CN113838699B - Trigger switch - Google Patents

Abstract

A trigger switch comprises a housing unit, a control unit and a steering unit. The shell seat unit comprises a first shell seat and a second shell seat which are mutually matched, and the first shell seat and the second shell seat are matched to define a pivot groove. The control unit comprises a circuit board, a conductive sliding seat group, a spanner group and a magnetic induction group. The conductive sliding seat group can move relative to the circuit board and is provided with a plurality of conductive elastic sheets which are used for being electrically connected with the circuit board. The trigger set is used for driving the conductive sliding seat set to move. The magnetic induction group is provided with a Hall component and a magnetic piece moving along with the conductive sliding seat group. The steering unit comprises a deflector rod which is arranged in the pivot groove in a pivotable manner, and the deflector rod is integrally formed and is provided with a pivot which is pivoted in the pivot groove and a steering spring piece which can be in spring contact with the circuit board. The invention does not need screw connection, and can improve the structural strength and prolong the service life by utilizing the design that the deflector rod is integrally formed.

Description

Trigger switch

Technical Field

The present invention relates to a trigger switch, and more particularly, to a trigger switch for an electric tool.

Background

A general electric tool is turned on and off by using a trigger switch and a circuit design, and is used for controlling the rotation speed and adjusting the steering.

As shown in fig. 1 and 2, a conventional trigger switch 1 includes a housing 11, a depressible trigger 12, a push shaft 13 connected to the trigger 12 and penetrating the housing 11, a circuit board 14 disposed in the housing 11, and a steering device 15 rotatably disposed in the housing 11. The push shaft 13 has a conductive spring (not shown) at one end adjacent to the circuit board 14, which can be electrically connected to the circuit board 14, and by pressing or releasing the trigger 12, the relative position of the push shaft 13 and the circuit board 14 is changed, so as to generate different electronic signals such as power on, power off, and resistance change, thereby controlling the operation of the electric tool.

The steering device 15 is used for changing the rotation direction of the electric tool, the steering device 15 has a driving arm 151 and a rotating arm 152, the driving arm 151 is used for driving a conductive spring sheet (not shown) to rotate relative to the circuit board 14 so as to generate a forward or reverse rotation electronic signal, the rotating arm 152 is screwed on the driving arm 151 by a screw 153, and the user can change the rotation direction of the electric tool by only turning the rotating arm 152 leftwards or rightwards.

Although the trigger switch 1 has the above-mentioned characteristics, the screw 153 may be loosened after the steering device 15 is repeatedly turned for a period of time, and the combination of the driving arm 151 and the rotating arm 152 may be unstable and the torque may not be smoothly transmitted, so that the durability may be poor.

Disclosure of Invention

The invention aims to provide a trigger switch with high durability.

The trigger switch is suitable for being installed on an electric tool and comprises a shell seat unit, a control unit and a steering unit.

The shell seat unit comprises a first shell seat and a second shell seat which are mutually matched, an accommodating space is defined by the first shell seat and the second shell seat in a matched mode, a sliding hole which is communicated with the accommodating space and extends along the front-back direction, and a pivoting groove which extends along the top-bottom direction, and the shell seat unit is provided with an installation part which is positioned in the accommodating space and is opposite to the sliding hole in a spaced mode.

The control unit is operably arranged on the shell seat unit and comprises a circuit board, a conductive sliding seat group, a spanner group and a magnetic induction group.

The circuit board is arranged in the accommodating space and is provided with a plurality of metal strips which are positioned on the upper surface and used for controlling the rotation direction of the electric tool, and a plurality of conductive strips which are positioned on the lower surface and used for controlling the operation of the electric tool. The conductive sliding seat set is positioned in the accommodating space and can move relative to the circuit board along the front-back direction, and the conductive sliding seat set is provided with a plurality of conductive elastic sheets used for being electrically connected with the conductive belt. The trigger set can be arranged on the shell seat unit in a pressed mode and used for driving the conductive sliding seat set to move, and is provided with a pushing shaft penetrating through the sliding hole and connected with the conductive sliding seat set, and a reset elastic piece which can be arranged between the pushing shaft and the installation part in a compressed mode. The magnetic induction group is provided with a Hall component electrically connected to the circuit board and a magnetic piece which is arranged opposite to the Hall component and moves along with the conductive sliding seat group.

The steering unit is operably arranged on the shell seat unit and comprises a deflector rod which is pivotably arranged on the pivot groove and a steering spring piece which is arranged on the deflector rod and can be in spring contact with the metal belt of the circuit board, and the deflector rod is integrally formed and is provided with a pivot which is pivoted on the pivot groove.

