Firing device of gunpowder power tool and firing mode of firing device
By utilizing the U-shaped firing pin structure and trigger design, and taking advantage of the elasticity of the firing pin torsion spring and trigger return spring, the problem of high energy loss in nail guns is solved, enabling rapid firing and resetting, and improving energy conversion efficiency.
Patent Information
- Application Number
- CN202511533192.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2025-12-26
AI Technical Summary
Existing nail guns suffer from high energy loss in their firing mechanism, and their structure, similar to military firearms, increases friction and affects energy conversion efficiency.
It adopts a U-shaped firing pin structure, and through the design of torsion spring pin and trigger structure, it utilizes the elasticity of the firing pin torsion spring to achieve rapid rotation and impact of the firing pin, reducing frictional loss. Combined with the elasticity of the trigger return spring, it achieves rapid reset.
It improves energy conversion efficiency, reduces frictional wear on the firing pin, and enables rapid firing of the nail gun cartridge and rapid trigger reset.
Smart Images
Figure CN121199918A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of gunpowder power technology, and in particular to a firing device and firing method for a gunpowder-powered tool. Background Technology
[0002] Gunpowder-powered tools typically refer to tools that utilize the high-temperature, high-pressure gas generated by the rapid combustion of gunpowder as an energy source. Through a specific device, this energy is converted into mechanical energy, thereby propelling objects into motion. This process is based on the conversion of chemical energy into thermal energy, and then into kinetic energy.
[0003] A nail gun is a common gunpowder-powered tool. The firing mechanism of common nail guns mainly involves the firing pin moving rapidly along the axis in a circular hole to strike the edge of the nail cartridge. This causes the gunpowder inside the cartridge to burn, and the energy generated pushes the piston rod to strike the nail. The firing mechanism is mostly modeled after military firearms, where pulling the trigger releases the safety and causes the firing pin to move rapidly along the axis. Therefore, the design of these products often resembles military firearms in some aspects, resulting in novel and low-profile structures. Furthermore, during the movement of the firing pin along the axis in the circular hole, there is friction between the firing pin and the inner wall of the hole, which increases energy loss. Summary of the Invention
[0004] The purpose of this invention is to provide a firing device and firing method for a gunpowder-powered tool, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a firing device for a gunpowder-powered tool, comprising: Organism; The movable cavity is disposed on the body; The power structure is mounted on the body. A firing pin structure is disposed on the machine body and is used to perform a rotary impact on the power structure. A trigger structure is provided on one side of the firing pin structure, and the trigger structure is used to drive the firing pin structure to rotate and trigger the rotation of the firing pin structure.
[0006] Preferably, the firing pin structure includes: A firing pin, which is mounted on the machine body and is U-shaped; A torsion spring pin hole is provided at the top of the firing pin; The first pin hole is located on the top of the machine body and corresponds to the position of the torsion spring pin hole. A torsion spring pin is inserted between a torsion spring pin hole and a first pin hole; A firing pin torsion spring is movably sleeved on a torsion spring pin shaft, with the middle part of the firing pin torsion spring intersecting the top of the firing pin.
[0007] Preferably, the firing pin structure further includes: A trapezoidal boss, which is fixedly connected to one side of the firing pin; A tapered end, wherein the tapered end is disposed at the bottom of the firing pin; A pressure spring is provided, which is located below the firing pin torsion spring, with one end of the pressure spring in contact with the outer wall of the firing pin torsion spring.
[0008] Preferably, the firing pin structure further includes: A firing pin holder, wherein the firing pin holder is disposed within the movable cavity; A guide post, which is fixedly connected to the front side of the firing pin seat; A tapered through hole is provided on one side of the firing pin seat, and the position of the tapered through hole corresponds to the position of the tapered end; A guide hole is provided on the machine body, and the guide hole and the guide post are slidably intersected.
[0009] Preferably, the trigger structure includes: A trigger, wherein the trigger is located on one side of the firing pin; A rotating block, which is disposed on one side of the top of the trigger, and the rotating block is arranged in an L-shape; A rotating shaft is fixedly connected to a rotating block and is rotatably connected to a trigger. A rotating sleeve is rotatably connected to one end of a rotating block. The rotating sleeve is cylindrical and its position corresponds to that of the trapezoidal boss. A tension spring, one end of which is fixedly connected to a rotating block, and the other end of which is fixedly connected to a trigger.
