upward. Then, the lighting device is turned off. As can be understood from the above, while the lock-off button 2 is in the off position where the lock-off button 2 is moved upward, the operator can freely turn on and off the lighting device using the lighting trigger 16.

FIG. 4 shows a state in which the lock-off button 2 is switched to the lock-off position, the main trigger 32 is switched to the on position, and the lighting trigger 16 is not pressed.

Obviously from the state of FIG. 4, even if the operator operates the lock-off button 2 and the main trigger 32, unless the lighting trigger 16 is operated, the lighting device does not turn on and the power tool is operated without turning on the lighting device. Can be done. FIG.
It is possible for the operator to press down the lighting trigger 16 from the state described above, so that after starting the power tool work without turning on the light, the lighting device can be turned on during the work. When the lighting trigger 16 is pressed down while working with the power tool, the state shown in FIG. 5 is obtained, the engaging projection 50 is pressed from above by the step 48, and the pressing operation of the lighting trigger 16 is completed. Also, the lighting trigger 16 is maintained at the ON position, and the lighting device continues to be lit during work. This state continues until the lock-off button 2 returns to the lock position, and when the lock-off button 2 returns to the lock position, the lighting device is turned off.

FIG. 5 shows the main trigger 32 in the ON position, the lock-off button 2 in the lock-off position, and the illumination trigger 16 in the ON position. This state is obtained when the main trigger 32 is operated while the operator is simultaneously pressing down the lock-off button 2 and the lighting trigger 16 with one finger. Once this state is obtained, this state is maintained even after the pressing operation of the lock-off button 2 and the lighting trigger 16 is terminated. Alternatively, as described above, once FIG.
The state shown in FIG. 5 can be obtained by pressing the illumination trigger 16 after that. The lighting trigger 16 and the lock-off button 2 are arranged in the body 10 close to a position where an operator can simultaneously operate with one finger, and by using one finger properly, the state of FIG. State can be selected.

Next, an embodiment of the invention according to claims 2 and 3 will be described with reference to the drawings. FIGS. 6 to 10 show an example of an embodiment in which the invention according to claims 2 and 3 is applied to a circular saw which is a kind of electric power tool, showing various states from FIGS. 6 and 8 to FIG. ing.

FIG. 6 shows a state in which the main trigger 132 is in the off position, the lock-off button 102 is in the lock position, and the illumination trigger 116 is in the off position. Main trigger 132
Has substantially the same structure as that of the embodiment described above, and is supported by the body 110 so as to be swingable around the support portion 140. In the drawing, reference numeral 134 denotes a switch device for a motor power supply, which disconnects an electric connection between a power tool driving motor (not shown) and a rechargeable battery (not shown) while the projection 138 is projected, and does not operate the power tool. When the projection 138 is pushed toward the switch device 134, the switch device 1
Reference numeral 34 electrically connects the power tool driving motor and the rechargeable battery to operate the power tool. The protrusion 138 is urged to the protruding side by a spring built in the switch device 134. The main trigger 132 is formed with a rib 136 that abuts on the projection 138.
4 urges the main trigger 132 in the clockwise direction 162. When the main trigger 132 contacts the stopper 110b formed on the body 110, further rotation in the clockwise direction 162 is restricted.
FIG. 6 shows this state, in which the projection 138 is projected, the motor is turned off, and the main trigger 132 is in contact with the stopper 110b. When a lock-off button 102 described later is in a lock-off position, the operator pulls the main trigger 132 with his / her finger and pulls the main trigger 132 counterclockwise against the force of a spring built in the switch device 134. It swings in the rotation direction 160, the projection 138 is pushed in, and the motor is turned on. With the above configuration, the main trigger 1
Reference numeral 32 is urged to maintain the off position during non-operation by the operator, is changed by the operator to the on position, and operates the power tool during the on position.

The lock-off button 102 has substantially the same structure as that described above, is vertically movable with respect to the body 110, is urged upward by a spring 104, and is The further upward movement is restricted by the contact of the locking portion 114 of the 102 with the stopper 109 of the body 110. A protrusion 108 is formed on the side of the lock-off button 102.

