Long-travel trigger switch with momentary action

Abstract

The present disclosure provides a long-stroke trigger switch with a momentary action structure, comprising a base body, an upper cover, and a push shaft; one end of the push shaft is disposed within a housing formed by the base body and the upper cover, and the other end extends out of the housing; a trigger is provided at the end of the push shaft extending out of the housing, a button and a button spring are provided between the trigger and the housing; a return spring is provided on the portion of the push shaft disposed within the housing; a push shaft insert is provided at one end of the push shaft disposed within the housing, a moving contact assembly and a terminal assembly cooperating with the moving contact assembly are provided below the push shaft insert, a central axis assembly is provided between the moving contact assembly and the push shaft insert, one end of the central axis assembly is connected to the moving contact assembly, and the other end is connected to the push shaft; the moving contact assembly and the terminal are both disposed on the base body. The switch disclosed herein has a momentary action structure, resulting in a relatively high contact pressure when the switch is first turned on, which does not change with changes in the switch travel, and does not cause the switch silver contacts to stick when a large current passes through the switch.

Description

Technical Field

[0001] The present disclosure relates to a trigger switch, and in particular to a long-stroke trigger switch with a momentary structure. Background Art

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

[0003] Commonly used trigger switches are generally of a seesaw structure. The on and off actions of the switch are 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 will be unable to disconnect. This does not comply with the GB15092.1 standard and poses a major safety hazard.

[0004] 2. Commonly used trigger switches are generally of shrapnel structure. The size of the shrapnel is not easy to control, and the switch often has a poor feel, resulting in unsmooth 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.

[0005] 3. The stroke of commonly used trigger switches is generally less than 5mm. When using more dangerous power tools, a slight press can start the power tool. This does not meet the overall safety requirements of foreign power tools and poses a major safety hazard.

[0006] Therefore, it is imperative to design a long-stroke trigger switch with a snap-action structure. Summary of the Invention

[0007] According to a first aspect of the present disclosure, a long-stroke trigger switch with a snap-action structure is provided. The trigger switch includes a base body, an upper cover, and a push shaft. One end of the push shaft is disposed in a box formed by the base body and the upper cover, and the other end extends out of the box.

[0008] A trigger is provided on one end of the push shaft extending out of the box body, and a button and a button spring are provided between the trigger and the box body; a return spring is provided on the portion of the push shaft disposed in the box body;

[0009] A push shaft insert is provided at one end of the push shaft extending out of the box body, a moving contact assembly and a terminal assembly cooperating with the moving contact assembly are provided below the push shaft insert, a middle shaft assembly is provided between the moving contact assembly and the push shaft insert, one end of the middle shaft assembly is connected to the moving contact assembly, and the other end is connected to the push shaft;

[0010] The moving contact assembly and the terminal assembly are both arranged in the base body.

[0011] In one embodiment, the trigger switch further comprises a closed locking structure;

[0012] The closed locking structure includes a lock shaft, a lock button spring and a first lock button, wherein the first lock button is screwed to one end of the lock shaft extending out of the box body, and the lock button spring is arranged on one end of the lock shaft arranged inside the box body;

[0013] The upper cover is provided with a lock shaft through hole, the push shaft is provided with a push shaft locking hole, the lock shaft passes through the lock shaft through hole and is arranged in the box body and moves in the push shaft locking hole;

[0014] The extension direction of the push shaft is perpendicular to the extension direction of the lock shaft.

[0015] In one embodiment, the trigger switch further comprises a disconnect locking structure;

[0016] The disconnect lock structure includes a reverse lock bracket, a reverse lock button spring and a second lock button, wherein the second lock button is screwed to one end of the reverse lock bracket extending out of the box body, and the reverse lock button spring is arranged on one end of the lock shaft arranged in the box body;

[0017] The upper cover is provided with an upper cover half opening, a part of the structure of the anti-lock bracket is provided in the upper cover half opening, a card slot is provided on a side of the button close to the base body, and a card block is provided on the anti-lock bracket that cooperates with the card slot;

[0018] The extension direction of the push shaft is perpendicular to the extension direction of the lock shaft.

