Low-noise pistol air-cut type constant-torque pneumatic tool

Abstract

The utility model discloses a low-noise gun air-cut-off type constant-torque pneumatic tool which comprises a gun air-cut-off type screwdriver, a sound insulation assembly and a silencing assembly. The air inlet and the air outlet are formed in the two sides of the bottom of the gun air-cut-off type screwdriver. According to the low-noise gun air cut-off type constant-twist pneumatic tool, the first-stage sound insulation sleeve, the second-stage sound insulation sleeve and the third-stage sound insulation sleeve which are arranged at the outer end of the gun air cut-off type screwdriver in a sleeving mode can conduct sound insulation on parts in a machine body of the gun air cut-off type screwdriver in the working process through sound insulation cotton at the inner ends of the first-stage sound insulation sleeve, the second-stage sound insulation sleeve and the third-stage sound insulation sleeve; the first-level sound insulation sleeve, the second-level sound insulation sleeve and the third-level sound insulation sleeve and the first sealing ring and the second sealing ring which are installed on the two sides of the inner ends of the first-level sound insulation sleeve, the second-level sound insulation sleeve and the third-level sound insulation sleeve can also conduct waterproof protection on the sound insulation cotton at the inner ends, and then the sound insulation effect is prevented from being affected after the sound insulation cotton is moist.

Description

TECHNICAL FIELD

[0001] The utility model relates to hand gun type screwdriver technical field, concretely is a low noise's hand gun air cut off type fixed twist pneumatic tool. BACKGROUND

[0002] Hand gun air cut off type fixed twist pneumatic tool refers to a kind of hand gun air cut off type pneumatic screwdriver, hand gun air cut off type pneumatic screwdriver is a kind of pneumatic tool combined with excellent engineering design, mainly used for screwing or loosening screw cap etc. operation, hand gun air cut off type pneumatic screwdriver adopts ergonomic design, so that operation is more comfortable, reduces fatigue feeling brought by long time use, the tool is equipped with air cut off clutch, can automatically disconnect gas source when reaching preset torque, prevent over-tightening, protect screw and workpiece from being damaged.

[0003] The existing hand gun air cut off type pneumatic screwdriver in use, the noise in the use of pneumatic screwdriver is too large due to internal mechanical vibration and exhaust noise, and the outer end of pneumatic screwdriver is not convenient and stable to install sound insulation silencing device, thereby being prone to affect the hearing of staff due to noise, therefore, we propose a low noise hand gun air cut off type fixed twist pneumatic tool. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems existing in prior art or related art.

[0005] Therefore, the technical scheme adopted by the utility model is as follows:

[0006] A low noise hand gun air cut off type fixed twist pneumatic tool, including: hand gun air cut off type screwdriver, sound insulation component, silencing component;Hand gun air cut off type screwdriver includes the air inlet and exhaust port installed on the both sides of its bottom;Sound insulation component includes the first sound insulation sleeve, second sound insulation sleeve and third sound insulation sleeve movably arranged and installed on the outer end of hand gun air cut off type screwdriver, the sound insulation cotton fixedly installed in the inner end of first sound insulation sleeve, second sound insulation sleeve and third sound insulation sleeve, the first sealing ring and second sealing ring fixedly installed on the both sides of the inner end of first sound insulation sleeve, second sound insulation sleeve and third sound insulation sleeve;Silencing component includes the silencing cylinder movably arranged and installed on the bottom of exhaust port, the soundproof sleeve fixedly installed on the outer end of silencing cylinder, the convex ring arranged on the upper end of soundproof sleeve and the recess groove opened on the lower end of soundproof sleeve.

[0007] Preferably, the inner end of the first sound insulation sleeve, the second sound insulation sleeve and the third sound insulation sleeve is provided with a first internal thread on one side.

[0008] Preferably, the outer end of the hand gun air cut off type screwdriver is provided with a first external thread.

[0009] Preferably, the upper end of the silencing cylinder is provided with a threaded opening, and the threaded opening and the exhaust port are connected by threads.

[0010] Preferably, the muffler bottom is also fixedly provided with a threaded connecting cylinder, and the threaded connecting cylinder is in threaded connection with the threaded opening.

[0011] Preferably, the convex ring and the groove are matched.

[0012] By adopting the technical scheme, the utility model has the beneficial effects that:

[0013] 1. In the utility model, the first, second and third sound insulation sleeves arranged on the outer end of the pistol air cut-off type screwdriver can insulate the components in the pistol air cut-off type screwdriver body during work through the sound insulation cotton on the inner end, so as to reduce the noise during use of the pistol air cut-off type screwdriver, and the first, second and third sound insulation sleeves and the first and second sealing rings mounted on the two sides of the inner end can also protect the sound insulation cotton on the inner end from water, thereby avoiding the influence of the sound insulation effect of the sound insulation cotton due to moisture.