[0010] Preferably, the trigger structure further includes: A fixing pin hole is provided at the bottom of the trigger; The second pin hole is located at the bottom of the machine body and its position corresponds to that of the fixing pin hole. A return spring pin is rotatably inserted into the second pin hole and the fixed pin hole bracket. A trigger return spring is movably sleeved on a return spring pin. The trigger return spring is located at the bottom of the movable cavity, and one end of the trigger return spring is in contact with the inner wall of the movable cavity.
[0011] Preferably, the rotating sleeve is rotatably connected to one end of the rotating block via a rotating shaft, the trigger has a through groove, the tension spring is inserted into the through groove, both the trigger and the rotating block have connecting holes, the hook at one end of the tension spring is inserted into the connecting hole, the bottom of the trigger has a round hole, and one end of the trigger return spring is inserted into the round hole.
[0012] Preferably, a piston cylinder is fixedly installed in the inner cavity of the machine body, a piston rod is slidably inserted in the inner cavity of the piston cylinder, and a nail gun cartridge is provided in the inner cavity of one end of the piston cylinder.
[0013] Preferably, the top of the body has a groove, a bolt is provided in the inner cavity of the groove, one end of the compression spring has a mounting hole, the mounting hole and the bolt are slidably interlocked, and the bolt is threaded to the bottom of the inner wall of the groove.
[0014] A firing method for a gunpowder-powered tool includes the following specific steps: Step 1: First, pull the trigger clockwise with your finger. As the bottom of the trigger rotates, the trigger return spring is compressed and deformed. The trigger also drives the rotating block to rotate together. The rotating sleeve at one end of the rotating block moves together. The rotating sleeve fits tightly with the trapezoidal boss, pushing the trapezoidal boss to rotate, which in turn drives the firing pin to rotate counterclockwise around the torsion spring pin. Step 2: Next, as the firing pin rotates counterclockwise, the top of the firing pin compresses and deforms the firing pin torsion spring. The firing pin and the trapezoidal boss rotate together, causing the rotating sleeve on the trigger to disengage from the trapezoidal boss. Utilizing the elasticity of the firing pin torsion spring, a torsional force is generated, driving the firing pin to rotate. This causes the conical end at the bottom of the firing pin to collide with one end of the nail cartridge, generating kinetic energy and firing the nail cartridge. Step 3: Then, after firing, the firing pin returns to its initial position through the action of the firing pin torsion spring and the pressure spring. At the same time, after the trigger reaches the release point, the elasticity of the trigger return spring generates a torsional force, causing the trigger to rotate. The rotating sleeve on the trigger moves along the shape path of the trapezoidal boss, causing the rotating sleeve to fit against the trapezoidal boss and enter the initial position, thus resetting the trigger.
