Nail shooting device

Abstract

The utility model provides a nail shooting device and belongs to the technical field of nail shooting devices. The technical problem that an existing nail shooting device is insufficient in safety is solved. The nail shooting device comprises a shell, a sleeve and a firing pin rod, the shell is in a pistol shape, a muzzle portion of the shell and the sleeve are both in a barrel shape, a columnar excitation cap capable of reciprocating in the radial direction of the firing pin rod is arranged on the periphery of the firing pin rod, the firing pin rod is axially connected into the muzzle portion in a sliding mode, and the sleeve is arranged on the periphery of the firing pin rod in a sliding and sleeved mode. The firing pin rod is axially positioned with the sleeve through the excitation cap, the inner hole wall of the muzzle part is provided with an excitation inclined surface, the nail shooter further comprises a rod-shaped limiting piece, the periphery of the muzzle part is provided with a limiting through hole formed in the radial direction, the limiting piece is axially connected into the limiting through hole in a sliding mode, and when the sleeve abuts against the limiting piece stretching into the inner hole of the muzzle part in the axial direction, the firing pin rod is driven by the limiting piece to rotate. And a gap is reserved between the excitation cap and the excitation inclined surface along the axial direction of the sleeve. The utility model has better safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of nail gun devices and relates to a nail gun. Background Technology

[0002] A nail gun is a tool that uses the propellant gases from firing a nail cartridge as power to drive nails into a building structure. Nail guns are used in nail fastening technology, an advanced modern fastening technique that, compared to traditional methods, facilitates on-site and high-altitude operations, is quick to operate, and significantly reduces the labor intensity of construction workers.

[0003] For example, patent application number CN201920891201.3 discloses a power adjustment structure for a nail gun, which includes a nail tube, an adjustment tube, and a silencer tube. The nail tube passes through the adjustment tube and the outer side wall of the nail tube is in contact with the inner side wall of the adjustment tube. The nail tube has several through first adjustment holes, and the adjustment tube has several through second adjustment holes. Rotating the adjustment tube can connect the first adjustment holes with the corresponding second adjustment holes. The silencer tube is sleeved outside the adjustment tube, and there is a silencer cavity between the silencer tube and the adjustment tube.

[0004] However, the above-mentioned nail gun has some shortcomings: the nail gun usually needs to be replaced during use, and during this process, the firing pin mechanism may be activated and collide with the tail of the nail cartridge, which poses a safety hazard. Summary of the Invention

[0005] This utility model addresses the aforementioned problems in existing technologies by providing a nail gun. The technical problem this utility model aims to solve is that existing nail guns lack sufficient safety.

[0006] A nail gun includes a housing, a sleeve, and a firing pin rod. The housing is pistol-shaped, with both the muzzle and the sleeve being cylindrical. A columnar firing cap, capable of reciprocating radially along the firing pin rod, is provided on the outer periphery of the firing pin rod. The firing pin rod is axially slidably connected to the muzzle. The sleeve is slidably fitted around the outer periphery of the firing pin rod, and the firing pin rod is axially positioned with the sleeve via the firing cap. The inner wall of the muzzle has a firing ramp that guides the firing cap to retract inward, releasing the firing pin rod from the axial positioning with the sleeve. The nail gun further includes a rod-shaped limiting member. The outer periphery of the muzzle has a radially arranged limiting through hole, and the limiting member is axially slidably connected within the limiting through hole. When the sleeve abuts against the limiting member extending inward into the inner hole of the muzzle along the axial direction, a gap remains between the firing cap and the firing ramp along the axial direction of the sleeve.

[0007] The sleeve can be axially positioned by engaging with the protruding firing cap on the firing pin rod through an existing structure. The movement of the sleeve can then pre-tighten the firing pin rod by moving it backward. When the sleeve moves backward and the firing cap contacts the firing ramp, the firing cap retracts inward, releasing the engagement with the sleeve. After the firing pin rod is no longer constrained by the sleeve, its pre-tightening potential energy is released, allowing it to move rapidly relative to the sleeve to strike the primer of the nail gun cartridge, thus causing an explosion and propelling the nail gun cartridge at high speed. A radially arranged limiting through-hole is provided on the outer periphery of the muzzle, allowing a rod-shaped limiting component to slide within the limiting through-hole. Furthermore, the inner end of the limiting component can extend into the inner hole of the housing, so that when the sleeve moves backward, the travel of the inner end of the limiting component is constrained, preventing the firing cap from contacting the firing ramp. In this way, when performing operations such as changing cartridges, the user can adjust or press the limiting component to move inward to enter the safety mode. At this time, the limiting component can constrain the movement position of the firing cap, so that the firing cap is always kept within the safe activity area. When nailing is needed, the limiting component can be moved outward to release this mode. This helps to avoid the firing cap accidentally contacting the firing ramp with the sleeve, which could cause the firing pin rod to be fired and cause a safety accident, thus improving the safety of the nail gun.