[0019] In one embodiment, the movable contact assembly includes a movable slider, a movable contact and a movable contact spring provided on the movable slider, and a movable contact point group provided on the movable contact, and one end of the central axis assembly is connected to the movable slider;

[0020] The terminal assembly includes a terminal and a static contact group arranged on the terminal; the moving contact group cooperates with the static contact group.

[0021] In one embodiment, the bottom bracket assembly includes an outer bottom bracket, an inner bottom bracket, and a bottom bracket spring;

[0022] One end of the outer center shaft is provided with an outer center shaft hole, and one end of the inner center shaft is installed in the outer center shaft hole; the center shaft spring is sleeved on the outer center shaft;

[0023] The other end of the inner central shaft is provided with a first slot, in which a first connecting rod is provided; the other end of the outer central shaft is provided with a second slot, in which a second connecting rod is provided;

[0024] A push shaft groove is provided at the bottom of the push shaft block, and a third clamping groove is provided on the inner side wall of the push shaft groove, and the two ends of the first connecting rod are respectively clamped in the third clamping groove; a movable slider groove is provided at the top of the movable slider, and a fourth clamping groove is provided on the inner side wall of the movable slider groove, and the two ends of the second connecting rod are respectively clamped in the fourth clamping groove.

[0025] In one embodiment, the switch further comprises a first metal sheet disposed between the bottom of the movable slider and the base body, and the movable slider is capable of sliding on the first metal sheet;

[0026] The movable contact assembly further includes a second metal sheet, and the second metal sheet is capable of sliding in the movable slider slot;

[0027] The first metal sheet is arranged on the base body; a connecting column is arranged on the movable slider, and the second metal sheet is arranged on the movable slider through the connecting column.

[0028] In one embodiment, a third metal sheet is provided between the top of the push shaft insert and the upper cover, and the push shaft insert can slide on the third metal sheet;

[0029] The third metal sheet is arranged on the upper cover.

[0030] In one embodiment, a second metal sheet groove is provided at the bottom of the second metal sheet, a first connection position is provided on the movable slider, and the second metal sheet groove is provided on the first connection position;

[0031] A moving contact groove is provided at the bottom of the moving contact, a second connection position is provided on the moving slider, and the moving contact groove is provided on the second connection position.

[0032] In one embodiment, two base body through holes are provided on the base body at positions corresponding to the terminal posts, and fasteners pass through the base body through holes to fix the terminal posts to the base body;

[0033] A partition piece is provided between the two base body through holes, and the partition piece is used to separate the two wires.

[0034] In one embodiment, a clamping block is provided on the base body near the push shaft, and a clamping hole that cooperates with the clamping block is provided on the trigger.

[0035] In one embodiment, the base body is provided with a base body semicircular hole, the upper cover is provided with an upper cover semicircular hole, the base body semicircular hole and the upper cover semicircular hole constitute a push shaft through hole, and the push shaft extends out of the box body through the push shaft through hole;

[0036] The base body is provided with a plurality of clamping blocks, and the upper cover is provided with a plurality of clamping holes, and the number and position of the clamping blocks correspond to the number and position of the clamping holes respectively;

[0037] A positioning post is further provided between one end of the push shaft disposed in the box body and the upper cover, and the return spring is provided on the positioning post;

[0038] A sealing ring is provided around the push shaft in the box body.

[0039] The implementation of this disclosure includes the following technical effects:

[0040] The long-stroke trigger switch with a momentary action structure provided by the present disclosure has a momentary 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. In addition, the embodiment of the present disclosure increases the stroke of the switch by 1.8mm by arranging a button and a button spring between the trigger and the housing. In addition, the switch itself has a stroke of more than 4.6mm when turned on, so that the stroke of the switch in the embodiment of the present disclosure exceeds 6.4mm. Furthermore, the present disclosure has a novel structure and a simple process. It is suitable for large-scale electric tools and electric garden tools such as AC and DC angle grinders, profile cutting machines, aluminum cutting machines, electric circular saws, electric hammers, electric picks, and electric chain saws, and meets national safety standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A perspective view of a long-stroke trigger switch with a snap-action structure disclosed herein;

[0042] Figure 2 for Figure 1 A partial cross-sectional view of the trigger and contact parts when the switch is disconnected.

