Pneumatic nail gun

Abstract

The utility model discloses pneumatic nail gun, including the gun head and with the hand -held body of gun head lower end surface connection, the hand -held body has the cavity, and the hand -held body inside is equipped with the baffle, the baffle divides the cavity into the air inlet channel and exhaust passage, the air inlet of air inlet channel and the air outlet of exhaust passage all are located in the one end away from the gun head, exhaust passage is equipped with the silencer near the air outlet. Through the air inlet of air inlet channel and the air outlet of exhaust passage all are located in the one end away from the gun head of hand -held body, changed the direction of high -pressure exhaust. The exhaust is no longer towards the user located above the gun body, but from the tool tail rearward exhaust, solved the uncomfortable feeling and potential health risk that high -pressure exhaust gas blows the user's body and face brought, is equipped with the silencer near the air outlet of exhaust passage, greatly reduced the strong blast noise produced when exhaust, reduced the damage to operator's hearing.

Description

Technical Field

[0001] This utility model relates to the field of nailing technology, specifically to a pneumatic nail gun. Background Technology

[0002] Pneumatic nail guns, as a common pneumatic tool, are widely used in construction and decoration due to their powerful performance and high efficiency. Their working principle involves using compressed air to drive an internal piston in a reciprocating motion, thus completing the nailing operation. After the operation is completed, the exhaust gas in the cylinder needs to be quickly expelled in preparation for the next shot. In traditional nail gun designs, the exhaust channel is usually located behind the nozzle, that is, on the side of the nozzle furthest from the mouthpiece, with the exhaust port directly facing the operator's hand or body. This layout has significant drawbacks. First, the high-pressure exhaust gas discharged at high speed directly impacts the user's hands or body, causing not only strong discomfort but also frostbite in cold environments. Second, due to the short exhaust path and lack of effective noise reduction measures, a loud popping sound is produced during exhaust, which can damage the operator's hearing with prolonged use. Utility Model Content

[0003] To address the technical problem of existing nail guns where the exhaust port faces directly towards the operator's hand or body, resulting in significant noise, this invention proposes a pneumatic nail gun. By placing both the air inlet and outlet of the air intake channel at the end of the handheld part away from the gun head, the direction of high-pressure exhaust is altered. A silencer significantly reduces the intense explosive noise generated during exhaust, mitigating potential hearing damage to the operator.

[0004] The technical solution adopted by this utility model is as follows: A pneumatic nail gun includes a gun head and a handheld body connected to the lower end face of the gun head. The handheld body has a cavity, and a partition is provided inside the handheld body. The partition divides the cavity into an air inlet channel and an air outlet channel. The air inlet of the air inlet channel and the air outlet of the air outlet channel are both located at the end away from the gun head. A silencer is provided near the air outlet of the air outlet channel.

[0005] Optionally, the shape of the muffler matches the shape of the exhaust channel, and the muffler is sound-absorbing cotton or a porous structure.

[0006] Optionally, the handheld body includes a handheld part and a cover detachably connected to the handheld part, the cover having the air inlet and air outlet.

[0007] Optionally, a mounting part is provided between the handheld part and the cover. The mounting part has an air intake hole that matches the shape of the air intake channel. The mounting part also has a mounting hole that matches the shape of the exhaust channel. The muffler is interference-fitted with the mounting hole.

[0008] Optionally, the inner wall of the exhaust passage is provided with an annular protrusion, one end of the muffler abuts against the annular protrusion, and the other end of the muffler is installed in the mounting hole.

[0009] Optionally, the hand-held part, the mounting part, and the cover are each provided with screw holes for screws to pass through.

[0010] Optionally, the bottom of the cover is provided with a baffle, and the baffle has an opening on the side facing the air inlet, and the opening is connected to the air outlet.

[0011] Optionally, the air inlet of the cover is connected to an air inlet adapter, the air inlet is provided with an internal thread, and the air inlet adapter is provided with an external thread that mates with the internal thread.

[0012] The beneficial effects of this invention are as follows: By placing both the air inlet of the air intake channel and the air outlet of the exhaust channel at the end of the handheld body furthest from the nozzle, the direction of high-pressure exhaust is changed. The exhaust is no longer directed towards the user above the nozzle, but rather discharged rearward from the tool's tail, resolving the discomfort and potential health risks caused by high-pressure exhaust gas blowing against the user's body and face, significantly improving comfort and operational safety during extended use. A silencer is installed near the outlet of the exhaust channel. This design ensures that the high-pressure, high-speed exhaust gas generated after operation must pass through the silencer before exiting the tool body, greatly reducing the intense explosive noise generated during exhaust and mitigating damage to the operator's hearing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the pneumatic nail gun proposed in the embodiment of this utility model;

[0014] Figure 2 This is an exploded view of the pneumatic nail gun proposed in an embodiment of this utility model;

[0015] Figure 3 This is a schematic diagram of the cap proposed in an embodiment of the present utility model.

