CN209408409U - A nail gun with a new driving device - Google Patents

Abstract

The utility model discloses a nail gun with a novel driving device, which belongs to the technical field of fastening. A nail gun with a new type of driving device, at least including a nail gun main body, a nozzle and a piston assembly; a piston assembly is slidably arranged in the nail gun main body, and a driving device is connected to the rear end of the piston assembly, and the driving device It is used to drive the piston assembly to move in the main body of the nail gun and to fire the firing pin; the driving device includes a rack rod, and a driving gear is arranged on the outside of the nail gun body, and the driving gear is adapted to the rack rod and engage. The technical proposal utilizes the difference in atmospheric pressure at the front and rear ends of the cylinder as power to drive the piston to move. Moreover, the whole process adopts a mechanical structure without the use of gunpowder or an air compressor as an external power source, so it is very environmentally friendly and safe, and it is very convenient to use without an external power supply.

Description

A nail gun with a new driving device

technical field

The utility model belongs to the field of fastening technology, in particular to a nail gun with a novel driving device.

Background technique

At present, the traditional method of domestic ceiling installation is: tie an impact drill to the end of a long rod, the operator holds the long rod to make the impact drill drill holes in the bottom of the ceiling and install expansion bolts, install the boom on the bolts, and then install on the boom Method of ceiling construction.

Traditional methods are time-consuming, labor-intensive, costly, and labor-inefficient. Gunpowder nail guns have appeared on the market in recent years, and its principle is to drive steel nails into cement by using gunpowder explosion. Its advantages are obvious, greatly reducing the labor intensity. However, there are great hidden dangers in safety. The structure of gunpowder gun nails is that the nail and the propellant are combined into one. The nail cap part of each nail has its own propellant. Thereby the gunpowder nail gun is easy to transform into a powerful wounding weapon, and there are often reports of similar incidents. Therefore, it has always been included in the scope of national security supervision. Or use an air compressor to attack, but such a design often requires external equipment and requires relatively high resources. And it is inconvenient to carry.

Utility model content

The purpose of this utility model is to provide a nailing device with a new type of driving device that does not require air supply from an air compressor, has high nailing force, no recoil, low noise, low cost of consumables, easy maintenance, safe use, and no need for safety supervision. gun.

The purpose of this utility model is achieved in that a nail gun with a novel driving device at least includes a nail gun main body, a gun mouth and a piston assembly; a piston assembly is slidably arranged in the nail gun main body, and the piston assembly The rear end is connected with a driving device, which is used to drive the piston assembly to move in the main body of the nail gun and to fire the striker; the driving device includes a rack pull rod, and a driving gear is arranged outside the main body of the nail gun to drive The gear fits and meshes with the rack pull rod.

Preferably, one end of the drive gear is formed with a socket post, and a hand crank is connected outside the socket post, and the hand crank is used to drive the drive gear to rotate.

Preferably, one side of the driving gear is rotatably provided with a locking pawl, and the locking pawl is adapted to the rack pull rod.

Preferably, mounting seats are respectively provided on both sides of the rack pull rod, and the locking pawl and the driving gear are rotatably arranged between the two mounting seats.

Preferably, a mounting hole is formed on the rear side of the locking pawl, a limit pressing piece is fixed on the upper side of the rear end of the mounting seat, and a tension spring is arranged between the limiting pressing piece and the mounting hole; two A rear limit pin is also arranged between the mounting seats, and the rear limit pin is located at the rear side of the locking pawl.

Preferably, the striker includes at least a front needle and a rear needle body; a nozzle is provided on the outside of the front needle and the rear needle body, and the nozzle is arranged on the front side of the front end cover; the front end step of the rear needle body is limited to The front end of the inner hole of the sealing ring bracket, the front needle is formed with a storage hole for installing nails

Preferably, the front end of the gun mouth is also connected with a gun head, and the rear end of the gun head is arranged on the inside of the gun mouth; the front end of the front needle is slidably arranged on the gun head, and the rear end of the front needle is formed There is an abutment end for limiting.

Preferably, the inner side of the rear end of the front end cover is provided with a buffer block and a buffer sealing sleeve sequentially from the inside to the outside, and the outer side of the buffer sealing sleeve is provided with a third sealing ring, and the third sealing ring is against the main body of the nail gun inside.

Preferably, the front end of the buffer sealing sleeve is formed with a sealing installation groove backward, and a fourth sealing ring is installed in the sealing installation groove, and the front end of the fourth sealing ring is against the inner side of the front end cover; the rear of the buffer sealing sleeve A "stepped" seal is formed on the outer edge of the end, and the rear side of the seal is against the front end of the nail gun body; the front end of the impact head is formed with a force-receiving part; the rear side of the buffer block is formed with a A tapered bell mouth, the front end of the piston assembly is formed with a piston front column adapted to the tapered bell mouth.

