Dustproof driving device for nail gun and nail gun

Abstract

This invention provides a dustproof driving device for a nail gun and a nail gun. The driving device includes: a nozzle assembly with a nail channel having a discharge port on the side of the outlet end and a rolling element disposed therein; a striking mechanism including a firing pin disposed in the nail channel; an energy storage mechanism providing power for the movement of the striking mechanism in the striking direction; and a transmission mechanism driving the striking mechanism to move in the opposite direction of the striking direction. When the firing pin, under the action of the energy storage mechanism, pushes the nail out from the outlet end, the firing pin drives the rolling element to move synchronously through the foremost toothed block, causing the rolling element to push out debris in the nail channel from the discharge port. When the outlet end of the nail channel is facing upwards and the firing pin moves to its limit in the opposite direction, the rolling element rolls to the rear end of the rolling element slide under the action of gravity, sealing the gap between the firing pin and the transmission mechanism, preventing debris from entering. This invention is suitable for special nailing postures such as nail guns with the muzzle facing upwards, and has a good dustproof effect.

Description

Technical Field

[0001] This invention relates to the field of nail guns, and more specifically to a dustproof driving device for a nail gun and a nail gun. Background Technology

[0002] A nail gun is a fastening tool, primarily used in construction. Currently, the most widely used type of nail gun is the electric nail gun, which uses a lithium battery. This type of nail gun uses a drive motor and a corresponding transmission structure to push a piston component. The piston component then compresses a force spring or compressed gas to store energy. When firing a nail, the force spring or air pressure drives the piston component to move, which in turn drives the firing pin mounted on the piston component to strike and eject the nail.

[0003] In existing nail guns, the driving device mainly includes a nozzle assembly, a striking mechanism, an energy storage mechanism, and a transmission mechanism. The nozzle assembly has a nail-firing channel. The striking mechanism mainly includes a firing pin disposed within the nail-firing channel, the firing pin having a toothed structure. The energy storage mechanism cooperates with the striking mechanism and provides power for the forward movement of the firing pin in the striking direction. The transmission mechanism is driven by a drive motor and cooperates with the toothed structure of the firing pin, providing power for the reverse movement of the firing pin in the striking direction. When the drive motor is turned on, it drives the transmission mechanism to rotate. The transmission mechanism, through cooperation with the toothed structure of the firing pin, drives the firing pin to move along the nail-firing channel in the opposite direction of the striking direction. During this movement, the energy storage mechanism stores energy. When a gap is formed between the transmission mechanism and the toothed structure of the firing pin, the firing pin, under the action of the energy storage mechanism, pushes the nail disposed within the nozzle along the striking direction, completing the nail-firing action.

[0004] This type of nail gun can cause problems when using certain nailing postures. For example, when firing with the muzzle pointing upwards, hard objects or debris such as dust, mud, or nail fragments can easily enter the nozzle assembly along with the firing pin. Eventually, these objects will follow the toothed structure of the firing pin into the transmission mechanism, causing damage to both the transmission mechanism and the toothed structure of the firing pin. Summary of the Invention

[0005] The present invention was made to solve the above-mentioned problems, and the purpose is to provide a dustproof driving device for a nail gun and a nail gun.

[0006] This invention provides a dustproof driving device for a nail gun, disposed within the nail gun for firing nails. It comprises: a nozzle assembly having a nail channel with a discharge port on its exit side and a rolling element disposed within the nail channel; a striking mechanism including a firing pin disposed within the nail channel, the firing pin being used to push the nail out of the exit end along the nail channel and, during the pushing of the nail, driving the rolling element to move synchronously, causing the rolling element to push out debris from the nail channel through the discharge port; an energy storage mechanism cooperating with the striking mechanism and providing power for the movement of the striking mechanism along the striking direction; and a transmission mechanism disposed on the drive motor of the nail gun, used to drive the striking mechanism to move in the opposite direction along the striking direction to trigger the energy storage mechanism to store energy.

