A driving device for a dustproof nail gun with a spring piece and the nail gun

Abstract

This invention provides a dustproof driving device for a nail gun and a nail gun, wherein the driving device includes: a nozzle assembly having a nail channel and a spring assembly disposed therein; a striking mechanism including a firing pin disposed in the nail channel, the firing pin being used to push the nail along the nail channel in a striking direction, and retracting the spring assembly by compression during the pushing of the nail; an energy storage mechanism providing power for the movement of the striking mechanism in the striking direction; and a transmission mechanism for driving the striking mechanism to move in the opposite direction of the striking direction to trigger the energy storage mechanism to store energy; wherein the spring assembly is used to pop out when not compressed by the firing pin to prevent debris from entering the transmission mechanism. This invention, by using a spring assembly that pops out or retracts with the movement of the firing pin, can form a sealed space inside the nail channel, preventing debris from entering the transmission mechanism. It is suitable for special nail-driving 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 drive device for a dustproof 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 driving device for a dustproof nail gun with a spring-loaded blade and a nail gun.

[0006] This invention provides a spring-loaded dustproof driving device for a nail gun, disposed within the nail gun for firing nails. It comprises: a nozzle assembly having a nail channel and a spring assembly 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 along the nail channel in a striking direction, and retracting the spring assembly by compression during the nail pushing process; an energy storage mechanism cooperating with the striking mechanism and providing power for the movement of the striking mechanism in 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 of the striking direction to trigger the energy storage mechanism to store energy; wherein the spring assembly is used to eject when not subjected to the compression of the firing pin to prevent debris from entering the transmission mechanism.

[0007] The driving device for a dustproof nail gun provided by the present invention may also have the following features: the nozzle assembly includes a barrel, a nozzle, and a magazine connecting box. 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 front side wall of the firing pin mounting cavity is provided with a mounting groove for mounting the magazine connecting box. The nozzle is installed in the nozzle mounting cavity. The nozzle has an internal channel that runs through the front and rear and corresponds to the central hole of the annular protrusion. The internal channel and the firing pin mounting cavity together form a nail channel. A part of the magazine connecting box is disposed in the mounting groove, and another part is located outside the barrel and is used to connect the magazine. The magazine connecting box has a nail channel and a leaf spring mounting cavity that are separated. The nail channel allows the nail to enter the axial space of the corresponding annular protrusion central hole in the firing pin mounting cavity from the magazine. The leaf spring mounting cavity is connected to the axial space of the corresponding annular protrusion end face in the firing pin mounting cavity. A leaf spring assembly is disposed in the leaf spring mounting cavity.

[0008] The driving device for a dustproof nail gun provided by the present invention may also have the following features: the spring assembly includes a spring and a first spring. The spring is arranged axially along the firing pin mounting cavity, and in the axial direction, the front end of the spring extends to the position of the corresponding annular protrusion end face, and the rear end extends to the position of the corresponding transmission mechanism. The first spring provides a force to eject the spring from the spring mounting cavity into the firing pin mounting cavity. When the spring is not squeezed by the firing pin, it will be ejected from the spring mounting cavity into the axial space of the corresponding annular protrusion end face in the firing pin mounting cavity under the action of the first spring, and close the gap between the annular protrusion end face and the transmission mechanism in the axial space.

[0009] Furthermore, one side of the corresponding spring of the firing pin has several toothed blocks distributed along the axial direction. When the toothed blocks pass through the spring, they compress the spring and retract it into the spring mounting cavity. Toothed grooves that cooperate with the transmission mechanism are formed between adjacent toothed blocks.

[0010] The rear end of the spring is provided with an inclined surface for the firing pin to press, and the spring mounting cavity and the spring are provided with guide structures that guide and cooperate with each other.

[0011] The driving device for a dustproof 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 the piston rod, the piston component as the piston, and compressed gas as the power source.

[0012] The driving device for a dustproof 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 characterized by including at least the aforementioned leaf spring type dustproof driving device for a nail gun.