When the lock-off button 102 has been moved upward, the projection 108 interferes with the main trigger 132 and inhibits the main trigger 132 from swinging to the ON position. Thus, even if the operator operates the main trigger 132 by mistake, the power tool does not operate, and the power tool does not operate unless the main trigger 132 is operated after the lock-off button 102 is pressed. . When the lock-off button 102 is operated and depressed by the operator, the through-hole 142 of the main trigger 132 comes to a position corresponding to the projection 108, and the main trigger 132 swings counterclockwise 160 to switch the projection 138. It can be pushed into the device 134. When the main trigger 132 swings to the ON position, the protrusion 108 is fitted into the through hole 142, and even if the operator finishes the pressing operation of the lock-off button 102,
The lock-off button 102 is maintained at the lock-off position. This state is shown in FIGS. While the lock-off button 102 is moving upward, it is in the lock position,
It is in the lock-off position while moving down. The lock-off button 102 is urged by a spring 104 to maintain the lock position during non-operation by the operator, and is operated by the operator to change to the lock-off position. Further, the projection 108 and the through hole 142 constitute a linking means. The linking means inhibits the main trigger 132 from changing from the off position to the on position while the lock-off button 102 is at the lock position. While the off button 102 is in the lock-off position, the main trigger 132 is allowed to change from the off position to the on position, and while the main trigger 132 is in the on position, the lock-off button is maintained even after the operation of the lock-off button 102 is completed. Maintain 102 in the lock-off position.

The illumination trigger 116 is mounted on the body 110 so as to be vertically movable. The illustration 120 shows a switch device for illumination. The illumination device is not turned on while the projection 128 protrudes from the switch device 120, and is turned on while the projection 128 is pushed toward the switch device 120 side. The protrusion 128 is urged to the protruding side by a spring 118 built in the switch device 120. A projection 126 and a recess 124 are provided below the illumination trigger 116. When the illumination trigger 116 is in the ON position, the projection 1
26 pushes the projection 128 to light the lighting device. This is shown in FIG. While the illumination trigger 116 is moving upward, the concave portion 124 of the illumination trigger 116 is located at a position corresponding to the projection 128, and the projection 128 projects so that the lighting device is turned off. This is shown in FIG. While the lighting trigger 116 is moving up, it is in the off position for turning off the lighting device, and while moving down, it is in the on position for turning on the lighting device. The lighting trigger 116 is urged by the spring 118 to maintain the off position during non-operation by the operator, and is pressed down by the operator to change to the on position. Turn on. As will be described later, while the main trigger 132 is in the off position, whether the lock-off button 102 is moving up or down, the lighting trigger 116 can be freely moved up and down. Lighting trigger 11 during the pressing operation
6 is in the ON position, the projection 128 is pushed in, and the lighting device is turned on. When the operation is completed, the spring 118 returns to the OFF position, and the projection 128 projects to turn off the lighting device.

In this embodiment, once the main trigger 13
When both the lighting trigger 116 and the lighting trigger 116 are turned to the ON position, a cooperating means for maintaining the lighting trigger 116 at the ON position while the main trigger 132 is ON is incorporated even if the pressing operation of the lighting trigger 116 is terminated thereafter. I have. The structure will be described with reference to FIG. As shown in FIG. 7, the lighting trigger 116 can be moved up and down as shown by arrows 152 and 154, and a cut 130
Are formed, and an engagement surface 130 </ b> A is formed at the lower end of the cut 130. On the other hand, a stopper bar 144 is mounted so as to be orthogonal to the illumination trigger 116. The stopper bar 144 has an elongated hole 149 between the rear end 148 and the front end 150. The lighting trigger 116 passes through the elongated hole 149. The long hole 149 is sufficiently long, and the stopper bar 144 can move left and right as shown by arrows 164 and 166 with the illumination trigger 116 penetrating. The stopper bar 144 is urged rightward in the figure by a spring 146. When the illumination trigger 116 moves down, the cut 130 is located at a position corresponding to the stopper bar 144.
Is moved rightward by the spring 146, the lower surface 144A of the stopper bar 144 abuts on the engagement surface 130A of the illumination trigger 116, and the illumination trigger 116 is maintained at the ON position.

