Trigger switch with self-locking structure

Abstract

The utility model relates to the technical field of trigger switches, and particularly discloses a trigger switch with a self-locking structure. The switch comprises a trigger, a shell, a push button mechanism, a locking piece, a movable frame, a moving contact and a static contact piece, the movable frame comprises a connecting rod and a movable seat, the locking piece is provided with a cavity for the movable seat to pass through, and a vertically staggered buckling structure is arranged between the locking piece and the movable seat; when the trigger is driven to enable the movable frame to move downwards and the push button mechanism is driven to enable the locking piece to move, the locking piece corresponds to the buckling structure between the movable seat, the trigger reset piece and the push button reset piece drive the buckling structure to be locked, the movable seat limits the push button mechanism to move, and the locking piece and the movable frame are in a self-locking state. According to the utility model, the locking piece and the movable frame can be mutually locked through the buckling structure, so that the push button mechanism is locked and cannot move when the trigger switch is in a self-locking state, thereby ensuring the stability of the self-locking effect of the trigger switch.

Description

Technical Field

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

[0002] A trigger switch is a common switch structure, which can be quickly connected or disconnected by an operator pressing a trigger. Currently, some trigger switches also have button safety functions and self-locking functions.

[0003] 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 a pressed state. Pressing the locking button again can unlock the trigger, and the trigger can be quickly popped up under the action of the trigger reset member, thereby ensuring the speed of disconnection of the trigger switch. In the process of locking and unlocking the trigger, the trigger operation procedure is simplified, making the operation of the trigger switch easier.

[0004] However, since this type of trigger switch sets the moving contact on the locking piece, the locking piece self-locks the movable frame through the push button mechanism of the automatic pen structure. Even in the self-locking state, the push button mechanism can still be activated by external force. When the trigger switch is used in a vibrating environment, or the operator accidentally touches the push button mechanism, the vibration or shaking of the push button mechanism makes it possible for the locking piece connected to the push button mechanism to vibrate or shake, resulting in poor contact between the moving contact set on the locking piece and the conductor set on the circuit board, resulting in the self-locking signal being blocked or seeming to be connected. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a trigger switch with a self-locking structure.

[0006] The utility model discloses a trigger switch with a self-locking structure, which adopts the following technical scheme:

[0007] A trigger switch with a self-locking structure, comprising a trigger, a housing, a push button mechanism, a locking piece 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 piece is connected between the bottom and the housing; the push button mechanism is slidably inserted in the housing, one end of the locking piece is connected to the push button mechanism, and the other end of the locking piece is connected to the push button reset piece; a static contact piece is provided in the housing, the push button mechanism pushes the locking piece to drive the moving contact to move, and the moving contact is connected or disconnected with the static contact piece; the movable frame comprises a connecting rod and a movable seat, the connecting rod is connected to the movable seat and extends outside the housing to connect with the trigger; The movable seat is arranged in the shell; a cavity for the movable seat to pass through is provided on the locking member, and a buckling structure that is staggered up and down is provided between the locking member and the movable seat; when the trigger is driven to move the movable frame downward, and the push button mechanism is driven to move the locking member, the buckling structure between the locking member and the movable seat corresponds to each other, the trigger reset member and the push button reset member drive the buckling structure to lock, the movable seat restricts the movement of the push button mechanism, and the locking member and the movable frame are in a self-locking state; when the trigger is pressed to unlock the buckling structure, the trigger reset member and the push button reset member drive the movable frame and the locking member to reset, the cavity on the locking member is suitable for the passage of the movable seat, and the locking member and the movable frame are in an unlocked state.

[0008] Preferably, the locking member comprises a locking block, a connecting plate and a spring seat, the locking block and the spring seat are connected by the connecting plate to form the cavity, the locking block has the buckling structure, and the push button reset member is arranged on the spring seat.

[0009] Preferably, the locking block is provided with a column, the column having an outer wall, an inner wall and a side wall, the inner wall faces the spring seat, the outer wall faces away from the spring seat, and the side wall is adjacent to between the inner wall and the outer wall and faces downward.

[0010] Preferably, the buckling structure includes: a first locking block arranged on the column and protruding from the side wall, and a first locking buckle arranged on the movable seat; the first locking buckle protrudes from the top of the movable seat; the first locking block and the first locking buckle are buckled together.

