CN213034545U

CN213034545U - Firing mechanism and ail shooter with buffer function

Info

Publication number: CN213034545U
Application number: CN202021903861.8U
Authority: CN
Inventors: 蒋川; 张正; 范华
Original assignee: NANXI NANSHAN EQUIPMENT MANUFACTURING CO LTD
Current assignee: NANXI NANSHAN EQUIPMENT MANUFACTURING CO LTD
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-04-23
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a firing mechanism and ail shooter with buffer function relates to and penetrates nail fastening equipment field, including connecting the organism and firing pin subassembly, the firing pin unit mount is in connecting the organism, and firing pin subassembly afterbody still is equipped with buffer structure. The utility model discloses when using, can effectively absorb through buffer structure during the back effort that the firing pin subassembly received, make the impact force that the organism received be connected in the use to the ail shooter reduce greatly, prevent effectively that the ail shooter from producing vibrations in the use, improved the life of connecting the organism, make the nail of penetrating can be accurate jet into in the connecting the organism.

Description

Firing mechanism and ail shooter with buffer function

Technical Field

The utility model relates to a penetrate nail fastening equipment field particularly, relates to a firing mechanism and penetrate nail ware with buffer function.

Background

At present, the integrative nail ail shooter of artifical impacted style has appeared on the existing market, and its structure mainly is direct with firing pin subassembly fixed mounting on connecting the organism, through artifical promotion percussion spring seat, makes firing pin subassembly forward movement relatively to the shooting bullet in the firing transmitting tube, thereby the quick nail of beating into of shooting in the messenger transmitting tube is to building basal body. Although the nail shooter has simple structure and low manufacturing cost, in the actual use process, the impact force generated by the nail shooting bullet in the explosion process is larger, so that the striker component can be subjected to a backward acting force, and the connecting machine body is subjected to stronger impact, so that the connecting machine body is easy to damage; meanwhile, the nail shooter can generate stronger vibration in the using process, so that the shooting nail is easy to incline when being shot into a building matrix, and the wrist of a worker is easy to be damaged in the long-time working process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a firing mechanism with buffer function makes the ail shooter connect the impact force that the organism received in the use and reduces greatly, prevents effectively that the ail shooter from producing vibrations in the use, has improved the life who connects the organism, and makes and shoot the nail can be accurate jet into in the connecting organism.

For realizing the purpose of the utility model, the technical proposal adopted is that: the utility model provides a firing mechanism with buffer function, is including connecting organism and firing pin subassembly, the firing pin subassembly is installed in connecting the organism, and firing pin subassembly afterbody still is equipped with buffer structure.

Furthermore, buffer structure is including installing the damping spring in the connecting body, and hits needle subassembly afterbody and damping spring front end and support tightly.

Furthermore, the buffer structure also comprises a fixed shaft arranged at the tail part of the firing pin assembly; the damping spring is sleeved on the fixed shaft, and the fixed shaft or the connecting machine body is also provided with a limiting component for limiting the striker component to excessively move forwards.

Furthermore, the tail part of the fixed shaft penetrates through the machine body to extend outwards, and the limiting component is an open washer clamped at the extending end of the fixed shaft.

Furthermore, the tail part of the connecting machine body is covered with a connecting base.

Further, the connecting body comprises a sleeve and a step base, the rear end of the sleeve is provided with a limiting flange, the large-diameter end of the step base is inserted into the sleeve, the small-diameter end of the step base is inserted into the limiting flange, and the small-diameter end of the step base is higher than the rear end of the connecting body.

Furthermore, the firing pin component is the combination of the firing pin body and the firing pin, the buffer structure is arranged at the tail part of the firing pin body, and the firing pin body and the firing pin are fixed by a bolt, a welding, a thread, a forced assembly or an integral processing.

Further, the firing pin assembly is an integral firing pin.

A nail shooting device comprises the firing mechanism and a reset spring seat, wherein the reset spring seat is inserted into a connecting machine body, a reset spring for pushing the reset spring seat is further installed in the connecting machine body, and a limiting structure for limiting the reset spring seat to excessively move forwards is further arranged on a firing pin assembly or the connecting machine body.

Furthermore, limit structure is including being located spacing dish on the firing pin subassembly and being located the spacing tang on the spring seat inner wall that resets, and spacing dish and spacing tang cooperation.

