Air nail gun and noise reduction structure thereof

Abstract

The utility model relates to the technical field of air nail guns, in particular to an air nail gun and a silencing structure thereof, which comprise a silencer rear cover, a silencer support plate, silencing cotton and a silencer cover plate, the silencer rear cover is arranged at the rear end of a traveling valve of the air nail gun, a mounting groove is formed in the silencer rear cover, an exhaust groove is formed in the bottom of the mounting groove, an exhaust hole is formed in the outer side of the silencer rear cover, and the exhaust hole is communicated with the exhaust groove. The silencer supporting plate is arranged in the installation groove, a silencing cotton installation groove is formed in the silencer supporting plate, the silencing cotton is arranged in the silencing cotton installation groove, and the silencer cover plate is arranged on the side face, close to the traveling valve, of the silencing cotton. The silencer supporting plate and the silencer cover plate are provided with a plurality of dispersing air holes. The air nail gun can effectively solve the problem of noise generated when the air nail gun is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to air nail gun technical field especially relates to a kind of air nail gun and its sound attenuation structure. BACKGROUND

[0002] Air nail gun is a kind of engineering building class handheld tool by using high-pressure gas as power to drive metal nail.

[0003] The gas in the needle cavity of air nail gun in prior art flows from the exhaust port of the floating valve to the aluminum top cover of air nail gun during the process of needle reset after firing, and is exhausted from the exhaust port of the aluminum top cover. Since the gas pressure of the gas in the needle cavity is high, and is discharged from the exhaust port of the floating valve, it will cause the air nail gun to produce loud noise during use, and cause noise pollution to the surrounding environment. SUMMARY

[0004] The utility model aims at overcoming the insufficient of prior art, and provides a kind of air nail gun and its sound attenuation structure, which is simple in structure, easy to assemble and can effectively reduce the noise of air nail gun during use.

[0005] To solve the above problems, the utility model provides a kind of sound attenuation structure of air nail gun, including silencer back cover, silencer supporting plate, sound attenuation cotton and silencer cover plate;

[0006] The silencer back cover is arranged at the rear end of the floating valve of the air nail gun, the mounting groove is arranged on the silencer back cover, the exhaust groove is arranged at the bottom of the mounting groove, the exhaust hole is arranged on the outer side of the silencer back cover, and the exhaust hole is communicated with the exhaust groove.

[0007] The silencer supporting plate is arranged in the mounting groove, the sound attenuation cotton mounting groove is arranged on the silencer supporting plate, the sound attenuation cotton is arranged in the sound attenuation cotton mounting groove, and the silencer cover plate is arranged on the side surface of the sound attenuation cotton close to the floating valve. The silencer supporting plate and the silencer cover plate are provided with a plurality of dispersion holes.

[0008] As an improvement of the above technical scheme, the central part of the bottom of the mounting groove is provided with an abutting portion, the exhaust groove is arranged along the outer periphery of the abutting portion, and the reset spring of the floating valve abuts against the abutting portion.

[0009] As an improvement of the above technical scheme, the sound attenuation filter screen is further included.

[0010] The filter screen mounting groove is arranged between the bottom of the mounting groove and the exhaust groove, the filter screen mounting groove is communicated with the mounting groove and the exhaust groove respectively, the sound attenuation filter screen is arranged in the filter screen mounting groove, and has a predetermined distance with the silencer supporting plate.

[0011] As the improvement of the above technical scheme, the muffler supporting plate comprises a supporting plate body, the outer periphery of the supporting plate body is provided with a plurality of clamping plates bent towards the floating valve, the clamping plates have a predetermined spacing, the inner walls of the plurality of clamping plates and the surface of the supporting plate body form the sound-absorbing cotton mounting groove, and the sound-absorbing cotton is arranged in the sound-absorbing cotton mounting groove.

[0012] As the improvement of the above technical scheme, the diameter of the dispersed air holes is 0.8-1.3 mm.

[0013] As the improvement of the above technical scheme, the thickness of the muffler supporting plate and the muffler cover plate is 0.5-1.2 mm.

[0014] As the improvement of the above technical scheme, the sound-absorbing cotton is polyester fiber soundproof cotton.

[0015] Correspondingly, the utility model also provides a pneumatic nail gun which comprises the sound-absorbing structure as the above technical scheme.

