CN212542250U

CN212542250U - Momentary action trigger switch

Info

Publication number: CN212542250U
Application number: CN202021631305.XU
Authority: CN
Inventors: 倪圣珑
Original assignee: Zhejiang Jiaben Electronics Co ltd
Current assignee: Zhejiang Jiaben Electronics Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-02-12
Anticipated expiration: 2030-08-07

Abstract

The present disclosure provides a momentary action trigger switch. The trigger switch comprises a base body, an upper cover, a push shaft, a trigger connected with 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 of the push shaft extends out of the box body; a reverse locking button component is arranged between the trigger and the upper cover, one end of the reverse locking button component is abutted against the upper cover, and the other end of the reverse locking button component extends out of the trigger; a push shaft sliding block is arranged at one end of the push shaft arranged in the box body, a moving contact sliding block is arranged below the push shaft sliding block, a middle shaft component is arranged between the push shaft sliding block and the moving contact sliding block, one end of the middle shaft component is connected to the push shaft sliding block, and the other end of the middle shaft component is connected to the moving contact sliding block; the moving contact sliding block is provided with a moving contact component, and the base body is provided with a static contact component matched with the moving contact component. Contact pressure ratio is great when this disclosed switch just switches on, and contact pressure can not change along with the switch stroke change, when the switch passes through the heavy current, can not cause the adhesion of switch silver contact, and such structure makes the switch can move in the twinkling of an eye simultaneously.

Description

Momentary action trigger switch

Technical Field

The present disclosure relates to a trigger switch, and more particularly, to a trigger switch with momentary actuation.

Background

The trigger switches on the market at present have basically similar functions, but have the following functional defects:

1. this type of trigger switch commonly used generally is the shell fragment structure, and the action of switch-on and disconnection is not the instantaneous action, and consequently contact pressure is little when the switch just switches on, if the switch passes through heavy current at this moment, can cause the silver contact adhesion of switch, can cause the unable disconnection of electric tool when serious, does not conform to GB15092.1 standard, has great potential safety hazard to human life.

2. This type of trigger switch commonly used generally is the shell fragment structure, and the size of shell fragment is difficult to control, and it is difficult to control often to appear the switch and feels badly and cause the switch-on and break off not smooth and easy, can cause electric tool to burn out or even arouse the conflagration when serious, does not conform to GB15092.1 standard equally, has great potential safety hazard to human life.

For this reason, it is imperative to design a trigger switch that operates instantaneously.

Disclosure of Invention

The present disclosure is directed to overcoming the deficiencies of the prior art and providing a momentary action trigger switch.

The instant trigger switch comprises a base body, an upper cover, a push shaft, a trigger connected with 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 of the push shaft extends out of the box body;

a reverse locking button assembly is arranged between the trigger and the upper cover, one end of the reverse locking button assembly abuts against the upper cover, and the other end of the reverse locking button assembly extends out of the trigger;

a push shaft sliding block is arranged at one end of the push shaft arranged in the box body, a moving contact sliding block is arranged below the push shaft sliding block, a middle shaft component is arranged between the push shaft sliding block and the moving contact sliding block, one end of the middle shaft component is connected to the push shaft sliding block, and the other end of the middle shaft component is connected to the moving contact sliding block;

the moving contact sliding block is provided with a moving contact component, and the base body is provided with a static contact component matched with the moving contact component.

The trigger switch of action in twinkling of an eye that this disclosure provides still includes following technical scheme:

wherein the trigger switch further comprises a self-locking button assembly;

the self-locking button assembly comprises a self-locking button, a self-locking button shaft and a self-locking button spring arranged on the self-locking button shaft;

be provided with from the lock button hole on the lock button, be provided with first through-hole on the trigger, the one end of lock button axle set up in the lock button hole, the other end of lock button axle passes first through-hole will lock button swing joint in on the trigger.

The anti-locking button assembly comprises an anti-locking button, an anti-locking button shaft and a locking button torsion spring;

the trigger is provided with a second through hole, the anti-locking button is provided with a third through hole, and the anti-locking button shaft sequentially penetrates through the second through hole and the third through hole to movably connect the anti-locking button to the trigger;

one end of the lock button torsion spring is propped against the anti-lock button, and the other end of the lock button torsion spring is propped against the trigger.

