A forward and reverse gear structure of a trigger switch

Abstract

The utility model discloses a positive and reverse rotation gear structure of trigger switch, it includes the positioning clamp for clamping fixed change-over lever, the positioning clamp includes the base and is located the first clamping piece and the second clamping piece of two sides on the base upper end and opposite distribution, the first clamping piece and the second clamping piece between form have for the clamping fixed positive rotation gear clamping position of swing after change-over lever, anti -accidental touch gear clamping position, reverse gear clamping position, the positive rotation gear clamping position and anti -accidental touch gear clamping position between form first sliding channel, anti -accidental touch gear clamping position and reverse gear clamping position between form second sliding channel. The utility model can clamping positioning to each state of change-over lever, realizes stable positive and reverse rotation gear positioning function, improves product quality, makes the utility model have very strong market competitiveness.

Description

Technical Field

[0001] This utility model relates to the field of switch product technology, and specifically to a forward and reverse gear structure for a trigger switch. Background Technology

[0002] Chinese Utility Model Patent No. 202122695972.5 discloses a high-voltage, high-current DC trigger switch with an arc-extinguishing structure, which includes a base, a top cover, a push shaft, and a return spring. One end of the push shaft extends out of the box formed by the base and the top cover, and the other end is located inside the box. A trigger is provided at the end of the push shaft extending out of the box. A moving contact arm, a moving contact arm bracket, a moving contact arm spring, and a stationary contact are provided on one side of the push shaft. The moving contact arm bracket and the stationary contact are both provided on the base. The moving contact arm is provided on the moving contact arm bracket, and one end of the moving contact arm is connected to the push shaft. An insulating block is provided at the position on the moving contact arm bracket where it connects to the moving contact arm spring. A moving contact is provided on the moving contact arm, and a stationary contact is provided on the stationary contact.

[0003] A reversing slider is provided above the push shaft, and a reversing lever that cooperates with the reversing slider is provided above the reversing slider; a fixing groove is provided on the base body corresponding to the position of the reversing slider, a positioning spring is provided in the fixing groove, a recess is provided on the positioning spring, and a reversing boss is provided at one end of the reversing lever, and the reversing boss can jump in the recess.

[0004] The aforementioned positioning spring serves as the forward and reverse gear structure for the reversing lever. Obviously, there is a recess in the middle of the positioning spring, which can only position the reversing lever at one position (the middle). When the lower end of the reversing lever rotates away from the recess, the positioning spring can no longer position the lower end of the reversing lever, resulting in the inability to achieve a stable forward and reverse gear positioning function, which affects product quality.

[0005] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a forward and reverse gear structure for a trigger switch.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a forward and reverse gear structure of a trigger switch includes a positioning clamp for clamping and fixing the reversing lever; the positioning clamp includes a base and a first clamping piece and a second clamping piece located on both sides of the upper end of the base and distributed opposite to each other, and a forward gear clamping position, an anti-accidental contact gear clamping position, and a reverse gear clamping position are formed between the first clamping piece and the second clamping piece for clamping and fixing the reversing lever after swinging, the forward gear clamping position and the anti-accidental contact gear clamping position form a first sliding channel, and the anti-accidental contact gear clamping position and the reverse gear clamping position form a second sliding channel.

[0008] Furthermore, in the above technical solution, the base is U-shaped, the first clip and the second clip are distributed in an inverted V-shape and are integrally connected to the upper two sides of the base, respectively. The gap between the lower ends of the first clip and the second clip is greater than the gap between the upper ends of the first clip and the second clip.

[0009] Furthermore, in the above technical solution, both the first clip and the second clip are wavy.

[0010] Furthermore, in the above technical solution, the first clamping piece has a first arc-shaped groove, a second arc-shaped groove, a third arc-shaped groove, and a first arc-shaped protrusion connecting the first arc-shaped groove and the second arc-shaped groove, and a second arc-shaped protrusion connecting the second arc-shaped groove and the third arc-shaped groove; the second clamping piece has a fourth arc-shaped groove, a fifth arc-shaped groove, a sixth arc-shaped groove, and a third arc-shaped protrusion connecting the fourth arc-shaped groove and the fifth arc-shaped groove, and a fourth arc-shaped protrusion connecting the fifth arc-shaped groove and the sixth arc-shaped groove; wherein, the first arc-shaped groove and the fourth arc-shaped groove form the forward gear clamping position, the second arc-shaped groove and the fifth arc-shaped groove form the anti-accidental collision gear clamping position, and the third arc-shaped groove and the sixth arc-shaped groove form the reverse gear clamping position; the first arc-shaped protrusion and the third arc-shaped protrusion form the first sliding channel; and the second arc-shaped protrusion and the fourth arc-shaped protrusion form the second sliding channel.