[0007] The dustproof driving device for a nail gun provided by the present invention may also have the following features: the nozzle assembly includes a barrel and a nozzle, and an annular protrusion is provided inside the barrel near the exit end. The annular protrusion divides the interior of the barrel into a front nozzle mounting cavity and a rear firing pin mounting cavity in the axial direction. The firing pin mounting cavity is provided with a firing pin slide and a rolling element slide that extend axially and are arranged side by side. The firing pin slide corresponds to the center hole of the annular protrusion and a firing pin is disposed therein. The rolling element slide corresponds to the end face of the annular protrusion and a rolling element is disposed therein. The front end of the side wall of the rolling element slide is provided with a drain port leading to the outside. The nozzle is installed in the nozzle mounting cavity and has an internal channel that runs through the front and rear and corresponds to the center hole of the annular protrusion. The internal channel and the firing pin mounting cavity together form a nail-firing channel.

[0008] Furthermore, one side of the firing pin has several toothed blocks distributed axially and located in the rolling element slide, with adjacent toothed blocks forming toothed grooves that cooperate with the transmission mechanism, and the toothed block closest to the exit end cooperating with the rolling element stop.

[0009] When the exit end of the nail channel faces upward, and the striking mechanism moves to its limit in the opposite direction of the striking direction under the drive of the transmission mechanism, the rolling element rolls to the rear end of the rolling element slide under the action of gravity, and closes the gap between the firing pin and the transmission mechanism.

[0010] The dustproof driving device for a nail gun provided by the present invention may also have the following features: the nozzle assembly further includes a magazine connector, and the side wall of the firing pin slide is provided with a mounting groove for installing the magazine connector. A portion of the magazine connector is disposed in the mounting groove, and another portion is located outside the barrel and is used to connect the magazine. The magazine connector has a nail hole for the nail of the magazine to enter the firing pin slide.

[0011] The dustproof driving device for a nail gun provided by the present invention may also have the following features: the striking mechanism further includes a piston component connected to the rear end of the firing pin, the piston component being axially movable inside the energy storage mechanism; the energy storage mechanism is a single-acting cylinder that uses the firing pin as a piston rod, the piston component as a piston, and compressed gas as power.

[0012] The dustproof driving device for a nail gun provided by the present invention may also have the following features: the transmission component includes a transmission component and a limiting component, the transmission component is used to cooperate with the firing pin and drive the firing pin to move in the opposite direction along the striking direction, and the transmission component is provided with a limiting part that cooperates with the limiting component, the limiting component is used to cooperate with the transmission component to limit the movement of the firing pin.

[0013] Furthermore, the transmission component includes a rotating part and a mating part. The rotating part is driven by a drive motor to rotate. The mating part is set on the rotating part and has several toothed pins that mate with the firing pin. The mating part is used to drive the firing pin to move linearly along the striking direction. The limiting part is a ratchet coaxially arranged with the rotating part. The outer circumference of the ratchet has several ratchet teeth. The limiting component is a pawl that mates with the ratchet teeth and is used to engage between adjacent ratchet teeth.

[0014] Furthermore, the toothed pin includes at least one movable toothed pin, and the rotating part has a movable hole for the movable toothed pin to move. A spring is provided between the movable toothed pin and the rotating part, and the two ends of the spring act on the rotating part and the movable toothed pin respectively. The rotating part has a receiving cavity for installing the spring.

[0015] The present invention also provides a nail gun, specifically featuring at least the aforementioned dustproof driving device for a nail gun.

[0016] The role and effect of invention

[0017] According to the dustproof driving device for a nail gun and the nail gun of the present invention, the driving device for the nail gun includes a nozzle assembly, a striking mechanism, an energy storage mechanism, and a transmission mechanism. The nozzle assembly has a nail channel with a discharge port on the side of the outlet end and a rolling element disposed in the nail channel. The striking mechanism includes a firing pin disposed in the nail channel. When the firing pin pushes the nail out of the outlet end along the nail channel under the action of the energy storage mechanism, the firing pin drives the rolling element to move synchronously through the toothed block at the foremost end, so that the rolling element pushes the debris in the nail channel out of the discharge port. When the outlet end of the nail channel is facing upward and the firing pin moves to the limit in the reverse direction, the rolling element rolls to the rear end of the rolling element slide under the action of gravity and closes the gap between the firing pin and the transmission mechanism, preventing debris from entering the transmission mechanism. Therefore, the dustproof drive device of the nail gun and the nail gun itself can expel debris from the nail channel and prevent debris from entering the transmission mechanism during use, thus avoiding damage to the transmission mechanism and firing pin caused by debris. It is suitable for special nailing postures such as nail guns with the muzzle facing upwards and has a very good dustproof effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the nail gun in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the nail gun after part of the housing has been removed in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the drive device in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the drive device after the gun barrel is hidden in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the cooperation of the nozzle assembly, striking mechanism and transmission mechanism during pull-back in an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram showing the cooperation of the nozzle assembly, striking mechanism, and transmission mechanism during firing in an embodiment of the present invention.