[0016] The utility model has the following beneficial effects:

[0017] The utility model discloses an integrated sound-absorbing structure at the aluminum top cover of the pneumatic nail gun, which comprises a muffler rear cover, a muffler supporting plate, sound-absorbing cotton and a muffler cover plate. The muffler rear cover is arranged at the rear end of the floating valve of the pneumatic nail gun. The muffler rear cover is provided with a mounting groove. The muffler supporting plate, the sound-absorbing cotton and the muffler cover plate are sequentially arranged between the mounting groove and the floating valve. When the pneumatic nail gun is in the needle reset state, the gas delivery hole of the floating valve is communicated with the trigger cylinder of the pneumatic nail gun. The high-pressure gas flows from the gas delivery hole to the mounting groove. The muffler supporting plate and the muffler cover plate of the mounting groove are provided with a plurality of dispersed air holes. The density of the gas can be dispersed when the gas passes through the air holes, thereby reducing the noise of the gas exhaust. The exhaust noise after being reduced is absorbed by the sound-absorbing cotton, thereby realizing the sound-absorbing effect. The overall structure of the sound-absorbing structure is simple and easy to assemble, and the noise problem of the pneumatic nail gun during operation can be solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the sectional view of the pneumatic nail gun of one embodiment of the utility model;

[0019] Figure 2 is Figure 1 the enlarged view of A in

[0020] Figure 3 is the perspective view of the muffler supporting plate of one embodiment of the utility model;

[0021] Figure 4 is the perspective view of the muffler cover plate of one embodiment of the utility model;

[0022] Figure 5is the front view of the rear cover of the sound damper of the utility model one embodiment;

[0023] Figure 6 is Figure 5 the cross-sectional view of A-A. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model will be described further in detail below in conjunction with the drawings.

[0025] Referring to Figures 1 to 5 The utility model embodiment provides a sound damper structure of pneumatic nail gun, including sound damper rear cover 1, sound damper support plate 2, sound absorbing cotton 3 and sound damper cover plate 4.

[0026] The utility model embodiment improves the structure of the aluminum top cover of the pneumatic nail gun, so that the pneumatic nail gun has a sound damper structure.

[0027] Specifically, the sound damper rear cover 1 is arranged at the rear end of the traveling valve 1' of the pneumatic nail gun, the sound damper rear cover 1 is provided with a mounting groove 11, the bottom of the mounting groove 11 is provided with an exhaust groove 12, the outer side of the sound damper rear cover 1 is provided with an exhaust hole 13, the exhaust hole 13 is communicated with the exhaust groove 12.

[0028] The sound damper support plate 2 is arranged in the mounting groove 11, the sound damper support plate 2 is provided with a sound absorbing cotton mounting groove 23, the sound absorbing cotton 3 is arranged in the sound absorbing cotton mounting groove 23, the side surface of the sound absorbing cotton 3 close to the traveling valve 1' is provided with the sound damper cover plate 4, wherein the sound damper support plate 2 and the sound damper cover plate 4 are provided with a plurality of dispersion holes 6.

[0029] The utility model integrates the sound damper structure at the aluminum top cover of the pneumatic nail gun, the sound damper structure includes sound damper rear cover 1, sound damper support plate 2, sound absorbing cotton 3 and sound damper cover plate 4, the sound damper rear cover 1 is arranged at the rear end of the traveling valve 1' of the pneumatic nail gun, the sound damper rear cover 1 is provided with a mounting groove 11, and the sound damper support plate 2, the sound absorbing cotton 3 and the sound damper cover plate 4 are sequentially arranged between the mounting groove 11 and the traveling valve 1'. When the pneumatic nail gun is in the needle reset state, the gas inlet of the traveling valve 1' is communicated with the trigger cylinder of the pneumatic nail gun, the high-pressure gas flows from the gas inlet to the mounting groove 11, the sound damper support plate 2 and the sound damper cover plate 4 on the mounting groove 11 are provided with a plurality of dispersion holes 6, the gas can disperse the density of the gas when passing through, thereby reducing the noise of the gas exhaust, and the sound absorbing cotton 3 can absorb the reduced exhaust noise, finally realizing the effect of sound reduction. The overall structure of the sound damper structure is simple and easy to assemble, and can solve the noise problem of the pneumatic nail gun during operation.

[0030] Preferably, the bottom of the mounting groove 11 is centrally provided with an abutting portion 15, the exhaust groove 11 is arranged along the outer periphery of the abutting portion 15, and the reset spring of the floating valve 1' abuts against the abutting portion 15. The muffler supporting plate 2, the sound-absorbing cotton 3 and the muffler cover plate 4 are all annular structures to match the structure of the mounting groove 11, and the muffler supporting plate 2, the sound-absorbing cotton 3 and the muffler cover plate 4 are sequentially sleeved on the abutting portion.