[0011] Furthermore, in the above technical solution, the lower end of the reversing lever is formed with a gear position post, which is clamped and positioned in the forward gear clamping position, the anti-accidental collision gear clamping position, or the reverse gear clamping position.

[0012] Furthermore, in the above technical solution, the positioning clamp is installed in the outer shell, which is provided with a positioning beam, a first stop groove and a second stop groove on both sides of the positioning beam, and a movable groove above the positioning beam; the base of the positioning clamp is sleeved on the outside of the positioning beam, and the lower ends of the base abut against the first stop groove and the second stop groove respectively, and a gap is formed between the lower ends of the base and the first stop groove and the second stop groove respectively; the first clamping piece and the second clamping piece are placed in the movable groove.

[0013] Furthermore, in the above technical solution, the reversing lever is installed in the housing in a swingable manner. One end of the reversing lever is provided with a toggle part, which is exposed outside the housing. The other end of the reversing lever is provided with a shifting part. The shifting contact spring is provided on the side of the shifting part, and the shifting contact spring contacts the shifting conductive plate provided on the PCB board installed in the housing. There are three shifting conductive plates, which are arranged in an arc shape. The forward shifting clamping position, the anti-accidental contact shifting clamping position, and the reverse shifting clamping position are distributed below the three shifting conductive plates.

[0014] Furthermore, in the above technical solution, when the shift contact spring contacts the middle shift conductive plate and the right shift conductive plate, it is in the forward gear position, and the reversing rod is placed in the forward gear clamping position; when the shift contact spring contacts the middle shift conductive plate and the left shift conductive plate, it is in the reverse gear position, and the reversing rod is placed in the reverse gear clamping position; the size of the middle shift conductive plate is greater than or equal to the size of the shift contact spring, so that when the shift contact spring only contacts the middle shift conductive plate, it is in the anti-accidental contact gear position, and the reversing rod is placed in the anti-accidental contact gear clamping position.

[0015] Furthermore, in the above technical solution, a slidable push rod is also provided inside the housing. A spring is also provided between the lower end of the push rod and the bottom wall of the housing. A trigger is also provided at the upper end of the push rod. A set of conductive springs is provided on the side of the push rod for contacting and conducting with conductive sheets on the PCB board.

[0016] Furthermore, in the above technical solution, a reversing insert block is provided on the other side of the reversing lever opposite to the toggle part; the trigger is provided with a left groove and a right groove for the reversing insert block to be inserted into, and a retaining wall located between the left groove and the right groove, and a middle groove for the retaining wall to be inserted into the middle of the reversing insert block.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention is provided with a forward gear clamping position, an anti-accidental contact gear clamping position, and a reverse gear clamping position on the positioning clamp; in specific use, when the reversing lever is moved to the forward gear position, it is clamped and positioned by the forward gear clamping position of the positioning clamp; when the reversing lever is moved to the anti-accidental contact gear position, it is clamped and positioned by the anti-accidental contact gear clamping position of the positioning clamp; when the reversing lever is moved to the reverse gear position, it is clamped and positioned by the reverse gear clamping position of the positioning clamp. The reversing lever can be interchanged between the forward gear clamping position, the anti-accidental contact gear clamping position, and the reverse gear clamping position through the first sliding channel and the second sliding channel, thereby enabling clamping and positioning of the reversing lever in various states, achieving stable forward and reverse gear positioning function, improving product quality, and giving the present invention a strong market competitiveness. Attached Figure Description

[0018] Figure 1 This is a perspective view of the trigger switch including the present invention;

[0019] Figure 2 This is an exploded perspective view of the trigger switch that includes this utility model;

[0020] Figure 3 This is a cross-sectional view of the trigger switch that includes this utility model;

[0021] Figure 4 It is a perspective view of the forward / reverse switching structure of the trigger switch of this utility model;

[0022] Figure 5 This is a perspective view of the PCB board in the trigger switch of this utility model;