[0014] 2. In the utility model, the muffler mounted on the outer end of the exhaust port at the bottom of the pistol air cut-off type screwdriver and the sound blocking sleeve mounted on the outer end of the muffler can effectively reduce the exhaust noise of the pistol air cut-off type screwdriver during use, and the number of connections can be freely added at the bottom of the muffler according to the noise requirement, so as to achieve better sound reduction effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure diagram of the utility model;

[0016] Fig. 2 It is a disassembly view of the first, second and third sound insulation sleeves of the utility model;

[0017] Fig. 3 It is a side sectional view of the first sound insulation sleeve of the utility model;

[0018] Fig. 4 It is another view of the utility model;

[0019] Fig. 5 It is a disassembly view of the muffler of the utility model;

[0020] Fig. 6 It is another view of the disassembly view of the muffler of the utility model.

[0021] REFERENCE SIGNS:

[0022] 100, pistol air cut-off type screwdriver; 101, air inlet; 102, exhaust port;

[0023] 200, sound insulation assembly; 201, first sound insulation sleeve; 202, second sound insulation sleeve; 203, third sound insulation sleeve; 204, sound insulation cotton; 205, first sealing ring; 206, second sealing ring; 207, first internal thread; 208, first external thread;

[0024] 300, sound attenuation assembly; 301, sound attenuation cylinder; 302, sound blocking sleeve; 303, convex ring; 304, groove; 305, threaded opening; 306, threaded connection cylinder. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the present application clearer, more specific embodiments will be described below in conjunction with the accompanying drawings. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] Some embodiments of the present application provide a low-noise pistol air breaking type fixed torque pneumatic tool.

[0027] Embodiment one:

[0028] In combination with Figs. 1-3 the drawings, the present application provides a low-noise pistol air breaking type fixed torque pneumatic tool, which includes: a pistol air breaking type screwdriver 100, a sound insulation assembly 200, and a sound attenuation assembly 300. The pistol air breaking type screwdriver 100 includes an air inlet 101 and an air outlet 102 installed on both sides of the bottom thereof. The sound insulation assembly 200 includes a first sound insulation sleeve 201, a second sound insulation sleeve 202, and a third sound insulation sleeve 203 arranged movably at the outer end of the pistol air breaking type screwdriver 100, sound insulation cotton 204 fixedly installed at the inner end of the first sound insulation sleeve 201, the second sound insulation sleeve 202, and the third sound insulation sleeve 203, a first sealing ring 205 and a second sealing ring 206 fixedly installed on both sides of the inner end of the first sound insulation sleeve 201, the second sound insulation sleeve 202, and the third sound insulation sleeve 203. The first internal thread 207 is arranged on one side of the inner end of the first sound insulation sleeve 201, the second sound insulation sleeve 202, and the third sound insulation sleeve 203, and the first external thread 208 is arranged at the outer end of the pistol air breaking type screwdriver 100.

[0029] Specifically, the pistol air breaking type fixed torque pneumatic tool refers to a pistol air breaking type pneumatic screwdriver, which is a pneumatic tool combined with excellent engineering design and mainly used for tightening or loosening screw caps; the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 arranged on the outer end of the pistol air breaking type screwdriver 100 can perform sound insulation on the components in the pistol air breaking type screwdriver 100 during work through the sound insulation cotton 204 on the inner end, so as to reduce the noise during use of the pistol air breaking type screwdriver 100, and the first sealing ring 205 and the second sealing ring 206 installed on the inner end of the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 can also waterproof the sound insulation cotton 204, thereby avoiding the influence of the sound insulation effect of the sound insulation cotton 204 due to moisture, and the first internal thread 207 arranged on the inner end of the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 and the first external thread 208 arranged on the outer end of the pistol air breaking type screwdriver 100 are mainly used for quick and stable installation of the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 on the outer end of the pistol air breaking type screwdriver 100.

[0030] Example two:

[0031] In combination Figs. 4-6 As shown in the embodiment, on the basis of the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203, the sound insulation assembly 300 includes the sound insulation cylinder 301 movably arranged and installed at the bottom of the exhaust port 102, the sound insulation sleeve 302 fixedly installed on the outer end of the sound insulation cylinder 301, the convex ring 303 arranged on the upper end of the sound insulation sleeve 302 and the groove 304 opened on the lower end of the sound insulation sleeve 302, the threaded port 305 arranged on the upper end of the sound insulation cylinder 301, the threaded connection between the threaded port 305 and the exhaust port 102, the threaded connection cylinder 306 fixedly installed on the bottom of the sound insulation cylinder 301, the threaded connection between the threaded connection cylinder 306 and the threaded port 305, and the matching between the convex ring 303 and the groove 304.