According to the trigger switch disclosed by the invention, the conductive sliding seat group is further provided with the sliding seat connected with the pushing shaft, the conductive elastic sheet can be arranged on the sliding seat in a sprung manner, the magnetic piece is arranged on the sliding seat, and the Hall assembly is connected to the lower surface of the circuit board and faces the magnetic piece.

The trigger switch of the invention is characterized in that the deflector rod is also provided with a steering end for arranging the steering spring plate and a positioning convex block positioned between the steering end and the pivot, the steering unit also comprises a positioning spring plate, the positioning spring plate is provided with a plurality of concave parts arranged at intervals, and the positioning convex block is selectively clamped into one of the concave parts.

The trigger switch of the invention, the pivot groove is provided with a dustproof section, and the steering unit also comprises a dustproof gasket sleeved on the pivot and accommodated in the dustproof section.

The trigger switch of the invention, the trigger group is also provided with a dust-proof ring which is embedded in the sliding hole and is contacted with the pushing shaft in a sliding way.

The trigger switch of the invention, the housing unit also surrounds and defines a glue filling chamber communicated with the accommodating space, the control unit also comprises a flat cable which is connected with the circuit board, passes through the glue filling chamber and passes out of the housing unit, and the glue filling chamber is used for filling glue so as to position the flat cable.

The trigger switch of the invention is characterized in that the conductive sliding seat group is also provided with a sliding seat connected with the pushing shaft, the conductive elastic sheet can be arranged on the sliding seat in a sprung manner and moves along with the sliding seat, and each conductive elastic sheet is provided with a conducting section for abutting one of the conductive belts, two connecting sections respectively positioned at two opposite sides of the conducting section, and two inner hook sections respectively connected with the connecting sections, wherein the inner hook sections extend in opposite directions.

In the trigger switch of the invention, the sliding seat is provided with a plurality of mounting grooves which are positioned at the top end and are respectively provided for the conductive elastic pieces, each mounting groove is provided with a groove bottom surface, the inner hook section of each conductive elastic piece is accommodated in each mounting groove, and one inner hook section of each conductive elastic piece is abutted against the corresponding groove bottom surface.

According to the trigger switch disclosed by the invention, the first shell seat and the second shell seat are respectively provided with the sliding grooves, the sliding grooves are oppositely arranged in the left-right direction, the conductive sliding seat group is provided with the sliding seat connected with the pushing shaft, the conductive elastic sheet can be arranged on the sliding seat in a sprung manner and move along with the sliding seat, and the sliding seat is provided with two sliding blocks which are respectively formed on the left side and the right side and can be arranged on the sliding grooves in a sliding manner.

The trigger switch of the invention is characterized in that the trigger group is also provided with a trigger for pressing, the trigger and the pushing shaft are integrally formed, a caulking groove is formed at one end of the pushing shaft opposite to the trigger, the conductive sliding seat group is provided with a sliding seat connected with the pushing shaft, and the sliding seat is provided with a filler rod embedded in the caulking groove.

The invention has the beneficial effects that: the invention can be pivoted in the pivot groove through the pivot, and the deflector rod is not required to be screwed when being assembled in the shell seat unit, and the deflector rod is integrally formed, so that the structure strength can be improved, and the service life can be prolonged.

Drawings

Other features and advantages of the present invention will become apparent from the following description of the embodiments with reference to the drawings, in which:

FIG. 1 is a perspective view of a prior art trigger switch;

FIG. 2 is a fragmentary, exploded perspective view of the prior art trigger switch;

FIG. 3 is a perspective view of an embodiment of the trigger switch of the present invention;

FIG. 4 is a fragmentary, exploded perspective view of the embodiment;

FIG. 5 is a fragmentary cross-sectional side schematic view of the embodiment;

FIG. 6 is a partially exploded perspective view illustrating a control unit and a steering unit of the embodiment mounted to a housing unit;

FIG. 7 is a fragmentary perspective view from the bottom side toward the top side illustrating a magnetically induced group of the control unit;

FIG. 8 is a schematic top view illustrating a lever and positioning spring of the steering unit;

FIG. 9 is a schematic top view similar to FIG. 8 illustrating turning the lever left and snapping a pushing protrusion into a recess on the right side of the positioning spring;

FIG. 10 is a schematic top view similar to FIG. 9 illustrating turning the lever right and snapping the pushing protrusion into a recess on the left side of the positioning spring;

FIG. 11 is a schematic view of an upper surface of a circuit board of the control unit and a steering spring of the steering unit;

FIG. 12 is a schematic view of the lower surface of the circuit board and two conductive spring plates of a conductive slider set;

FIG. 13 is a schematic view similar to FIG. 12 illustrating the conductive dome moving and turning on the switching signal of the circuit board; and

Fig. 14 is a schematic view similar to fig. 11 illustrating the steering spring rotating along the circuit board.

