A highly stable nail gun
By introducing a multi-directional constraint structure of anti-deviation rod and guide rod into the nail gun, and the axial constraint of the energy storage spring by the sleeve, the problem of radial piston deviation is solved, the stability and reliability of the nail gun are improved, and the maintenance process is simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI HNA ELECTRIC CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-31
AI Technical Summary
The piston of existing nail guns is prone to radial displacement due to uneven force during reciprocating motion, which can damage the coaxiality of the firing pin and the barrel, affecting the construction accuracy and potentially causing malfunctions.
A spatial multi-directional constraint structure is adopted, which combines anti-deviation rods and guide rods to limit the radial displacement of the piston, and the energy storage spring is axially constrained by a sleeve to ensure the stable movement of the piston and the firing pin.
The straightness of the piston and the coaxiality of the firing pin and the barrel have been improved, enhancing the working stability and reliability of the nail gun, while also facilitating quick maintenance and fault detection.
Smart Images
Figure CN224575601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fastening tools, specifically a highly stable nail gun. Background Technology
[0002] A nail gun is a commonly used fastening tool. Its drive mechanism stores energy through a compressed energy storage spring. When the spring releases, the piston drives the firing pin at high speed, completing the nail-firing action. To ensure the piston moves in a predetermined direction, most existing nail guns use a guide rod for guidance in their firing mechanism.
[0003] However, under the action of the drive structure, when the piston reciprocates along the guide rod, it is prone to radial displacement due to uneven force, such as the lateral component of the driving impact force and the fluctuation of spring force. When the displacement exceeds a certain level, the coaxiality between the firing pin and the nail gun barrel is disrupted, which will lead to deviation in the nail firing position, affecting the construction accuracy, and may even cause the firing pin to get stuck in the barrel, causing nail gun malfunction. Utility Model Content
[0004] The purpose of this invention is to provide a highly stable nail gun that can improve the stability of the piston during reciprocating motion, avoid deviation of the movement path, thereby ensuring the coaxiality of the firing pin and the nail gun barrel, and improving the stability and reliability of the nail gun operation.
[0005] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a highly stable nail gun, including a shell; A driving structure, wherein the driving structure is disposed at the bottom of the housing; A firing pin, which is slidably disposed within the housing; A ramming structure, wherein the ramming structure is fixedly connected to the firing pin and connected to the driving structure; An anti-deviation structure is provided between the outer shell and the ramming structure, which can improve the stability of the movement of the ramming structure.
[0006] In some embodiments, the ramming structure includes a stop block disposed on one side of the housing; A guide rod is provided between the stop block and the outer casing; A piston, which is sleeved on the guide rod and fixedly connected to the firing pin; An energy storage spring is disposed between the piston and the outer casing, and is coaxially sleeved on the guide rod.
[0007] In some embodiments, the anti-deviation structure includes an anti-deviation rod disposed between the stop block and the housing, and parallel to the guide rod, and the anti-deviation rod passes through the piston.
[0008] In some embodiments, there are two anti-deviation rods, which are located outside the energy storage spring.
[0009] In some embodiments, the angle between the line connecting the central axes of the two anti-deviation rods and the horizontal plane is 45°.
[0010] In some embodiments, the anti-deviation structure further includes a first sleeve, which is disposed on the side of the piston away from the stop block; The second sleeve is located on the side of the outer casing away from the piston. The energy storage spring is provided between the first sleeve and the second sleeve, and the guide rod passes through the first sleeve and the second sleeve.
[0011] In some embodiments, the cross-sections of both the first sleeve and the second sleeve are convex.
[0012] In some embodiments, the housing includes a casing; An opening is provided at the top of the housing; A cover plate, which is provided at the opening and is detachably connected to the housing.
[0013] In some embodiments, the cover plate is an acrylic sheet.
[0014] In summary, this utility model has the following beneficial effects: (1) This utility model uses two anti-deviation rods and cooperates with the guide rod to form a spatial multi-directional constraint structure. When the piston moves, the anti-deviation rod restricts the piston's degree of freedom in the direction perpendicular to the guide rod, effectively resisting external interference forces such as driving impact force and vibration. It can distribute the lateral force on the piston to each anti-deviation rod and guide rod, reduce the radial offset of the piston, thereby improving the straightness of the nail structure movement, ensuring the coaxiality of the firing pin and the nail gun barrel, and improving the stability and reliability of the nail gun operation.