The middle shaft assembly comprises an outer middle shaft, an inner middle shaft and a middle shaft spring;

an outer middle shaft hole is formed in the outer middle shaft, and one end of the inner middle shaft is installed in the outer middle shaft hole; the middle shaft spring is arranged on the outer middle shaft;

a first clamping groove is formed in the other end of the outer middle shaft, and a first connecting rod is arranged in the first clamping groove; a second clamping groove is formed in the other end of the inner middle shaft, and a second connecting rod is arranged in the second clamping groove;

a third clamping groove is formed in the bottom of the push shaft sliding block, and two ends of the first connecting rod are clamped in the third clamping groove respectively; the top of the moving contact sliding block is provided with a fourth clamping groove, and two ends of the second connecting rod are respectively clamped in the fourth clamping groove.

Wherein, be provided with the guide slot in the outer centre shaft hole, the one end of installing in the outer centre shaft hole on the interior axis is provided with the overhead kick, the overhead kick can be colluded in the guide slot, so that the axis spring is fixed in between interior axis and the outer centre shaft

The movable contact assembly comprises two groups of movable contacts, two groups of movable contact springs and movable contacts respectively arranged on the two groups of movable contacts; the static contact component comprises two groups of static contact pins and static contacts respectively arranged on the two groups of static contact pins;

the bottom of the moving contact sliding block 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 sets of clamping holes, and the two sets of static contact pins are respectively clamped in the clamping holes.

Wherein the trigger switch further comprises a first metal sheet and a second metal sheet;

the first metal sheet is arranged between the push shaft sliding block and the upper cover, and the second metal sheet is arranged between the moving contact sliding block and the base body.

The trigger is provided with a fourth through hole, one end of the push shaft, which extends out of the box body, is provided with a fifth through hole, and the first fastener sequentially penetrates through the fourth through hole and the fifth through hole to movably connect the push shaft to the trigger.

Wherein, the trigger switch also comprises a dustproof sleeve;

a base body groove is formed in the base body, and the dustproof sleeve is arranged on the base body groove;

and the push shaft is provided with a return spring.

Wherein the trigger comprises a trigger frame and a trigger pressing piece;

and a sixth through hole is formed in the trigger support, a seventh through hole is formed in the trigger pressing piece, and a second fastening piece penetrates through the sixth through hole and the seventh through hole in sequence to movably connect the trigger pressing piece to the trigger support.

And the upper cover is provided with an eighth through hole, and a second fastener sequentially penetrates through the sixth through hole and the eighth through hole to connect the trigger to the upper cover.

The implementation of the present disclosure includes the following technical effects:

1. the trigger switch of this instant action has the instant action structure to contact pressure ratio is great when making the switch just put through, and contact pressure can not change along with the change of switch stroke, when the switch passes through the heavy current, can not cause the adhesion of switch silver contact, and such structure can make the switch act in the twinkling of an eye simultaneously.

2. The electric tool is novel in structure and simple in process, is suitable for large electric tools such as alternating current and direct current angle grinders, section cutting machines, dielectric aluminum machines, electric hammers and electric picks, and meets the national safety standard.

3. According to the sliding block structure, the first metal sliding sheet is arranged between the sliding block and the upper cover, and the high smoothness of the surface of the sliding sheet is utilized to convert the friction between the plastic and the plastic between the sliding block and the upper cover into the friction between the plastic and the metal between the sliding block and the metal sliding sheet, so that the friction coefficient is reduced, and the moving agility of the sliding block is improved; through set up the second metal gleitbretter between moving contact slider and the base body to convert the friction between plastics and the plastics between moving contact slider and the plastics base body into the friction between plastics and the metal between moving contact slider and the metal gleitbretter, utilize the high smooth degree on gleitbretter surface in order further to reduce coefficient of friction, increase the agility that moves about moving contact slider, make the switch-on and the disconnection of switch have the motion nature in the twinkling of an eye.

Drawings

FIG. 1 is a perspective view of a momentary action trigger switch of the present disclosure;

fig. 2 is a partial cross-sectional view of the trigger portion of fig. 1 with the switch open.

Fig. 3 is a partial cross-sectional view of the contact portion when the switch of fig. 1 is open.

Fig. 4 is a partial cross-sectional view of the trigger portion of fig. 1 with the switch closed.

Fig. 5 is a partial cross-sectional view of the contact portion when the switch of fig. 1 is closed.

FIG. 6 is an exploded view of the momentary action trigger switch of the present disclosure;

fig. 7 is a schematic view of the moving contact slider assembly of the instant trigger switch of the present disclosure.

FIG. 8 is a schematic view of a push shaft assembly configuration of the instant action trigger switch of the present disclosure.

Fig. 9 is a schematic view of an assembly structure of a push shaft and a movable contact slider assembly of the instant trigger switch according to the present disclosure, which includes a middle shaft assembly.

