CN220313257U - Dustproof driving device for nail gun and nail gun - Google Patents

Abstract

The utility model provides a driving device for a nail gun capable of preventing dust and a nail gun, wherein the driving device for the nail gun comprises: the gun nozzle assembly is provided with a nail shooting channel with a drain hole on the side surface of the outlet end and a rolling piece arranged in the nail shooting channel; a striking mechanism comprising a striker disposed within the staple ejection channel; the energy storage mechanism is used for providing power for the movement of the striking mechanism along the striking direction; and the transmission mechanism drives the striking mechanism to move along the reverse direction of the striking direction. When the firing pin pushes the gun nail to be driven out from the outlet end under the action of the energy storage mechanism, the firing pin drives the rolling element to synchronously move through the tooth block at the forefront end, so that the rolling element pushes sundries in the nail shooting channel out of the drain hole, and when the outlet end of the nail shooting channel faces upwards and the firing pin reversely moves to the limit, the rolling element rolls to the rear end of the rolling element slideway under the action of gravity, and a gap between the firing pin and the transmission mechanism is closed, so that sundries are prevented from entering. The utility model is suitable for special nailing postures such as upward muzzle of the nail gun, and has good dustproof effect.

Description

Dustproof driving device for nail gun and nail gun

Technical Field

The utility model relates to the field of nail guns, in particular to a driving device for a dustproof nail gun and the nail gun.

Background

The nail gun is a fastening tool and is used for building construction. At present, an electric nail gun widely used is an electric nail gun adopting a lithium battery, and the nail gun pushes a piston part through a driving motor and a corresponding transmission structure, so that the piston part compresses a force supply spring or compressed gas to store energy.

In the existing nail gun, the driving device mainly comprises a gun nozzle assembly, a striking mechanism, an energy storage mechanism and a transmission mechanism. The gun nozzle assembly is provided with a nail shooting channel, the striking mechanism mainly comprises a firing pin arranged in the nail shooting channel, the firing pin is provided with a tooth-shaped structure, the energy storage mechanism is used for being matched with the striking mechanism and providing power for forward movement of the firing pin along the striking direction, and the transmission mechanism is driven by the driving motor and is used for being matched with the tooth-shaped structure of the firing pin and providing power for reverse movement of the firing pin along the striking direction. When the driving motor is started, the driving motor drives the transmission mechanism to rotate, the transmission mechanism drives the firing pin to move along the opposite direction of the striking direction along the nail shooting channel by being matched with the tooth-shaped structure of the firing pin, in the moving process, the energy storage mechanism stores energy, and when empty teeth are formed between the transmission mechanism and the tooth-shaped structure of the firing pin, the firing pin pushes out a nail arranged in the gun nozzle along the striking direction under the action of the energy storage mechanism, so that the nailing action is completed.

When the nail gun is used for nailing in a special nailing posture, such as when a muzzle is upwards triggered, hard objects or sundries such as dust, sediment or steel nail fragments are easy to enter the gun nozzle assembly along with the firing pin, and finally, the hard objects or sundries enter the transmission mechanism along with the tooth-shaped structure of the firing pin, so that the transmission mechanism and the tooth-shaped structure of the firing pin are damaged.

Disclosure of Invention

The present utility model has been made to solve the above-described problems, and an object of the present utility model is to provide a driving device for a nail gun and a nail gun capable of preventing dust.

The utility model provides a driving device for a dust-proof nail gun, which is arranged in the nail gun and is used for driving out nails of the nail gun, and has the characteristics that: the gun nozzle assembly is provided with a nail shooting channel with a drain hole on the side surface of the outlet end and a rolling piece arranged in the nail shooting channel; the striking mechanism comprises a firing pin arranged in the nail shooting channel, the firing pin is used for pushing the nail gun to be struck out from the outlet end along the nail shooting channel, and the rolling piece is driven to synchronously move in the process of pushing the nail gun, so that the rolling piece pushes sundries in the nail shooting channel out from the drain hole; the energy storage mechanism is used for being matched with the striking mechanism and providing power for the striking mechanism to move along the striking direction; and the transmission mechanism is arranged on the driving motor of the nail gun and is used for driving the striking mechanism to move reversely along the striking direction so as to trigger the energy storage mechanism to store energy.

