CN109623736B

CN109623736B - Nail gun with reliable work

Info

Publication number: CN109623736B
Application number: CN201811542445.7A
Authority: CN
Inventors: 杨伟明; 韩挺
Original assignee: Zhejiang Prade Electric Co ltd
Current assignee: Zhejiang Prade Electric Co ltd
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2022-11-08
Anticipated expiration: 2038-12-17
Also published as: CN109623736A

Abstract

The invention provides a nail gun with reliable work, which comprises a shell, a trigger, a motor, a first cylinder, a second cylinder, a crank, a connecting rod, a nail shooting assembly and a nail feeding assembly, wherein the second cylinder is positioned in the first cylinder, a first piston is arranged in the first cylinder, a second piston is arranged in the second cylinder, the connecting rod is in transmission connection with the first piston, the motor is in transmission connection with the crank through a transmission mechanism and drives the first piston to axially move in the first cylinder through the connecting rod, the nail gun comprises a trigger switch, a trigger ejector rod is arranged on the trigger, the transmission mechanism comprises a speed reducer, a transmission shaft and a sleeved cam, a self-locking ejector rod is arranged between the cam and the trigger switch, the cam pushes the self-locking ejector rod to trigger the trigger switch when moving to a high point and enables the trigger ejector rod to be separated from the trigger switch, the self-locking ejector rod is separated from the trigger switch when the cam moves to a low point, the motor is controlled to complete a cycle of action through a mechanical structure, and the work reliability of the nail gun can be well ensured.

Description

Nail gun with reliable work

Technical Field

The invention relates to the field of electric tools, in particular to a nail gun which works reliably.

Background

A nail gun is a tool capable of quickly driving nails into objects such as wood, and is commonly used in the field of woodworking, while a pneumatic nail gun is one of the types commonly used in the nail gun. The existing air nail gun generally uses an air connecting pipe to be connected with an external compressed air source with certain pressure as power to push a firing pin to move, namely, another set of equipment for generating a high-pressure air source, such as an air compressor and the like, is required to be matched, and a lot of inconvenience is caused when the air nail gun is used.

The existing nail gun can well solve the problems by arranging a large air cylinder and a small air cylinder in a shell and utilizing the pressure difference generated by the volume difference of the large air cylinder and the small air cylinder to impact and nail. However, there still exists a problem, such as the position sensor is provided to detect the position of the plunger to ensure that the plunger stops to be ready for the next firing pin movement when moving to a certain position, i.e. through electronic detection and control, but the electronic detection and control has instability, thereby affecting the reliability of the nailing, i.e. the operational reliability of the nail gun is not good.

Disclosure of Invention

The invention aims to provide a nail gun which works reliably.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a nail rifle of reliable operation, includes casing, trigger, motor, first cylinder, second cylinder, crank, connecting rod, nailing subassembly and send the nail subassembly, the second cylinder is located first cylinder, is equipped with first piston in the first cylinder, is equipped with the second piston in the second cylinder, the connecting rod is connected with first piston transmission, the motor passes through drive mechanism and is connected with crank transmission and drive first piston axial motion in first cylinder through the connecting rod, be equipped with the circulation air flue between first cylinder and the second cylinder, wherein, the nail rifle includes trigger switch, is equipped with the trigger ejector pin that can trigger switch after buckling the trigger on the trigger, drive mechanism includes the reduction gear, locates the epaxial cam of transmission shaft and cover that is connected with the reduction gear transmission, is equipped with the auto-lock ejector pin between cam and the trigger switch, is equipped with when cam motion is to the high point in order to promote auto-lock ejector pin trigger switch and make trigger ejector pin break away from trigger switch, and the ejector pin breaks away from trigger switch when cam motion is to the low point.

Furthermore, be equipped with the pivot on the trigger, be equipped with the commentaries on classics hole on the trigger ejector pin, trigger the ejector pin and locate in the pivot through changeing the pot head so that trigger the ejector pin and can trigger switch along with the trigger motion.

Furthermore, still the cover is equipped with the torsional spring that makes the trigger ejector pin take place to deflect in the pivot, is equipped with the draw-in groove on the trigger ejector pin, and torsional spring one end card is held in the draw-in groove of trigger ejector pin, and the other end is contradicted on the dog of trigger.

Furthermore, a convex block is arranged on the cam, and when the cam moves to a high point, the convex block triggers the lower end of the trigger ejector rod to enable the trigger ejector rod to deflect and separate from the trigger switch.

Furthermore, the lower end of the trigger ejector rod is provided with a guide inclined plane which is convenient for the bump to touch.

Furthermore, the lug is located on one side of the cam close to the speed reducer, and the lug and the cam are of an integral structure.

Furthermore, the lower end of the self-locking ejector rod is provided with a matching part matched with the cam, and the matching part is in a trapezoid shape with a small upper part and a large lower part.

Furthermore, the casing comprises a first casing and a second casing, and the first casing and the second casing are mutually buckled to form the casing.

Furthermore, a trigger elastic piece which enables the trigger to reset automatically is arranged in the machine shell.

Furthermore, the nail gun also comprises an MCU and a change-over switch which can freely change over the single-shot or continuous-shot mode of the nail gun, and the change-over switch is electrically connected with the MCU.

In the present invention, the term "when the cam moves to the high point" refers to when the first piston and the second piston move to the upper limit positions, and the term "when the cam moves to the low point" refers to when the first piston and the second piston move to the lower limit positions.

After the technical scheme is adopted, the invention has the following advantages:

1. the nailing gun is provided with a trigger switch, a trigger ejector rod is arranged on a trigger, the trigger switch can be triggered after the trigger is buckled, a motor is electrified to rotate and drives a crank to move through a transmission mechanism, a connecting rod drives a first piston to axially move in a first air cylinder, a circulating air passage is arranged between the first air cylinder and a second air cylinder, the first piston moves to compress air in the first air cylinder, the circulating air passage conveys the compressed air to the second air cylinder, the compressed air is applied to the second piston, the second piston releases and rapidly moves downwards under the air pressure to drive a firing pin to fire a nail, the transmission mechanism specifically comprises a speed reducer, a transmission shaft in transmission connection with the speed reducer and a cam sleeved on the transmission shaft, and a self-locking ejector rod is arranged between the cam and the trigger switch.

2. Through set up the pivot on the trigger, be equipped with on the trigger ejector pin and change the hole, and trigger the ejector pin and locate in the pivot through changeing the hole cover for trigger the ejector pin and can trigger switch along with the trigger motion, this kind of structure is simple structure and reliable not only, and job stabilization simultaneously, in order to guarantee the reliability that triggers trigger switch, thereby guarantee the reliability of motor operation, also be the reliability of guaranteeing the nailing gun.

