Pneumatic nail gun

Abstract

A pneumatic nail gun, comprising: a nail output portion (9) filled with a fastener, and a striking portion (1), the striking portion comprising a striker (4); and a lifting portion (11) for lifting the striker, the lifting portion comprising a sliding latch (16b); the sliding of the sliding latch in a rotary disk (12) causes the lifting portion to disengage from the striker, and the striker moves in a first direction, thereby realizing nailing.

Description

A pneumatic nail gun Technical Field

[0001] The present invention relates to the technical field of nail guns, in particular to a nail gun, especially a pneumatic nail gun. Background Art

[0002] A nail gun is a tool that drives the fasteners inside it into the object. It includes a shell impact part, a lifting part, a locking structure, a nail magazine, a nail ejection part, a power supply part, a control system, a motor and a reduction mechanism.

[0003] 1. The conventional art provides a driver, comprising an ejection unit for supplying fasteners to the ejection unit; an impact unit for moving in a first direction and a second direction opposite to the first direction for impacting the fasteners supplied to the ejection unit; a rack provided on the impact unit; a rotating member rotatably provided; and a plurality of engaging members provided on the rotating member at intervals in the rotational direction of the rotating member and respectively engaged with and released from the rack by rotation of the rotating member, wherein the plurality of engaging members include: a first engaging member located in a first position in which the first engaging member engages with the rack and transmits the rotational force of the rotating member to the impact unit, thereby enabling the impact unit to move in the second direction; and a second engaging member located in a second position behind the first engaging member in the rotational direction of the rotating member and unable to engage with the rack when the first engaging member is released from the rack and the impact unit moves in the first direction.

[0004] The position of the engaging member is primarily adjusted through an adjustment mechanism comprised of a transmission plate latch and a wheel latch. This solution, through the separate adjustment mechanism and control method used to move the engaging member from the first position to the second position, complicates the nailing process. Therefore, a new firing pin lifting component is needed to optimize the nailing process of the nail gun, and improvements are also needed to the firing pin in the existing solution.

[0005] In the nail gun industry, unlocking and locking the firing pin is typically achieved through the following method: when the nail gun is in the standby position, a locking member engages the firing pin, while the piston is subjected to high-pressure gas in the cylinder. When the nail gun is ready to fire, the locking member is directly controlled to disengage from the firing pin. Due to the high-pressure gas acting on the piston, the locking member is subjected to significant pressure when disengaging from the firing pin, which can easily wear out the locking member and firing pin. Technical issues

[0006] How to optimize the nailing steps of the nail gun and make the firing pin compatible with the optimized lifting part structure of the nail gun and reduce the wear of the locking part and the firing pin. Technical Solutions

[0007] The purpose of the present invention can be achieved through the following technical solutions to optimize the steps of a nailing gun: a pneumatic nailing gun, the nailing gun includes a firing pin for striking a fastener, the nailing gun also includes a locking structure for keeping the firing pin locked and not moving in a first direction and a lifting part for moving the firing pin in a second direction, the lifting part includes a rotating disk and a plurality of latches arranged on the rotating disk, the latches are arranged continuously at intervals and in a ring shape on the rotating disk, at least one of the latches has a diameter greater than that of the other latches, a sliding latch with a diameter greater than that of the other latches disengages from the firing pin and unlocks the locking structure to allow the firing pin to move in the first direction, and the sliding latch can contact the firing pin during the movement of the firing pin in the first direction. This solution releases the engagement between the lifting part and the firing pin by sliding the sliding latch in the rotating disk, so that the firing pin moves in the first direction to achieve nailing.

[0008] The present invention aims to achieve the adaptation of a firing pin lifting portion through the following technical solution: a firing pin for a nail gun, wherein one side of the firing pin is provided with a plurality of elongated protrusions, the outer side surfaces of the elongated protrusions being provided with abutment surfaces, and grooves being formed between adjacent protrusions; the lifting portion includes a bayonet, wherein at least one bayonet has a larger diameter than the remaining bayonet, and the bayonet having a larger diameter than the remaining bayonet is a sliding bayonet; one side of the firing pin is provided with a plurality of elongated protrusions, and grooves are formed between adjacent protrusions; the diameter of the sliding bayonet is larger than the notch width of the groove. In this solution, by making the diameter of the sliding bayonet larger than the notch width of the groove, nailing is facilitated.

[0009] The object of the present invention can be achieved through the following technical solutions: a pneumatic nail gun includes a nail-out part that can be filled with fasteners and a striking part for driving the fasteners in the nail-out part out of the nail gun along a first direction, the striking part includes a striker, and the striker reciprocates in a first direction and a second direction opposite to the first direction. The nail gun also includes a lifting part for moving the striker in the second direction and a locking structure for keeping the striker locked and not moving in the first direction. The locking structure includes a locking plate, the locking plate and the nail gun body are connected by a traction shaft, and no spring is provided between the locking plate and the nail gun body. The locking structure also includes a traction part for rotating the locking plate to lock it with the striker, the traction shaft is connected to the traction part, the striker is provided with an abutment top that cooperates with the locking plate to lock the striker and a push plate that cooperates with the locking plate to unlock the striker, and a disengagement surface is provided on the side of the push plate facing the second direction. The disengagement surface allows the locking plate to rotate toward the side away from the striker and prevents the locking plate from contacting the striker during the movement of the striker in the first direction. This solution can unlock the locking plate and the striker by pushing the plate and moving the striker toward the second direction, thereby reducing wear between the striker and the locking plate. Beneficial effects

[0010] 1. It is only necessary to make the diameter of the sliding bayonet larger than the diameters of the other bayonet pins so that when the striker is nailing, the sliding bayonet pin will not prevent the striker from moving. The structure is simple and the nailing steps of the striker are simpler.

[0011] 2. In this solution, the diameter of the sliding pin is larger than the width of the groove to ensure smooth nailing.

[0012] 3. The locking plate and the striker can be unlocked by pushing the plate and moving the striker toward the second direction, thereby reducing wear between the striker and the locking plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG1 is a schematic diagram of the three-dimensional structure of a pneumatic nail gun of the present invention;

[0014] FIG2 is a schematic cross-sectional view of the pneumatic nail gun of the present invention;

[0015] FIG3 is a schematic cross-sectional view of the pneumatic nail gun of the present invention;

[0016] FIG4 is a schematic diagram of the explosion structure of the pneumatic nail gun of the present invention;

[0017] FIG5 is a schematic structural diagram of a mounting base and a buffer base of a pneumatic nail gun according to the present invention;

[0018] 6a and 6b are schematic structural diagrams of a piston and a firing pin of a pneumatic nail gun according to the present invention;

[0019] 7 is a schematic structural diagram of the lifting portion of the pneumatic nail gun of the present invention;

[0020] 8 is a schematic structural diagram of the pneumatic nail gun of the present invention, including a bayonet, a rotating disk, a rotating shaft spring, and a limiting column;

[0021] 9 is a schematic structural diagram of the lifting portion of the pneumatic nail gun of the present invention;

[0022] 10 is a schematic structural diagram of the lifting portion of the pneumatic nail gun of the present invention;

[0023] 11 is a schematic structural diagram of the piston of the pneumatic nail gun of the present invention is located in the second position;

[0024] 12 is a schematic structural diagram of the piston of the pneumatic nail gun of the present invention is located in the third position;

[0025] 13 is a schematic structural diagram of the pneumatic nail gun piston in the present invention is located in the fourth position;

[0026] 14 is a schematic structural diagram of the present invention, wherein the piston of the pneumatic nail gun is located in a first position,

[0027] FIG15 is a schematic structural diagram of the locking structure in Example 2 of the present invention and a partial enlarged view after removing the cover plate and bearing 1;

[0028] 16 is a schematic diagram of the exploded structure of the locking structure in Example 2 of the present invention and a partial enlarged view thereof;

[0029] 17 is a schematic structural diagram of the striker, rotating disk and bayonet of Example 3 of the present invention;

[0030] FIG18a is a schematic structural diagram of a striker, a rotating disk, and a latch when the striker is engaged in a nail according to a third embodiment of the present invention;

[0031] FIG18 b is a schematic structural diagram of the striker, the rotating disk and the detent pin when the striker resumes normal lifting in Example 3 of the present invention;

[0032] FIG19 is a schematic cross-sectional view of a fourth embodiment of the present invention;

[0033] 20a and 20b are schematic structural diagrams of the rotating disk and the latch in the fourth embodiment;

[0034] 21 is a schematic structural diagram of the firing pin, the rotating disk and the bayonet pin when the firing pin is engaged in the fourth embodiment;

[0035] FIG22 is a schematic structural diagram of Example 5;

[0036] FIG23 is a schematic structural diagram of Example 6;

[0037] 24 is a schematic structural diagram of the locking structure of Example 7;

[0038] 25 is a schematic structural diagram of the locking structure of Example 7;

[0039] FIG26 is a schematic cross-sectional view of the structure of Example 7;

[0040] FIG27 is a schematic structural diagram of the eighth embodiment;

[0041] FIG28 is a schematic cross-sectional view and a partial enlarged view of the structure of the eighth embodiment;

[0042] FIG29 is a schematic structural diagram of Example 9;

[0043] FIG30 is a schematic structural diagram of Example 9;

[0044] FIG31 is a schematic diagram of the cross-sectional structure and a partial enlarged view of the ninth embodiment.