[0015] The technical effects and advantages of this invention are as follows: This invention utilizes the counterclockwise rotation of the firing pin around the torsion spring pin shaft, which compresses and deforms the firing pin torsion spring at its top. The elasticity of the firing pin torsion spring drives the firing pin to rotate, generating torsional force. This causes the firing pin to rotate rapidly, and the conical end passes through the conical through-hole to impact one end of the nail cartridge, generating kinetic energy and rapidly firing the nail cartridge. This reduces the travel distance, decreases the friction on the firing pin, and reduces energy loss. When the trigger is pulled clockwise, the rotating sleeve on the trigger fits tightly against the trapezoidal boss on the firing pin, squeezing and pushing the firing pin to rotate clockwise. The top of the firing pin compresses and deforms the firing pin torsion spring. After the firing pin and the trigger move to a certain angle, the rotating sleeve on the trigger and the trapezoidal boss on the firing pin reach the disengagement point, releasing the compression of the trapezoidal boss by the rotating sleeve. The elasticity of the firing pin torsion spring generates a torsional force, which drives the firing pin to rotate rapidly. This causes the conical end at the bottom of the firing pin to impact and generate kinetic energy, facilitating the rapid firing of the nail cartridge. This invention uses the action of the firing pin torsion spring and the pressure spring to return the firing pin to its initial position. When the trigger reaches the release point, the trigger rotates rapidly using the elastic action of the trigger return spring. The rotating sleeve on the trigger moves along the shape path of the trapezoidal boss, so that the rotating sleeve fits into the trapezoidal boss and enters the initial position, which facilitates the rapid reset of the trigger and firing pin. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the body of the present invention; Figure 2 This is a schematic diagram of the structure at the guide post of the present invention; Figure 3 This is a schematic diagram of the structure at the guide hole of the present invention; Figure 4 This is a schematic cross-sectional view of the piston rod of the present invention. Figure 5 This is a schematic cross-sectional view of the trigger section of the present invention. Figure 6 This is a schematic diagram of the firing pin structure of the present invention; Figure 7 This is a schematic diagram of the firing pin torsion spring structure of the present invention; Figure 8 This is a schematic diagram of the structure of the compression spring in this invention; Figure 9 This is a schematic diagram of the firing pin seat structure of the present invention; Figure 10 This is a schematic diagram of the trigger mechanism of the present invention; Figure 11 This is a schematic diagram of the trigger return spring structure of the present invention; Figure 12 This is a schematic diagram of the side structure of the trigger of the present invention.
[0017] In the attached diagram: 1. Body; 2. Movable cavity; 3. Firing pin structure; 31. Firing pin; 32. Torsion spring pin hole; 33. First pin hole; 34. Torsion spring pin; 35. Firing pin torsion spring; 36. Trapezoidal boss; 37. Conical end; 38. Compression spring; 39. Firing pin seat; 310. Guide post; 311. Conical through hole; 312. Guide hole; 4. Trigger structure; 41. Trigger; 42. Rotating block; 43. Rotating shaft; 44. Rotating sleeve; 45. Tension spring; 46. Fixing pin hole; 47. Second pin hole; 48. Return spring pin; 49. Trigger return spring; 5. Through groove; 6. Piston cylinder; 7. Piston rod; 8. Nail cartridge; 9. Bolt; 10. Mounting hole; 11. Connecting hole. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] This invention provides, for example Figures 1-12 The firing device of a gunpowder-powered tool shown includes a body 1, a movable cavity 2, a firing pin structure 3, a trigger structure 4, and a power structure. The movable cavity 2 is disposed on the body 1 and is used to install the firing pin structure 3 and the trigger structure 4. The firing pin structure 3 is disposed on the body 1 and is used to rotate and impact the power structure, using torsional force to generate kinetic energy, which is safe and reliable. The trigger structure 4 is disposed on one side of the firing pin structure 3 and is used to drive the firing pin structure 3 to rotate and trigger the rotation of the firing pin structure 3.