3. Still the cover is equipped with the torsional spring that makes the trigger ejector pin take place to deflect in the pivot, be equipped with the draw-in groove on the trigger ejector pin, torsional spring one end card is held in the draw-in groove of trigger ejector pin, the other end is contradicted on the dog of trigger, make the trigger ejector pin produce certain torsion through the torsional spring like this, thereby the messenger that can be fine triggers the ejector pin and keeps operating condition, keep good trigger position state when trigger switch promptly in needs, can be fine again after trigger switch breaks away from, the reliability and the stability of trigger ejector pin work have been promoted, can not change because of other external forces.

4. The cam is provided with the convex block, so that when the cam moves to a high point, the lower end of the trigger ejector rod can be triggered through the convex block, the trigger ejector rod deflects to be separated from the trigger switch, the trigger switch is disconnected, and the triggering reliability of the trigger ejector rod by the cam is ensured.

5. The lower end of the trigger ejector rod is provided with the guide inclined plane which is convenient for the bump to touch, so that the reliability of the cam for touching the trigger ejector rod can be well ensured, namely the trigger ejector rod is easy to deflect, and the trigger switch can be well triggered or separated.

6. Set up the lug on the cam is close to one side of reduction gear, the auto-lock ejector pin is dodged to the lug of being convenient for like this, and the lug can not touch with the auto-lock ejector pin when the cam rotates promptly, guarantees to trigger the reliability of ejector pin action to set lug and cam to an organic whole structure, integrated into one piece shaping promptly, the production and processing of lug and cam of both having been convenient for, and integrative structural strength is good, and is durable, long service life.

7. The lower end of the self-locking ejector rod is provided with a matching part matched with the cam, the matching part is in a trapezoid shape with a small upper part and a large lower part, the matching contact area between the self-locking ejector rod and the cam is increased, the self-locking ejector rod is matched with the cam conveniently, and the matching is reliable so as to ensure the reliability of the action of the self-locking ejector rod.

8. The casing includes first casing and second casing, and the mutual lock of first casing and second casing forms the casing has both made things convenient for the structural design and the machine-shaping of casing like this, the inside spare part's of the casing assembly of being convenient for again, and the cooperation is compact between each spare part, has reduced the overall dimension of casing to reduce the overall dimension of nail rifle, fine promotion the portability of nail rifle.

9. Be equipped with the trigger elastic component that makes trigger automatic re-setting in the casing, but trigger automatic re-setting after pulling the trigger like this, with treat the nailing next time, and set trigger elastic component to the spring, the elastic force of spring is good, the restoration of assurance trigger that can be fine, and the spring is the standard component, can directly purchase, need not special design, processing manufacturing cost has been reduced, perhaps trigger elastic component is shell fragment or elastic block again, the realization that so also can be fine is to the restoration of trigger.

10. The nail gun also comprises an MCU and a change-over switch which can freely change over the single-shot or continuous-shot mode of the nail gun, and the change-over switch is electrically connected with the MCU, so that the nail gun can be freely changed over between single-shot or continuous-shot modes to realize different working requirements, and the working efficiency of the nail gun is improved.

Drawings

The invention is further described below with reference to the accompanying drawings:

fig. 1 is a schematic structural view of a nail gun according to the present invention.

Fig. 2 is a cross-sectional view of the nail gun of the present invention.

Fig. 3 is a partial structural schematic view of the nail gun of the invention.

Fig. 4 is another partial structure schematic diagram of the nail gun of the invention.

Fig. 5 is a schematic structural view of a mounting seat in the nail gun of the present invention.

Fig. 6 is a schematic view of the structure of the guide sleeve in the nail gun of the present invention.

Fig. 7 is a schematic structural view of a lock catch in the nail gun of the present invention.

FIG. 8 is another perspective view of the latch of the nail gun of the present invention.

Fig. 9 is a schematic view of the structure of the guide rail in the nail gun of the present invention.

FIG. 10 is a schematic view of the operation of the blank-proof ejector pin in the nailing gun of the present invention.

Fig. 11 is an enlarged view of a in fig. 10.

FIG. 12 is a schematic view of the operation of the prevention knock pin in the nail gun of the present invention.

Fig. 13 is an enlarged view of B in fig. 12.

FIG. 14 is a schematic view of a partial fitting structure between a nailing component and a nail feeding component of the nail gun of the present invention.

FIG. 15 is a schematic view of a portion of the nail feeding assembly of the nail gun of the present invention.

Fig. 16 is a schematic view of the top block of the nail gun of the present invention.

FIG. 17 is a cross-sectional view of a partial fit between the safety ram assembly and the staple feed assembly in the staple gun of the present invention.

FIG. 18 is a schematic view of the safety ram assembly of the nailer of the present invention.

FIG. 19 is a schematic view of the nail-discharging cover plate and the nail-discharging seat plate of the nail gun of the present invention after being disassembled.

FIG. 20 is a schematic view of the nail-ejecting cover plate and the nail-ejecting seat plate of the nail gun according to the present invention after locking.

Fig. 21 is a schematic view showing a structure of the nail gun according to the present invention after the movable rail is pulled out.

Fig. 22 is a schematic view showing a structure of the nail gun according to the present invention after the movable rail is pushed in.

Fig. 23 is a schematic structural view of a movable rail in the nail gun of the invention.

The names of the components marked in the figures are as follows:

100. a housing; 110. a first housing; 120. a second housing; 130. a handle position;

21. a trigger; 211. a rotating shaft; 212. a trigger spring; 22. a motor; 23. a trigger switch; 24. triggering the ejector rod; 241. hole rotation; 242. a card slot; 243. a guide slope; 25. a self-locking ejector rod; 251. a fitting portion; 26. a torsion spring; 27. a power switch; 28. a changeover switch;

31. a first cylinder; 32. a first piston; 33. a second cylinder; 34. a second piston; 341. a piston core; 3411. a bayonet; 342. a piston sleeve; 343. connecting sleeves;

41. a crank; 42. a connecting rod;

51. a speed reducer; 52. a drive shaft; 53. a cam; 531. a bump;

61. a fixed seat; 62. a striker; 63. a nail outlet seat plate; 631. a protruding portion; 632. locking the clamping groove; 633. a boss; 6331. a notch; 634. the seat plate is hinged with a boss; 6341. a hinged column; 64. nail discharging cover plates; 641. the cover plate is hinged with a boss; 642. a cover plate hinge hole; 65. a nail outlet;

71. a guide rail plate; 711. a hook; 72. a movable guide rail; 721. accommodating a tank; 73. feeding a nail block; 731. a pushing part; 74. a nail feeding elastic member; 741. a first spring; 742. a second spring; 75. an elastic member top block;

81. locking; 811. a limiting step; 812. an open slot; 813. pushing the inclined plane; 814. mounting holes; 82. a locking elastic piece;

9. unlocking the ejector rod;

10. a mounting seat; 101. mounting grooves; 102. a notch; 103. perforating; 104. an airflow aperture;

11. a guide rail; 111. a chute; 112. a port;

12. a guide sleeve; 121. an air vent; 122. opening the side; 123. an annular step; 124. a first seal ring;