The driving device for a dust-proof nail gun according to the present utility model may further include: the gun nozzle assembly comprises a gun barrel and a gun nozzle, an annular bulge is arranged at the position, close to the outlet end, of the gun barrel, the annular bulge axially divides the inner part of the gun barrel into a gun nozzle installation cavity at the front part and a firing pin installation cavity at the rear part, a firing pin slideway and a rolling element slideway which are axially extended and arranged in parallel are arranged in the firing pin installation cavity, the firing pin slideway corresponds to a central hole of the annular bulge and is provided with a firing pin, the rolling element slideway corresponds to the end face of the annular bulge and is provided with a rolling element, the front end of the side wall of the rolling element slideway is provided with a drain hole communicated to the outside, the gun nozzle is arranged in the gun nozzle installation cavity, the gun nozzle is provided with an inner channel which is communicated back and forth and corresponds to the central hole of the annular bulge, and the inner channel and the firing pin installation cavity together form a firing pin channel.

Further, one side of the striker has a plurality of tooth blocks distributed in the axial direction and located in the rolling element slideway, tooth grooves matched with the transmission mechanism are formed between adjacent tooth blocks, and the tooth block closest to the outlet end is matched with the rolling element stop.

When the outlet end of the nail shooting channel faces upwards and the striking mechanism moves to the limit along the reverse direction of the striking direction under the drive of the transmission mechanism, the rolling piece rolls to the rear end of the rolling piece slideway under the action of gravity and closes the gap between the firing pin and the transmission mechanism.

The driving device for a dust-proof nail gun according to the present utility model may further include: the gun nozzle assembly further comprises a magazine connecting piece, the side wall of the firing pin slideway is provided with a mounting groove for mounting the magazine connecting piece, one part of the magazine connecting piece is arranged in the mounting groove, the other part of the magazine connecting piece is positioned outside the gun barrel and is used for connecting the magazine, and the magazine connecting piece is provided with a gun nail hole channel for a gun nail of the magazine to enter the firing pin slideway.

The driving device for a dust-proof nail gun according to the present utility model may further include: the striking mechanism further comprises a piston component connected to the rear end of the firing pin, and the piston component is axially movably arranged in the energy storage mechanism; the energy storage mechanism is a single-acting cylinder which adopts a firing pin as a piston rod, a piston component as a piston and compressed gas as power.

The driving device for a dust-proof nail gun according to the present utility model may further include: the driving part comprises a driving part and a limiting part, the driving part is used for being matched with the firing pin and driving the firing pin to reversely move along the striking direction, the driving part is provided with a limiting part matched with the limiting part, and the limiting part is used for being matched with the driving part to limit the movement of the firing pin.

Further, the transmission part comprises a rotating part and a matching part, the rotating part is driven by the driving motor to rotate, the matching part is arranged on the rotating part and provided with a plurality of toothed pins matched with the firing pin, and the matching part is used for driving the firing pin to do linear motion along the striking direction; the limiting part is a ratchet wheel coaxially arranged with the rotating part, and the periphery of the ratchet wheel is provided with a plurality of ratchet teeth; the limiting component is a pawl matched with the ratchet teeth and is used for being embedded between the adjacent ratchet teeth.

Further, the tooth pin comprises at least one movable tooth pin, a movable hole for the movable tooth pin to move is formed in the rotating part, a spring is arranged between the movable tooth pin and the rotating part, two ends of the spring respectively act on the rotating part and the movable tooth pin, and a containing cavity for installing the spring is formed in the rotating part.