[0016] The role and effect of invention

[0017] According to the present invention, a dustproof driving device for a nail gun and a nail gun with a spring-loaded mechanism are provided. The driving device includes a nozzle assembly, a striking mechanism, an energy storage mechanism, and a transmission mechanism. The nozzle assembly has a nail channel and a spring-loaded assembly disposed within the nail channel. The striking mechanism includes a firing pin disposed within the nail channel. When the firing pin, under the action of the energy storage mechanism, pushes the nail along the nail channel to fire in the striking direction, the firing pin compresses and retracts the spring-loaded assembly. When not compressed by the firing pin, the spring-loaded assembly pops out to prevent debris from entering the transmission mechanism. Therefore, the dustproof driving device for a nail gun and the nail gun, when in use, form a sealed space inside the nail channel through the spring-loaded assembly that pops out or retracts with the movement of the firing pin, preventing debris from entering the transmission mechanism and avoiding damage to the transmission mechanism and firing pin caused by debris. This is suitable for special nailing postures such as nail guns with the muzzle facing upwards and has excellent dustproof effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the drive device for a nail gun with a spring-loaded dustproof mechanism in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the drive device for the dustproof nail gun in an embodiment of the present invention, after concealing the barrel and magazine connecting box cover.

[0020] Figure 3 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;

[0021] Figure 4 yes Figure 3 A schematic diagram of the structure behind the concealed magazine connector cover in the C-direction direction;

[0022] Figure 5 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.

[0023] Figure 6 yes Figure 5 Cross-sectional view of the point where the toothed block of the firing pin presses against the spring clip;

[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 Drive mechanism; 10 Mouthpiece assembly; 11 Barrel; 111 Annular protrusion; 112 Firing pin mounting cavity; 12 Mouthpiece; 13 Magazine connecting box; 131 Magazine connecting box body; 1311 Nail channel; 1312 Shrapnel mounting cavity; 1313 Guide protrusion; 132 Magazine connecting box cover; 14 Shrapnel; 141 Inclined surface; 142 Guide groove; 15 First spring; 20 Strike mechanism; 21 Firing pin; 211 Tooth block; 212 Tooth groove; 22 Piston assembly; 30 Energy storage mechanism; 31 Mounting bracket; 40 Transmission mechanism; 41 Transmission component; 411 Rotating part; 4111 Movable hole; 412 Toothed pin; 412a Movable toothed pin; 413 Second spring; 42 Limiting component; 421 Pawl; 43 Limiting part; 200 Magazine. 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 schematic diagram of the drive mechanism for a dust-proof nail gun with a spring-loaded blade. Figure 2 This is a schematic diagram of the structure of a nail gun with a dustproof, leaf spring type drive device that conceals the barrel 11 and the magazine connecting box cover 132.

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides a nail gun, including a drive unit 100 and a magazine 200. The drive unit 100 is used to fire nails. The magazine 200 is connected to the nozzle assembly 10 of the drive unit 100, and stores nails for supplying nails to the nozzle assembly 10.

[0033] The drive unit 100 includes a nozzle assembly 10, a striking mechanism 20, an energy storage mechanism 30, and a transmission mechanism 40. The nozzle assembly 10 mainly includes a nail channel and a spring assembly disposed within the nail channel. The spring assembly is used to eject when not compressed by the striking mechanism 20 to prevent debris from entering the transmission mechanism 40, thus serving a dustproof function. The striking mechanism 20 is in direct contact with the nail and is used to eject the nail supplied to the nail channel. The striking mechanism 20 has a striking direction for ejecting the nail. The energy storage mechanism 30 provides power to the striking mechanism 20, which can drive the striking mechanism 20 to move forward along the striking direction, thereby ejecting the nail. The transmission mechanism 40 is driven by a drive motor of the control unit 40, and is used to drive the striking mechanism 20 to move in the opposite direction along the striking direction, thereby triggering the energy storage mechanism 30 to store energy.

[0034] Figure 3This is a schematic diagram showing the interaction of the nozzle assembly 10, the striking mechanism 20, and the transmission mechanism 40 during pullback. Figure 4 yes Figure 3 A schematic diagram of the structure behind the concealed magazine connecting box cover 132 in the C-direction direction. Figure 5 This is a schematic diagram showing the coordination of the muzzle assembly 10, the striking mechanism 20, and the transmission mechanism 40 during firing. Figure 6 yes Figure 5 Cross-sectional view of the point where the toothed block of the firing pin presses against the spring clip 14.