[0020] The firing pin structure 3 includes a firing pin 31, a torsion spring pin hole 32, a first pin hole 33, a torsion spring pin 34, a firing pin torsion spring 35, a trapezoidal boss 36, a tapered end 37, a pressure spring 38, a firing pin seat 39, a guide post 310, a tapered through hole 311, and a guide hole 312. The firing pin 31 is mounted on the body 1 and is U-shaped. The firing pin 31 is located in the movable cavity 2 and is used to impact the nail cartridge 8. The torsion spring pin hole 32 is located on the top of the firing pin 31 and is used to install the torsion spring pin 34. The first pin hole 33 is located on the top of the body 1 and corresponds to the position of the torsion spring pin hole 32. The first pin hole 33 is used for insertion. A torsion spring pin 34 is provided; the torsion spring pin 34 is inserted between the torsion spring pin hole 32 and the first pin hole 33, and the torsion spring pin 34 passes through the torsion spring pin hole 32 and the first pin hole 33, rotatably connecting the top of the firing pin 31 to the machine body 1, so that the firing pin 31 rotates around the torsion spring pin 34; the firing pin torsion spring 35 is movably sleeved on the torsion spring pin 34, and the middle part of the firing pin torsion spring 35 is inserted into the top of the firing pin 31. As the firing pin 31 rotates counterclockwise around the torsion spring pin 34, the top of the firing pin 31 compresses and deforms the firing pin torsion spring 35, and the elastic effect of the firing pin torsion spring 35 drives the firing pin 31 to rotate, generating a torsional force, so that the firing pin 31 rotates rapidly. The firing pin 31 impacts the nail cartridge 8, causing the gunpowder inside the cartridge to burn and explode. The energy generated by the explosion drives the piston rod 7. A trapezoidal boss 36 is fixedly connected to one side of the firing pin 31 and rotates with the firing pin 31 to cooperate with the rotating sleeve 44 on the trigger 41. A tapered end 37 is located at the bottom of the firing pin 31. When the firing pin 31 rotates, the tapered end 37 passes through the tapered through hole 311 to impact one end of the nail cartridge 8. A pressure spring 38 is located below the firing pin torsion spring 35. One end of the pressure spring 38 is in contact with the outer wall of the firing pin torsion spring 35. When the firing pin 31 compresses the firing pin torsion spring 35, the firing pin torsion spring 35 compresses the pressure spring 38. 8. Pressing downwards utilizes the elasticity of the spring plate 38 to push the firing pin torsion spring 35 and the firing pin 31 back to the unfired state; the firing pin seat 39 is located in the movable cavity 2 and is used to position the firing pin 31; the guide post 310 is fixedly connected to the front of the firing pin seat 39 and is used to position and install the firing pin seat 39; the tapered through hole 311 is located on one side of the firing pin seat 39, and the position of the tapered through hole 311 corresponds to the position of the tapered end 37, and the tapered through hole 311 is used for the movement of the tapered end 37; the guide hole 312 is opened on the body 1, and the guide hole 312 and the guide post 310 are slidably interlocked, and the guide hole 312 is used to install the guide post 310.
[0021] The trigger structure 4 includes a trigger 41, a rotating block 42, a rotating shaft 43, a rotating sleeve 44, a tension spring 45, a fixing pin hole 46, a second pin hole 47, a return spring pin 48, and a trigger return spring 49. The trigger 41 is located on one side of the firing pin 31 and is used to drive the firing pin 31 to rotate. The rotating block 42 is located on one side of the top of the trigger 41 and is L-shaped. The rotating block 42 is used to mount the rotating sleeve 44 and moves the rotating sleeve 44 together with it. The rotating block 42 moves with the trigger 41. The trigger 41 rotates; the rotating shaft 43 is fixedly connected to the rotating block 42, and the rotating shaft 43 is rotatably connected to the trigger 41. The rotating block 42 is rotatably connected to one side of the trigger 41 through the rotating shaft 43, so that the rotating block 42 rotates around the rotating shaft 43; the rotating sleeve 44 is rotatably connected to one end of the rotating block 42. The rotating sleeve 44 is cylindrical and corresponds to the position of the trapezoidal boss 36. The rotating sleeve 44 moves together with the trigger 41 to squeeze and push the trapezoidal boss 36 on the firing pin 31. The trigger 41 has a slot on its top, and a rotating sleeve 44 is disposed in the slot. The slot limits the angle between the rotating block 42 and the rotating sleeve 44, ensuring that the rotating sleeve 44 stably pushes the trapezoidal boss 36. One end of the tension spring 45 is fixedly connected to the rotating block 42, and the other end of the tension spring 45 is fixedly connected to the trigger 41. The elasticity of the tension spring 45 pulls the rotating block 42 and the rotating sleeve 44, making the rotating sleeve 44 fit tightly against the trapezoidal boss 36. A fixing pin hole 46 is provided in the trigger 41. The bottom of the trigger 41 is used to install the return spring pin 48; the second pin hole 47 is provided at