CN113838699A

CN113838699A - Trigger switch

Info

Publication number: CN113838699A
Application number: CN202110549455.9A
Authority: CN
Inventors: 吴培正; 郭永铭
Original assignee: Excel Cell Electronic Co Ltd
Current assignee: Excel Cell Electronic Co Ltd
Priority date: 2020-06-24
Filing date: 2021-05-20
Publication date: 2021-12-24
Also published as: TW202200321A; TWI726751B

Abstract

A trigger switch includes a housing unit, a control unit, and a steering unit. The shell base unit comprises a first shell base and a second shell base which are mutually butted, and the first shell base and the second shell base are matched to define a pivot groove. The control unit comprises a circuit board, a conductive sliding seat group, a trigger 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 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 assembly and a magnetic part moving along with the conductive sliding seat group. The steering unit comprises a deflector rod which can be pivotally arranged in the pivot groove, and the deflector rod is integrally formed and is provided with a pivot which is pivotally arranged in the pivot groove and a steering elastic sheet which can be elastically contacted with the circuit board. The invention does not need screw connection, and the driving lever is designed as an integrated body, thereby improving the structural strength and prolonging the service life.

Description

Trigger switch

Technical Field

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

Background

The general electric tool uses the trigger switch and circuit design to start and stop, and control the rotation speed and adjust the rotation direction.

As shown in fig. 1 and 2, a conventional trigger switch 1 includes a housing 11, a depressible trigger 12, a pushing shaft 13 connected to the trigger 12 and penetrating the housing 11, a circuit board 14 located in the housing 11, and a steering device 15 rotatably disposed on the housing 11. One end of the push shaft 13 adjacent to the circuit board 14 is provided with a conductive elastic sheet (not shown) capable of being electrically connected with 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 that different electronic signals such as power-on, power-off, resistance change and the like can be generated, and the operation of the electric tool is controlled.

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 elastic sheet (not shown) to rotate relative to the circuit board 14 so as to generate a forward or reverse electronic signal, the rotating arm 152 is screwed on the driving arm 151 by a screw 153, and a 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 use characteristics, the screw 153 may be loosened after the steering device 15 is repeatedly turned for a certain period of time, so that the driving arm 151 and the rotating arm 152 are not firmly combined and cannot smoothly transmit torque, and thus, the durability is 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 base unit comprises a first shell base and a second shell base which are mutually closed, the first shell base and the second shell base are matched to define an accommodating space, a sliding hole which is communicated with the accommodating space and extends along the front-back direction, and a pivot groove which extends along the top-bottom direction, and the shell base unit is provided with an installation part which is positioned in the accommodating space and is opposite to the sliding hole at intervals.

The control unit is operatively disposed on the housing unit and includes a circuit board, a conductive slider group, a trigger 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 group is positioned in the accommodating space and can move relative to the circuit board along the front-back direction, and the conductive sliding seat group is provided with a plurality of conductive elastic sheets which are electrically connected with the conductive strips. 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, the trigger set is provided with a pushing shaft which penetrates through the sliding hole and is connected to the conductive sliding seat set, and a resetting elastic piece which can be arranged between the pushing shaft and the mounting portion in a compressed mode. The magnetic induction group is provided with a Hall assembly electrically connected with the circuit board and a magnetic part which is arranged opposite to the Hall assembly and moves along with the conductive sliding seat group.

The steering unit is operably arranged on the shell seat unit and comprises a shifting lever which is pivotally arranged on the pivot groove and a steering elastic sheet which is arranged on the shifting lever and can be elastically contacted with the metal belt of the circuit board, and the shifting lever is integrally formed and is provided with a pivot which is pivotally arranged on the pivot groove.

In the trigger switch, 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 springing manner, the magnetic part is arranged on the sliding seat, and the Hall assembly is connected to the lower surface of the circuit board and faces the magnetic part.

In the trigger switch, the deflector rod is also provided with a steering end for the steering elastic sheet to be arranged, and a positioning lug is positioned between the steering end and the pivot, the steering unit also comprises a positioning elastic sheet, the positioning elastic sheet is provided with a plurality of concave parts arranged at intervals, and the positioning lug is selectively clamped into one of the concave parts.

