Momentary action trigger switch

Abstract

The present disclosure provides a trigger switch with instantaneous action. The trigger switch includes a base body, an upper cover, a push shaft, a trigger connected to the base body, and a trigger spring arranged between the trigger and the upper cover; one end of the push shaft is arranged in a box body formed by the base body and the upper cover, and the other end extends out of the box body; an anti-lock button assembly is arranged between the trigger and the upper cover, one end of the anti-lock button assembly leans against the upper cover, and the other end extends out of the trigger; one end of the push shaft arranged in the box body is provided with a push shaft slider, a moving contact slider is arranged below the push shaft slider, a middle shaft assembly is arranged between the push shaft slider and the moving contact slider, one end of the middle shaft assembly is connected to the push shaft slider, and the other end is connected to the moving contact slider; a moving contact assembly is arranged on the moving contact slider, and a static contact assembly matched with the moving contact assembly is arranged on the base body. When the switch disclosed in the present disclosure is just turned on, the contact pressure of the contact point is relatively large, and the contact pressure will not change with the change of the switch stroke. When a large current passes through the switch, it will not cause the silver contacts of the switch to stick, and at the same time, such a structure enables the switch to act instantly.

Description

Technical Field

[0001] The present disclosure relates to a trigger switch, and more particularly to a momentary-action trigger switch. Background Art

[0002] The functions of such trigger switches currently on the market are basically similar, but they have the following functional defects:

[0003] 1. The commonly used trigger switch of this type is generally a spring structure. The action of switching on and off is not instantaneous. Therefore, the contact pressure is small when the switch is just turned on. If a large current passes through the switch at this time, it will cause the silver contacts of the switch to stick. In severe cases, the power tool cannot be disconnected. It does not meet the GB15092.1 standard and poses a major safety hazard to human life.

[0004] 2. The commonly used trigger switch of this type is generally a spring structure. The size of the spring is not easy to control, and the switch often has a poor feel, resulting in poor connection and disconnection. In severe cases, it may cause the power tool to burn or even cause a fire. It also does not comply with the GB15092.1 standard and poses a major safety hazard to human life.

[0005] For this reason, it is imperative to design a trigger switch with instantaneous action. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a trigger switch with instantaneous action.

[0007] The instantaneous trigger switch provided by the present disclosure comprises a base body, an upper cover, a push shaft, a trigger connected to the base body, and a trigger spring arranged between the trigger and the upper cover;

[0008] One end of the push shaft is arranged in the box body formed by the base body and the upper cover, and the other end extends out of the box body;

[0009] A reverse locking button assembly is provided between the trigger and the upper cover, one end of the reverse locking button assembly rests against the upper cover, and the other end extends out of the trigger;

[0010] A push shaft slider is arranged at one end of the push shaft disposed in the box body, a moving contact slider is arranged below the push shaft slider, a middle shaft assembly is arranged between the push shaft slider and the moving contact slider, one end of the middle shaft assembly is connected to the push shaft slider, and the other end is connected to the moving contact slider;

[0011] The moving contact slider is provided with a moving contact assembly, and the base body is provided with a stationary contact assembly matched with the moving contact assembly.

[0012] The instantaneous trigger switch provided by the present disclosure also includes the following technical solutions:

[0013] Wherein, the trigger switch also includes a self-locking button assembly;

[0014] The self-locking button assembly includes a self-locking button, a self-locking button shaft, and a self-locking button spring arranged on the self-locking button shaft;

[0015] The self-locking button is provided with a self-locking button hole, the trigger is provided with a first through hole, one end of the self-locking button shaft is provided in the self-locking button hole, and the other end of the self-locking button shaft passes through the first through hole to movably connect the self-locking button to the trigger.

[0016] Wherein, the anti-lock button assembly includes an anti-lock button, an anti-lock button shaft, and a lock button spring;

[0017] The trigger is provided with a second through hole, the anti-lock button is provided with a third through hole, and the anti-lock button shaft passes through the second through hole and the third through hole in sequence to movably connect the anti-lock button to the trigger;

[0018] One end of the lock button spring abuts against the anti-lock button, and the other end abuts against the trigger.