[0024] Figure 7 This is an exploded view of the transmission mechanism in the drive device in an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the transmission component in an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram illustrating the cooperation between the striking mechanism and the transmission components in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 Nail gun; 10 Housing; 20 Magazine; 30 Drive mechanism; 31 Nozzle assembly; 311 Barrel; 3111 Annular protrusion; 3112 Firing pin slide; 3113 Rolling element slide; 3114 Mounting slot; 3115 Exhaust port; 312 Nozzle; 313 Rolling element; 314 Magazine connector; 32 Strike mechanism; 321 Firing pin; 3211 Tooth block; 3212 Tooth groove; 322 Piston assembly; 33 Energy storage mechanism; 331 Mounting bracket; 34 Transmission mechanism; 341 Transmission component; 3411 Rotating part; 34111 Movable hole; 3412 Toothed pin; 3412a Movable toothed pin; 3413 Spring; 342 Limiting component; 3421 Pawl; 343 Limiting part; 40 Control device. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this invention easier to understand, the following embodiments are described in detail with reference to the accompanying drawings.

[0030] Example

[0031] Figure 1 This is a structural diagram of the nail gun 100. Figure 2 This is a schematic diagram of the structure of the nail gun 100 after removing part of the casing 10.

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides a nail gun 100, including a housing 10, a magazine 20, a drive unit 30, and a control unit 40. The housing 10 houses and protects internal components such as the drive unit 30 and the control unit 40. The magazine 20 is connected to the nozzle assembly 31 of the drive unit 30 and stores nails. The drive unit 30 is located inside the housing 10, with its nozzle assembly 31 protruding from the housing 10. The drive unit 30 is used to fire nails. The control unit 40 controls the operation of the drive unit 30 and includes components such as a battery, control board, wiring, switches, and drive motor (not fully shown in the figures), all installed inside the housing 10.

[0033] Figure 3 This is a schematic diagram of the drive unit 30. Figure 4 This is a schematic diagram of the structure of the drive device 30 after concealing the gun barrel 311.

[0034] like Figure 3 and Figure 4As shown, the drive device 30 includes a nozzle assembly 31, a striking mechanism 32, an energy storage mechanism 33, and a transmission mechanism 34. The nozzle assembly 31 mainly includes a nail channel with a discharge port on its front end (i.e., the exit end) and a rolling element 313 disposed within the nail channel. The rolling element 313 is used to push debris from the nail channel out of the discharge port when the striking mechanism 32 fires, thus preventing dust accumulation. The striking mechanism 32 is in direct contact with the nail and is used to eject the nail from the nail channel. The striking mechanism 32 has a striking direction for ejecting the nail. The energy storage mechanism 33 provides power to the striking mechanism 32, driving the striking mechanism 32 to move forward along the striking direction, thereby ejecting the nail. The transmission mechanism 34 is driven by a drive motor from the control device 40, driving the striking mechanism 32 to move backward along the striking direction, thereby triggering the energy storage mechanism 33 to store energy. The specific details of each part are described below.

[0035] Figure 5 and Figure 6 These are schematic diagrams showing the coordination of the muzzle assembly 31, the striking mechanism 32, and the transmission mechanism 34 during pullback and firing.

[0036] like Figures 3 to 6 As shown, the muzzle assembly 31 includes a barrel 311, a muzzle 312, a rolling element 313, and a magazine connector 314.

