Nail gun

Abstract

The utility model discloses a nail gun, including the gun body, the striker that sets up in the gun body, be used for driving the piston of the reciprocating motion of striker, and set up on the guide plate of gun body, the guide plate is equipped with the guide channel for the striker passes through, the side of guide channel to striker is the opening, the striker passes through the opening and is contained in the guide channel. The guide channel forms the stable radial support to the striker, ensures that the striker always keeps linear motion in the whole reciprocating motion, eliminates the trajectory deviation of shooting nail caused by the deviation of striker, and the shooting precision and consistency have been improved significantly. By limiting the radial deviation of striker, also effectively avoided the abnormal friction and the collision of striker and surrounding parts, reduced the wear rate of striker itself and its related moving parts, thereby prolonged the service life of whole gun.

Description

Technical Field

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

[0002] Nail guns, as a common fastening tool, are widely used in construction, decoration, and other fields. Their working principle typically involves a drive mechanism propelling a firing pin in a high-speed reciprocating motion, thereby firing the nail. In existing technology, the firing pin is usually driven by a piston and reciprocates within the gun body. However, because the firing pin itself is a slender rod-like structure, it is prone to radial deviation or wobbling during high-speed movement, especially when its stroke is long or when subjected to asymmetrical forces.

[0003] This radial offset can cause a series of problems. First, it directly affects the firing accuracy of the nail, causing the nail to fail to fly along the predetermined trajectory, thus affecting the construction quality. Second, the offset of the firing pin can cause it to have undue contact and friction with surrounding components, which can aggravate the wear of the firing pin itself and related components inside the gun body, reducing the service life of the tool. In addition, severe offset may also cause jamming or impact noise, affecting the user experience and equipment stability. Utility Model Content

[0004] To address the technical problem of the firing pin of existing nail guns being prone to deviation, this utility model proposes a nail gun in which the guide channel of the guide plate forms a stable radial support for the firing pin, ensuring that the firing pin always maintains a straight line during the entire reciprocating motion, thus eliminating the nail trajectory deviation caused by the firing pin deviation.

[0005] The technical solution adopted by this utility model is as follows: A nail gun includes a gun body, a firing pin disposed in the gun body, a piston for driving the firing pin to reciprocate, and a guide plate disposed on the gun body. The guide plate has a guide channel for the firing pin to pass through. The side of the guide channel facing the firing pin is open, and the firing pin is accommodated in the guide channel through the opening.

[0006] Optionally, the guide plate has a guide channel on one side and a positioning groove on the bottom surface of the other side of the guide plate, and the gun body has a protrusion that positions and cooperates with the positioning groove.

[0007] Optionally, the guide plate is provided with a connecting hole for fixing it to the gun body, and the position of the connecting hole avoids the location of the guide channel and the positioning groove.

[0008] Optionally, the piston and the firing pin are detachably connected, the axial end of the piston is provided with a limiting groove, and the firing pin is provided with a limiting protrusion that coaxially cooperates with the limiting groove; or the axial end of the piston is provided with a limiting protrusion, and the firing pin is provided with a limiting groove that coaxially cooperates with the limiting protrusion.

[0009] Optionally, the piston and the firing pin are connected by screws, and the piston and the firing pin are respectively provided with screw holes for the screws to pass through. The screw holes extend from one side of the piston through the limiting protrusion to the other side away from the piston.

[0010] Optionally, the inner diameter of the guide channel and the outer diameter of the firing pin rod are clearance-fitted.

[0011] Optionally, the guide plate is fixed to the gun mount of the gun body through at least one connecting hole.

[0012] Optionally, one side of the firing pin is movably engaged with the guide plate, and the other side of the firing pin is provided with a locking tooth for engaging with the driving device.

[0013] The beneficial effects of this utility model are: (1) The guide channel provides stable radial support to the firing pin, ensuring that the firing pin maintains a straight line motion throughout the entire reciprocating motion, eliminating the deviation of the nail trajectory caused by the firing pin offset, and significantly improving shooting accuracy and consistency. By limiting the radial offset of the firing pin, abnormal friction and collision between the firing pin and surrounding components are also effectively avoided, reducing the wear rate of the firing pin itself and its related moving parts, thereby extending the service life of the entire gun.

[0014] (2) When any part of the firing pin or piston is damaged or worn, it can be replaced individually without scrapping the entire firing pin and piston assembly. This significantly reduces maintenance costs and material waste, and makes the repair process simpler and faster. No professional tools or complicated procedures are required to replace the parts, which greatly shortens the downtime of the equipment. Users can choose to replace individual parts according to the actual wear condition, avoiding the situation where the entire transmission assembly needs to be replaced due to local damage, thus improving the economic efficiency of tool use. Attached Figure Description

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

[0016] Figure 2 This is a schematic diagram of the guide plate of the nail gun proposed in an embodiment of the present invention.