Fig. 10 is a schematic view of a base assembly mounting structure of the instant action trigger switch of the present disclosure.

FIG. 11 is an assembly view of the instant action trigger switch cover assembly of the present disclosure.

In the figure, 1-a base body, 2-an upper cover, 3-a push shaft, 4-a trigger, 5-a reverse locking button component, 6-a push shaft sliding block, 7-a moving contact sliding block, 8-a middle shaft component, 9-a moving contact component, 10-a fixed contact component, 11-a self-locking button component, 12-a first connecting rod, 13-a second connecting rod, 14-a first metal sheet, 15-a second metal sheet, 16-a first fastening piece, 17-a dustproof sleeve, 18-a return spring, 19-a second fastening piece, 101-a clamping hole, 102-a base body groove, 21-an eighth through hole, 111-a self-locking button, 112-a self-locking button shaft, 113-a self-locking button spring, 1111-a self-locking button hole, 31-a fifth through hole and 41-a first through hole, 42-second through hole, 43-fourth through hole, 44-trigger support, 45-trigger pressing piece, 46-trigger spring, 441-sixth through hole, 451-seventh through hole, 51-reverse locking button, 52-reverse locking button shaft, 53-locking button torsion spring, 511-third through hole, 61-third clamping groove, 71-fourth clamping groove, 72-clamping groove, 81-outer central shaft, 82-inner central shaft, 83-central shaft spring, 812-first clamping groove, 821-second clamping groove, 91-moving contact, 92-moving contact spring, 911-moving contact, 1001-static contact pin and 10011-static contact.

Detailed Description

The present disclosure will be described in detail below with reference to embodiments and drawings, it being noted that the described embodiments are only intended to facilitate understanding of the present disclosure, and do not impose any limitation thereon. The orientations described in the present application, such as up, down, left, right, and left, are convenient to use and described with reference to the drawings, and do not limit the scope of protection.

The instant trigger switch provided by the present disclosure, as shown in fig. 1-6 and 11, comprises 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 disposed between the trigger 4 and the upper cover 2;

one end of the push shaft is arranged in a box body formed by the base body 1 and the upper cover 2, and the other end of the push shaft extends out of the box body;

a reverse locking button component 5 is arranged between the trigger 4 and the upper cover 2, one end of the reverse locking button component 5 is abutted against the upper cover 2, and the other end of the reverse locking button component 5 extends out of the trigger 4;

a push shaft sliding block 6 is arranged at one end of the push shaft 3 arranged in the box body, a moving contact sliding block 7 is arranged below the push shaft sliding block 6, a middle shaft component 8 is arranged between the push shaft sliding block 6 and the moving contact sliding block 7, one end of the middle shaft component 8 is connected to the push shaft sliding block 6, and the other end of the middle shaft component 8 is connected to the moving contact sliding block 7;

the moving contact sliding block 7 is provided with a moving contact component 9, and the base body 1 is provided with a static contact component 10 matched with the moving contact component 9.

The trigger switch with instant action disclosed by the invention has an instant action structure, so that the contact pressure ratio of a contact is higher when the switch is just switched on, and when a large current passes through the switch, the silver contact of the switch cannot be adhered, so that the switch can be quickly switched off; the electric tool is novel in structure and simple in process, is suitable for large electric tools such as alternating current and direct current angle grinders, section cutting machines, dielectric aluminum machines, electric hammers and electric picks, and meets the national safety standard.

In one embodiment, as shown in FIGS. 6 and 11, the trigger switch further includes a self-locking button assembly 11;

the self-locking button assembly 11 comprises a self-locking button 111, a self-locking button shaft 112 and a self-locking button spring 113 arranged on the self-locking button shaft 112;

be provided with from lock button hole 1111 on the lock button 111, be provided with first through-hole 41 on the trigger 4, from the one end of lock button axle 112 set up in the lock button hole 1111, the other end passes first through-hole 41 will from lock button 111 swing joint in on the trigger 4.

In one embodiment, as shown in FIG. 6, the anti-lock button assembly 5 includes an anti-lock button 51, an anti-lock button shaft 52, and a lock button torsion spring 53;

the trigger 4 is provided with a second through hole 42, the anti-locking button 51 is provided with a third through hole 511, and an anti-locking button shaft 52 sequentially penetrates through the second through hole 42 and the third through hole 511 to movably connect the anti-locking button 51 to the trigger 4;

one end of the lock button spring 53 abuts against the anti-lock button 51, and the other end abuts against the trigger 4.