[0045] In the figure, 1, striking part; 2, cylinder; 3, air chamber; 4, striker; 4a, protrusion; 4a1, protrusion 1; 4a2, protrusion 2; 4b, groove; 4b1, groove 1; 4b2, groove 2; 4b3, groove 3; 4c, protrusion; 4d, side plate 1; 4e, abutment surface; 4f, side plate 3; 4g, moving groove; 4h, guide groove; 4i, push plate; 4i1, guide surface; 4i2, Escape surface; 4j, top plate; 4j1, top surface; 4j2, sliding surface; 4k, slot; 4m, side plate 2; 5, piston; 5a, piston seal; 5b, piston guide; 5c, buffer groove; 6, buffer seat; 6a, buffer block; 6b, vent groove; 7, end cover; 8, mounting seat; 8a, vent hole; 8b, mounting plate; 8c, mounting cylinder; 8d, notch; 8e, spring groove; 9. Nail ejector; 10. Guide plate; 10a. Guide strip; 10b. Positioning slot 1; 10c. Positioning slot 2; 11. Lifting unit; 12. Rotating plate; 12a. Support slot; 12a1. Support slot 2; 12b. Reset hole; 12c. Spring 1; 12d. Limiting column; 13. Rotating shaft; 13a. Turntable; 14a. Bearing 1; 14b. Bearing 2; 15. Cover plate; 16. Bayonet; 16 a. Lifting latch 1; 16b. Sliding latch; 16b1. Pin block 1; 16c. Lifting latch 2; 16c1. Pin block 2; 16d. Lifting latch 3; 17. Limit plate; 18. Speed ​​reduction mechanism; 19. Motor; 20. Locking mechanism; 21. Solenoid; 22. Pull rod; 23. Locking plate; 23a. Attaching plate; 23b. Rotating hole; 23c. Positioning column; 23d. Positioning hole; 23e. Fixing Fixed piece; 23f, positioning ball; 23g, spring 2; 23h, spring hole; 23i, spring 3; 23j, pressing plate; 23k, reset groove; 24, traction plate; 25, traction rod; 26, rotating ring; 26a, rotating block; 27, rotating plate; 27a, top plate; 27b, limit plate; 28, rotating shaft; 29, torsion spring 1; 30, traction block; 31, connecting rod; 32, traction shaft; 33, rotating rod; 34, rotating rod shaft; 35, traction bar; 36, control system; 37, first position sensor; 38, third position sensor; 39, power supply; 40, handle; 41, trigger switch; 42, safety switch; 43, push rod; 44, pressing column; 45, reset spring; 46, nail magazine; 47, torsion spring 2; 48, reset rod; 49, clamping plate; 50, control switch; 51, nail plate. Modes for Carrying Out the Invention

[0046] Example 1

[0047] As shown in Figures 1 and 2, a nail gun is primarily designed to drive nails into objects to be fastened with fasteners, such as furniture. The nail gun includes a housing (the housing is omitted in this embodiment), a handle 40, a striking member 1, a lifting member 11, a locking mechanism 20, a nail magazine 46, a nail ejector 9, a power supply 39, a control system 36, a motor 19, and a speed reduction mechanism 18.

[0048] The nail box 46 is arranged obliquely below the nail outlet portion 9. Fasteners are installed in the nail box 46. In this embodiment, the fasteners are nails. The nails in the nail box 46 will enter the nail outlet portion 9. The nails in the nail outlet portion 9 will be replenished and enter the nail outlet portion 9 after being driven out by the nail pushing structure.

[0049] The nail gun includes a motor 19. The output shaft of motor 19 rotates in one direction when energized. A reduction mechanism 18 is connected to motor 19. The output shaft of reduction mechanism 18 is connected to rotating shaft 13 in lifting portion 11, driving rotation of rotating shaft 13. A power supply unit 39 is provided below handle 40 to provide power to motor 19 and a control system 36.

[0050] The impact part 1 of the nail gun is a structure that drives nails into the object to be fastened. The impact part 1 of the nail gun includes a cylinder 2. The cylinder 2 is hollow and cylindrical. The cylinder 2 includes an inner cylinder wall. A cylinder end cap 7 is provided at one end of the cylinder 2 to seal the end of the cylinder 2. The cylinder end cap 7 and the piston 5 form an air chamber 3 within the cylinder 2 for storing compressed fluid. In addition to being filled with air, the air chamber 3 can also be filled with an inert gas. As an example, the inert gas includes nitrogen and rare gases.

[0051] As shown in Figure 3, a movable piston 5 is mounted on the inner wall of the cylinder 2. The piston 5 is cylindrical and has an annular piston seal 5a, an oil reservoir, and a piston guide 5b on its side. The piston guide 5b is located on either side of the piston seal 5a. The oil reservoir, which is not shown, is used to store grease and is located between the piston seal 5a and the piston guide 5b. The piston guide 5b is made of plastic and ensures smooth movement of the piston within the cylinder 2, preventing deviation and reducing friction between the piston and the inner wall of the cylinder 2. The piston reciprocates within the cylinder 2 along line A, an imaginary line representing the centerline of the cylinder 2. The piston seal 5a contacts the inner wall of the cylinder 2, forming a sealing surface between the piston and the inner wall of the cylinder 2, thereby preventing leakage of compressed gas within the air chamber 3. A magnet is located within the piston and can be detected by a position sensor to determine the position of the piston within the cylinder 2.

[0052] As shown in FIG. 1 , FIG. 2 and FIG. 9 , the striking portion 1 further includes a striker 4 for pushing the nail to move, a locking structure 20 for keeping the striker 4 stationary, and a lifting portion 11 for driving the striker 4 to move.

[0053] As shown in Figures 6a and 6b, the striker 4 is elongated, with one end fixed to the piston 5 and the other end used to strike the nail. A guide groove 4h is provided above the striker 4, guiding it along a predetermined path. Multiple protrusions 4a are distributed along one side of the striker 4, which facilitate its movement. In this embodiment, there are eight protrusions, with spacing between adjacent protrusions 4a and forming a groove 4b. In this embodiment, the last protrusion 4a closest to the piston is slightly different in shape from the other seven protrusions 4a, with a larger cross-sectional area than the other seven protrusions 4a. A protrusion 4c is also provided in front of the first protrusion on the side away from the piston, forming a groove 4b between the protrusion 4c and the first protrusion 4a. Abutment surfaces 4e are provided on the horizontal outer surfaces of the protrusions 4a and the protrusion 4c, forming the side plate 3 4f of the striker 4. A moving groove 4g is provided on the protrusion 4c, and the width of the moving groove 4g is greater than the width of the groove 4b.

[0054] As shown in Figure 5, the other end of the cylinder 2 is fixed on the mounting base 8. A through hole is provided on the mounting base 8, and the striker 4 can pass through the through hole. The air inside the cylinder 2 and outside the air chamber 3 can be discharged from the through hole. A buffer seat 6 is also provided on the mounting base 8. The buffer seat 6 is fixed by the cylinder 2 and is pressed by the cylinder 2 when fixed on the mounting base 8. An opening is provided on the buffer seat 6, and the striker 4 passes through the opening. Air can also pass through the opening. A buffer block 6a protruding toward the piston 5 is provided on the buffer seat 6, and a buffer groove 5c is correspondingly provided on the piston 5. The piston 5 moves toward the buffer seat 6 to nail. When the piston 5 moves to the front end, that is, the first position, the buffer block 6a presses against the buffer groove 5c to buffer the piston 5. The specific shape of the buffer seat 6 is annular, and a circle of ventilation grooves 6b is provided around the buffer seat 6. A circle of circumferentially arranged exhaust holes 8a is provided on the side wall of the mounting seat 8. The exhaust holes 8a and the ventilation grooves 6b are connected, and the air in front of the piston 5 in the cylinder 2 can be exhausted from the opening and the exhaust holes 8a.

[0055] As shown in Figures 4 and 11 , a mounting plate 8b is provided at the front end of the mounting base 8. Below the mounting plate 8b is a nail ejection portion 9. This portion comprises a guide plate 10 secured to the bottom of the mounting plate 8b and a nail plate 51 positioned below the guide plate. The nail magazine 46 is secured to the nail plate 51. Below the guide plate 10 is a guide bar 10a, which engages the guide groove 4h of the striker 4, allowing the striker 4 to move in a predetermined direction and preventing it from deflecting. Within the mounting base 8, a mounting tube 8c is also provided on the side of the mounting plate 8b. Within the mounting tube 8c is a lifting portion 11 that drives the striker 4.

[0056] As shown in Figure 2 in conjunction with Figures 7 and 8 , the lifting portion 11 includes a rotating shaft 13. Two bearings are vertically mounted within a mounting tube 8c. The lower bearing 14b is mounted in a mounting groove within the mounting tube 8c. A cover plate 15 is fixedly attached to the mounting tube 8c, also having a mounting groove therein. The upper bearing 14a is positioned within the mounting groove within the cover plate 15. The rotating shaft 13 is mounted on two bearings at both ends and rotates about its axis B. A reduction mechanism 18 is connected to the lower end of the rotating shaft 13, which drives the rotating shaft 13 in rotation. The lifting portion 11 also includes a rotating disk 12 mounted on the rotating shaft 13. The rotating disk 12 is cylindrical and has multiple support grooves 12a arranged along the direction of rotation. The support grooves 12a are runway-shaped and extend through the upper and lower end surfaces of the rotating disk 12. The support grooves 12a extend along the radius of the rotating disk 12. In this embodiment, there are nine support grooves 12a. A reset hole 12b is also provided on the sidewall of the rotating disk 12. The reset hole 12b is oriented from the sidewall toward the center of the rotating disk 12. The reset hole 12b is connected to the support groove 12a. In this embodiment, there are two rotating disks 12, which are arranged vertically along the axis B of the rotating shaft 13. The support grooves 12a of the same size are opposite each other. There is a spacing between the two rotating disks 12, which is greater than the thickness of the protrusion of the striker 4. A portion of the striker 4 is located between the two rotating disks 12.