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

In the trigger switch of the present invention, the trigger unit further has a dust ring which is fitted into the slide hole and in slidable contact with the push shaft.

In the trigger switch, the shell base 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 base unit, and the glue filling chamber is used for filling glue so as to position the flat cable.

In the trigger switch, 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 springing manner and moves along with the sliding seat, each conductive elastic sheet is provided with a conduction section for abutting against one of the conductive strips, two connecting sections respectively positioned at two opposite sides of the conduction section, and two inner hook sections respectively connected with the connecting sections, and the inner hook sections extend oppositely.

In the trigger switch, 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, the inner hook section of each conductive elastic sheet is accommodated in the respective mounting groove, and one inner hook section of each conductive elastic sheet is abutted against the corresponding groove bottom surface.

In the trigger switch of the invention, 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 and right directions, 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 way and moves along with the sliding seat, and the sliding seat is provided with two sliding blocks which are respectively formed on the left and right sides and can be arranged on the sliding grooves in a sliding way.

In the trigger switch, the trigger set is also provided with a trigger for pressing, the trigger and the pushing shaft are integrally formed, an embedded groove is formed at one end of the pushing shaft opposite to the trigger, the conductive sliding seat set is provided with a sliding seat connected with the pushing shaft, and the sliding seat is provided with an embedded strip embedded in the embedded groove.

The invention has the beneficial effects that: the driving lever is pivotally arranged in the pivot groove through the pivot, the driving lever does not need to be screwed when being assembled in the shell seat unit, and the driving lever is integrally formed, so that the structural strength can be improved, the service life can be prolonged, and the durability of the driving lever is higher.

Drawings

Other features and effects of the present invention will become apparent from the following detailed description of the embodiments with reference to the accompanying 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 sectional side elevation schematic view of the embodiment;

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

FIG. 7 is a fragmentary perspective view from the bottom side toward the top side illustrating a magnetic sensing set of the control unit;

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

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

FIG. 10 is a top view similar to FIG. 9, illustrating turning the toggle lever to the right and engaging the pushing protrusion with 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 bottom surface of the circuit board and two conductive clips of a conductive slider group;

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

fig. 14 is a view similar to fig. 11 illustrating the rotation of the steering spring along the circuit board.

Detailed Description

Referring to fig. 3 and 4, the trigger switch embodiment of the present invention is adapted to be mounted on a power tool (not shown), such as a screwdriver, drill, or other tool having a rotary action. 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 direction, and comprises a shell base unit 2, a control unit 3 and a steering unit 4.

Referring to fig. 4 to 6, the housing base unit 2 includes a first housing base 21 and a second housing base 22 that are mutually coupled along a left-right direction X, the first housing base 21 and the second housing base 22 cooperate to define an accommodating space 200, a sliding hole 201 that is communicated with the accommodating space 200 and extends along a front-back 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 accommodating space 200, and a glue filling chamber 203 that is communicated with the accommodating space 200 and the outside. The sliding hole 201 has a groove 204 surrounding the entire circumference. The pivot slot 20 extends along the top-bottom direction Z and both ends of the top and bottom are 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 that of the pivot section 205, and a hollow section 207 higher than the dust-proof section 206.

In this embodiment, the first housing seat 21 has a supporting platform 211 located in the accommodating space 200, a sliding slot 212 extending along the front-back direction Y, and a mounting portion 213 adjacent to the rear end of the sliding slot 212, and the supporting platform 211 is higher than the sliding slot 212 and the mounting portion 213 and has an abutting block 214. The mounting portion 213 is located in the accommodating space 200 and is spaced from and opposite to the sliding hole 201 in the front-rear direction Y. Preferably, the mounting portion 213 is a recess. Preferably, the glue filling chamber 203 is formed in the first housing seat 21, and the glue filling chamber 203 is located below the mounting portion 213. Second housing 22 has a slide groove 221 disposed opposite to slide groove 212 of first housing 21 in left-right direction X.