In one embodiment, as shown in fig. 6, 7 and 9, the bottom bracket assembly 8 includes an outer bottom bracket 81, an inner bottom bracket 82, and a bottom bracket spring 83;

an outer middle shaft hole is formed in the outer middle shaft 81, and one end of the inner middle shaft 82 is installed in the outer middle shaft hole; the middle shaft spring 83 is arranged on the outer middle shaft 81;

a first clamping groove 812 is formed in the other end of the outer middle shaft 81, and a first connecting rod 12 is arranged in the first clamping groove 812; a second clamping groove 821 is formed in the other end of the inner middle shaft 82, and a second connecting rod 13 is arranged in the second clamping groove 821;

a third clamping groove 61 is formed in the bottom of the push shaft sliding block 6, and two ends of the first connecting rod 12 are respectively clamped in the third clamping groove 61; a fourth clamping groove 71 is formed in the top of the movable contact sliding block 7, and two ends of the second connecting rod 13 are respectively clamped in the fourth clamping groove 71.

Preferably, a guide groove is arranged in the outer middle shaft hole, and an inverted hook is arranged at one end of the inner middle shaft 82, which is installed in the outer middle shaft hole, and the inverted hook can be hooked in the guide groove, so that the middle shaft spring 83 is fixed between the inner middle shaft 82 and the outer middle shaft 81.

In one embodiment, as shown in fig. 6, 7 and 10, the movable contact assembly 9 includes two sets of movable contacts 91, two sets of movable contact springs 92, and movable contacts 911 respectively disposed on the two sets of movable contacts 91; the static contact component 10 includes two sets of static contact pins 1001 and static contacts 10011 respectively disposed on the two sets of static contact pins 1001;

the bottom of the moving contact sliding block 7 is provided with two clamping grooves 72, and the two groups of moving contacts 91 are respectively clamped in the clamping grooves 72; the bottom of base body 1 is provided with two sets of joint holes 101, two sets of stationary contact feet 1001 pass through screw 30 joint respectively in the joint hole 101.

Optionally, as shown in fig. 6, the trigger switch further comprises a first metal sheet 14;

the first metal sheet 14 is arranged between the push shaft sliding block 6 and the upper cover 2.

In the embodiment, the first metal sliding sheet is arranged between the sliding block and the upper cover, and the high smoothness of the surface of the sliding sheet is utilized to convert the friction between the plastic and the plastic between the sliding block and the upper cover into the friction between the plastic and the metal between the sliding block and the metal sliding sheet, so that the friction coefficient is reduced, and the moving agility of the sliding block is improved;

optionally, as shown in fig. 6, the trigger switch further comprises a second metal sheet 15;

the second metal sheet 15 is disposed between the movable contact slider 7 and the base body 1.

This embodiment is through setting up the second metal gleitbretter between moving contact slider and the base body to the friction between plastics and the plastics between with moving contact slider and the plastics base body turns into the friction between plastics and the metal between moving contact slider and the metal gleitbretter, utilizes the high smooth degree on gleitbretter surface in order further to reduce coefficient of friction, increases the agility that moves about moving contact slider.

In one embodiment, as shown in fig. 6, a fourth through hole 43 is formed in the trigger 4, a fifth through hole 31 is formed in one end of the push shaft 3, which extends out of the box body, and the first fastening member 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.

In one embodiment, as shown in fig. 6 and 8, the trigger switch further comprises a dust cover 17;

a base body groove 102 is formed in the base body 1, and the dustproof sleeve 17 is arranged on the base body groove 102;

the push shaft 3 is provided with a return spring 18.

In one embodiment, as shown in fig. 6, the trigger 4 includes a trigger frame 44 and a trigger press 45;

the trigger support 44 is provided with a sixth through hole 441, the trigger pressing piece 45 is provided with a seventh through hole 451, and the second fastening piece 19 passes through the sixth through hole 441 and the seventh through hole 451 in sequence to movably connect the trigger pressing piece 45 to the trigger support 44.

Optionally, the second fastener 19 is a pin.

In one embodiment, as shown in fig. 6, an eighth through hole 21 is formed on the upper cover, and a second fastening member 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.

According to the instant-action trigger switch provided by the disclosure, when the trigger 4 is pressed, the lower end of the anti-locking button 51 is pressed against the upper part of the shell 2, and the principle that the vertical force is large is utilized, so that the compression strength of more than 200N can be realized, the trigger cannot be pressed, and the switch is disconnected and locked, namely, the anti-self-locking function is realized.