[0019] Wherein, the middle shaft assembly includes an outer middle shaft, an inner middle shaft, and a middle shaft spring;

[0020] The outer middle shaft is provided with an outer middle shaft hole, one end of the inner middle shaft is installed in the outer middle shaft hole; the middle shaft spring is provided on the outer middle shaft;

[0021] The other end of the outer central axis is provided with a first slot, in which a first connecting rod is provided; the other end of the inner central axis is provided with a second slot, in which a second connecting rod is provided;

[0022] A third slot is provided at the bottom of the push shaft slider, and the two ends of the first connecting rod are respectively engaged in the third slot; a fourth slot is provided at the top of the moving contact slider, and the two ends of the second connecting rod are respectively engaged in the fourth slot.

[0023] The outer middle shaft hole is provided with a guide groove, and one end of the inner middle shaft installed in the outer middle shaft hole is provided with a barb, and the barb can be hooked in the guide groove, so that the middle shaft spring is fixed between the inner middle shaft and the outer middle shaft.

[0024] The moving contact assembly comprises two groups of moving contacts, two groups of moving contact springs, and moving contact points respectively arranged on the two groups of moving contacts; the stationary contact assembly comprises two groups of stationary contact feet, and stationary contact points respectively arranged on the two groups of stationary contact feet;

[0025] The bottom of the moving contact slider is provided with two clamping grooves, and the two groups of moving contacts are respectively clamped in the clamping grooves; the bottom of the base body is provided with two groups of clamping holes, and the two groups of stationary contact feet are respectively clamped in the clamping holes.

[0026] Wherein, the trigger switch further includes a first metal sheet and a second metal sheet;

[0027] The first metal sheet is arranged between the push shaft slider and the upper cover, and the second metal sheet is arranged between the moving contact slider and the base body.

[0028] Among them, a fourth through hole is provided on the trigger, and a fifth through hole is provided on one end of the push shaft extending out of the box body, and the first fastener passes through the fourth through hole and the fifth through hole in sequence to movably connect the push shaft to the trigger.

[0029] Wherein, the trigger switch further includes a dust cover;

[0030] The base body is provided with a base body groove, and the dust cover is arranged on the base body groove;

[0031] A return spring is arranged on the push shaft.

[0032] Wherein, the trigger comprises a trigger bracket and a trigger pressing member;

[0033] The trigger bracket is provided with a sixth through hole, the trigger pressing piece is provided with a seventh through hole, and the second fastener passes through the sixth through hole and the seventh through hole in sequence to movably connect the trigger pressing piece to the trigger bracket.

[0034] Wherein, an eighth through hole is provided on the upper cover, and the second fastener passes through the sixth through hole and the eighth through hole in sequence to connect the trigger to the upper cover.

[0035] The implementation of this disclosure includes the following technical effects:

[0036] 1. The instantaneous trigger switch disclosed in the present invention has an instantaneous action structure, so that the contact pressure of the contacts is relatively large when the switch is just turned on, and the contact pressure does not change with the change of the switch stroke. When a large current passes through the switch, it will not cause the silver contacts of the switch to stick. At the same time, such a structure can make the switch act instantly.

[0037] 2. The disclosed invention has a novel structure and a simple process, and is suitable for large electric tools such as AC and DC angle grinders, profile cutting machines, aluminum cutting machines, electric hammers, electric picks, etc., and complies with national safety standards.

[0038] 3. The present invention provides a first metal slide between the slider and the upper cover, and utilizes the high smoothness of the slide surface to convert the friction between the plastics between the slider and the upper cover into the friction between the plastics between the slider and the metal slide, so as to reduce the friction coefficient and increase the agility of the slider to move left and right; provides a second metal slide between the moving contact slider and the base body, so as to convert the friction between the plastics between the moving contact slider and the plastic base body into the friction between the plastics between the moving contact slider and the metal slide, and utilizes the high smoothness of the slide surface to further reduce the friction coefficient, increase the agility of the moving contact slider to move left and right, and make the switch have instantaneous action. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a perspective view of a momentary action trigger switch of the present disclosure;

[0040] Figure 2 for Figure 1 A partial cross-sectional view of the trigger area when the switch is disconnected.

[0041] Figure 3 for Figure 1 A partial cross-sectional view of the contacts when the switch is open.

[0042] Figure 4 for Figure 1 A partial cross-sectional view of the trigger area when the switch is closed.

[0043] Figure 5 for Figure 1 A partial cross-sectional view of the contacts when the switch is closed.