The utility model also provides a nail gun, which is characterized by at least comprising the driving device for the dust-proof nail gun.

Effects and effects of the utility model

According to the driving device for the dust-proof nail gun and the nail gun, the driving device for the nail gun comprises the gun nozzle assembly, the striking mechanism, the energy storage mechanism and the transmission mechanism, wherein the gun nozzle assembly is provided with the nail shooting channel with the drain hole on the side face of the outlet end and the rolling piece arranged in the nail shooting channel, the striking mechanism comprises the firing pin arranged in the nail shooting channel, when the firing pin pushes the nail of the gun to be driven out of the outlet end along the nail shooting channel under the action of the energy storage mechanism, the firing pin drives the rolling piece to synchronously move through the tooth block at the forefront end, so that the rolling piece pushes sundries in the nail shooting channel out of the drain hole, and when the outlet end of the nail shooting channel faces upwards and the firing pin reversely moves to the limit, the rolling piece rolls to the rear end of the rolling piece slideway under the action of gravity and closes a gap between the firing pin and the transmission mechanism, and sundries are prevented from entering the transmission mechanism. Therefore, the driving device for the dust-proof nail gun and the nail gun can discharge sundries in the nail shooting channel and prevent the sundries from entering the transmission mechanism when in use, so that the damage of the transmission mechanism and the firing pin caused by the sundries is avoided, the driving device is suitable for special nailing postures such as upward muzzle of the nail gun, and the dust-proof nail gun has a good dust-proof effect.

Drawings

FIG. 1 is a schematic view of a nail gun in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic view of the nail gun of the present utility model with a portion of the housing removed;

FIG. 3 is a schematic diagram of a driving apparatus according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the structure of the drive device with the barrel hidden in an embodiment of the utility model;

FIG. 5 is a schematic illustration of the engagement of the gun nozzle assembly, striking mechanism and transmission mechanism during pull-back in an embodiment of the utility model;

FIG. 6 is a schematic illustration of the mating of the gun nozzle assembly, the striking mechanism and the transmission mechanism upon firing in an embodiment of the utility model;

FIG. 7 is an exploded view of a transmission mechanism in a drive device in accordance with an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of the transmission member in an embodiment of the utility model;

FIG. 9 is a schematic illustration of the cooperation of the striking mechanism and the transmission component in an embodiment of the utility model.

Reference numerals illustrate:

100 nail gun; 10, a shell; 20 magazine; 30 driving means; 31 gun nozzle assembly; 311 barrels; 3111 annular projections; 3112 striker runners; 3113 rolling element runners; 3114 mounting slots; 3115 a drain port; 312 gun nozzles; 313 rolling elements; 314 magazine attachment; 32 a striking mechanism; 321 striker; 3211 tooth block; 3212 tooth slots; 322 piston member; 33 energy storage mechanism; 331 mounting frame; 34 a transmission mechanism; 341 a transmission member; 3411 rotating part; 34111 active aperture; 3412 tooth pins; 3412a movable tooth pins; 3413 spring; 342 a limiting member; 3421 pawl; 343 a limit portion; 40 control means.

Detailed Description

In order to make the technical means, the creation features, the achievement of the purpose and the effect of the present utility model easy to understand, the present utility model is specifically described below with reference to the accompanying drawings.

Examples

Fig. 1 is a schematic view of a nail gun 100, and fig. 2 is a schematic view of the nail gun 100 with a portion of a casing 10 removed.

As shown in fig. 1 and 2, the present embodiment provides a nail gun 100, which includes a casing 10, a magazine 20, a driving device 30, and a control device 40. The casing 10 can accommodate and protect the internal components such as the driving device 30 and the control device 40. The magazine 20 is connected to a gun nozzle assembly 31 of the driving device 30, and nails are stored in the magazine 20. The driving device 30 is disposed inside the casing 10, the gun nozzle assembly 31 of the driving device 30 is exposed out of the casing 10, and the driving device 30 is used for driving out gun nails. The control device 40 controls the operation of the driving device 30, including the battery, the control board, the circuit, the switch, the driving motor, etc. (not shown in the drawings), are all installed inside the cabinet 10.