[0015] (2) This utility model forms an axial constraint on the energy storage spring by adapting the first sleeve and the second sleeve to the end of the energy storage spring. During the compression and extension of the spring, it prevents the energy storage spring from shifting laterally and twisting, and ensures that the energy storage spring force is stably transmitted along the axial direction.
[0016] (3) The present invention uses an acrylic sheet cover that is detachably sealed to the opening at the top of the shell. Workers can quickly open the cover without disassembling the entire shell to inspect, clean, and perform simple repairs on the internal structure of the nail gun, thereby improving maintenance efficiency and ensuring the continuity of construction. In addition, the transparency of the acrylic sheet allows workers to directly observe the working status of the internal components of the nail gun, making it easier to detect potential faults in a timely manner and deal with them, further improving the reliability and ease of use of the nail gun. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention with the cover plate removed; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 This is a schematic diagram of the drive structure, striker, bolt structure, and anti-deviation structure of this utility model. Figure 5 This is a schematic diagram of the striking pin, striking nail structure, and anti-deviation structure of this utility model.
[0018] In the diagram: 1. Outer shell; 11. Housing; 12. Opening; 13. Cover plate; 14. Mounting block; 2. Drive structure; 3. Strike pin; 4. Strike pin structure; 41. Stop block; 42. Guide rod; 43. Piston; 44. Energy storage spring; 5. Anti-deviation structure; 51. Anti-deviation rod; 52. First sleeve; 53. Second sleeve. Detailed Implementation
[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0020] refer to Figure 1-5 A highly stable nail gun includes a housing 1, a drive structure 2, a firing pin 3, a nail-shooting structure 4, and an anti-deviation structure 5. The drive structure 2 is located at the bottom of the housing 1 and serves as the power source for the nail gun. It can be a combination of an electric motor, a cam mechanism, or a pneumatic device. By converting electrical energy or other energy into mechanical energy, it provides power for the movement of the nail-shooting structure 4, driving the nail-shooting structure 4 to drive the firing pin 3 to complete the nail-shooting action. The firing pin 3 is slidably located inside the housing 1. One side of the nail-shooting structure 4 is fixedly connected to the firing pin 3. Driven by the nail-shooting structure 4, the firing pin 3 reciprocates along a predetermined trajectory inside the housing 1 to achieve nail firing and resetting. The other side of the nail-shooting structure 4 can be fixed to the housing 1 via a mounting block 14. The nail-shooting structure 4 is connected to the drive structure 2, which can transmit the power of the drive structure 2 to the nail-shooting structure 4. The anti-deviation structure 5 is located between the housing 1 and the nail-shooting structure 4, constraining and guiding the movement of the nail-shooting structure 4 in various ways, thereby improving the stability of the movement of the nail-shooting structure 4 and ensuring the accuracy of nail shooting and the reliability of the equipment.
[0021] In some embodiments, the nail gun structure 4 includes a stop block 41, a guide rod 42, a piston 43, and an energy storage spring 44. The stop block 41 is located on one side of the housing 1 and can be fixedly connected by bolts or welding, providing a mounting base for components such as the guide rod 42 and the anti-deviation rod 51, and limiting the stroke of the piston 43 to prevent excessive movement of the piston 43 from damaging the internal structure of the nail gun. The guide rod 42 is located between the stop block 41 and the mounting block 14, providing guidance for the movement of the piston 43. The guide rod 42 can be a high-precision cylindrical rod made of high-quality alloy steel with a chrome-plated surface, exhibiting good wear resistance and smoothness. The piston 43 is sleeved on the guide rod. The piston 43 can slide axially along the guide rod 42 on the rod 42 to ensure the direction of movement of the piston 43. The piston 43 is sleeved on the guide rod 42 and fixedly connected to the firing pin 3. The connection can be made by means of mortise and tenon joint, pin connection, etc. Under the action of the drive structure 2, the piston 43 reciprocates along the guide rod 42, while compressing or extending the energy storage spring 44 to realize the storage and release of energy, thereby driving the firing pin 3 to complete the nail firing and reset actions. The fit clearance between the piston 43 and the inside of the outer shell 1 can be designed according to the actual situation to balance the flexibility of movement and the limitation of radial offset. The energy storage spring 44 is located between the piston 43 and the outer shell 1 and is coaxially sleeved on the guide rod 42. During the nail firing process, the piston 43 compresses the energy storage spring 44 to store elastic potential energy; when the force of the drive structure 2 is removed, the energy storage spring 44 releases the elastic potential energy, pushing the piston 43 and the firing pin 3 to reset. The elastic force of the energy storage spring 44 is designed according to the actual situation to ensure that the movement speed and impact force of the firing pin structure 4 meet the requirements of nail firing.
