Nailing tool

Abstract

The utility model provides a nailing tool, relates to the technical field of electric tools, and mainly solves the problem of how to improve the stability in the nailing process. A nailing tool comprises an air cylinder and a cylinder body mounting seat, a firing pin is arranged in the air cylinder, one end of the firing pin can penetrate through the cylinder body mounting seat to knock out a nail, a locking assembly is arranged on the cylinder body mounting seat, and the locking assembly can be connected with one side of the firing pin in a clamped mode. The limiting part is located on the other side of the firing pin and corresponds to the locking assembly in the left-right direction, a wear-resisting part is arranged on the limiting part, and the firing pin can be clamped in the middle of the cylinder body installation base through the wear-resisting part and the locking assembly, so that the central axis of the firing pin coincides with the central axis of the air cylinder. The limiting part and the locking part are arranged on the two sides of the firing pin correspondingly, and the limiting part and the locking part are symmetrically arranged, so that the situation that nailing cannot be achieved due to the fact that the firing pin inclines in the pressure accumulation process is avoided, and the stability in the nailing process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nailing tools, in particular to a nailing gun, and more particularly to a nailing tool. Background Art

[0002] The following discussion of the background of the invention is intended to facilitate understanding of the invention. However, it should be appreciated that the discussion does not constitute an acknowledgement or admission that any aspect of the discussion was part of the common general knowledge as of the filing date of the present application.

[0003] As a fastening tool widely used in furniture production and interior decoration, nailing tools drive nails into the objects to be fastened by hitting the nails in the nail mouth with a high-speed moving striker to achieve a fixed connection between the two objects. Among them, as for the commonly used handheld nailing tools, they can be divided into pneumatic nail guns and electric nail guns according to the driving form. Taking the electric nail gun as an example, it includes a driving motor, a main cylinder that generates high pressure, and a sub-cylinder for the reciprocating movement of the striker. The driving motor rotates to drive the piston in the main cylinder to make reciprocating linear motion, thereby compressing the air inside the nail gun until a certain air pressure threshold is reached. The locking assembly disengages from the striker, and the thrust generated by the internal and external pressure difference pushes the piston in the sub-cylinder to drive the striker forward. The striker passes through the hole on the cylinder mounting seat and the nail mouth in turn, and hits the nail in the nail mouth to drive the nail out.

[0004] For example, in a nailing machine in the prior art, when the driving motor drives piston two to compress air, the hinged rod rotates one circle driven by the DC motor, and triggers the shift block during the rotation. The shift block drives connecting plate one to rotate through connecting plate two, and then drives pivot one to rotate, so that the clamping part connected to pivot one disengages from the limiting part on the firing pin, and under the push of high-pressure gas, the firing pin quickly and forcefully hits the nail with piston one to drive the nail out. However, during use, affected by the clamping part, the firing pin will tilt to the other side, causing the end of the firing pin to be misaligned with the nail output groove in the nail output mouth, resulting in the firing pin being unable to pass through the nail gun to drive the nail out. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the existing technology and to propose a nailing tool. The technical problem to be solved by the utility model is: how to improve the stability during the nailing process.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a nailing tool, including a cylinder and a cylinder mounting seat, a firing pin is arranged in the cylinder, one end of the firing pin can pass through the cylinder mounting seat to drive out the nail, a locking assembly is provided on the cylinder mounting seat, and the locking assembly can be connected with one side of the firing pin by clamping, and is characterized in that a limiting part is provided on the cylinder mounting seat, the limiting part is located on the other side of the firing pin, and is arranged corresponding to the left and right of the locking assembly, the limiting part is provided with a wear-resistant part, and the wear-resistant part and the locking assembly can clamp the firing pin in the middle of the cylinder mounting seat so that the central axis of the firing pin coincides with the central axis of the cylinder.

[0007] The basic principle of the present application is the same as that of the existing nail guns, both of which use the internal and external pressure difference to push the piston in the cylinder and the firing pin to drive the nail in the nail ejection mouth. In addition, based on the existing clamping connection between the locking assembly and one side of the firing pin, the present application provides a limiting portion on the other side of the firing pin, and the limiting portion and the locking assembly are provided correspondingly on the left and right to limit the circumferential freedom of the firing pin, ensuring that the central axis of the firing pin and the central axis of the cylinder can coincide, avoiding the firing pin from tilting and causing the nail gun to be unable to be used normally. In addition, a wear-resistant part in contact with the firing pin is provided on the limiting portion to reduce the impact of wear of the limiting portion during the rapid reciprocating movement of the firing pin, thereby extending the service life of the nail gun, and in the non-working state, the locking assembly and the wear-resistant part can clamp the firing pin to avoid the firing pin being affected by the lateral force of the locking assembly and deviating from the predetermined axis, thereby improving the stability of nailing.