Fig. 3 is a schematic structural view of the driving device 30, and fig. 4 is a schematic structural view of the driving device 30 with the barrel 311 hidden.

As shown in fig. 3 and 4, the driving device 30 includes a gun nozzle assembly 31, a striking mechanism 32, an energy storage mechanism 33, and a transmission mechanism 34. The gun nozzle assembly 31 mainly comprises a nail shooting channel with a drain hole on the side surface of the front end (namely, the outlet end) and a rolling piece 313 arranged in the nail shooting channel, wherein the rolling piece 313 is used for pushing sundries in the nail shooting channel out of the drain hole when the striking mechanism 32 fires, so that a dustproof effect is achieved. The striking mechanism 32 is in direct contact with the gun nail and is used to blow the gun nail in the nail emission path, and the striking mechanism 32 has a striking direction in which the gun nail is driven. The energy storage mechanism 33 is used for providing power for the striking mechanism 32, and the energy storage mechanism 33 can drive the striking mechanism 32 to move forward along the striking direction, so that the gun nails are struck. The transmission mechanism 34 is driven by a driving motor of the control device 40 and is used for driving the striking mechanism 32 to reversely move along the striking direction, so as to trigger the energy storage mechanism 33 to store energy. The following describes the respective parts in detail.

Fig. 5 and 6 are schematic illustrations of the cooperation of the gun nozzle assembly 31, the striking mechanism 32, and the transmission mechanism 34, respectively, in the pull-back and firing.

As shown in fig. 3-6, the gun nozzle assembly 31 includes a barrel 311, a gun nozzle 312, a rolling member 313, and a magazine attachment 314.

The barrel 311 is mounted on a mounting bracket 331 provided at the front end of the energy storage mechanism 33. The barrel 311 has a front-rear through internal passage, the front end of which is provided with an annular protrusion 3111 arranged along the circumferential direction, the annular protrusion 3111 divides the internal passage of the barrel 311 into front and rear parts along the axial direction, the front part is a gun nozzle mounting cavity, and the rear part is a firing pin mounting cavity. Wherein, the striker mounting chamber is provided therein with a striker slide 3112 and a rolling piece slide 3113 extending in the axial direction and arranged side by side, the striker slide 3112 corresponds to a center hole of the annular protrusion 3111 and is used for setting the striker 321 of the striking mechanism 32, a mounting groove 3114 for mounting the magazine connector 314 is provided on a side wall of the striker slide 3112, the rolling piece slide 3113 corresponds to an end face of the annular protrusion 3111 and is used for setting the rolling piece 313, and a side wall front end of the rolling piece slide 3113 is provided with a drain port 3115 leading to the outside.

The gun nozzle 312 is mounted in a gun nozzle mounting cavity of the gun barrel 311, and the gun nozzle 312 has an inner passage penetrating forward and backward, corresponding to the center hole of the annular protrusion 3111, and constitutes a nail shooting passage of the gun nozzle assembly 31 together with a hammer mounting cavity inside the gun barrel 311.

The rolling member 313 is disposed in a rolling member slide 3113 inside the barrel 311 and is rollably along the rolling member slide 3113. When the rolling member 313 rolls to the discharge port 3115 of the barrel 311, the rolling member 313 can block the discharge port 3115. The rolling member 313 may be a steel ball, a rubber ball or a ball made of other materials, and in this embodiment, the rolling member 313 is a steel ball.

A portion of the magazine coupler 314 is snap-fit into the mounting slot 3114 of the barrel 311, and another portion of the magazine coupler 314 is located outside the barrel 311 for coupling to the magazine 20. The magazine coupler 314 has a magazine bore communicating the firing pin slide 3112 with the magazine 20, the magazine bore providing for the magazine 20 to be driven into the firing pin slide 3112 by the firing pin 321 of the striking mechanism 32.