[0017] The markings in the attached figures are as follows: 1. Gun body; 11. Protrusion; 2. Piston; 21. Limiting groove; 22. Screw hole; 3. Firing pin; 31. Limiting protrusion; 32. Clamping tooth; 4. Guide plate; 41. Guide channel; 42. Opening; 43. Positioning groove; 44. Connecting hole; 5. Drive device. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 and 2 As shown, this embodiment discloses a nail gun, including a gun body 1, a piston 2, a firing pin 3, and a guide plate 4. The gun body 1 constitutes the main structural frame of the nail gun, and a gun frame is formed at its front end. The guide plate 4 is fixedly mounted on the gun frame. The guide plate 4 has a U-shaped or C-shaped guide channel 41. The side of the guide channel 41 facing the firing pin 3 has an opening 42, so that the shaft of the firing pin 3 can be directly placed into the guide channel 41 from the side through the opening 42 during installation, without having to be inserted from the end as in traditional closed guide holes. The arc-shaped inner wall of the guide channel 41 and the outer diameter of the firing pin 3 are precisely clearance-fitted, ensuring that the firing pin 3 can move freely back and forth within the guide channel 41, while effectively limiting its offset in any radial direction. The gun mount has an upward-protruding positioning protrusion 11, and the bottom surface of the guide plate 4 has a positioning groove 43. During installation, the positioning groove 43 tightly engages with the protrusion 11 on the gun mount, ensuring the positional accuracy of the guide plate 4 relative to the gun body 1, thereby guaranteeing the coaxiality of the guide channel 41 and the piston 2's axis of motion. When the nail gun is in operation, high-pressure gas drives the piston 2 forward at high speed, and the piston 2 drives the firing pin 3 forward along with it via a screw. During this process, the rod portion of the firing pin 3 always slides within the opening 42 of the guide channel 41 on the guide plate 4. This effectively constrains the radial oscillation of the firing pin 3 that may occur due to inertia or uneven force, ensuring that the firing pin 3 always impacts the nail in a straight line.

[0020] One side of the firing pin 3's shaft engages with the guide channel 41 of the guide plate 4 (opening 42), receiving its radial constraint. On the other side of the firing pin 3's shaft, a set of locking teeth 32 is provided. These locking teeth 32 are distributed along a section of the firing pin 3's shaft to form a rack structure. The drive device 5 is an electric drive system, including a motor and a drive wheel driven by the motor. The drive wheel meshes with the locking teeth 32 on the firing pin 3.

[0021] The guide plate 4 is fixedly mounted on the gun mount at the front end of the gun body 1 through at least one connecting hole 44 and fastening screws. The connecting hole 44 avoids the area where the guide channel 41 and the positioning groove 43 are located, thereby avoiding adverse effects on the strength and accuracy of these two key functional areas due to the opening.

[0022] Piston 2 is housed in a cylinder inside the gun body 1 and is driven by high-pressure gas to reciprocate. A limiting groove 21 is axially located at the front end of piston 2. A threaded hole 22, passing through the front end of piston 2 and leading to the bottom of the limiting groove 21, is located at the axial center of piston 2. The firing pin 3 impacts the nail. A limiting protrusion 31, adapted to the upper limiting groove 21 of piston 2, is located at the rear end of the firing pin 3. This protrusion 31 can be precisely inserted into the limiting groove 21 of piston 2. A threaded hole 22, coaxial with the threaded hole 22 on piston 2, is located at the axial center of the protrusion 31. A screw passes through the threaded hole 22 of piston 2 and screws into the threaded hole 22 of firing pin 3, securely and detachably connecting piston 2 and firing pin 3. Users can choose to replace individual components based on actual wear, avoiding the need to replace the entire transmission assembly due to localized damage. This effectively extends the overall service life of the core components and improves the economic efficiency of tool use. The front end of the firing pin 3 passes through the guide plate 4, and its side is provided with a locking tooth 32 that engages with the drive device 5.

[0023] 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 nail gun, characterized in that, The gun includes a gun body, a firing pin disposed within the gun body, a piston for driving the firing pin to reciprocate, and a guide plate disposed on the gun body. The guide plate has a guide channel through which the firing pin passes, and the side of the guide channel facing the firing pin is open, through which the firing pin is received in the guide channel.

2. The nail gun according to claim 1, characterized in that, The guide plate has a guide channel on one side and a positioning groove on the bottom surface of the other side. The gun body has a protrusion that positions and cooperates with the positioning groove.

3. The nail gun according to claim 1, characterized in that, The guide plate is provided with a connection hole for connecting to the gun body, and the position of the connection hole avoids the location of the guide channel and the positioning groove.

4. The nail gun according to claim 1, characterized in that, The piston and the firing pin are detachably connected. The piston has a limiting groove at its axial end and the firing pin has a limiting protrusion that is coaxially engaged with the limiting groove; or the piston has a limiting protrusion at its axial end and the firing pin has a limiting groove that is coaxially engaged with the limiting protrusion.

5. The nail gun according to claim 4, characterized in that, The piston and the firing pin are connected by screws. The piston and the firing pin are respectively provided with screw holes for the screws to pass through. The screw holes extend from one side of the piston through the limiting protrusion to the other side away from the piston.

6. The nail gun according to claim 1, characterized in that, The inner diameter of the guide channel and the outer diameter of the firing pin rod are in clearance fit.

7. The nail gun according to claim 1, characterized in that, The guide plate is fixed to the gun mount of the gun body through at least one connecting hole.

8. The nail gun according to claim 1, characterized in that, One side of the firing pin is movably engaged with the guide plate, and the other side of the firing pin is provided with a locking tooth for engaging with the driving device.

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