The control unit 3 is operatively provided to the housing base unit 2 and serves to control the operation of the electric power tool. The control unit 3 includes a circuit board 31, a flat cable 32, a conductive slider group 33, a trigger group 34, and a magnetic induction group 37. The circuit board 31 is disposed in the accommodating space 200 and fixed to the bottom side of the supporting platform 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 filling chamber 203 and penetrates out of the housing unit 2, and the glue filling chamber 203 is filled with glue so that the flat cable 32 can be positioned and the flat cable 32 is prevented from falling off or breaking due to pulling of external force.

Referring to fig. 5 to 7, the conductive slider group 33 is slidably disposed in the accommodating space 200 and is movable relative to the circuit board 31 along the front-back direction Y, the conductive slider group 33 has a slider 35 and two conductive elastic pieces 36 resiliently disposed on the slider 35 and contacting the lower surface of the circuit board 31, and the conductive elastic pieces 36 move along with the slider 35. The sliding seat 35 has a front and rear open groove 350 with an open top, two mounting grooves 351 adjacent to the groove 350 and located at the top for the conductive elastic sheet 36 to be disposed, two sliders 352 formed at the left and right sides and slidably disposed in the

sliding grooves

212 and 221, a shaft passage 353 passing through the front and rear and located between the sliders 352, and a fillet 354 surrounding the shaft passage 353. Each mounting slot 351 has a slot bottom 355, an upper opening 356 spaced opposite the respective slot bottom 355, and a front opening 357 communicating with the upper opening 356. Each conductive elastic piece 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 section 361 is located above the respective upper opening 356. The inner hooking sections 363 extend in opposite directions and are received in the respective mounting slots 351, wherein one of the inner hooking sections 363 is lower than the other inner hooking section 363 and abuts against the corresponding slot bottom 355, and preferably, the conductive elastic pieces 36 are integrally connected to each other to be conducted with each other. The inner hooking section 363 of each conductive elastic sheet 36 is accommodated in the corresponding mounting groove 351, and one of the inner hooking sections 363 abuts against the corresponding groove bottom surface 355, so that the contact stability of each conductive elastic sheet 36 and the circuit board 31 can be improved, and the problem of signal interruption caused by vibration generated by high-speed rotation of the electric tool can be avoided.

The trigger assembly 34 is disposed on the housing unit 2 in a pressing manner and is used for driving the conductive slider group 33 to move, and the trigger assembly 34 has a trigger 341 for pressing, a pushing shaft 342 connecting the trigger 341 and the conductive slider group 33, a return elastic member 343 disposed between the pushing shaft 342 and the mounting portion 213 in a compression manner, and a dust 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-arc-shaped insertion groove 345 is formed on the outer circumferential surface of the push shaft 342, and the insertion groove 345 is disposed at an end opposite to the trigger 341 and is used for inserting the insertion strip 354 of the sliding seat 35, so that the sliding seat 35 can be stably assembled to the push shaft 342. The elastic reset member 343 is a compression spring, preferably, a recessed annular groove 346 is formed on an end surface of the pushing shaft 342 facing the mounting portion 213, one end of the elastic reset member 343 is received in the annular groove 346, and the other end of the elastic reset member 343 pushes against the mounting portion 213, when the trigger 341 is pressed to link the pushing shaft 342 to drive the conductive slider group 33 to move toward the mounting portion 213, the elastic reset member 343 is pressed to generate a potential energy that constantly resets the pushing shaft 342. The dust ring 344 is inserted into the groove 204 of the sliding hole 201 and positioned in the sliding hole 201, the pushing shaft 342 is slidably contacted with the dust ring 344, the dust ring 344 has a dust-proof function of preventing dust and foreign matters from entering the sliding hole 201, and the design of the dust ring 344 being embedded in the sliding hole 201 can reduce the resistance of the trigger unit 34 during actuation and allow a user to easily press the trigger unit, so the operation feeling of the embodiment is better.

The magnetic sensing assembly 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 assembly 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 member 372 may be disposed at other positions, as long as the magnetic member 372 is movable relative to the hall element 371.