[0043] Figure 3 for Figure 1 A partial cross-sectional view of the trigger and contact parts when the switch is closed.

[0044] Figure 4 Schematic diagram of the exploded structure of the long-stroke trigger switch with a momentary structure disclosed in the present invention;

[0045] Figure 5 The figure is a schematic diagram of the assembly of the movable contact slider assembly of the long-stroke trigger switch with a momentary structure disclosed in the present invention.

[0046] Figure 6 Schematic diagram of the assembly of the trigger and push shaft of the long-stroke trigger switch with a snap-action structure disclosed in the present invention.

[0047] Figure 7Schematic diagram of the assembly of the base assembly of the long-travel trigger switch with a snap-action structure disclosed in the present invention.

[0048] Figure 8 This is an assembly diagram of the upper cover assembly of the long-stroke trigger switch with a snap-action structure disclosed herein.

[0049] In the figure, 1-base body, 2-upper cover, 3-push shaft, 4-trigger, 5-button spring, 6-reset spring, 7-moving contact assembly, 8-terminal assembly, 9-middle shaft assembly, 11-closed locking structure, 12-first metal sheet, 13-second metal sheet, 14-third metal sheet, 15-fastener, 16-positioning column, 17-sealing ring, 31-push shaft insert, 32-push shaft lock hole, 33-push shaft groove, 34-third slot, 41-button, 42-cylinder, 43-slot, 71-moving slider, 711-moving slider groove, 712-fourth slot, 713-connecting column, 714-first connecting position, 715-second connecting position, 72-moving contact, 721-moving contact groove, 73-moving contact spring, 7 4-moving contact group, 81-binding post, 82-static contact group, 91-outer central axis, 911-outer central axis hole, 912-second slot, 92-inner central axis, 921-first slot, 93-central axis spring, 94-first connecting rod, 95-second connecting rod, 111-self-locking shaft, 111D-anti-locking bracket, 112-lock button spring, 112D-anti-locking lock button spring, 113-first lock button, 113D-first lock button, 131-second metal sheet groove, 101-base body through hole, 102-block, 103-base body semicircular hole, 104-clamping block, 105-rib position, 201-lock shaft through hole, 201D-upper cover half opening, 202-upper cover semicircular hole, 203-clamping hole, 1111-clamping boss. DETAILED DESCRIPTION

[0050] The present disclosure will be described in detail below with reference to embodiments and drawings. It should be noted that the described embodiments are only intended to facilitate understanding of the present disclosure and do not have any limiting effect on the present disclosure.

[0051] The directions described in this application, such as up, down, left, and right, are used for the convenience of describing with reference to the accompanying drawings and do not constitute a limitation on the scope of protection.

[0052] like Figure 1-4 As shown, as shown, a long-stroke trigger switch with a momentary structure provided by an embodiment of the present disclosure includes a base body 1, an upper cover 2 and a push shaft 3; one end of the push shaft 3 is arranged in a box body formed by the base body 1 and the upper cover 2, and the other end extends out of the box body;

[0053] A trigger 4 is provided on one end of the push shaft 3 extending out of the box, and a button 41 and a button spring 5 are provided between the trigger 4 and the box; a return spring 6 is provided on the portion of the push shaft 3 disposed within the box;

[0054] A push shaft insert 31 is provided on one end of the push shaft 3 within the box body, a moving contact assembly 7 and a terminal assembly 8 cooperating with the moving contact assembly 7 are provided below the push shaft insert 31, a central shaft assembly 9 is provided between the moving contact assembly 7 and the push shaft insert 31, one end of the central shaft assembly 9 is connected to the moving contact assembly 7, and the other end is connected to the push shaft 3;

[0055] The moving contact assembly 7 and the terminal assembly are both arranged on the base body 1 .

