CN215265981U - Long-stroke trigger switch - Google Patents

Abstract

The utility model discloses a long-stroke trigger switch, mainly suitable for the circuit on the electric tool or garden instrument that the operational environment requires more and opens and close, its structure includes the casing, binding post and button on the casing, and the interior electric conduction of casing installs movable contact spring etc. on the bracket, mainly use the middle part as axle center rocker type rotation to install the movable contact spring on the bracket, when the movable contact spring is driven by the button and is made the rocker type and rise or descend, will form the electric conduction with the binding post and open and close, this kind of rotary type electric conduction contact mode is obviously superior to traditional straight line movable electric contact; in addition, a supporting shaft is arranged on the bracket, the middle part of the movable contact piece is assembled on the supporting shaft through a rotating groove, and then the movable contact piece rotates around the supporting shaft in a see-saw type mode.

Description

Long-stroke trigger switch

Technical Field

The utility model relates to a trigger switch specifically is a long stroke trigger switch.

Background

At present, electric tool or garden instrument's operating power requirement is great, the straight reciprocating motion is made on the bracket to the movable contact spring in the during operation mainly through button drive casing, and then constitute electrically conductive opening and close with binding post, just also movable contact spring contact binding post will make and form electrically conductive connection between bracket and the binding post, the movable contact spring breaks away from binding post and will make electrically conductive disconnection between bracket and the binding post, and the discovery in-service use, the electrically conductive mode of action of this kind of rectilinear movement can bring great electrical wear for the movable contact spring, also cause the temperature rise too high easily, so there is very big electric contact potential safety hazard.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art's defect and provide a canned type trigger switch that the electrical contact is good, the temperature rise is low, safe in utilization.

The technical problem of the utility model is realized through following technical scheme:

the utility model provides a long stroke trigger switch, includes binding post and the button on casing, the casing to and electrically conductive movable contact spring of installing on the bracket in the casing, movable contact spring use the middle part as the axle center rocker formula and rotate and install on the bracket, this movable contact spring receives the button drive to make the rocker formula rise or descend, and then with binding post constitutes electrically conductive opening and close.

The movable contact piece is arranged on the bracket, a rotating groove is formed in the middle of the movable contact piece, the movable contact piece is assembled on the supporting shaft, the movable contact piece rotates around the supporting shaft in a see-saw mode through the rotating groove, and the movable contact piece is in conductive connection with the bracket through the supporting shaft.

The movable contact piece is a bending plate, and the rotary groove is arranged on the bending protruding part of the movable contact piece.

One end of the bracket extends into the shell and is provided with a bracket for mounting the supporting shaft, and the other end of the bracket extends out of the shell and is exposed.

The shell is internally provided with a boss for limiting the seesaw type rotation stroke of the movable contact piece.

One side of the button is provided with a sliding block thimble which elastically pushes and contacts the movable contact piece, and the sliding block thimble is driven by the button to reciprocate along the movable contact piece and drive the movable contact piece to ascend or descend in a seesaw mode.

One end of the wiring terminal extends into the shell and is provided with a stationary contact, and the other end of the wiring terminal extends out of the shell and is exposed; one end of the movable contact piece adjacent to the static contact is provided with a movable contact which is lifted or descended by a rocker of the movable contact piece to form conductive opening and closing with the static contact.

The shell is provided with a button hole seat for the movable installation of the button, the button is sleeved with a sealing sleeve, the outer end of the sealing sleeve is connected to the button in a circumferential sealing mode, and the inner end of the sealing sleeve is connected to the outside of the button hole seat in a circumferential sealing mode.

Compared with the prior art, the utility model mainly installs the movable contact on the bracket in a seesaw type rotation mode by taking the middle part as the axis, when the movable contact is driven by the button to ascend or descend in the seesaw type, the movable contact and the wiring terminal form a conductive opening and closing, and the rotary type conductive contact mode has better performance compared with the traditional linear movable type electric contact obviously; in addition, a supporting shaft is arranged on the bracket, the middle part of the movable contact piece is assembled on the supporting shaft through a rotating groove, and then the movable contact piece rotates around the supporting shaft in a see-saw type mode.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

Fig. 2 is an external view of fig. 1.

Fig. 3 is a schematic structural diagram of the bottom case.

Fig. 4 is a schematic structural diagram of the movable contact piece.