Preferably, the rear end of the main body of the nail gun is provided with a push rod sleeve, the rear end of the driving device is sleeved in the push rod sleeve and the rear end of the driving device is connected to a movable plug, the movable plug There is a rear limit screw plug at the rear end, and a return spring abuts between the rear limit screw plug and the movable plug.

Compared with the prior art, the utility model has outstanding and beneficial technical effects as follows:

1. This technical solution uses the difference in atmospheric pressure between the front and rear ends of the main body of the nail gun as the power to drive the piston to move. Moreover, the whole process adopts a mechanical structure without the use of gunpowder or an air compressor as an external power source, so it is very environmentally friendly and safe, and it is very convenient to use without an external power supply. At the same time, it can also solve the current problem that gunpowder nails need to be monitored by national laws, and it also solves an important safety problem.

2. Driven by the rack and pinion, the force is large and stable. With the cooperation of the locking pawl, the functions of release and locking can be realized. The overall design is very delicate.

3. The piston assembly adopts a sealing structure in many places, and the sealing effect is good.

4. The triggering of the utility model is also very simple after the momentum is in place. As long as the nail is pressed against the processing surface, such as the cement surface, and the piston is pushed to form a short stroke by the elasticity of the spring, it can be hit automatically, which is very convenient and safe.

5. The utility model realizes the function through the mechanical structure, and the whole process does not produce any waste or toxic substances, which can greatly reduce the cost of consumables while saving energy and environmental protection, and greatly improve the service life of the entire equipment.

Description of drawings

Fig. 1 is one of structural diagram of the utility model;

Fig. 2 is one of the sectional views of Fig. 1;

Fig. 3 is the second cross-sectional view of Fig. 1;

Fig. 4 is a partial enlarged view of place A in Fig. 2;

Fig. 5 is a partial enlarged view of place B in Fig. 3;

Fig. 6 is a partial enlarged view of place C in Fig. 3;

Figure 7 is a partial enlarged view at D in Figure 3;

Fig. 8 is a schematic structural view of the driving device;

Fig. 9 is one of structural diagrams of the utility model;

Fig. 10 is a schematic diagram of the sealing structure at the front end cover;

Fig. 11 is a working principle diagram of the locking assembly;

Fig. 12 is a structural schematic diagram of a Y-shaped sealing ring.

In the figure: 1-nail gun main body; 2-piston assembly; 3-drive device; 4-lock assembly; 5-gun nozzle; 6-gun head; 7-buffer block; 8-buffer seal sleeve; 9-push Rod sleeve; 10-dust cover; 11-vacuum cavity; 12-firing pin; 13-rear end cover; 14-second spring; 15-first spring; 16-front cover; 17-sealing ring bracket; 18-Y 19-Guide sleeve; 21-Impact head; 22-Piston body; 23-Guide plate; 24-Forced part; 25-Piston front column; Position ratchet; 34-installation seat; 35-limit pressure piece; 36-tension spring; 37-rear position limit pin; 38-firing fixed seat; 39-firing ejector rod; - locking bracket; 43 - front limit pin; 71 - tapered bell mouth; 81 - third sealing ring; 82 - sealing installation groove; 83 - fourth sealing ring; 84 - sealing part; 91 - movable plug; 92-limiting screw plug; 93-returning spring; 121-front needle; 122-rear needle; 131-air vent; 161-limiting hole; Step part; 211-limiting part; 213-incline; 231-sealing groove; 232-first sealing ring; 233-connecting ear; Socket hole; 331-installation hole; 411-limiting surface; 412-locking short column; 413-inclined surface; 421-connecting column.

Detailed ways

The utility model will be further described below with specific embodiments.

Embodiment 1: As shown in Figure 1-12, a nail gun with a new type of driving device at least includes a nail gun main body 1, a gun nozzle 5 and a piston assembly 2; a piston is slidably arranged in the nail gun main body 1 Assembly 2, the rear end of the piston assembly 2 is connected with a driving device 3, the driving device 3 is used to drive the piston assembly 2 to move in the nail gun main body 1 and to fire the striker 12 to move;

The driving device 3 includes a rack pull rod 31 , and a drive gear 32 is provided outside the nail gun main body 1 , and the drive gear 32 fits and meshes with the rack pull rod 31 .