[0011] Preferably, the movable seat is provided with an avoidance gap, a locking arm is formed above the avoidance gap, and the first lock buckle is arranged on the top surface of the locking arm; when the locking member and the movable frame are in an unlocked state, the column is opposite to the avoidance gap, and the push button mechanism pushes the column of the locking block into the avoidance gap.

[0012] Preferably, a third groove is provided on the movable seat, and the third groove is connected to the first lock buckle and is recessed. When the first locking block is engaged with the first lock buckle, the first locking block is located in the third groove.

[0013] Preferably, the buckling structure includes: a second locking block protruding from the locking block, and a second locking buckle protruding from the movable seat; the second locking block is located at the connection between the locking block and the connecting plate and close to the spring seat; the second locking block and the second locking buckle are buckled together.

[0014] Preferably, a first groove is provided on the locking block, and the first groove is connected to the second locking block and is recessed; a second groove is provided on the movable seat, and the second groove is connected to the second locking buckle and is recessed; when the second locking block is engaged with the second locking buckle, the second locking block is in the second groove, and the second locking buckle is in the first groove.

[0015] Preferably, the spring seat is provided with a spring countersunk hole outwardly, and the end of the push button reset member is arranged in the spring countersunk hole.

[0016] Preferably, the locking block is provided with a limiting surface, the limiting surface faces the spring seat, the movable seat is provided with a blocking block, and the locking member is pushed by the push button mechanism until the limiting surface abuts against the blocking block.

[0017] Compared with the prior art, the utility model has at least the following beneficial effects:

[0018] Different from the existing push button structure, the locking member and the movable frame of the utility model can be mutually locked through the buckle structure, so that when the trigger switch is in the self-locking state, the push button mechanism is locked and cannot move. Even in the event of external vibration or accidental touch, the push button mechanism will not be affected, so that the moving contact on the locking member connected to the push button mechanism will not move relative to the static contact, thereby ensuring the stability of the self-locking effect of the trigger switch. In addition, different from the existing automatic pen push button mechanism that can be pressed at will, once the push button mechanism of this solution is locked by the movable frame and cannot move, the operator can determine whether the trigger switch is successfully self-locked by detecting whether the push button mechanism can be pressed, making the operation of the trigger switch more reliable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the trigger switch with a self-locking structure of this embodiment;

[0020] Figure 2 is an exploded view of the trigger switch with a self-locking structure of this embodiment;

[0021] Figure 3This is a schematic diagram of the movable frame structure of the trigger switch with a self-locking structure of this embodiment;

[0022] Figure 4 This is a schematic structural diagram of the movable frame of the trigger switch with a self-locking structure of this embodiment from another angle;

[0023] Figure 5 Schematic diagram of the locking member structure of the trigger switch with a self-locking structure of this embodiment;

[0024] Figure 6 It is a schematic diagram of the connection structure of the locking member and the movable frame of the trigger switch with a self-locking structure of this embodiment;

[0025] Figure 7 This is a schematic structural diagram of the locking member of the trigger switch with a self-locking structure in another angle of this embodiment;

[0026] Figure 8 It is a schematic diagram of the locking member and the movable frame connection structure of the trigger switch with a self-locking structure of this embodiment from another angle;

[0027] Fig. 9 is a side cross-sectional view of the trigger switch with a self-locking structure of this embodiment (process one);

[0028] Fig.10 2 is a top cross-sectional view of the trigger switch with a self-locking structure of the present embodiment (process one);

[0029] Fig.11 for Fig.10 Partial cross-sectional view of CC (process one);

[0030] Fig.12 for Fig. 9 A magnified view of;

[0031] Fig.13 for Fig.11 B enlarged view;

[0032] Fig.14 is a side cross-sectional view of the trigger switch with a self-locking structure of this embodiment (process 2);

[0033] Fig.15 2 is a top cross-sectional view of the trigger switch with a self-locking structure of the present embodiment (process 2);

[0034] Fig.16 for Fig.15 Partial cross-sectional view of CC (process 2);

[0035] Fig.17 is a side cross-sectional view of the trigger switch with a self-locking structure of this embodiment (process three);

[0036] Fig.18 2 is a top cross-sectional view of the trigger switch with a self-locking structure of this embodiment (process three);

[0037] Fig.19 for Fig.18 Partial cross-sectional view of CC (process three);

[0038] Fig. 20 is a side cross-sectional view of the trigger switch with a self-locking structure of this embodiment (process four);

[0039] Fig.21 4 is a top cross-sectional view of the trigger switch with a self-locking structure of this embodiment (process four);

[0040] Fig. 22 for Fig.21 Partial cross-sectional view of CC (process four);

[0041] Fig.23 for Fig. 20 D enlarged image;

[0042] Fig.24 for Fig. 22 Enlarged view of E.