Furthermore, a launching tube is further installed at the front end of the return spring seat, and the front end of the firing pin assembly extends into the launching tube.

Furthermore, a plurality of heat dissipation silencing holes are further formed in the transmitting tube, and a silencing cover is arranged on the transmitting tube in a covering mode.

Furthermore, the front end face of the firing pin assembly is also provided with at least one firing salient point, and the surface of the firing salient point is a spherical surface.

Furthermore, the rear end of the return spring seat is also provided with a tail sleeve, and the front end of the return spring is sleeved on the tail sleeve.

The utility model has the advantages that,

the utility model discloses when using, can effectively absorb through buffer structure during the back effort that the firing pin subassembly received, make the impact force that the organism received be connected in the use to the ail shooter reduce greatly, prevent effectively that the ail shooter from producing vibrations in the use, improved the life of connecting the organism, make the nail of penetrating can be accurate jet into in the connecting the organism.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a block diagram of a nail shooter provided by the present invention;

FIG. 2 is a block diagram of the striker pin assembly of FIG. 1;

fig. 3 is a block diagram of the split washer of fig. 1.

Reference numbers and corresponding part names in the drawings:

1. the device comprises a transmitting tube, 2, a silencing cover, 3, a firing pin, 4, a return spring seat, 5, a return spring, 6, a connecting machine body, 7, a firing pin body, 8, a connecting base, 9, a limiting disc, 10, a limiting spigot, 11, a heat dissipation silencing hole, 12, a firing salient point, 13, a tail sleeve, 14, a fixing shaft, 15, a damping spring, 16 and an opening gasket;

61. sleeve, 62, step base.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention. It should be noted that, for convenience of description, only the parts related to the present invention are shown in the drawings.

Example 1

As shown in fig. 1, fig. 2, fig. 3, the utility model provides a pair of firing mechanism with buffer function, including connecting organism 6 and firing pin subassembly, the central axis of firing pin subassembly is on same straight line with the central axis of being connected organism 6, and the firing pin unit mount is in connecting organism 6, firing pin subassembly afterbody still is equipped with buffer structure, make the buffer structure that the firing pin subassembly passes through firing pin subassembly afterbody install in connecting organism 6, can effectively absorb through buffer structure during the back effort that makes the firing pin subassembly receive, the impact force that makes the ail shooter connect organism 6 and receive in the use reduces greatly, effectively prevent the ail shooter from producing vibrations in the use, the life of connecting organism 6 has been improved, make the accurate shooting of nail ability connect in the organism 6.

Buffer structure is including installing damping spring 5 in connecting organism 6, and firing pin subassembly afterbody supports tightly with damping spring 5 front end, makes the firing pin subassembly with integral type ail shooter percussion back, the power that produces behind the integral type ail shooter explosion is back on using the firing pin subassembly, the firing pin subassembly can cushion through damping spring 15 when the backset, thereby effectively prevent that the recoil that the firing pin subassembly received from directly using on connecting organism 6, avoid connecting organism 6 and receive the damage.

Because the shock absorbing spring 15 is compressed when the firing pin assembly moves backwards under the power generated by the explosion of the integrated nail shooting bullet, when the shock absorbing spring 15 is completely compressed, the self elastic force of the shock absorbing spring 15 can push the firing pin assembly to move forwards and reset, in order to avoid the excessive movement of the firing pin assembly when the firing pin assembly moves forwards, the tail part of the firing pin assembly is also provided with the fixed shaft 14, the central axis of the fixed shaft 14 and the central axis of the firing pin assembly are on the same straight line, the diameter of the fixed shaft 14 is smaller than that of the tail part of the firing pin assembly, so that a step structure is formed at the joint of the fixed shaft 14 and the firing pin assembly, at the moment, the shock absorbing spring 15 is sleeved on the fixed shaft 14, the front end of the shock absorbing spring 15 can directly abut against the tail part of the firing pin assembly, the rear end of the shock absorbing spring 15 abuts against the inner wall of the connecting machine body 6, and the fixed shaft 14, the damping spring 15 is prevented from being excessively advanced when the striker assembly is pushed to move forward by its own elastic force.