The technical solution specifically describes a nail gun with a new type of driving device that uses the difference in internal and external atmospheric pressure as power to carry out nailing operations. Specifically, in actual use, when the driving device 3 drives the piston assembly 2 to move toward the rear side in the nail gun main body 1, the front end of the piston assembly 2 will form a vacuum chamber 11, and the rear end of the piston assembly 2 will remain A normal atmospheric pressure forms an air pressure difference between inside and outside. The advantage of this is that when the driving device 3 removes the connection to the piston assembly 2, the piston assembly 2 will move at a very fast speed under the action of atmospheric pressure. The speed hits the striker 12, so that the nails that need to be driven can be driven into the cement wall or other walls. The piston assembly 2 described in this technical solution is mainly to reduce the air pressure at the front end of the piston assembly 2 in the main body 1 of the nail shooting gun as much as possible. Ideally, it can realize a vacuum state and form a sealed state on the front and rear sides. As for how the piston assembly 2 performs a vacuum-like action during the sliding process in the nail gun main body 1 , that is, how to achieve sealing is common knowledge of those skilled in the art, and will not be repeated here. At the same time, corresponding to the structure of the driving device 3, hydraulic or pneumatic or other structures capable of driving the piston assembly 2 to move in the nail gun main body 1 can be used to realize the technical solution. In the above-mentioned solutions, no matter in the field of nail gun technology or the field of daily mechanical engineers, corresponding solutions can be thought of, so I will not repeat them here. In particular, reference can be made to the publication of Patent No. 2015100537641, which describes a method in which a nailing gun contains a piston structure, or can also refer to a patent with a publication number of: 108150583A, which specifically introduces a piston nail gun body 1 combination device. Therefore, the content described in this technical solution is complete and sufficient. At the same time, the impact force required for nails to be driven into cement walls or other walls, and the calculation of the length of the main body 1 of the nail gun to achieve sufficient pressure to produce sufficient impact force are all calculation issues of mechanical properties, not this patent. The focus of protection, so related parameters are omitted.

The technical solution specifically discloses a driving structural principle. In actual use, the drive gear 32 is rotated to drive the rack cylinder to move to the rear end of the nail gun main body 1, through the connection between the piston assembly 2 and the driving device 3, more specifically, through the piston assembly 2 and the connection between the rack rod 31, such a design can realize the driving piston assembly 2 to move toward the rear end of the nail gun main body 1. Moreover, with the rack and pinion structure, the power transmission is stable and the transmission torque can be relatively large, and the overall structure is simple and stable. In actual operation, the movement of the piston assembly 2 can be realized as long as the driving gear 32 is rotated.

Preferably, one end of the driving gear 32 is formed with a socket post 321 , and a hand crank 322 is sleeved on the socket post 321 , and the hand crank 322 is used to drive the drive gear 32 to rotate. This technical solution specifically illustrates a way to make the drive gear 32 rotate. In actual use, the so-called socket column 321 can be a polygonal prism section, and then the inside of the hand crank 322 also has a socket hole 323 that is adapted to the prism section, through the socket hole 323 and the prism section When the hand crank 322 is rotated, the drive gear 32 can be rotated. Moreover, the design of the hand crank 322 can increase the torque through mechanical design, thereby reducing the force required to allow the drive gear 32 to rotate. The detailed mechanical structure is not the focus of this patent application, so it will not be described in detail. At the same time, such a design can completely solve the problem of requiring an external power source, and in actual use, additional equipment such as compressors can be completely discarded. Especially in places with bad environment, when there is no power supply, the technical solution can completely get rid of the shackles of the power supply. Therefore, the technical solution is more energy-saving and environment-friendly than the prior art, and it is labor-saving, silent and stable.

Preferably, one side of the drive gear 32 is rotatably provided with a locking pawl 33 , and the locking pawl 33 is adapted to the rack pull rod 31 . This technical solution specifically illustrates a function of using the principle of a ratchet or a ratchet to realize the position limitation. In actual design, the matching between the locking pawl 33 and the rack rod 31 means that a part of the lower end of the locking pawl 33 must be embedded in the gap between the teeth of the rack rod 31, and The lower end portion is inclined toward the rear end. Thereby when the rack pull bar 31 only when moving backwards, the locking ratchet 33 can not affect the rack pull bar 31 to slide towards the rear end when passing back and forth; The position pawl 33 abuts between the teeth and thus can prevent the rack pull rod 31 from moving towards the front end. The advantage of this design is that it can give people a rest time, similar to a braking device. That is to say, for example, when turning the hand crank 322 and stopping to rest, no additional action is required. The position of the rack rod 31 can be fixed due to the positional relationship between the locking pawl 33 and the teeth. . This design is very user-friendly. Simultaneously another advantage is, after all nailing operations all finished, owing to can be designed as the design that piston and rack pull bar 31 separate, when piston moves forward, rack pull bar 31 is motionless. And if you want to reset the rack pull rod 31, you only need to move the locking pawl 33 at an angle so that the lower end of the locking pawl 33 can break away from the engagement between the teeth and you can use gravity to reset naturally. The simple and clear.