[0008] In the above-mentioned nailing tool, the locking assembly includes a locking portion, and the locking portion can be snap-connected with one side of the striker. When the locking portion is snap-connected with one side of the striker, the wear-resistant part abuts against the other side of the striker.

[0009] In the above-mentioned nailing tool, the wear-resistant part includes a wear-resistant plate and a fixing plate, the wear-resistant plate and the fixing plate are connected via a connecting plate, and the wear-resistant plate abuts against the striker.

[0010] In the above-mentioned nailing tool, the limit part and the fixing plate are detachably connected by bolts, and an embedding groove is provided at the end of the limit part, and the embedding groove is used to accommodate the connecting plate. By adopting a detachable connection, the wear-resistant part can be replaced after long-term use, and it can also adapt to strikers of different widths to ensure that the striker will not tilt, and the contact area between the limit part and the wear-resistant part is increased by the embedding groove, thereby improving the fixing strength of the wear-resistant part and preventing the wear-resistant part from being separated from the limit part during nailing.

[0011] In the above-mentioned nailing tool, the wear-resistant plate, the fixing plate and the connecting plate are formed by bending the sheet material in one piece, and the sheet material is formed by stamping the iron plate. The one-piece stamping and bending molding improves the strength of the mechanism while

[0012] In the above-mentioned nailing tool, one side of the cylinder mounting seat has a mounting portion, one side of the mounting portion cooperates with the cylinder, and the other side is integrally formed with a protrusion, and the protrusion is a limit portion. By integrally forming the limit portion with the mounting portion, the structural strength of the limit portion is increased, and the stability of the nailing gun is further improved.

[0013] In the above-mentioned nailing tool, a nail ejection nozzle is connected to the other side of the cylinder mounting seat, a through hole is provided on the mounting portion, and the firing pin passes through the through hole and the nail ejection nozzle in sequence to drive the nail out.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The present application symmetrically arranges a limit part and a locking assembly on both sides of the firing pin, and cooperates with the wear-resistant parts on the limit part and the locking part of the locking assembly to avoid the interference between the end of the firing pin and the side wall of the nail ejection mouth caused by the deviation of the firing pin during the pressure accumulation process, thereby improving the stability during the nailing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the utility model;

[0017] Figure 2 It is an overall three-dimensional schematic diagram of the back of the utility model;

[0018] Figure 3 It is an overall exploded schematic diagram of the utility model;

[0019] Figure 4 It is a top view cross-sectional schematic diagram of the utility model;

[0020] Figure 5 yes Figure 3 A partial enlarged schematic diagram of

[0021] Figure 6 It is a partially enlarged schematic diagram of another locking component of the utility model.

[0022] Figure 7 This is a disassembly diagram of the nail gun of the utility model;

[0023] In the figure, 1, nailing body; 1a, main cylinder; 1b, auxiliary cylinder; 1b1, firing pin; 1b2, auxiliary piston; 1c, cylinder mounting seat; 1c 1, limiting part; 1c 1a, embedding groove; 1c2, mounting part; 1c3, perforation; 2, nailing structure; 2a, nailing mouth; 2b, nail box; 3, shell; 3a, control handle; 3a1, control switch; 3b, fixing seat; 4, control main board; 5, locking assembly; 5a, locking part; 6, wear-resistant parts; 6a, wear-resistant plate; 6b, fixing plate; 6c, connecting plate; 7, driving motor; 7a, crank; 7b, connecting rod; 7c, magnetic element; 8, Hall sensor cover; 8a, Hall element. DETAILED DESCRIPTION

[0024] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0025] like Figures 1 to 3 As shown, the present application includes a nailing body 1, a nailing structure 2 located at the front end and a shell 3 located on both sides of the nailing body 1, the nailing structure 2 includes a nailing mouth 2a and a nail box 2b, wherein the nailing body 1 includes a main cylinder 1a, a sub-cylinder 1b and a cylinder mounting seat 1c, the main cylinder 1a and the sub-cylinder 1b are connected through the cylinder mounting seat 1c, the two shells 3 are covered outside the main cylinder 1a, the sub-cylinder 1b and the cylinder mounting seat 1c, and cooperate to form a control handle 3a, the cylinder mounting seat 1c is located between the control handle 3a and the nail box 2b, a control switch 3a1 is provided on the top of the control handle 3a, the control switch 3a1 is used to control the nail gun to drive out nails, a control main board 4 is provided between the cylinder mounting seat 1c and the nail box 2b, and a driving motor 7 is provided at the bottom of the cylinder mounting seat 1c.