[0031] More preferably, the sound-absorbing filter screen 5 is further included.

[0032] The bottom of the mounting groove 11 is further provided with a filter screen mounting groove 14 which is in communication with the mounting groove 11 and the exhaust groove 12 respectively, the sound-absorbing filter screen 5 is arranged in the filter screen mounting groove 14 and has a predetermined spacing with the muffler supporting plate 2. The sound-absorbing filter screen 5 can further disperse the density of the exhaust gas and further eliminate the noise of the air nail gun.

[0033] More preferably, the muffler supporting plate 2 comprises a supporting plate body 21, the outer periphery of the supporting plate body 21 is provided with a plurality of clamping plates 22 which are bent towards the floating valve 1', the clamping plates 22 have a predetermined spacing, the inner walls of the plurality of clamping plates 22 and the surface of the supporting plate body 21 form the sound-absorbing cotton mounting groove 23, and the sound-absorbing cotton 3 is arranged in the sound-absorbing cotton mounting groove 23. Due to the characteristics of the sound-absorbing cotton 3, the clamping plates 22 are arranged to clamp the sound-absorbing cotton 3 in the muffler supporting plate 2, and the surface close to the floating valve 1' is provided with the muffler cover plate 2, so that the sound-absorbing cotton 3 can be effectively prevented from being scattered in the muffler structure to cause the air hole to be blocked.

[0034] Preferably, the diameter of the dispersion air hole 6 is 0.8-1.3mm. The diameter of the dispersion air hole 6 cannot be too large or too small. Preferably, the diameter of the dispersion air hole is 1.0mm.

[0035] Preferably, the thickness of the muffler supporting plate 2 and the muffler cover plate 4 is 0.5-1.2mm. Preferably, the thickness of the muffler supporting plate 2 and the muffler cover plate 4 is 0.8mm.

[0036] Preferably, the sound-absorbing cotton 2 is polyester fiber sound-absorbing cotton.

[0037] Correspondingly, the utility model also provides an air nail gun which comprises the sound-absorbing structure.

[0038] The above is the preferred embodiment of the utility model, and it should be pointed out that, for the ordinary skilled in the art, without departing from the principle of the utility model, a plurality of improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. A silencer structure for a pneumatic nail gun, characterized in that: Including muffler rear cover, muffler support plate, muffler cotton and muffler cover; The muffler rear cover is arranged at the rear end of the traveling valve of the air nail gun, the muffler rear cover is provided with a mounting groove, the bottom of the mounting groove is provided with an exhaust groove, the outer side of the muffler rear cover is provided with an exhaust hole, and the exhaust hole is communicated with the exhaust groove; The silencer support plate is arranged in the installation groove, the silencer support plate is provided with a silencer cotton installation groove, the silencer cotton is arranged in the silencer cotton installation groove, and the silencer cover plate is provided on a side of the silencer cotton close to the floating valve; wherein, the silencer support plate and the silencer cover plate are provided with a plurality of dispersed air holes.

2. The sound-absorbing structure according to claim 1, wherein: An abutment portion is provided at the center of the bottom of the installation groove, the exhaust groove is provided along the outer periphery of the abutment portion, and the return spring of the floating valve abuts against the abutment portion.

3. The sound-absorbing structure according to claim 1 or 2, characterized in that: Also includes a sound-absorbing filter screen; A filter screen installation groove is also provided between the bottom of the installation groove and the exhaust groove. The filter screen installation groove is communicated with the installation groove and the exhaust groove respectively. The silencer filter screen is provided in the filter screen installation groove and has a predetermined distance from the muffler support plate.

4. The sound-absorbing structure according to claim 1, wherein: The silencer support plate includes a support plate body, and a plurality of clamping plates bent toward the floating valve are provided on the outer periphery of the support plate body, with a predetermined spacing between the clamping plates. The inner walls of the plurality of clamping plates and the surface of the support plate body form the silencer cotton installation groove, and the silencer cotton is arranged in the silencer cotton installation groove.

5. The sound-absorbing structure according to claim 1, wherein: The diameter of the dispersed pores is 0.8-1.3 mm.

6. The sound absorbing structure according to claim 1, wherein: The thickness of the muffler supporting plate and the muffler cover plate is 0.5-1.2 mm.

7. The sound absorbing structure according to claim 1, wherein: The sound-absorbing cotton is polyester fiber sound-absorbing cotton.

8. A pneumatic nail gun, characterized in that: The utility model comprises the sound-absorbing structure according to any one of claims 1 to 7.

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