A gun needle lifting mechanism and a nail gun

Abstract

The utility model relates to nail gun technical field especially a kind of gun needle lifting mechanism and shoot nail gun, comprising: gun needle and drive body;Several clamping tooth parts are formed in the side of the gun needle, several clamping tooth parts are configured as multiple driving teeth and one tail tooth, the height of the tail tooth is greater than the height of the driving tooth;Wherein, the drive body has several shaft body parts with the clamping tooth part clamping, the outer periphery of the drive body also has the avoidance mouth of avoiding the clamping tooth part, in the utility model, by the several clamping tooth parts on gun needle configuration one tail tooth, since the height of tail tooth is greater than the driving tooth in front, when the drive body rotates, when the shaft body part of tail part contacts tail tooth, by the part of tail tooth, the further lifting of gun needle can be realized, so the problem that the driving tooth in front collides with shaft body part when gun needle shoots out instantaneously can be avoided, so as to improve the stability of gun needle movement.

Description

Technical Field

[0001] This utility model relates to the field of nail gun technology, and in particular to a needle lifting mechanism and a nail gun. Background Technology

[0002] As a highly efficient fastening tool, nail guns are widely used in construction, decoration and other fields. Their core components include cylinders, pistons, lifting mechanisms and nails. During operation, the lifting mechanism lifts the nail, causing the piston at the tail of the nail to compress the gas inside the cylinder. When the lifting mechanism separates from the nail, the compressed gas is released instantly, pushing the nail out at high speed, thereby ejecting the nail from the nozzle to complete the operation. In existing technologies, the cooperation between the lifting mechanism and the nail often adopts an irregular gear and rack meshing structure, and the separation of the gear and rack controls the firing of the nail.

[0003] However, this design has obvious flaws: due to the extremely high speed of the gun needle, at the moment the gear and rack separate, the high-speed forward-rushing gun needle will drive the rear rack part to move forward, causing the rack to collide violently with the separated gear. This impact will not only cause wear and deformation of the gear and rack teeth, but also cause fatigue damage to the components after long-term use, seriously affecting the working stability and service life of the nail gun and increasing the equipment maintenance cost.

[0004] Therefore, how to optimize and improve the cooperation structure between the mechanism and the needle to avoid the impact problem at the moment of separation has become an urgent technical problem to be solved in the current improvement of nail gun structure. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the violent impact between the rack and the separated gear, and to propose a needle lifting mechanism and a nail gun.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: Design a needle lifting mechanism and a nail gun, including: The gun needle and its driving mechanism; A plurality of locking teeth are formed on the side of the gun needle, and the plurality of locking teeth are configured as multiple driving teeth and a tail tooth, wherein the height of the tail tooth is greater than the height of the driving teeth. The driving body has several shaft portions that engage with the locking teeth, and the outer periphery of the driving body also has a clearance opening to avoid the locking teeth.

[0007] Furthermore, this also includes the muzzle mount and piston; The gun needle and the muzzle mount are movably connected, and the piston is fixedly connected to the end of the gun needle away from the muzzle mount.

[0008] Furthermore, the side of the nozzle holder is provided with a needle hole for the needle to pass through and a limiting groove communicating with the needle hole. A positioning wing is fixedly installed on the side of the needle, and the positioning wing is slidably connected in the limiting groove.

[0009] Furthermore, the drive body includes a mounting base and a chassis fixed below the mounting base, with the shaft portion mounted between the chassis and the mounting base.

[0010] Furthermore, the mounting base includes: Upper plate body, bushing part and lower plate body; The bushing is used to coaxially connect and space between the upper and lower disc bodies, so as to create an installation port between the upper and lower disc bodies.

[0011] Furthermore, the bottom of the bushing penetrates the chassis and is locked by a locking member, and the inner hole of the bushing is configured as a polygonal hole.

[0012] Furthermore, the shaft portion includes a shaft rod that passes through and connects the upper plate, the lower plate, and the chassis, and a bushing is sleeved on the outer side of the shaft rod.

[0013] Furthermore, the bushing corresponding to the drive tooth is configured as a flat bushing with a smooth outer periphery, and the bushing corresponding to the tail tooth is configured as a flower-shaped bushing with an intermittent concave-convex structure on its outer periphery.

[0014] Furthermore, reinforcing protrusions are formed on both the upper and lower surfaces of the gun needle.

[0015] In addition, this utility model also proposes a nail gun, which includes the aforementioned needle lifting mechanism.

[0016] The present invention provides a needle lifting mechanism and a nail gun, the advantages of which are as follows: In this invention, by configuring a tail tooth on several locking teeth on the needle, since the height of the tail tooth is greater than that of the front driving tooth, when the driving body rotates, when the shaft part at the tail end contacts the tail tooth, the needle can be further lifted by means of the higher part of the tail tooth. This avoids the problem of the front driving tooth colliding with the shaft part when the needle is fired instantaneously, thus improving the stability of the needle movement. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a cross-sectional view of the driving body of this utility model; Figure 4 This is a three-dimensional view of the driving body of this utility model.