[0037] The barrel 311 is mounted on a mounting bracket 331 located at the front end of the accumulator mechanism 33. The barrel 311 has an internal channel that runs through the front and rear. At the front end of this internal channel, there is an annular protrusion 3111 arranged circumferentially. The annular protrusion 3111 divides the internal channel of the barrel 311 into two parts along the axial direction: the front part is the muzzle mounting cavity, and the rear part is the firing pin mounting cavity. The firing pin mounting cavity has a firing pin slide 3112 and a rolling element slide 3113 that extend axially and are arranged side by side. The firing pin slide 3112 corresponds to the center hole of the annular protrusion 3111 and is used to mount the firing pin 321 of the striking mechanism 32. The side wall of the firing pin slide 3112 has a mounting groove 3114 for mounting the magazine connector 314. The rolling element slide 3113 corresponds to the end face of the annular protrusion 3111 and is used to mount the rolling element 313. The front end of the side wall of the rolling element slide 3113 has a drain port 3115 leading to the outside.

[0038] The nozzle 312 is installed in the nozzle mounting cavity of the barrel 311. The nozzle 312 has an internal channel that runs through the front and back. This internal channel corresponds to the center hole of the annular protrusion 3111 and together with the firing pin mounting cavity inside the barrel 311, forms the nail channel of the nozzle assembly 31.

[0039] The rolling element 313 is disposed in the rolling element track 3113 inside the barrel 311 and can roll along the rolling element track 3113. When the rolling element 313 rolls to the discharge port 3115 of the barrel 311, the rolling element 313 can block the discharge port 3115. The rolling element 313 can be a steel ball, a rubber ball, or a ball made of other materials. In this embodiment, the rolling element 313 is a steel ball.

[0040] A portion of the magazine connector 314 is snapped into the mounting groove 3114 of the barrel 311, and the other portion of the magazine connector 314 is located outside the barrel 311 and is used to connect the magazine 20. The magazine connector 314 has a nail channel that connects the firing pin slide 3112 and the magazine 20. The nail channel allows the nail of the magazine 20 to enter the firing pin slide 3112 and be fired out by the firing pin 321 of the striking mechanism 32.

[0041] The striking mechanism 32 includes a firing pin 321 and a piston assembly 322. The firing pin 321 is disposed within the nail channel of the nozzle assembly 31 and is slidable along the nail channel. The front end of the firing pin 321 pushes the nail and fires it out in the striking direction. The rear end of the firing pin 321 is inserted into the piston assembly 322. One side of the firing pin 321 has a plurality of tooth blocks 3211 distributed axially and located in the rolling element slide 3113. Adjacent tooth blocks 3211 form tooth grooves 3212 that cooperate with the transmission component 341 of the transmission mechanism 34. The foremost tooth block 3211 cooperates with the stop of the rolling element 313. The piston assembly 322 is axially movable inside the energy storage mechanism 33.

[0042] Figure 7 This is an exploded view of the transmission mechanism 34 in the drive unit 30. Figure 8 This is a structural schematic diagram of transmission component 341. Figure 9 This is a schematic diagram showing the interaction between the striking mechanism 32 and the transmission component 341.

[0043] like Figure 7 As shown, the transmission mechanism 34 mainly includes a transmission component 341 and a limiting component 342.

[0044] The transmission component 341 is used to cooperate with the impact pin 321 to form an anti-jamming assembly. The transmission component 341 can rotate under the drive of the drive motor, and during the rotation, it can drive the impact pin 321 to move in the opposite direction of the impact.

[0045] Specifically, such as Figure 7 and Figure 8As shown, the transmission component 341 includes a rotating part 3411 and a mating part. The rotating part 3411 is a disc-shaped structure with an "I"-shaped cross-section and a mounting hole in the center. The rotating part 3411 can be mounted onto the output shaft of the drive motor through this mounting hole, allowing it to rotate under the drive of the motor. The mating part consists of several toothed pins 3412 arranged on the rotating part 3411. Mounting holes for mounting the toothed pins 3412 are provided at the edge of the rotating part 3411. The toothed pins 3412 are used to embed into the toothed grooves 3212 of the firing pin 321 (e.g., ...). Figure 9 As shown, the transmission component 341 and the firing pin 321 can be connected by transmission. When the rotating part 3411 rotates under the drive of the drive motor, the toothed pin 3412 is embedded in the tooth groove 3212 of the firing pin 321, thereby driving the firing pin 321 to move in the opposite direction of the firing direction along the nail channel.