[0043] Description of Figure Numbers:

[0044] 1. Housing; 11. Circuit board; 12. Moving contact;

[0045] 2. Trigger; 21. Trigger reset member;

[0046] 3. Push button mechanism; 31. Push button reset member;

[0047] 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; 426. avoidance gap;

[0048] 5. Locking piece; 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. DETAILED DESCRIPTION

[0049] 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.

[0050] This embodiment discloses a trigger switch with a self-locking structure. Figure 1-2, 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 12. The trigger 2 is movably connected to the housing 1, 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 connected to the push button mechanism 3, and the other end of the locking member 5 is connected to a push button reset member 31. A circuit board 11 with a static contact piece is arranged in the housing 1, and the push button mechanism 3 pushes the locking member to drive the moving contact 12 to move, and the moving contact 12 is connected or disconnected with the static contact piece.

[0051] In the existing trigger switches of the same type, the push button mechanism adopts a structure similar to that of an automatic pen to achieve a self-locking function. However, in the self-locking state, the push button mechanism can still be actuated by external force. As a result, when the trigger switch is used in a vibrating environment, the push button mechanism is prone to shaking, which is transmitted to the moving contact 12 through the locking member 5, causing the moving contact 12 to shake and cause a poor contact with the circuit board 11.

[0052] In order to overcome the problem that the self-locking effect of the existing trigger switch is unstable, the trigger switch with a self-locking structure disclosed in this embodiment is Figure 3-8 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 shell 1 to be connected to the trigger 2. The movable seat 42 is arranged in the shell 1. A cavity for the movable seat 42 to pass through is provided on the locking member, and a buckling structure with an upper and lower offset is provided between the locking member and the movable seat 42.

[0053] When the trigger 2 is driven to move the movable frame 4 downward, and the push button mechanism 3 is driven to move the locking piece, at this time, the buckling structure between the locking piece and the movable seat 42 corresponds, the trigger reset piece 21 and the push button reset piece 31 drive the buckling structure to lock, the movable seat 42 limits the movement of the push button mechanism 3, and the locking piece and the movable frame 4 are in a self-locking state; when the trigger 2 is pressed to unlock the buckling structure, the trigger reset piece 21 and the push button reset piece 31 drive the movable frame 4 and the locking piece to reset, the cavity on the locking piece is suitable for the passage of the movable seat 42, and the locking piece and the movable frame 4 are in an unlocked state.

[0054] Different from the existing automatic pen push button mechanism, the locking part and the movable frame 4 of this solution are interlocked by a snap-fit ​​structure, which not only can lock the push button mechanism and prevent it from shaking due to external vibration, but also avoid the instability of the self-locking signal caused by the relative movement between the moving contact and the static contact piece. In addition, since the existing automatic pen structure can be pressed in any state, in the special case where it is impossible to observe whether the trigger switch is activated, the operator cannot check and determine whether it is in a self-locking state through the push button mechanism. Once the push button mechanism 3 of this solution is locked by the movable frame 4 and cannot move, the operator can know that the trigger switch has been self-locked, thereby having a detection and judgment function, making the operation of the trigger switch more reliable and safe.

[0055] In this embodiment, refer to Figure 5-6 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. The push button reset member 31 is specifically a spring, and the spring seat 53 is provided with a spring countersunk hole 531 facing outward. The spring end of the push button reset member 31 is arranged in the spring countersunk hole 531, so that the extension and contraction process of the push button reset member 31 has a guide protection, thereby improving the reliability and service life of the push button reset member 31.

[0056] In this embodiment, the buckle structure includes: a first locking block 511 protruding from the locking block 51, and a first locking buckle 421 protruding from the movable seat 42. Referring to the figure, a column 515 is provided on the locking block 51, and the column 515 has an outer wall 516, an inner wall 517 and a side wall 518, the inner wall 517 faces the spring seat 53, the outer wall 516 faces away from the spring seat 53, and the side wall 518 is adjacent to the inner wall 517 and the outer wall 516 and faces downward. The first locking block 511 is provided on the column 515 and protrudes from the side wall 518. The movable seat 42 is provided with an avoidance notch 426, and a locking arm is formed above the avoidance notch 426. The first locking buckle 421 is provided on the top surface of the locking arm so as to protrude from the top of the movable seat 42.

