Trigger switch with stable self-locking signal

Abstract

The utility model relates to the technical field of trigger switches, and particularly discloses a trigger switch with stable self-locking signals. The device comprises a trigger, a shell, a push button mechanism, a locking piece, a moving contact, a contact seat and a contact elastic piece, the contact seat is arranged in the shell in a sliding mode, and the moving contact is arranged on the contact seat and moves along with the contact seat; the contact elastic piece is arranged between the shell and the contact seat, and the contact elastic piece drives the contact seat to move in the shell; the push button mechanism pushes the locking piece to move so as to release the limitation on the contact seat, the contact elastic piece releases elasticity and drives the contact seat to move, and the moving contact moves and is connected with the static contact piece; the push button mechanism relieves the acting force on the locking piece, the push button reset piece drives the locking piece to push the contact seat to move, and the moving contact is separated from the static contact piece. According to the utility model, by arranging the contact seat and the contact elastic piece, the vibration or shaking of the push button mechanism does not influence the conduction between the moving contact and the static contact piece, thereby ensuring the normal use of equipment and prolonging the service life of the switch.

Description

Technical Field

[0001] The utility model relates to the technical field of trigger switches, and particularly discloses a trigger switch with a stable self-locking signal. Background Art

[0002] The existing trigger switch of the same type sets the moving contact directly on the locking member, and the locking member self-locks the movable frame through the push button mechanism of the automatic pen structure. For example, the trigger switch disclosed in patent number CN209199821U includes a housing, a trigger, a movable frame, a trigger reset member and a locking button. After pressing the trigger, the trigger can be locked in a preset position by pressing the locking button, so that the trigger switch remains in the pressed state. Pressing the locking button again can unlock the trigger, and the trigger is quickly bounced up under the action of the trigger reset member, thereby ensuring the speed of the trigger switch disconnection. In the process of locking and unlocking the trigger, the trigger operation procedure is simplified, making the operation of the trigger switch easier.

[0003] However, the current trigger switch still has some defects. When the trigger switch is used in a vibrating environment, the vibration or shaking of the push button mechanism may cause the locking member connected to the push button mechanism to vibrate or shake, resulting in poor contact between the moving contact integrally provided on the locking member and the conductor provided on the circuit board, resulting in a self-locking signal that is not connected or seems to be connected. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a trigger switch with a stable self-locking signal.

[0005] The utility model discloses a trigger switch with a stable self-locking signal, which adopts the following technical scheme:

[0006] A trigger switch with a stable self-locking signal, comprising a trigger, a housing, a push button mechanism, a locking member and a moving contact; the trigger is movably connected to the housing, a movable frame is movably inserted on the housing, the top of the movable frame is connected to the trigger, and a trigger reset member is connected between the bottom and the housing; the push button mechanism is slidably inserted in the housing, one end of the locking member is linked to the push button mechanism, and the other end of the locking member is connected to a push button reset member, and the push button mechanism cooperates with the trigger to drive the change of the locking and unlocking states between the locking member and the movable frame;

[0007] Also includes:

[0008] A contact seat, wherein the contact seat is slidably arranged in the housing, a static contact piece is arranged in the housing, and the moving contact is arranged on the contact seat and moves with the static contact piece to connect or disconnect with the static contact piece; a limiting device is arranged between the locking member and the contact seat;

[0009] A contact elastic member, wherein the contact elastic member is disposed between the housing and the contact seat, and the contact elastic member drives the contact seat to move toward one side in the housing;

[0010] The push button reset member drives the locking member to move, and drives the contact seat to compress the contact elastic member through the limit device, so that the moving contact on the contact seat is separated from the static contact piece; the push button mechanism pushes the locking member to move and releases the limit of the contact seat by the limit device, and the contact elastic member releases its elasticity and drives the contact seat to move, and the moving contact follows the movement of the contact seat and is connected with the static contact piece;

[0011] or,

[0012] The push button reset member drives the locking member to move, and drives the contact seat to compress the contact elastic member through the limit device, so that the moving contact on the contact seat is connected with the static contact piece; the push button mechanism pushes the locking member to move and releases the limit of the contact seat by the limit device, the contact elastic member releases its elasticity and drives the contact seat to move, and the moving contact follows the movement of the contact seat and is separated from the static contact piece.

[0013] Preferably, a base is provided in the housing, the base is arranged on the locking member, and the contact seat is slidably arranged in the housing through the base.