The firing pin component and the fixed shaft 14 can be fixed by adopting threads, screws, pins, welding and the like, or the firing pin component and the fixed shaft 14 are directly arranged into an integral structure; when the firing pin assembly is an integral firing pin structure and the firing pin assembly and the fixed shaft 14 are an integral structure, the firing pin assembly and the fixed shaft 14 form an integral three-section step shaft structure.

The tail of the fixed shaft 14 penetrates through the connecting machine body 6 to extend outwards, the fixed shaft 14 can move back and forth relative to the connecting machine body 6, in order to limit the counterforce of the damping spring 15 to push the striker assembly to move forwards excessively, the limiting assembly can be directly arranged to be clamped on the opening gasket 16 at the extending end of the fixed shaft 14, namely, an annular groove is formed in the extending end of the fixed shaft 14, the opening gasket 16 is clamped in the annular groove through an opening of the opening gasket 16, so that the opening gasket 16 is rapidly installed on the fixed shaft 14, and after the opening gasket 16 is installed on the fixed shaft 14, the opening gasket 16 cannot fall off from the fixed shaft 14.

The limit component can also be directly set into a limit nut fixed at the extending end of the fixed shaft 14, the limit nut and the extending end of the fixed shaft 14 can be fixed in a threaded connection mode, a welding mode, a screw mode and the like, the limit nut is mainly used for preventing the fixed shaft 14 from falling off from the connecting machine body 6 when the damping spring 15 pushes the fixed shaft 14 (namely, the firing pin component) to advance through self elasticity, and in order to reduce the impact force of the limit nut on the connecting machine body 6, a buffer gasket can be installed on one surface, close to the connecting machine body 6, of the limit nut.

The tail of the connecting machine body 6 is covered with a connecting base 8, so that the rear end of the fixed shaft 14 is covered and sealed, and the fixed shaft 14 is effectively prevented from injuring workers due to the integral nail shooting bomb during explosion. The connecting body 6 and the connecting base 8 are fixed in one of a threaded fixing mode, a welding fixing mode and a forced assembling mode.

The firing pin subassembly is for the combination of firing pin body 7 and firing pin 3, and the firing pin body 7 is installed in connecting organism 6, the firing pin body 7 diameter is greater than the firing pin 3 diameter, and the firing pin 3 is installed in connecting organism 6 through the firing pin body 7, makes the installation of firing pin body 7 more firm, and makes the axiality of firing pin 3 and launching tube 1 more accurate, effectively prevents that firing pin 3 from producing because of the overlength leads to the swing.

In order to reduce the shaking of the striker body 7 and ensure that the striker body 7 is more stably installed, a seat hole can be installed in the connecting machine body 6, and the tail part of the striker body 7 is fixedly installed in the seat hole; when the striker body 7 is not adopted, the tail part of the striker component can be directly and fixedly arranged in the seat hole.

The fixing mode of hitting the needle body 7 and hitting the needle 3 is bolt fastening, welded fastening, thread tightening, force assembly or integrated into one piece machine-shaping, makes the installation of hitting the needle body 7 and hitting the needle 3 more firm, avoids hitting the needle 3 and rocks, makes hitting the needle 3 can be to the accurate percussion of integrative nail.

The firing pin component in the embodiment can also be an integral firing pin, when the firing pin component is the integral firing pin, the rear end of the integral firing pin can be directly installed in the connecting machine body 6, at the moment, the limiting disc 9 can be directly installed in the integral firing pin, and the limiting disc 9 and the integral firing pin are arranged into an integral structure; meanwhile, the fixed shaft 14 is directly installed at the tail part of the integral firing pin, at this time, the central axis of the fixed shaft 14 and the central axis of the integral firing pin are on the same straight line, the diameter of the fixed shaft 14 is smaller than that of the tail part of the integral firing pin, one end of the damping spring 15 abuts against the tail part of the integral firing pin, and the other end of the damping spring 15 abuts against the inner wall of the connecting machine body 6. The fixed shaft 14 may be formed to have a diameter identical to that of the tail of the integral firing pin, and when the fixed shaft 14 is formed to have a diameter identical to that of the tail of the integral firing pin, a limit step or a disk may be formed at the tail of the integral firing pin or at the front end of the fixed shaft 14, so that the front end of the damping spring 15 is limited.