[0016] The labels in the attached figures are as follows: 1. Gun head; 2. Handheld body; 3. Partition; 4. Air intake channel; 5. Exhaust channel; 6. Air inlet; 7. Air outlet; 8. Silencer; 9. Handheld part; 10. Cover; 11. Mounting part; 12. Air intake hole; 13. Mounting hole; 14. Raised ring; 15. Screw hole; 16. Baffle; 17. Opening; 18. Air intake adapter. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 3As shown, this embodiment discloses a pneumatic nail gun, including a gun head 1 and a handheld body 2. The gun head 1 is the core component for nailing, and typically contains a piston, firing pin, etc. The handheld body 2 has a cavity inside, separated by a partition 3. The partition 3 extends longitudinally along the handheld body 2, clearly dividing the cavity into two independent channels: an air inlet channel 4 and an air outlet channel 5. The air inlet 6 of the air inlet channel 4 and the air outlet 7 of the air outlet channel 5 are both located at the end of the handheld body 2 away from the gun head 1, i.e., the tail of the handheld body. This design changes the exhaust direction of traditional nail guns. During operation, high-pressure gas enters from the tail air inlet 6, drives the mechanism inside the gun head 1, and exhaust gas is also discharged from the tail exhaust channel 5 and the air outlet 7. Since the air outlet 7 faces away from the user, the high-pressure exhaust will not blow onto the user's face or body, improving the comfort and safety of use. The exhaust passage 5 extends the path of exhaust gas discharge, achieving a noise reduction effect. Furthermore, a noise reduction component 8 is provided inside the exhaust passage 5, near its outlet 7. This noise reduction component 8 directly acts on the discharged airflow, further enhancing the noise reduction effect.

[0019] Furthermore, the shape of the muffler 8 is designed to closely match the cross-sectional shape of the exhaust channel 5. For example, if the exhaust channel 5 is cylindrical, the muffler 8 is also machined into a corresponding cylindrical block to ensure that it can fill the channel to the maximum extent, leaving no significant tortuous gaps, so that most of the exhaust airflow must pass through the muffler. The material of the muffler 8 can be sound-absorbing cotton (such as glass fiber cotton, ceramic fiber cotton) or a porous structure (such as porous metal sintered body, porous plastic). The shape matching ensures the maximization of the sound absorption area, and the sound-absorbing cotton or porous structure can effectively convert the airflow sound energy into heat energy and dissipate it, greatly reducing the high-frequency howling and overall noise level during exhaust, and improving the working environment.

[0020] In this embodiment, the handheld body 2 consists of a handheld part 9 and a cover 10. The handheld part 9 is the main structure, with an air intake channel 4 and an exhaust channel 5 machined inside, separated by a partition 3. The cover 10 is detachably fixed to the tail of the handheld part 9. The air intake port 6 and the air outlet 7 are directly disposed on the cover 10. This split design makes the interior of the air intake channel 4 and the exhaust channel 5 easily accessible. This greatly facilitates internal cleaning, maintenance, and replacement of the muffler 8, improving the maintainability and service life of the product.

[0021] Furthermore, a separate mounting part 11 is provided between the handheld part 9 and the cover 10. This mounting part 11 can be a separate component or integrally formed with the handheld part 9. The mounting part 11 has two key channels: an air intake hole 12, whose shape and size perfectly align with the end of the air intake channel 4 to ensure unobstructed airflow; and a mounting hole 13, whose shape and size match the end of the exhaust channel 5 and the shape of the muffler 8. The muffler 8 is pressed into the mounting hole 13 with an interference fit. The mounting part 11 serves as a connecting and positioning element, and the interference fit ensures that the muffler 8 will not loosen or fall off under the impact of high-speed, high-pressure airflow, guaranteeing the stability of the muffler effect.

[0022] Furthermore, an inwardly protruding annular protrusion 14 is machined on the inner wall of the exhaust passage 5. When the muffler 8 is inserted into the exhaust passage 5 through the mounting hole 13, one end of it will tightly abut against the end face of the annular protrusion 14, while the other end is restricted by the mounting hole 13 of the mounting part 11. The annular protrusion 14 constitutes a mechanical limiting structure, further preventing the muffler 8 from moving deeper into the exhaust passage under the reaction force of the airflow. Together with the interference fit of the mounting hole 13, it forms a bidirectional positioning, greatly enhancing the reliability of the fixation.