[0014] Preferably, the limiting device includes a protrusion and a stopper, the protrusion is arranged on the contact seat, and the stopper is arranged on the locking member, and the push button reset member drives the stopper of the locking member to abut against the protrusion of the contact seat, so that the contact seat slides on the base and compresses the contact elastic member.

[0015] Preferably, a slide groove is provided on the base, and the protrusion is slidably connected with the slide groove.

[0016] Preferably, the movable frame includes a connecting rod and a movable seat; the connecting rod is connected to the movable seat and extends outside the shell to be connected to the trigger; the movable seat is arranged in the shell, and the locking member has a locking structure that cooperates with the movable seat.

[0017] Preferably, a guide arm is provided on the base, a guide surface is provided on the locking member, and the guide arm moves relatively on the guide surface.

[0018] Preferably, the trigger is pressed down to release the force acting on the locking member, and the push button reset member drives the locking member to move and reset, thereby driving the switching of the connection or separation state between the moving contact and the stationary contact piece.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The utility model arranges a contact seat and a contact elastic member, and arranges the moving contact in the contact seat to follow the movement. Since the locking member and the moving contact are split, not only can the vibration of the push button mechanism be difficult to be transmitted to the moving contact through the locking member, thus avoiding the situation that the conduction is affected by the bad vibration of the moving contact, but also the moving contact can always be pressed tightly by the contact elastic member, thereby having good connection stability, keeping the self-locking signal stable, ensuring the normal use of the equipment, and improving the service life of the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the trigger switch with a stable self-locking signal in this embodiment;

[0022] Figure 2 An exploded view of the trigger switch with a stable self-locking signal of the present embodiment;

[0023] Figure 3 A schematic diagram of the structure of the base and contact seat of the trigger switch with a stable self-locking signal of this embodiment;

[0024] Figure 4 A schematic diagram of the structure of a movable frame of a trigger switch with a stable self-locking signal in this embodiment;

[0025] Figure 5 A schematic structural diagram of the movable frame of the trigger switch with a stable self-locking signal in another angle of this embodiment;

[0026] Figure 6 A schematic diagram of the locking member structure of the trigger switch with a stable self-locking signal in this embodiment;

[0027] Figure 7 A schematic structural diagram of the locking member of the trigger switch with a stable self-locking signal in another angle of this embodiment;

[0028] Figure 8 This is a schematic diagram of the connection structure of the locking member, the movable frame and the base of the trigger switch with a stable self-locking signal of this embodiment;

[0029] Fig. 9 A schematic diagram of the connection structure of the locking member, the movable frame and the base of the trigger switch with a stable self-locking signal of the present embodiment from another angle;

[0030] Fig.10 A side cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process one);

[0031] Fig.11 A top cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process one);

[0032] Fig.12 for Fig.11Partial cross-sectional view of CC (process one);

[0033] Fig.13 for Fig.11 A magnified view of;

[0034] Fig.14 A side cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process 2);

[0035] Fig.15 A top cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process 2);

[0036] Fig.16 for Fig.15 Partial cross-sectional view of CC (process 2);

[0037] Fig.17 A side cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process three);

[0038] Fig.18 A top cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process three);

[0039] Fig.19 for Fig.18 Partial cross-sectional view of CC (process three);

[0040] Fig. 20 A side cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process four);

[0041] Fig.21 A top cross-sectional view of the trigger switch with a stable self-locking signal of the present embodiment (process four);

[0042] Fig. 22 for Fig.21 Partial cross-sectional view of CC (process four);

[0043] Fig.23 for Fig. 20 B enlarged view;

[0044] Fig.24 for Fig. 22 D enlarged view.

[0045] Description of Figure Numbers:

[0046] 1. Shell; 11. Circuit board;

[0047] 2. Trigger; 21. Trigger reset member;

[0048] 3. Push button mechanism; 31. Push button reset member;

[0049] 4. movable frame; 41. connecting rod; 42. movable seat; 421. first lock buckle; 422. second lock buckle; 423. second groove; 424. third groove; 425. blocking block;

[0050] 5. Locking member; 51. Locking block; 511. First locking block; 512. Second locking block; 513. First groove; 514. Limiting surface; 515. Vertical column; 516. Outer wall; 517. Inner wall; 518. Side wall; 52. Connecting plate; 53. Spring seat; 531. Spring countersunk hole; 532. Stopper;

[0051] 6. base; 61. slideway; 62. guide arm.