[0026] And if Figure 3 As shown, one side of the cylinder mounting seat 1c is connected to the auxiliary cylinder 1b through the mounting portion 1c2, and the other side is connected to the nail ejection mouth 2a, wherein the cylinder mounting seat 1c is still provided with a locking assembly 5 and a limiting portion 1c1, a firing pin 1b1 is inserted into the auxiliary cylinder 1b, one end of the firing pin 1b1 passes through the through hole 1c3 on the mounting portion 1c2, and is snap-connected with the locking portion 5a in the locking assembly 5, and the limiting portion 1c1 is integrally formed with the mounting portion 1c2, and the limiting portion 1c1 is arranged corresponding to the locking portion 5a on the left and right, and a wear-resistant part 6 is provided on the limiting portion 1c1, and the wear-resistant part 6 is detachably connected to the limiting portion 1c1 by bolts, thereby facilitating the replacement of the wear-resistant part 6.

[0027] like Figure 4 as well as Figure 5As shown, a secondary piston 1b2 is provided in the secondary cylinder 1b, and the secondary piston 1b2 is fixedly connected to one end of the striker 1b1, and the other end of the striker 1b1 passes through the through hole 1c3 on the cylinder mounting seat 1c, wherein a locking assembly 5 composed of an intermediate piece and a locking piece is provided on the left side of the cylinder mounting seat 1c, wherein the intermediate piece is a locking portion 5a, and a limiting portion 1c1 formed by an integrally formed protrusion is provided on the mounting portion 1c2 on the right side, and a wear-resistant part 6 is provided between the limiting portion 1c1 and the side wall of the striker 1b1, and the wear-resistant part 6 includes a wear-resistant plate 6a that can rub against the side wall of the striker 1b1, a fixed plate 6b detachably connected to the limiting portion 1c1, and a connecting plate 6c, and the wear-resistant plate 6a and the fixed plate 6b are connected via the connecting plate 6c, and as for the wear-resistant part 6, it is formed into a U-shaped part by integrally stamping and bending an iron sheet, wherein the end face of the limiting portion 1c1 is also provided with an embedding groove 1c1 for cooperating with the connecting plate 6c. 1a.

[0028] In addition, a limit groove is provided on the striker 1b1, which is used to be connected with the middle piece in the locked state. The limit part 1c1 is arranged corresponding to the middle piece on the left and right. Through the cooperation of the wear-resistant part 6 on the limit part 1c1 and the middle piece, the center axis of the striker 1b1 coincides with the center axis of the cylinder to avoid deviation. The specific unlocking method is consistent with the solution of the utility model patent (2019201788706) on October 25, 2019, and will not be elaborated here.

[0029] like Figure 6 As shown, as an alternative to the locking assembly 5, in addition to the above-mentioned method of cooperating with the locking member through the intermediate member, a method of direct clamping of the clamping member can also be adopted. The specific unlocking method and structure are consistent with the solution of the utility model patent (201520454838.8) published on November 4, 2015, and will not be elaborated on here.

[0030] like Figure 7 As shown, a fixing seat 3b is provided on one of the shells of the nail gun, and the fixing seat 3b is used to install a Hall sensor cover 8 with a Hall element 8a. A crank 7a is connected to the output end of the driving motor 7, one end of the crank 7a is connected to the output shaft, and the other end is connected to a connecting rod 7b. The piston in the main cylinder is hingedly connected to the crank 7a through the connecting rod 7b, wherein a magnetic element 7c is provided on the end surface of one end where the crank 7a is hingedly connected to the connecting rod 7b. The driving motor 7 drives the magnetic element 7c to make a circular motion along the output shaft through the crank 7a, and cooperates with the Hall element 8a in the Hall sensor cover 8 to output a signal to the control main board, and the Hall sensor cover 8 is fixedly connected to the fixing seat 3b by bolts.