[0008] In the aforementioned nail gun, the inner wall of the housing has an annular shoulder. When the limiting member extends inward into the inner hole of the housing, the side of the limiting member facing away from the sleeve is adjacent to or has a gap with the shoulder. Thus, when the limiting member is subjected to compression or impact from the sleeve, the rearward-facing end of the limiting member is supported and constrained by the shoulder, preventing excessive load from causing deformation or damage to the limiting member and extending the lifespan of the mechanism.

[0009] In the aforementioned nail gun, the wall of the limiting through-hole has an axially oriented, strip-shaped adjustment groove. A radially outwardly oriented locking block is integrally connected to the limiting member. The locking block is located within the adjustment groove and can reciprocate along the groove. This facilitates stroke control of the limiting member through the cooperation of the locking block and the adjustment groove, enabling precise switching between safety and firing modes, while preventing the limiting member from dislodging from the limiting through-hole.

[0010] In the aforementioned nail gun, the muzzle portion includes a cylindrical body and an annular firing ring. The firing bevel is located on the firing ring, which is coaxially embedded within the body. The firing bevel is prone to wear due to continuous contact and compression with the firing cap. Therefore, by independently replacing the firing ring, the firing bevel can be maintained at low cost, preventing the entire housing from becoming unusable.

[0011] The aforementioned nail gun also includes a reset spring, which is located within the limiting through hole and arranged axially along the limiting through hole. The two ends of the reset spring act on the limiting member and the housing, respectively. The inner end of the adjusting groove extends circumferentially along the limiting through hole, making the adjusting groove L-shaped. This allows the limiting member to always tend to move outward under the action of the reset spring, making the outward reset operation easier. The L-shaped adjusting groove facilitates pressing the limiting member inward and moving the locking block to the lower end of the adjusting groove for a safe mode. Then, controlling the rotation of the limiting member causes the locking block to embed into the bent section of the adjusting groove, thus positioning the limiting member along the axial direction of the limiting through hole. Under the force of the reset spring, the limiting member is stably maintained in the safe mode, eliminating the need for continuous pressing by the user, making operation easier and more convenient.

[0012] In the aforementioned nail gun, the adjusting groove extends radially through the limiting through hole, forming a through-hole. This allows the user to easily observe the position of the locking block within the adjusting groove from the outside, thus conveniently determining the current mode and ensuring ease of use and safety.

[0013] In the aforementioned nail gun, the outer end of the limiting member is disc-shaped and has a horizontal knob. This allows the user to control the rotation of the entire limiting member via the knob to switch between different modes, making operation more effortless and convenient.

[0014] In the aforementioned nail gun, there are at least two adjusting grooves evenly spaced along the circumference of the limiting through hole, and at least two locking blocks located within different adjusting grooves. This combination of multiple locking blocks and adjusting grooves ensures uniform force distribution and stable positioning of the limiting component, improving the stability of the adjustment accuracy.

[0015] In the aforementioned nail gun, the locking block is integrally connected to the outer end of the limiting member, making the axial cross-section of the limiting member shaped like a mountain. This increases the elastic deflection of the locking block, allowing it to deform smoothly and embed into the adjusting groove when the limiting member is inserted into the limiting through hole, making assembly more convenient.

[0016] In the aforementioned nail gun, the reset spring is sleeved around the periphery of the limiting member. This helps ensure that the force exerted by the reset spring on the limiting member remains at the center of the limiting member, preventing the limiting member from deviating. At the same time, the reset spring is also constrained by the position of the limiting member, making the reset structure stable and reliable.

[0017] Compared with the prior art, the advantages of this utility model are as follows:

[0018] When performing operations such as cartridge replacement, the user can adjust the limiting component to move inward to enter the safety mode. In this mode, the limiting component can restrict the movement of the firing cap, preventing the firing cap from firing. This effectively avoids the firing cap accidentally contacting the firing ramp as the sleeve moves, which could cause the firing pin rod to fire and cause a safety accident, thus improving the safety of the nail gun. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the safe mode in this embodiment.