Detailed Description

Referring to fig. 3 and 4, an embodiment of the trigger switch of the present invention is adapted for mounting on a power tool (not shown) such as a screwdriver, drill or other rotary tool. The trigger switch is used for controlling the power-on and power-off of the electric tool and adjusting the rotating speed and the steering, and comprises a housing unit 2, a control unit 3 and a steering unit 4.

Referring to fig. 4 to 6, the housing unit 2 includes a first housing 21 and a second housing 22 that are mutually engaged along a left-right direction X, wherein the first housing 21 and the second housing 22 cooperate to define a receiving space 200, a sliding hole 201 that is communicated with the receiving space 200 and extends along a front-rear direction Y, a pivot slot 20 that is higher than the sliding hole 201 in a top-bottom direction Z and is communicated with the receiving space 200, and a glue filling chamber 203 that is communicated with the receiving space 200 and the outside. The sliding hole 201 has a fully circumferential groove 204. The pivot slot 20 extends along the top-bottom direction Z with both ends closed, and the pivot slot 20 has a pivot section 205, a dust-proof section 206 higher than the pivot section 205 and having an inner diameter larger than the inner diameter of the pivot section 205, and a hollow section 207 higher than the dust-proof section 206.

In this embodiment, the first housing 21 has a supporting platform 211 located in the accommodating space 200, a chute 212 extending along the front-rear direction Y, and a mounting portion 213 adjacent to the rear end of the chute 212, wherein the supporting platform 211 is higher than the chute 212 and the mounting portion 213 and has an abutment block 214. The mounting portion 213 is located in the accommodating space 200 and is spaced apart from the slide hole 201 in the front-rear direction Y. Preferably, the mounting portion 213 is a groove. More preferably, the glue-pouring chamber 203 is formed in the first housing 21, and the glue-pouring chamber 203 is located below the mounting portion 213. The second housing 22 has a slide groove 221 which is disposed opposite to the slide groove 212 of the first housing 21 in the left-right direction X.

The control unit 3 is operatively arranged to the housing unit 2 and is used to control the operation of the power tool. The control unit 3 includes a circuit board 31, a flat cable 32, a conductive slider set 33, a trigger set 34, and a magnetic induction set 37. The circuit board 31 is disposed in the accommodating space 200 and fixed to the bottom side of the supporting table 211, and the circuit board 31 is used for controlling the operation and rotation direction of the electric tool. The flat cable 32 is connected to the circuit board 31, passes through the glue-pouring chamber 203 and passes out of the housing unit 2, and the glue-pouring chamber 203 is filled with glue to position the flat cable 32, so as to prevent the flat cable 32 from being pulled by external force to fall off or break.

Referring to fig. 5 to 7, the conductive sliding seat set 33 is slidably disposed in the accommodating space 200 and can move along the front-rear direction Y relative to the circuit board 31, the conductive sliding seat set 33 has a sliding seat 35, and two conductive elastic pieces 36 that can be resiliently disposed on the sliding seat 35 and are used for contacting with the lower surface of the circuit board 31, and the conductive elastic pieces 36 move along with the sliding seat 35. The sliding seat 35 has a groove 350 with an open top side and a front-back opening, two mounting grooves 351 adjacent to the groove 350 and located at the top end for the conductive spring plates 36 to be disposed, two sliding blocks 352 formed on the left and right sides and slidably disposed in the sliding grooves 212 and 221, a shaft channel 353 passing through the front-back and located between the sliding blocks 352, and a molding 354 surrounding the shaft channel 353. Each of the mounting grooves 351 has a groove bottom surface 355, an upper opening 356 spaced apart from the respective groove bottom surface 355, and a front opening 357 communicating with the upper opening 356. Each conductive spring plate 36 has a conducting section 361 for abutting against the lower surface of the circuit board 31, two connecting sections 362 respectively located at two opposite sides of the conducting section 361, and two inner hook sections 363 respectively connected to the connecting sections 362, wherein the conducting sections 361 are located above the respective upper openings 356. The inner hook sections 363 extend toward each other and are accommodated in the respective mounting grooves 351, wherein one inner hook section 363 is lower than the other inner hook section 363 and abuts against the corresponding groove bottom 355, and preferably, the conductive spring plates 36 are integrally connected to be mutually conducted. The inner hook section 363 of each conductive spring piece 36 is accommodated in the respective mounting groove 351, and one of the inner hook sections 363 is abutted against the corresponding groove bottom 355, so as to improve the contact stability between each conductive spring piece 36 and the circuit board 31, and avoid the problem of signal interruption caused by vibration generated by the high-speed rotation of the electric tool.