[0035] The muzzle assembly 10 includes a barrel 11, a muzzle 12, a magazine connector 13, a spring clip 14, and a first spring 15. The spring clip 14 and the first spring 15 together form the spring clip assembly.

[0036] like Figure 1 and Figure 2 As shown, the barrel 11 is mounted on a mounting bracket 31 located at the front end of the energy storage mechanism 30. Figures 3 to 6 As shown, the barrel 11 has an internal channel that runs through the front and rear. At the front end of the internal channel, there is an annular protrusion 111 arranged circumferentially. The annular protrusion 111 divides the internal channel of the barrel 11 into two parts along the axial direction. The front part is a muzzle mounting cavity for mounting the muzzle 12, and the rear part is a firing pin mounting cavity 112 for mounting the firing pin 21 of the firing mechanism 20. The front side wall of the firing pin mounting cavity 112 is provided with a mounting groove for mounting the magazine connecting box 13.

[0037] The nozzle 12 is installed in the nozzle mounting cavity of the barrel 11. The nozzle 12 has an internal channel that runs through the front and back. This internal channel corresponds to the center hole of the annular protrusion 111 and together with the firing pin mounting cavity 112 of the barrel 11, forms the nail channel of the nozzle assembly 10.

[0038] A portion of the magazine connecting box 13 is snapped into the mounting groove of the barrel 11, while the other portion of the magazine connecting box 13 is located outside the barrel 11 and is used to connect the magazine 200. The magazine connecting box 13 has a separately configured nail channel 1311 and a shrapnel mounting cavity 1312. The nail channel 1311 connects the interior of the magazine 200 with the axial space of the center hole of the corresponding annular protrusion 111 in the firing pin mounting cavity 112, allowing the nail stored in the magazine 200 to enter the axial space of the center hole of the corresponding annular protrusion 111 in the firing pin mounting cavity 112 and be ejected by the firing pin 21 of the striking mechanism 20. The shrapnel mounting cavity 1312 connects with the axial space of the end face of the corresponding annular protrusion 111 in the firing pin mounting cavity 112, and is used to mount the shrapnel 14 and the first spring 15. In this embodiment, the magazine connecting box 13 consists of a magazine connecting box body 131 and a magazine connecting box cover 132. The magazine connecting box body 131 is provided with a nail hole 1311 and a spring mounting cavity 1312. The magazine connecting box cover 132 is provided corresponding to the spring mounting cavity 1312, so as to facilitate the opening of the spring mounting cavity 1312 for the installation, maintenance or replacement of the spring 14 and the first spring 15.

[0039] Both the spring clip 14 and the first spring 15 are installed within the spring clip mounting cavity 1312 of the magazine connecting box 13. The spring clip 14 is axially arranged along the firing pin mounting cavity 112, and axially, the front end of the spring clip 14 extends to the position corresponding to the end face of the annular protrusion 111, and the rear end extends to the position corresponding to the transmission component 41 of the transmission mechanism 40. The first spring 15 provides the force to eject the spring clip 14 from the spring clip mounting cavity 1312 into the firing pin mounting cavity 112. Figure 3 and Figure 4 As shown, when the transmission component 41 of the transmission mechanism 40 drives the striking pin 21 of the striking mechanism 20 to move to its limit in the opposite direction of the striking direction, the spring piece 14, which is not subjected to the downward pressure of the striking pin 21, will be ejected from the spring piece mounting cavity 1312 under the action of the first spring 15 into the axial space of the corresponding annular protrusion 111 end face in the striking pin mounting cavity 112, and will seal the gap between the annular protrusion 111 end face and the transmission component 41 in the axial space to prevent foreign objects from entering. Figure 5 and Figure 6 As shown, when the striking mechanism 20 fires, the spring piece 14 is compressed by the toothed block 211 of the passing firing pin 21 and retracts into the spring piece mounting cavity 1312. In this embodiment, to make it easier for the toothed block 211 of the firing pin 21 to compress the spring piece 14 and prevent jamming, the rear end of the spring piece 14 is provided with an inclined surface 141 to facilitate the downward pressing of the firing pin 21. Figure 2 To ensure more stable ejection and retraction of the spring 14, a guide protrusion 1313 is provided inside the spring mounting cavity 1312, and a guide groove 142 is provided on the spring 14 to guide and cooperate with the guide protrusion 1313. Figure 4.