Referring to fig. 3 to 5, the steering unit 4 is operably disposed on the housing base unit 2, and the steering unit 4 includes a shift lever 41, a steering spring 42, a dust-proof washer 43, and a positioning spring 44. The shift lever 41 is pivotally disposed on the pivot slot 20, and the shift lever 41 has a pivot 411 pivotally disposed on the pivot slot 20, a reverse shift end 412 and a turning end 413, and a positioning protrusion 410 located 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 shift lever 41 is integrally formed, so that the structural strength is better. The toggle end 412 is used for a user to toggle so that the toggle rod 41 can rotate around the pivot 411 relative to the pivot slot 20.

The turning elastic piece 42 is disposed at a bottom side of the turning end 413 of the shift lever 41 and can be elastically contacted with an upper surface of the circuit board 31, and the turning elastic piece 42 is formed with two contacts for electrically connecting with the circuit board 31 to control a rotating direction of the electric tool. The dust-proof washer 43 is sleeved on the pivot 411 and received in the dust-proof section 206 of the pivot slot 20, thereby having a dust-proof function, it should be noted that the dust-proof washer 43 is stretchable due to its elasticity, and therefore, the dust-proof washer 43 is sleeved on the toggle end 412 of the toggle lever 41 and moves toward the pivot 411 to achieve a positioning. The positioning elastic sheet 44 is disposed on the supporting platform 211 and located between the abutting block 214 and the positioning protrusion 410.

In the present invention, the pivot shaft 411 is pivotably disposed in the pivot groove 20, and the shift lever 41 is assembled to the housing base unit 2 by aligning the first housing base 21 and the second housing base 22 with each other, so that a screw connection is not required. Meanwhile, the driving lever 41 is integrally formed, so that the structural strength can be improved, and the service life can be prolonged, therefore, the driving lever is high in durability.

It should be noted that, in the present embodiment, the dust-proof ring 344 and the dust-proof washer 43 are respectively disposed at the two actuating positions of the trigger set 34 and the shift lever 41, so as to improve the sealing performance of the present embodiment and have a better dust-proof effect.

Referring to fig. 5, 6 and 8, the positioning elastic sheet 44 has a plurality of recesses 441 spaced apart from each other, the positioning protrusion 410 has an abutting protrusion 418 facing the turning end 413, and the abutting protrusion 418 is selectively snapped into one of the recesses 441 to position the shift lever 41. The positioning protrusion 410 and the positioning elastic sheet 44 have simple structure and convenient assembly, and therefore, the manufacturing cost is low.

Referring to fig. 8 to 10, in the present embodiment, the number of the recesses 441 is three. As shown in fig. 8, when the positioning protrusion 410 is inserted into the middle recess 441, a rib 347 of the trigger 341 abuts against the toggle end 412 of the toggle lever 41 and cannot be pressed, so that the electric tool is in a non-rotating state. As shown in fig. 9, when the dial end 412 of the dial 41 is dialed to the left, the positioning protrusion 410 is engaged with the right recess 441, and the trigger 341 and the dial 41 can be pressed without any obstacle, so that the electric tool is in a state of forward rotation. As shown in fig. 10, when the dial end 412 of the dial 41 is dialed to the right, the positioning protrusion 410 is engaged with the left recess 441, the trigger 341 and the dial 41 can be pressed without any interference, and the electric tool is in a state of reverse rotation.

Referring to fig. 5, 11 and 12, the upper surface of the circuit board 31 is formed with three metal strips 311, the lower surface of the circuit board 31 is formed with two conductive strips 312, and the metal strips 311 are used for the steering spring 42 to slidably contact and control the rotation direction of the electric power tool. The conductive strip 312 is used for the conductive section 361 of the conductive elastic sheet 36 to slidably contact, so as to control the power on/off of the electric tool. The circuit board 31 includes Pin1, Pin2, Pin3, Pin4, Pin5, Pin6, and Pin7, where Pin1 is a positive electrode, Pin2 is a positive rotation, Pin3 is a reverse rotation, Pin4 is a ground, Pin5 is a connection variable resistor terminal, Pin6 is a variable resistor, and Pin7 is a negative electrode.