The trigger set 34 is configured to be pressed against the housing unit 2 and is used for driving the conductive sliding seat set 33 to move, and the trigger set 34 has a trigger 341 for pressing, a pushing shaft 342 for connecting the trigger 341 and the conductive sliding seat set 33, a reset elastic member 343 configured between the pushing shaft 342 and the mounting portion 213 in a compressible manner, and a dust-proof ring 344. Preferably, the trigger 341 and the pushing shaft 342 are integrally formed, and the pushing shaft 342 is slidably disposed through the sliding hole 201.

Referring to fig. 4, 5 and 7, preferably, a semicircular groove 345 is formed on the outer circumferential surface of the pushing shaft 342, and the groove 345 is disposed at an end opposite to the trigger 341 and is embedded by a fillet 354 of the sliding seat 35, so that the sliding seat 35 can be stably assembled on the pushing shaft 342. The restoring elastic member 343 is a compression spring, preferably, the end surface of the pushing shaft 342 facing the mounting portion 213 is formed with a concave annular groove 346, one end of the restoring elastic member 343 is accommodated in the annular groove 346, and the other end of the restoring elastic member 343 is pushed against the mounting portion 213, when the trigger 341 is pressed to drive the pushing shaft 342 to drive the conductive sliding seat set 33 to move toward the mounting portion 213, the restoring elastic member 343 is extruded to generate a potential energy for constantly restoring the pushing shaft 342. The dust-proof ring 344 is embedded in the groove 204 of the sliding hole 201 and is positioned in the sliding hole 201, the dust-proof ring 344 is slidably contacted by the pushing shaft 342, the dust-proof ring 344 has a dust-proof function of preventing dust and foreign matters from entering the sliding hole 201, and the design of embedding the dust-proof ring 344 in the sliding hole 201 can reduce the resistance of the trigger set 34 when in operation, so that the user can easily press the trigger set, and the operation hand feeling of the embodiment is better.

The magnetic induction set 37 has a hall element 371 electrically connected to the circuit board 31, and a magnetic member 372 disposed opposite to the hall element 371 and moving along with the conductive slider set 33. In this embodiment, the magnetic member 372 is disposed in the groove 350 of the sliding seat 35, and the hall element 371 is connected to the lower surface of the circuit board 31 and faces the magnetic member 372. However, in other variations, the hall element 371 and the magnetic element 372 can be disposed at other positions, as long as the magnetic element 372 can move relative to the hall element 371.

Referring to fig. 3 to 5, the steering unit 4 is operatively disposed on the housing unit 2, and the steering unit 4 includes a lever 41, a steering spring 42, a dust washer 43, and a positioning spring 44. The shift lever 41 is pivotally disposed in the pivot slot 20, and the shift lever 41 has a pivot 411 pivotally disposed in the pivot slot 20, a shift end 412 and a turning end 413 disposed in opposite directions, and a positioning protrusion 410 disposed between the turning end 413 and the pivot 411. The pivot 411 is integrally formed and has a top shaft section 415 and a bottom shaft section 416, the top shaft section 415 is located in the hollow section 207, and the lever 41 is integrally formed and has better structural strength. The toggle end 412 is configured to be toggled by a user to enable the toggle lever 41 to rotate relative to the pivot slot 20 about the pivot 411.

The steering spring 42 is disposed at the bottom side of the steering end 413 of the lever 41 and can be elastically contacted with the upper surface of the circuit board 31, and the steering spring 42 is formed with two contacts for electrically connecting with the circuit board 31 to control the rotation direction of the electric tool. The dustproof washer 43 is sleeved on the pivot 411 and is accommodated in the dustproof section 206 of the pivot slot 20, thereby having a dustproof effect, and it is noted that the dustproof washer 43 has elasticity and can be stretched, so that the dustproof washer 43 is sleeved by the poking end 412 of the poking rod 41 and moves towards the pivot 411 to achieve positioning. The positioning spring 44 is disposed on the support 211 and located between the abutment block 214 and the positioning protrusion 410.

