Nail gun

Abstract

The utility model relates to the technical field of shoot nail fastening, in particular to a shoot nail gun which comprises a gun body and a percussion assembly, the gun body comprises a gun barrel, a gun handle, a gun sleeve, a percussion head and a reset spring, the gun handle is arranged at the rear end of the gun barrel, the inner diameter of the gun sleeve is smaller than that of the gun barrel, the gun sleeve is inserted into a front port of the gun barrel, and the percussion head is arranged at the front end of the gun sleeve. The reset spring is arranged in the gun barrel, the percussion assembly comprises a percussion sleeve, a percussion bottom barrel, a percussion needle, a percussion spring, a brake pin and a brake spring, the percussion bottom barrel is arranged in the gun barrel and located at the rear end of the percussion sleeve, the percussion needle is arranged in the percussion sleeve in a penetrating mode, a pin groove is formed in the surface of the percussion needle, and the brake pin is arranged in the pin groove; the rear end of the percussion sleeve is provided with a first percussion slope used for applying force to the brake pin, the front end of the percussion bottom cylinder is provided with a second percussion slope used for applying force to the brake pin, and the percussion brake is more stable by arranging the first percussion slope and the second percussion slope and adopting double-slope percussion brake.

Description

Technical Field

[0001] The utility model relates to the technical field of nail fastening, in particular to a nail gun. Background Art

[0002] A nail gun is also called a nail shooter. It is often called a nail gun because of its similar appearance and principle to a pistol. It is a fastening tool that uses blank bullets, gas, compressed air or springs as power to drive nails into the building. The use of nail guns for nail fastening technology is an advanced modern fastening technology. Compared with traditional methods such as pre-embedded fixing, hole pouring, bolt connection, and welding, it has many advantages: it has its own energy source, thus getting rid of the burden of wires and air ducts, and is convenient for on-site and high-altitude operations.

[0003] For example, a Chinese utility model patent with application number 201721797562.9 discloses a nail shooter, specifically an axial nail shooter; it includes a firing assembly and a nail shooter assembly, the firing assembly includes a main sleeve, the main sleeve includes a front sleeve and a rear sleeve, the front sleeve is axially slidably matched with the nail shooter assembly, the inner diameter of the front sleeve is larger than the inner diameter of the rear sleeve and a mounting platform is formed between the two, and a return spring is provided between the nail shooter assembly and the mounting platform; the rear sleeve has a working chamber, the outer wall of the rear sleeve is provided with an annular slag containing groove, at least one firing groove and two oppositely arranged limit grooves are provided on the rear sleeve, and the tail of the firing groove is provided with a firing inclined surface for applying force to the brake pin.

[0004] The above-mentioned nail shooter ensures the cooperation with the brake pin through the design of a single firing bevel, completes the effect of force release, and thus drives the firing pin to generate axial impact force. However, when encountering a harder base surface multiple times, the single bevel is easily damaged by unilateral force, affecting its service life. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A nail gun, comprising a gun body and a firing assembly, wherein the gun body comprises a gun barrel, a gun handle, a holster, a firing head and a return spring, the gun handle is arranged at the rear end of the gun barrel, the inner diameter of the holster is smaller than the inner diameter of the gun barrel, the holster is inserted into the front end of the gun barrel, the firing head is arranged at the front end of the holster, the return spring is arranged in the gun barrel, the return spring abuts against the holster, the firing assembly comprises a firing sleeve, a firing base cylinder, a firing pin, a firing spring, a brake pin and a brake spring, the firing sleeve is arranged in the gun barrel, and its front end extends The firing pin is inserted into the holster, the firing base cylinder is arranged in the gun barrel and is located at the rear end of the firing sleeve, the firing pin is inserted into the firing sleeve, one end of the firing spring abuts against the firing pin, and the other end of the firing spring is inserted into the firing base cylinder, a pin groove is opened on the surface of the firing pin, a brake pin is arranged in the pin groove, the brake spring abuts between the brake pin and the inner wall of the pin groove, the rear end of the firing sleeve is provided with a first firing inclined surface for applying force to the brake pin, and the front end of the firing base cylinder is provided with a second firing inclined surface for applying force to the brake pin.

