Multi-functional nail shooting device

Abstract

The utility model discloses multifunctional nail shooting device through setting the baffle in the hand held body inside, the cavity is divided into independent air inlet channel and exhaust channel, make the airflow path inside blowing system clear, do not interfere with each other. This structure effectively reduces the turbulence and pressure loss of airflow in the cavity, ensures that the airflow that sprays from the air hole has higher concentration and stability, thereby significantly improves the efficiency and effect of cleaning the debris. The sound attenuation piece is arranged at the air outlet of the exhaust channel, can effectively absorb and attenuate the sound wave energy generated by high pressure exhaust, controls the exhaust noise at a low level, greatly improves the working environment of the operator. The blowing valve structure is adopted, under normal circumstances, the air path is kept closed by the elastic force of the elastic member, and the sealing performance is good. When blowing is needed, the air path can be opened instantly by simply pressing the valve rod in a straight line, and the operation is very convenient. After loosening, the valve rod can automatically reset, close the air path, and has quick response and long service life.

Description

Technical Field

[0001] This utility model relates to the field of nail gun equipment technology, and specifically to a multi-functional nail gun device. Background Technology

[0002] A nail gun is a tool that uses high-pressure gas to drive nails for fastening operations, and it is widely used in construction, decoration, and other fields. In actual operation, sawdust, dust, and other debris often remain in the work area, affecting the accurate positioning and final effect of the nails. To address this, designs integrating an air-blowing function have emerged in the field, using airflow from the nozzle to clean the work surface. However, existing nail guns with air-blowing functions still have many areas for improvement in their air-blowing systems. First, the structural design of the air-blowing path is often relatively simple, with ineffective separation of the intake and exhaust paths, leading to turbulent internal airflow, significant energy loss, and insufficiently concentrated and stable airflow, resulting in poor debris removal. Second, the high-pressure gas generates loud noise during discharge, worsening the operating environment. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model proposes a multifunctional nail gun device. By setting a partition inside the grip body, the cavity is divided into independent air intake and exhaust channels, making the airflow path inside the blowing system clear and non-interfering.

[0004] The technical solution adopted by this utility model is as follows: A multifunctional nail gun device includes a gun head and a handheld body disposed on 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. The gun head is provided with a valve cavity communicating with the air inlet channel, an air valve installed in the valve cavity, and an air outlet corresponding to the valve cavity. The air valve includes a valve stem that can slide axially through the valve cavity and an elastic element sleeved on the valve stem. The valve stem is provided with a first sealing element, and the valve stem has a first position and a second position in the valve cavity. When the valve stem is in the first position, the first sealing element cooperates with the inner wall of the valve cavity to seal the air passage. When the valve stem moves to the second position against the elastic force of the elastic element, the first sealing element disengages from the inner wall of the valve cavity. The air inlet channel, the valve cavity, and the air outlet are connected in sequence.

[0005] Optionally, the valve stem includes a first rod body, an intermediate rod body, and a second rod body connected in sequence. The diameter of the intermediate rod body is smaller than that of the first rod body and the second rod body. The first rod body is movable inside the housing. The first rod body is provided with the first sealing element. The second rod body is provided with a second sealing element that always abuts against the inner wall of the valve cavity. The second rod body extends outside the housing and is fitted with the elastic element.

[0006] Optionally, the first rod body has a first limiting part at the end away from the intermediate rod body, and the first limiting part moves against the end face of the valve cavity. The second rod body has a second limiting part at the end away from the first rod body. One end of the elastic member abuts against the other end face of the valve cavity, and the other end of the elastic member abuts against the second limiting part. The first rod body has a first annular groove for installing the first sealing member, and the second rod body has a second annular groove for installing the second sealing member.

[0007] Optionally, the second limiting part includes a limiting plate and an annular plate. The limiting plate is connected to the second rod body. The annular plate is arranged around the outer peripheral wall of the limiting plate to form an annular cavity. The end of the elastic member away from the shell abuts against the inner wall of the limiting plate and is placed in the annular cavity.

[0008] Optionally, the shape of the muffler matches the shape of the exhaust channel, and the muffler is sound-absorbing cotton or a porous structure.

[0009] Optionally, the handheld body includes a handheld part, a mounting part, and a cover that are detachably connected in sequence. The cover is provided with an air inlet and an air outlet. The mounting part is provided with an air inlet hole that matches the shape of the air inlet channel. The mounting part is also provided with a mounting hole that matches the shape of the exhaust channel. The inner wall of the exhaust channel is provided with an annular protrusion. One end of the muffler abuts against the annular protrusion, and the other end of the muffler is interference-fitted with the mounting hole.