[0022] In some embodiments, the anti-deviation structure 5 includes an anti-deviation rod 51, which is disposed between the stop block 41 and the mounting block 14 and is parallel to the guide rod 42. The anti-deviation rod 51 passes through the piston 43. By constraining the piston 43 during movement, the deviation of the piston 43 can be prevented, thereby improving the straightness and stability of the piston 43 movement.
[0023] In some embodiments, there are two anti-deviation rods 51, which are located outside the energy storage spring 44. They can provide a certain degree of protection for the energy storage spring 44, preventing it from being excessively deformed during movement. At the same time, the two anti-deviation rods 51 can enhance the guidance of the piston 43 during movement, further enhancing the stability of the piston 43's movement. They also cooperate with the guide rod 42 to form constraints in multiple directions.
[0024] In some embodiments, the angle between the line connecting the central axes of the two anti-deviation rods 51 and the horizontal plane is 45°, which can constrain the piston 43 from different directions to form a stable support structure, thereby limiting the radial displacement and swing of the piston 43.
[0025] In some embodiments, the anti-deviation structure 5 further includes a first sleeve 52 and a second sleeve 53. The first sleeve 52 is located on the side of the piston 43 away from the stop block 41 and can be fixedly connected to the piston 43 by means of interference fit, threaded connection, etc. The second sleeve 53 is located on the side of the outer shell 1 away from the piston 43 and is fixedly connected to the mounting block 14. An energy storage spring 44 is provided between the first sleeve 52 and the second sleeve 53, and a guide rod 42 is provided through the first sleeve 52 and the second sleeve 53 to improve the coaxiality between the energy storage spring 44 and the guide rod 42, thereby further enhancing the accuracy of guidance and the overall stability of the structure. Both the first sleeve 52 and the second sleeve 53 can be injection molded from polyoxymethylene, which has excellent wear resistance and can reduce frictional loss with the energy storage spring 44.
[0026] In some embodiments, the cross-sections of the first sleeve 52 and the second sleeve 53 can both be convex, which can better fit the end shape of the energy storage spring 44, accurately position and constrain the end of the energy storage spring 44, prevent the energy storage spring 44 from shifting laterally during compression and extension, avoid uneven force on the energy storage spring 44 and cause problems such as twisting and deformation, thereby improving the stability of the movement of the ramming structure 4. In some embodiments, the piston 43 may be a sleeve-like structure that is inserted into the first sleeve 52 to improve the coaxiality with the energy storage spring 44. Ear plates are provided on both sides, with the two ear plates located at the bottom and top of the sleeve respectively. Anti-deviation rod 51 is provided through the ear plates, and an L-shaped plate is provided at the bottom to connect with the drive structure 2 to receive the power transmitted by the drive structure 2 and realize the movement of the piston 43.