[0057] As shown in Figure 8, a cylindrical latch 16 is positioned in each support hole. Its two ends are located in two opposing support grooves 12a. A stop plate 17 is positioned between the bearing and the rotating disk 12. This stop plate 17 prevents the latch from protruding beyond the upper and lower ends of the rotating disk 12, allowing the latch 16 to move independently within each support groove 12a. The number of latches 16 is the same as the number of support grooves 12a, both nine. The diameters of the latches at both ends are identical. In this embodiment, the latch diameter is set to 4 mm. The diameters of the semicircles in the support grooves 12a are both 4.5 mm. The grooves on the striker 4 correspond to the latches one-to-one, and the grooves on the striker 4 are 0.5 mm larger than the diameters of the corresponding latches. A stop post 12d and an elastic member are positioned within the reset hole 12b. In this embodiment, the elastic member is a spring 12c, which is located closer to the center of the rotating disk 12 than the stop post 12d. The limiting post 12d is closer to the center of the rotating disk 12 than the bayonet pin. One end of the limiting post 12d abuts against the bayonet pin 16, and the other end of the limiting post 12d abuts against the spring 12c. The upper and lower rotating disks 12 are each provided with a corresponding limiting post 12d, and the two limiting posts 12d abut against the side walls of the upper and lower ends of the bayonet pin, respectively. Under the action of the limiting post 12d, the bayonet pin 16 is restricted to the outer end of the support groove 12a, that is, the side of the support groove 12a away from the center of the rotating disk 12. During the lifting process of the striker 4, each bayonet pin corresponds to each groove, and the bayonet pin is located in the corresponding groove and abuts against the corresponding protrusion. The structure of the sliding detent 16b, which engages with the movable groove 4g, differs slightly from the other detents. The two ends of the sliding detent 16b have the same diameter as the other detents, while the middle portion of the sliding detent 16b is provided with a cylindrical pin block 16b1. This pin block 16b1 and the main body of the sliding detent 16b may be integrally formed or separated. The diameter of the pin block 16b1 is larger than that of the sliding detent 16b and is located between the two rotating disks 12. The diameter of the pin block 16b1 is larger than the width of the groove opening; in this embodiment, the diameter of the pin block 16b1 is 7 mm. The length of the support groove 2 12a1 corresponding to the sliding detent 16b is shorter than that of the other support grooves 12a. When the pin block 16b1 is located in the movable groove 4g and abuts against the protrusion 4c, since the diameter of the pin block 16b1 is larger than the slot width of the movable groove 4g and the slot depth of the movable groove 4g is also smaller than the diameter of the pin block 16b1, the pin block 16b1 can easily fall out of the movable groove 4g. After the pin block 16b1 lifts the protrusion 4c in the second direction for a distance, as the pin block 1 and the protrusion 4c approach, the protrusion 4c will squeeze the pin block 16b1, causing the sliding pin 16b to move toward the center of the rotating disk 12 in the support groove 2 12a1, and in the process of the striker 4 hitting the nail, the pin block 16b1 abuts against the side plate 3 4f of the striker 4.Alternatively, the diameter of the entire sliding latch 16b can be made the same as the diameter of the first pin block 16b1, and the size of the second support groove 12a1 can be adjusted accordingly. A through hole is formed in the side wall of the mounting tube 8c, through which air exhausted from the cylinder 2 can enter the mounting tube 8c.

[0058] As shown in Figures 6, 9, and 10, the locking mechanism 20 includes a solenoid 21, a pull rod 22, and a locking plate 23. The solenoid 21 is connected to the control system 36 and is fixed to the mounting base 8. The solenoid 21 has a coil through which current flows. The pull rod 22 is provided with a spring 23g that forces the pull rod 22 away from the solenoid 21. The end of the pull rod 22, away from the solenoid 21, is rotatably connected to a traction plate 24. The traction plate 24 is connected to a traction rod 25, which is rotatably mounted on the mounting base 8 and positioned above the mounting base 8. The traction rod 25 is connected to the locking plate 23, driving the locking plate 23 to rotate. The locking plate 23 engages the striker 4 to lock the striker 4. In this embodiment, the striker is locked by rotating the locking plate. Alternatively, the striker can be locked by moving the locking plate left and right, forward and backward, or up and down along line A. The striker 4 is provided with a push plate 4i, located on the side of the striker 4 opposite the protrusion. The push plate 4i is provided with a guide surface 4i1 and a release surface 4i2. A push plate 4j is also provided on the side of the push plate 4i proximal to the piston 5. The push plate 4j has an arcuate push surface 4j1 and a sliding surface 4j2. The push surface 4j1 and the sliding surface 4j2 form an arcuate transition, and the push surface 4j1 and the guide surface 4i1 are positioned opposite each other. The striker 4 is also provided with a retaining groove 4k, with the push surface 4j1 connected to a side wall of the retaining groove 4k. In a horizontal direction perpendicular to the striker 4, the distance L3 between the outermost side of the push plate 4i and the striker 4 is greater than the distance L4 between the outermost side of the push plate 4j and the striker 4. The locking plate 23 includes a snap-on plate 23a and a slot adapted to the shape of the push plate 4i. When the locking plate 23 locks the striker 4, the end surface of the snap-on plate 23a abuts against the abutting surface 4j1 of the abutting plate 4j, and the snap-on plate 23a is partially located within the slot 4k. The locking plate 23 also includes a runway-shaped rotation hole 23b, within which the drawbar 25 is located, and the locking plate 23 rotates about the drawbar 25. The locking plate 23 also includes a positioning post 23c, which has a positioning hole 23d defined therein. A spring 23g is located within the positioning hole 23d. One end of the spring 23g abuts against a positioning ball 23f, and the other end of the spring 23g abuts against a fixing member 23e. The fixing member 23e and the positioning post 23c are threadedly connected, thereby confining the spring 23g and the positioning ball 23f within the positioning hole 23d. The guide plate 10 is provided with two positioning grooves, namely positioning groove 10b and positioning groove 20c. Positioning balls 23f are located in the positioning grooves, thereby stabilizing the locking plate 23 relative to the guide plate 10. Alternatively, positioning groove 10b and positioning groove 20c can be provided on the mounting base 8 or elsewhere, as long as the locking plate 23 can be stabilized.

[0059] The striker 4 moves with the piston, and the piston has four positions within the cylinder 2. As shown in Figure 1, the nail gun is equipped with a first position sensor 37 for detecting when the piston has moved to the first position. The first position sensor 37 is connected to the control system 36. The nail gun is equipped with a third position sensor 38 for detecting when the piston 5 has moved to the third position. The third position sensor 38 is connected to the control system 36. As shown in Figure 14, the piston is in the first position, which is the piston's bottom dead center within the cylinder 2. At this time, the striker 4 has driven a nail into the target object. The pin block 16b1 in the sliding latch 16b abuts against the side plate 3 4f. As shown in Figure 13, the piston 5 is in the fourth position, which is the piston's top dead center within the cylinder 2. The striker 4 is unlocked by the locking plate 23, the detent ball 23f is located in the detent groove 2 10c, and the pin block 16b1 transitions from the curved surface of the protrusion 4c to the side plate 3 4f. As shown in Figure 11, the piston 5 is in the second position of the cylinder 2. When the firing pin 4 is locked by the locking plate 23, the end face of the clamping plate 23a is against the top face 4j1 of the top plate 4j. The clamping plate 23a is partially located in the clamping groove 4k. The positioning ball 23f is located in the positioning groove 10b. The lifting clamping pin 16a located in front of the sliding clamping pin 16b is located in the groove 4b1 and is clamped with the protrusion 4a1 (the front here is determined according to the rotation direction of the lifting part 11). The groove 4b1 is the groove farthest from the piston 5. At this time, the nail gun is in standby mode. As shown in Figure 12, the third position is located between the second position and the fourth position of the cylinder 2, the clamping plate 23 abuts on the side plate 4d, and the end face of the clamping plate 23a does not abut on the top surface 4j1. At this time, since the motor 19 is in the shutdown state, the lifting pin 16a does not apply a force in the second direction to the protrusion 4a1. Under the action of the air pressure in the air chamber 3, the piston moves from the third position to the second position and finally stops at the second position. At this time, the striker 4 drives the lifting pin 16a to rotate clockwise.

[0060] As shown in Figure 1, the power supply unit 39 comprises a housing and multiple battery cells housed within the housing. A handle 40 and a trigger switch 41 are provided on the handle. A control switch (not shown) is also provided on the handle. The trigger switch 41 detects the presence or absence of operating force applied to the handle 40 and is connected to the control system 36. It also outputs a signal corresponding to the detection result. When the user holds the nail gun and their finger precisely presses the control switch, the nail gun begins normal operation. If the user releases the control switch, the control system shuts down, disabling the nail gun. Furthermore, a safety switch 42 is provided on the nail ejector 9. The safety switch 42 detects whether the push rod 43 is pressed against or released from the workpiece and outputs a signal. The control system 36 is a microcomputer equipped with input / output interfaces, a central processing unit, and a memory unit. The control system 36 processes the signals output from the trigger switch 41, the push rod 43, and the position detection sensor. The control system 36 controls the rotation and stopping of the motor 19, as well as the speed of the motor 19.

[0061] The nail gun operates as follows: When the nail gun is in standby mode, the piston is in the second position of cylinder 2. The piston is subjected to a force in the first direction F1 from air chamber 3, causing engaging plate 23a to be located within engaging groove 4k and abutting against abutting plate 4j. Lifting pin 16a, located in front of sliding pin 16b, is located within groove 14b1 and engages with protrusion 14a1 (the front position is determined by the rotation direction of lifting portion 11). Groove 14b1 is the groove farthest from the piston. Lifting pin 16a is located at the end of support groove 12a that is away from the center of rotating disk 12.

[0062] If pressing force is applied to the handle 40 and the push rod 43 is pressed against the object, the control system 36 causes the motor 19 to rotate, and the motor 19 controls the lifting part 11 to rotate counterclockwise. Counterclockwise here refers to observing the rotating disk 12 from the top perspective of the striker 4. The lifting pin 16a engaged with the protrusion 4a1 applies a force to the striker 4 in the second direction. At this time, the piston 5 overcomes the air pressure of the air chamber 3 and moves from the second position to the third position and the fourth position in the second direction F2, and the air pressure in the air chamber 3 further increases. When the piston 5 moves from the third position to the fourth position, the lifting pin 16a disengages from the groove 4b1, and the pin block 16b1 in the sliding pin 16b on the rear side of the lifting pin 16a abuts against the protrusion 4c. Since the diameter of the pin block 16b1 is larger than the slot width of the moving groove 4g and the slot depth of the moving groove 4g is also smaller than the diameter of the pin block 16b1, the pin block 16b1 can easily disengage from the moving groove 4g. After the pin block 16b1 lifts the protrusion 4c in the second direction for a distance, as the pin block 1 and the protrusion 4c approach, the protrusion 4c will squeeze the pin block 16b1, causing the sliding pin 16b to move in the support groove 2 12a1 toward the center of the rotating disk 12. At this time, the piston is in the fourth position, the striker moves in the first direction, and the pin block 16b1 abuts against the side plate 3 4f of the striker 4. As the piston moves from the second position to the fourth position, the abutment plate 4j of the striker 4 separates from the engaging plate 23a of the locking plate 23. The side plate 1 4d, guide surface 4i1, and release surface 4i2 of the striker 4, located between the abutment plate 4j and the push plate 4i, sequentially slide across the engaging plate 23a. Finally, as the engaging plate 23a passes the intersection of the release surface 4i1 and the guide surface 4i2, the pushing plate 4i causes the engaging plate 23a to rotate away from the striker 4, causing the positioning ball 23f to be located in the second positioning groove 10c. Under the influence of the high-pressure gas in the air chamber 3, the piston moves from the fourth position toward the first direction, ultimately reaching the first position. The striker 4 strikes the nail, driving it into the target object.