[0056] The long-stroke trigger switch with a momentary action structure provided by the present disclosure has a momentary 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. In addition, the embodiment of the present disclosure increases the stroke of the switch by 1.8mm by arranging a button and a button spring between the trigger and the housing. In addition, the switch itself has a stroke of more than 4.6mm when turned on, so that the stroke of the switch in the embodiment of the present disclosure exceeds 6.4mm. Furthermore, the present disclosure has a novel structure and a simple process. It is suitable for large-scale electric tools and electric garden tools such as AC and DC angle grinders, profile cutting machines, aluminum cutting machines, electric circular saws, electric hammers, electric picks, and electric chain saws, and meets national safety standards.

[0057] In one embodiment, Figure 4 As shown, a button 41 is further provided between the trigger 4 and the push shaft 3 , and two cylinders 42 are provided on the button 41 , and the two button springs 5 are respectively provided on the cylinders 42 .

[0058] like Figure 1 、 4 , 8, the trigger switch further includes a closed locking structure 11;

[0059] In one implementation, the closed locking structure 11 includes a lock shaft 111, a lock button spring 112, and a first lock button 113. The first lock button 113 is screwed to one end of the lock shaft 111 extending out of the box body. The lock button spring 112 is provided on one end of the lock shaft 111 provided inside the box body.

[0060] The upper cover 2 is provided with a lock shaft through hole 201 , the trigger 4 is provided with a trigger lock hole 32 , and the lock shaft 111 passes through the lock shaft through hole 201 and is disposed in the box body and moves in the push shaft lock hole 32 .

[0061] The above structure provided in this embodiment can enable the switch in this embodiment to have a closed locking function.

[0062] In another implementation, Figure 4 As shown, the disconnect lock structure 11 includes an anti-lock bracket 111D, an anti-lock button spring 112D and a second lock button 113D. The two lock buttons 113D are screwed to one end of the lock shaft 111D extending out of the box body. The anti-lock button spring 112D is arranged on one end of the anti-lock bracket 111D arranged in the box body.

[0063] The upper cover 2 is provided with an upper cover half opening 201D, and part of the structure of the anti-lock bracket 111D is provided in the upper cover half opening 201D. The button 41 is provided with a card slot 43 on the side close to the base body, and the anti-lock bracket 111D is provided with a card connecting boss 1111 that cooperates with the card slot 43.

[0064] In this embodiment, a latching slot 43 is provided on the button 41 on a side close to the base body, and a latching boss 1111 is provided on the anti-lock bracket 111D, so that the switch in this embodiment has an off-lock function.

[0065] It should be noted that the extension direction of the push shaft 3 in this embodiment is perpendicular to the extension direction of the lock shaft 111 .

[0066] like Figure 2-5 As shown, the movable contact assembly 7 includes a movable slider 71, a movable contact 72 and a movable contact spring 73 provided on the movable slider 71, and a movable contact point group 74 provided on the movable contact 72. One end of the central axis assembly 9 is connected to the movable slider 71.

[0067] The terminal assembly 8 includes a terminal 81 and a static contact group 82 provided on the terminal 81 ; the movable contact group 74 cooperates with the static contact group 82 .

[0068] like Figure 4-5 As shown, the middle shaft assembly 9 includes an outer middle shaft 91, an inner middle shaft 92, and a middle shaft spring 93;

[0069] One end of the outer center shaft 91 is provided with an outer center shaft hole 911 , and one end of the inner center shaft 92 is mounted in the outer center shaft hole 911 ; the center shaft spring 93 is sleeved on the outer center shaft 91 ;

[0070] The other end of the inner central axis 92 is provided with a first slot 921, in which a first connecting rod 94 is provided; the other end of the outer central axis 91 is provided with a second slot 912, in which a second connecting rod 95 is provided;

[0071] A push shaft groove 33 is provided at the bottom of the push shaft block 31, and a third clamping groove 34 is provided on the inner side wall of the push shaft groove 33, and the two ends of the first connecting rod 94 are respectively clamped in the third clamping groove 34; a movable slider groove 711 is provided at the top of the movable slider 71, and a fourth clamping groove 712 is provided on the inner side wall of the movable slider groove 711, and the two ends of the second connecting rod 95 are respectively clamped in the fourth clamping groove 712.