[0020] Figure 2 This is a partial three-dimensional exploded view of the structure in this embodiment.

[0021] Figure 3 This is a three-dimensional cross-sectional schematic diagram of a partial structure in this embodiment.

[0022] Figure 4 This is a top-view structural diagram of the safe mode in this embodiment.

[0023] Figure 5 yes Figure 4 A schematic diagram of the AA cross-sectional structure.

[0024] Figure 6 yes Figure 5 Enlarged view of part B in the image.

[0025] Figure 7 This is a schematic diagram of a local three-dimensional structure under the excitation mode of this embodiment.

[0026] Figure 8 This is a magnified partial cross-sectional view of the excitation mode in this embodiment.

[0027] In the figure, 1. Shell; 11. Muzzle; 12. Activation slope; 13. Limiting through hole; 14. Shoulder; 15. Adjustment groove; 16. Main body; 17. Activation ring; 2. Sleeve; 3. Firing pin rod; 4. Activation cap; 5. Limiting component; 51. Locking block; 52. Knob; 6. Reset spring; 7. Activation spring; 8. Heat insulation sleeve. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figure 1 , Figure 2As shown, this nail gun includes a housing 1, which is pistol-shaped. The muzzle portion 11 of the housing 1 is cylindrical. The nail gun also includes a rod-shaped limiting member 5. The outer periphery of the muzzle portion 11 has a radially arranged limiting through hole 13. The limiting member 5 is axially slidably connected within the limiting through hole 13. Specifically, the wall of the limiting through hole 13 has two L-shaped adjusting grooves 15 arranged axially and evenly spaced along the circumference of the limiting through hole 13. The outer end of the limiting member 5 is disc-shaped, and two radially outwardly arranged locking blocks 51 are integrally connected to the outer end of the limiting member 5, making the axial cross-section of the limiting member 5 shaped like a mountain. The locking blocks 51 are located within the adjusting grooves 15 and can reciprocate along the adjusting grooves 15. Preferably, the adjusting grooves 15 are radially through the limiting through hole 13. The outer end of the limiting member 5 has a straight knob 52.

[0030] like Figure 3 As shown, the muzzle portion 11 includes a cylindrical body 16 and an annular excitation ring 17. An excitation ramp 12 is located on the excitation ring 17, which is coaxially embedded within the body 16. The inner hole of the excitation ring 17 and the inner hole of the body 16 form the inner hole of the muzzle portion 11. The excitation ring 17 has a conical excitation ramp 12. The limiting member 5 can move inward and extend into the inner hole of the excitation ring 17. The inner hole of the excitation ring 17 has an annular shoulder 14, which is arranged adjacent to the extending limiting member 5.

[0031] like Figure 4-6 As shown, this nail gun also includes a heat insulation sleeve 8, a sleeve 2, and a firing pin rod 3. The sleeve 2 is cylindrical, and the heat insulation sleeve 8 is indirectly connected to the sleeve 2. The firing pin rod 3 has a columnar firing cap 4 on its outer periphery that can reciprocate along the radial direction of the firing pin rod 3. The firing pin rod 3 is axially slidably connected to the muzzle portion 11. A firing spring 7 is abutted between the rear end of the firing pin rod 3 and the main body 16. The sleeve 2 is slidably sleeved on the outer periphery of the firing pin rod 3, and the firing pin rod 3 is axially positioned by engaging the firing cap 4 with the existing groove (not shown) on the upper part of the sleeve 2. The firing cap 4 can contact the firing inclined surface 12 and retract inward to release the axial positioning of the firing pin rod 3 and the sleeve 2. When the sleeve 2 abuts against the limiting member 5 that extends inward into the inner hole of the muzzle portion 11 along the axial direction, there is a gap between the firing cap 4 and the firing inclined surface 12 along the axial direction of the sleeve 2. At this point, the side of the limiting member 5 facing away from the sleeve 2 has only a gap with the shoulder 14. As the sleeve 2 continues to move backward, the limiting member 5 can be pressed against the shoulder 14. The nail gun also includes a reset spring 6, which is located inside the limiting through hole 13 and arranged along the axial direction of the limiting through hole 13. The two ends of the reset spring 6 act on the limiting member 5 and the housing 1 respectively, and the reset spring 6 is sleeved around the periphery of the limiting member 5.