131. a safety switch; 132. a cannula holder; 1321. an opening; 133. a movable inner tube; 134. a connecting rod; 1341. a connecting portion; 1342. a fixed part; 135. a safety ejector rod; 1351. a bending part; 1352. a vertical portion; 13521. parallel side plates; 13522. a guide groove; 1353. a support portion; 136. a touch frame; 1361. a movable portion; 1362. a touch part; 137. touching the elastic piece; 138. adjusting the nut;

141. the idle driving prevention ejector rod; 142. a pin shaft; 143. a top block; 1431. a body; 1432. a first pushing part; 1433. a second pushing portion; 144. a spacing pin; 145. preventing and controlling the torsion spring;

15. locking the pressing handle; 151. locking the elastic buckle; 152. a hinged lug; 1521. a hinge lug hole; 153. rotating the hole;

16. a pin shaft;

17. an active button; 171. a latch hook; 172. a button hinge hole; 173. a button elastic member;

18. a rear seat; 181. a mounting cavity; 182. the rear seat is hinged with a hole;

19. hinging a shaft;

200. provided is a battery pack.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings, and are used merely for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention.

As shown in fig. 1 to 23, the present invention provides a reliable nail gun, comprising a housing 100, a trigger 21, a motor 22, a first cylinder 31, a second cylinder 33, a crank 41, a connecting rod 42, a nailing assembly and a nail feeding assembly, wherein the housing 100 is a plastic housing which facilitates the processing and shaping of the housing and ensures the insulation of the nail gun to ensure the safety of the nail gun when in use, the second cylinder 33 is located in the first cylinder 31, the first cylinder 31 is provided with a first piston 32 therein, the second cylinder 33 is provided with a second piston 34 therein, the connecting rod 42 is in driving connection with the first piston 32, the motor 22 is in driving connection with the crank 41 through a driving mechanism and drives the first piston 32 to move axially in the first cylinder 31 through the connecting rod 42, the first piston 32 is provided with a sliding hole axially penetrating the first piston 32 on the side deviating from the center, i.e. the sliding hole is eccentrically arranged, the first piston 32 is sleeved outside the second cylinder 33 through the sliding hole and moves axially in the second cylinder 33, the second cylinder 33 is provided with a sliding hole, the first piston 32 is provided with a movable air channel 61, the striker assembly is provided with a striker 62, the striker assembly, the striker is provided with a spring guide rail 62, the striker 74, the striker 72 is provided with a movable air channel 62 for pushing and a movable air channel 71 for pushing and a movable air pressure for pushing and a nail feeding block 72 for pushing the nail feeding assembly, the nail gun, the nail feeding assembly, the nail gun, the nail feeding air channel 71 is provided with a nail feeding air channel 71 for pushing and a movable air pressure piece 71 for pushing and a nail feeding air channel 71 for pushing the nail feeding air pressure piece for pushing the nail feeding air pressure of the nail, the nail gun, the nail feeding air pressure piece for pushing the nail feeding air pressure of the nail gun, the nail feeding piston 34, the nail feeding piston 32, the elastic force of spring is good, guarantees fine driving force, and the spring is the standard component, and assembly use after can directly purchasing need not special design to set the spring to including first spring 741 and second spring 742, first spring 741 and second spring 742 interval setting from top to bottom have further promoted the driving force of sending nail elastic component, in order to guarantee to send the nail effect of sending of nail piece.

In the embodiment, the nail gun comprises a trigger switch 23, a trigger ejector rod 24 which can trigger the trigger switch 23 after the trigger 21 is buckled is arranged on the trigger 21, a transmission mechanism comprises a speed reducer 51, a transmission shaft 52 in transmission connection with the speed reducer 51 and a cam 53 sleeved on the transmission shaft 52, a self-locking ejector rod 25 is arranged between the cam 53 and the trigger switch 23, when the cam 53 moves to a high point, the self-locking ejector rod 25 is pushed to trigger the trigger switch 23 and enable the trigger ejector rod 24 to be separated from the trigger switch 23, when the cam 53 moves to a low point, the self-locking ejector rod 25 is separated from the trigger switch 23, namely the self-locking ejector rod props the trigger switch, the trigger switch is ensured not to be disconnected, so that the motor is ensured to continue to move, so that the nail gun is ensured to finish a cycle of action, and the motor is controlled to finish a cycle of action by a mechanical structure.

In order to ensure the reliability of the trigger switch, the rotating shaft 211 can be arranged on the trigger 21, the rotating hole 241 is arranged on the trigger ejector rod 24, and the trigger ejector rod 24 is sleeved on the rotating shaft 211 through the rotating hole 241 so that the trigger ejector rod 24 can move along with the trigger 21 and can trigger the trigger switch 23.

In order to better ensure the reliability and stability of the operation of the trigger ejector rod, the rotating shaft 211 can be sleeved with a torsion spring 26 which can make the trigger ejector rod 24 deflect, the trigger ejector rod 24 is provided with a clamping groove 242, one end of the torsion spring 26 is clamped in the clamping groove 242 of the trigger ejector rod 24, and the other end of the torsion spring is abutted to a stop block of the trigger 21, so that the trigger ejector rod generates a certain torsion force through the torsion spring, thereby the trigger ejector rod can be well kept in an operating state, namely, a good trigger position state is kept when the trigger switch needs to be triggered, and the trigger ejector rod can be well kept in a separation position state after the trigger switch needs to be separated, so that the reliability and stability of the operation of the trigger ejector rod are improved, and the change of the trigger ejector rod due to other external forces is avoided.

In order to ensure the reliability of the trigger of the cam pair trigger mandril, a convex block 531 can be arranged on the cam 53, so that when the cam moves to a high point, the lower end of the trigger mandril can be triggered through the convex block to enable the trigger mandril to deflect and separate from the trigger switch, the trigger switch is disconnected, and the reliability of the trigger of the cam pair trigger mandril is ensured; meanwhile, the lug 531 is arranged on one side, close to the speed reducer 51, of the cam 53, so that the lug is convenient to avoid the self-locking ejector rod, namely, the lug cannot touch the self-locking ejector rod when the cam rotates, the reliability of the action of the trigger ejector rod is ensured, the lug 531 and the cam 53 are arranged into an integrated structure, namely, the lug and the cam are integrally machined and formed, the production and the processing of the lug and the cam are convenient, and the integrated structure is good in strength, durable and long in service life.

In order to facilitate the matching of the trigger rod and the projection, a guide inclined surface 243 for facilitating the contact of the projection 531 can be arranged at the lower end of the trigger rod 24, so that the contact reliability of the cam on the trigger rod can be well ensured, namely, the trigger rod is easy to deflect, and the trigger switch can be well triggered or separated.