In the present invention, the pivot shaft 411 is pivotally disposed in the pivot groove 20, and the lever 41 is assembled to the housing unit 2 by mutually aligning the first housing 21 and the second housing 22, so that a screw connection is not required. Meanwhile, the structure strength can be improved and the service life can be prolonged by utilizing the design that the deflector rod 41 is integrally formed, so that the invention has higher durability.

It should be noted that, in this embodiment, the dustproof rings 344 and the dustproof washers 43 are respectively disposed at the two actions of the trigger set 34 and the shift lever 41, so as to improve the tightness of this embodiment, and thus have better dustproof effect.

Referring to fig. 5, 6 and 8, the positioning spring 44 has a plurality of recesses 441 spaced apart from each other, the positioning protrusion 410 has a pushing protrusion 418 facing the turning end 413, and the pushing protrusion 418 is selectively engaged into one of the recesses 441 to position the lever 41. The positioning projection 410 and the positioning spring 44 have simple structure and convenient assembly, so the manufacturing cost is low.

Referring to fig. 8 to 10, in the present embodiment, the number of the concave portions 441 is three. As shown in fig. 8, when the positioning protrusion 410 is snapped into the middle recess 441, a rib 347 of the trigger 341 is pushed against the pulling end 412 of the pulling lever 41, so that the power tool is in a non-rotated state. As shown in fig. 9, when the pulling end 412 of the pulling lever 41 is pulled to the left, the positioning protrusion 410 is engaged with the right recess 441, and the trigger 341 and the pulling lever 41 can be pressed without being blocked, and the electric tool is in a state of being rotated forward. As shown in fig. 10, when the pulling end 412 of the pulling lever 41 is pulled to the right, the positioning protrusion 410 is engaged with the left concave portion 441, and the trigger 341 and the pulling lever 41 can be pressed without being blocked, and the electric tool is in a state of reverse rotation.

Referring to fig. 5, 11 and 12, three metal strips 311 are formed on the upper surface of the circuit board 31, two conductive strips 312 are formed on the lower surface of the circuit board 31, and the metal strips 311 are used for slidably contacting the turning spring 42 to control the rotation direction of the electric tool. The conductive band 312 is used for slidably contacting the conductive segment 361 of the conductive spring 36, so as to control the power on/off of the electric tool. The circuit board 31 has Pin1, pin2, pin3, pin4, pin5, pin6, pin7, pin1 is positive, pin2 is positive, pin3 is negative, pin4 is ground, pin5 is a connecting varistor terminal, pin6 is varistor, and Pin7 is negative.

Referring to fig. 5 and 12, when the trigger 341 is not pressed, the two conductive strips 312 are not conductive, and at this time, the switch signal of the circuit board 31 is not conductive to be output.

Referring to fig. 5 and 13, when the trigger 341 is pressed, the conductive spring plates 36 respectively contact the conductive strips 312 to make Pin1 and Pin2 mutually conductive, and make the circuit board 31 output a switching signal.

According to the invention, by gradually pressing the trigger 341, the distance between the magnetic member 372 and the hall element 371 can be reduced to change the resistance, so that the circuit board 31 outputs a change signal, and the rotation speed of the electric tool can be adjusted.

Referring to fig. 9 and 11, if the rotation direction of the electric tool is to be adjusted, the shift lever 41 is rotated to the left, and the shift lever 41 drives the steering spring 42 to rotate to the right and to conduct Pin3 and Pin5, at this time, the electric tool is in a forward rotation state.

Referring to fig. 10 and 14, conversely, the lever 41 is turned to the right, and the lever 41 drives the turning spring 42 to turn to the left, so that Pin7 and Pin5 are turned on, and at this time, the electric tool is in a state of reverse rotation.

In summary, in the trigger switch of the present invention, the pivot 411 is pivoted to the pivot slot 20, so that the lever 41 can be assembled to the housing unit 2 without screwing, and thus the durability of the trigger switch of the present invention is high. Meanwhile, the design of the deflector rod 41 which is integrally formed can improve the structural strength and prolong the service life, so that the purpose of the invention can be truly achieved.

The foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents.