[0023] The handheld part 9, the mounting part 11, and the cover 10 are fixed together by screws. Specifically, each of these three components has a screw hole 15 at a corresponding position for the screw to pass through. During assembly, the screw passes through the screw holes on the cover 10 and the mounting part 11 in sequence, and finally screws into the screw hole on the handheld part 9, tightly connecting the three parts into a whole. This ensures the structural rigidity and sealing of the entire handheld body 2, while maintaining the convenience of maintenance due to this detachable connection.

[0024] At the bottom of the cover 10, a baffle 16 extends downwards, located below the air outlet 7. An opening 17 is formed on the side wall of the baffle 16 (i.e., the side perpendicular to the axial jet direction of the air outlet 7). This opening 17 is spatially perpendicular to the area where the internal muffler 8 is located, forming a concealed final exhaust port. The baffle 16 and the specifically positioned opening 17 together constitute a guiding and protective structure. On the one hand, after the air passes through the muffler 8, the exhaust gas flow direction is forcibly changed from axial to radial (lateral), increasing exhaust resistance and further reducing exhaust speed and impact noise, ensuring maximum noise reduction. On the other hand, it prevents external foreign objects (such as wood chips and dust) from being directly sucked back into the exhaust channel from the air outlet 7, contaminating the muffler 8, and also avoids high-pressure gas blowing directly at the user. Simultaneously, the exhaust airflow is less likely to stir up dust on the ground, further improving operational comfort and safety.

[0025] In this embodiment, the air inlet 6 on the cover 10 is provided with an internal thread. An air inlet adapter 18 is screwed into the air inlet 6 via its external thread. The other end of the air inlet adapter 18 is used to connect to an external compressed air hose. The threaded connection provides good sealing and connection strength. By replacing the air inlet adapter 18 with different specifications, it is possible to adapt to compressed air hose fittings of different standards.

[0026] Compressed air enters the air inlet 6 through the air inlet adapter 18, flows through the air inlet channel 4, and finally reaches the nozzle 1 to drive the working part. After driving, the exhaust gas enters the exhaust channel 5 and must pass through the silencer 8 before being discharged from the air outlet 7. During this process, the airflow is obstructed, diffused, and absorbed, and the sound energy is greatly attenuated, finally being discharged with lower noise and away from the user.

[0027] It is understood that the specific embodiments described above are merely for explaining the relevant utility model and not for limiting the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict with each other. All equivalent structural transformations made based on the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly included within the protection scope of this utility model.

Claims

1. A pneumatic nail gun, characterized in that, The device includes a gun head and a handheld body connected to the lower end face of the gun head. The handheld body has a cavity and a partition is provided inside the handheld body. The partition divides the cavity into an air intake channel and an air exhaust channel. The air intake port of the air intake channel and the air exhaust port of the air exhaust channel are both located at the end away from the gun head. A silencer is provided near the air exhaust port of the air exhaust channel.

2. The pneumatic nail gun according to claim 1, characterized in that, The shape of the muffler matches the shape of the exhaust channel, and the muffler is sound-absorbing cotton or a porous structure.

3. The pneumatic nail gun according to claim 1, characterized in that, The handheld device includes a handheld part and a cover detachably connected to the handheld part, the cover having the air inlet and air outlet.

4. The pneumatic nail gun according to claim 3, characterized in that, A mounting part is provided between the handheld part and the cover. The mounting part has an air intake hole that matches the shape of the air intake channel. The mounting part also has a mounting hole that matches the shape of the exhaust channel. The muffler is interference-fitted with the mounting hole.

5. The pneumatic nail gun according to claim 4, characterized in that, The inner wall of the exhaust passage is provided with an annular protrusion, one end of the muffler abuts against the annular protrusion, and the other end of the muffler is installed in the mounting hole.

6. The pneumatic nail gun according to claim 4, characterized in that, The hand-held part, the mounting part, and the cover are each provided with screw holes for screws to pass through.

7. The pneumatic nail gun according to claim 3, characterized in that, The bottom of the cover is provided with a baffle, and the baffle has an opening on the side facing the air inlet, which is connected to the air outlet.

8. The pneumatic nail gun according to claim 3, characterized in that, The air inlet of the cover is connected to an air inlet adapter. The air inlet has an internal thread, and the air inlet adapter has an external thread that mates with the internal thread.

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