[0040] The striking mechanism 20 includes a firing pin 21 and a piston assembly 22. The firing pin 21 is disposed within the nail channel of the nozzle assembly 10 and is slidable along the nail channel. The front end of the firing pin 21 is used to push the nail and fire it out along the striking direction. The rear end of the firing pin 21 is inserted into the piston assembly 22. One side of the firing pin 21 corresponding to the spring 14 has a plurality of toothed blocks 211 distributed axially. Adjacent toothed blocks 211 form toothed grooves 212 that cooperate with the transmission component 41 of the transmission mechanism 40. The toothed blocks 211 can press down on the spring 14 when passing through it, causing the spring 14 to retract into the spring mounting cavity 1312. The piston assembly 22 is axially movable inside the energy storage mechanism 30.

[0041] Figure 7 This is an exploded view of the transmission mechanism 40 in the drive unit 100. Figure 8 This is a structural schematic diagram of the transmission component 41. Figure 9 This is a schematic diagram showing the cooperation between the striking mechanism 20 and the transmission component 41.

[0042] like Figure 7 As shown, the transmission mechanism 40 mainly includes a transmission component 41 and a limiting component 42.

[0043] The transmission component 41 is used to cooperate with the impact pin 21 to form an anti-jamming assembly. The transmission component 41 can rotate under the drive of the drive motor, and during the rotation, it can drive the impact pin 21 to move in the opposite direction of the impact.

[0044] Specifically, such as Figure 7 and Figure 8 As shown, the transmission component 41 includes a rotating part 411 and a mating part. The rotating part 411 is a disc-shaped structure with an "I"-shaped cross-section and a mounting hole in the center. The rotating part 411 can be mounted onto the output shaft of the drive motor through this mounting hole, allowing the rotating part 411 to rotate under the drive of the drive motor. The mating part consists of several toothed pins 412 arranged on the rotating part 411. Mounting holes for mounting the toothed pins 412 are provided at the edge of the rotating part 411. The toothed pins 412 are used to embed into the tooth grooves 212 of the firing pin 21 (e.g., ...). Figure 9 As shown, the transmission component 41 and the firing pin 21 can be connected by transmission. When the rotating part 411 rotates under the drive of the drive motor, the toothed pin 412 is embedded in the tooth groove 212 of the firing pin 21, thereby driving the firing pin 21 to move in the opposite direction of the firing direction along the nail channel.

[0045] like Figure 8As shown, at least one of the plurality of toothed pins 412 is a movable toothed pin 412a. One of the mounting holes on the rotating part 411 is an elongated movable hole 4111 for the movable toothed pin 412a to move. The other mounting holes have shapes adapted to the cylindrical toothed pins 412. A second spring 413 is provided between the movable toothed pin 412a and the rotating part 411. The second spring 413 is disposed in a receiving cavity provided on the rotating part 411. One end of the second spring 413 acts on the rotating part 411, and the other end acts on the movable toothed pin 412a.

[0046] There are n toothed pins 412, each corresponding to a toothed groove 212. The movable toothed pin 412a is the first toothed pin 412, which is used to embed into the toothed groove 212 at the rear end of the firing pin 21. By making the first toothed pin 412 movable, it can be ensured that the toothed groove 212 at the rear end can be better embedded. If the movable toothed pin 412a happens to touch the toothed block 211 during triggering, since the movable toothed pin 412a is made movable, it will first be pushed slightly within the movable hole 4111 by the reaction force of the toothed block 211, and then embedded into the toothed groove 212 at the rear end of the firing pin 21 under the action of the second spring 413. This allows the movable toothed pin 412a and the toothed groove 212 to cooperate normally, thus avoiding the situation of tooth jamming. When the toothed pin 412 rotates continuously counterclockwise following the rotating part 411, each toothed pin 412 gradually embeds into the corresponding toothed groove 212, thereby driving the firing pin 21 to move in the opposite direction of the firing pin channel.