[0032] Specifically, the sound insulation cylinder 301 movably arranged and installed on the outer end of the exhaust port 102 at the bottom of the pistol air breaking type screwdriver 100 and the sound insulation sleeve 302 installed on the outer end of the sound insulation cylinder 301 can effectively reduce the exhaust noise during use of the pistol air breaking type screwdriver 100, and the number of the sound insulation cylinder 301 can be freely added according to the noise demand, so as to achieve better sound insulation effect, the convex ring 303 and the groove 304 arranged on the upper and lower ends of the sound insulation sleeve 302 are mainly used for clamping connection of the sound insulation sleeve 302 on the upper and lower ends after connection of the sound insulation cylinder 301, so as to ensure the sound insulation effect, and the threaded port 305 and the threaded connection cylinder 306 arranged on the upper and lower ends of the sound insulation cylinder 301 are mainly used for connection between the sound insulation cylinder 301.

[0033] Working principle and use process of the utility model:

[0034] Before the pistol air breaking screwdriver 100 is used, the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 are sequentially and rotatably installed to the outer end of the pistol air breaking screwdriver 100, after the installation of the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203, the first sealing ring 205 and the second sealing ring 206 on the inner end of the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 will protect the sound insulation cotton 204 at the center from water, then a plurality of sound reduction tubes 301 are sequentially and rotatably connected and installed to the bottom of the exhaust port 102 through the threaded port 305 and the threaded connecting tube 306 at the upper end and the lower end, after the installation of the sound reduction tube 301, the pistol air breaking screwdriver 100 can be started and used, during the use of the pistol air breaking screwdriver 100, the first sound insulation sleeve 201, the second sound insulation sleeve 202 and the third sound insulation sleeve 203 at the outer end will isolate the mechanical vibration in the pistol air breaking screwdriver 100 through the sound insulation cotton 204 at the inner end, and the sound reduction tube 301 arranged and installed at the bottom of the exhaust port 102 will reduce the noise in the exhaust of the pistol air breaking screwdriver 100 through the sound reduction sleeve 302 at the outer end, and then the noise reduction of the mechanical vibration and the exhaust noise in the pistol air breaking screwdriver 100 is unified to ensure the low noise during the use of the pistol air breaking screwdriver 100.

[0035] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A low-noise pistol-type fixed-torque pneumatic tool, characterized in that: include: Pistol shut-off screwdriver (100), sound insulation assembly (200), silencer assembly (300); The pistol-type screwdriver (100) includes an air inlet (101) and an air outlet (102) installed on both sides of the bottom thereof; The sound insulation component (200) comprises a first-level sound insulation cover (201), a second-level sound insulation cover (202) and a third-level sound insulation cover (203) movably arranged on the outer end of the pistol-type screwdriver (100), sound insulation cotton (204) fixedly attached to the inner ends of the first-level sound insulation cover (201), the second-level sound insulation cover (202) and the third-level sound insulation cover (203), and a first sealing ring (205) and a second sealing ring (206) fixedly attached to both sides of the inner ends of the first-level sound insulation cover (201), the second-level sound insulation cover (202) and the third-level sound insulation cover (203); The silencer assembly (300) comprises a silencer tube (301) movably arranged at the bottom of the exhaust port (102), a sound-blocking sleeve (302) fixedly attached to the outer end of the silencer tube (301), a convex ring (303) provided at the upper end of the sound-blocking sleeve (302), and a groove (304) provided at the lower end of the sound-blocking sleeve (302).

2. A low-noise pistol-type fixed-torque pneumatic tool according to claim 1, characterized in that: One side of the inner end of each of the first-level sound insulation sleeve (201), the second-level sound insulation sleeve (202) and the third-level sound insulation sleeve (203) is provided with a first internal thread (207).

3. A low-noise pistol-type fixed-torque pneumatic tool according to claim 1, characterized in that: The outer end of the pistol-type screwdriver (100) is provided with a first external thread (208).

4. A low-noise pistol-type fixed-torque pneumatic tool according to claim 1, characterized in that: The upper end of each silencer (301) is provided with a threaded opening (305), and the threaded opening (305) is threadedly connected to the exhaust port (102).

5. A low-noise pistol-type fixed-torque pneumatic tool according to claim 4, characterized in that: A threaded connection tube (306) is also fixedly mounted on the bottom of each muffler tube (301), and the threaded connection tube (306) is threadedly connected to the threaded opening (305).

6. A low-noise pistol-type fixed-torque pneumatic tool according to claim 1, characterized in that: The convex ring (303) and the groove (304) match each other.

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