[0063] During the nailing process of the striker 4, the positioning ball 23f is located in the positioning groove 2 10c, so that the clamping plate 23a remains in a position not in contact with the striker 4. Due to the action of the limiting column 12d and the spring 12c, the sliding latch 16b is pressed against the side plate 3 4f of the striker 4 by the pin block 16b1.

[0064] After the nail is driven into the object, the piston reaches the first position and collides with the buffer seat 6. The buffer seat 6 absorbs part of the kinetic energy of the piston.

[0065] Once the nail is driven into the workpiece, the control system 36 continues to rotate the motor 19. The second lifting pin 16c, which is located behind the sliding pin 16b in the rotation direction of the lifting portion 11, enters the groove 4b2. As the lifting portion 11 rotates, the second lifting pin 16c engages with the second protrusion 4a2.

[0066] While the first engaged pin enters the corresponding groove and engages with the protrusion, the next pin enters the next corresponding groove and engages with the protrusion. If the next pin engages with the protrusion, the lifting part continues to rotate, and the first engaged pin disengages from the groove and is released from the protrusion.

[0067] Under the action of the lifting part 11, the piston moves again from the first position to the third position. After the third position sensor 38 detects that the piston has reached the third position, the control system 36 controls the solenoid 21 to energize, causing the pull rod 22 to move toward the solenoid 21. The movement of the pull rod 22 drives the clamping plate 23a of the locking plate 23 to rotate toward the striker 4, eventually causing the clamping plate 23a to abut against the side plate 1 4d. The control system 36 controls the motor 19 to stop. The piston, under the action of the air pressure in the air chamber 3, moves toward the second position and finally stops at the second position, completing a nailing process. At this time, the nail gun is in standby mode. The motor 19 keeps rotating during one nailing process of the nail gun, and the motor 19 drives the rotating disk 12 to rotate together. When the piston 5 moves from the fourth position to the first position, the piston is affected by the high-pressure gas, and the speed of movement of the striker 4 is greater than the speed of the rotating disk 12. During the nailing process of the striker 4, the sliding pin 16b rotates with the rotating disk 12, and in this embodiment, the pin block 16b1 of the sliding pin 16b always rests on the side plate 3 4f of the striker 4 when the piston moves from the fourth position to the first position.

[0068] As shown in Figure 1, when a nail jam occurs during use of the nail gun, after the striker 4 has driven the nail, the first position sensor 37 does not detect that the piston is in the first position. The control system 36 controls the alarm device to issue an early warning. In this embodiment, the early warning method uses an alarm light to alert the user. At this time, the pin block 16b1 of the sliding detent 16b abuts against the side plate 3 4f of the striker 4. The control system 36 controls the motor 19 to continue rotating, causing the detent and its corresponding groove to become misaligned. In this embodiment, the second lifting detent 16c after the sliding detent 16b is locked into the third groove 4b3 is used as an example. During normal operation of the nail gun, the second lifting detent 16c is originally locked into the second groove 4b2. When the lifting unit 11 raises the piston to the third position, the control system 36 controls the motor 19 to stop. At this time, the lifting pin 3 16d located in front of the lifting pin 16a is located in the groove 1 4b1. The control system 36 controls the locking plate 23 to move toward the striker 4, and the piston returns to the second position. The striker 4 remains locked. At this time, the nailing unit 9 of the nail gun is disassembled. Since the striker 4 is not pressed against the nail, the nail can be easily removed. When nailing is required again, the handle 40 is pressed and the push rod 43 is pressed against the object. The control system 36 controls the motor 19 to rotate. The motor 19 drives the rotating disk 12 to rotate. The lifting pin 3 16d is located in the groove 1 4b1 and abuts against the protrusion 1 4a1, driving the striker 4 to move. When the lifting pin 3 16d is released from the groove 1 4b1, the push plate 4i causes the clamping plate 23a on the locking plate 23 to rotate away from the striker 4. The striker 4 is unlocked and the lifting pin 16a enters the movable groove 4g. Because the depth of the movable groove 4g is smaller than that of the other grooves, after the striker 4 is lifted a certain distance in the second direction, the lifting pin 16a is pushed toward the center of the rotating disk by the protrusion 4c. The lifting pin 16a and the protrusion 4c disengage, and the piston 5 and the striker 4 move in the first direction. The lifting pin 16a abuts against the side plate 3 4f of the striker 4 and eventually enters the groove 1 4b1. The rotating disk 12 continues to rotate counterclockwise, and the lifting pin 16a abuts against the protrusion 1 4a1, driving the striker 4 in the second direction. When the sliding pin 16b moves the piston 5 to the fourth position again, the sliding pin 16b disengages from the movable groove 4g. The motor 19 continues to rotate, and the pin block 16b1 of the sliding pin 16b abuts against the side plate 3 4f, causing the striker 4 to move in the first direction to drive the nail. After the nail is driven, the piston returns to the standby state of the second position.

[0069] This solution simplifies the nailing steps of the nail gun and makes it easy to remove nails when the nail gun is stuck, and the nail gun can also be easily restored to normal operation. Example 2

[0070] As shown in Figure 15 , the structures of this embodiment and the first embodiment are essentially the same. However, the structure controlling the rotation of the locking plate 23 within the locking mechanism 20 and the structure of the locking plate 23 in this embodiment differ from those in the first embodiment. In this embodiment, the locking plate 23 has the same structure as the first embodiment, including a snap-on plate 23a, a track-shaped rotation hole 23b, a positioning post, a positioning hole 23d, a second spring 23g, a positioning ball 23f, and a fixing member 23e. Two positioning slots, positioning slot 10b and positioning slot 20c, are provided on the guide plate 10. Positioning balls 23f are positioned within the positioning slots, maintaining stability of the locking plate 23 relative to the guide plate 10.

[0071] As shown in Figure 16, the locking structure 20 also includes a rotating ring 26 mounted on the upper end of the rotating shaft 13. Specifically, a turntable 13a is provided on the portion of the rotating shaft 13 between the stop plate 17 and the bearing. The diameter of the turntable 13a is larger than that of the rotating shaft 13. The rotating ring 26 is mounted on the turntable 13a and rotates with the rotating shaft 13. A rotating block 26a is also provided on the rotating ring 26. A notch 8d is provided on the side wall of the mounting cylinder 8c. A rotating plate 27 is located in the notch 8d. One end of the rotating plate 27 is rotatably connected to the rotating shaft 28. The rotating block 26a can abut against the other end of the rotating plate 27, causing the rotating plate 27 to rotate about the rotating shaft 28. A stop piece 27a is provided on the side of rotating plate 27, and a stop piece 27b is provided above rotating plate 27. A torsion spring 29 is mounted on rotating shaft 28. One end of torsion spring 29 abuts against stop piece 27a, and the other end of torsion spring 29 is hooked onto connecting rod 31. Connecting rod 31 is fixed to traction block 30. One end of traction block 30 has a slot, and connecting rod 31 is fixed to both sides of the slot. The other end of torsion spring 29 is located within the slot. A traction shaft 32 is provided at the other end of traction block 30. Locking plate 23 has a track-shaped rotation hole 23b. Traction shaft 32 is located within rotation hole 23b, driving locking plate 23 to rotate.

[0072] The operating principle of this embodiment is as follows: When the nail gun is in standby mode, the piston is in the second position of cylinder 2. The piston is subjected to a force in the first direction F1 from air chamber 3, causing engaging plate 23a to be located within engaging groove 4k and abutting against abutting plate 4j. Lifting latch 16a, located in front of sliding latch 16b, is located within groove 14b1 and engages with protrusion 14a1. Groove 14b1 is the groove farthest from the piston. The latch is located at the end of support groove 12a that is away from the center of rotating disk 12.

[0073] If pressing force is applied to the handle 40 and the push rod 43 is pressed against the object, the control system 36 causes the motor 19 to rotate, and the motor 19 controls the lifting part 11 to rotate counterclockwise. Counterclockwise here refers to observing the rotating disk 12 from the top perspective of the striker 4. The lifting pin 16a engaged with the protrusion 4a1 applies a force to the striker 4 in the second direction. At this time, the piston 5 overcomes the air pressure of the air chamber 3 and moves from the second position to the third position and the fourth position in the second direction F2, and the air pressure in the air chamber 3 further increases. As the piston 5 moves from the third position to the fourth position, lift pin 16a disengages from groove 1 4b1. Pin block 16b1 in sliding pin 16b, located behind lift pin 16a, abuts against protrusion 4c until pin block 16b1 is unable to push protrusion 4c. This causes sliding pin 16b, reacting to the reaction force of protrusion 4c, to move within support groove 2 12a1 toward the center of rotating disk 12. At this point, the piston 5 is in the fourth position, and the striker 4 moves in the first direction. As the piston 5 moves from the second position to the fourth position, the striker 4's abutment plate 4j separates from the engaging plate 23a of the locking plate 23.

[0074] As the piston moves from the third position to the fourth position, the rotating block 26a and rotating plate 27 disengage, and the rotating plate 27 rotates toward the rotation axis 13 under the action of torsion spring 1 29. When the engaging plate 23a passes over the release surface 4i2, the engaging plate 23a rotates away from the striker 4 under the action of the push plate 4i. Finally, when the engaging plate 23a passes over the intersection of the guide surface 4i1 and the release surface 4i2, the positioning ball 23f is located in the positioning groove 2 10c. The locking plate 23 rotates the traction shaft 32, which in turn rotates the traction block 30. Under the action of the high-pressure gas in the air chamber 3, the piston moves in the first direction, eventually reaching the first position, where the striker 4 strikes the nail, driving it into the target object.