In order to facilitate the matching between the self-locking ejector rod and the cam, a matching part 251 matched with the cam 53 can be arranged at the lower end of the self-locking ejector rod 25, the matching part 251 is in a trapezoid shape with a small upper part and a large lower part, the matching contact area between the self-locking ejector rod and the cam is increased, the self-locking ejector rod and the cam are convenient to match, and the matching is reliable so as to ensure the reliability of the action of the self-locking ejector rod.

In order to facilitate the processing and manufacturing and improve the portability of the nail gun, the casing 100 can be arranged to include the first casing 110 and the second casing 120, and the first casing 110 and the second casing 120 are respectively provided with the handle positions 130, the first casing 110 and the second casing 120 are mutually buckled to form the casing 100, and the two handles are 130 buckled together to form the integral handle of the nail gun, so that the structural design and the processing forming of the casing are facilitated, the assembly of the components in the casing is facilitated, the components are compactly matched, the integral size of the casing is reduced, the integral size of the nail gun is reduced, the portability of the nail gun is well improved, the handle is provided for a user to hold during the use, the user operation is facilitated, and the operation efficiency is improved.

In order to facilitate the resetting of the trigger after being pulled, in order to be ready for the next pulling, the trigger elastic part 212 which enables the trigger 21 to reset automatically can be arranged in the casing 100, so that the trigger can reset automatically after the trigger is pulled, in order to treat the next nailing, and the trigger elastic part 212 is specifically set as a spring, because the elastic force of the spring is good, the resetting of the trigger can be well ensured, and the spring is a standard part, can be purchased directly, does not need special design, and reduces the processing and production cost.

In order to ensure the nailing effect of the nail gun, a locking assembly for locking the second piston 34 at a high point can be arranged at the upper end in the first cylinder 31, the unlocking ejector rod 9 is arranged on the first piston 32, the unlocking ejector rod 9 is fixed with the first piston 32 through a bolt, the first piston 32 moves upwards to drive the unlocking ejector rod 9 to move upwards, the unlocking ejector rod 9 pushes the locking assembly to be separated from the second piston 34, so that the second piston 34 is released, and the second piston 34 moves downwards under the air pressure to enable the striker 62 to strike the nail gun.

In order to ensure the nailing effect and nailing stability, the second piston 34 may be configured to include a piston core 341 and a piston sleeve 342 sleeved on the piston core 341, the upper end of the piston core 341 is provided with a bayonet 3411 matched with the locking assembly, and the locking and maintaining pressure on the second piston is completed by matching the bayonet on the piston core with the locking assembly, so as to facilitate the locking of the locking assembly on the second piston and the detachment of the locking assembly when the second piston is released, thereby ensuring the nailing effect and nailing stability; meanwhile, in order to facilitate the connection between the firing pin and the second piston, the nail gun is further provided with a connecting sleeve 343 connected with the piston core 341, the connecting sleeve 343 is inserted into an inner hole at the lower end of the piston 341 and is fixedly connected through a screw, and the firing pin 62 and the connecting sleeve 343 are fixedly connected through a bolt to form linkage with the second piston 34, so that the connection between the firing pin and the second piston is facilitated, the connection is reliable, and the firing pin is not easy to fall off.

In order to facilitate the installation of hasp subassembly and guarantee the nailing effect, the upper end that can be in first cylinder sets up mount pad 10, mount pad 10 is discoid and sets up with first piston 32's shape phase-match, be equipped with mounting groove 101 in the mount pad 10, the hasp subassembly is installed in mounting groove 101, the bottom of mount pad 10 is equipped with the breach 102 that supplies unblank ejector pin 9 to stretch into, unblank ejector pin 9 passes breach 102 and hasp subassembly cooperation action, through setting up mount pad and mounting groove, the installation of hasp subassembly of both being convenient for is fixed, be convenient for first piston motion extremely high point back again, the hasp subassembly is touched to the ejector pin of unblanking, in order to guarantee the release that the second piston can be fine, thereby guarantee that the nailing is not postponed, and is accurate, high efficiency.

The lock catch assembly comprises a lock catch 81 and a lock catch elastic part 82 for pushing the lock catch 81 to reset, a limit step 811 matched with the bayonet 3411 and an open slot 812 communicated with the notch 102 are arranged on the lock catch 81, a push inclined plane 813 matched with the unlocking ejector rod 9 is arranged on the inner side wall of the lower end of the open slot 812, the lock catch can reset to an original position again after being separated from the second piston through the lock catch elastic part, the second piston is locked by the lock catch again after being reset, preparation is made for next nailing action, the working continuity of the nail gun is ensured, the working efficiency of the nail gun is improved, meanwhile, when the lock catch locks the second piston, the elastic force of the lock catch elastic part can also well ensure the locking force of the lock catch on the second piston, namely the second piston cannot be easily separated, the second piston can be separated only under enough pressure and under the touch of the unlocking ejector rod, and the unlocking ejector rod can be touched through the arrangement of the open slot and the push inclined plane, so that the lock catch can be separated from the second piston accurately, the second piston is released, and nailing is realized; moreover, a mounting hole 814 is formed in the rear end of the latch 81, one end of the latch elastic member 82 is mounted in the mounting hole 814, the other end of the latch elastic member abuts against the inner wall of the mounting seat 10, and the latch elastic member is limited by the mounting hole, so that the radial direction of the latch elastic member is not deviated, and the reliability of the operation of the latch elastic member is ensured, namely the latch elastic member pushes the latch stably and reliably.

In order to facilitate the axial movement of the locking assembly, the guide rail 11 can be arranged in the mounting groove 101, the guide rail 11 is matched with the shape of the mounting groove 101, the guide rail 11 is provided with a sliding groove 111, the locking assembly is positioned in the sliding groove 111, the bottom wall of the guide rail 11 is provided with a through hole 112 communicated with the notch 102, so that the friction between the locking and locking elastic piece and the mounting groove can be reduced, and a good guiding effect can be well played on the movement of the locking and locking elastic piece to ensure the whole working reliability and stability of the locking assembly.