[0052] 7. Contact seat; 71. Moving contact; 72. Protrusion;

[0053] 8. Contact elastic member. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0055] The present embodiment discloses a trigger switch with a stable self-locking signal, which includes a housing 1, a trigger 2, a push button mechanism 3, a movable frame 4, a locking member 5 and a moving contact 71. The trigger 2 is movably connected to the housing 1, and the movable frame 4 is movably inserted in the housing 1. The top of the movable frame 4 is connected to the trigger 2, and a trigger reset member 21 is connected between the bottom and the housing 1. The push button mechanism 3 is slidably inserted in the housing 1, one end of the locking member 5 is linked to the push button mechanism 3, and the other end of the locking member 5 is connected to a push button reset member 31. The push button mechanism 3 cooperates with the trigger 2 to drive the change of the locking and unlocking states between the locking member 5 and the movable frame 4. The push button mechanism 3 is a prior art, and specific reference is made to patent CN209199821U, which will not be repeated here. In the existing trigger switch of this type, the moving contact is directly arranged on the locking member, and the shaking of the external push button mechanism is transmitted to the moving contact through the locking member, resulting in the shaking of the moving contact and the problem of poor contact with the circuit board.

[0056] In order to overcome the instability of the existing trigger switch self-locking signal, refer to Figure 2 The trigger switch with a stable self-locking signal disclosed in this embodiment also includes a contact seat 7 and a contact elastic member 8. The contact seat 7 is slidably arranged in the housing 1. The moving contact 71 is arranged on the contact seat 7 and moves with it, and is connected or disconnected with the static contact piece on the circuit board 11 arranged in the housing 1. The contact elastic member 8 is arranged between the housing 1 and the contact seat 7, and the contact elastic member 8 drives the contact seat 7 to move toward one side in the housing 1. A limiting device is arranged between the locking member and the contact seat 7, which is used to limit the contact seat 7 by the locking member.

[0057] In the initial state, the push button reset member 31 drives the locking member to move, and drives the contact seat 7 to a position close to the movable frame 4 through the limit device, and compresses the contact elastic member 8 at the same time. At this time, the moving contact 71 on the contact seat 7 is separated from the static contact piece; when the trigger switch is started, the push button mechanism 3 pushes the locking member to move and releases the limit of the contact seat 7 by the limit device, the contact elastic member 8 releases its elasticity and drives the contact seat 7 to move, the moving contact 71 follows the movement of the contact seat 7 and is connected with the static contact piece, and provides a self-locking signal when it is turned on; when the trigger switch is disconnected, the trigger 2 is pressed down to release the force on the locking member, the push button reset member 31 drives the locking member to push the contact seat 7 to move and reset, the moving contact 71 follows the movement of the contact seat 7 and is disconnected from the static contact piece, and returns to the initial state.

[0058] Different from the existing trigger switch in which the moving contact is directly and integrally arranged on the locking member, the trigger switch of this embodiment arranges a contact seat 7 and a contact elastic member 8 in the housing 1, and arranges the moving contact 71 in the contact seat 7 to follow the movement. Since the contact seat 7 and the locking member 5 are separately arranged and do not interfere with each other, when the trigger switch is used in a vibrating environment, the force generated by the vibration or shaking of the push button mechanism 3 is transmitted to the contact elastic member 8 through the locking member 5 and is buffered, thereby avoiding the occurrence of adverse vibrations directly transmitted to the moving contact 71 that affect the conduction. Moreover, the moving contact 71 is always pressed tightly by the contact elastic member 8 in the contact seat 7, thereby having good connection stability with the static contact piece, so that the self-locking signal can remain stable, thereby improving the performance of the trigger switch.

[0059] Of course, in other embodiments, the on state and the off state can be interchanged by adjusting the position of the static contact piece in the shell, that is, the push button reset member 31 drives the locking member to move, and drives the contact seat 7 to compress the contact elastic member 8 through the limiting device, so that the moving contact 71 follows the movement of the contact seat 7 and is connected with the static contact piece; the push button mechanism 3 pushes the locking member to move and releases the limit of the contact seat by the limiting device, the contact elastic member 8 releases its elasticity and drives the contact seat 7 to move, and the moving contact 71 follows the movement of the contact seat 7 and is separated from the static contact piece.