[0075] During the nailing process of the striker 4, the positioning ball 23f is located in the positioning groove 2 10c, so that the clamping plate 23a remains in a position not in contact with the striker 4. Due to the action of the limiting column 12d and the spring 12c, the sliding latch 16b is pressed against the side plate 3 4f of the striker 4 by the pin block 16b1.

[0076] Once the nail is driven into the workpiece, the control system 36 continues to rotate the motor 19. The second lifting pin 16c, located behind the sliding pin 16b in the rotational direction of the lifting portion 11, enters the groove between the protrusions. As the lifting portion 11 rotates, the second lifting pin 16c enters the second groove 4b2 and engages with the second protrusion 4a2.

[0077] Under the action of the lifting portion 11, the piston moves again from the first position to the third position. During the rotation of the rotating shaft 13, the rotating ring 26 rotates along with the rotating shaft 13, and the rotating block 26a contacts the rotating plate 27. In this embodiment, when the lifting latch 3 16d is engaged with its corresponding groove, the rotating block 26a presses on the rotating plate 27, and the rotating plate 27 rotates about the rotating shaft 28. The abutting piece 27a squeezes one end of the torsion spring 1 29, causing the torsion spring 1 29 to rotate. The other end of the torsion spring 1 29 drives the traction block 30 to rotate, which drives the traction shaft 32 to rotate. The traction shaft 32 drives the locking plate 23 to rotate, and the clamping plate 23a of the locking plate 23 moves toward the striker 4 and abuts against the side plate 2 4m. When the clamping plate 23a contacts the abutting plate 4j, the locking plate 23 is squeezed by the abutting plate 4j and deviates to the side away from the striker 4. However, the abutting shaft 32 always applies a force to the locking plate 23 to rotate toward the striker 4. When the piston moves to the third position, the engaging plate 23a abuts against the side plate 4d of the striker 4, and the control system 36 stops the motor 19. The piston, under the action of the air pressure in the air chamber 3, moves toward the second position and eventually stops at the second position. The engaging plate 23a is located in the engaging groove 4k, and the locking plate 23 locks the striker 4, completing a nailing process. The nail gun is now in a standby state.

[0078] The nail gun is also provided with a pressure relief structure after the nail gun is used. At this time, there is no nail in the nail outlet 9. A pressing plate 23j is provided on the locking plate 23, and a manually pressed pressing column 44 cooperates with the pressing plate 23j. The nail gun is in the standby state at this time, and the piston is in the second position. Manually pressing on the pressing column 44 causes the locking plate 23 to rotate, and the locking plate 23 and the firing pin 4 are separated. The piston is acted upon by the high-pressure gas in the air chamber 3 and moves in the first direction. During the movement of the firing pin 4, the latches are stuck in the corresponding grooves one by one and disengaged, so that the piston can slowly move to the first position. After the piston reaches the first position, the pressing column 44 is released, and the reset spring 45 on the pressing column 44 resets the pressing column 44, and the locking plate 23 does not rotate at this time.

[0079] When a nail jams during use of the nail gun, after the striker 4 has driven a nail, the first position sensor 37 fails to detect that the piston is in the first position. The control system 36 controls the alarm device to issue an early warning. In this embodiment, the early warning method is the same as in the first embodiment. At this point, the pin block 16b1 of the sliding detent 16b abuts against the side plate 3 4f of the striker 4. The control system 36 controls the motor 19 to continue rotating, causing the detent and its corresponding groove to become misaligned. In this embodiment, the second lifting detent 16c, which is located after the sliding detent 16b, is engaged in the third groove 4b3. During normal operation of the nail gun, the second lifting detent 16c is originally engaged in the second groove 4b2. When the lifting part 11 lifts the piston to the third position, the control system 36 controls the motor 19 to stop. At this time, the lifting pin 3 16d located in front of the lifting pin 16a is located in the groove 1 4b1. The rotating block 26a can also drive the rotating plate 27 to move, so that the locking plate 23 moves toward the firing pin 4. The motor 19 stops, the piston returns to the second position, and the firing pin 4 remains in a locked state. At this time, the nail-out part 9 of the nail gun is disassembled. Since the firing pin 4 is not against the nail, the nail can be easily removed. When nailing is required again, pressing force is applied to the handle 40 and the push rod 43 is pressed against the object part, the control system 36 controls the motor 19 to rotate, the motor 19 drives the rotating disk 12 to rotate, and the lifting pin 3 16d is located in the groove 14b1 and abuts against the protrusion 14a1 to drive the striker 4 to move. During the process of lifting the latch 3 16d out of the groove 14b1, the push plate 4i causes the clamping plate 23a on the locking plate 23 to rotate toward the side away from the striker 4, but because the rotating block 26a is always against the rotating plate 27, the locking plate 23 is always against the striker 4. The lifting pin 16a enters the moving groove 4g. Since the contact area between the lifting pin 16a and the protrusion 4c is small, the lifting pin 16a drives the striker to move a distance in the second direction. When the lifting pin 16a and the protrusion 4c are disengaged, the piston and the striker 4 move in the first direction, and the lifting pin 16a rests on the side plate 3 4f of the striker 4 and finally enters the groove 1 4b1. During this process, the rotating block 26a has been resting on the rotating plate 27. The rotating disk 12 continues to rotate counterclockwise, and the lifting pin 16a abuts against the protrusion 4a1, driving the striker 4 to move in the second direction, so that the piston moves from the third position to the fourth position. During this process, the rotating block 26a no longer abuts against the rotating plate 27, and the piston moves to the fourth position. The lifting pin 16a disengages from the groove 4b1, and the sliding pin 16b is located in the moving groove 4g. The motor 19 continues to rotate, and the pin block 16b1 of the sliding pin 16b abuts against the side plate 3 4f, and the striker 4 moves in the first direction to achieve nailing. After nailing, the piston returns to the standby state of the second position. Example 3

[0080] As shown in Figure 17 , the structures of this embodiment and the first embodiment are essentially the same, with the structure of the lifting portion 11 of this embodiment differing from that of the first embodiment. In this embodiment, a second pin block 16c1 is provided on the second lifting pin 16c located behind the sliding pin 16b. The diameter of the second pin block 16c1 is 6 mm, and the width of the second groove 4b2 in the striker 4 is 6.5 mm. The diameters of the remaining pins are all 4 mm, and no pin blocks are provided. The widths of the remaining grooves are 4.5 mm.

[0081] The working principle of nailing in this embodiment is the same as that in the first embodiment.

[0082] The working principles of the nail gun in this embodiment differ from those in the first embodiment when a nail is stuck. As shown in Figures 18a and 18b, when a nail is stuck during use, after the striker 4 has driven the nail, the first position sensor 37 does not detect that the piston is in the first position. The control system 36 controls the alarm device to issue a warning, which uses an alarm light or a buzzer. In this embodiment, the warning method uses an alarm light to alert the user. At this time, the pin block 16b1 of the sliding latch 16b abuts against the side plate 3 4f of the striker 4. The control system 36 controls the motor 19 to continue rotating, causing the latch and its corresponding groove to become misaligned. The misalignment between the latch and its corresponding groove is determined by the distance between the striker 4 and the distance between the front end of the striker 4 when the striker 4 is engaged and the front end of the striker 4 when the striker 4 is normal. In this embodiment, the coupling of the second lifting detent 16c and the third groove 4b3 is used as an example. When the striker 4 is stuck, the piston cannot reach the first position, so the second lifting detent 16c is coupled with the third groove 4b3. However, since the diameter of the second pin block 16c1 in the second lifting detent is 6 mm, it cannot be engaged with the third groove 4b3, which has a width of 4.5 mm. Therefore, the rotating disk 12 continues to rotate, and the detent after the second lifting detent 16c is engaged with the third groove 4b3. At this time, the detent and the groove have restored their one-to-one correspondence. The control system 36 controls the locking plate 23 to move toward the striker 4, and the piston returns to the second position. The striker 4 remains locked. At this time, the nailing gun's nail ejector 9 is disassembled. Since the striker 4 is not pressed against the nail, the nail can be easily removed. The nailing gun returns to normal operation. Example 4

[0083] As shown in Figure 19, the structures of this embodiment are essentially the same as those of the first embodiment, with the structure of the lifting portion 11 of this embodiment differing from that of the first embodiment. In this embodiment, as shown in Figures 20a and 20b, the second lifting pin 16c located behind the sliding pin 16b has the same diameter as the remaining pins. The sliding pin 16b and the second lifting pin 16c are movably disposed within their corresponding support grooves. As an alternative, the diameter of the second lifting pin 16c of this embodiment can be larger than the diameters of the other lifting pins. The remaining pins are disposed on the rotating disk and cannot move radially toward the rotating disk. No movable groove is provided on the protrusion, and its outer surface is inclined.

[0084] The working principle of nailing in this embodiment is basically the same as that in the first embodiment. The only difference is that in this embodiment, the pin block 1 can also drive the striker to move a distance in the second direction. When the piston is in the fourth position, the pin block 1 is disengaged from the inclined surface of the protrusion 4c.