[0023] Figure 6 This is a perspective view of the push rod in the trigger switch of this utility model;

[0024] Figure 7 This is a first state diagram of the forward / reverse switching structure in the trigger switch of this utility model;

[0025] Figure 8 This is a second state diagram of the forward / reverse switching mechanism in the trigger switch of this utility model;

[0026] Figure 9 This is a third state diagram of the trigger switch that includes the forward / reverse switching mechanism of this utility model;

[0027] Figure 10 This is a perspective view of the present invention. Detailed Implementation

[0028] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0029] See Figure 1-10 The diagram shows a trigger switch comprising a housing 1, a slidable push rod 2 disposed within the housing 1, a PCB board 3 mounted within the housing 1, a spring 4 disposed between the lower end of the push rod 2 and the bottom wall of the housing 1, a trigger 5 mounted on the upper end of the push rod 2, a forward / reverse switching mechanism 6 mounted within the housing 1 and connected to the PCB board 3, and a forward / reverse position mechanism for cooperating with the forward / reverse switching mechanism 6. The push rod 2 has a conductive spring assembly 21 on its side for contacting and conducting with a conductive sheet 32 ​​disposed on the PCB board 3. When the trigger 5 is pressed, the push rod 2 compresses the spring 4, sliding inward relative to the housing 1 and the PCB board 3. The conductive spring assembly 21 contacts the conductive sheet 32, achieving conductivity and thus enabling the trigger switch to operate.

[0030] The forward and reverse gear structure includes a positioning clamp 7 for clamping and fixing the reversing lever 61 in the forward and reverse gear shifting structure 6.

[0031] Specifically, the positioning clamp 7 includes a base 71 and a first clamping piece 72 and a second clamping piece 73 located on both sides of the upper end of the base 71 and distributed opposite to each other. A forward gear clamping position 701, an anti-accidental contact gear clamping position 702, and a reverse gear clamping position 704 are formed between the first clamping piece 72 and the second clamping piece 73 for clamping and fixing the reversing lever 61 after swinging. A first sliding channel 705 is formed between the forward gear clamping position 701 and the anti-accidental contact gear clamping position 702, and a second sliding channel 706 is formed between the anti-accidental contact gear clamping position 702 and the reverse gear clamping position 704.

[0032] This utility model provides a forward rotation clamping position 701, an anti-accidental contact clamping position 702, and a reverse rotation clamping position 704 on the positioning clamp 7. In actual use, when the reversing lever 61 is moved to the forward rotation position, it is clamped and positioned by the forward rotation clamping position 701 of the positioning clamp 7. When the reversing lever 61 is moved to the anti-accidental contact position, it is clamped and positioned by the anti-accidental contact clamping position 702 of the positioning clamp 7. When the reversing lever 61 is moved to the reverse rotation position, it is clamped and positioned by the positioning clamp 704. The reverse gear clamping position 704 clamps and positions the reversing lever 61. The reversing lever 61 can be interchanged between the forward gear clamping position 701, the anti-accidental collision gear clamping position 702, and the reverse gear clamping position 704 after passing through the first sliding channel 705 and the second sliding channel 706. This allows for clamping and positioning of the reversing lever 61 in various states, achieving a stable forward and reverse gear positioning function, improving product quality, and giving this utility model a strong market competitiveness.

[0033] The outer casing 1 is provided with a positioning beam 101, a first stop groove 103 and a second stop groove 104 located on both sides of the positioning beam 101, and a movable groove 102 located above the positioning beam 101; the base 71 of the positioning clamp 7 is sleeved on the outside of the positioning beam 101, and the lower ends of the base 71 abut against the first stop groove 103 and the second stop groove 104 respectively, and a gap is formed between the lower ends of the base 71 and the first stop groove 103 and the second stop groove 104 respectively; the first clamping piece 72 and the second clamping piece 73 are placed in the movable groove 102.

[0034] The base 71 is U-shaped, and the first clamping piece 72 and the second clamping piece 73 are distributed in an inverted V-shape and are integrally connected to the upper two sides of the base 71 respectively. The gap between the lower ends of the first clamping piece 72 and the second clamping piece 73 is greater than the gap between the upper ends of the first clamping piece 72 and the second clamping piece 73. That is to say, the first clamping piece 72 and the second clamping piece 73 are relatively inclined, which can form a more stable clamping force.