[0046] like Figure 8 As shown, at least one of the plurality of toothed pins 3412 is a movable toothed pin 3412a. One of the mounting holes on the rotating part 3411 is an elongated movable hole 34111 for the movable toothed pin 3412a to move. The other mounting holes have shapes adapted to the cylindrical toothed pins 3412. A spring 3413 is provided between the movable toothed pin 3412a and the rotating part 3411. The spring 3413 is disposed in a receiving cavity provided on the rotating part 3411. One end of the spring 3413 acts on the rotating part 3411, and the other end acts on the movable toothed pin 3412a.

[0047] There are n toothed pins 3412, each corresponding to a toothed groove 3212. The movable toothed pin 3412a is the first toothed pin 3412, which is used to embed into the toothed groove 3212 at the rear end of the firing pin 321. By making the first toothed pin 3412 movable, it can be ensured that the toothed groove 3212 at the rear end can be better embedded. If the movable toothed pin 3412a happens to touch the toothed block 3211 during triggering, since the movable toothed pin 3412a is made movable, it will first be pushed slightly within the movable hole 34111 by the reaction force of the toothed block 3211, and then embedded into the toothed groove 3212 at the rear end of the firing pin 321 under the action of the spring 3413. This allows the movable toothed pin 3412a and the toothed groove 3212 to cooperate normally, thus avoiding the situation of tooth jamming. When the toothed pin 3412 rotates continuously counterclockwise following the rotating part 3411, each toothed pin 3412 gradually embeds into the corresponding toothed groove 3212, thereby driving the firing pin 321 to move in the opposite direction of the firing pin channel.

[0048] n toothed pins 3412 are arranged at the edge of the rotating part 3411. In the circumferential direction, a first gap L1 is formed between the movable toothed pin 3412a and an adjacent toothed pin 3412. A second gap L2 with the same distance is formed between the movable toothed pin 3412a and another adjacent toothed pin 3412, and between all the remaining toothed pins 3412. The length of the first gap L1 is greater than the length of the second gap L2. When the rotating part 3411 moves to the position where the first gap L1 faces the firing pin 321, since there are no toothed pins 3412 between the first gaps L1, the rotating part 3411 and the firing pin 321 are in a toothless state. The firing pin 321 in this state can be triggered by the energy storage mechanism 33 to move in the striking direction, thereby firing the nail. In addition, there is the same distance between adjacent tooth grooves 3212, which corresponds to the second gap L2. That is, the lateral length between adjacent tooth grooves 3212 is almost equal to the arc length of the second gap L2, so that each tooth pin 3412 can correspond to each tooth groove 3212.

[0049] like Figure 7 As shown, the limiting component 342 is used to cooperate with the transmission component 341 to limit the movement of the firing pin 321. The transmission component 341 is provided with a limiting part 343 that cooperates with the limiting component 342.

[0050] Specifically, the limiting part 343 is a ratchet coaxially arranged with the rotating part 3411. Both the ratchet and the rotating part 3411 are mounted on the output shaft of the drive motor and rotate synchronously under the drive of the drive motor. The outer circumference of the ratchet has several ratchet teeth, and the limiting part 342 has a pawl 3421 that cooperates with the ratchet teeth to engage between adjacent ratchet teeth. The distance between adjacent ratchet teeth is smaller than the width of the tooth groove 3212, so that the pawl 3421 can engage more tightly and firmly with the ratchet teeth and is not easy to disengage. In actual implementation, the distance between adjacent ratchet teeth can also be set to be equal to the width of the tooth groove 3212, which can also achieve the same engagement effect, but the engagement tightness is slightly inferior. The limiting part 343 can also be a ratchet directly integrated on the rotating part 3411 (that is, the rotating part 3411 is made thicker, and the ratchet is directly provided on the outer periphery of the upper part of the rotating part 3411; this embodiment is not shown in the figure). This method can ensure that the limiting part 343 and the rotating part 3411 rotate synchronously, and can reduce the number of parts, but it has higher requirements for the processing technology of the rotating part 3411.