[0085] The working principles of the nail gun in this embodiment and in the first embodiment when a nail is stuck are essentially the same. As shown in Figure 21, when a nail jam occurs during use of the nail gun, after the striker 4 has driven the nail, the first position sensor 37 fails to detect that the piston is in the first position. The control system 36 controls the alarm device to issue an early warning. In this embodiment, the early warning is provided by an alarm light to alert the user. At this point, the pin block 16b1 of the sliding latch 16b abuts against the side plate 3 4f of the striker 4. The control system 36 controls the motor 19 to continue rotating, causing the latch and its corresponding groove to become misaligned. The misalignment between the latch and its corresponding groove is determined by the distance between the striker 4's jammed position, i.e., the distance between the front end of the striker 4 when the striker 4 is engaged and its normal position. This embodiment uses the cooperation of the lifting latch 16c and the groove 4b3 as an example. When the striker 4 is stuck, because the piston cannot reach the first position, the lifting latch 16c cooperates with the groove 4b3, causing the lifting latch 16c to engage the groove 4b3, locking it into the groove 4b3. This causes the latch and groove to become misaligned. During normal operation of the nail gun, lift pin 2 16c is originally engaged with groove 2 4b2. When the lifting unit 11 raises the piston to the third position, the control system 36 controls the motor 19 to stop. At this point, lift pin 3 16d, located in front of lift pin 16a, is positioned within groove 1 4b1. The control system 36 controls the locking plate 23 to move toward the striker 4, causing the piston to return to the second position. The striker 4 remains locked, and the nail gun's nail ejector 9 can be disassembled to remove the stuck nail. When nailing is required again, a pressing force is applied to the handle 40 and the push rod 43 is pressed against the object part, the control system 36 controls the motor 19 to rotate, the motor 19 drives the rotating disk 12 to rotate, the lifting latch 3 16d is located in the groove 1 4b1 and abuts against the protrusion 1 4a1 to drive the striker 4 to move, and when the lifting latch 3 16d is disengaged from the groove 1 4b1, the push plate 4i causes the clamping plate 23a on the locking plate 23 to rotate to the side away from the striker 4, and the striker 4 is in the unlocked state, and the lifting latch 16a abuts against the inclined surface of the protrusion. On the plate, after the striker 4 is lifted a certain distance in the second direction, the lifting pin 16a and the protrusion 16c are disengaged. (Because the lifting pin 16a cannot move on the rotating disk, the striker 4 is lifted a greater distance in the second direction than in the first embodiment.) The piston 5 and the striker 4 then move in the first direction, and the lifting pin 16a abuts against the side plate 3 4f of the striker 4 and eventually enters the groove 1 4b1. The rotating disk 12 continues to rotate counterclockwise, and the lifting pin 16a abuts against the protrusion 1 4a1, driving the striker 4 in the second direction. When the piston 5 moves again to the fourth position, the sliding pin 16b disengages from the protrusion. The motor 19 continues to rotate, and the pin block 16b1 of the sliding pin 16b abuts against the side plate 3 4f, causing the striker 4 to move in the first direction to drive the nail. After the nail is driven, the piston returns to the second position, which is in standby mode. Example 5

[0086] As shown in Figure 22, the structures of this embodiment and the first embodiment are essentially the same, with the structure of the lifting portion 11 of this embodiment differing from that of the first embodiment. In this embodiment, multiple protrusions for lifting the striker 4 are distributed along one side of the striker 4. In this embodiment, there are eight protrusions, and the last protrusion closest to the piston has a slightly different shape from the other seven protrusions, with its cross-sectional area being larger than the other seven protrusions. A protrusion 4c is also provided in front of the first protrusion on the side away from the piston, with a groove formed between the protrusion 4c and the first protrusion. Abutment surfaces 4e are provided on the horizontal outer surfaces of the protrusion and the protrusion 4c. The multiple abutment surfaces 4e form the side plate 3 4f of the striker 4. In this embodiment, no movable groove 4g is provided in front of the protrusion 4c, and the outer surface of the protrusion 4c is inclined relative to the straight line A.

[0087] The number of detents is the same as the number of support holes, eight each. Each detent has a different diameter, increasing in size along the rotational direction of the rotating disk 12. In this embodiment, the smallest diameter of the lifting detent 16a is 3.5 mm, with a 0.2 mm difference between adjacent detents. The largest detent has a diameter of 4.9 mm. The semicircular diameters of the support grooves 12a are all 5 mm. Each groove on the striker 4 is 0.5 mm larger than the diameter of the corresponding detent.

[0088] The working principle of nailing in this embodiment is the same as that in the first embodiment.

[0089] When a nail is stuck in the nail gun during use, the piston is not in the first position after the firing pin 4 has driven the nail. At this time, the sliding pin 16b is against the side plate 3 4f of the firing pin 4, and the control system 36 controls the motor 19 to continue rotating. Since the diameter of the pin in contact with the firing pin 4 changes from large to small at this time, the pin with a large diameter cannot be engaged with the groove with a small diameter until the pin is engaged with the firing pin 4 and the groove corresponding to its diameter. Finally, the piston moves to the second position, the nail gun is in standby mode, and the stuck nail can be taken out. Example 6

[0090] As shown in Figure 23, the structure of this embodiment is essentially the same as that of the first embodiment, and the locking structure 20 of the first embodiment is adopted. This embodiment may also adopt the locking structure of the second embodiment. The structure of the lifting portion 11 of this embodiment differs from that of the first embodiment. In this embodiment, the sliding latch 16b is eliminated, and the support groove, reset hole, and spring 1 structure of the rotating disk 12 are eliminated. The latch is fixed to the rotating disk, and the protrusion 4c of the striker 4 is also eliminated. The number of latches is 8, and each latch has the same diameter, corresponding to the number of protrusions being 8.

[0091] The working principle of nailing in this embodiment is basically the same as that in the first embodiment, except that the movement steps between the sliding latch 16b and the movable groove 4g, as well as the movement between the pin block 1 and the side plate 3 4f of the striker 4 are missing. After the latch 1 is lifted out of the groove 1, the striker moves in the first direction. Example 7

[0092] As shown in Figures 24, 25, and 26, the structures of this embodiment are essentially the same as those of the first embodiment. However, the structure of the locking mechanism 20 controlling the rotation of the locking plate 23 and the structure of the locking plate 23 in this embodiment differ from those in the first embodiment. Furthermore, this embodiment also adopts the latch structure of the fourth embodiment. In this embodiment, the locking plate 23 further includes a rotation hole 23b and a reset groove 23k. The rotation hole 23b is provided with a rotation axis for the locking plate 23, about which the locking plate 23 rotates. A retaining plate 49 is also fixedly connected below the guide plate 10 of the striker 4. The locking plate 23 is located between the guide plate 10 and the retaining plate 49, with the ends of the rotation axis of the locking plate 23 being fixed to the guide plate 10 and the retaining plate 49, respectively. A reset lever 48 is also provided between the locking plate 23 and the guide plate 10. The reset lever 48 is located on the side of the rotation axis of the locking plate 23 away from the piston 5. A second torsion spring 47 is further provided on the rotating shaft of the locking plate 23 , one end of the second torsion spring 47 is located in the reset groove 23 k , and the other end of the second torsion spring 47 abuts against the reset rod 48 , so that the second torsion spring 47 causes the clamping plate 23 a to move toward the striker 4 .

[0093] The working principle of this embodiment is as follows: when the piston is located at the second position, the clamping plate 23a is located in the clamping groove 4k and abuts against the abutting plate 4j, the firing pin 4 is in a locked state, and the nail gun is in a standby state.

[0094] If pressing force is applied to the handle 40 and the push rod 43 is pressed against the object, the control system 36 causes the motor 19 to rotate, and the motor 19 controls the lifting part 11 to rotate counterclockwise. Counterclockwise here refers to observing the rotating disk 12 from the top perspective of the striker 4. The lifting pin 16a engaged with the protrusion 4a1 applies a force to the striker 4 in the second direction. At this time, the piston overcomes the air pressure of the air chamber 3 and moves from the second position to the fourth position in the second direction F2, and the air pressure in the air chamber 3 further increases. As the piston moves from the third position toward the fourth position, lifting pin 16a disengages from groove 1b1, allowing pin block 16b1 to enter the movable groove, causing the striker to move in the second direction. Because the diameter of pin block 16b1 is larger than the width of the movable groove 4g, and the groove depth of movable groove 4g is also smaller than the diameter of pin block 16b1, pin block 16b1 easily disengages from movable groove 4g. After pin block 16b1 lifts protrusion 4c a certain distance in the second direction, protrusion 4c causes sliding pin 16b to move within support groove 2 12a1 toward the center of rotating disk 12. When the piston is in the fourth position, pin block 16b1 in sliding pin 16b behind lifting pin 16a disengages from the movable groove in protrusion 4c, causing the striker to move in the first direction.

[0095] During the movement of the piston from the second position to the fourth position, the striker 4's abutting plate 4j and the clipping plate 23a separate. The striker's abutting surface 4j1, side plate 1 4d, guide surface 4i1, and release surface 4i2 sequentially pass over the clipping plate 23a. As the clipping plate 23a passes the intersection of the guide surface 4i1 and the release surface 4i2, the clipping plate 23a, under the action of the push plate 4i, reaches its furthest position from the side of the striker 4. When the piston is in the fourth position, the clipping plate 23a passes the intersection and moves onto the guide surface 4i1. Because the piston is under the action of the high-pressure gas in the air chamber 3, the striker 4 moves rapidly in the first direction. The locking plate 23 does not have time to engage the abutting plate 4j, and instead skips over the abutting plate 4j and abuts against the side plate 2 4m of the striker 4. The piston eventually reaches the first position, and the striker 4 strikes the nail, driving it into the target object.

[0096] Once the nail is driven into the workpiece, the control system 36 continues to rotate the motor 19. Under the action of the lifting portion 11, the piston moves again from the first position to the third position. The locking plate 23 sequentially traverses the side plate 2 4m, the sliding surface 4j2, the abutment surface 4j1, the release surface 4i2, and the guide surface 4i1. After the piston reaches the third position, the locking plate rests on the guide surface 4i1. At this point, the motor stops, and the piston, acting under air pressure, moves in the first direction. Because the lifting latch 16a is locked in the groove 1, the lifting portion applies resistance to the striker as it moves in the first direction. The locking plate 23 does not directly jump over the abutment plate, but instead gradually engages from the guide surface 4i1 to the abutment plate 4j, placing the nail gun in a standby mode. Example 8

[0097] As shown in Figures 27 and 28, the structures of this embodiment and the first embodiment are essentially the same. However, the structure of the locking mechanism 20 in this embodiment that controls the rotation of the locking plate 23 and the structure of the locking plate 23 differ from those in the first embodiment. Alternatively, the latch in this embodiment may also utilize the structures of the third, fourth, or fifth embodiments. In this embodiment, the direction in which the locking plate 23 rotates when the solenoid 21 is energized is different, and the striker 4 is provided with only abutment plate 4j and no push plate 4i. Alternatively, the abutment plate 4j may be replaced with abutment groove. The abutment groove is formed by an inwardly extending groove in the surface of the striker 4. The abutment groove also serves to engage the locking plate 23, locking the striker 4 with the locking plate 23. A spring groove 8e is provided in the mounting seat 8, and a spring hole 23h is provided in the locking plate 23. A spring 23i is located within the spring hole 23h, with one end of the spring 23i extending into the spring groove 8e.