The striking mechanism 32 includes a striker 321 and a piston member 322. The firing pin 321 is disposed in the nail shooting channel of the gun nozzle assembly 31 and is slidable along the nail shooting channel, the front end of the firing pin 321 is used for pushing the gun nail and driving the gun nail out along the striking direction, the rear end of the firing pin 321 is inserted on the piston component 322, one side of the firing pin 321 is provided with a plurality of tooth blocks 3211 distributed along the axial direction and positioned in the rolling piece slide 3113, tooth grooves 3212 matched with the transmission component 341 of the transmission mechanism 34 are formed between adjacent tooth blocks 3211, and the tooth block 3211 positioned at the forefront end is matched with the rolling piece 313 in a stop mode. The piston member 322 is axially movably disposed inside the accumulator mechanism 33.

Fig. 7 is an exploded view of the transmission mechanism 34 in the driving device 30, fig. 8 is a structural view of the transmission member 341, and fig. 9 is a mating view of the striking mechanism 32 and the transmission member 341.

As shown in fig. 7, the transmission mechanism 34 mainly includes a transmission member 341 and a stopper member 342.

The transmission part 341 is used for forming an anti-latch assembly in cooperation with the firing pin 321, and the transmission part 341 can rotate under the driving of the driving motor and can drive the firing pin 321 to reversely move along the striking direction in the rotating process.

Specifically, as shown in fig. 7 and 8, the transmission member 341 includes a rotating portion 3411 and a mating portion. The rotating part 3411 has a disc-shaped structure with an I-shaped section, and a mounting hole is formed in the middle of the rotating part 3411, and the rotating part 3411 can be mounted on an output shaft of the driving motor through the mounting hole, so that the rotating part 3411 rotates under the driving of the driving motor. The matching part is a plurality of toothed pins 3412 arranged on the rotating part 3411, the edge of the rotating part 3411 is provided with mounting holes for mounting the toothed pins 3412, the toothed pins 3412 are used for being embedded into tooth grooves 3212 of the firing pin 321 (as shown in fig. 9), so that transmission matching between the transmission part 341 and the firing pin 321 can be realized, namely, when the rotating part 3411 is driven by a driving motor to rotate, the toothed pins 3412 are embedded into the tooth grooves 3212 of the firing pin 321, and the firing pin 321 is driven to move along a nail shooting channel in the opposite direction of the striking direction.

As shown in fig. 8, at least one of the plurality of tooth pins 3412 is a movable tooth pin 3412a, one of the mounting holes formed in the rotating portion 3411 is an oblong movable hole 34111 for the movable tooth pin 3412a to move, and the other mounting holes have a shape adapted to the cylindrical tooth pin 3412. A spring 3413 is provided between the movable tooth pin 3412a and the rotating portion 3411, the spring 3413 being disposed in a receiving chamber formed in the rotating portion 3411, one end of the spring 3413 acting on the rotating portion 3411 and the other end acting on the movable tooth pin 3412 a.

The number of the tooth pins 3412 is n, each tooth pin 3412 corresponds to one tooth groove 3212, the movable tooth pin 3412a is used as the first tooth pin 3412 which is used for being embedded in the tooth groove 3212 at the rearmost end of the firing pin 321, and the first tooth pin 3412 is movably arranged, so that the rearmost tooth groove 3212 can be better embedded. If the movable tooth pin 3412a just touches the tooth block 3211 during triggering, the movable tooth pin 3412a is movably arranged, so that the movable tooth pin 3412a is pushed to slightly move in the movable hole 34111 under the reaction force of the tooth block 3211, and then is embedded into the last tooth slot 3212 of the firing pin 321 under the action of the spring 3413, so that the movable tooth pin 3412a and the tooth slot 3212 can be matched normally, and the situation of tooth blocking is avoided. When the tooth pins 3412 rotate in the counterclockwise direction continuously along the rotating portion 3411, each tooth pin 3412 is gradually embedded into the corresponding tooth slot 3212, so that the striker 321 can be driven to move in the direction opposite to the striking direction along the nail shooting path.