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

Referring to fig. 5 and 13, when the trigger 341 is pressed, the conductive elastic pieces 36 respectively contact the conductive strips 312 to make Pin1 and Pin2 conduct with each other, and the circuit board 31 outputs 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 rotating speed of the electric tool is further adjusted.

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

Referring to fig. 10 and fig. 14, conversely, when the shift lever 41 is rotated to the right, the shift lever 41 drives the steering spring 42 to rotate to the left, so that the Pin7 is conducted with the Pin5, 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 shaft 411 is pivoted to the pivot slot 20, so that the shift lever 41 can be assembled to the housing unit 2 without screwing, and thus the durability of the trigger switch is high. Meanwhile, the driving lever 41 is designed to be integrally formed, so that the structural strength can be improved, the service life can be prolonged, and the purpose of the invention can be really achieved.

The above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and the invention is still within the scope of the present invention by simple equivalent changes and modifications made according to the claims and the contents of the specification.

Claims

1. A trigger switch adapted to be mounted on an electric power tool, comprising: the trigger switch includes:

the shell base unit comprises a first shell base and a second shell base which are mutually closed, the first shell base and the second shell base are matched to define an accommodating space, a sliding hole which is communicated with the accommodating space and extends along the front-back direction, and a pivot groove which extends along the top-bottom direction, and the shell base 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 operatively disposed to the housing base unit, the control unit comprising:

a circuit board disposed in the accommodating space, the circuit board having a plurality of metal strips on an upper surface thereof for controlling a rotation direction of the electric tool and a plurality of conductive strips on a lower surface thereof for controlling an operation of the electric tool,

a conductive sliding seat group which is positioned in the accommodating space and can move relative to the circuit board along the front and back directions, the conductive sliding seat group is provided with a plurality of conductive elastic sheets which are used for being electrically connected with the conductive strips,

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

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

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 spring pressing mode, the magnetic part is arranged on the sliding seat, and the Hall assembly is connected to the lower surface of the circuit board and faces the magnetic part.

3. The trigger switch of claim 1, wherein: the deflector rod is also provided with a steering end for the steering elastic sheet to be arranged, and a positioning lug which is positioned between the steering end and the pivot shaft, the steering unit further comprises a positioning elastic sheet, the positioning elastic sheet is provided with a plurality of concave parts which are arranged at intervals, and the positioning lug is selectively clamped into one of the concave parts.

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

5. The trigger switch of claim 1, wherein: the trigger set is also provided with a dustproof ring which is embedded into the sliding hole and is provided for the pushing shaft to be in sliding contact with.

6. The trigger switch of claim 1, wherein: the shell base unit further defines a glue filling chamber communicated with the accommodating space in a surrounding mode, the control unit further comprises a flat cable connected to the circuit board and penetrating out of the shell base unit through the glue filling chamber, and the glue filling chamber is used for filling glue so that the flat cable can be positioned.

7. 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 spring pressing manner and moves along with the sliding seat, each conductive elastic sheet is provided with a conduction section for abutting against one of the conductive strips, two connecting sections respectively positioned at two opposite sides of the conduction section, and two inner hook sections respectively connected with the connecting sections, and the inner hook sections extend oppositely.

8. The trigger switch of claim 7, wherein: 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, the inner hooking section of each conductive elastic sheet is accommodated in the respective mounting groove, and one inner hooking section of each conductive elastic sheet abuts against the corresponding groove bottom surface.

9. 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 and right directions, 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 manner and moves 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 in the sliding grooves in a sliding manner.

10. The trigger switch of claim 1, wherein: the trigger set is further provided with a trigger used for pressing, the trigger and the pushing shaft are integrally formed, an embedding groove is formed in one end, opposite to the trigger, of the pushing shaft, the conductive sliding seat set is provided with a sliding seat connected to the pushing shaft, and the sliding seat is provided with an embedding strip embedded into the embedding groove.