[0051] The energy storage mechanism 33 is essentially a single-acting cylinder with a striker 321 as the piston rod, a piston component 322 as the piston, and compressed gas as the power source. It is also equipped with an air intake channel and a pressure relief channel. For the specific working principle, please refer to the prior art, which will not be elaborated on here.

[0052] The working principle of this nail gun 100 is as follows: The drive motor of the control device 40 is turned on, driving the transmission component 341 to rotate. During the rotation, the rotating part 3411 gradually engages with the toothed groove 3212 of the firing pin 321, starting from the movable toothed pin 3412a. This causes the firing pin 321 and the piston component 322 to move in the opposite direction of the firing direction inside the energy storage mechanism 33. During the movement of the piston component 322, the air pressure in the cavity containing the gas inside the energy storage mechanism 33 increases and stores energy. When the rotating part 3411 continues to rotate until a toothed state is formed between it and the firing pin 321, the air pressure inside the energy storage mechanism 33 pushes the piston component 322 and the firing pin 321 out along the firing direction, allowing the firing pin 321 to fire the nail, thus completing the nail firing operation. During the rotation of the rotating part 3411, the ratchet also rotates along with the rotating part 3411. The pawl 3421 cooperates with the ratchet teeth on the outer periphery of the ratchet to prevent the ratchet from reversing, thereby effectively avoiding the accidental firing of the striking pin 21 during operation and enhancing safety.

[0053] In particular, when the nail gun nozzle is pointing upwards, such as in special nailing positions, Figure 5 As shown, when the rotating part 3411 drives the firing pin 321 to move to the rear end in the opposite direction of the firing direction, the rolling element 313 will roll along the rolling element slide 3113 inside the barrel 311 to point A under the action of gravity, and seal the gap between the firing pin 321 and the rotating part 3411. This prevents debris that has entered the nail channel from re-entering the rotating part 3411 and causing damage to the teeth 3211 of the rotating part 3411 and the firing pin 321. Figure 6 As shown, when the firing pin 321 fires the nail, the toothed block 3211 at the front end of the firing pin 321 will drive the rolling element 313 to roll along the rolling element slide 3113 inside the barrel 311. During the rolling process, the rolling element 313 can push out the debris from the discharge port 3115. When the rolling element 313 rolls to the position where it is blocked by the annular protrusion 3111, i.e., point B, the rolling element 313 can block the discharge port 3115 and prevent the debris from re-entering from the discharge port 3115.

[0054] The role and effect of the embodiments

[0055] According to the dustproof driving device and nail gun involved in this embodiment, the driving device for the nail gun includes a nozzle assembly, a striking mechanism, an energy storage mechanism, and a transmission mechanism. The nozzle assembly has a nail channel with a discharge port on the side of the outlet end and a rolling element disposed in the nail channel. The striking mechanism includes a firing pin disposed in the nail channel. When the firing pin pushes the nail out of the outlet end along the nail channel under the action of the energy storage mechanism, the firing pin drives the rolling element to move synchronously through the tooth block at the front end, so that the rolling element pushes the debris in the nail channel out of the discharge port. When the outlet end of the nail channel is facing upward and the firing pin moves to the limit in the reverse direction, the rolling element rolls to the rear end of the rolling element slide under the action of gravity and closes the gap between the firing pin and the transmission mechanism, preventing debris from entering the transmission mechanism. Therefore, the dustproof drive device of the nail gun and the nail gun itself can expel debris from the nail channel and prevent debris from entering the transmission mechanism during use, thus avoiding damage to the transmission mechanism and firing pin caused by debris. It is suitable for special nailing postures such as nail guns with the muzzle facing upwards and has a very good dustproof effect.