[0098] The working mode of the lifting part 11 in this embodiment is different from that in the first embodiment. The difference is that the second and third positions do not exist in this embodiment. The details are as follows:

[0099] In this embodiment, the standby state is the fourth position, where the locking plate engages the abutment plate, locking the striker, and the sliding latch is just about to disengage from the movable slot. If pressure is applied to the handle 40 and the push rod 43 is pressed against the object, the control system 36 rotates the motor 19, which in turn activates the solenoid 21, rotating the locking plate 23. This moves the locking plate 23 away from the striker 4, compressing the spring 3 23i and causing the piston and striker 4 to move in the first direction.

[0100] When the striker 4 returns from the first position to the fourth position, the control system 36 controls the motor 19 to stop, the solenoid 21 to be de-energized, and the locking plate 23 rotates toward the striker 4 under the action of the spring 23i and the spring of the solenoid 21. The engaging plate 23a is located in the engaging groove 4k, and the locking plate 23 locks the striker 4, completing a nailing process. The nail gun is now in the standby state again. Embodiment 9

[0101] As shown in Figures 29, 30, and 31, the structures of this embodiment and the eighth embodiment are essentially the same. However, the structure controlling the rotation of the locking plate 23 in the locking mechanism 20 of this embodiment differs from that of the eighth embodiment. Alternatively, the latch in this embodiment may employ the structure of the third, fourth, or fifth embodiments. In this embodiment, the locking mechanism 20 includes a rotating ring 26 that is sleeved over the upper end of the rotating shaft 13. Specifically, a turntable 13a is provided between the stop plate 17 and the bearing of the rotating shaft 13. The diameter of the turntable 13a is larger than that of the rotating shaft 13. The rotating ring 26 is sleeved over the turntable 13a and rotates with the rotating shaft 13. A rotating block 26a is also provided on the rotating ring 26. A notch 8d is provided in the sidewall of the mounting tube 8c. A rotating rod 33 is located in the notch 8d. The rotating rod 33 rotates about a rotating rod axis 34, which is fixed between the cover plate 15 and the mounting tube 8c. A traction bar 35 is rotatably connected to the rotating rod 33. The traction bar 35 is provided with a groove. One end of the rotating rod 33 is located in the groove and is fixed to the traction bar 35 by a pin. The traction bar 35 and the locking plate 23 rotate via a traction shaft 32.

[0102] The working mode of the lifting portion 11 in this embodiment is the same as that of the first embodiment, and the difference lies in the working mode of the locking structure 20. When the nail gun is in the standby state and the piston is in the fourth position, the locking plate 23 abuts against the abutting plate 4j.

[0103] If pressure is applied to the handle 40 and the push rod 43 is pressed against the object, the control system 36 causes the motor 19 to rotate, causing the rotating block 26a to rotate a small angle and then squeeze the rotating rod 33. The squeezed end of the rotating rod 33 moves away from the rotating axis 13, and the rotating rod 33 rotates about the rotating rod axis 34. The other end of the rotating rod 33 moves in the second direction, causing the pull bar 35 to move toward the side of the mounting seat 8. The pull bar 35 drives the locking plate 23 to rotate, moving the locking plate 23 away from the striker 4. The spring 3 23i is compressed, and the piston and striker 4 move in the first direction. The rotating block 26a and the rotating rod 33 are separated until the lifting pin 16c and the groove 4b2 engage. After the rotating block 26a and the rotating rod 33 disengage, the locking plate 23 rotates toward the striker 4 under the action of the spring 23i. As the striker 4 returns from the first position to the third position, the locking plate 23 abuts against the striker 4. At this point, one end of the rotating rod 33 moves toward the rotation axis 13 under the action of the pull bar 35. When the piston moves to the fourth position, the control system 36 controls the motor 19 to stop, and the locking plate 23 locks the striker 4, completing a nailing cycle. The nail gun is now in standby mode. Example 10

[0104] This embodiment has essentially the same structure as the first embodiment, differing in that the locking mechanism in this embodiment prevents reverse rotation of the rotating disk 12 by providing a one-way clutch on the reduction mechanism 18 or a motor brake pad on the motor 19. This prevents the motor from stopping after reaching the third position, locking the rotating disk 12 and the firing pin, placing the nail gun in a standby mode. When nailing is required, the motor continues to rotate, causing the piston to move to the fourth position, and the firing pin to move in the first direction, thereby achieving nailing. After the piston reaches the first position, the motor controls the rotating disk to continue rotating, raising the piston to the third position.

Claims

1. A pneumatic nail gun, comprising a nail-extracting portion (9) capable of being filled with fasteners and an impact portion (1) for driving the fasteners in the nail-extracting portion (9) out of the nail gun along a first direction, wherein the impact portion (1) comprises a firing pin (4), and the firing pin (4) reciprocates in a first direction and a second direction opposite to the first direction, and the nail gun further comprises a locking structure (20) for preventing the firing pin (4) from moving in the first direction and a lifting portion (11) for moving the firing pin (4) in the second direction, wherein the lifting portion (11) comprises a rotating disk (12) and a plurality of latches (16) arranged on the rotating disk (12), and is characterized in that: The latches (16) are arranged in a continuous interval and in a ring shape on the rotating disk (12), wherein the diameter of at least one of the latches is larger than the diameters of the other latches, and the latches with a diameter larger than the other latches are sliding latches (16b). When the sliding latches (16b) are disengaged from the striker (4) and the locking structure (20) is unlocked so that the striker (4) moves in the first direction, the sliding latches (16b) can maintain sliding contact with the striker (4) during the movement of the striker (4) in the first direction.

2. A pneumatic nail gun according to claim 1, characterized in that: The latch also includes a lifting latch, which can engage with the striker to move the striker (4) in the second direction. The lifting latch (16b) includes a lifting latch 2 (16c) located on the rear side of the sliding latch (16b) in the rotation direction. The lifting latch 2 (16c) is movably arranged in the rotating disk (12).

3. A pneumatic nail gun according to claim 2, characterized in that: The remaining lifting pins except the second lifting pin (16c) are arranged on the rotating disk (12) and their positions on the rotating disk (12) are kept fixed.

4. A pneumatic nail gun according to claim 2, characterized in that: The second lifting pin (16c) and the remaining lifting pins are movably arranged on the rotating disk (12).

5. The pneumatic nail gun according to claim 3, characterized in that: The diameter of the second lifting pin (16c) is equal to the diameter of the remaining lifting pins, or the diameter of the second lifting pin (16c) is greater than the diameter of the remaining lifting pins, and the diameters of the remaining lifting pins are equal.

6. A pneumatic nailing gun according to claim 4, characterized in that: The diameter of the second lifting pin (16c) is larger than the diameters of the remaining lifting pins, and the diameters of the remaining lifting pins are equal, or the diameter of the second lifting pin (16c) is larger than the diameters of the remaining lifting pins, and the diameters of the remaining lifting pins gradually decrease along the rotation direction of the rotating disk (12).

7. A pneumatic nailing gun according to claim 5 or 6, characterized in that: The rotating disk (12) is further provided with a support groove (12a), the support groove (12a) passes through the upper and lower end surfaces of the rotating disk (12), a movable latch in the rotating disk (12) is arranged in the support groove (12a), and the striker (4) is provided with a protrusion (4c) and a plurality of protrusions (4a), the protrusion (4c) abuts against the sliding latch (16b), and when the striker (4) moves in the first direction, the protrusion (4c) abuts against the sliding latch (16b), so that the sliding latch (16b) moves in the support groove (12a) toward the center of the rotating disk (12) and the sliding latch (16b) abuts against the side of the striker (4).

8. The pneumatic nail gun according to claim 7, characterized in that: The sliding bayonet (16b) comprises a sliding bayonet body and a cylindrical pin block (16b1) sleeved on the sliding bayonet body. The sliding bayonet body and the pin block (16b1) are integrally formed or have a split structure.

9. The pneumatic nail gun according to claim 8, characterized in that: There are two rotating disks (12) and they are distributed vertically along the axis of the rotating shaft (13) on the rotating disk (12). The supporting grooves (12a) are opposite to each other. There is a distance between the two rotating disks (12). The distance is greater than the thickness of the protrusion (4a) and the protrusion (4c) in the striker (4). A part of the striker (4) is located between the two rotating disks (12).

10. The pneumatic nail gun according to claim 9, characterized in that: The locking structure (20) includes a locking plate (23), the locking plate (23) includes a rotating hole (23b) and a reset groove (23k), the rotating hole (23b) is provided with a locking plate (23) rotating shaft, the locking plate (23) rotates around the locking plate (23) rotating shaft, the nail-out portion includes a guide plate (10), the striker (4) is located below the guide plate (10), and a card plate (49) is fixedly connected below the guide plate (10), and the locking plate (23) is located between the guide plate (10) and the card plate The two ends of the locking plate (23) rotating shaft are respectively fixed on the guide plate (10) and the clamping plate (49), and a reset rod (48) is provided between the locking plate (23) and the guide plate (10). A torsion spring (47) is also provided on the rotating shaft of the locking plate (23), one end of the torsion spring (47) is located in the reset groove (23k), and the other end of the torsion spring (47) is against the reset rod (48), and the torsion spring (47) causes the clamping plate (23a) to move toward the striker (4).

11. The pneumatic nail gun according to claim 9, characterized in that: The locking structure (20) includes a locking plate (23) capable of locking the striker (4), the striker (4) is provided with a push plate (4j), the striking portion (1) includes a mounting seat (8), the mounting seat (8) is provided with a spring groove (8e), the locking plate (23) is provided with a spring hole (23i), the spring hole (23i) is provided with a spring three (23j) for making the locking plate (23) push against the push plate (4j) of the striker (4), and one end of the spring three (23j) extends into the spring groove (8e).

12. The pneumatic nail gun according to claim 11, characterized in that: The locking structure (20) further includes a solenoid (21), which is connected to the locking plate (23) and drives the locking plate (23) to rotate in a direction away from the striker (4).