[0072] like Figure 2-4 As shown, the switch further includes a first metal sheet 12 disposed between the bottom of the movable slider 71 and the base body 1 , and the movable slider 71 can slide on the first metal sheet 12 ;

[0073] The movable contact assembly 7 further includes a second metal sheet 13, which is arranged on the connecting column 713 of the movable slider;

[0074] The first metal sheet 12 is disposed on the base body 1 ; a connecting column 711 is disposed on the movable slider 71 ; the second metal sheet 13 is disposed on the movable slider 71 via the connecting column 713 and can slide left and right.

[0075] In this embodiment, a first metal sheet is provided between the movable slider and the base body to convert the plastic-to-plastic friction between the movable slider and the plastic base body into plastic-to-metal friction between the movable slider and the first metal sheet. The high smoothness of the surface of the first metal sheet is utilized to reduce the friction coefficient, thereby increasing the agility of the movable slider in moving left and right, and making the switch on and off instantaneous. A second metal sheet is provided on the movable slider so that the second metal sheet is pressed against the two base body ribs 105104 in the base body 1, so that the movable contact spring 73 is in a compressed state, thereby providing the movable slider 71 with a reset auxiliary force.

[0076] like Figure 2-4 As shown, a third metal sheet 14 is provided between the top of the push shaft insert 31 and the upper cover 2 , and the push shaft insert 31 can slide on the third metal sheet 14 ;

[0077] The third metal sheet 14 is disposed on the upper cover 2 .

[0078] By arranging a third metal sheet between the push shaft insert and the upper cover, the high smoothness of the surface of the third metal sheet is utilized to convert the friction between the plastic and the plastic between the push shaft insert and the upper cover into the friction between the plastic and the metal between the push shaft insert and the third metal sheet, thereby reducing the friction coefficient and increasing the agility of the push shaft insert in moving left and right.

[0079] like Figure 4 、 5As shown, a second metal sheet groove 131 is provided at the bottom of the second metal sheet 13, a first connecting position 714 is provided on the movable slider 71, and the second metal sheet groove 131 is provided on the first connecting position 714;

[0080] A moving contact groove 721 is provided at the bottom of the moving contact 72 . A second connecting position 715 is provided on the moving slider 71 . The moving contact groove 721 is provided on the second connecting position 715 .

[0081] like Figure 7 As shown, two base body through holes 101 are provided on the base body 1 at positions corresponding to the terminal posts 81, and the fasteners 15 pass through the base body through holes 101 to fix the terminal posts 81 to the base body 1;

[0082] In this embodiment, a partition sheet is provided between the two base body through holes 101 to separate the two terminal posts 81 , thereby increasing the creepage distance.

[0083] like Figure 4 、 6 As shown, a block 102 is provided on the base body 1 near the push shaft 3, and a slot cooperating with the block 102 is provided on the anti-lock bracket 111D to play a guiding role.

[0084] like Figure 4 、 7 As shown, the base body 1 is provided with a base body semicircular hole 103, and the upper cover 2 is provided with an upper cover semicircular hole 202. The base body semicircular hole 103 and the upper cover semicircular hole 202 constitute a push shaft through hole, and the push shaft 3 extends out of the box body through the push shaft through hole;

[0085] The base body 1 is provided with a plurality of clamping blocks 104, and the upper cover 2 is provided with a plurality of clamping holes 203. The number and position of the clamping holes 203 correspond to the number and position of the clamping blocks 104.

[0086] A positioning post 16 is provided between one end of the push shaft 3 disposed in the box body and the upper cover 2 , and the return spring 6 is provided on the positioning post 16 ;

[0087] A sealing ring 17 is provided around the push shaft 3 and located inside the box.