Preferably, mounting seats 34 are respectively provided on both sides of the rack pull rod 31 , and the locking pawl 33 and the driving gear 32 are rotatably disposed between the two mounting seats 34 . This technical solution specifically introduces an installation method of the locking pawl 33 and the driving gear 32 . The locking pawl 33 and the driving gear 32 are installed between the two mounting seats 34 so that the tooth surface portion of the rack pull rod 31 is engaged with the locking pawl 33 and the driving gear 32 . Preferably, the tooth surface portion of the rack pull rod 31 should be designed to face upwards, which is convenient for operation. At the same time, there are various ways of "rotatable". Preferably, the "rotatable" way is that a pin shaft passes through the locking pawl 33 and the two mounting seats 34 at the same time; or a pin shaft passes through the locking pawl 33 and the two mounting seats at the same time 34.

Preferably, as shown in FIG. 9 , a mounting hole is formed on the rear side of the locking pawl 33 , and a limiting pressing piece 35 is fixed on the upper side of the rear end of the mounting base 34 , and the limiting pressing piece 35 and the mounting hole A tension spring 36 is arranged between 331 ; a rear limit pin 37 is also arranged between the two mounting seats 34 , and the rear limit pin 37 is located at the rear side of the locking pawl 33 .

This technical solution specifically describes a method capable of increasing the abutment pressure between the locking pawl 33 and the rack pull rod 31 . Specifically, since the tension spring 36 is set between the rear side of the locking pawl 33 and the upper side of the rear end of the mounting seat 34, that is to say, in the daily use process, there is always a forward movement of the locking pawl 33. The tendency of the rear side to rotate, so that the locking pawl 33 can be quickly reset after the rotation, so that it can be stuck between the teeth of the rack pull rod 31 when it rotates next time. To prevent the detent ratchet 33 from being out of joint. At the same time, the function of the rear position limiting pin 37 is to limit the swing angle of the locking pawl 33 . Specifically, in the actual use process, if the swing range of the locking pawl 33 is too large, it is easy to cause the locking pawl 33 to not be accurately stuck between the teeth of each rack rod 31. If it just stops at this time If the pulling force to the rack pull rod 31 is reduced, the rack pull rod 31 will quickly impact to the front end under the action of pressure, resulting in the inability to realize the position-limiting effect, and it is easy to accidentally injure the operating worker by the hand crank 322.

Preferably, the piston assembly 2 includes a piston body 22, and the impact head 21 can be arranged in the piston body 22; the rear end of the impact head 21 is formed with a stop portion 211; the piston assembly 2 also includes There is a lock assembly 4 arranged outside the rear end of the impact head 21 , and the lock assembly 4 is adapted to the limiting portion 211 to realize the connection and release of the impact head 21 . This technical solution specifically illustrates a structural form of the piston assembly 2, and such a design method can provide a brand-new design idea. In conventional design ideas, the piston assembly 2 generally maintains a connection with the drive assembly. When the piston hits forward, it will move together with the drive device 3. Such a design will increase the recoil of the overall equipment. And through the design of the locking assembly 4, the connection and release of the impact head 21 can be realized. Especially in the actual use process, because only the striking head 21 and the piston main body 22 strike as a whole in the process of hitting the firing pin 12, the speed will be faster, and the impact force that can be given to the front firing pin 12 is just greater. Preferably, the impact head 21 and the piston main body 22 are threadedly connected to form an integral body. The locking device described in this technology can be connected and released by a structure similar to the three-jaw chuck commonly used in current machine tools; it can also be clamped and released by the relative movement of the jaws driven by the main body 1 of the nail gun.