[0044] Figure 6 It is a schematic diagram of the exploded structure of the instantaneous action trigger switch disclosed in the present invention;

[0045] Figure 7 It is a schematic diagram of the assembly structure of the moving contact slider assembly of the momentary action trigger switch disclosed in the present invention.

[0046] Figure 8 It is a schematic diagram of the push shaft assembly structure of the momentary action trigger switch disclosed in the present invention.

[0047] Fig. 9 The present invention is a schematic diagram of the assembly structure of the push shaft and the moving contact slider assembly of the instantaneous action trigger switch disclosed in the present invention, which includes a central shaft assembly.

[0048] Fig.10 It is a schematic diagram of the assembly structure of the base assembly of the momentary-action trigger switch of the present invention.

[0049] Fig.11 It is an assembly diagram of the upper cover assembly of the momentary action trigger switch of the present disclosure.

[0050] In the figure, 1-base body, 2-upper cover, 3-push shaft, 4-trigger, 5-anti-lock button assembly, 6-push shaft slider, 7-moving contact slider, 8-middle shaft assembly, 9-moving contact assembly, 10-static contact assembly, 11-self-locking button assembly, 12-first connecting rod, 13-second connecting rod, 14-first metal sheet, 15-second metal sheet, 16-first fastener, 17-dust cover, 18-reset spring, 19-second fastener, 101-clamping hole, 102-base body groove, 21-eighth through hole, 111-self-locking button, 112-self-locking button shaft, 113-self-locking button spring, 1111-self-locking button hole, 31-fifth through hole, 41-first through hole, 42-second through hole, 43-fourth through hole, 44-trigger bracket, 45-trigger pressing piece, 46-trigger spring, 441-sixth through hole, 451-seventh through hole, 51-anti-lock button, 52-anti-lock button shaft, 53-lock button spring, 511-third through hole, 61-third slot, 71-fourth slot, 72-connecting slot, 81-outer center axis, 82-inner center axis, 83-center axis spring, 812-first slot, 821-second slot, 91-moving contact, 92-moving contact spring, 911-moving contact, 1001-stationary contact foot, 10011-stationary contact. DETAILED DESCRIPTION

[0051] The present disclosure will be described in detail below in conjunction with the embodiments and drawings. It should be noted that the embodiments described are only intended to facilitate the understanding of the present disclosure and do not have any limiting effect on it. The directions described in this application, such as up, down, left, and right, are used for the convenience of describing with reference to the drawings and do not constitute a limitation on the scope of protection.

[0052] The present disclosure provides a trigger switch with instantaneous action, such as Figure 1-6 , as shown in 11, it includes a base body 1, an upper cover 2, a push shaft 3, a trigger 4 connected to the base body 1, and a trigger spring 46 arranged between the trigger 4 and the upper cover 2;

[0053] One end of the push shaft is arranged in the box body formed by the base body 1 and the upper cover 2, and the other end extends out of the box body;

[0054] A reverse locking button assembly 5 is provided between the trigger 4 and the upper cover 2, one end of the reverse locking button assembly 5 rests on the upper cover 2, and the other end extends out of the trigger 4;

[0055] The push shaft 3 is provided with a push shaft slider 6 at one end of the box body, a moving contact slider 7 is provided below the push shaft slider 6, a middle shaft assembly 8 is provided between the push shaft slider 6 and the moving contact slider 7, one end of the middle shaft assembly 8 is connected to the push shaft slider 6, and the other end is connected to the moving contact slider 7;

[0056] The moving contact slider 7 is provided with a moving contact assembly 9 , and the base body 1 is provided with a stationary contact assembly 10 matched with the moving contact assembly 9 .

[0057] The instantaneous action trigger switch disclosed in the present invention has an instantaneous action structure, so that the contact pressure of the contact is relatively large when the switch is just turned on. When a large current passes through the switch, the silver contacts of the switch will not stick together, so that the switch can be quickly disconnected. In addition, the present invention has a novel structure and a simple process, and is suitable for large electric tools such as AC and DC angle grinders, profile cutting machines, aluminum cutting machines, electric hammers, electric picks, etc., and meets national safety standards.

[0058] In one embodiment, Figure 6 , 11 As shown, the trigger switch also includes a self-locking button assembly 11;

[0059] The self-locking button assembly 11 includes a self-locking button 111, a self-locking button shaft 112, and a self-locking button spring 113 disposed on the self-locking button shaft 112;

[0060] The self-locking button 111 is provided with a self-locking button hole 1111 , the trigger 4 is provided with a first through hole 41 , one end of the self-locking button shaft 112 is provided in the self-locking button hole 1111 , and the other end passes through the first through hole 41 to movably connect the self-locking button 111 to the trigger 4 .