[0088] The long-stroke trigger switch with a momentary structure provided by the present disclosure has the following working process for realizing the on-off function:

[0089] When the trigger 4 is pressed, the trigger 4 slides on the button 41. When the trigger 4 and the button 41 are in contact, the button 41 is driven to move to the right, thereby driving the push shaft 3. In the process, the movable slider 71 will jump rapidly to the left under the action of the central axis spring 9, so that the moving contact group 74 on the moving contact 72 contacts the static contact group on the terminal 81, realizing the instantaneous connection function of the switch, and at the same time the central axis spring 53 is compressed.

[0090] When the trigger 4 is released, the center axis spring 93 and the reset spring 5 are reset at the same time, thereby driving the movable slider to jump to the right, thereby disconnecting the moving contact group 74 on the moving contact 72 from the static contact group 82 on the terminal 81, realizing the disconnection function of the switch.

[0091] The long-stroke trigger switch with a momentary structure provided by the present disclosure has the following working process for achieving the switch closing and locking function:

[0092] When the trigger 4 is pressed, the trigger 4 drives the push shaft 3 to slide to the right, thereby driving the lock shaft 111 to move in the push shaft lock hole 32. When the trigger 4 is pressed to the bottom, the first lock button 113 is pressed tightly and then the trigger 4 is released. At this time, the trigger 4 is hooked so that the push shaft 3 cannot move under the cooperation of the lock shaft 111 and the push shaft lock hole 32, thereby realizing the closed locking function of the switch.

[0093] When the trigger 4 is pressed again and then released, the first locking button 113 automatically pops open under the action of the locking button spring 112, the locking shaft 111 and the push shaft locking hole 32 are unlocked, and the first locking button 113 is reset under the action of the locking button spring 112, the locking shaft 111 and the push shaft locking hole 32 are separated, and the switch is free to reset.

[0094] The long-stroke trigger switch with a momentary structure provided by the present disclosure has the following working process for realizing the switch disconnect lock function:

[0095] Without pressing the switch, the engaging protrusion 1111 on the anti-lock bracket 111D presses against the engaging groove 43 on the button 41, and the trigger 4 cannot be pressed. First, press the second lock button 113D, and the engaging protrusion 1111 on the anti-lock bracket 111D is misaligned with the engaging groove 43 on the button 41. Then press the trigger 4 so that the trigger 4 can be pressed and the switch is turned on. Release the trigger 4, the switch is turned off, and the anti-lock bracket 111D is reset under the action of the anti-lock lock button spring 112D.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit the scope of protection 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 solutions of the present disclosure may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present disclosure.

Claims

1. A long-stroke trigger switch with a momentary structure, characterized in that: The trigger switch includes a base body, an upper cover and a push shaft; 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; A trigger is provided on one end of the push shaft extending out of the box body, and a button and a button spring are provided between the trigger and the box body; a return spring is provided on the portion of the push shaft disposed in the box body; A push shaft block is provided on one end of the push shaft in the box body, a moving contact assembly and a terminal assembly cooperating with the moving contact assembly are provided below the push shaft block, a middle shaft assembly is provided between the moving contact assembly and the push shaft block, one end of the middle shaft assembly is connected to the moving contact assembly, and the other end is connected to the push shaft; The moving contact assembly and the terminal assembly are both arranged on the base body.

2. A long-stroke trigger switch with a snap-action structure according to claim 1, characterized in that: The trigger switch also includes a closed locking structure; The closed locking structure includes a lock shaft, a lock button spring and a first lock button, wherein the first lock button is screwed to one end of the lock shaft extending out of the box body, and the lock button spring is arranged on one end of the lock shaft arranged inside the box body; The upper cover is provided with a lock shaft through hole, the push shaft is provided with a push shaft locking hole, the lock shaft passes through the lock shaft through hole and is arranged in the box body and moves in the push shaft locking hole; The extension direction of the push shaft is perpendicular to the extension direction of the lock shaft.