The diameter of the fixed shaft 14 in this embodiment can also be directly equal to the diameter of the tail of the striker assembly, at this time, a limit boss can be directly arranged on the fixed shaft 14, and a snap ring matched with the limit step is arranged on the inner wall of the connecting body 6, so that the front end of the damping spring 15 is directly abutted against the rear end face of the limit boss, the rear end of the return spring 5 is abutted against the front end face of the snap ring, and the return spring 5 and the return spring seat 4 can be normally used while the striker assembly is prevented from excessively moving forwards due to the reaction force of the damping spring 15.

The buffer structure in the embodiment can also be directly set into a shock absorption seat, the shock absorption seat can be directly made of rubber, the shock absorption seat and the firing pin assembly are jointly fixed in the connecting machine body 6 by adopting screws, and the diameter of the shock absorption seat can be equal to that of the firing pin body 7; when the firing pin component is fixed in a threaded manner, the shock absorption seat can be directly placed in a threaded seat hole on the connecting machine body 6, and the firing pin body 7 is screwed down to enable the shock absorption seat to be tightly pressed in the threaded seat hole and tightly abut against the tail part of the firing pin body 7; when the striker body 7 is fixed by welding or forcibly assembled, a seat hole can be formed on the connecting body 6, the shock-absorbing seat is installed in the seat hole, and the tail of the striker body 7 is assembled in the seat hole by welding or forcibly.

Through at the installation cushion socket, make integrative nail in launch tube 1 when the explosion, the explosive force that integrative nail produced is after transmitting for striker 3, striker 3 can transmit for the cushion socket through striker body 7 to the recoil that the explosion produced carries out partly absorption, reduces the harm to striker 3 and striker body.

Example 2

This embodiment 2 provides a percussion mechanism with a buffer function on the basis of embodiment 1, in which the connecting body 6 includes a sleeve 61 and a step base 62, the rear end of the sleeve 61 has a limit flange, the large diameter end of the step base 62 is inserted into the sleeve 61, the small diameter end of the step base 62 is inserted into the limit flange, and the small diameter end of the step base 62 is higher than the rear end of the sleeve 61, the step base 62 cannot fall off from the rear end of the sleeve 61 by the step surface on the step base 62 cooperating with the limit flange, and the step base 62 can generate a forward displacement in the sleeve 61, so that after the open gasket 16 strikes the step base 62, the step base 62 can effectively absorb shock by the shock absorbing spring 15, not only can reduce the impact force on the step base 62, but also when the step base 62 moves forward, the step base 62 transmits the acting force to the return spring seat 4 through the shock absorbing spring 15, the reset spring seat 4 drives the launching tube 1 to advance rapidly, so that the firing pin assembly and the launching tube 1 generate relative displacement, and the residue of the nail shooting bullet in the launching tube 1 can be effectively pushed out.

Example 3

This embodiment 3 provides a nail shooter on the basis of embodiment 1 or embodiment 3, where the nail shooter includes the firing mechanism in embodiment 1, and further includes a return spring seat 4, a central axis of the return spring seat 4 and a central axis of the connecting body 6 are maintained on the same straight line, the return spring seat 4 is inserted into the connecting body 6, the return spring seat 4 and the connecting body 6 are coaxially disposed, and an outer wall of the return spring seat 4 is in clearance fit with an inner wall of the connecting body 6, so that the return spring seat 4 can relatively move in the connecting body 6, and the firing pin assembly can move forward or backward relative to the return spring seat 4.

A reset spring 5 for pushing the reset spring seat 4 is further installed in the connecting machine body 6, the reset spring 5 can push the reset spring seat 4 to reset through the elasticity of the reset spring 5, a limiting structure for limiting the reset spring seat 4 to move forwards excessively is further arranged on the firing pin assembly or the connecting machine body 6, and the limiting structure is mainly used for preventing the reset spring seat 4 and the connecting machine body 6 from falling off in the using process of the nail shooter; meanwhile, the reset spring seat 4 can be effectively prevented from being directly moved out of the connecting machine body 6 when the reset spring 5 pushes the reset spring seat 4 to reset.