Fig. 5 is a schematic structural view of the bracket.

Fig. 6 is a schematic structural diagram of the button.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in fig. 1 to 6, 1, a shell, 11, a bottom shell, 12, a face shell, 13, a boss, 14, a button hole seat, 2, a connecting terminal, 21, a fixed contact, 3, a movable contact, 31, a movable contact, 32, a rotary groove, 4, a bracket, 41, a supporting shaft, 42, a bracket, 5, a button, 51, a spring hole, 6, a sealing sleeve, 61, an inner ring rib, 7, a slider thimble, 8, a button spring, 9, a thimble spring, 10, and an outer ring groove.

A long-stroke trigger switch is mainly suitable for opening and closing a circuit on an electric tool or a garden tool with higher requirements on working environment as shown in figures 1 and 2, and structurally comprises a shell 1, a wiring terminal 2 and a button 5 on the shell, and a movable contact piece 3 which is arranged on a bracket 4 in the shell 1 in a conductive mode.

The housing 1 is composed of a bottom case 11 with a hollow structure and a face case 12 covering the bottom case in a sealing manner, and various components in the housing 1 are sealed and enclosed by the bottom case 11 and the face case 12 in a sealing manner.

One end of the wiring terminal 2 extends into the shell 1 and is internally provided with a stationary contact 21, and the other end of the wiring terminal extends out of the shell 1 and is exposed so as to facilitate wiring; the movable contact piece 3 uses the middle part as the axle center and the rocker type rotates and is installed on the bracket 4, which is specifically as follows: one end of the bracket 4 extends into the casing 1 to form a bracket 42, a support shaft 41 fixed by welding is arranged in the bracket, and the other end of the bracket 4 extends out of the casing 1 to be exposed so as to facilitate wiring.

The moving contact piece 3 is a bending plate as shown in fig. 4, the bending protruding part of the moving contact piece 3 is provided with a rotating groove 32, the moving contact piece 3 is assembled on the supporting shaft 41 through the middle rotating groove 32, the axial lead of the rotating groove 32 is just parallel to the axial lead of the supporting shaft 41, so that the moving contact piece 3 can form a seesaw type rotation around the supporting shaft 41 through the rotating groove 32, and the moving contact piece 3 also forms a conductive connection with the bracket 4 through the supporting shaft 41.

And the movable contact 3 is driven by the button 5 to make a seesaw type rise or fall, and then forms a conductive opening and closing with the connecting terminal 2, one end of the movable contact 3 adjacent to the fixed contact 21 is also provided with a movable contact 31, that is, the movable contact 31 forms a conductive opening and closing with the fixed contact 21 on the connecting terminal 2 by the seesaw type rise or fall of the movable contact 3.

Meanwhile, a boss 13 as shown in fig. 3 is further provided in the housing 1, and is adjacently disposed at an end of the movable contact piece 3 where the movable contact 31 is not installed, and is mainly used for limiting a seesaw type rotation stroke of the movable contact piece 3.

The button 5 is movably arranged in a button hole seat 14 arranged on the shell 1, the button hole seat is a cylindrical hollow seat protruding on the outer surface of the shell 1, and a sealing sleeve 6 is sleeved outside the button 5.

The sealing sleeve 6 is a corrugated pipe rubber sleeve, the outer end of the sealing sleeve 6 is embedded in the outer ring groove 10 on the outer circumferential surface of the button 5 through an inner ring rib 61 to form circumferential sealing connection, and the inner end of the sealing sleeve 6 is embedded in the outer ring groove 10 on the outer circumferential surface of the button hole seat 14 through the inner ring rib 61 to form circumferential sealing connection; therefore, the gap at the button 5 can be completely sealed, and the influence on the safe use caused by the impurities such as dust entering the interior of the trigger switch can be effectively prevented.

In addition, a button spring 8 is arranged in the shell 1, one end of the button spring is elastically pushed and installed in a spring hole 51 at the inner end of the button 5, and the other end of the button spring is elastically pushed and installed in the shell 1, so that the button 5 always has the tendency of moving outwards under the elastic pushing of the button spring 8 in a normal state, and the elastic reset effect of the button 5 is mainly achieved.