n tooth pins 3412 are arranged at the edge of the rotating portion 3411, a first gap L1 is formed between the movable tooth pin 3412a and the adjacent one of the tooth pins 3412 in the circumferential direction, a second gap L2 is formed between the movable tooth pin 3412a and the adjacent other tooth pin 3412 and between the remaining individual tooth pins 3412 at the same distance, and the length of the first gap L1 is longer than the length of the second gap L2. When the rotating portion 3411 moves to the first gap L1 toward the firing pin 321, since the tooth pin 3412 is not provided between the first gaps L1, the rotating portion 3411 and the firing pin 321 are in the idle tooth state, and the firing pin 321 in this state can be triggered by the energy accumulating mechanism 33 to move in the striking direction, thereby ejecting the gun nail. In addition, adjacent tooth grooves 3212 have the same distance, and the distance has a corresponding relationship with the second gap L2, that is, the lateral length between the 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.

As shown in fig. 7, the stopper member 342 is adapted to cooperate with the transmission member 341 to restrict the movement of the striker 321, and the transmission member 341 is provided with a stopper portion 343 cooperating with the stopper member 342.

Specifically, the limiting portion 343 is a ratchet wheel coaxially disposed with the rotating portion 3411, and the ratchet wheel and the rotating portion 3411 are both mounted on an output shaft of the driving motor and synchronously rotated by the driving motor. The ratchet has a plurality of ratchet teeth on its outer circumference, and the limiting member 342 has a pawl 3421 which is engaged with the ratchet teeth for being inserted between the adjacent ratchet teeth. Wherein, the interval between the adjacent ratchets is smaller than the width of the tooth slot 3212, so that the pawl 3421 can be more tightly and firmly matched with the ratchets, and is not easy to fall off. In practical implementation, the space between adjacent ratchets can be set to be equal to the width of the tooth slot 3212, and the matching effect can be achieved, but the matching compactness effect is slightly poorer. The limiting portion 343 may also be a ratchet directly integrally formed on the rotating portion 3411 (i.e., the rotating portion 3411 is thicker, and the ratchet is directly formed on the outer periphery of the upper portion of the rotating portion 3411, which is not shown in the drawings), which ensures that the limiting portion 343 and the rotating portion 3411 rotate synchronously, and reduces the number of parts, but has higher requirements on the processing of the rotating portion 3411.

The energy storage mechanism 33 is essentially a single-acting cylinder with a striker 321 as a piston rod, a piston member 322 as a piston, and compressed gas as power, and is configured with an air intake channel and a pressure release channel, and specific working principles are referred to in the prior art, and will not be described herein in detail.

The working principle of the nail gun 100 is as follows: the driving motor of the control device 40 is turned on to drive the transmission member 341 to rotate, and the rotating portion 3411 gradually cooperates with the tooth slot 3212 of the striker 321 from the movable tooth pin 3412a in the rotating process, so as to drive the striker 321 and the piston member 322 to move in the opposite direction of the striking direction in the energy storage mechanism 33. During the movement of the piston member 322, the air pressure of the air-storing cavity in the energy-storing mechanism 33 is increased and stored, and when the rotating portion 3411 continuously rotates to form a hollow tooth state with the firing pin 321, the piston member 322 and the firing pin 321 are pushed out along the striking direction under the action of the air pressure in the energy-storing mechanism 33, so that the firing pin 321 ejects the gun nail, and the nail shooting operation is completed. In the rotation process of the rotating part 3411, the ratchet wheel also rotates along with the rotating part 3411, and the pawl 3421 is matched with the ratchet teeth on the periphery of the ratchet wheel to play a role in preventing reverse rotation of the ratchet wheel, so that the condition that the firing pin 21 is wrongly sent out in the working process is well avoided, and the safety is enhanced.