[0060] In this embodiment, refer to Figure 3-9, a base 6 is provided in the housing 1, the base 6 is located on one side of the locking member 5, the contact seat 7 is slidably connected to the base 6, and the contact seat 7 is slidably arranged in the housing 1 through the base 6, so that assembly is easier to achieve. In addition, the limiting device can be a combination of a protrusion 72 and a stopper 532, the protrusion 72 is arranged on the contact seat 7, the stopper 532 is arranged on the locking member 5, the push button reset member 31 drives the stopper 532 of the locking member 5 to abut against the protrusion 72 of the contact seat 7, so that the contact seat 7 slides on the base 6 and compresses the contact elastic member 8, and a slide groove 61 is provided on the base 6, and the protrusion 72 cooperates with the slide groove 61 to slide and connect. Of course, in other embodiments, a structure for accommodating the sliding of the contact seat can also be integrally provided in the housing to replace the base 6.

[0061] In this embodiment, refer to Figure 8 A guide arm 62 is provided on the base 6, and a guide surface is provided on the locking member. When the push button mechanism 3 is pressed to drive the locking member to move, or when the push button reset member 31 drives the locking member to reset, the guide arm 62 moves relatively on the guide surface. By providing the guide arm 62 and the guide surface, the movement process of the locking member in the housing 1 is made more stable and reliable.

[0062] In this embodiment, refer to Figure 4-9 The movable frame 4 includes a connecting rod 41 and a movable seat 42. The connecting rod 41 is connected to the movable seat 42 and extends outside the housing 1 to be connected to the trigger 2. The movable seat 42 is arranged in the housing 1. The locking member 5 has a locking structure that cooperates with the movable seat 42, and a cavity is arranged on the locking structure. When the locking member 5 and the movable frame 4 are in an unlocked state, the cavity on the locking structure is suitable for the sliding passage of the movable seat 42; when the locking member 5 and the movable frame 4 are in a locked state, the locking structure is locked with the movable seat 42 to limit the movement of the push button mechanism 3.

[0063] In this embodiment, refer to Figure 6-9 The locking member 5 includes a locking block 51, a connecting plate 52 and a spring seat 53. The locking block 51 and the spring seat 53 are connected by the connecting plate 52 to form a cavity for the movable seat 42 to slide through. The locking structure is arranged on the locking block 51, and the push button reset member 31 is arranged on the spring seat 53. Specifically, the locking block 51 is provided with a first locking block 511, a second locking block 512, a first groove 513, a limiting surface 514 and a column 515. The column 515 has an outer wall 516, an inner wall 517 and a side wall 518. The first locking block 511 is located at the side of the column 515 and connected to the inner wall 517 and protrudes from the side wall 518. The second locking block 512 is located at the connection between the locking block 51 and the connecting plate 52 and is close to the spring seat 53. The first groove 513 is connected to the second locking block 512 and is recessed. The limiting surface 514 is arranged on the side facing the spring seat 53, and the stopper 532 is arranged on the edge of the spring seat 53. Accordingly, refer to Figure 5The movable seat 42 is provided with a first lock buckle 421, a second lock buckle 422, a second groove 423, a third groove 424 and a block 425. The second groove 423 is connected to the second lock buckle 422 and is recessed. The third groove 424 is connected to the first lock buckle 421 and is recessed. The block 425 is connected to the second groove 423. The first lock block 511 is coupled with the first lock buckle 421, and the second lock block 512 is coupled with the second lock buckle 422 to achieve a locked state between the lock block 51 of the locking member 5 and the movable seat 42 of the movable frame 4, so that the push button mechanism 3 is locked without being affected by environmental vibration, and the stability of the self-locking signal is better improved.

[0064] In this embodiment, the contact elastic member 8 is specifically a spring, and a spring countersunk hole 531 is arranged outwardly on the spring seat 53. The spring end of the push button reset member 31 is arranged in the spring countersunk hole 531, so that the extension and retraction process of the contact elastic member 8 has guided protection, thereby improving the reliability and service life of the contact elastic member 8.

[0065] Of course, in other embodiments, the self-locking structure of the trigger switch can also be replaced by the structure of patent CN209199821U, which will not be described in detail in this patent.