[0047] n toothed pins 412 are arranged at the edge of the rotating part 411. In the circumferential direction, a first gap L1 is formed between the movable toothed pin 412a and an adjacent toothed pin 412. A second gap L2 with the same distance is formed between the movable toothed pin 412a and another adjacent toothed pin 412, as well as between all the remaining toothed pins 412. The length of the first gap L1 is greater than the length of the second gap L2. When the rotating part 411 moves to the first gap L1 facing the firing pin 21, since no toothed pins 412 are provided between the first gaps L1, the rotating part 411 and the firing pin 21 are in an empty tooth state. The firing pin 21 in this state can be triggered by the energy storage mechanism 30 to move along the striking direction, thereby firing the nail. In addition, the adjacent toothed grooves 212 have the same distance, which corresponds to the second gap L2. That is, the lateral length between adjacent toothed grooves 212 is almost equal to the arc length of the second gap L2, so that each toothed pin 412 can correspond to each toothed groove 212.

[0048] like Figure 7As shown, the limiting component 42 is used to cooperate with the transmission component 41 to limit the movement of the firing pin 21. The transmission component 41 is provided with a limiting part 43 that cooperates with the limiting component 42.

[0049] Specifically, the limiting part 43 is a ratchet coaxially arranged with the rotating part 411. Both the ratchet and the rotating part 411 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 42 has a pawl 421 that cooperates with the ratchet teeth for engaging between adjacent ratchet teeth. The distance between adjacent ratchet teeth is smaller than the width of the tooth groove 212, so that the pawl 421 can engage more tightly and firmly with the ratchet teeth, making it less likely to come out. In actual implementation, the distance between adjacent ratchet teeth can also be set to be equal to the width of the tooth groove 212, which can also achieve the same engagement effect, but the engagement tightness is slightly inferior. The limiting part 43 can also be a ratchet that is directly integrated on the rotating part 411 (that is, the rotating part 411 is made thicker, and the ratchet is directly provided on the outer periphery of the upper part of the rotating part 411; this embodiment is not shown in the figure). This method can ensure that the limiting part 43 and the rotating part 411 rotate synchronously and reduce the number of parts, but it has higher requirements for the processing technology of the rotating part 411.

[0050] The energy storage mechanism 30 is essentially a single-acting cylinder with the striker 21 as the piston rod, the piston component 22 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.

[0051] The working principle of this nail gun: The drive motor of the control device is activated, causing the transmission component 41 to rotate. During rotation, the rotating part 411 gradually engages with the toothed groove 212 of the firing pin 21, starting from the movable toothed pin 412a. This causes the firing pin 21 and the piston component 22 to move in the opposite direction to the striking direction within the energy storage mechanism 30. When the transmission component 41 drives the firing pin 21 to move to its limit in the opposite direction of the striking direction, as... Figure 3 and Figure 4As shown, the spring 14, not pressed down by the firing pin 21, will be ejected from the spring mounting cavity 1312 under the action of the first spring 15 into the axial space of the corresponding annular protrusion 111 end face in the firing pin mounting cavity 112, and will seal the gap between the annular protrusion 111 end face and the transmission component 41 in this axial space to prevent foreign objects from entering. During the movement of the piston component 22 in the opposite direction of the striking direction, the gas pressure in the cavity of the energy storage mechanism 30 increases and stores energy. When the rotating part 411 continues to rotate until it forms a toothed state with the firing pin 21, the gas pressure inside the energy storage mechanism 30 pushes the piston component 22 and the firing pin 21 out along the striking direction, thereby allowing the firing pin 21 to fire the nail, completing the nail firing operation. When the firing pin 21 passes the spring 14, as... Figure 5 and Figure 6 As shown, the spring 14 is compressed by the toothed block 211 of the passing firing pin 21 and retracts into the spring mounting cavity 1312, without affecting the movement of the firing pin 21. During the rotation of the rotating part 411, the ratchet also rotates with the rotating part 411. The pawl 421 and the ratchet teeth on the outer periphery of the ratchet cooperate with each other to prevent the ratchet from reversing, thereby effectively avoiding the accidental firing of the firing pin 21 during operation and enhancing safety.