the bottom of the trigger 41, and the second pin hole 47 corresponds to the position of the fixed pin hole 46. By inserting the return spring pin 48 between the fixed pin hole 46 and the second pin hole 47, the bottom of the trigger 41 is rotatably connected to the trigger 41, and the trigger 41 rotates around the return spring pin 48; the return spring pin 48 is rotatably inserted into the bracket between the second pin hole 47 and the fixed pin hole 46, and the return spring pin 48 is used to install the trigger return spring 49;The trigger return spring 49 is movably sleeved on the return spring pin 48 and located at the bottom of the movable cavity 2. One end of the trigger return spring 49 is in contact with the inner wall of the movable cavity 2, and the other end is in contact with the outer wall of the trigger 41. When the trigger 41 rotates clockwise around the return spring pin 48, the trigger 41 compresses and deforms the trigger return spring 49, and utilizes the elasticity of the trigger return spring 49 to drive the trigger 41 back to the unfired position. When the trigger 41 is pulled clockwise, the rotating sleeve 44 on the trigger 41 is tightly fitted with the trapezoidal boss 36 on the firing pin 31, compressing and pushing the firing pin 31 to rotate clockwise. The top of the firing pin 31 compresses and deforms the firing pin torsion spring 35. After the firing pin 31 and the trigger 41 move to a certain angle, the trigger... When the rotating sleeve 44 on trigger 41 reaches the disengagement point with the trapezoidal boss 36 of firing pin 31, the compression of the trapezoidal boss 36 by the rotating sleeve 44 is released. Utilizing the elasticity of the firing pin torsion spring 35, a torsional force is generated, causing the firing pin 31 to rotate rapidly. This causes the conical end 37 at the bottom of the firing pin 31 to impact and generate kinetic energy, firing the nail cartridge 8. After firing, under the action of the firing pin torsion spring 35 and the pressure spring 38, the firing pin 31 returns to its initial position. Simultaneously, after trigger 41 reaches the disengagement point, the elasticity of the trigger return spring 49 generates a torsional force, allowing trigger 41 to rotate rapidly. The rotating sleeve 44 of trigger 41 continues to move along the shape path of the trapezoidal boss 36, causing the rotating sleeve 44 to conform to the trapezoidal boss 36 and return to its initial position, thus resetting trigger 41.
[0022] The rotating sleeve 44 is rotatably connected to one end of the rotating block 42 via a rotating shaft. The rotation of the rotating sleeve 44 facilitates its movement along the surface of the trapezoidal boss 36. The trigger 41 has a through groove 5, and the tension spring 45 is inserted into the through groove 5. After passing through the through groove 5, the two ends of the tension spring 45 are respectively inserted into the connecting holes 11 on the trigger 41 and the rotating block 42 to connect the trigger 41 and the rotating block 42. Both the trigger 41 and the rotating block 42 have connecting holes 11. The hook at one end of the tension spring 45 is inserted into the connecting hole 11. The connecting hole 11 is used to connect the hooks at both ends of the tension spring 45. The bottom of the trigger 41 has a round hole, and one end of the trigger return spring 49 is inserted into the round hole. When the trigger 41 rotates, the inner wall of the round hole presses against one end of the trigger return spring 49, compressing and deforming the trigger return spring 49.
[0023] The power structure includes a piston cylinder 6, a piston rod 7, and a nail gun cartridge 8. The piston cylinder 6 is fixedly installed in the inner cavity of the body 1. The piston cylinder 6 is used to install the piston rod 7. The piston rod 7 is slidably inserted into the inner cavity of the piston cylinder 6. The piston rod 7 slides inside the piston cylinder 6 to increase the driving force for the gunpowder-powered tool. A nail gun cartridge 8 is installed in the inner cavity of one end of the piston cylinder 6. When the firing pin 31 strikes the nail gun cartridge 8, it generates kinetic energy, triggering the combustion of the nail gun cartridge 8 and generating energy to drive the piston rod 7. A groove is opened on the top of the body 1. A pressure spring 38 is installed in the groove. A bolt 9 is installed in the inner cavity of the groove. A mounting hole 10 is opened at one end of the pressure spring 38. The mounting hole 10 and the bolt 9 are slidably inserted into each other. The bolt 9 is threaded to the bottom of the inner wall of the groove. By inserting the bolt 9 into the mounting hole 10 of the pressure spring 38 and rotating and tightening the bolt 9, its bottom is threaded to the threaded hole in the groove, pressing and fixing the pressure spring 38, and stably installing the pressure spring 38 on the body 1.