[0066] The operation process of the trigger switch with a stable self-locking signal in this embodiment is as follows:

[0067] Process 1:

[0068] Reference Figure 10-12 In the initial state, the stopper 532 of the locking member 5 abuts against the protrusion 72 of the contact seat 7 (refer to Fig.13 ), under the action of the push button reset member 31, the contact seat 7 is driven to be always in the direction close to the movable frame 4. At this time, the contact elastic member 8 is in a compressed state, and the moving contact 71 and the static contact piece on the circuit board 11 are in a disconnected state. The first lock buckle 421 and the second lock buckle 422 of the movable frame 4 are respectively located above the first lock block 511 and the second lock block 512 of the locking member 5. The first lock buckle 421 of the movable frame 4 and the first lock block 511 of the locking member 5 are in a vertically misaligned position, the second lock buckle 422 of the movable frame 4 and the second lock block 512 of the locking member 5 are in a vertically misaligned position, there is no locking relationship between the lock block 51 of the locking member 5 and the movable seat 42 of the movable frame 4, and the movable frame 4 and the locking member 5 are in a non-locked state.

[0069] Process 2:

[0070] Reference Figure 14-16, the movable frame 4 is moved downward by the external force until it reaches the bottom of the housing 1 and cannot move. At this time, the locking member 5 does not move, and the stopper 532 of the locking member 5 still abuts against the protrusion 72 of the contact seat 7, and the moving contact 71 and the static contact piece on the circuit board 11 are in a disconnected state. The first lock buckle 421 and the second lock buckle 422 of the movable frame 4 are respectively located below the first lock block 511 and the second lock block 512 of the locking member 5, and the first lock block 511 of the locking member 5 and the first lock buckle 421 and the third groove 424 of the movable frame 4 are all in a vertically misaligned position, and the second lock block 512 of the locking member 5 and the second lock buckle 422 and the second groove 423 of the movable frame 4 are all in a vertically misaligned position, and there is no locking relationship between the lock block 51 of the locking member 5 and the movable seat 42 of the movable frame 4, and the movable frame 4 and the locking member 5 are in a non-locked state.

[0071] Process three:

[0072] Reference Figure 17-19 , keep the movable frame 4 in a state of being pressed down by force, push the push button mechanism 3 to move, and the push button mechanism 3 pushes the locking member 5 to move until the locking member 5 is blocked by the movable frame 4 and cannot move, that is, the limiting surface 514 on the locking block 51 abuts against the blocking block 425 on the movable seat 42. As the push button mechanism 3 pushes the locking member 5 to move, the stopper 532 releases the limiting of the protrusion 72 of the contact seat 7, so that the contact elastic member 8 is released, and the contact seat 7 is pushed to move on the base 6, and moves to a certain distance, and the moving contact 71 is connected with the static contact piece on the circuit board 11, thereby transmitting the self-locking signal. The first lock buckle 421 and the second lock buckle 422 of the movable frame 4 are respectively located below the first lock block 511 and the second lock block 512 of the locking member 5. The first lock block 511 of the locking member 5 and the first lock buckle 421 of the movable frame 4 are in a vertically displaced position, the first lock block 511 is located directly above the third groove 424, and the first lock buckle 421 is located below the side wall 518 of the column. The second locking block 512 of the locking member 5 and the second locking buckle 422 of the movable frame 4 are in an up-and-down misaligned position, the second locking block 512 is located just above the second groove 423, and the second locking buckle 422 is located below the first groove 513. There is no locking relationship between the locking block 51 of the locking member 5 and the movable seat 42 of the movable frame 4, and the movable frame 4 and the locking member 5 are in an unlocked state.

[0073] Process 4:

[0074] Reference Figure 20-22 , the force on the push button mechanism 3 is maintained, the force on the movable frame 4 is released, and the movable frame 4 moves toward the outside of the switch housing 1 under the action of the trigger reset member 21. The first lock buckle 421 of the movable frame 4 is hooked with the first lock block 511 of the locking member 5 (refer to Fig.23 ), the second lock buckle 422 of the movable frame 4 is connected to the second lock block 512 of the locking member 5 (refer to Fig.24). The force on the push button mechanism 3 is released, the locking block 51 of the locking member 5 and the movable seat 42 of the movable frame 4 are locked with each other, the locking member 5 and the movable frame 4 are in a locked state, that is, the switch is in a self-locking state, the moving contact 71 and the static contact piece on the circuit board 11 are always connected, and the self-locking signal is transmitted when the power is on.