[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, it also includes a safety assembly and a nozzle, the nozzle being located at one end of the gun head, and a first limiting rod being located below the gun head. The safety assembly includes a safety seat, a safety handle, an adjusting rod, an adjusting nut, a safety bracket, and a spring. The safety seat has a channel for the safety handle to pass through. One end of the safety handle is slidably connected to the safety seat, and the other end of the safety handle is rotatably connected to the adjusting rod. The adjusting nut is tightly fitted onto the outer peripheral wall of the adjusting rod. The outer peripheral wall of the end of the adjusting rod facing the safety bracket has an external thread, and the safety bracket has an internal thread that mates with the external thread. One end of the spring is connected to the portion of the adjusting rod that passes through the safety handle, and the other end of the spring abuts against the inner wall of the safety seat. The end face of the adjusting nut away from the spring abuts against the first limiting rod. One end of the safety bracket is connected to the adjusting rod, and the other end of the safety bracket extends movably to the side of the adjusting rod.

[0012] Optionally, the outer peripheral wall of the adjusting rod is provided with a protrusion and a step, the adjusting nut is provided with a groove that mates with the protrusion, the adjusting rod is provided with a step, one end of the adjusting nut abuts against the first limiting rod, and the other end of the adjusting nut abuts against the step.

[0013] Optionally, the adjusting rod includes a first limiting section, a second limiting section, a third limiting section, and a guide section connected in sequence. The first limiting section is fixedly fitted with a limiting block. The outer peripheral wall of the second limiting section is provided with the external thread, the length of which is greater than the length of the internal thread of the adjusting nut. The third limiting section is provided with the protrusion and the step. The safety handle is provided with a through hole for the guide section to pass through. The end of the spring away from the safety seat is fitted onto the outer peripheral wall of the guide section.

[0014] The beneficial effects of this invention are as follows: By setting a partition inside the grip body, the cavity is divided into independent air intake and exhaust channels, ensuring clear and non-interfering airflow paths within the blowing system. This structure effectively reduces airflow turbulence and pressure loss within the cavity, ensuring higher concentration and stability of the airflow ejected from the exhaust port, thereby significantly improving the efficiency and effectiveness of debris removal. A silencer is installed at the exhaust port of the exhaust channel, effectively absorbing and attenuating the sound wave energy generated by high-pressure exhaust, keeping exhaust noise at a low level and greatly improving the operator's working environment. The blow valve structure, under normal conditions, keeps the air passage closed by the elastic force of the elastic element, providing good sealing; when blowing is needed, simply pressing the valve stem in a straight line instantly opens the air passage, making operation very convenient. After releasing, the valve stem automatically resets, closing the air passage, with rapid response and a long service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the exhaust channel of the multifunctional nail gun device proposed in this embodiment of the utility model;

[0016] Figure 2 An exploded view of the handheld body of the multifunctional nail gun device proposed in this embodiment of the utility model;

[0017] Figure 3 A schematic diagram of the cover of the handheld body according to an embodiment of this utility model;

[0018] Figure 4 A schematic diagram of the air valve of the multifunctional nail gun device proposed in this embodiment of the utility model;

[0019] Figure 5 This is a cross-sectional view of the air-blowing valve proposed in an embodiment of the present utility model;

[0020] Figure 6 This is a cross-sectional view of the air outlet provided in an embodiment of the present utility model;

[0021] Figure 7 This is a schematic diagram of the valve stem of the air blowing valve proposed in an embodiment of the present utility model;

[0022] Figure 8 This is a schematic diagram of the first limiting rod of the safety component proposed in an embodiment of the present utility model;

[0023] Figure 9 This is a cross-sectional view of the insurance component proposed in an embodiment of the present utility model;

[0024] Figure 10 for Figure 9 A schematic diagram of A in the middle;

[0025] Figure 11 This is a schematic diagram of the adjusting rod and safety handle proposed in an embodiment of this utility model.