In order to ensure the stability and nailing effect of nailing, the upper end of the piston core 341 can be extended out of the top wall of the second cylinder 33, a guide sleeve 12 is arranged between the upper end of the piston core 341 and the top wall of the second cylinder 33, the guide sleeve 12 is provided with a hollow cavity, the hollow cavity of the guide sleeve 12 is communicated with the inner cavity of the second cylinder 33, the mounting seat 10 is provided with an airflow hole 104, the airflow hole 104 is communicated with the inner cavity of the first cylinder 31, the mounting seat 10 is provided with a through hole 103 for the guide sleeve 12 to penetrate out, the guide sleeve 12 is provided with an air guide hole 121 communicated with the airflow hole 104, the hollow cavity of the guide sleeve 12 is communicated with the air guide hole 121, the airflow hole 104, the air guide hole 121 and the hollow cavity of the guide sleeve form the airflow channel together to communicate the first cylinder 31 with the second cylinder 32, the upper end of the piston core 341 is movably inserted into the hollow cavity of the guide sleeve 12 along with the movement of the second piston 34, namely when the second piston 34 is at a high point, the piston core 341 is inserted into the hollow cavity of the guide sleeve 12 along with the second piston and abuts against the inner surface of the top wall of the second cylinder 31 through the piston sleeve 342 to close the lower end of the hollow cavity, so as to disconnect the first cylinder 31 and the second cylinder 33, when the second piston 34 is at a low point, the piston core 341 is separated from the hollow cavity of the guide sleeve 12 along with the second piston, the piston sleeve 342 is not abutted against the inner surface of the top wall of the second cylinder 31, so that the second cylinder 33 is communicated with the first cylinder 31, the upper end of the guide sleeve 12 penetrates through the top wall of the mounting seat 10 and the first cylinder 31, the outer periphery of the upper end of the guide sleeve 12 is provided with external threads and is fixed on the top wall of the first cylinder 31 through nuts, through the arrangement of the guide sleeve, the second cylinder and the mounting seat can be well fixed, the second cylinder and the first cylinder can be well communicated, so as to ensure that enough pressure is applied to the second piston, thereby ensuring the nailing stability and the nailing effect.

In order to facilitate the locking or separation between the locking assembly and the bayonet on the piston core, a side opening 122 for the locking assembly to pass through to cooperate with the bayonet 3411 may be formed in the upper end side wall of the guide sleeve 12, so that the locking assembly and the bayonet on the piston core can be conveniently locked or separated, and the connection is reliable, the stability is high, and the structural design is convenient.

In order to ensure that the impact force of the firing pin is enough, the lower end of the guide sleeve 12 can be provided with an annular step 123 matched with the inner surface of the top wall of the second cylinder 33, and a first sealing ring 124 is arranged between the annular step 123 and the inner surface of the top wall of the second cylinder 33, so that the sealing performance of the joint of the guide sleeve and the second cylinder is well enhanced, gas is ensured not to leak, the pressurizing force on the second piston is ensured to be enough, the impact force of the firing pin is ensured to be enough, and the nailing effect is ensured.

In order to improve the use safety of the nail gun, the nail gun can also comprise a safety ejector rod assembly arranged on one side of the fixed seat 61, the safety ejector rod assembly comprises a safety switch 131, a sleeve support 132 fixed on the fixed seat 61, a movable inner tube 133 movably arranged in the sleeve support 132, a connecting rod 134 connected with the movable inner tube 133 and a safety ejector rod 135 connected with the connecting rod 134, and the upper end of the movable inner tube 133 is provided with a touch frame 136 which triggers the safety switch 131 and moves along with the movable inner tube 133, so that the nail gun only presses the safety ejector rod when nailing to nail so as to electrify the safety switch, the trigger is triggered, the motor rotates to start nailing, namely the safety ejector rod is not pressed, the trigger cannot be triggered but the motor rotates, namely the nail gun cannot be electrified to work, and the use safety of the nail gun is well improved; meanwhile, the nailing depth is influenced by the distance between the nail outlet and the wood board, specifically, the closer the nail outlet is to the wood board, the deeper the depth of the nail driven into the wood board by the nail gun is, the farther the nail outlet is from the wood board, and the shallower the depth of the nail driven into the wood board by the nail gun is, by setting the safety ejector rod 135 to be capable of continuously moving along the axial direction of the movable inner tube 133, the axial distance between the bottom end of the safety ejector rod 135 and the nail outlet 65 can be adjusted, and the change of the axial distance is also the change of the distance between the nail outlet and the wood board, so that the axial distance between the bottom end of the safety ejector rod and the nail outlet is adjusted by adjusting the movable inner tube, that is, the distance between the nail outlet and the wood board is also adjusted, so that the nailing depth can be adjusted, the nailing effect can be ensured, the axial distance between the bottom end of the safety ejector rod and the nail outlet can be adjusted according to the thicknesses of different wood boards, the good nailing effect can be ensured, and the adaptability of the nail gun can be further improved, and the wood boards with different thicknesses can be nailed.

In order to guarantee the reliability and the stability of the nailing depth, the connecting rod 134 and the movable inner tube 133 can be connected through threads so that the connecting rod 134 can move along the axial direction of the movable inner tube 133, and the axial direction can be realized in a threaded manner, so that the nailing depth can be adjusted, the adjustment is convenient, the self-locking performance of the threads is good, the adjustment is not easy to change, and the reliability and the stability of the nailing depth can be guaranteed.

In order to facilitate the adjustment of the nailing depth, the safety ejector rod assembly further comprises an adjusting nut 138, the adjusting nut 138 is sleeved on the periphery of the movable inner tube 133, the adjusting nut 138 is rotated to enable the movable inner tube 133 and the connecting rod 134 to move axially, so that the axial distance between the bottom end of the safety ejector rod 135 and the nail outlet 65 is adjusted, the distance between the nail outlet and the wood board is further adjusted, the adjustment of the nailing depth is finally realized, the mode of rotating the adjusting nut greatly facilitates the operation of a user, the operation convenience of the nail gun is well improved, and the use feeling and the satisfaction degree of the user are improved.

In order to ensure the reliability of the safety ejector rod component for triggering the safety switch, the safety switch 131 may be disposed on one side of the sleeve support 132, an opening 1321 for the triggering support 136 to extend out is disposed on a side wall of the sleeve support 132, the triggering support 136 includes a movable portion 1361 and a triggering portion 1362, the movable portion 1361 is connected to the upper end of the movable inner tube 133, the triggering portion 1362 extends out of the opening 1321 and is matched with the safety switch 131, and the triggering support 136 axially moves in the sleeve support 132 along with the movable inner tube 133 to close or open the safety switch.

In order to facilitate the resetting of the trigger frame, a trigger elastic element 137 for resetting the trigger frame 136 may be disposed between the upper end of the movable portion 1361 and the top end of the sleeve bracket 132, so as to facilitate the resetting of the trigger frame, so as to ensure the continuity of the operation of the nail gun when the nail gun is used for the next nailing, thereby improving the operating efficiency of the nail gun.

Because the structural design requirement of nail rifle, the structure that can make some spare parts of nail rifle and the design in position receive certain limitation easily, through being "L" shape with the longitudinal section of connecting rod 134, the connecting distance between connecting rod and the insurance ejector pin has been prolonged like this, can make the design position of insurance ejector pin not receive the influence of other spare parts, the priority guarantees that the insurance ejector pin just can the linkage trigger safety switch under the normal in service behavior of nail rifle, the condition of nail rifle nailing can not take place for general maloperation, the safety in utilization of nail rifle has further been promoted, simultaneously still fine motion interference between each part of avoiding, in order to guarantee the stability of nail rifle work.