[0075] Process Five:

[0076] During the unlocking process, the movable frame 4 is forced downward, and the first locking block 511 and the second locking block 512 of the locking member 5 are respectively separated from the first locking catch 421 and the second locking catch 422 of the movable frame 4 (similar to processes 3 to 4). Under the force of the push button reset member 31, the locking member 5 moves toward the push button mechanism 3, pushing the push button mechanism 3 to reset together (similar to processes 2 to 3). The force on the movable frame 4 is released, and the movable frame 4 is reset under the action of the trigger reset member 21 (similar to processes 1 to 2).

[0077] In this way, in the trigger switch with a stable self-locking signal of the present application, when the push button mechanism 3 and the locking member 5 are not locked and the movable frame 4 is not subjected to force, the locking member 5 restricts the movement of the contact seat 7, and the moving contact 71 is not connected to the static contact piece; after being locked between the movable frame 4 and the locking member 5, the moving contact 71 arranged on the contact seat 7 is driven by the elastic release force of the contact elastic member 8 and is connected to the static contact piece. At this time, the locking member 5 and the moving contact 71 are separated by the contact elastic member 8 and do not interfere with each other, thereby avoiding the influence of external vibration or shaking factors on the conduction of the switch.

[0078] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A trigger switch with a stable self-locking signal, comprising a trigger, a housing, a push button mechanism, a locking member and a moving contact; the trigger is movably connected to the housing, a movable frame is movably inserted on the housing, the top of the movable frame is connected to the trigger, and a trigger reset member is connected between the bottom and the housing; the push button mechanism is slidably inserted in the housing, one end of the locking member is linked to the push button mechanism, and the other end of the locking member is connected to a push button reset member, and the push button mechanism cooperates with the trigger to drive the change of the locking and unlocking states between the locking member and the movable frame; It is characterized in that Also includes: A contact seat, wherein the contact seat is slidably arranged in the housing, a static contact piece is arranged in the housing, and the moving contact is arranged on the contact seat and moves with the static contact piece to connect or disconnect with the static contact piece; a limiting device is arranged between the locking member and the contact seat; A contact elastic member, wherein the contact elastic member is disposed between the housing and the contact seat, and the contact elastic member drives the contact seat to move toward one side in the housing; The push button reset member drives the locking member to move, and drives the contact seat to compress the contact elastic member through the limit device, so that the moving contact on the contact seat is separated from the static contact piece; the push button mechanism pushes the locking member to move and releases the limit of the contact seat by the limit device, and the contact elastic member releases its elasticity and drives the contact seat to move, and the moving contact follows the movement of the contact seat and is connected with the static contact piece; or, The push button reset member drives the locking member to move, and drives the contact seat to compress the contact elastic member through the limit device, so that the moving contact on the contact seat is connected with the static contact piece; the push button mechanism pushes the locking member to move and releases the limit of the contact seat by the limit device, the contact elastic member releases its elasticity and drives the contact seat to move, and the moving contact follows the movement of the contact seat and is separated from the static contact piece.

2. A trigger switch with a stable self-locking signal according to claim 1, characterized in that: A base is arranged in the shell, the contact seat is slidably connected to the base, and the contact seat is slidably arranged in the shell through the base.

3. A trigger switch with a stable self-locking signal according to claim 2, characterized in that: The limiting device includes a protrusion and a stopper, wherein the protrusion is arranged on the contact seat, and the stopper is arranged on the locking member. The push button reset member drives the stopper of the locking member to abut against the protrusion of the contact seat, so that the contact seat slides on the base and compresses the contact elastic member.

4. A trigger switch with a stable self-locking signal according to claim 3, characterized in that: The base is provided with a slide groove, and the protrusion is slidably connected with the slide groove.

5. The trigger switch with a stable self-locking signal according to claim 1, characterized in that: The movable frame includes a connecting rod and a movable seat; the connecting rod is connected to the movable seat and extends outside the shell to be connected to the trigger; the movable seat is arranged in the shell, and the locking member has a locking structure matched with the movable seat.

6. A trigger switch with a stable self-locking signal according to claim 2, characterized in that: The base is provided with a guide arm, the locking member is provided with a guide surface, and the guide arm moves relatively on the guide surface.

7. The trigger switch with a stable self-locking signal according to claim 1, characterized in that: The trigger is pressed down to release the force acting on the locking member, and the push button reset member drives the locking member to move and reset, thereby driving the switching of the connection or separation state between the moving contact and the stationary contact piece.

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