Preferably, the lock assembly 4 at least includes a locking pawl 41, and the locking pawl 41 abuts against the limit portion 211; The locking bracket 42 on both sides of the pawl 41, the locking pawl 41 and the driving device 3 are connected through the locking bracket 42; the inside of the locking bracket 42 is provided with a front limit pin 43, and the locking pawl 41 is A limit surface 411 is formed on the side, and the front limit pin 43 is located at the rear end of the limit surface 411 for limiting the rotation angle of the locking pawl 41 . The technical solution specifically illustrates the structural features of a locking device. In actual use, the locking bracket 42 is used to connect the locking pawl 41 and the driving device 3, so that it can be ensured that when the driving device 3 acts on the piston assembly 2, the piston assembly 2 can be brought to move to the rear end of. At the same time, because the locking bracket 42 is hinged with the locking pawl 41, the working principle of the locking pawl 41 is to clamp in the limit part 211, and then use the front limit pin 43 to limit the movement of the locking pawl 41. Turn the angle so that when the impact head 21 is pulled toward the rear end, the impact head 21 can be firmly locked in the two locking pawls 41 . Therefore, the purpose of vacuuming by using other parts of the piston assembly 2 can be achieved. The locking pawl 41 and the locking bracket 42 may be connected in such a way that a pin shaft passes through the locking pawl 41 and the locking bracket 42 to achieve a stable connection while maintaining rotation. Such a design is convenient to process and quick to assemble, and is a preferred installation method.

Preferably, the rear end of the locking bracket 42 is formed with a connecting column 421 , and one end of the driving device 3 is fixedly arranged in the connecting column 421 . This technical solution specifically illustrates a connection method between the driving device 3 and the locking bracket 42 . Specifically, one end of the driving device 3 is fixedly arranged in the connecting column 421. The preferred specific method may be that a hole is formed in the connecting column 421, and then the front end of the driving device 3 extends into the hole, and a shaft passes through it at the same time. Pass the connecting column 421 and the front end of the driving device 3 . Such a design can firmly establish a connection between the driving device 3 and the piston assembly 2 . Specifically, the front end of the driving device 3 may be the right end of the rack pull rod 31 .

Preferably, the lower end of the locking pawl 41 is formed with a locking stub 412 , and an inclined surface 413 of the locking stub 412 is opposed to an inclined surface 213 of the limiting part 211 to play the role of locking . This technical solution specifically illustrates a structural form of the locking pawl 41 . The locking post 412 is installed obliquely toward the rear end side of the nail gun main body 1 . Such a design can also be a way to increase the tightness of the connection between the locking pawl 41 and the limiting portion 211 . Specifically, when the piston assembly 2 as a whole moves toward the rear end of the main body 1 of the nail gun, the short locking column 412 can firmly withstand the limiting portion 211 . This way of connection is tighter.

Preferably, the limiting portion 211 is an annular groove; the number of the locking components 4 is at least two and are evenly distributed in the annular groove. This technical solution specifically illustrates the structure of the limiting portion 211. The design of the ring groove allows the locking stub 412 to firmly abut against the rear end of the ring groove, so that the abutment can be made more tightly.

Preferably, the piston assembly 2 further includes a guide disc 23; a sealing groove 231 is formed on the outer edge of the guide disc 23, and a first sealing ring 232 is disposed in the sealing groove 231. This technical solution specifically describes a design that can increase the stability of the sliding of the piston assembly 2 in the nail gun main body 1 . Specifically, there is a certain distance between the guide disc 23 and the piston main body 22 . During actual use, the piston body 22 and the guide plate 23 can be kept in contact with the inner wall of the nail gun body 1 at all times, thereby further increasing the airtightness and increasing the vacuum effect of the front end.

Preferably, two connecting ears 233 are respectively formed on both sides of the front end of the guide plate 23 , and the rear end of the locking bracket 42 is disposed between the two connecting ears 233 and fixedly connected to the connecting ears 233 . This technical solution specifically illustrates a connection mode between the piston body 22 and the guide plate 23 . Such a connection can make the connection between the two more closely and at the same time have a certain adjustment range. The specific way of fixed connection is preferably that a shaft passes through the connecting ear 233 and the locking bracket 42 at the same time.

Preferably, the outside of the driving device 3 is provided with a firing fixed seat 38, the firing fixed seat 38 is arranged coaxially with the mounting seat 34 and the firing fixed seat 38 is arranged on the outside of the mounting seat 34; the outer side of the firing fixed seat 38 is fixed Several firing ejector rods 39 are provided, and the firing ejector rods 39 correspond to the locking pawls 41 one by one; the rear end of the nail gun main body 1 is provided with a rear end cover 13, and the rear end cover 13 is connected to the firing ejector. The second spring 14 abuts against between the fixing seats 38 ; the first spring 15 is disposed between the guide plate 23 and the locking pawl 41 ; and several ventilation holes 234 are formed on the guide plate 23 . This technology specifically describes a way of connecting and disconnecting the driving device 3 and the piston assembly 2 . In actual use, when the nail is installed in place, the driving device 3 is used to pull the piston assembly 2 to the set position, and only a certain thrust is used to align the nail to the cement wall. Let the firing ejector rod 39 pass through the air hole 234 and directly abut against the upper end of the locking pawl 41 . At this time, the locking pawl 41 rotates at a certain angle so that the locking pawl 41 breaks away from the stopper 211. At this time, the piston body 22 and the impact head 21 rush toward the striker 12 together under the action of the air pressure difference, thereby achieving The effect of percussion firing pin 12.