[0007] As a further solution of the utility model: an annular boss is formed on the outer periphery of the firing sleeve, and a limiting step abutting against the annular boss is formed on the inner wall of the holster.

[0008] As a further solution of the utility model: the firing assembly also includes a limit pin, a limit hole is provided on the surface of the firing pin, a first strip guide groove is provided on the surface of the barrel, a second strip guide groove is provided on the surface of the firing sleeve, and the limit pin passes through the first strip guide groove and the second strip guide groove and enters the limit hole.

[0009] As a further solution of the utility model: the barrel outer sleeve is provided with a sheath for shielding the first strip guide groove.

[0010] As a further solution of the utility model: the firing sleeve includes an inner tube body and an outer tube body, the tube diameter of the inner tube body is smaller than the tube diameter of the outer tube body, a connecting part is formed at the rear end of the inner tube body, the connecting part extends into the outer tube body, and an annular boss is arranged on the surface of the connecting part.

[0011] As a further solution of the utility model: the surface of the connecting part is formed with external threads, and the inner wall of the outer tube is formed with internal threads matching with the external threads.

[0012] As a further solution of the utility model: the firing pin comprises a base body, a firing pin is detachably provided at the front end of the base body, a limiting column is formed at the rear end of the base body, and a firing spring is sleeved on the limiting column.

[0013] As a further solution of the utility model: the firing pin also includes a fixing pin, a slot is provided on the front end face of the base, an insert portion is formed at the rear end of the firing pin, the insert portion is inserted into the slot, a first fixing hole is provided on the insert portion, a second fixing hole communicated with the slot is provided on the surface of the base, and the fixing pin passes through the first fixing hole and is inserted into the second fixing hole.

[0014] As a further solution of the utility model: the cross-sectional shape of the pin groove is T-shaped, the cross-sectional shape of the brake pin matches the cross-sectional shape of the pin groove, the surface of the firing pin is also provided with a mounting hole communicated with the pin groove, a baffle is provided in the mounting hole, one end of the brake spring abuts against the baffle, and the other end of the brake spring abuts against the brake pin.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model sets a first firing bevel and a second firing bevel, and adopts a double-bevel firing brake to make the firing brake easier and more stable, thereby greatly increasing the service life; and the firing sleeve adopts a split structural design, which is convenient for production and processing, and convenient for disassembly and cleaning.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the structure of the utility model.

[0019] Figure 2 It is a cross-sectional view of the utility model.

[0020] Figure 3 It is a schematic diagram of the gun barrel structure of the utility model.

[0021] In the figure: 1, gun barrel, 2, gun handle, 3, holster, 4, firing head, 5, return spring, 6, firing sleeve, 7, firing base tube, 8, firing pin, 9, firing spring, 10, brake pin, 11, brake spring, 12, pin groove, 13, annular boss, 14, limiting step, 15, limiting latch, 16, limiting hole, 17, first strip guide groove, 18, second strip guide groove, 19, sheath, 20, inner tube body, 21, outer tube body, 22, base, 23, firing pin, 24, limiting column, 25, slot, 26, plug-in part, 27, first fixing hole, 28, second fixing hole, 29, fixing pin, 30, mounting hole, 31, baffle, 32, connecting part, 33, first firing inclined surface, 34, second firing inclined surface. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figures 1 to 3 In an embodiment of the utility model, a nail gun includes a gun body and a firing assembly, the gun body includes a barrel 1, a gun handle 2, a holster 3, a firing head 4 and a return spring 5, the gun handle 2 is arranged at the rear end of the barrel 1, the inner diameter of the holster 3 is smaller than the inner diameter of the barrel 1, the holster 3 is inserted into the front end of the barrel 1, the firing head 4 is arranged at the front end of the holster 3, the return spring 5 is arranged in the barrel 1, the return spring 5 abuts against the holster 3, the firing assembly includes a firing sleeve 6, a firing bottom cylinder 7, a firing pin 8, a firing spring 9, a brake pin 10 and a brake spring 11, the firing sleeve 6 is arranged in the barrel 1, and its front end extends into the holster 3, the firing bottom cylinder 7 is arranged in the barrel 1 and is located at the rear end of the firing sleeve 6 The firing pin 8 is inserted into the firing sleeve 6, one end of the firing spring 9 abuts against the firing pin 8, and the other end of the firing spring 9 is inserted into the firing base tube 7. A pin groove 12 is provided on the surface of the firing pin 8, and the brake pin 10 is arranged in the pin groove 12. The brake spring 11 abuts between the brake pin 10 and the inner wall of the pin groove 12. The rear end of the firing sleeve 6 is provided with a first firing bevel 33 for applying force to the brake pin 10, and the front end of the firing base tube 7 is provided with a second firing bevel 34 for applying force to the brake pin 10. By setting the first firing bevel 33 and the second firing bevel 34, the double bevel design is adopted to ensure the cooperation with the brake pin 10, making the firing brake easier and more stable, and extending the service life.