The shell 1 is also internally provided with a slide block thimble 7 arranged on one side of the button 5, and the rear end of the slide block thimble is provided with a thimble spring 9, so that the slide block thimble 7 is always elastically pushed to contact the movable contact piece 3 under the normal state by the elastic pushing of the thimble spring.

Therefore, the slider thimble 7 will be driven by the button 5 to reciprocate along the movable contact piece 3, and the movable contact piece 3 will be driven to rise or fall in a seesaw manner.

The working process of the trigger switch is as follows: the button is pushed outwards by the 5 button spring 8 in a normal state, and the sliding block thimble 7 contacting with the movable contact piece 3 does not drive the movable contact piece 3 to form a seesaw type rotation, namely the movable contact 31 on the movable contact piece 3 and the static contact 21 on the connecting terminal 2 are in a disconnection power-off state; when the press button 5 moves inwards against the elastic force of the button spring 8, the slide block thimble 7 is driven to move towards one end of the movable contact 31 along the movable contact piece 3, and then one end of the movable contact 31 is driven to form a seesaw type descending, and the movable contact can contact with the static contact 21 to form a conduction; on the contrary, as long as the pressing force on the button 5 is released, the button spring 8 pushes the button 5 to elastically reset, and the electric conduction between the movable contact 31 and the fixed contact 21 is re-opened.

The utility model discloses a movable contact spring 3 is on the back shaft 41 of bracket 4 is joined in marriage through the runner 32 at middle part, and then forms wane formula pivoted around back shaft 41, and this kind of rotary type conductive contact mode is compared traditional straight line movable type electrical contact and is obviously better can, can also better reduce movable contact spring 3's electrical wear, reduce the temperature rise and guarantee the safety in utilization.

The above description is only an embodiment of the present invention, and those skilled in the art should understand that any structural design similar to the embodiment is included in the protection scope of the present invention.

Claims (8)

1. The long-stroke trigger switch comprises a shell (1), a wiring terminal (2) and a button (5) on the shell, and a movable contact piece (3) which is arranged on a bracket (4) in the shell (1) in a conductive manner, and is characterized in that the movable contact piece (3) is arranged on the bracket (4) in a see-saw type rotating manner by taking the middle part as an axis, and the movable contact piece (3) is driven by the button (5) to ascend or descend in a see-saw type manner, so that the movable contact piece and the wiring terminal (2) form conductive opening and closing.

2. A long stroke trigger switch according to claim 1 wherein the bracket (4) is provided with a support shaft (41), the movable contact (3) is provided at its middle portion with a rotary slot (32) fitted to the support shaft (41), and the movable contact (3) is formed to swing around the support shaft (41) through the rotary slot (32) and is electrically connected to the bracket (4) through the support shaft (41).

3. A long trigger switch according to claim 2, wherein the movable contact piece (3) is a bent plate, and the rotary groove (32) is provided in a bent projection of the movable contact piece (3).

4. A long stroke trigger switch according to claim 2 wherein one end of the bracket (4) extends into the housing (1) to form a receiving seat (42) for receiving the support shaft (41) and the other end extends out of the housing (1) to be exposed.

5. A long stroke trigger switch according to claim 1 wherein the housing (1) is provided with a boss (13) for limiting the seesaw type rotation stroke of the movable contact (3).

6. A long stroke trigger switch according to claim 1 wherein one side of the button (5) is provided with a slider pin (7) which elastically pushes and contacts the movable contact piece (3), the slider pin is driven by the button (5) to reciprocate along the movable contact piece (3) and drives the movable contact piece (3) to rise or fall in a seesaw manner.

7. A long stroke trigger switch according to claim 1 wherein one end of the connecting terminal (2) is extended into the housing (1) to form a stationary contact (21), and the other end is extended out of the housing (1) to be exposed; one end of the movable contact piece (3) adjacent to the fixed contact (21) is provided with a movable contact (31), and the movable contact is lifted or descended by a rocker of the movable contact piece (3) to form conductive opening and closing with the fixed contact (21).

8. A long stroke trigger switch according to claim 1 wherein the housing (1) is provided with a button hole seat (14) for movably mounting the button (5), the button (5) is externally sleeved with a sealing sleeve (6), the outer end of the sealing sleeve is circumferentially and hermetically connected to the button (5), and the inner end of the sealing sleeve is circumferentially and hermetically connected to the outside of the button hole seat (14).

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