In order to facilitate the connection between the connecting rod and the safety ejector rod, the connecting rod 134 can be arranged to include a connecting portion 1341 matched with the movable inner tube 133 and a fixing portion 1342 connected with the safety ejector rod 135, the connecting portion 1341 is arranged to be rod-shaped, the connecting portion and the movable inner tube are convenient to match, especially, a threaded structure is adopted to enable the connecting rod and the movable inner tube to axially move, the fixing portion 1342 is arranged to be plate-shaped, the connection between the connecting rod and the safety ejector rod is convenient, the processing difficulty is reduced, and the connecting rod can be processed through a simple sheet metal stamping process.

In order to simplify the structure of the safety ejector rod and ensure the working reliability of the nail gun, the safety ejector rod 135 can be arranged to comprise a bending part 1351, a vertical part 1352 and a supporting part 1353 which are connected with a connecting rod 134, wherein the vertical part 1352 comprises two symmetrically arranged parallel side plates 13521, one of the parallel side plates 13521 is connected with the bending part 1351, and the supporting part 1353 is positioned at the lower ends of the two parallel side plates 13521 and connects the two parallel side plates 13521 into a whole; meanwhile, the safety ejector rod 135 is integrally arranged to be plate-shaped, so that the safety ejector rod is convenient to machine and form, the machining production efficiency is improved, the integral machining efficiency of the nail gun is further improved, the metal safety ejector rod is particularly adopted, the strength of the safety ejector rod is enough, and the durability and the service life are guaranteed.

In order to ensure that the safety ejector rod cannot deviate when the safety ejector rod is pressed, a guide groove 13522 can be formed between the two parallel side plates 13521, and the two parallel side plates 13521 are arranged on two sides of the extending part 631 of the nail outlet seat plate 63, so that the safety ejector rod cannot deviate when the safety ejector rod is pressed, the safety switch can be stably triggered by linkage of the safety ejector rod, and the working stability of the nail gun is ensured.

In order to ensure the use safety of the nail gun when no nail is available, the nail outlet seat plate 63 is provided with an idle driving prevention rod 141, the nail outlet seat plate 63 is further provided with a pin shaft 142 penetrating through the idle driving prevention rod 141, and an ejector block 143 is arranged between the idle driving prevention rod 141 and the nail feeding elastic piece 74, so that the nail feeding elastic piece 74 can push the ejector block 143 when no nail is available in the nail feeding assembly, the ejector block 143 further pushes the idle driving prevention rod 141 to limit the axial direction of the safety ejector rod 135, and the safety ejector rod 135 is prevented from triggering the safety switch 131, namely the nail gun cannot finish the nailing work, so as to ensure the use safety of the nail gun when no nail is available.

In order to ensure the working reliability and stability of the idle driving prevention ejector rod, the pin shaft 142 may be provided with an idle driving prevention torsion spring 145 for keeping the idle driving prevention ejector rod 141 at an action position, so that the idle driving prevention ejector rod can be well kept in an action state by the idle driving prevention torsion spring after action to prevent the idle driving prevention ejector rod from being reset to a state before action, thereby ensuring the working reliability and stability of the idle driving prevention ejector rod.

In order to ensure the stability of nail feeding, an accommodating groove 721 for installing the nail feeding elastic element 74 is arranged on the movable guide rail 72, the nail feeding elastic element 74 specifically comprises a first spring 741 and a second spring 742, correspondingly, the accommodating groove 721 is also provided with two parts and is arranged corresponding to the first spring 741 and the second spring 742, an elastic element ejecting block 75 is arranged at the front end of the nail feeding elastic element 74, the elastic element ejecting block 75 is positioned in the accommodating groove 721, the nail feeding elastic element is arranged in the accommodating groove, and the nail feeding elastic element is pressed in the accommodating cavity through the elastic element ejecting block so that the nail feeding elastic element always keeps a compression elastic force, the nail feeding elastic element can always press the nail feeding block which presses the nails to convey the nails, thus the pushing direction of the nail feeding elastic element can be well ensured not to deviate, and the stability of the nail feeding is ensured; meanwhile, when no gun nail exists, the nail feeding elastic piece 74 pushes and presses the ejector block 143 through the elastic piece ejector block 75 to enable the anti-idle driving ejector rod 141 to limit the axial direction of the safety ejector rod 135, so that the safety ejector rod 135 is prevented from stretching and contracting to trigger the safety switch 131, the elastic piece ejector block 75 is in matched contact with the ejector block 143, the matched contact area is large, the ejector block can be pushed and pressed better, the pushing force of the ejector block on the anti-idle driving ejector rod is enough, and the axial limit of the anti-idle driving ejector rod on the safety ejector rod is reliable.

In order to ensure the reliability and stability of the ejector block pushing anti-blank hitting rod, the ejector block 143 can be movably arranged at the front end of the accommodating groove 721 and located at the front end of the elastic piece ejector block 75, and a limiting pin 144 limiting the ejector block 143 is arranged at the front end of the accommodating groove 721, so that the ejector block can be well limited, the ejector block is prevented from being disengaged, and the reliability and stability of the ejector block pushing anti-blank hitting rod are ensured.

In order to guarantee the work effect of kicking block, can set the kicking block 143 to including body 1431 and locate body 1431 both ends and stagger the first promotion portion 1432 and the second promotion portion 1433 that set up, first promotion portion 1432 and the idle work roof rod 141 cooperation action, second promotion portion 1433 and the cooperation action of elastic component kicking block 75 for the cross-section of kicking block 143 is the notch cuttype, first promotion portion can not only work independently and mutual noninterference with the second promotion portion like this, can also be fine form spacing fixed to the kicking block.

In order to facilitate the structural and positional layout of the safety ejector rod and the safety switch, a trigger assembly can be arranged between the safety ejector rod 135 and the safety switch 131, the safety ejector rod 135 triggers the safety switch 131 through the trigger assembly, the trigger assembly includes a sleeve bracket 132 fixed on the fixing seat 61, a movable inner tube 133 movably arranged in the sleeve bracket 132, and a connecting rod 134 connected with the movable inner tube 133, the safety ejector rod 135 is connected with the connecting rod 134, and by arranging the trigger assembly, the trigger distance between the safety ejector rod and the safety switch is prolonged, so that the structural and positional layout of the safety ejector rod and the safety switch is facilitated, and the design limitation is smaller.

In order to facilitate the disassembly of the nail outlet seat plate and the nail outlet cover plate after the staple, the nail outlet cover plate 64 and the nail outlet seat plate 63 can be hinged, the nail outlet cover plate 64 is hinged with the locking pressing handle 15, the locking pressing handle 15 is provided with the locking elastic buckle 151, the nail outlet seat plate 63 is provided with the locking clamping groove 632 matched with the locking elastic buckle 151, the locking elastic buckle and the locking clamping groove can be locked after the locking pressing handle is closed, and meanwhile, the locking elastic buckle and the locking clamping groove can be separated after the locking pressing handle is opened, namely, when the staple appears, the locking pressing handle can be opened through passing, the nail outlet cover plate and the nail outlet seat plate can be quickly disassembled, so that the staple can be taken out, the disassembly operation convenience of the staple assembly is greatly improved, the disassembly time of a user is reduced, the use efficiency of the staple gun is improved, and the working efficiency of the user is also improved.