[0052] The role and effect of the embodiments

[0053] According to the dustproof nail gun drive device and nail gun of this embodiment, the nail gun drive device includes a nozzle assembly, a striking mechanism, an energy storage mechanism, and a transmission mechanism. The nozzle assembly has a nail channel and a spring assembly disposed within the nail channel. The striking mechanism includes a firing pin disposed within the nail channel. When the firing pin, under the action of the energy storage mechanism, pushes the nail along the nail channel to fire in the striking direction, the firing pin compresses and retracts the spring assembly. When not compressed by the firing pin, the spring assembly pops out to prevent debris from entering the transmission mechanism. Therefore, this dustproof nail gun drive device and nail gun, during use, can form a sealed space inside the nail channel through the spring assembly that pops out or retracts with the movement of the firing pin, preventing debris from entering the transmission mechanism and 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 good dustproof effect.

[0054] 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 driving device for a dustproof, spring-loaded nail gun, disposed inside the nail gun, for driving out nails, characterized in that, include: A nozzle assembly having a nail channel and a spring assembly disposed within the nail channel; The striking mechanism includes a firing pin disposed within the nail channel. The firing pin is used to push the nail along the nail channel to fire in the firing direction, and to retract the spring assembly by squeezing during the process of pushing the nail. An energy storage mechanism, used to cooperate with the striking mechanism and provide power for the movement of the striking mechanism along the striking direction; and A transmission mechanism is mounted on the drive motor of the nail gun and is used to drive the striking mechanism to move in the opposite direction of the striking direction, so as to trigger the energy storage mechanism to store energy. The spring assembly is used to pop out when not subjected to the squeezing action of the firing pin to prevent debris from entering the transmission mechanism.

2. The driving device for a dustproof nail gun according to claim 1, characterized in that: in, The muzzle assembly includes a barrel, a muzzle, and a magazine housing. 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 front side wall of the firing pin mounting cavity is provided with a mounting groove for mounting the magazine connecting box. The nozzle is installed within the nozzle mounting cavity. The nozzle has an internal channel that extends from front to back and corresponds to the central hole of the annular protrusion. This internal channel and the firing pin mounting cavity together form the nail firing channel. A portion of the magazine connecting box is disposed within the mounting slot, while another portion is located outside the barrel and used to connect the magazine. The magazine connecting box has separately arranged nail channels and shrapnel mounting cavities. The nail channel provides axial space for the nail to enter from the magazine into the corresponding annular protrusion center hole within the firing pin mounting cavity. The spring mounting cavity is connected to the axial space of the corresponding annular protruding end face in the firing pin mounting cavity, and the spring assembly is disposed in the spring mounting cavity.

3. The driving device for a dustproof nail gun with a spring-loaded blade as described in claim 2, characterized in that: in, The spring assembly includes a spring and a first spring. The spring is arranged axially along the firing pin mounting cavity, and in the axial direction, the front end of the spring extends to the position corresponding to the annular protrusion end face, and the rear end extends to the position corresponding to the transmission mechanism. The first spring provides the force to eject the spring from the spring mounting cavity into the firing pin mounting cavity. When not subjected to the squeezing action of the firing pin, the spring will be ejected from the spring mounting cavity into the axial space of the corresponding annular protrusion end face in the firing pin mounting cavity under the action of the first spring, and will close the gap between the annular protrusion end face and the transmission mechanism in the axial space.

4. The driving device for a dustproof nail gun with a spring-loaded blade as described in claim 3, characterized in that: in, The firing pin has a plurality of toothed blocks distributed along the axial direction on one side corresponding to the spring piece. As the toothed block passes the spring sheet, it compresses the spring sheet, causing it to retract into the spring sheet mounting cavity. A tooth groove is formed between adjacent tooth blocks to cooperate with the transmission mechanism.

5. The driving device for a dustproof nail gun with a spring-loaded blade as described in claim 3, characterized in that: in, The rear end of the spring is provided with an inclined surface for the firing pin to press against. The spring mounting cavity and the spring are provided with mutually guiding structures.

6. The driving device for a dustproof nail gun according to claim 1, characterized in that: in, 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 driving device for a dustproof nail gun with a spring-loaded blade as described in claim 1, characterized in that: in, 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 along the striking direction. 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.

8. The driving device for a dustproof nail gun according to claim 7, characterized in that: in, 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 driving device for a dustproof nail gun according to claim 8, characterized in that: in, 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 second 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 second spring.

10. A nail gun, characterized in that, include: The driving device for a nail gun with a leaf spring type dustproof as described in any one of claims 1 to 9.

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