Preferably, several ventilation holes 131 are formed on the rear side of the rear end cover 13 , and the firing ejector rod 39 passes through the ventilation holes 131 . This technical solution specifically illustrates a preferred installation method of the firing ejector rod 39 . The air vent 131 is designed to allow air to flow in as much as possible to ensure that the pressure difference between the front and back of the piston assembly 2 is large enough. At the same time, the firing ejector rod 39 is penetrated in the air hole 131 so that the firing ejector rod 39 can touch the upper end of the locking pawl 41 as early as possible, so that the length of the nail gun main body 1 can be reduced.

Preferably, the front end of the nail gun main body 1 is provided with a front end cover 16, the inner side of the front end cover 16 is provided with a sealing ring support 17, and the outer side of the sealing ring support 17 and/or the piston main body 22 is provided with a Y-shaped sealing ring 18, so The striker 12 is slidably arranged in the Y-shaped sealing ring 18; at least one second sealing ring 171 is sheathed on the outer side of the sealing ring bracket 17; an elastic groove 181 is formed on the outer end surface of the Y-shaped sealing ring 18; The upper and lower ends of the elastic groove 181 outside the piston body 22 abut against the inner wall of the nail gun body 1 and the outer end surface of the piston body 22 respectively. This technical solution specifically describes a sealing structure at the front end of the main body 1 of the nail gun. Such a design can greatly increase the sealing performance. Especially in the stage of vacuuming, such a design is more important, and such a design can further ensure the effect of vacuuming. This technical scheme has especially designed a kind of Y-shaped sealing ring 18, and the upper and lower sides of the elastic groove 181 of this Y-shaped sealing ring 18 are in the trend of outward opening. When the upper and lower ends of the elastic groove 181 abut against the inside of the nail gun main body 1 and the outer end surface of the piston body 22 respectively, since the elastic groove 181 itself is in a state of being squeezed, the Y-shaped sealing ring 18 is There is a drive and tendency to expand outward. Such a design can further increase the sealing effect.

Preferably, a guide sleeve 19 is provided at the rear end inside the front end cover 16, and the striker 12 is slidably disposed in the guide sleeve 19; a step portion 191 is formed at the rear end of the guide sleeve 19, and the front end cover 16 A limiting hole 161 adapted to the stepped portion 191 is formed inside. This technical solution specifically illustrates a design that can increase the running stability of the striker 12 . The inside of the guide sleeve 19 is a through hole, which can correct the trajectory of the striker 12 movement and reduce energy loss. At the same time, the design of the step portion 191 can better position the guide sleeve 19 and facilitate installation and positioning.

Preferably, the striker 12 includes at least a front needle head 121 and a rear needle body 122; a gun mouth 5 is arranged on the outside of the front needle head 121 and the rear needle body 122, and the gun mouth 5 is arranged on the front side of the front end cover 16 The front end step of the rear needle body 122 is limited to the front end of the inner hole of the sealing ring support 17, and the front needle head 121 is formed with a storage hole for installing nails. This technical solution specifically illustrates a design structure of the striker 12 . General striker 12 all is integral design, and length is longer. Not only the processing requirements are high, but it is also easy to damage and break under strong instantaneous impact. And at least a two-stage design can avoid such problems to the greatest extent. The design of the gun nozzle 5 can correct a motion track for the firing pin 12. Ensure that the angle of the striker 12 is facing the front when it hits the nail. At the same time, the design that the front end step of the rear needle body 122 is limited to the front end of the inner hole of the sealing ring support 17 can better realize the position limitation of the rear needle body 122 .

Preferably, the front end of the gun mouth 5 is also connected with a gun head 6, and the rear end of the gun head 6 is arranged on the inside of the gun mouth 5; the front end of the front needle is slidably arranged on the gun head, and the front needle The rear end is formed with abutting end for limiting. This technical solution specifically introduces a front-end design idea of a nailing gun. Such a design is concise and clear, and the structure is stable, which is a preferred structural design. At the same time, this design can also achieve fast and accurate shooting with the aid of the gun head 6 when the front section of the front needle head is rushed out, and at the same time, it can be used to "brake" the back end against the rear end surface of the gun head 6 to prevent The front needle rushes out of the gun head 6 due to inertia. Simultaneously in actual use, when nailing again, as long as the nail is inserted into the gun head 6, it is not necessary to install the gun head 6 and the gun nozzle 5 again, which improves the working efficiency and reduces the loss.