When the rotary part 3411 drives the firing pin 321 to move to the rearmost end in the opposite direction of the striking direction in a special nailing posture such as upward muzzle of the nailing gun as shown in fig. 5, the rolling element 313 rolls to the point a along the rolling element slide 3113 inside the barrel 311 under the action of gravity, and the gap between the firing pin 321 and the rotary part 3411 is closed, so that sundries entering the nailing channel can be prevented from reentering the rotary part 3411, and the rotary part 3411 and the tooth block 3211 of the firing pin 321 are damaged. As shown in fig. 6, when the striker 321 fires the gun nail, the foremost tooth piece 3211 of the striker 321 drives the rolling member 313 to roll along the rolling member slide 3113 inside the barrel 311, the rolling member 313 can push out foreign matters from the drain port 3115 during rolling, and when the rolling member 313 rolls to a position where it is blocked by the annular protrusion 3111, i.e., the B point, the rolling member 313 can block the drain port 3115 to prevent the foreign matters from re-entering from the drain port 3115.

Effects and effects of the examples

According to the driving device for the dust-proof nail gun and the nail gun according to the embodiment, because the driving device for the nail gun comprises the gun nozzle assembly, the striking mechanism, the energy storage mechanism and the transmission mechanism, wherein the gun nozzle assembly is provided with the nail shooting channel with the drain hole on the side face of the outlet end and the rolling piece arranged in the nail shooting channel, the striking mechanism comprises the firing pin arranged in the nail shooting channel, when the firing pin pushes the nail of the gun to be driven out of the outlet end along the nail shooting channel under the action of the energy storage mechanism, the firing pin drives the rolling piece to synchronously move through the tooth block at the forefront end, so that the rolling piece pushes sundries in the nail shooting channel out of the drain hole, and when the outlet end of the nail shooting channel faces upwards and the firing pin reversely moves to the limit, the rolling piece rolls to the rear end of the rolling piece slideway under the action of gravity and closes a gap between the firing pin and the transmission mechanism, and sundries are prevented from entering the transmission mechanism. Therefore, the driving device for the dust-proof nail gun and the nail gun can discharge sundries in the nail shooting channel and prevent the sundries from entering the transmission mechanism when in use, so that the damage of the transmission mechanism and the firing pin caused by the sundries is avoided, the driving device is suitable for special nailing postures such as upward muzzle of the nail gun, and the dust-proof nail gun has a good dust-proof effect.

The above embodiments are preferred examples of the present utility model, and are not intended to limit the scope of the present utility model.

Claims (10)

1. A dustproof driving device for a nail gun, which is arranged in the nail gun and is used for driving out nails of the nail gun, and is characterized by comprising:

the gun nozzle assembly is provided with a nail shooting channel with a drain hole on the side surface of the outlet end and a rolling piece arranged in the nail shooting channel;

the striking mechanism comprises a firing pin arranged in the nail shooting channel,

the firing pin is used for pushing the gun nails to be driven out from the outlet end along the nail shooting channel, and driving the rolling elements to synchronously move in the process of pushing the gun nails, so that the rolling elements push sundries in the nail shooting channel out from the drain hole;

the energy storage mechanism is used for being matched with the striking mechanism and providing power for the striking mechanism to move along the striking direction; and

the driving mechanism is arranged on the driving motor of the nail gun and is used for driving the striking mechanism to move reversely along the striking direction so as to trigger the energy storage mechanism to store energy.