[0024] In order to limit the position of the holster 3 , an annular boss 13 is formed on the outer periphery of the firing sleeve 6 , and a limiting step 14 abutting against the annular boss 13 is formed on the inner wall of the holster 3 .

[0025] In order to play a guiding role and make the firing process more stable, the firing assembly also includes a limit pin 15, a limit hole 16 is provided on the surface of the firing pin 8, a first strip guide groove 17 is provided on the surface of the barrel 1, and a second strip guide groove 18 is provided on the surface of the firing sleeve 6. The limit pin 15 passes through the first strip guide groove 17 and the second strip guide groove 18 and enters the limit hole 16.

[0026] In order to prevent foreign matter from entering, the barrel 1 is provided with a sheath 19 for covering the first strip guide groove 17 .

[0027] In order to facilitate production and processing, and to facilitate disassembly and cleaning, the firing sleeve 6 adopts a split structural design. The firing sleeve 6 includes an inner tube body 20 and an outer tube body 21. The diameter of the inner tube body 20 is smaller than the diameter of the outer tube body 21. A connecting portion 32 is formed at the rear end of the inner tube body 20. The connecting portion 32 extends into the outer tube body 21, and the annular boss 13 is arranged on the surface of the connecting portion 32.

[0028] In order to achieve effective fixation between the inner tube body 20 and the outer tube body 21, the surface of the connecting portion 32 is formed with an external thread, and the inner wall of the outer tube body 21 is formed with an internal thread matching the external thread. The inner tube body 20 and the outer tube body 21 can also be connected by a snap connection.

[0029] In order to facilitate production and processing, and to facilitate disassembly and cleaning, the firing pin 8 also adopts a split structural design. The firing pin 8 includes a base 22, the front end of the base 22 is detachably provided with a firing pin 23, the rear end of the base 22 is formed with a limiting column 24, and the firing spring 9 is sleeved on the limiting column 24.

[0030] In order to achieve effective fixation between the firing pin 23 and the base 22, the firing pin 8 also includes a fixing pin 29. A slot 25 is provided on the front end surface of the base 22, and a plug-in portion 26 is formed at the rear end of the firing pin 23. The plug-in portion 26 is inserted into the slot 25. The plug-in portion 26 is provided with a first fixing hole 27. A second fixing hole 28 communicated with the slot 25 is provided on the surface of the base 22. The fixing pin 29 passes through the first fixing hole 27 and is inserted into the second fixing hole 28.

[0031] In order to limit the brake pin 10 and facilitate the installation of the brake spring 11 and the brake pin 10, the cross-sectional shape of the pin groove 12 is T-shaped, and the cross-sectional shape of the brake pin 10 matches the cross-sectional shape of the pin groove 12. The surface of the firing pin 8 is also provided with a mounting hole 30 that communicates with the pin groove 12. A baffle 31 is provided in the mounting hole 30. One end of the brake spring 11 abuts against the baffle 31, and the other end of the brake spring 11 abuts against the brake pin 10.