[0018] In the diagram: 1. Gun needle; 10. Clamping tooth; 101. Drive tooth; 102. Tail tooth; 11. Positioning wing; 12. Reinforcing protrusion; 2. Drive body; 20. Shaft body; 201. Shaft; 202. Bushing; 21. Clearance opening; 22. Mounting seat; 221. Upper plate body; 222. Bushing body; 223. Lower plate body; 224. Mounting opening; 23. Chassis; 3. Nozzle holder; 31. Limiting groove; 4. Piston. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-4 As an embodiment of the utility model, a gun needle lifting mechanism is disclosed. Specifically, the lifting mechanism includes a gun needle 1 and a driving body 2. Of course, the gun needle 1 and the driving body 2 are installed in the housing of the nail gun. The driving body 2 is used to connect the motor and the gearbox to achieve rotation, thereby realizing the lifting control of the gun needle 1. This method is a conventional means for those skilled in the art, and will not be described in detail here. A plurality of locking teeth 10 are formed on the side of the gun needle 1. The plurality of locking teeth 10 are configured as a plurality of driving teeth 101 and a tail tooth 102. The height of the tail tooth 102 is greater than the height of the driving teeth 101. In this embodiment, the height of the tail tooth 102 may be one to three millimeters higher than the end face height of the driving teeth 101. Those skilled in the art can also make adaptive adjustments to this value according to the requirements, and no limitation is made here. The driving body 2 has a plurality of shaft portions 20 that engage with the toothed portion 10, and the outer periphery of the driving body 2 also has a clearance opening 21 for avoiding the toothed portion 10.

[0021] In other words, in this invention, by configuring a tail tooth 102 on a plurality of locking teeth 10 on the gun needle 1, since the height of the tail tooth 102 is greater than that of the front drive tooth 101, when the drive body 2 rotates, when the tail shaft part 20 contacts the tail tooth 102, the gun needle 1 can be further lifted by means of the higher part of the tail tooth 102. This avoids the problem of the front drive tooth 101 colliding with the shaft part 20 when the gun needle 1 is fired instantaneously, thereby improving the stability of the movement of the gun needle 1.

[0022] In some embodiments, the present invention also includes a muzzle holder 3 and a piston 4; The gun needle 1 and the muzzle mount 3 are movably connected. The piston 4 is fixedly connected to the end of the gun needle 1 away from the muzzle mount 3. Specifically, in this embodiment, the muzzle mount 3 is used to guide and support the gun needle 1. Of course, the muzzle mount 3 should be connected to the muzzle structure and the magazine. The specific connection method can refer to the existing technology, which will not be elaborated here. In addition, in this embodiment, the piston 4 is movably connected to the cylinder. When the gun needle 1 is lifted, the piston 4 compresses the gas in the cylinder to increase the pressure. After the gun needle 1 is lifted, the compressed gas pushes out the piston 4 to drive the gun needle 1 to perform the firing action.

[0023] Furthermore, in this embodiment, the side of the nozzle holder 3 is provided with a needle hole for the needle 1 to pass through and a limiting groove 31 communicating with the needle hole. A positioning wing 11 is fixedly installed on the side of the needle 1. The positioning wing 11 is slidably connected in the limiting groove 31. That is, in this embodiment, the sliding cooperation between the positioning wing 11 and the limiting groove 31 can realize the movement guidance of the needle 1, thus avoiding the problem of circumferential rotation of the needle 1.

[0024] In a preferred embodiment, the drive body 2 of the present invention includes a mounting base 22 and a chassis 23 fixed below the mounting base 22, and the shaft portion 20 is mounted between the chassis 23 below the mounting base 22.

[0025] Specifically, the mounting base 22 in this embodiment includes: Upper plate 221, bushing 222, and lower plate 223; The bushing 222 is used to coaxially connect and support the upper plate 221 and the lower plate 223, so that an installation port 224 is formed between the upper plate 221 and the lower plate 223. Of course, in this embodiment, the upper plate 221, the bushing 222 and the lower plate 223 can be designed as an integral molding structure.

[0026] In this embodiment, the mounting base 22 and the chassis 23 can be shaped like a plum blossom. The shaft part 20 is installed at the petal structure of each plum blossom structure. Specifically, the plum blossom structure in this embodiment adopts an eight-petal structure design, and the locking tooth part 10 and the shaft part 20 are both configured with seven petals. The clearance 21 is positioned between the two shaft portions 20 at the beginning and end, i.e., a blank space is reserved between the two shaft portions 20 at the beginning and end to form a clearance 21. The clearance 21 is designed so that when the gun needle 1 is fired, the clearance 21 can be aligned with the aforementioned locking tooth portion 10, thus ensuring the stable movement of the gun needle 1 and avoiding impact interference problems.