[0057] When the locking member and the movable frame 4 are in the initial unlocking state, the first lock buckle 421 and the first lock block 511 are misaligned up and down, and the column 515 is opposite to the avoidance gap 426. The push button mechanism 3 pushes the column 515 of the lock block 51 to enter the avoidance gap 426. When the trigger 2 is pressed to move downward and push the push button mechanism 3, the column 515 is above the locking arm of the movable seat 42. Releasing the trigger 2 can make the first lock block 511 and the first lock buckle 421 cooperate and buckle. By setting the column 515 of the locking block 51 to cooperate with the avoidance gap 426 of the movable seat 42, the use of the trigger switch has a positioning function. When the operator needs to start the trigger switch and presses the trigger 2, it can be determined whether the trigger 2 is pressed in place by judging whether the column 515 can be pushed forward (without being blocked by the locking arm), so that the buckling structure can be smoothly locked. In addition, the trigger switch also has a detection and judgment function. When the trigger 2 is not pressed, the column 515 of the locking member can be moved into the avoidance gap 426, and the push button mechanism 3 is in a pushable state, which is different from the state where the push button mechanism 3 is locked and cannot be pressed when self-locking, thereby better detection and judgment can be made.

[0058] In this embodiment, the buckling structure may further include: a second locking block 512 protruding from the locking block 51, and a second locking buckle 422 protruding from the movable seat 24. 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 second locking buckle 422 is arranged on the other side adjacent to the side of the movable seat 42 where the first locking buckle 421 is located. The second locking block 512 is buckled with the second locking buckle 422. When the locking member and the movable frame 4 are in the initial unlocking state, the second locking buckle 422 and the second locking block 512 are misaligned up and down. When the trigger 2 is pressed to move downward and push the push button mechanism 3, the trigger 2 is released to make the second locking buckle 422 and the second locking block 512 buckle. The second locking buckle 422 and the second locking block 512 are mutually locked, and the first locking buckle 421 and the first locking block 511 are mutually locked. The increase of the locking part makes the force balanced, which can make the locking between the locking member and the movable frame 4 more stable and reliable.

[0059] In this embodiment, the movable seat 42 is provided with a third groove 424, which is connected to the first lock buckle 421 and is recessed. When the first locking block 511 is engaged with the first lock buckle 421, the first locking block 511 is located in the third groove 424. The locking block 51 is provided with a first groove 513, which is connected to the second locking block 512 and is recessed. The movable seat 42 is provided with a second groove 423, which is connected to the second lock buckle 422 and is recessed. When the second locking block 512 is engaged with the second lock buckle 422, the second locking block 512 is located in the second groove 423, and the second lock buckle 422 is located in the first groove 513. By providing the first groove 513, the second groove 423 and the third groove 424, the buckling depth is increased and the buckling stability is improved.

[0060] In this embodiment, the movable seat 42 is provided with a block 425, which is located at a side connected to the second groove 423; the column 515 is provided with a limiting surface 514, which is connected to the second locking block 512 and faces one side of the spring seat 53. When the movable frame 4 is kept in a state of being pressed down by force, the push button mechanism 3 is pushed to drive the locking member 5 to move until the limiting surface 514 on the locking block 51 abuts against the block 425 on the movable seat 42, so that the locking member 5 is blocked and cannot move, which plays a role in reminding the operator that the push button mechanism 3 is pushed into place.

[0061] The operation process of the trigger switch with a self-locking structure of this embodiment is as follows:

[0062] Process 1:

[0063] Reference Figure 9-11 In the initial 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, and 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 dislocated position (refer to Fig.12 ), the second locking buckle 422 of the movable frame 4 and the second locking block 512 of the locking member 5 are in a vertically dislocated position (refer to Fig.13 ), 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 a non-locking state.

[0064] Process 2:

[0065] 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 anymore. 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 and the third groove 424 of the movable frame 4 are all in the vertically dislocated position, 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 the vertically dislocated 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 the unlocked state.

[0066] Process three:

[0067] 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 limit surface 514 on the lock 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 moving contact 12 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.

[0068] Process 4:

[0069] Reference Figure 20-22 , the force on the push button mechanism 3 is maintained, and the force on the movable frame 4 is released. The movable frame 4 moves toward the outside of the switch housing 1 under the action of the trigger reset member 21, and the locking member also moves toward the outside of the housing 1 under the push button reset member 31. 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 12 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.

[0070] Process Five:

[0071] 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).