The limiting structure comprises a limiting disc 9 positioned on the firing pin assembly and a limiting spigot 10 positioned on the inner wall of the reset spring seat 5, and the limiting disc 9 is matched with the limiting spigot 5; spacing dish 9 and firing pin body 7 structure as an organic whole, spacing dish 9 is located reset spring seat 4, 5 internal diameters of reset spring seat and the sliding fit of 9 diameters of spacing dish, when making the firing pin subassembly remove in the front and back, accessible spacing dish 9 and the cooperation of reset spring seat 5, make firing pin body 7 and reset spring seat 5 keep the axiality, firing pin 3 keeps the axiality with launch tube 1, can not only make the integral type in the launch tube 1 penetrate the nail bullet and can be by accurate percussion, and prevent effectively that firing pin 3 from rocking and launch tube 1 receives the damage because of the production when removing in the front and back.

The inner wall of the reset spring seat 4 is provided with a limit spigot 10 matched with the limit disc 9, and the striker body 7 is fixedly mounted, so that when the reset spring 5 pushes the reset spring seat 4 to move forwards, and when the limit spigot 10 on the inner wall of the reset spring seat 4 advances to the limit disc 9, the reset spring seat 4 cannot continue to move forwards through the matching of the limit spigot 10 and the limit disc 9, and the limit of the reset spring seat 4 is realized.

The front end of the reset spring seat 4 is also provided with a transmitting tube 1, the transmitting tube 1 is fixedly connected with the reset spring seat 4 through threads, and the front end of the firing pin 3 extends into the transmitting tube 1; the transmitting tube 1 is also provided with a plurality of radiating silencing holes 11, the upper cover of the transmitting tube 1 is provided with a silencing cover 2, and the radiating silencing holes 11 are communicated with the interior of the silencing cover 2 to play a role in radiating and silencing the transmitting tube 1; in order to facilitate the installation of the silencing cover 2, a sealing disc can be arranged on the transmitting tube 1, the rear end of the silencing cover 2 is tightly abutted against the sealing disc, and the front end of the silencing cover 2 is fixed with the transmitting tube 1 through threads, so that the fixed installation of the silencing cover 2 is realized, a closed silencing cavity is formed between the silencing cover 2 and the transmitting tube 1 after the silencing cover 2 is installed on the transmitting tube 1, and the silencing effect is achieved.

The front end surface of the firing pin component is also provided with at least one firing salient point 12, and the position of each firing salient point 12 can be arranged according to the characteristics of the integrated nail; the 12 surfaces of the trigger salient points are spherical surfaces, and the existing integrated nails are triggered at the edges, so that when the trigger salient points 12 do not reach a certain trigger force, the trigger salient points 12 cannot trigger the integrated nails, the nail shooter is prevented from being triggered by children or automatically triggered after falling on the ground, and the nail shooter is safer when in use.

The rear end of the reset spring seat 4 is also provided with a tail sleeve 13, the tail sleeve 13 and the reset spring seat 4 are of an integral structure, and the inner diameter of the tail sleeve 13 is in clearance fit with the diameter of the firing pin body 7, so that when the reset spring seat 4 moves in the connecting machine body 6, the rear end of the reset spring seat 4 can be guided through the fit of the tail sleeve 13 and the firing pin body 7, and the coaxiality of the reset spring seat 4 and the connecting machine body 6 is ensured; meanwhile, the tail sleeve 13 is arranged, so that a step is formed between the tail sleeve 13 and the reset spring seat 4, the reset spring 5 is convenient to support, the front end of the reset spring 5 is sleeved on the tail sleeve 13, the front end of a pad of the reset spring 5 can be limited, and the use of the reset spring 5 is guaranteed.

When construction is needed, firstly putting the integrated nail shooting bullet into the launching tube 1, then abutting the front end of the launching tube 1 against a building to be constructed, applying a certain pressure to the nail shooter to enable the reset spring seat 4 and the launching tube 1 to move towards the connecting machine body 6, compressing the reset spring 5, moving the firing pin 3 forwards relative to the launching tube 1, continuously applying a pressure when the firing pin 2 abuts against the integrated nail shooting bullet, firing the integrated nail shooting bullet by the firing salient point 12 at the front end of the firing pin 2, exploding the integrated nail shooting bullet, and rapidly shooting the nail on the integrated nail shooting bullet into the building substrate; meanwhile, the integral nail shooting bullet is triggered, the pressure applied to the nail shooting device is cancelled, and the reset spring 5 pushes the reset spring seat 4 to reset through the elasticity of the reset spring.