[0061] In one embodiment, Figure 6 As shown, the anti-lock button assembly 5 includes an anti-lock button 51, an anti-lock button shaft 52, and a lock button spring 53;

[0062] The trigger 4 is provided with a second through hole 42, the anti-lock button 51 is provided with a third through hole 511, and the anti-lock button shaft 52 passes through the second through hole 42 and the third through hole 511 in sequence to flexibly connect the anti-lock button 51 to the trigger 4;

[0063] One end of the lock button spring 53 abuts against the anti-lock button 51 , and the other end abuts against the trigger 4 .

[0064] In one embodiment, Figure 6 , 7 As shown in , 9, the middle shaft assembly 8 includes an outer middle shaft 81, an inner middle shaft 82, and a middle shaft spring 83;

[0065] The outer middle shaft 81 is provided with an outer middle shaft hole, and one end of the inner middle shaft 82 is installed in the outer middle shaft hole; the middle shaft spring 83 is provided on the outer middle shaft 81;

[0066] The other end of the outer central axis 81 is provided with a first slot 812, in which the first connecting rod 12 is arranged; the other end of the inner central axis 82 is provided with a second slot 821, in which the second connecting rod 13 is arranged;

[0067] A third slot 61 is provided at the bottom of the push shaft slider 6, and the two ends of the first connecting rod 12 are respectively engaged in the third slot 61; a fourth slot 71 is provided at the top of the moving contact slider 7, and the two ends of the second connecting rod 13 are respectively engaged in the fourth slot 71.

[0068] Preferably, a guide groove is provided in the outer center axis hole, and a barb is provided on one end of the inner center axis 82 installed in the outer center axis hole, and the barb can be hooked in the guide groove so that the center axis spring 83 is fixed between the inner center axis 82 and the outer center axis 81.

[0069] In one embodiment, Figure 6 , 7 As shown in , 10, the moving contact assembly 9 includes two groups of moving contacts 91, two groups of moving contact springs 92, and moving contacts 911 respectively arranged on the two groups of moving contacts 91; the stationary contact assembly 10 includes two groups of stationary contact feet 1001, and stationary contacts 10011 respectively arranged on the two groups of stationary contact feet 1001;

[0070] Two clamping grooves 72 are provided at the bottom of the moving contact slider 7, and the two groups of moving contacts 91 are respectively clamped in the clamping grooves 72; two groups of clamping holes 101 are provided at the bottom of the base body 1, and the two groups of stationary contact feet 1001 are respectively clamped in the clamping holes 101 through screws 30.

[0071] Alternatively, if Figure 6 As shown, the trigger switch further includes a first metal sheet 14;

[0072] The first metal sheet 14 is disposed between the push-shaft slider 6 and the upper cover 2 .

[0073] In this embodiment, a first metal sliding sheet is arranged between the slider and the upper cover, and the high smoothness of the sliding sheet surface is used to convert the friction between the plastic and the plastic between the slider and the upper cover into the friction between the plastic and the metal between the slider and the metal sliding sheet, so as to reduce the friction coefficient and increase the agility of the slider to move left and right.

[0074] Alternatively, if Figure 6 As shown, the trigger switch further includes a second metal sheet 15;

[0075] The second metal sheet 15 is disposed between the moving contact slider 7 and the base body 1 .

[0076] In this embodiment, a second metal slide is arranged between the moving contact slider and the base body to convert the plastic-to-plastic friction between the moving contact slider and the plastic base body into the plastic-to-metal friction between the moving contact slider and the metal slide, and the high smoothness of the slide surface is used to further reduce the friction coefficient, thereby increasing the agility of the moving contact slider in moving left and right.

[0077] In one embodiment, Figure 6 As shown, the trigger 4 is provided with a fourth through hole 43, and one end of the push shaft 3 extending out of the box body is provided with a fifth through hole 31, and the first fastener 16 passes through the fourth through hole 43 and the fifth through hole 31 in sequence to movably connect the push shaft 3 to the trigger.