In the state shown in FIG. 6, the distal end 150 of the stopper bar 144 is pressed against the main trigger 132 by the elastic force of the spring 146. Switch device 134
Is stronger than the force of the spring 146, and the state of FIG. 6 is maintained. That is, the protrusion 138 causes the main trigger 13 to move in a direction smaller than the force of the spring 146 pressing the main trigger 132 in the arrow 164 direction via the stopper bar 144.
2, the main trigger 132 is pressed against the stopper 110b, and even if the lock-off button 102 is pushed in the direction of arrow 156 in this state, the operator will Unless the main trigger 132 is pushed in the direction of the arrow 160, the main trigger 132 pushes the projection 138 and the main trigger 1
32 will not be in the on position.

In the state of FIG. 6, the lighting trigger 116 can be moved down by the operator performing a pressing operation, and the state after the pressing is shown in FIG. That is, with this electric tool, only the lighting operation can be performed without operating the main trigger 132.

FIG. 8 shows a state in which the main trigger 132 is in the off position, the lock-off button 102 is in the lock position, and the illumination trigger 116 is pressed down by the operator to be in the on position. That is, the operator changes the lighting trigger 116 from the state shown in FIG.
This shows a state in which only the button is pressed.

In FIG. 8, since the lock-off button 102 has moved upward, the lock-off button 102 is in the locked position, and the projection 108 is
The main trigger 132 is prevented from swinging to the ON position due to interference with the main trigger 132.

The illumination trigger 116 is pushed down by the operator, and the projection 126 pushes the projection 128, so that the illumination device is turned on. Note that the illumination trigger 116 shown in FIG.
In the state in which the lighting device is moving upward, the projection 128 projects into the concave portion 124 and the lighting device is turned off.

The notch 130 of the illumination trigger 116 and the stopper bar 144 form a second linking means. As shown in FIG. 8, when the lighting trigger 116 is pressed down, the cut 130 descends to the existing height of the stopper bar 144, but the tip 150 of the stopper bar 144 contacts the main trigger 132 and moves to the right in the drawing. Since the movement is prohibited, the stopper bar 144 cannot enter the cut 130, and when the operator finishes the pressing operation of the lighting trigger 116, the lighting trigger 116 is returned to the off position by the spring 118, and the operation shown in FIG. Returning to the state, the lighting device is turned off.

The on-cooperation means allows the lighting trigger 116 to be freely operated while the main trigger 132 is at the off position, and the lighting trigger 116 is changed from the on position to the off position when the operation of the lighting trigger 116 is completed. To be changed. This relationship is maintained while the main trigger 132 is in the off position, whether the lock-off button 102 is in the locked position or the locked-off position.

On the other hand, FIG. 9 shows a state in which the main trigger 132 is in the ON position, the lock-off button 102 is in the lock-off position, and the illumination trigger 116 is in the OFF position. That is, a case where the operator does not operate the illumination trigger 116 but presses only the lock-off button 102 and operates the main trigger 132 to the on position from the state of FIG. In this case, the lighting device is not turned on. That is, the power tool can be operated without being turned on.

In this case, although the main trigger 132 swings in the clockwise rotation direction 162, the rear end 148 of the stopper bar 144 abuts on the side of the illumination trigger 116 other than the cut 130 and moves rightward in the figure. Ban. For this reason, the cut 130 and the stopper bar 144 do not engage,
The downward movement of the illumination trigger 116 is not prohibited. Thus, after the operator starts operating the power tool, the operator can press down the illumination trigger 132 to turn on the illumination device. That is, after starting the work using the power tool without turning on the light, if the lighting becomes necessary, the light can be turned on at that time. This state is shown in FIG.