[0026] The labels in the attached figures are as follows: 1. Gun head; 2. Handheld body; 3. Partition; 4. Air inlet channel; 5. Exhaust channel; 6. Air inlet; 7. Air outlet; 8. Silencer; 9. Handheld part; 10. Cover; 11. Mounting part; 12. Air inlet hole; 13. Mounting hole; 14. Ring protrusion; 15. Baffle; 16. Opening; 20. Air valve; 21. Valve stem; 22. Elastic element; 23. First seal; 24. Second seal; 25. Valve cavity; 26. Air outlet; 27. First rod; 28. Intermediate rod; 29. ​​Second rod; 30. First limiting part; 31. Second... 32. Limiting part; 33. Limiting plate; 40. Ring plate; 41. Safety component; 42. Safety seat; 43. Safety handle; 44. Adjusting rod; 45. Adjusting nut; 46. Safety frame; 47. Spring; 48. First limiting rod; 49. Second limiting rod; 50. Locking protrusion; 51. Nozzle; 52. Connecting part; 53. Handle; 54. First limiting section; 55. Second limiting section; 56. Third limiting section; 57. Guide section; 58. Limiting block; 59. External thread; 60. Protrusion; 61. Step; 62. Through hole; 63. Limiting protrusion; 64. Limiting groove; 65. Hook. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 11 As shown, this embodiment discloses a multifunctional nail gun device, including a gun head 1 and a handheld body 2. The handheld body 2 has a cavity precisely divided by a longitudinally extending partition 3, forming completely independent air intake channels 4 and exhaust channels 5. The air inlet 6 of the air intake channel 4 and the air outlet 7 of the exhaust channel 5 are concentrated on the tail end face of the handheld body 2, and their central axes are parallel to each other. The silencer 8 can be precision injection molded or molded, and its outer contour matches the exhaust channel 5. The main body material of the silencer 8 is high-temperature resistant (polyimide foam material), and its interior is uniformly distributed with through-pores with a pore size of 50-200 micrometers. This multi-level microporous structure can effectively convert airflow sound energy into heat energy.

[0029] The handheld body 2 includes a handheld part 9, a mounting part 11, and a cover 10 connected in sequence by screws. The cover 10 has an air inlet 6 and an air outlet 7. The mounting part 11 has an air inlet hole 12 that mates with the air inlet channel 4 and a mounting hole 13 for fixing the muffler 8. To ensure the muffler 8 is securely installed, an inwardly protruding annular protrusion 14 is provided on the inner wall of the exhaust channel 5. During installation, one end of the muffler 8 abuts against this annular protrusion 14, and the other end is pressed into the mounting hole 13 of the mounting part 11 with an interference fit, forming a reliable fixation.

[0030] At the bottom of the cover 10, a baffle 15 extends downwards. The baffle 15 has an opening 16 on the side facing the air inlet 6, which communicates with the internal air outlet 7. This design allows the exhaust gas to be discharged from the side rather than directly to the rear, effectively preventing the exhaust airflow from blowing up dust on the ground and further optimizing the user experience.

[0031] Inside the gun head 1, there is a valve chamber 25 communicating with the air intake channel 4. The valve chamber 25 is a dedicated cavity independent of the firing pin chamber. Inside the gun head 1 body, the firing pin chamber is located in the central axis region of the gun head 1, used to accommodate the firing pin and its driving piston, ensuring that the impact force of nail driving is transmitted efficiently in a straight line. The valve chamber 25 is located on the upper side or in a non-core area of ​​the gun head 1, and its axis is spatially parallel to or at a certain angle to the axis of the firing pin chamber. This staggered layout ensures that the valve chamber 25 does not interfere with the firing pin chamber and its internal moving parts. The air valve 20 is installed in this valve chamber 25. The air valve 20 includes a valve stem 21 and an elastic element 22 (usually a compression spring 46). The valve stem 21 adopts a stepped shaft design, including a first rod 27, an intermediate rod 28, and a second rod 29 connected coaxially in sequence. The diameter of the intermediate rod 28 is smaller than that of the first rod 27 and the second rod 29, so as to form an airflow channel in the valve chamber 25. The first rod 27 has a first annular groove for installing a first seal 23 (such as an O-ring). The second rod 29 has a second annular groove for installing a second seal 24 (such as an O-ring). The second seal 24 remains sealed to the inner wall of the valve cavity 25 throughout the entire stroke of the valve stem 21 to prevent air leakage. The second rod 29 extends outside the housing of the nozzle 1 and is fitted with an elastic element 22.

[0032] To ensure stable travel of the valve stem 21, a first limiting portion 30 (such as a flange) is provided at the end of the first stem 27, and a second limiting portion 31 is provided at the end of the second stem 29. The second limiting portion 31 consists of a limiting plate 32 and an annular plate 33 surrounding it, forming an annular cavity. One end of the elastic element 22 abuts against the end face of the valve cavity 25, while the other end extends into this annular cavity and abuts against the limiting plate 32. The depth of the annular cavity is greater than the diameter of the elastic element 22 to ensure that the spring 46 will not dislodge or bend excessively when fully compressed.