[0056] The above embodiments are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A dustproof driving device for a nail gun, provided in a nail gun, for shooting a nail, characterized in that, include: The nozzle assembly has a nail channel with a discharge port on the side of the outlet end and a rolling element disposed in the nail channel; The striking mechanism includes a firing pin disposed within the nail channel. The firing pin is used to push the nail out of the outlet end along the nail channel, and drives the rolling element to move synchronously during the process of pushing the nail, so that the rolling element pushes out the debris in the nail channel from the discharge port; An energy storage mechanism is used to cooperate with the striking mechanism and provide power for the movement of the striking mechanism along the striking direction; as well as A transmission mechanism, mounted on the drive motor of the nail gun, is used to drive the striking mechanism to move in the opposite direction of the striking direction, thereby triggering the energy storage mechanism to store energy.

2. The dustproof driving device for a nail gun according to claim 1, characterized in that: wherein The muzzle assembly includes a barrel and a muzzle. The barrel has an annular protrusion near the exit end, which axially divides the interior of the barrel into a front muzzle mounting cavity and a rear firing pin mounting cavity. The firing pin mounting cavity is provided with firing pin slides and rolling element slides that extend axially and are arranged side by side. The firing pin slide corresponds to the central hole of the annular protrusion and the firing pin is disposed therein. The rolling element slide corresponds to the end face of the annular protrusion and the rolling element is disposed therein. The front end of the side wall of the rolling element slide is provided with the drain port leading to the outside. The nozzle is installed in the nozzle mounting cavity. The nozzle has an internal channel that runs through the front and back and corresponds to the central hole of the annular protrusion. The internal channel and the firing pin mounting cavity together form the nail firing channel.

3. The dustproof driving device for a nail gun according to claim 2, characterized in that: wherein The firing pin has a plurality of toothed blocks distributed axially on one side and located in the rolling element slide. The adjacent tooth blocks form tooth grooves that cooperate with the transmission mechanism, and the tooth block closest to the outlet end cooperates with the rolling element stop.

4. The dustproof driving device for a nail gun according to claim 3, characterized in that: in, When the outlet end of the nail channel faces upward, and the striking mechanism moves to its limit in the opposite direction of the striking direction under the drive of the transmission mechanism, the rolling element rolls to the rear end of the rolling element slide under the action of gravity, and closes the gap between the firing pin and the transmission mechanism.

5. The dustproof driving device for a nail gun according to claim 2, characterized in that: wherein The muzzle assembly also includes a magazine connector. The side wall of the firing pin slide is provided with a mounting groove for installing the magazine connector. One part of the magazine connector is disposed in the mounting groove, and the other part is located outside the barrel and is used to connect the magazine. The magazine connector has a nail hole for the magazine nail to enter the firing pin slide.

6. The dustproof driving device for a nail gun according to claim 1, characterized in that: wherein, The striking mechanism also includes a piston component connected to the rear end of the firing pin. The piston component is axially movable inside the energy storage mechanism; The energy storage mechanism is a single-acting cylinder that uses the striker as the piston rod, the piston component as the piston, and compressed gas as the power source.

7. The dustproof driving device for a nail gun according to claim 1, characterized in that: wherein The transmission mechanism includes a transmission component and a limiting component. The transmission component is used to cooperate with the firing pin and drive the firing pin to move in the opposite direction of the striking direction. The transmission component is provided with a limiting part that cooperates with the limiting component. The limiting component is used in conjunction with the transmission component to restrict the movement of the firing pin.

8. The dustproof driving device for a nail gun according to claim 7, characterized in that: wherein, The transmission component includes a rotating part and a mating part. The rotating part is driven by the drive motor to rotate. The mating part is disposed on the rotating part and has several toothed pins that mate with the firing pin. The mating part is used to drive the firing pin to move linearly along the striking direction. The limiting part is a ratchet coaxially arranged with the rotating part, and the ratchet has a number of ratchet teeth on its outer periphery. The limiting component is a pawl that cooperates with the ratchet teeth and is used to engage between adjacent ratchet teeth.

9. The dustproof driving device for a nail gun according to claim 8, characterized in that: wherein The toothed pin includes at least one movable toothed pin. The rotating part has a movable hole for the movable toothed pin to move. A spring is provided between the movable toothed pin and the rotating part, with its two ends acting on the rotating part and the movable toothed pin, respectively. The rotating part has a receiving cavity for installing the spring.

10. A nail gun, characterized by, include: The dustproof driving device for a nail gun according to any one of claims 1 to 9.

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