FIG. 10 shows the main trigger 132 in the ON position, the lock-off button 102 in the lock-off position, and the illumination trigger 11
Reference numeral 6 denotes an ON position. In this state, the operator changes the lock-off button 102 and the lighting trigger 116 from the state shown in FIG.
When the main trigger 132 is operated by depressing both of them, or when the lock-off button 10 is
The state shown in FIG. 9 is implemented by operating only the main trigger 132 by pressing only the button 2, and then realized when the lighting trigger 116 is pressed down. This state is maintained while the main trigger 132 is being operated.
When the operation is completed, the state returns to the state of FIG.

In this state, the cut 130 provided on the illumination trigger 116 is lowered to the height of the stopper bar 144, and the main trigger 132 is turned in the counterclockwise direction 160.
The stopper bar 144 is moved rightward in the figure by the spring 146, and the rear end 148 of the stopper bar 144 enters the cut 130. As a result,
The engagement surface 130A of the cut 130 schematically shown in FIG. 7 is pressed by the lower surface 144A of the rear end portion 148 of the stopper bar 144, and when this occurs, the operator finishes the pressing operation of the illumination trigger 116. Also, the lighting trigger 116 is maintained at the lowered ON position, and the lighting device continues to light. This state is maintained until the operation of the main trigger 132 ends. When the operation of the main trigger 132 is completed and the main trigger 132 swings clockwise 162, the tip of the stop bar 144 is pushed leftward by the main trigger 132, and the rear end 148 is pushed out of the cut 130. As a result, the lighting trigger 116 is allowed to move upward, the spring 118 moves the lighting trigger 116 upward, returns to the off position, and turns off the lighting device. Infeed 130
And the stopper bar 144, the illumination trigger 11 while the main trigger 132 is in the ON position.
6, the lighting trigger 116 is maintained at the on position even after the operation is completed, and the illumination trigger 116 is returned to the off position when the operation of the main trigger 132 is completed. Although two embodiments of the present invention have been illustrated above, the technical scope of the present invention is not limited to this embodiment, and extends to various modifications within the scope described in the claims. It is.

[0047]

Since the present invention is configured as described above, the following effects can be obtained.

[0048] According to the power tool of claim 1 or 2, wasteful power consumption is suppressed, and the power tool can be freely turned on when necessary.
There is no need to continue the lighting operation during the operation of the power tool, and the forgetting to turn off the light is prevented.

According to the electric power tool of the third aspect, the operation of turning on the light and the operation of not turning on the light can be freely switched with one finger, and good operability can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an arrangement relationship of a main part of the electric power tool according to claim 1;

FIG. 2 is a view showing a state in which a main trigger is in an off position, a lock-off button is in a lock position, and a lighting trigger is in an off position, in the electric tool embodying claim 1;

FIG. 3 is a main trigger of the power tool shown in FIG. 2 in an off position;
The figure which shows the state in which a lock-off button is in a lock position and a lighting trigger is in an on position.

4 is a main trigger of the power tool of FIG.
The figure which shows the state in which a lock-off button is in a lock-off position and a lighting trigger is in an off position.

5 is a main trigger of the power tool of FIG.
The figure which shows the state in which a lock-off button is in a lock-off position and a lighting trigger is in an on position.

FIG. 6 is a view showing a state in which a main trigger is in an off position, a lock-off button is in a lock position, and a lighting trigger is in an off position, in the electric power tool embodying claim 2;

FIG. 7 is a schematic diagram showing an arrangement relationship of a main part of an electric tool embodying claim 2;

FIG. 8 shows a main trigger of the power tool shown in FIG.
The figure which shows the state in which a lock-off button is in a lock position and a lighting trigger is in an on position.

9 is a main trigger of the power tool of FIG.
The figure which shows the state in which a lock-off button is in a lock-off position and a lighting trigger is in an off position.