[0024] A firing method for a gunpowder-powered tool includes the following specific steps: Step 1: First, pull the trigger 41 clockwise. As the bottom of the trigger 41 rotates, it compresses and deforms the trigger return spring 49. The trigger 41 drives the rotating block 42 to rotate together. The rotating sleeve 44 at one end of the rotating block 42 moves together. The rotating sleeve 44 fits tightly with the trapezoidal boss 36, pushing the trapezoidal boss 36 to rotate, which in turn drives the firing pin 31 to rotate counterclockwise around the torsion spring pin 34. Step 2: Next, as the firing pin 31 rotates counterclockwise, the top of the firing pin 31 compresses and deforms the firing pin torsion spring 35. The firing pin 31 and the trapezoidal boss 36 rotate together, causing the rotating sleeve 44 on the trigger 41 to disengage from the trapezoidal boss 36. The elasticity of the firing pin torsion spring 35 generates a torsional force, which drives the firing pin 31 to rotate. This causes the tapered end 37 at the bottom of the firing pin 31 to collide with one end of the nail cartridge 8, generating kinetic energy and firing the nail cartridge 8. Step 3: Then, after firing, the firing pin 31 returns to its initial position through the action of the firing pin torsion spring 35 and the pressure spring 38. At the same time, after the trigger 41 reaches the release point, the elastic action of the trigger return spring 49 generates a torsional force, causing the trigger 41 to rotate. The rotating sleeve 44 on the trigger 41 moves along the shape path of the trapezoidal boss 36, so that the rotating sleeve 44 fits against the trapezoidal boss 36 and enters the initial position, thereby resetting the trigger 41.
[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A firing mechanism for a powder-actuated tool, comprising: Include: Machine body (1); Movable cavity (2), the movable cavity (2) is arranged on the machine body (1); Power structure, the power structure is arranged on the machine body (1); The firing pin structure (3) is arranged on the machine body (1), and the firing pin structure (3) is used for rotary impact to the power structure; Trigger structure (4), the trigger structure (4) is arranged on one side of the firing pin structure (3), and the trigger structure (4) is used to drive the firing pin structure (3) to rotate and trigger the rotation of the firing pin structure (3).
2. The firing mechanism of claim 1 wherein: The firing pin structure (3) comprises: Firing pin (31), the firing pin (31) is arranged on the machine body (1), and the firing pin (31) is arranged in U-shaped; Torsion spring pin hole (32), the torsion spring pin hole (32) is opened in the top of the firing pin (31); First pin shaft hole (33), the first pin shaft hole (33) is arranged on the top of the machine body (1), and the first pin shaft hole (33) corresponds with the position of the torsion spring pin hole (32); Torsion spring pin shaft (34), the torsion spring pin shaft (34) is inserted between the torsion spring pin hole (32) and the first pin shaft hole (33); Firing pin torsion spring (35), the firing pin torsion spring (35) is movably sleeved on the torsion spring pin shaft (34), and the middle part of the firing pin torsion spring (35) is inserted with the top of the firing pin (31).
3. The firing mechanism of claim 2 wherein: The firing pin structure (3) further comprises: Trapezoidal boss (36), the trapezoidal boss (36) is fixedly connected to one side of the firing pin (31); Conical end (37), the conical end (37) is arranged at the bottom of the firing pin (31); Spring piece (38), the spring piece (38) is arranged below the firing pin torsion spring (35), and one end of the spring piece (38) is attached to the outer wall of the firing pin torsion spring (35).
4. The firing mechanism of claim 3 wherein: The firing pin structure (3) further comprises: Firing pin seat (39), the firing pin seat (39) is arranged in the movable cavity (2); Guide column (310), the guide column (310) is fixedly connected to the front of the firing pin seat (39); Tapered through hole (311), the tapered through hole (311) is arranged on one side of the firing pin seat (39), and the tapered through hole (311) corresponds with the position of the conical end (37); Guide hole (312), the guide hole (312) is opened on the machine body (1), and the guide hole (312) is slidably inserted with the guide column (310).