[0035] Both the first clamp 72 and the second clamp 73 are wavy, making the reversing lever 61 slide more smoothly between the first clamp 72 and the second clamp 73. The first clamp 72 has a first arc-shaped groove 721, a second arc-shaped groove 722, a third arc-shaped groove 723, and a first arc-shaped protrusion 724 connecting the first arc-shaped groove 721 and the second arc-shaped groove 722, and a second arc-shaped protrusion 725 connecting the second arc-shaped groove 722 and the third arc-shaped groove 723; the second clamp 73 has a fourth arc-shaped groove 731, a fifth arc-shaped groove 732, a sixth arc-shaped groove 733, and a third arc-shaped protrusion 734 connecting the fourth arc-shaped groove 731 and the fifth arc-shaped groove 732, and a fourth arc-shaped protrusion 735 connecting the fifth arc-shaped groove 732 and the sixth arc-shaped groove 733; wherein, a certain shape is formed between the first arc-shaped groove 721 and the fourth arc-shaped groove 731. The forward gear clamping position 701 is described above. The anti-accidental gear clamping position 702 is formed between the second arc-shaped groove 722 and the fifth arc-shaped groove 732. The reverse gear clamping position 704 is formed between the third arc-shaped groove 723 and the sixth arc-shaped groove 733. The first sliding channel 705 is formed between the first arc-shaped protrusion 724 and the third arc-shaped protrusion 734. The second sliding channel 706 is formed between the second arc-shaped protrusion 725 and the fourth arc-shaped protrusion 735, so that the reversing lever 61 can be smoothly interchanged among the forward gear clamping position 701, the anti-accidental gear clamping position 702, and the reverse gear clamping position 704 after passing through the first sliding channel 705 and the second sliding channel 706.

[0036] The lower end of the reversing lever 61 is formed with a gear post 610. The gear post 610 is clamped and positioned in the forward gear clamping position 701, the anti-accidental collision gear clamping position 702, or the reverse gear clamping position 704. This enables the reversing lever 61 to be clamped and positioned in various states, achieving a stable forward and reverse gear positioning function and improving product quality.

[0037] The PCB board 3 is also connected to a ribbon cable 30, the end of which extends out of the housing 1 and is provided with a connector 301. The ribbon cable 30 is also connected to an indicator light 302.

[0038] The forward / reverse shifting gear structure 6 consists of a reversing lever 61 and a shifting contact spring 62. The reversing lever 61 is mounted inside the housing 1 in a swingable manner. One end of the reversing lever 61 is provided with a toggle part 611, which is exposed outside the housing 1. The other end of the reversing lever 61 is provided with a shifting part 612. The shifting contact spring 62 is provided on the side of the shifting part 612 and contacts the gear position conductive plate 31 provided on the PCB board 3 installed inside the housing 1. In operation, this invention drives the shifting part 612 at the other end of the reversing lever 61 to swing after the actuating part 611 of the reversing lever 61 is moved. Simultaneously, the shifting part 612 swings, causing the shifting contact spring 62 to swing, thus contacting the different gear conductive plates 31 on the PCB board 3 to achieve forward / reverse gear switching. The forward / reverse gear switching structure 6 eliminates the need for a reversing slider, reducing the swing-to-slide motion and enabling more stable forward / reverse gear switching. In other words, the forward / reverse gear switching structure 6 consists of only two parts: the reversing lever 61 and the shifting contact spring 62. With fewer parts and a relatively simple structure, it achieves stable forward / reverse gear switching and is extremely convenient to use.

[0039] In this embodiment, there are three gear position conductive plates 31 arranged in an arc shape. The shift contact spring 62 contacts two adjacent gear position conductive plates 31 to achieve forward and reverse gear switching. The forward gear clamping position 701, the anti-accidental contact gear clamping position 702, and the reverse gear clamping position 704 are correspondingly distributed below the three gear position conductive plates 31. When the reversing lever 61 is moved to achieve gear shifting, the gear position post 610 of the reversing lever 61 is clamped and positioned in the forward gear clamping position 701, the anti-accidental contact gear clamping position 702, or the reverse gear clamping position 704. This allows for clamping and positioning of the reversing lever 61 in various states, achieving stable forward and reverse gear positioning and improving product quality.