[0032] like Figure 7 , Figure 8As shown, at this time, the limiting member 5 moves outward, causing the locking block 51 to move to the outer end of the adjusting groove 15. The lower end of the limiting member 5 is disengaged from the inner hole range of the excitation ring 17. The sleeve 2 can continue to move backward and compress the excitation spring 7. At the same time, the excitation cap 4 gradually begins to contact the excitation inclined surface 12 and guides the excitation cap 4 to retract. Finally, the locking relationship between the excitation cap 4 and the strip groove on the sleeve 2 can be released, allowing the firing pin rod 3 to move and excite.

[0033] During the reloading operation, the user can press down and rotate the limiting member 5 so that the locking block 51 is embedded in the branch at the lower end of the adjusting groove 15, thereby entering the safe mode. At this time, the limiting member 5 restricts the stroke of the sleeve 2, so that the firing cap 4 is always kept in the safe activity area and will not contact the firing slope 12 in advance, thus allowing for safe reloading. When nails are needed, the user can operate the limiting member 5 to rotate back. Under the action of the reset spring 6, the limiting member 5 can move outward to enter the mode. Finally, the user can control the sleeve 2 to move backward to fire the nails.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A nail gun, comprising a housing (1), a sleeve (2), and a firing pin rod (3), wherein the housing (1) is pistol-shaped, and both the muzzle portion (11) of the housing (1) and the sleeve (2) are cylindrical; the firing pin rod (3) has a cylindrical firing cap (4) on its outer periphery that can reciprocate radially along the firing pin rod (3); the firing pin rod (3) is axially slidably connected to the muzzle portion (11); the sleeve (2) is slidably fitted onto the outer periphery of the firing pin rod (3); and the firing pin rod (3) is axially positioned with respect to the sleeve (2) by the firing cap (4); the inner wall of the muzzle portion (11) has a firing ramp (12) that guides the firing cap (4) to retract inward, thereby releasing the axial positioning of the firing pin rod (3) from the sleeve (2); characterized in that, The nail gun also includes a rod-shaped limiting member (5). The outer periphery of the muzzle (11) has a radially arranged limiting through hole (13). The limiting member (5) is axially slidably connected in the limiting through hole (13). When the sleeve (2) abuts against the limiting member (5) extending inward into the inner hole of the muzzle (11) along the axial direction, the excitation cap (4) is spaced apart from the excitation inclined surface (12) along the axial direction of the sleeve (2).

2. The nail gun according to claim 1, characterized in that, The inner wall of the housing (1) has an annular shoulder (14). When the limiting member (5) extends into the inner hole of the housing (1), the side of the limiting member (5) away from the sleeve (2) is adjacent to or has a gap with the shoulder (14).

3. The nail gun according to claim 1 or 2, characterized in that, The wall of the limiting through hole (13) has an axially arranged strip-shaped adjustment groove (15), and the limiting member (5) is integrally connected with a radially outwardly arranged locking block (51). The locking block (51) is located in the adjustment groove (15) and can move back and forth along the adjustment groove (15).

4. The nail gun according to claim 1 or 2, characterized in that, The muzzle portion (11) includes a cylindrical body (16) and an annular excitation ring (17), with the excitation ramp (12) located on the excitation ring (17), which is coaxially embedded in the body (16).

5. The nail gun according to claim 3, characterized in that, The nail gun also includes a reset spring (6), which is located in the limiting through hole (13) and arranged along the axial direction of the limiting through hole (13). The two ends of the reset spring (6) act on the limiting member (5) and the housing (1) respectively. The inner end of the adjusting groove (15) extends circumferentially along the limiting through hole (13) so that the adjusting groove (15) is L-shaped.

6. The nail gun according to claim 3, characterized in that, The adjusting groove (15) extends radially through the limiting through hole (13) and is in the shape of a through hole.

7. The nail gun according to claim 5, characterized in that, The outer end of the limiting member (5) is disc-shaped and has a knob (52) in the shape of a straight line.

8. The nail gun according to claim 3, characterized in that, The adjustment groove (15) has at least two locations and is evenly spaced along the circumference of the limiting through hole (13), and the locking block (51) has at least two locations and is located in different adjustment grooves (15).

9. The nail gun according to claim 8, characterized in that, The card block (51) is integrally connected to the outer end of the limiting member (5), so that the axial cross section of the limiting member (5) is mountain-shaped.

10. The nail gun according to claim 5, characterized in that, The reset spring (6) is sleeved around the limiting member (5).

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