[0032] The working principle of the utility model is: put the nail into the firing head 4, and then press the firing head 4 against the construction surface to press the holster 3 into the gun barrel 1, and the firing sleeve 6 is also pressed and moved backward to compress the firing spring 9. When the firing sleeve 6 moves backward to a certain position, the first firing bevel 33 and the second firing bevel 34 apply force to the brake pin 10 to compress the brake pin 10 into the pin groove 12. Under the action of the rebound force of the firing spring 9, the firing pin 8 quickly hits the nail and pushes the nail into the construction surface. After the nail is driven in, the firing head 4 is away from the construction surface, and the holster 3 is reset under the action of the reset spring 5, so that the next nail can be loaded for subsequent nailing work.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A nail gun, characterized in that: include: The gun body includes a gun barrel, a gun handle, a holster, a firing head and a return spring. The gun handle is arranged at the rear end of the gun barrel. The inner diameter of the holster is smaller than the inner diameter of the gun barrel. The holster is inserted into the front end of the gun barrel. The firing head is arranged at the front end of the holster. The return spring is arranged in the gun barrel, and the return spring abuts against the holster. A firing assembly, the firing assembly includes a firing sleeve, a firing base cylinder, a firing pin, a firing spring, a brake pin and a brake spring. The firing sleeve is arranged in the barrel, and its front end extends into the holster. The firing base cylinder is arranged in the barrel and is located at the rear end of the firing sleeve. The firing pin is inserted into the firing sleeve. One end of the firing spring abuts against the firing pin, and the other end of the firing spring is inserted into the firing base cylinder. A pin groove is provided on the surface of the firing pin. The brake pin is arranged in the pin groove. The brake spring abuts between the brake pin and the inner wall of the pin groove. The rear end of the firing sleeve is provided with a first firing inclined surface for applying force to the brake pin, and the front end of the firing base cylinder is provided with a second firing inclined surface for applying force to the brake pin.

2. A nail gun according to claim 1, characterized in that: An annular boss is formed on the outer periphery of the firing sleeve, and a limiting step abutting against the annular boss is formed on the inner wall of the holster.

3. A nail gun according to claim 1, characterized in that: The firing assembly also includes a limit pin, a limit hole is provided on the surface of the firing pin, a first strip guide groove is provided on the surface of the barrel, a second strip guide groove is provided on the surface of the firing sleeve, and the limit pin passes through the first strip guide groove and the second strip guide groove and enters the limit hole.

4. A nail gun according to claim 3, characterized in that: The barrel outer sleeve is provided with a sheath for covering the first strip guide groove.

5. A nail gun according to claim 2, characterized in that: The firing sleeve comprises an inner tube body and an outer tube body. The diameter of the inner tube body is smaller than that of the outer tube body. A connecting part is formed at the rear end of the inner tube body. The connecting part extends into the outer tube body. An annular boss is arranged on the surface of the connecting part.

6. A nail gun according to claim 5, characterized in that: The surface of the connecting part is formed with external threads, and the inner wall of the outer tube is formed with internal threads matching with the external threads.

7. A nail gun according to claim 1, characterized in that: The firing pin comprises a base body, a firing pin is detachably arranged at the front end of the base body, a limiting column is formed at the rear end of the base body, and a firing spring is sleeved on the limiting column.

8. A nail gun according to claim 7, characterized in that: The firing pin also includes a fixing pin. A slot is provided on the front end face of the base. An insert portion is formed on the rear end of the firing pin. The insert portion is inserted into the slot. A first fixing hole is provided on the insert portion. A second fixing hole communicating with the slot is provided on the surface of the base. The fixing pin passes through the first fixing hole and is inserted into the second fixing hole.

9. The nail gun according to claim 1, characterized in that: The cross-sectional shape of the pin groove is T-shaped, and the cross-sectional shape of the brake pin matches the cross-sectional shape of the pin groove. The surface of the firing pin is also provided with a mounting hole communicating with the pin groove, and a baffle is provided in the mounting hole. One end of the brake spring abuts against the baffle, and the other end of the brake spring abuts against the brake pin.

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