FIG. 10 is a view showing the power tool of FIG. 6 in a state in which a main trigger is in an ON position, a lock-off button is in a lock-off position, and a lighting trigger is in an ON position.

[Explanation of symbols]

 2 Lock-off button 4 Spring 8 Projection 9 Stopper 10 Body 10b Stopper 14 Locking portion 16 Lighting trigger 17 Guide long hole 18 Spring 20 Switch device 22 Round bar 24 Curved portion 26 Projection portion 28 Projection 32 Main trigger 34 Switch device 36 Rib 38 Protrusion 40 Supporting part 42 Through hole 44 Spring 46 Spring support 47 Spring support 48 Step 50 Engagement projection 111 Stopper 113 Stopper 122 Engagement part 124 Depression 126 Convex part 130 Cut 130A Engagement surface 144 Stopper bar 146 Spring 148 Rear end 149 Slot 150 Front end

Claims (3)

[Claims] 1. A main trigger, a lock-off button and a first trigger.
A power tool with a lighting device comprising a linking means, a lighting trigger, and a second linking means, wherein the main trigger is biased to maintain the off position during non-operation by the operator, and is operated by the operator. The power tool is operated during the ON position, and the lock-off button is urged to maintain the lock position when not operated by the operator. The first linking means inhibits the main trigger from changing from the off position to the on position while the lock-off button is in the lock position, and inhibits the main trigger from changing from the off position to the on position while the lock-off button is in the lock position. The trigger is allowed to change from the off position to the on position, and while the main trigger is in the on position, the lock off button is maintained at the lock off position even after the operation of the lock off button is completed. The trigger is biased so as to maintain the off position during non-operation by the operator, is operated by the operator, changes to the on position, and turns on the illumination device during the on position. Allows the light trigger to change from the on position to the off position with the end of operation of the light trigger while the lock off button is in the lock position, and allows the light trigger to change while the lock off button is in the lock off position. A power tool with a lighting device, wherein a lighting trigger is maintained at an on position even after the operation is completed. 2. A main trigger, a lock-off button and a first trigger.
A power tool with a lighting device comprising a linking means, a lighting trigger, and a second linking means, wherein the main trigger is biased to maintain the off position during non-operation by the operator, and is operated by the operator. The power tool is operated during the ON position, and the lock-off button is urged to maintain the lock position when not operated by the operator. The first linking means inhibits the main trigger from changing from the off position to the on position while the lock-off button is in the lock position, and inhibits the main trigger from changing from the off position to the on position while the lock-off button is in the lock position. The trigger is allowed to change from the off position to the on position, and while the main trigger is in the on position, the lock off button is maintained at the lock off position even after the operation of the lock off button is completed. The trigger is biased so as to maintain the off position during non-operation by the operator, is operated by the operator, changes to the on position, and turns on the illumination device during the on position. Allows the light trigger to change from the on position to the off position with the end of the light trigger operation while the main trigger is in the off position, and after the light trigger operation ends while the main trigger is in the on position A power tool with a lighting device, wherein the lighting trigger is maintained at an ON position. 3. A main trigger, a lock-off button and a first trigger.
A power tool with a lighting device equipped with a linking means and a lighting trigger.The main trigger is urged to maintain the off position during non-operation by the operator, and changes to the on position when operated by the operator. The power tool is operated during the ON position, and the lock-off button is biased so as to maintain the lock position when not operated by the operator, and is operated by the operator to change to the lock-off position. The first cooperation means prohibits the main trigger from changing from the off position to the on position while the lock-off button is in the lock position, and prohibits the main trigger from changing from the off position while the lock-off button is in the lock off position. It is allowed to change to the on position, and while the main trigger is in the on position, the lock off button is maintained in the lock off position even after the operation of the lock off button is completed. During the non-operation by the operator, it is urged to maintain the off position, it is operated by the operator and changes to the on position, the illumination device is turned on during the on position, and the lock off button and the illumination trigger are operated A power tool with an illuminating device, wherein the power tool is arranged at a position that can be simultaneously operated by one finger of a user.