13. The pneumatic nail gun according to claim 11, characterized in that: The locking structure (20) includes a rotating ring (26) which is sleeved on the upper end of the rotating shaft (13) and rotates along with the rotating shaft (13), and a rotating block (26a) is also provided on the rotating ring (26). The impact part (1) also includes a mounting seat (8), and a rotating rod (33) is provided on the mounting seat (8). A traction bar (35) is rotatably connected to the rotating rod (33), and the traction bar (35) and the locking plate (23) are connected via a traction shaft (32).

14. The pneumatic nail gun according to claim 9, characterized in that: The lifting part is connected to a speed reduction mechanism, and the speed reduction mechanism is connected to a motor. The locking structure (20) is a motor brake that keeps the motor (19) rotating in one direction or a one-way clutch that keeps the speed reduction mechanism rotating in one direction.

15. A pneumatic nail gun, comprising a nail-extracting portion (9) capable of being filled with fasteners and an impact portion (1) for driving the fasteners in the nail-extracting portion (9) out of the nail gun along a first direction, the impact portion (1) comprising a firing pin (4), the firing pin (4) reciprocating in a first direction and a second direction opposite to the first direction, the nail gun further comprising a locking structure (20) for preventing the firing pin (4) from moving in the first direction and a lifting portion (11) for moving the firing pin (4) in the second direction, characterized in that: The lifting portion (11) includes a latch (16), wherein the diameter of at least one latch (16) is larger than the diameters of the remaining latches, and the latch with a diameter larger than the diameters of the remaining latches is a sliding latch (16b). A plurality of long protrusions (4a) are provided on one side of the striker (4), and grooves (4b) are formed between adjacent protrusions (4a). The diameter of the sliding latch (16b) is larger than the slot width of the groove (4b).

16. The firing pin of a pneumatic nail gun according to claim 15, characterized in that: The outer side surface of the long protrusion (4a) is provided with a supporting surface (4e), and the length of the supporting surface (4e) is greater than the width of the notch of the groove (4b).

17. The firing pin of a pneumatic nail gun according to claim 15 or 16, characterized in that: A positioning column (23c) is further provided on the locking plate (23), a positioning hole (23d) is provided in the positioning column (23c), a spring 2 (23g) is provided in the positioning hole (23d), one end of the spring 2 (23g) abuts against the positioning ball (23f), and the other end of the spring 2 (23g) abuts against the fixing member (23e), and the fixing member (23e) and the positioning column (23c) are fixedly connected to confine the spring 2 (23g) and the positioning ball (23f) in the positioning hole (23d), and the nail-out portion (9) includes a guide plate (10), a positioning groove is provided on the guide plate (10), and the positioning ball (23f) is located in the positioning groove so that the locking plate (23) remains stable relative to the guide plate (10).

18. The firing pin of a pneumatic nail gun according to claim 17, characterized in that: The outer side surface of the protrusion (4c) is inclined or a moving groove (4g) is provided on the protrusion (4c).

19. The firing pin of a pneumatic nail gun according to claim 18, characterized in that: The lifting portion (11) includes a latch (16), and the latch (16) is continuously spaced and arranged in a ring shape on the rotating disk (12), wherein the diameter of at least one of the latches is larger than the diameters of the other latches, and the latch having a diameter larger than the other latches is a sliding latch (16b). When the sliding latch (16b) is disengaged from the striker (4) and the locking structure (20) is unlocked so that the striker (4) moves in the first direction, the sliding latch (16b) can maintain sliding contact with the striker (4) during the movement of the striker (4) in the first direction.

20. The pneumatic nail gun according to claim 19, characterized in that: The latch (16) further includes a lifting latch, which can engage with the striker to move the striker (4) in the second direction. The lifting latch includes a second lifting latch (16c) on the rear side of the sliding latch (16b) in the rotation direction. The second lifting latch (16c) is movably arranged in the support groove (12a).

21. The firing pin of a pneumatic nail gun according to claim 20, characterized in that: The impact part (1) includes a cylinder (2) and a piston (5) moving in the cylinder (2), the striker (4) is fixed on the piston (5), the cylinder (2) is fixed on the mounting seat (8), and the mounting seat (8) is also provided with an annular buffer seat (6), a circle of ventilation grooves (6b) are provided around the buffer seat (6), and a circle of circumferentially arranged exhaust holes (8a) are provided on the side wall of the mounting seat (8), and the exhaust holes (8a) and the ventilation grooves (6b) are connected.

22. A pneumatic nail gun, comprising a nail-extracting portion (9) capable of being filled with fasteners and an impact portion (1) for driving the fasteners in the nail-extracting portion (9) out of the nail gun along a first direction, the impact portion (1) comprising a firing pin (4), the firing pin (4) reciprocating in a first direction and a second direction opposite to the first direction, the nail gun further comprising a lifting portion (11) for moving the firing pin (4) in the second direction and a locking structure (20) for keeping the firing pin (4) locked and not moving in the first direction, the locking structure (20) comprising a locking plate (23), characterized in that: There is no spring between the locking plate (23) and the nail gun body for moving the locking plate toward the firing pin. The locking structure (20) further includes a traction portion for moving the locking plate (23) and locking the firing pin (4). The firing pin (4) is provided with a top portion for cooperating with the locking plate (23) to lock the firing pin (4) and a push plate (4i) for cooperating with the locking plate (23) to unlock the firing pin (4). The push plate (4i) is provided with an inclined escape surface (4i2) on the side facing the second direction. The escape surface (4i2) causes the locking plate (23) to move toward the side away from the firing pin (4) and causes the locking plate (23) to remain separated from the firing pin (4) during the movement of the firing pin (4) toward the first direction.

23. The pneumatic nail gun according to claim 22, characterized in that: In the horizontal direction perpendicular to the striker (4), the distance L3 between the outermost side of the push plate (4i) and the striker (4) is greater than the distance L4 between the outermost side of the top and the striker (4).

24. A pneumatic nailing gun according to claim 23, characterized in that: The striker (4) is further provided with a slot (4k), the abutting top portion is a abutting plate (4j), and the abutting surface (4j1) on the abutting plate (4j) is connected to a side wall of the slot (4k).

25. The pneumatic nail gun according to claim 24, characterized in that: The locking plate (23) includes a snap-in plate (23a) and a slide groove adapted to the shape of the push plate (4i). When the locking plate (23) locks the striker (4), the end face of the snap-in plate (23a) abuts against the top face (4j1) of the top plate (4j), and a portion of the snap-in plate (23a) is located in the slot (4k).

26. A pneumatic nailing gun according to claim 25, characterized in that: The locking structure (20) includes a solenoid (21) and a pull rod (22) connected to the solenoid (21), the solenoid (21) is connected to the control system (36), the solenoid (21) is fixed on the mounting seat (8), the pull rod (22) is rotatably connected to the traction plate (24) at one end away from the solenoid (21), the traction plate (24) is connected to the traction rod (25), the traction rod (25) is rotatably arranged on the mounting seat (8), the traction plate (24) is located on the mounting seat (8), the locking plate (23) further includes a runway-shaped rotating hole (23b), the traction rod (25) is located in the rotating hole (23b), and the traction rod (25) locks the plate (23) to rotate.

27. The pneumatic nail gun according to claim 25, characterized in that: The lifting portion (11) includes a rotating disk (12) provided with a rotating shaft (13), and the locking structure (20) includes a rotating ring (26) sleeved on the rotating shaft (13), and the rotating ring (26) rotates along with the rotating shaft (13). The rotating ring (26) is also provided with a rotating block (26a), and the rotating block (26a) is connected to the rotating plate (27). The rotation of the rotating plate (27) is connected to the rotating shaft (28), and the rotating block (26a) can abut against the other end of the rotating plate (27) so that the rotating plate (27) rotates around the rotating shaft (28).

28. A pneumatic nail gun according to claim 27, characterized in that: A resisting piece (27a) is provided on the side of the rotating plate (27), a limiting piece (27b) is provided above the rotating plate (27), a torsion spring (29) is provided on the rotating shaft (28), one end of the torsion spring (29) is against the resisting piece (27a), the other end of the torsion spring (29) is connected to the connecting rod (31) in a hook shape, the connecting rod (31) is fixed on the traction block (30), the other end of the traction block (30) is provided with a traction shaft (32), the traction shaft (32) and the traction block (30) are connected to drive the locking plate (23) to rotate.

29. A nailing gun according to claim 26 or 28, characterized in that: The striking portion (1) includes a piston (5), and the piston (5) reciprocates in the cylinder (2) in a first direction and a second direction opposite to the first direction. When the piston (5) is in the first position in the cylinder (2), the striker (4) drives the fastener out of the nail gun. When the piston (5) is in the fourth position, the striker (4) is not locked by the locking plate (23) and moves in the first direction. When the piston (5) is in the second position of the cylinder (2), the striker (4) is locked by the locking plate (23), and the end face of the clamping plate (23a) abuts against the top face (4j1) of the top plate (4j). At this time, the nail gun is in a standby state. There is also a third position between the second position and the fourth position of the cylinder (2). The clamping plate (23a) is located between the push plate (4i) and the top plate (4j). The piston (5) moves toward the second position and finally stops at the second position.

30. The firing pin of a pneumatic nail gun according to claim 29, characterized in that: The lifting portion (11) includes a latch (16), and the latch (16) is continuously spaced and arranged in a ring shape on the rotating disk (12), wherein the diameter of at least one of the latches is larger than the diameters of the other latches, and the latch having a diameter larger than the other latches is a sliding latch (16b). When the sliding latch (16b) is disengaged from the striker (4) and the locking structure (20) is unlocked so that the striker (4) moves in the first direction, the sliding latch (16b) can maintain sliding contact with the striker (4) during the movement of the striker (4) in the first direction.

31. A pneumatic nailing gun according to claim 30, characterized in that: The latch (16) further includes a lifting latch, which can engage with the striker to move the striker (4) in the second direction. The lifting latch includes a second lifting latch (16c) on the rear side of the sliding latch (16b) in the rotation direction. The second lifting latch (16c) is movably arranged in the support groove (12a).

32. The nail gun according to claim 29, characterized in that: The rotating disk (12) is provided with latches, and the latches are discontinuously distributed on the rotating disk (12).

Images