2. The dustproof driving device for a nail gun according to claim 1, wherein:

wherein the gun nozzle assembly comprises a gun barrel and a gun nozzle,

an annular bulge is arranged in the gun barrel near the outlet end, the annular bulge axially divides the inner part of the gun barrel into a front gun nozzle mounting cavity and a rear firing pin mounting cavity,

the striker installation cavity is internally provided with a striker slideway and a rolling piece slideway which extend along the axial direction and are arranged in parallel,

the striker slideway corresponds to the central hole of the annular bulge and is provided with the striker therein,

the rolling piece slideway corresponds to the end face of the annular bulge and is provided with the rolling piece therein, the front end of the side wall of the rolling piece slideway is provided with the drain opening which is communicated with the outside,

the gun nozzle is arranged in the gun nozzle mounting cavity, the gun nozzle is provided with an inner channel which is penetrated in the front-back direction and corresponds to the central hole of the annular bulge, and the inner channel and the firing pin mounting cavity form the nail shooting channel together.

3. The dustproof driving device for a nail gun according to claim 2, wherein:

wherein one side of the firing pin is provided with a plurality of tooth blocks which are distributed along the axial direction and positioned in the rolling element slideway,

tooth grooves matched with the transmission mechanism are formed between adjacent tooth blocks, and the tooth block closest to the outlet end is matched with the rolling piece stop.

4. A dustproof driving apparatus for a nail gun according to claim 3, wherein:

when the outlet end of the nail shooting channel faces upwards and the striking mechanism moves to the limit along the reverse direction of the striking direction under the drive of the transmission mechanism, the rolling piece rolls to the rear end of the rolling piece slideway under the action of gravity, and a gap between the firing pin and the transmission mechanism is closed.

5. The dustproof driving device for a nail gun according to claim 2, wherein:

wherein the gun nozzle assembly further comprises a magazine attachment,

the side wall of the firing pin slideway is provided with a mounting groove for mounting the magazine connecting piece,

and one part of the magazine connecting piece is arranged in the mounting groove, the other part of the magazine connecting piece is positioned outside the gun barrel and is used for connecting a magazine, and the magazine connecting piece is provided with a gun nail hole channel for a gun nail of the magazine to enter the firing pin slideway.

6. The dustproof driving device for a nail gun according to claim 1, wherein:

wherein the striking mechanism further comprises a piston component connected to the rear end of the firing pin,

the piston component is axially movably arranged in the energy storage mechanism;

the energy storage mechanism is a single-acting cylinder which adopts the firing pin as a piston rod, the piston component as a piston and compressed gas as power.

7. The dustproof driving device for a nail gun according to claim 1, wherein:

wherein the transmission mechanism comprises a transmission part and a limiting part,

the transmission part is used for being matched with the firing pin and driving the firing pin to reversely move along the striking direction, the transmission part is provided with a limiting part matched with the limiting part,

the limiting member is adapted to cooperate with the transmission member to limit movement of the striker.

8. The dustproof driving apparatus for a nail gun according to claim 7, wherein:

wherein the transmission part comprises a rotating part and a matching part,

the rotating part is driven by the driving motor to rotate,

the matching part is arranged on the rotating part and provided with a plurality of toothed pins matched with the firing pin, and the matching part is used for driving the firing pin to do linear motion along the striking direction;

the limiting part is a ratchet wheel coaxially arranged with the rotating part, and the periphery of the ratchet wheel is provided with a plurality of ratchet teeth;

the limiting component is a pawl matched with the ratchet teeth and is used for being embedded between the adjacent ratchet teeth.

9. The dustproof driving apparatus for a nail gun according to claim 8, wherein:

wherein the toothed pin comprises at least one movable toothed pin,

the rotating part is provided with a movable hole for the movable tooth pin to move,

a spring is arranged between the movable tooth pin and the rotating part, two ends of the spring respectively act on the rotating part and the movable tooth pin,

the rotating part is provided with a containing cavity for installing the spring.

10. A nail gun, comprising:

the dustproof driving device for a nail gun according to any one of claims 1 to 9.