[0033] In the normal first position, under the elastic force of the elastic element 22, the first limiting part 30 of the valve stem 21 abuts against the end face of the valve cavity 25. At this time, the first sealing element 23 is in close contact with the inner wall of the valve cavity 25, sealing the air passage from the air inlet channel 4 to the air outlet 26. When cleaning debris is required, the user presses the second limiting part 31 at the tail of the valve stem 21 to overcome the elastic force of the elastic element 22, causing the valve stem 21 to move to the second position. At this time, the first sealing element 23 moves with the first rod body 27, disengaging from the sealing surface and opening the air passage. Compressed air then flows from the air inlet channel 4 through the valve cavity 25 and finally exits at high speed from the air outlet 26 on the nozzle 1, precisely blowing towards the working area in front of the nozzle 50 to clean debris. After being released, the valve stem 21 automatically resets under the action of the elastic element 22.

[0034] The nail-driving device can also integrate a safety assembly 40. The front end of the gun head 1 has a nozzle 50, and a first limiting rod 47 is fixed below the gun head 1. The safety assembly 40 includes a safety seat 41, a safety handle 42, an adjusting rod 43, an adjusting nut 44, a safety bracket 45, and a spring 46. The safety seat 41 is fixed to the gun holder of the gun head 1, and has a channel for the safety handle 42 to pass through. One end of the safety handle 42 is slidably connected to the safety seat 41, and the other end is rotatably connected to the adjusting rod 43. The adjusting rod 43 has a precise structure, including a first limiting section 53, a second limiting section 54, a third limiting section 55, and a guide section 56 connected in sequence. A limiting stop 57 is fixedly fitted on the first limiting section 53. The outer periphery of the second limiting section 54 is machined with external threads 58, the length of which is greater than the length of the internal threads on the adjusting nut 44. The third limiting section 55 has a larger diameter and is provided with a protrusion 59 (such as a key) and a step 60. A through hole 61 is provided on the connecting part 51 of the safety handle 42 for the guide section 56 to pass through. A spring 46 is sleeved on the guide section 56, with one end connected to the adjusting rod 43 and the other end abutting against the inner wall of the safety seat 41. An adjusting nut 44 is securely fitted onto the adjusting rod 43, with its internal groove engaging with the protrusion 59, allowing both to rotate synchronously. One end of the adjusting nut 44 abuts against the first limiting rod 47, and the other end abuts against the step 60, thereby restricting the axial movement of the adjusting rod 43, allowing it to rotate only.

[0035] The safety bracket 45 engages with the external thread 58 of the second limiting section 54 of the adjusting rod 43 via its internal thread. The safety bracket 45 is a bridging structure; one end connects to the adjusting rod 43, and the other end extends forward, passing over the magazine and positioned directly in front of the nozzle 50. When adjusting the nailing depth, the user rotates the adjusting nut 44, causing the adjusting rod 43 to rotate synchronously. Because the safety bracket 45 is restricted from rotation by its bridging structure, the rotational motion of the adjusting rod 43 is converted into linear motion of the safety bracket 45 along its axis through the threaded joint. Moving the safety bracket 45 forward results in a shallower nailing depth; moving it backward results in a deeper nailing depth. When the nail gun leaves the working surface, the safety bracket 45 is no longer compressed, and the restoring force of the previously compressed spring 46 drives the adjusting rod 43 and the safety bracket 45 to retract together to the initial safe position. At this point, the safety handle 42 cannot be pressed down, thus achieving the safety function.

[0036] To prevent accidental operation, a limiting groove 63 is provided on the end face of the third limiting section 55 of the adjusting rod 43, which cooperates with the limiting protrusion 62 on the connecting part 51 of the safety handle 42 to provide a certain anti-rotation friction force, effectively preventing the adjusting rod 43 and the adjusting nut 44 from rotating accidentally. The end face of the limiting protrusion 62 cooperating with the limiting groove 63 can be an arc surface, making it convenient for the user to rotate the adjusting rod 43 through the adjusting nut 44. The handle 52 of the safety handle 42 is used to activate the switch. A second limiting rod 48 is provided in front of the connecting part 51 of the safety handle 42 (i.e., closer to the nozzle 50) of the safety seat 41. The front end face of the connecting part 51 makes movable contact with the rod body of the second limiting rod 48, thus being rigidly blocked. A locking protrusion 49 is formed on the inner wall of the safety seat 41. The locking protrusion 49 moves against the rear of the connecting part 51 of the safety handle 42 (i.e., away from the nozzle 50), and the movement stroke of the safety handle 42 is formed between the second limiting rod 48 and the locking protrusion 49.

[0037] A hook 64 may be provided between the handheld body 2 and the magazine connecting bridge to facilitate staff to carry the nail gun with them.