5. The firing mechanism of claim 4 wherein: The trigger structure (4) comprises: Trigger (41), the trigger (41) is arranged on one side of the firing pin (31); Rotating block (42), the rotating block (42) is arranged on one side of the top of the trigger (41), and the rotating block (42) is arranged in L-shaped; Rotating shaft (43), the rotating shaft (43) is fixedly connected to the rotating block (42), and the rotating shaft (43) is rotatably connected with the trigger (41); Rotating sleeve (44), the rotating sleeve (44) is rotatably connected to one end of the rotating block (42), and the rotating sleeve (44) is arranged in cylindrical shape, and the rotating sleeve (44) corresponds with the position of the trapezoidal boss (36); A tension spring (45) is arranged at one end of the rotating block (42), and the other end of the tension spring (45) is arranged on the trigger (41).
6. The firing mechanism of claim 5 wherein: The trigger structure (4) further comprises: A fixed pin hole (46) is arranged at the bottom of the trigger (41); A second pin shaft hole (47) is arranged at the bottom of the machine body (1), and the position of the second pin shaft hole (47) corresponds to the fixed pin hole (46); A return spring pin shaft (48) is rotatably arranged in the second pin shaft hole (47) and the fixed pin hole (46) bracket; A trigger return spring (49) is movably sleeved on the return spring pin shaft (48), and the trigger return spring (49) is arranged at the bottom of the movable cavity (2). One end of the trigger return spring (49) is in close contact with the inner wall of the movable cavity (2).
7. The firing mechanism of claim 6 wherein: The rotating sleeve (44) is rotatably connected to one end of the rotating block (42) through a rotating shaft. A through slot (5) is formed in the trigger (41). The tension spring (45) is arranged in the through slot (5). Connection holes (11) are formed in the trigger (41) and the rotating block (42). The hook at one end of the tension spring (45) is arranged in the connection hole (11). A circular hole is formed at the bottom of the trigger (41). One end of the trigger return spring (49) is arranged in the circular hole.
8. The firing mechanism of claim 7 wherein: The power structure comprises a piston cylinder (6), a piston rod (7), and a nail shooting bullet (8). The piston cylinder (6) is fixedly installed in the machine body (1). The piston rod (7) is slidably arranged in the piston cylinder (6). The nail shooting bullet (8) is arranged in the inner cavity at one end of the piston cylinder (6).
9. The firing mechanism of claim 8 wherein: A recess is formed at the top of the machine body (1). A bolt (9) is arranged in the inner cavity of the recess. An installation hole (10) is formed at one end of the compression spring piece (38). The installation hole (10) is slidably arranged with the bolt (9). The bolt (9) is threadedly connected with the bottom of the inner wall of the recess.
10. A method of firing a firing mechanism of a powder-actuated tool, comprising: The use of the firing device of the powder power tool according to any one of claims 1-9 comprises the following specific use steps: Step one: first, rotate the trigger (41) clockwise by finger, and with the rotation of the bottom of the trigger (41), the trigger return spring (49) is compressed and deformed, and the trigger (41) drives the rotating block (42) to rotate, the rotating sleeve (44) at one end of the rotating block (42) moves together, the rotating sleeve (44) closely fits with the trapezoidal boss (36), and the trapezoidal boss (36) is pushed to rotate, thereby driving the firing pin (31) to rotate counterclockwise around the torsion spring pin shaft (34); Step two: then, with the anticlockwise rotation of the firing pin (31), the top of the firing pin (31) extrudes and deforms the firing pin torsion spring (35), the firing pin (31) and the trapezoidal boss (36) move together to rotate, so that the rotating sleeve (44) on the trigger (41) and the trapezoidal boss (36) reach the disengagement point, and the elastic action of the firing pin torsion spring (35) forms a torsional force to drive the firing pin (31) to rotate, so that the conical end (37) at the bottom of the firing pin (31) collides with one end of the nail shooting bullet (8) to generate kinetic energy, and the nail shooting bullet (8) is fired; Step three: then, through the action of the firing pin torsion spring (35) and the compression spring piece (38), the firing pin (31) returns to the initial position after firing, at the same time, after the trigger (41) reaches the disengagement point, the elastic action of the trigger return spring (49) forms a torsional force, the trigger (41) rotates, the rotating sleeve (44) on the trigger (41) moves along the shape path of the trapezoidal boss (36), so that the rotating sleeve (44) adheres to the trapezoidal boss (36) to enter the initial position, realizing the reset of the trigger (41).