Preferably, the inner side of the rear end of the front end cover 16 is sequentially provided with a buffer block 7 and a buffer sealing sleeve 8, and the outer side of the buffer sealing sleeve 8 is provided with a third sealing ring 81, and the third sealing ring 81 is against the The inner side of the main body 1 of the nail gun. This technical solution specifically introduces a shape of a sealing ring, and such a design can increase the sealing effect more comprehensively. Simultaneously, the design of the buffer block 7 can reduce the impact of the piston body 22 on the buffer block 7, reducing vibration and recoil.

Preferably, the front end of the buffer seal sleeve 8 faces the rear side and forms a seal installation groove 82, and a fourth seal ring 83 is installed in the seal installation groove 82, and the front end of the fourth seal ring 83 is against the inner side of the front end cover 16; The outer edge of the rear end of the buffer sealing sleeve 8 is formed with a "step-shaped" sealing part 84, and the rear side of the sealing part 84 is against the front surface of the nail gun main body 1; the front end of the impact head 21 is formed with a The force part 24 , the outer diameter of the force receiving part 24 is larger than the outer diameter of the guide sleeve 19 . This technical solution specifically introduces a sealing design using a buffer seal sleeve 8. In order to solve the sealing problem between the nail gun main body 1 and the front end cover 16, this technical solution can have a Parts with a sealing function are used to increase the sealing between the nail gun main body 1 and the front end cover 16 . Such a design has a simple structure and good sealing performance, and is a preferred structural design.

Preferably, the rear side of the buffer block 7 is formed with a tapered bell mouth 71 , and the front end of the piston assembly 2 is formed with a piston front column 25 adapted to the tapered bell mouth 71 . This technical solution specifically illustrates a design structure of the buffer block 7, and the matching design of the tapered bell mouth 71 and the piston front column 25 can increase the tightness of cooperation between the two and increase the integrity of the equipment.

23 Preferably, the rear end of the nail gun main body 1 is provided with a push rod sleeve 9, the rear end of the driving device 3 is sleeved in the push rod sleeve 9 and the rear end of the driving device 3 is connected to There is a movable plug 91 , the rear end of the movable plug 91 is provided with a rear limit screw plug 92 , and a return spring 93 abuts between the rear limit screw plug 92 and the movable plug 91 . The technical solution specifically discloses a design idea of the push rod sleeve 9 . The push rod cover 9 can be used for convenient holding and increases the effective length of work. At the same time, the return spring 93 between the internal movable plug 91 and the limit plug can be rotated under the locking pawl 33, and the elastic force of the return spring 93 can be used to impel the rack pull rod 31 to return to its original position. Such a design is concise and clear, and is a preferred structural design.

Preferably, the push rod cover 9 can be fixedly connected by screwing with the firing fixing seat 38 or the rear end cover 13 . This method is simple and convenient to install, and is the preferred structural design.

Embodiment 2, as shown in FIG. 5 and FIG. 8 , this embodiment is basically the same as Embodiment 1, the difference lies in that “one side of the locking pawl 33 is formed with a mounting hole 331, and the mounting seat 34 The upper end of the upper end is provided with a limit pressing piece 35, and a tension spring 36 is arranged between the limit pressing piece 35 and the installation hole 331. There is a reset torsion spring 332" against between the claws 33. That is to say, a reset torsion spring can be arranged at the front end of the locking pawl 33 , so that there is always a force to drive the locking pawl 33 against the rack pull rod 31 . This makes the sliding process of the rack rod 31 smoother and labor-saving.

Embodiment 3, this embodiment is basically the same as Embodiment 1, the difference lies in that the rear limit pin 37 also has a function as a signal for the rack pull rod 31 to move to the set position. Specifically, at this time, the tooth surface height of the rack pull rod 31 should be designed "from high to low" from the front end to the rear end. When the rack pull rod 31 moves to the set position, the distance between the lower end of the locking pawl 33 and the rear limit pin 37 becomes smaller and smaller as the tooth surface is lifted. 31 just can't move, and performance is exactly that hand wheel can not be shaken again externally, and this moment then represents rack pull bar 31 and can enter the percussion step in place.

Such a design has a function of prompting and limiting. Can tell the user when to stop. In this embodiment, "from high to low" does not represent a linear change process, and it can also be one of the teeth on the rack rod 31. Its tooth surface is higher than other tooth surfaces, and when advancing to this tooth At this time, the locking ratchet 33 can be forced to abut against the rear end limit pin 37, thereby realizing the limit to the rack pull rod.