Claims (7)

1. A trigger switch adapted for mounting on a power tool, comprising: the trigger switch includes:

The shell seat unit comprises a first shell seat and a second shell seat which are mutually matched, an accommodating space, a sliding hole which is communicated with the accommodating space and extends along the front-back direction and a pivoting groove which extends along the top-bottom direction are defined by the first shell seat and the second shell seat which are mutually matched, and the shell seat unit is provided with an installation part which is positioned in the accommodating space and is opposite to the sliding hole at intervals;

a control unit operably disposed in the housing unit, the control unit comprising:

A circuit board arranged in the accommodating space, the circuit board is provided with a plurality of metal strips which are positioned on the upper surface and used for controlling the rotation direction of the electric tool, and a plurality of conductive strips which are positioned on the lower surface and used for controlling the operation of the electric tool,

The conductive sliding seat set is positioned in the accommodating space and can move relative to the circuit board along the front-back direction, the conductive sliding seat set is provided with a plurality of conductive elastic sheets used for being electrically connected with the conductive wires,

The trigger set can be arranged on the shell seat unit in a pressed mode and is used for driving the conductive sliding seat set to move, and the trigger set is provided with a pushing shaft penetrating through the sliding hole and connected with the conductive sliding seat set, a reset elastic piece which can be arranged between the pushing shaft and the mounting part in a compressed mode, and

The magnetic induction group is provided with a Hall assembly electrically connected to the circuit board and a magnetic piece which is arranged opposite to the Hall assembly and moves along with the conductive sliding seat group; and

The steering unit is operably arranged on the shell seat unit and comprises a deflector rod which can be pivoted on the pivot groove and a steering spring piece which is arranged on the deflector rod and can be in spring contact with the metal belt of the circuit board, the deflector rod is integrally formed and is provided with a pivot which is pivoted on the pivot groove, the steering unit also comprises a positioning spring piece which is provided with a plurality of concave parts which are arranged at intervals, the deflector rod also is provided with a steering end for arranging the steering spring piece and a positioning convex block which is positioned between the steering end and the pivot, the positioning convex block is selectively clamped into one concave part,

The conductive sliding seat set is also provided with a sliding seat connected with the pushing shaft, the conductive elastic sheets can be arranged on the sliding seat in a sprung manner and move along with the sliding seat, each conductive elastic sheet is provided with a conducting section for being abutted against one conductive belt, two connecting sections respectively positioned on two opposite sides of the conducting section, and two inner hook sections respectively connected with the connecting sections, the inner hook Duan Xiangxiang extends, the sliding seat is provided with a plurality of mounting grooves which are positioned at the top end and are respectively provided for the conductive elastic sheets to be arranged, each mounting groove is provided with a groove bottom surface, each inner hook section of each conductive elastic sheet is accommodated in each mounting groove, and one inner hook section of each conductive elastic sheet is abutted against the corresponding groove bottom surface.

2. The trigger switch of claim 1, wherein: the conductive sliding seat group is also provided with a sliding seat connected with the pushing shaft, the conductive elastic sheet can be arranged on the sliding seat in a sprung manner, the magnetic piece is arranged on the sliding seat, and the Hall component is connected to the lower surface of the circuit board and faces the magnetic piece.

3. The trigger switch of claim 1, wherein: the pivot groove is provided with a dustproof section, and the steering unit further comprises a dustproof gasket sleeved on the pivot and accommodated in the dustproof section.

4. The trigger switch of claim 1, wherein: the trigger set also has a dust ring embedded in the sliding hole and slidably contacted by the pushing shaft.

5. The trigger switch of claim 1, wherein: the shell seat unit also surrounds and defines a glue filling chamber communicated with the accommodating space, the control unit also comprises a flat cable which is connected to the circuit board, passes through the glue filling chamber and penetrates out of the shell seat unit, and the glue filling chamber is used for filling glue so that the flat cable is positioned.

6. The trigger switch of claim 1, wherein: the first shell seat and the second shell seat are respectively provided with a sliding groove, the sliding grooves are oppositely arranged in the left-right direction, the conductive sliding seat group is provided with a sliding seat connected with the pushing shaft, the conductive elastic sheet can be arranged on the sliding seat in a spring pressing mode and move along with the sliding seat, and the sliding seat is provided with two sliding blocks which are respectively formed on the left side and the right side and can be slidably arranged on the sliding grooves.

7. The trigger switch of claim 1, wherein: the trigger group is also provided with a trigger used for pressing, the trigger and the pushing shaft are integrally formed, a caulking groove is formed at one end of the pushing shaft opposite to the trigger, the conductive sliding seat group is provided with a sliding seat connected with the pushing shaft, and the sliding seat is provided with a fillet embedded in the caulking groove.