In order to facilitate the hinging arrangement between the locking pressing handle and the nail-out cover plate, a cover plate hinging boss 641 can be arranged on the nail-out cover plate 64, a cover plate hinging boss hole is arranged on the cover plate hinging boss 641, a hinging lug 152 positioned at two sides of the cover plate hinging boss 641 is arranged on the locking pressing handle 15, a hinging lug hole 1521 is arranged on the hinging lug 152, the nail gun further comprises a pin shaft 16, and the pin shaft penetrates through the hinging lug hole and the cover plate hinging boss hole to hinge the locking pressing handle and the nail-out cover plate together so as to realize the hinging between the locking pressing handle and the nail-out cover plate, so that the locking pressing handle can rotate around the nail-out cover plate to form the locking between the locking elastic buckle and the locking clamping groove; simultaneously, apron hinge joint boss 641 makes things convenient for machine-shaping between them with going out nail apron 64 integrated into one piece, and both are structure as an organic whole, and intensity is good, and is durable, long service life.

And, the both sides of locking pressing handle 15 all set up rotation hole 153 to insert the both ends of locking elastic buckle 151 in rotating hole 153 so that locking elastic buckle 151 can rotate around locking pressing handle 15, so that the cooperation between locking elastic buckle and the locking draw-in groove, be can be fine will go out the nail apron with go out the nail seat board together fixed, fixed reliable and difficult coming off, guarantee the reliability of nail rifle work.

In order to facilitate the processing and forming of the locking clamping groove, two bosses 633 can be arranged on the nail outlet seat plate 63, the two bosses 633 are arranged at intervals to form a spacing groove for avoiding the nail outlet cover plate 64, notches 6331 are arranged on the two bosses 633, and the locking clamping groove 632 is formed by the notches 6331, so that the nail outlet cover plate can be well limited, meanwhile, the locking clamping groove does not need to be arranged independently, the clamping groove is formed by the notches, the processing technology is reduced, the strength of the locking clamping groove can be well ensured, the locking reliability of the nail outlet cover plate is ensured, and the nail outlet cover plate is not easy to loosen; meanwhile, the two bosses 633 and the nail outlet seat plate 63 are integrally formed, so that the two bosses and the nail outlet seat plate are convenient to machine and form, and are of an integrated structure, good in strength, durable and long in service life.

In order to facilitate the hinging arrangement of the nail outlet seat plate and the nail outlet cover plate, a seat plate hinging boss 634 can be arranged at one end of the nail outlet seat plate 63, which is far away from the nail outlet 65, two sides of the seat plate hinging boss 634 are provided with hinging columns 6341, one end of the nail outlet cover plate 64, which is far away from the nail outlet 65, is provided with a cover plate hinging hole 642, and the cover plate hinging hole 642 is matched with the hinging columns 6341 to hinge the nail outlet cover plate 64 and the nail outlet seat plate 63 together, so that after the nail outlet cover plate is disassembled, the nail outlet cover plate is still connected with the nail outlet seat plate and cannot be completely removed, the nail outlet cover plate cannot be lost, and after a nail is taken out, the nail outlet cover plate is directly locked, and the normal nailing work of the nail gun can be realized, the nail gun is convenient to operate, the use efficiency of the nail gun is improved, and the work efficiency of a user is improved; simultaneously, articulated post 6341 and the articulated boss 634 of bedplate integrated into one piece, the articulated boss 634 of bedplate and nail seat board 63 integrated into one piece make things convenient for three's machine-shaping, and three structure as an organic whole, and intensity is good, and is durable, long service life.

In order to facilitate the processing and forming of the locking elastic buckle, the locking elastic buckle 151 can be formed by integrally bending a metal strip, so that the processing and forming of the locking elastic buckle are facilitated, and the locking elastic buckle is good in strength, durable and long in service life.

In order to improve the durability of the nail seat plate and the nail outlet cover plate, the nail outlet plate 63 can be arranged to be a metal nail outlet plate, the nail outlet cover plate 64 is arranged to be a metal nail outlet cover plate, the strength of the nail outlet plate and the strength of the nail outlet cover plate are well improved, and the durability of the nail outlet plate and the durability of the nail outlet cover plate are prolonged.

In order to ensure stable and reliable nail feeding, a movable button 17 can be arranged on the movable guide rail 72, a locking hook 171 is arranged on the movable button 17, a locking hook 711 matched with the locking hook 171 is arranged on the guide rail plate 71, the locking hook 171 can be separated from the locking hook 711 by pressing the movable button 17, after the nail is installed on the guide rail plate, the movable guide rail is buckled, and the movable guide rail and the guide rail plate are locked together through the matching of the locking hook and the locking hook, so that stable and reliable nail feeding is ensured.

In order to facilitate the pressing operation of the movable button, the rear seat 18 can be arranged at the rear end of the movable guide rail 72, the mounting cavity 181 is arranged on the rear seat 18, and the movable button 17 is hinged in the mounting cavity 181, so that the movable button is partially or completely hidden in the mounting cavity of the rear seat, the overall appearance of the nail gun is improved, and meanwhile, the movable button is convenient to press.

In order to facilitate the hinging between the movable button and the rear seat, a button hinge hole 172 can be arranged at the joint of the movable button 17 and the latch hook 171, the side wall of the installation cavity 181 is provided with a rear seat hinge hole 182, the hinge mechanism further comprises a hinge shaft 19, and the hinge shaft penetrates through the rear seat hinge hole and the button hinge hole to hinge the movable button and the rear seat together, so that the movable button can rotate around the hinge shaft, thereby realizing the locking or the separation between the latch hook and the latch hook, facilitating the operation of a user and improving the use convenience of the user.

In order to make when pressing movable button light more and lock more reliably, can still be equipped with the button elastic component 173 that is used for movable button 17 to reset at movable button 17's rear end, through setting up the button elastic component both be convenient for press when latch hook and pothook break away from, it is laborsaving and light to press, can guarantee the reliability of both locks when latch hook and pothook are locked again, it is difficult not hard up, and latch hook 171 and movable button 17 integrated into one piece, pothook 711 and guide rail plate 71 integrated into one piece, the intensity of latch hook and pothook has been promoted like this, the durability and the life of latch hook and pothook have been promoted.

For better operation convenience of the nail gun, the rear end of the casing 100 and the position close to the handle 130 are provided with the battery pack 200, the battery pack 200 is a lithium battery pack, and power is supplied to the whole nail gun through the battery pack 200, so that the nail gun completes nailing work, the nail gun does not need to be studded by a power line when in use, the nail gun can be used more conveniently, the nail gun can also be used for outdoor operation, and the use convenience of the nail gun is greatly improved.