Embodiment 4, as shown in FIGS. 1-3 , this embodiment is basically the same as Embodiment 1, the difference is that a dustproof cover 10 is provided at the front end of the gun head 6 . The shape of the dust cover 10 is open outwards, and such a design can reduce the impact of dust or other impurities on the equipment.

The foregoing embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore: all equivalent changes made according to the structure, shape, and principle of the present utility model should be covered by this utility model. within the scope of protection of utility models.

Claims (10)

1. A nail gun with a novel driving device, characterized in that it at least includes a nail gun main body (1), a gun nozzle (5) and a piston assembly (2); the nail gun main body (1) can be slidably arranged There is a piston assembly (2), the rear end of the piston assembly (2) is connected with a driving device (3), and the driving device (3) is used to drive the piston assembly (2) to move and fire in the nail gun main body (1) The firing pin (12) moves; The driving device (3) includes a rack pull rod (31), and a drive gear (32) is arranged on the outside of the nail gun main body (1), and the drive gear (32) is adapted to the rack pull rod (31). and mesh. 2. The nail gun with a novel driving device according to claim 1, characterized in that: one end of the drive gear (32) is formed with a socket post (321), and the socket post (321) is covered with a hand The crank handle (322), the hand crank handle (322) is used to drive the drive gear (32) to rotate. 3. The nail gun with a novel driving device according to claim 1, characterized in that: one side of the drive gear (32) is rotatably provided with a detent pawl (33), and the detent pawl (33) ) is adapted to the rack pull rod (31). 4. The nail gun with a new driving device according to claim 3, characterized in that: mounting seats (34) are respectively arranged on both sides of the rack pull rod (31), and the locking pawl (33 ) and the drive gear (32) are rotatably arranged between the two mounting seats (34). 5. The nail gun with a new driving device according to claim 4, characterized in that: a mounting hole (331) is formed on the rear side of the locking pawl (33), and a mounting hole (331) is formed at the rear end of the mounting seat (34). The upper side is fixed with a limit pressing piece (35), and an extension spring (36) is arranged between the limit pressing piece (35) and the mounting hole (331); A rear limit pin (37) is provided, and the rear limit pin (37) is located at the rear side of the locking pawl (33). 6. The nail gun with novel driving device according to claim 1, characterized in that: the striker (12) at least includes a front needle (121) and a rear needle body (122); the front needle (121 ) and the outside of the rear needle body (122) are provided with a gun nozzle (5), and the gun nozzle (5) is arranged on the front side of the front end cover (16); 17) The front end of the inner hole, the front needle (121) is formed with a storage hole for installing nails. 7. The nail gun with novel driving device according to claim 6, characterized in that: the front end of the gun mouth (5) is also connected with a gun head (6), and the rear end of the gun head (6) is arranged on The inner side of the gun mouth (5); the front end of the front needle (121) is slidably arranged on the gun head (6), and the rear end of the front needle (121) is formed with an abutting end for limiting. 8. The nail gun with a new driving device according to claim 6, characterized in that: the inner side of the rear end of the front cover (16) is sequentially provided with a buffer block (7) and a buffer sealing sleeve (8 ), the outer side of the buffer sealing sleeve (8) is sheathed with a third sealing ring (81), and the third sealing ring (81) abuts against the inner side of the nail gun main body (1). 9. The nail gun with a new driving device according to claim 8, characterized in that: the front end of the buffer sealing sleeve (8) is formed with a seal installation groove (82) facing the rear side, and the seal installation groove (82) A fourth sealing ring (83) is installed inside, and the front end of the fourth sealing ring (83) is against the inner side of the front end cover (16); the outer edge of the rear end of the buffer sealing sleeve (8) is formed with a "step type" Sealing part (84), the rear side of sealing part (84) leans against the front end face of nail gun main body (1); The front end of impact head (21) is formed with force-bearing part (24); The buffer block ( The rear side of 7) is formed with a tapered bell mouth (71), and the front end of the piston assembly (2) is formed with a piston front column (25) adapted to the tapered bell mouth (71). 10. The nail gun with a new driving device according to claim 1, characterized in that: the rear end of the nail gun body (1) is provided with a push rod sleeve (9), and the driving device (3) The rear end of the push rod sleeve (9) is sleeved in the push rod sleeve (9) and a movable plug (91) is connected to the rear end of the driving device (3). The rear end of the movable plug (91) is provided with a rear end stop screw. A plug (92), a return spring (93) leans against the rear end limit screw plug (92) and the movable plug (91).