[0038] 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 multifunctional nail gun device, characterized in that, Includes the gun head and a hand-held component located on the lower end 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. The gun head is provided with a valve cavity communicating with the air inlet channel, an air blowing valve installed in the valve cavity, and an air outlet corresponding to the valve cavity. The air blowing valve includes a valve stem that can slide axially through the valve cavity and an elastic element sleeved on the valve stem. The valve stem is provided with a first sealing element, and the valve stem has a first position and a second position in the valve cavity. When the valve stem is in the first position, the first sealing element cooperates with the inner wall of the valve cavity to seal the air passage. When the valve stem moves to the second position against the elastic force of the elastic element, the first sealing element disengages from the inner wall of the valve cavity, and the air inlet channel, valve cavity, and air outlet are connected in sequence.

2. The multifunctional nail gun device according to claim 1, characterized in that, The valve stem includes a first rod body, an intermediate rod body, and a second rod body connected in sequence. The diameter of the intermediate rod body is smaller than that of the first rod body and the second rod body. The first rod body is located inside the housing. The first rod body is provided with the first sealing element. The second rod body is provided with the second sealing element that always abuts against the inner wall of the valve cavity. The second rod body extends outside the housing and is fitted with the elastic element.

3. The multifunctional nail gun device according to claim 2, characterized in that, The first rod body has a first limiting part at the end away from the middle rod body, and the first limiting part moves against the end face of the valve cavity. The second rod body has a second limiting part at the end away from the first rod body. One end of the elastic element abuts against the other end face of the valve cavity, and the other end of the elastic element abuts against the second limiting part. The first rod body has a first annular groove for installing the first sealing element, and the second rod body has a second annular groove for installing the second sealing element.

4. The multifunctional nail gun device according to claim 3, characterized in that, The second limiting part includes a limiting plate and an annular plate. The limiting plate is connected to the second rod body. The annular plate is arranged around the outer peripheral wall of the limiting plate to form an annular cavity. The end of the elastic member away from the shell abuts against the inner wall of the limiting plate and is placed in the annular cavity.

5. The multifunctional nail gun device 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.

6. The multifunctional nail gun device according to claim 1, characterized in that, The handheld body includes a handheld part, a mounting part, and a cover that are detachably connected in sequence. The cover is provided with an air inlet and an air outlet. The mounting part is provided with an air inlet hole that matches the shape of the air inlet channel. The mounting part is also provided with a mounting hole that matches the shape of the exhaust channel. The inner wall of the exhaust channel is provided with an annular protrusion. One end of the muffler abuts against the annular protrusion, and the other end of the muffler is interference-fitted with the mounting hole.

7. The multifunctional nail gun device according to claim 6, 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 multifunctional nail gun device according to claim 1, characterized in that, It also includes a safety assembly and a nozzle. The nozzle is located at one end of the gun head, and a first limiting rod is located below the gun head. The safety assembly includes a safety seat, a safety handle, an adjusting rod, an adjusting nut, a safety bracket, and a spring. The safety seat has a channel for the safety handle to pass through. One end of the safety handle is slidably connected to the safety seat, and the other end of the safety handle is rotatably connected to the adjusting rod. The adjusting nut is tightly fitted onto the outer peripheral wall of the adjusting rod. The outer peripheral wall of the end of the adjusting rod facing the safety bracket has an external thread, and the safety bracket has an internal thread that mates with the external thread. One end of the spring is connected to the portion of the adjusting rod that passes through the safety handle, and the other end of the spring abuts against the inner wall of the safety seat. The end face of the adjusting nut away from the spring abuts against the first limiting rod. One end of the safety bracket is connected to the adjusting rod, and the other end of the safety bracket extends movably to the side of the adjusting rod.

9. The multifunctional nail gun device according to claim 8, characterized in that, The outer peripheral wall of the adjusting rod is provided with protrusions and steps, the adjusting nut is provided with a groove that mates with the protrusions, the adjusting rod is provided with steps, one end of the adjusting nut abuts against the first limiting rod, and the other end of the adjusting nut abuts against the steps.

10. The multifunctional nail gun device according to claim 9, characterized in that, The adjusting rod includes a first limiting section, a second limiting section, a third limiting section, and a guide section connected in sequence. The first limiting section is fixedly fitted with a limiting block. The outer peripheral wall of the second limiting section is provided with the external thread, the length of which is greater than the length of the internal thread of the adjusting nut. The third limiting section is provided with the protrusion and the step. The safety handle is provided with a through hole for the guide section to pass through. The end of the spring away from the safety seat is fitted onto the outer peripheral wall of the guide section.

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