[0078] In one embodiment, Figure 6 , 8 As shown, the trigger switch also includes a dust cover 17;

[0079] The base body 1 is provided with a base body groove 102, and the dust cover 17 is provided on the base body groove 102;

[0080] A return spring 18 is arranged on the push shaft 3 .

[0081] In one embodiment, Figure 6 As shown, the trigger 4 includes a trigger bracket 44 and a trigger pressing member 45;

[0082] The trigger bracket 44 is provided with a sixth through hole 441 , the trigger pressing member 45 is provided with a seventh through hole 451 , and the second fastener 19 passes through the sixth through hole 441 and the seventh through hole 451 in sequence to movably connect the trigger pressing member 45 to the trigger bracket 44 .

[0083] Optionally, the second fastener 19 is a pin.

[0084] In one embodiment, Figure 6 As shown, the upper cover is provided with an eighth through hole 21 , and the second fastener 19 passes through the sixth through hole 441 and the eighth through hole 21 in sequence to connect the trigger 4 to the upper cover 2 .

[0085] The instantaneous action trigger switch provided by the present disclosure has the function of, when the trigger 4 is pressed, the lower end of the anti-lock button 51 presses against the upper part of the upper cover 2, and by utilizing the principle of greater vertical force, a compressive strength of more than 200N can be achieved so that the trigger cannot be pressed, thereby realizing the function of switch disconnection and locking, i.e., anti-self-locking.

[0086] The present disclosure provides a trigger switch with a momentary action, and its working process is as follows:

[0087] First, push the anti-lock button 51 to the left, and then press the trigger 4. The anti-lock button 51 rotates clockwise, and its lower end rotates and disengages from the upper cover 2. At this time, the trigger pressing member 45 can be pressed smoothly. The trigger pressing member 45 rotates clockwise around the second fastener 19, and the trigger bracket 44 drives the first fastener 16, and then drives the assembly consisting of the push shaft 3 and the push shaft slider 6 to slide to the left. The push shaft slider 6 drives the middle shaft assembly 8 consisting of the outer middle shaft 81, the inner middle shaft 82 and the middle shaft spring 23 to twist through the first connecting rod 12. When a certain critical stroke is reached, the moving contact slider 7, and the moving contact assembly 9 consisting of the moving contact 91 and the moving contact 911 thereon, and the moving contact spring 92 are driven to slide quickly to the right under the action of the middle shaft spring 83. The sliding speed is very fast, close to instantaneous action, so that the four moving contacts are respectively in contact with the four static contacts 10011 riveted on the static contact feet 1001, so that the switch is turned on.

[0088] Continue to press the trigger 4 to the bottom, then press the self-locking button 111, the self-locking button 111 drives the self-locking button shaft 112 to extend into the first through hole 41 on the trigger 4, release the trigger 4, the first through hole 41 is hooked by the large head of the self-locking button shaft 112, and the closed locking of the switch is realized, that is, the self-locking function.

[0089] Press the trigger to the bottom again, the self-locking button assembly is reset under the action of the self-locking button spring 113, and the self-locking button shaft 112 is disengaged from the first through hole 41. When the trigger 4 is released at this time, the trigger 4 flips upward under the action of the trigger spring 46, and the trigger bracket 44 drives the second fastener 19, and then drives the assembly consisting of the push shaft 3 and the push shaft slider 6 to slide to the right. At the same time, the push shaft 3 slides to the right under the action of the reset spring 18, and the push shaft slider 6 drives the middle shaft assembly 8 driven by the second connecting rod 13 to twist. When a certain critical stroke is reached, the moving contact slider 7, the moving contact 91 and the moving contact 91 and the moving contact spring 92 thereon are driven to slide quickly to the left under the action of the middle shaft spring 83, so that the four moving contacts are respectively disengaged from the four static contacts 10011 riveted on the static contact feet 1001, so that the switch is disconnected.

[0090] Continue to release the trigger 4, the anti-lock button 51 rotates counterclockwise under the twisting of the lock button spring 53, and the lower end of the anti-lock button 51 rotates and contacts the top of the upper cover 2 again, and the switch resumes the disconnection and locking function.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure, rather than to limit the protection scope of the present disclosure. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present disclosure.