[0072] In this way, the trigger switch with a self-locking structure of the present application pushes the push button mechanism 3 after the trigger 2 is pressed. Under the joint action of the trigger reset member 21 and the push button reset member 31, the movable frame 4 and the locking member are locked with each other, so that the push button mechanism 3 is restricted and cannot move. Even if external vibration or accidental touch occurs, the push button mechanism 3 cannot shake, thereby stabilizing the self-locking effect of the trigger switch and avoiding the influence on the conduction of the switch.

[0073] 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 self-locking structure, comprising a trigger, a housing, a push button mechanism, a locking piece 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 piece is connected between the bottom and the housing; the push button mechanism is slidably inserted in the housing, one end of the locking piece is connected to the push button mechanism, and the other end of the locking piece is connected to a push button reset piece; a static contact piece is provided in the housing, the push button mechanism pushes the locking piece to drive the moving contact to move, and the moving contact is connected or disconnected with the static contact piece; characterized in that The movable frame includes a connecting rod and a movable seat, wherein the connecting rod is connected to the movable seat and extends outside the housing to be connected to the trigger; the movable seat is arranged in the housing; a cavity for the movable seat to pass through is arranged on the locking member, and a buckling structure staggered up and down is arranged between the locking member and the movable seat; When the trigger is driven to move the movable frame downward, and the push button mechanism is driven to move the locking member, the locking member corresponds to the buckling structure between the movable seat, the trigger reset member and the push button reset member drive the buckling structure to lock, the movable seat restricts the movement of the push button mechanism, and the locking member and the movable frame are in a self-locking state; When the trigger is pressed to unlock the buckling structure, the trigger reset member and the push button reset member drive the movable frame and the locking member to reset, the cavity on the locking member is suitable for the passage of the movable seat, and the locking member and the movable frame are in an unlocked state.

2. A trigger switch with a self-locking structure according to claim 1, characterized in that: The locking member comprises a locking block, a connecting plate and a spring seat. The locking block and the spring seat are connected by the connecting plate to form the cavity. The locking block is provided with the buckling structure. The push button reset member is arranged on the spring seat.

3. A trigger switch with a self-locking structure according to claim 2, characterized in that: The locking block is provided with a column, and the column has an outer wall, an inner wall and a side wall, wherein the inner wall faces the spring seat, the outer wall faces away from the spring seat, and the side wall is adjacent to between the inner wall and the outer wall and faces downward.

4. A trigger switch with a self-locking structure according to claim 3, characterized in that: The buckling structure includes: a first locking block arranged on the column and protruding from the side wall, and a first locking buckle arranged on the movable seat; the first locking buckle protrudes from the top of the movable seat; the first locking block and the first locking buckle are matched and buckled.

5. The trigger switch with a self-locking structure according to claim 4, characterized in that: The movable seat is provided with an avoidance gap, a locking arm is formed above the avoidance gap, and the first lock buckle is arranged on the top surface of the locking arm; when the locking member and the movable frame are in an unlocked state, the column is opposite to the avoidance gap, and the push button mechanism pushes the column of the locking block into the avoidance gap.

6. The trigger switch with a self-locking structure according to claim 4, characterized in that: The movable seat is provided with a third groove, the third groove is connected to the first lock buckle and is recessed, and when the first locking block is engaged with the first lock buckle, the first locking block is located in the third groove.

7. The trigger switch with a self-locking structure according to claim 2, characterized in that: The buckling structure includes: a second locking block protruding from the locking block, and a second locking buckle protruding from the movable seat; the second locking block is located at the connection between the locking block and the connecting plate and close to the spring seat; the second locking block and the second locking buckle are buckled in cooperation.

8. The trigger switch with a self-locking structure according to claim 7, characterized in that: The locking block is provided with a first groove, which is connected to the second locking block and is recessed; the movable seat is provided with a second groove, which is connected to the second locking buckle and is recessed; when the second locking block is engaged with the second locking buckle, the second locking block is located in the second groove, and the second locking buckle is located in the first groove.

9. The trigger switch with a self-locking structure according to claim 2, characterized in that: The spring seat is provided with a spring countersunk hole outwardly, and the end of the push button reset piece is arranged in the spring countersunk hole.

10. The trigger switch with a self-locking structure according to claim 2, characterized in that: The locking block is provided with a limiting surface, the limiting surface faces the spring seat, the movable seat is provided with a blocking block, and the locking member is pushed by the push button mechanism until the limiting surface abuts against the blocking block.

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