The trigger switch of an instant action that this disclosure provides, its working process as follows:

firstly, the anti-lock button 51 is shifted to the left, then the trigger 4 is pressed, the anti-lock button 51 rotates clockwise, the lower end of the anti-lock button 51 is separated from the shell 2 after rotating, at this time, the trigger pressing piece 45 can be pressed smoothly, the trigger pressing piece 45 rotates clockwise by taking the second fastening piece 19 as the center, the trigger support 44 drives the first fastening piece 16, then the component composed of the push shaft 3 and the push shaft sliding block 6 is driven to slide leftwards, the push shaft sliding block 6 drives the middle shaft component 8 composed 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 component 9 composed of the moving contact sliding block 7, the moving contact 911 on the moving contact 91 and the moving contact 92 is driven to slide rightwards quickly under the acting force of the middle shaft spring 83, the sliding speed is very fast, and the instantaneous action is close to make 4 moving contacts contact 10011 riveted on the static contact 1001 respectively, causing the switch to turn on.

The trigger 4 is continuously pressed to the end, the self-locking button 111 is pressed again, the self-locking button 111 drives the self-locking button shaft 112 to extend into the first through hole 41 on the trigger 4, the trigger 4 is released, the first through hole 41 is hooked by the large end part of the self-locking button shaft 112, and the closed locking of the switch, namely the self-locking function, is realized.

When the trigger is pressed to the bottom again, the self-locking button component is reset under the action of the self-locking button spring 113, the self-locking button shaft 112 is separated from the first through hole 41, when the trigger 4 is released, the trigger 4 is turned upwards under the action of the trigger spring 46, the trigger bracket 44 drives the second fastening piece 19 to drive the assembly consisting of the push shaft 3 and the push shaft sliding block 6 to slide rightwards, the push shaft 3 simultaneously slides rightwards under the action of the return spring 18, the push shaft sliding block 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 sliding block component 9 composed of the moving contact sliding block 7, the moving contact 91, the moving contact 911 and the moving contact spring 92 is driven to slide leftwards rapidly under the action of the middle shaft spring 83, so that the 4 moving contacts are separated from the stationary contact 10011 riveted on the stationary contact pin 1001 by the 4 moving contacts, respectively, and the switch is disconnected.

And the trigger 4 is continuously loosened, the counter lock button 51 rotates anticlockwise under the twisting of the lock button torsion spring 53, the lower end of the counter lock button 51 rotates and then abuts against the top of the shell 2 again, and the switch restores the function of locking and unlocking.

Finally, it should be noted that the above embodiments are only intended to illustrate the technical solutions of the present disclosure, and not to limit the scope of the present disclosure, and although the present disclosure has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present disclosure without departing from the spirit and scope of the technical solutions of the present disclosure.

Claims

1. The trigger switch with instant action is characterized by comprising a base body, an upper cover, a push shaft, a trigger connected with the base body and a trigger spring arranged between the trigger and the upper cover;

2. The trigger switch of claim 1, further comprising a self-locking button assembly;

the automatic locking device is characterized in that a self-locking button hole is formed in the self-locking button, a first through hole is formed in the trigger, one end of the self-locking button shaft is arranged in the self-locking button hole, and the other end of the self-locking button shaft penetrates through the first through hole to connect the self-locking button on the trigger in a movable mode.

3. The trigger switch of claim 1 or 2, wherein the anti-lock button assembly comprises an anti-lock button, an anti-lock button shaft, and a lock button torsion spring;

4. The trigger switch of claim 1 or 2, wherein the bottom bracket assembly comprises an outer bottom bracket, an inner bottom bracket, and a bottom bracket spring;

5. The trigger switch of claim 4,

the spring of the middle shaft is fixed between the inner middle shaft and the outer middle shaft.

6. The trigger switch of claim 1 or 2, wherein the moving contact assembly comprises two sets of moving contacts, two sets of moving contact springs, and moving contacts respectively disposed on the two sets of moving contacts; the static contact component comprises two groups of static contact pins and static contacts respectively arranged on the two groups of static contact pins;

7. The trigger switch of claim 1 or 2, further comprising a first metal sheet and a second metal sheet;

8. The trigger switch of claim 1 or 2,

9. The trigger switch of claim 1 or 2, wherein the trigger switch further comprises a dust boot;

and the push shaft is provided with a return spring.

10. The trigger switch of claim 1 or 2, wherein the trigger includes a trigger frame and a trigger press;

11. The trigger switch of claim 10,

and an eighth through hole is formed in the upper cover, and a second fastener sequentially penetrates through the sixth through hole and the eighth through hole to connect the trigger to the upper cover.