Claims

1. A trigger switch with a momentary action, characterized in that the trigger switch comprises a base body, an upper cover, a push shaft, a trigger connected to the base body, and a trigger spring arranged between the trigger and the upper cover; One end of the push shaft is arranged in the box body formed by the base body and the upper cover, and the other end extends out of the box body; A reverse locking button assembly is provided between the trigger and the upper cover, one end of the reverse locking button assembly rests on the upper cover, and the other end extends out of the trigger; A push shaft slider is arranged at one end of the push shaft disposed in the box body, a moving contact slider is arranged below the push shaft slider, a middle shaft assembly is arranged between the push shaft slider and the moving contact slider, one end of the middle shaft assembly is connected to the push shaft slider, and the other end is connected to the moving contact slider; The moving contact slider is provided with a moving contact assembly, and the base body is provided with a stationary contact assembly matched with the moving contact assembly; The middle shaft assembly includes an outer middle shaft, an inner middle shaft, and a middle shaft spring; The outer middle shaft is provided with an outer middle shaft hole, one end of the inner middle shaft is installed in the outer middle shaft hole; the middle shaft spring is provided on the outer middle shaft; The other end of the outer central axis is provided with a first slot, in which a first connecting rod is provided; the other end of the inner central axis is provided with a second slot, in which a second connecting rod is provided; A third slot is provided at the bottom of the push shaft slider, and the two ends of the first connecting rod are respectively engaged in the third slot; a fourth slot is provided at the top of the moving contact slider, and the two ends of the second connecting rod are respectively engaged in the fourth slot.

2. The trigger switch according to claim 1, characterized in that: The trigger switch also includes a self-locking button assembly; The self-locking button assembly includes a self-locking button, a self-locking button shaft, and a self-locking button spring arranged on the self-locking button shaft; The self-locking button is provided with a self-locking button hole, the trigger is provided with a first through hole, one end of the self-locking button shaft is provided in the self-locking button hole, and the other end passes through the first through hole to movably connect the self-locking button to the trigger.

3. The trigger switch according to claim 1 or 2, characterized in that: The anti-lock button assembly includes an anti-lock button, an anti-lock button shaft, and a lock button spring; The trigger is provided with a second through hole, the anti-lock button is provided with a third through hole, and the anti-lock button shaft passes through the second through hole and the third through hole in sequence to movably connect the anti-lock button to the trigger; One end of the lock button spring abuts against the anti-lock button, and the other end abuts against the trigger.

4. The trigger switch according to claim 1, characterized in that: A guide groove is arranged in the outer center shaft hole, and a barb is arranged on one end of the inner center shaft installed in the outer center shaft hole. The barb can be hooked in the guide groove so that the center shaft spring is fixed between the inner center shaft and the outer center shaft.

5. The trigger switch according to claim 1 or 2, characterized in that: The moving contact assembly includes two groups of moving contacts, two groups of moving contact springs, and moving contact points respectively arranged on the two groups of moving contacts; the stationary contact assembly includes two groups of stationary contact feet, and stationary contact points respectively arranged on the two groups of stationary contact feet; The bottom of the moving contact slider is provided with two clamping grooves, and the two groups of moving contacts are respectively clamped in the clamping grooves; the bottom of the base body is provided with two groups of clamping holes, and the two groups of stationary contact feet are respectively clamped in the clamping holes.

6. The trigger switch according to claim 1 or 2, characterized in that: The trigger switch further includes a first metal sheet and a second metal sheet; The first metal sheet is arranged between the push shaft slider and the upper cover, and the second metal sheet is arranged between the moving contact slider and the base body.

7. The trigger switch according to claim 1 or 2, characterized in that: The trigger is provided with a fourth through hole, and one end of the push shaft extending out of the box body is provided with a fifth through hole. The first fastener passes through the fourth through hole and the fifth through hole in sequence to movably connect the push shaft to the trigger.

8. The trigger switch according to claim 1 or 2, characterized in that: The trigger switch also includes a dust cover; The base body is provided with a base body groove, and the dust cover is arranged on the base body groove; A return spring is arranged on the push shaft.

9. The trigger switch according to claim 1 or 2, characterized in that: The trigger includes a trigger bracket and a trigger pressing member; The trigger bracket is provided with a sixth through hole, the trigger pressing piece is provided with a seventh through hole, and the second fastener passes through the sixth through hole and the seventh through hole in sequence to movably connect the trigger pressing piece to the trigger bracket.

10. The trigger switch according to claim 9, characterized in that: The upper cover is provided with an eighth through hole, and the second fastener passes through the sixth through hole and the eighth through hole in sequence to connect the trigger to the upper cover.

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