[0040] When the shift contact spring 62 contacts the middle shift conductive plate 31 and the right shift conductive plate 31, it is in the forward gear position, and the reversing lever 61 is placed in the forward gear clamping position 701; when the shift contact spring 62 contacts the middle shift conductive plate 31 and the left shift conductive plate 31, it is in the reverse gear position, and the reversing lever 61 is placed in the reverse gear clamping position 704; when the size of the middle shift conductive plate 31 is greater than or equal to the size of the shift contact spring 62, so that the shift contact spring 62 can only contact the middle shift conductive plate 31, it is in the anti-accidental contact gear position, and the reversing lever 61 is placed in the anti-accidental contact gear clamping position 702.

[0041] To ensure that the shift contact spring 62 is more stably in the forward, reverse, or anti-accidental engagement position, the following design was also implemented:

[0042] One end of the reversing lever 61 is provided with a toggle part 611, and the other side is provided with a reversing insert block 613; the trigger 5 is provided with a left groove 51 and a right groove 52 for the reversing insert block 613 to be inserted into, and a retaining wall 53 located between the left groove 51 and the right groove 52. The reversing insert block 613 is also provided with a middle groove 603 for the retaining wall 53 to be inserted into.

[0043] In other words, by moving the actuating part 611 of the reversing lever 61, the shifting part 612 at the other end of the reversing lever 61 is driven to swing. While swinging, the shifting part 612 drives the shifting contact spring 62 to swing. When the shifting contact spring 62 is only in contact with the middle gear conductive plate 31, it is in the anti-accidental contact gear position. At this time, the reversing clamp block 613 is located below the barrier wall 53 of the trigger 5. When the trigger 5 is pressed, the barrier wall 53 is embedded in the middle groove 603 of the reversing clamp block 613, which prevents the trigger 5 from being pressed again, thus achieving the function of preventing accidental contact.

[0044] By actuating the actuating part 611 of the reversing lever 61, the shifting part 612 at the other end of the reversing lever 61 is driven to swing. Simultaneously, the shifting part 612 swings, causing the shifting contact spring 62 to swing. When the shifting contact spring 62 contacts the middle and right-side shifting conductive plates 31, it is in the forward rotation position. At this time, the actuating part 611 is located below the left slot 51 of the trigger 5. Pressing the trigger 5 causes the push rod 2 to compress the spring 4, sliding inward relative to the outer casing 1 and the PCB board 3. The conductive spring assembly 21 contacts the conductive plate 32 to achieve conductivity, thus enabling the trigger switch to operate. Furthermore, the left slot 51 of the trigger 5 is fitted around the reversing insert block 613 of the reversing lever 61, ensuring that the forward rotation position is in the triggered conductive state. Figure 7 As shown.

[0045] By actuating the actuating part 611 of the reversing lever 61, the shifting part 612 at the other end of the reversing lever 61 is driven to swing. Simultaneously, the shifting part 612 swings, causing the shifting contact spring 62 to swing. When the shifting contact spring 62 contacts the middle shifting conductive plate 31 and the left shifting conductive plate 31, it is in the forward rotation position. At this time, the actuating part 611 is located below the right slot 52 of the trigger 5. Pressing the trigger 5 causes the push rod 2 to compress the spring 4, sliding inward relative to the outer casing 1 and the PCB board 3. The conductive spring assembly 21 contacts the conductive plate 32 to achieve conductivity, thus enabling the trigger switch to operate. Furthermore, the right slot 52 of the trigger 5 is fitted around the reversing clamp block 613 of the reversing lever 61, thereby ensuring that the reverse rotation position is in the triggered conductive state. Figure 8-9 As shown.

[0046] The shifting part 612 is provided with a mounting groove 601, and a positioning post 602 is provided in the mounting groove 601. The shifting contact spring 62 includes a main body 621 and a first contact spring arm 622 and a second contact spring arm 623 integrally bent at both ends of the main body 621. The main body 621 is provided with a positioning hole 604. The main body 621 is embedded and positioned in the mounting groove 601, and the positioning hole 604 is sleeved and fixed to the outside of the positioning post 602 to ensure the stability of the assembly structure. This allows the shifting contact spring 62 to be stably installed in the mounting groove 601 of the shifting part 612. The ends of the first contact spring arm 622 and the second contact spring arm 623 both protrude out of the mounting groove 601 so as to contact the shifting conductive sheet 31 provided on the PCB board 3.