3. The long-stroke trigger switch with a snap-action structure according to claim 2, characterized in that: The trigger switch also includes a disconnect locking structure; The disconnect lock structure includes a reverse lock bracket, a reverse lock button spring and a second lock button, wherein the second lock button is screwed to one end of the reverse lock bracket extending out of the box body, and the reverse lock button spring is arranged on one end of the lock shaft arranged in the box body; The upper cover is provided with an upper cover half opening, part of the structure of the anti-lock bracket is provided in the upper cover half opening, a card slot is provided on the side of the button close to the base body, and the anti-lock bracket is provided with a card block that cooperates with the card slot.

4. A long-stroke trigger switch with a snap-action structure according to any one of claims 1 to 3, characterized in that: The moving contact assembly includes a moving slider, a moving contact and a moving contact spring provided on the moving slider, and a moving contact point group provided on the moving contact, and one end of the central axis assembly is connected to the moving slider; The terminal assembly includes a terminal and a static contact group arranged on the terminal; the moving contact group cooperates with the static contact group.

5. The long-stroke trigger switch with a snap-action structure according to claim 4, characterized in that: The middle shaft assembly includes an outer middle shaft, an inner middle shaft, and a middle shaft spring; One end of the outer center shaft is provided with an outer center shaft hole, and one end of the inner center shaft is installed in the outer center shaft hole; the center shaft spring is sleeved on the outer center shaft; The other end of the inner central shaft is provided with a first slot, in which a first connecting rod is provided; the other end of the outer central shaft is provided with a second slot, in which a second connecting rod is provided; A push shaft groove is provided at the bottom of the push shaft block, and a third clamping groove is provided on the inner side wall of the push shaft groove, and the two ends of the first connecting rod are respectively clamped in the third clamping groove; a movable slider groove is provided at the top of the movable slider, and a fourth clamping groove is provided on the inner side wall of the movable slider groove, and the two ends of the second connecting rod are respectively clamped in the fourth clamping groove.

6. A long-stroke trigger switch with a snap-action structure according to claim 4, characterized in that: The switch further comprises a first metal sheet disposed between the bottom of the movable slider and the base body, and the movable slider is capable of sliding on the first metal sheet; The movable contact assembly further includes a second metal sheet, and the second metal sheet is capable of sliding in the slot of the movable slider; The first metal sheet is arranged on the base body; a connecting column is arranged on the movable slider, and the second metal sheet is arranged in the movable slider through the connecting column.

7. A long-stroke trigger switch with a snap-action structure according to any one of claims 1 to 3, characterized in that: A third metal sheet is provided between the top of the push shaft insert and the upper cover, and the push shaft insert can slide on the third metal sheet; The third metal sheet is arranged on the upper cover.

8. The long-stroke trigger switch with a snap-action structure according to claim 6, characterized in that: A second metal sheet groove is provided at the bottom of the second metal sheet, a first connecting position is provided on the movable slider, and the second metal sheet groove is provided on the first connecting position; A moving contact groove is provided at the bottom of the moving contact, a second connection position is provided on the moving slider, and the moving contact groove is provided on the second connection position.

9. The long-stroke trigger switch with a snap-action structure according to claim 4, characterized in that: Two base body through holes are provided on the base body at positions corresponding to the binding posts, and fasteners pass through the base body through holes to fix the binding posts to the base body.

10. A long-stroke trigger switch with a snap-action structure according to claim 1 or 2, characterized in that: The base body is provided with a semicircular hole of the base body, and the upper cover is provided with a semicircular hole of the upper cover. The semicircular hole of the base body and the semicircular hole of the upper cover constitute a push shaft through hole, and the push shaft extends out of the box body through the push shaft through hole; The base body is provided with a plurality of clamping blocks, and the upper cover is provided with a plurality of clamping holes, and the number and position of the clamping blocks correspond to the number and position of the clamping holes respectively; A positioning column is further provided between one end of the push shaft disposed in the box body and the upper cover, and the return spring is disposed on the positioning column.

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