[0027] In some embodiments, the housing 1 includes a housing 11, an opening 12, and a cover plate 13. The housing 11 may be made of polyamide resin and has sufficient strength and rigidity to withstand the impact and vibration when the nail gun is working. The interior of the housing 11 is a hollow structure for installing components such as the drive structure 2, the firing pin 3, the firing pin structure 4, and the anti-deviation structure 5. The housing 11 can be assembled from multiple loose parts by bolts. The specific design can be designed according to the actual situation to facilitate the assembly of the nail gun. The opening 12 is located on the top of the housing 11, providing an operating channel for the installation, inspection and maintenance of internal components. The size and shape of the opening 12 are adapted to the cover plate 13 to facilitate the installation and removal of the cover plate 13. The cover plate 13 is sealed to the opening 12 and is detachably connected to the housing 11. The cover plate 13 can be made of acrylic sheet, which has good transparency, making it easy to observe the working status of the internal structure of the nail gun, such as the movement of the impact nail structure 4 and the deformation state of the energy storage spring 44. The cover plate 13 can be sealed to the opening 12 by bolts or other detachable connection methods. When it is necessary to inspect the internal components, the cover plate 13 can be quickly removed, which is simple to operate and improves maintenance efficiency.
[0028] The specific working principle is as follows: In practical use, the trigger can be pulled to activate the drive structure 2, which is existing technology and will not be described in detail here. The drive structure 2 provides power to the piston 43. Under the action of the drive structure 2, the piston 43 moves along the constraint path formed by the guide rod 42 and the anti-deviation rod 51, compressing the energy storage spring 44 to store energy. When the force of the drive structure changes (such as the cam mechanism disengaging), the energy storage spring 44 releases its elastic potential energy, pushing the piston 43 to move in the opposite direction, driving the firing pin 3 to complete the nail firing action and then reset. At this time, the first sleeve 52 and the second sleeve 53 cooperate with the anti-deviation rod 51 to constrain the lateral deviation of the energy storage spring 44 during compression and extension, avoiding uneven force on the energy storage spring 44 and problems such as twisting and deformation, ensuring the stability of the firing pin structure 4 and improving the accuracy of nail firing.
[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A high-stability nail gun, characterized in that: Including the outer casing (1); A drive structure (2) is provided at the bottom of the outer shell (1); A striking pin (3) is slidably disposed within the outer casing (1); A ramming structure (4) is fixedly connected to the ramming pin (3) and connected to the driving structure (2); Anti-deviation structure (5) is provided between the outer shell (1) and the ramming structure (4), which can improve the stability of the movement of the ramming structure (4).
2. The high-stability nail gun according to claim 1, characterized in that: The ramming structure (4) includes a stop (41), which is located on one side of the outer shell (1); Guide rod (42), the guide rod (42) is disposed between the stop block (41) and the outer shell (1); Piston (43), which is sleeved on the guide rod (42) and fixedly connected to the firing pin (3); An energy storage spring (44) is disposed between the piston (43) and the outer shell (1) and is coaxially sleeved on the guide rod (42).
3. The high-stability nail gun according to claim 2, characterized in that: The anti-deviation structure (5) includes an anti-deviation rod (51), which is located between the stop block (41) and the outer shell (1) and is parallel to the guide rod (42). The anti-deviation rod (51) passes through the piston (43).
4. The high-stability nail gun according to claim 3, characterized in that: The anti-deviation rod (51) consists of two rods and is located outside the energy storage spring (44).
5. The high-stability nail gun according to claim 4, characterized in that: The angle between the line connecting the central axes of the two anti-deviation rods (51) and the horizontal plane is 45°.
6. The high-stability nail gun according to claim 2, wherein: The anti-deviation structure (5) further includes a first sleeve (52), which is located on the side of the piston (43) away from the stop block (41); The second sleeve (53) is located on the side of the outer shell (1) away from the piston (43). The energy storage spring (44) is provided between the first sleeve (52) and the second sleeve (53), and the guide rod (42) is provided through the first sleeve (52) and the second sleeve (53).
7. The high-stability nail gun according to claim 6, characterized in that: The cross-sections of the first sleeve (52) and the second sleeve (53) are both convex.
8. The high-stability nail gun according to claim 1, wherein: The outer casing (1) includes a housing (11); An opening (12) is provided at the top of the housing (11); A cover plate (13) is provided at the opening (12) and is detachably connected to the housing (11).
9. The high-stability nail gun according to claim 8, characterized in that: The cover plate (13) is an acrylic plate.