[0047] The positioning post 602 has a shape that is large at the base and small at the end. The end of the positioning post 602 also has a riveting edge that protrudes outward (not shown in the figure). The riveting edge abuts against the outside of the positioning hole 604 to prevent the main body 621 from disengaging from the positioning post 602, thereby ensuring the stability of the assembly structure and improving product quality.

[0048] The push rod 2 is also covered with a retractable and foldable flexible protective sleeve 22. The lower end of the flexible protective sleeve 22 is fixedly connected to the upper end of the outer shell 1, and the upper end of the flexible protective sleeve 22 is fixedly connected to the lower end of the trigger 5. The flexible protective sleeve 22 plays a good protective role and also has a good waterproof and dustproof effect.

[0049] The specific assembly structure of the flexible protective sleeve 22 is as follows: the lower end of the trigger 5 is provided with a limiting groove 54, the upper end of the push rod 2 is provided with a limiting step 23 that protrudes outward and matches the limiting groove 54, and the upper end of the flexible protective sleeve 22 is formed with a first flange 221 extending from the outside to the inside, which is pressed and positioned between the limiting groove 54 and the limiting step 23. The upper end of the outer shell 1 is formed with a convex ring 11, and the outer periphery of the upper end of the convex ring 11 is provided with an annular groove 111; the lower end of the flexible protective sleeve 22 is formed with a second flange 222 extending from the outside to the inside, which is inserted into the annular groove 111 from the outside to the inside, so that the flexible protective sleeve 22 is stably connected between the trigger 5 and the outer shell 1.

[0050] In summary, this utility model provides a forward rotation clamping position 701, an anti-accidental contact clamping position 702, and a reverse rotation clamping position 704 on the positioning clamp 7. In practical use, when the reversing lever 61 is moved to the forward rotation position, it is clamped and positioned by the forward rotation clamping position 701 of the positioning clamp 7. When the reversing lever 61 is moved to the anti-accidental contact position, it is clamped and positioned by the anti-accidental contact clamping position 702 of the positioning clamp 7. When the reversing lever 61 is moved to the reverse rotation position, it is clamped and positioned by the anti-accidental contact clamping position 704. The reversing gear clamping position 704 of the position clamp 7 is used for clamping and positioning. The reversing lever 61 can be interchanged between the forward gear clamping position 701, the anti-accidental collision gear clamping position 702, and the reverse gear clamping position 704 after passing through the first sliding channel 705 and the second sliding channel 706. This allows for clamping and positioning of the reversing lever 61 in various states, achieving a stable forward and reverse gear positioning function, improving product quality, and giving this utility model a strong market competitiveness.

[0051] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A forward and reverse gear structure for a trigger switch, comprising a positioning clamp (7) for clamping and fixing a reversing lever (61). Its features are: The positioning clamp (7) includes a base (71) and a first clamping piece (72) and a second clamping piece (73) located on both sides of the upper end of the base (71) and distributed opposite to each other. A forward gear clamping position (701), an anti-accidental collision clamping position (702), and a reverse gear clamping position (704) are formed between the first clamping piece (72) and the second clamping piece (73) for clamping and fixing the swinging reversing lever (61). A first sliding channel (705) is formed between the forward gear clamping position (701) and the anti-accidental collision clamping position (702), and a second sliding channel (706) is formed between the anti-accidental collision clamping position (702) and the reverse gear clamping position (704).

2. The forward and reverse rotation mechanism of a trigger switch according to claim 1, characterized in that: The base (71) is U-shaped, and the first clip (72) and the second clip (73) are distributed in an inverted V-shape and are integrally connected to the upper sides of the base (71). The gap between the lower ends of the first clip (72) and the second clip (73) is greater than the gap between the upper ends of the first clip (72) and the second clip (73).

3. The forward and reverse rotation mechanism of a trigger switch according to claim 1, characterized in that: Both the first clip (72) and the second clip (73) are wavy.