When the integrated nail shooting bullet explodes, the explosion force generated when the integrated nail shooting bullet explodes pushes the firing pin 3 to retreat, the fixed shaft 14 moves backwards when the firing pin 3 retreats, and at the moment, the damping spring 15 is compressed, so that the firing pin 3 receives a certain buffer force when retreating; when the damping spring 15 is completely compressed, the damping spring 15 pushes the firing pin 3 forward by its own elastic force, so that the firing pin 3 is reset, and when the firing pin 3 is reset, the firing pin 3 pushes the cartridge case remaining in the firing tube 1 after explosion out of the firing tube 1.

The limiting structure in this embodiment may further include a limiting ring disposed at the front end of the connecting body 6, and a limiting inner ring disposed at the rear end of the return spring seat 4, so that the return spring seat 4 is limited when moving forward by the cooperation of the limiting ring and the limiting inner ring.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a firing mechanism with buffer function, its characterized in that, is including connecting organism (6) and firing pin subassembly, the firing pin subassembly is installed in connecting organism (6), and firing pin subassembly afterbody still is equipped with buffer structure.

2. The percussion mechanism with buffering function according to claim 1, wherein the buffering structure comprises a shock-absorbing spring (15) installed in the connecting body, and the tail of the striker assembly abuts against the front end of the shock-absorbing spring (15).

3. The percussion mechanism with cushioning function according to claim 2, wherein the cushioning structure further comprises a fixed shaft (14) disposed at the tail of the striker rod assembly; the damping spring (15) is sleeved on the fixed shaft, and the fixed shaft (14) or the connecting machine body (6) is further provided with a limiting component for limiting the striker component to move forwards excessively.

4. The percussion mechanism with buffering function as claimed in claim 3, wherein the tail of the fixed shaft (14) extends outwards through the connecting body (6), and the limiting component is an open washer (16) clamped at the extending end of the fixed shaft (14).

5. The percussion mechanism with buffering function as claimed in claim 1, wherein the tail of the connecting body (6) is further covered with a connecting base (8).

6. The firing mechanism with the buffering function according to claim 1, wherein the firing pin component is a combination of a firing pin body (7) and a firing pin (3), the firing pin body (7) is installed in the connecting body (6), and the firing pin body (7) and the firing pin (3) are fixed by means of bolt fixing, welding fixing, thread fixing, forced assembly or integral processing.

7. The percussion mechanism with cushioning of claim 1, wherein the firing pin assembly is an integral firing pin.

8. The percussion mechanism with buffering function as claimed in claim 1, wherein the connecting body (6) comprises a sleeve (61) and a step base (62), the rear end of the sleeve (61) has a limit flange, the large diameter end of the step base (62) is inserted into the sleeve (61), the small diameter end of the step base (62) is inserted into the limit flange, and the small diameter end of the step base (62) is higher than the rear end of the connecting body (6).

9. A nail shooter, characterized by comprising the firing mechanism of any one of the above claims 1 to 8, and further comprising a return spring seat (4), wherein the return spring seat (4) is inserted into the connecting body (6), a return spring (5) for pushing the return spring seat (4) is further installed in the connecting body (6), and a limit structure for limiting the excessive forward movement of the return spring seat (4) is further arranged on the firing pin assembly or on the connecting body (6).

10. The nailing device according to claim 9, wherein the limiting structure comprises a limiting disc (9) on the firing pin assembly and a limiting spigot (10) on the inner wall of the return spring seat (4), and the limiting spigot (10) is matched with the limiting disc (9).

11. The nailing device according to claim 9, characterized in that the front end of the return spring seat (4) is also provided with a launching tube (1), and the front end of the firing pin assembly extends into the launching tube (1); the transmitting tube (1) is further provided with a plurality of heat dissipation silencing holes (11), and the transmitting tube (1) is covered with a silencing cover (2).

12. The nailer of claim 9, wherein said firing pin assembly further includes at least one firing lobe (12) on a front face thereof, and wherein a surface of said firing lobe (12) is spherical.

13. The nailing device according to claim 9, characterized in that the rear end of the return spring seat (4) is further provided with a tail sleeve (13), and the front end of the return spring (5) is sleeved on the tail sleeve (13).