In order to further improve the safety of the nail gun in use, the nail gun can be further provided with a power switch 27, the power switch 27 is a main loop switch, the power switch 27 is arranged above the trigger 21, the power switch 27 is communicated after the trigger 21 is triggered, so that the whole loop of the nail gun is communicated, the nail gun can normally work only after the power switch 27 is closed, and the use safety of the nail gun can be further ensured.

In order to further improve the use convenience of the nail gun, the nail gun can also be provided with an MCU and a change-over switch 28 which can freely change over the single-shot or continuous-shot mode of the nail gun, and the change-over switch 28 is electrically connected with the MCU, so that the nail gun can be freely changed over between the single-shot mode and the continuous-shot mode to realize different working requirements, thereby improving the working efficiency of the nail gun; specifically, when the switch 28 is switched to the continuous striking mode, the trigger 21 is not released, and the safety ejector rod 135 is not pressed to trigger the safety switch 131, so that continuous striking of the nail gun can be realized; when the switch 28 is switched to the single-shot mode, the trigger 21 is pulled and presses the safety post 135 to trigger the safety switch 131, so that a single nailing operation is performed, and even if the trigger is not pulled and presses the safety post 135 again, the nail gun only completes one nailing operation, and if a second nailing operation is required, the nail gun can perform the second nailing operation only by pulling the trigger 21 again.

In order to ensure the reliability of the triggering of each switch, the trigger switch 23, the power switch 27, the change-over switch 28 and the safety switch 131 can be all set to be microswitches, so that the matching and the structural design of the microswitches and the mechanical structure are facilitated, and the reliability of the triggering of the microswitches and the mechanical structure is high, thereby ensuring the reliability and the stability of each action.

It can be understood that the unlocking push rod can also be fixed on the first piston through screws or interference or clamping or riveting or pasting or injection molding or welding.

It can be understood that the trigger elastic piece can also be an elastic piece or an elastic block, so that the resetting of the trigger can also be well realized.

It can be understood that a hinged plate can be fixedly arranged at the upper end of the nail-outlet seat plate, the nail-outlet seat plate is hinged with the hinged plate, namely, the nail-outlet seat plate comprises a detachable hinged plate.

It can be understood that only the nail seat plate can be a metal nail seat plate; or, only the nail-out cover plate is a metal nail-out cover plate.

It can be understood that only the latch hook and the movable button may be integrally formed; or, only the hook and the guide rail plate are integrally formed.

It will be appreciated that the nail gun may also be powered by a power cord.

Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.

Claims

1. A nail gun with reliable work comprises a shell, a trigger, a motor, a first air cylinder, a second air cylinder, a crank, a connecting rod, a nailing component and a nail feeding component, wherein the second air cylinder is positioned in the first air cylinder, a first piston is arranged in the first air cylinder, a second piston is arranged in the second air cylinder, the connecting rod is in transmission connection with the first piston, the motor is in transmission connection with the crank through a transmission mechanism and drives the first piston to axially move in the first air cylinder through the connecting rod, a circulation air channel is arranged between the first air cylinder and the second air cylinder, the nail gun is characterized by comprising a trigger switch, a trigger ejector rod capable of triggering the trigger switch after the trigger is triggered is arranged on the trigger, the transmission mechanism comprises a speed reducer, a transmission shaft in transmission connection with the speed reducer and a cam sleeved on the transmission shaft, a self-locking ejector rod is arranged between the cam and the trigger switch, the cam pushes the self-locking ejector rod to trigger switch and enables the trigger ejector rod to be separated from the trigger switch when the cam moves to a high point, and the self-locking ejector rod is separated from the trigger switch when the cam moves to a low point;

the nailing component comprises a fixed seat, a firing pin, a nail outlet seat plate and a nail outlet cover plate, the lower end of the nailing component is provided with a nail outlet, and the firing pin is connected with the second piston;

the upper end in the first cylinder is provided with a lock catch assembly for locking the second piston at the highest point, the first piston is provided with an unlocking ejector rod, the unlocking ejector rod is fixed with the first piston through a bolt, the first piston moves upwards to drive the unlocking ejector rod to move upwards, the unlocking ejector rod pushes the lock catch assembly to be separated from the second piston, so that the second piston is released, and the second piston moves downwards under air pressure to enable the firing pin to strike the gun nail;

the second piston comprises a piston core and a piston sleeve sleeved on the piston core, and the upper end of the piston core is provided with a bayonet matched with the locking assembly;

the upper end in the first air cylinder is provided with an installation seat, an installation groove is formed in the installation seat, the lock catch assembly is arranged in the installation groove, the bottom of the installation seat is provided with a notch for the unlocking ejector rod to extend into, and the unlocking ejector rod penetrates through the notch to be matched with the lock catch assembly to act;

a guide sleeve is arranged between the upper end of the piston core and the top wall of the second cylinder, the guide sleeve is provided with a hollow cavity, the hollow cavity of the guide sleeve is communicated with the inner cavity of the second cylinder, an airflow hole is arranged on the mounting seat and is communicated with the inner cavity of the first cylinder, an air guide hole communicated with the airflow hole is arranged on the guide sleeve and is communicated with the hollow cavity of the guide sleeve, the airflow hole, the air guide hole and the hollow cavity of the guide sleeve form the circulating air passage together so as to communicate the first cylinder with the second cylinder,

the first piston moves to compress gas in the first cylinder and the flow path delivers the compressed gas flow to the second cylinder.

2. The nail gun as claimed in claim 1, wherein the trigger is provided with a rotating shaft, the trigger rod is provided with a rotating hole, and the trigger rod is sleeved on the rotating shaft through the rotating hole so as to enable the trigger rod to move along with the trigger and trigger the trigger switch.

3. The nail gun as claimed in claim 2, wherein the pivot is further sleeved with a torsion spring for deflecting the trigger rod, the trigger rod is provided with a slot, one end of the torsion spring is clamped in the slot of the trigger rod, and the other end of the torsion spring abuts against the stop of the trigger.

4. The nailer of claim 3, wherein the cam includes a tab thereon, the tab contacting the lower end of the trigger ram when the cam moves to the high point to deflect the trigger ram and disengage the trigger switch.

5. The nailer of claim 4, wherein the lower end of the trigger ram is provided with a guide ramp to facilitate actuation of the cam.

6. The nailer of claim 4, wherein the boss is located on a side of the cam adjacent the speed reducer, the boss being of unitary construction with the cam.

7. The nail gun of claim 1, wherein the self-locking ejector rod is provided at a lower end thereof with an engaging portion which engages with the cam, and the engaging portion has a trapezoidal shape with a small top and a large bottom.

8. The nailer of claim 1, wherein said housing includes a first housing and a second housing, the first and second housings being snap-fit to one another to form said housing.

9. The nailer of claim 1, wherein a trigger spring is provided in said housing for automatically resetting the trigger.

10. The nailer of claim 1, further comprising an MCU and a switch for freely switching between single shot and continuous shot modes of the nailer, the switch being electrically connected to the MCU.