[0027] Of course, considering the ease of assembly of the mounting base 22 and the chassis 23, the bottom of the bushing 222 in this utility model penetrates the chassis 23 and is locked by a locking member. The inner hole of the bushing 222 is configured as a polygonal hole. Optionally, the locking member in this embodiment is a snap ring. An annular groove is provided on the outer side of the bottom of the bushing 222. The snap ring is fitted in the annular groove to connect and limit the bushing 222 and the chassis 23. In addition, the polygonal hole design is adopted to connect with the output shaft of the gearbox to achieve circumferential locking transmission.

[0028] In some embodiments, the shaft portion 20 of this utility model includes a shaft 201 that passes through and connects the upper plate 221, the lower plate 223, and the chassis 23. A bushing 202 is sleeved on the outer side of the shaft 201. The bushing 202 and the shaft 201 are preferably connected by a rotatable connection. The two ends of the shaft 201 can be fixed by a riveting method to ensure the connection stability between the components.

[0029] Specifically, in this embodiment, the bushing 202 corresponding to the drive tooth 101 is configured as a flat bushing with a smooth outer periphery, and the bushing 202 corresponding to the tail tooth 102 is configured as a flower-shaped bushing with an intermittent concave-convex structure on its outer periphery.

[0030] It should be noted that in this embodiment, the bushing 202 corresponding to the tail tooth 102 is designed as a flower-shaped bushing. The purpose is that when the bushing 202 and the tail tooth 102 are separated instantaneously, the driving tooth 101 behind will follow the gun needle 1 and be shot forward. The flower-shaped bushing can prevent the driving tooth 101 behind from colliding with it. Furthermore, even if the driving tooth 101 and the flower-shaped bushing collide, the driving tooth 101 can pass smoothly through thanks to the concave and convex structure on the surface of the flower-shaped bushing without damaging the driving tooth 101 or the flower-shaped bushing. Of course, the other drive teeth 101 also adopt the design of flat bushings. The flat bushings roll with the drive teeth 101, which can reduce tooth damage and thus greatly increase the service life of the entire drive teeth 101.

[0031] Furthermore, the upper and lower surfaces of the gun needle 1 in this invention are both formed with reinforcing protrusions 12. In this embodiment, the reinforcing protrusions 12 are set as arc-shaped protrusions that extend along the length of the gun needle 1. By adopting the design of the reinforcing protrusions 12, the deformation of the gun needle 1 under stress can be reduced, thereby achieving the purpose of improving the strength of the gun needle 1.

[0032] In addition, this utility model also proposes a nail gun, which includes the aforementioned needle lifting mechanism.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A gun needle lifting mechanism, characterized in that, include: Gun needle (1) and drive body (2); A plurality of locking teeth (10) are formed on the side of the gun needle (1), and the plurality of locking teeth (10) are configured as a plurality of driving teeth (101) and a tail tooth (102), wherein the height of the tail tooth (102) is greater than the height of the driving teeth (101). The driving body (2) has a plurality of shaft portions (20) that engage with the toothed portion (10), and the outer periphery of the driving body (2) also has a clearance opening (21) that avoids the toothed portion (10).

2. The needle lifting mechanism according to claim 1, characterized in that: It also includes the muzzle mount (3) and the piston (4); The gun needle (1) and the muzzle mount (3) are movably connected, and the piston (4) is fixedly connected to the end of the gun needle (1) away from the muzzle mount (3).

3. The needle lifting mechanism according to claim 2, characterized in that: The gun nozzle holder (3) has a needle hole for the gun needle (1) to pass through and a limiting groove (31) that connects to the needle hole. A positioning wing (11) is fixedly installed on the side of the gun needle (1), and the positioning wing (11) is slidably connected in the limiting groove (31).

4. The needle lifting mechanism according to claim 1, characterized in that: The drive body (2) includes a mounting base (22) and a chassis (23) fixed below the mounting base (22), and the shaft part (20) is installed between the chassis (23) below the mounting base (22).

5. The needle lifting mechanism according to claim 4, characterized in that: The mounting base (22) includes: Upper plate (221), bushing (222) and lower plate (223); The bushing (222) is used to coaxially connect and spacedly support the upper plate (221) and the lower plate (223) so that an installation port (224) is formed between the upper plate (221) and the lower plate (223).

6. The needle lifting mechanism according to claim 5, characterized in that: The bottom of the bushing (222) extends through the chassis (23) and is locked by a locking member. The inner hole of the bushing (222) is configured as a polygonal hole.

7. A needle lifting mechanism according to claim 5, characterized in that: The shaft part (20) includes a shaft (201) that passes through and connects the upper plate (221), the lower plate (223) and the chassis (23), and a bushing (202) is sleeved on the outside of the shaft (201).

8. A needle lifting mechanism according to claim 7, characterized in that: The bushing (202) corresponding to the drive tooth (101) is configured as a flat bushing with a smooth outer periphery, and the bushing (202) corresponding to the tail tooth (102) is configured as a flower-shaped bushing with an intermittent concave-convex structure on the outer periphery.

9. A needle lifting mechanism according to any one of claims 1-8, characterized in that: The upper and lower surfaces of the needle (1) are both formed with reinforcing protrusions (12).

10. A nail gun, characterized in that, Includes the needle lifting mechanism as described in any one of claims 1-9.

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