4. The forward and reverse rotation mechanism of a trigger switch according to claim 1, characterized in that: The first clip (72) has a first arc-shaped groove (721), a second arc-shaped groove (722), a third arc-shaped groove (723), and a first arc-shaped protrusion (724) connecting the first arc-shaped groove (721) and the second arc-shaped groove (722), and a second arc-shaped protrusion (725) connecting the second arc-shaped groove (722) and the third arc-shaped groove (723); the second clip (73) has a fourth arc-shaped groove (731), a fifth arc-shaped groove (732), a sixth arc-shaped groove (733), and a third arc-shaped protrusion (734) connecting the fourth arc-shaped groove (731) and the fifth arc-shaped groove (732), and a third arc-shaped protrusion (734) connecting the fifth arc-shaped groove (732) and the sixth arc-shaped groove (733). The fourth arc-shaped protrusion (735) between the first arc-shaped groove (721) and the fourth arc-shaped groove (731) forms the forward gear clamping position (701), the second arc-shaped groove (722) and the fifth arc-shaped groove (732) form the anti-accidental collision gear clamping position (702), and the third arc-shaped groove (723) and the sixth arc-shaped groove (733) form the reverse gear clamping position (704); the first sliding channel (705) between the first arc-shaped protrusion (724) and the third arc-shaped protrusion (734); and the second sliding channel (706) between the second arc-shaped protrusion (725) and the fourth arc-shaped protrusion (735).

5. The forward and reverse rotation mechanism of a trigger switch according to claim 1, characterized in that: The lower end of the reversing lever (61) is formed with a gear post (610), which is clamped and positioned in the forward gear clamping position (701), the anti-accidental collision gear clamping position (702), or the reverse gear clamping position (704).

6. The forward and reverse rotation mechanism of a trigger switch according to any one of claims 1-5, characterized in that: The positioning clamp (7) is installed in the outer shell (1), which is provided with a positioning beam (101), a first stop groove (103) and a second stop groove (104) on both sides of the positioning beam (101), and a movable groove (102) above the positioning beam (101); the base (71) of the positioning clamp (7) is sleeved on the outside of the positioning beam (101), and the lower ends of the base (71) are respectively positioned against the first stop groove (103) and the second stop groove (104), and a gap is formed between the lower ends of the base (71) and the first stop groove (103) and the second stop groove (104); the first clamping piece (72) and the second clamping piece (73) are placed in the movable groove (102).

7. The forward and reverse rotation mechanism of a trigger switch according to claim 6, characterized in that: The reversing lever (61) is installed in the housing (1) in a swingable manner. One end of the reversing lever (61) is provided with a toggle part (611), which is exposed outside the housing (1). The other end of the reversing lever (61) is provided with a shift part (612). The shift contact spring (62) is provided on the side of the shift part (612), and the shift contact spring (62) contacts the gear position conductive sheet (31) provided on the PCB board (3) installed in the housing (1). There are three gear position conductive sheets (31), which are arranged in an arc shape. The forward gear position clamping position (701), the anti-accidental collision gear position clamping position (702), and the reverse gear position clamping position (704) are distributed below the three gear position conductive sheets (31) respectively.

8. The forward and reverse rotation mechanism of a trigger switch according to claim 7, characterized in that: When the shift contact spring (62) contacts the middle shift conductive plate (31) and the right shift conductive plate (31), it is in the forward gear position, and the reversing lever (61) is placed in the forward gear clamping position (701); when the shift contact spring (62) contacts the middle shift conductive plate (31) and the left shift conductive plate (31), it is in the reverse gear position, and the reversing lever (61) is placed in the reverse gear clamping position (704); the size of the middle shift conductive plate (31) is greater than or equal to the size of the shift contact spring (62), so that when the shift contact spring (62) only contacts the middle shift conductive plate (31), it is in the anti-accidental contact gear position, and the reversing lever (61) is placed in the anti-accidental contact gear clamping position (702).

9. The forward and reverse rotation mechanism of a trigger switch according to claim 6, characterized in that: The outer casing (1) is also provided with a sliding push rod (2), and a spring (4) is provided between the lower end of the push rod (2) and the bottom wall of the outer casing (1). A trigger (5) is also provided at the upper end of the push rod (2). A conductive spring group (21) is provided on the side of the push rod (2) for contacting and conducting with the conductive sheet (32) provided on the PCB board (3).

10. The forward and reverse rotation mechanism of a trigger switch according to claim 9, characterized in that: One end of the reversing lever (61) is provided with a toggle part (611) and the other side is provided with a reversing insert block (613); the trigger (5) is provided with a left groove (51) and a right groove (52) for the reversing insert block (613) to be inserted into, and a retaining wall (53) located between the left groove (51) and the right groove (52). The reversing insert block (613) is also provided with a middle groove (603) for the retaining wall (53) to be inserted into.

Images