[0031] To sum up, in the nail gun of the present application, after the operator presses the control switch 3a1 on the control handle 3a, the control main board 4 controls the drive motor 7 to rotate, driving the main piston in the main cylinder 1a to move back and forth, thereby compressing the internal gas to form high pressure, and after the high pressure is formed, the locking portion 5a in the locking assembly 5 is separated from the firing pin 1b1, and one end of the firing pin 1b1 passes through the through hole 1c3 on the cylinder mounting seat 1c, enters the nail outlet mouth 2a, hits the nail located in the nail outlet mouth 2a, and after the nail is embedded in the object to be nailed, after the firing pin 1b1 is reset, the spring in the nail magazine 2b pushes the nail to move upward to complete the nailing.

[0032] On the basis of the above-mentioned nail gun, the present application, when locking, needs to be subjected to the lateral force from the locking portion 5a in the locking assembly 5 and the firing pin 1b1 during the clamping process. If the limiting portion 1c1 is set at a position away from the clamping position between the locking portion 5a and the firing pin 1b1, the middle part of the firing pin 1b1 will bend under long-term use, and the nail cannot be smoothly driven out of the nail outlet 2a. Therefore, in order to solve the above-mentioned problem, the present application sets a limiting portion 1c1 with a wear-resistant part 6 on the other side of the firing pin 1b1, and makes it symmetrical with the locking portion 5a in the locking assembly 5, so that when the main cylinder 1a of the nail gun compresses the gas, the firing pin 1b1 is clamped in the cylinder seat by the locking assembly 5 and the wear-resistant part 6 on the limiting portion, so as to avoid the looseness caused by the fitting error between the parts, which may cause the firing pin 1b1 to tilt and disengage from the clamping part, thereby improving the stability of nailing, and the wear-resistant part 6 is formed by integrally bending the iron sheet, and a groove 1c1 is set at the front end of the limiting portion 1c1 1a increases the contact area with the wear-resistant part 6, thereby improving the overall structural strength and installation stability of the wear-resistant part 6. While preventing the wear-resistant part 6 from being affected by the firing pin 1b1 and being separated from the limiting part 1c1, the limiting part 1c1 is detachably connected by bolts, which facilitates the replacement of the wear-resistant part 6 and improves the service life of the nail gun.

[0033] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0034] Although this article uses more terms such as 1, nailing body; 1a, main cylinder; 1b, auxiliary cylinder; 1b 1, firing pin; 1b2, auxiliary piston; 1c, cylinder mounting seat; 1c 1, limiting part; 1c 1a, embedding groove; 1c2, mounting part; 1c3, perforation; 2, nailing structure; 2a, nailing mouth; 2b, nail magazine; 3, shell; 3a, control handle; 3a1, control switch; 3b, fixing seat; 4, control main board; 5, locking assembly; 5a, locking part; 6, wear-resistant parts; 6a, wear-resistant plate; 6b, fixing plate; 6c, connecting plate; 7, driving motor; 7a, crank; 7b, connecting rod; 7c, magnetic element; 8, Hall sensor cover; 8a, Hall element, etc., it is for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A nailing tool, comprising a sub-cylinder (1b) and a cylinder mounting seat (1c), wherein a striker (1b1) is arranged in the sub-cylinder (1b), one end of which can pass through the cylinder mounting seat (1c) to drive a nail out, and a locking assembly (5) is arranged on the cylinder mounting seat (1c), and the locking assembly (5) can be connected with one side of the striker (1b1) by clamping, characterized in that: The cylinder mounting seat (1c) is provided with a limiting portion (1c1), the limiting portion (1c1) is located on the other side of the striker (1b1) and is arranged corresponding to the locking assembly (5) on the left and right, and the limiting portion (1c1) is provided with a wear-resistant part (6), and the wear-resistant part (6) and the locking assembly (5) can clamp the striker (1b1) in the middle of the cylinder mounting seat (1c), so that the central axis of the striker (1b1) coincides with the central axis of the auxiliary cylinder (1b).

2. The nailing tool according to claim 1, characterized in that: The locking assembly (5) comprises a locking portion (5a), and the locking portion (5a) can be snap-connected with one side of the striker (1b1). When the locking portion (5a) is snap-connected with one side of the striker (1b1), the wear-resistant part (6) abuts against the other side of the striker (1b1).

3. The nailing tool according to claim 2, characterized in that: The wear-resistant part (6) comprises a wear-resistant plate (6a) and a connecting plate (6b); the wear-resistant plate (6a) and the connecting plate (6b) are connected via a connecting plate (6c); and the wear-resistant plate (6a) abuts against the striker (1b1).

4. The nailing tool according to claim 3, characterized in that: The limiting portion (1c1) is detachably connected to the fixing plate (6b) via bolts, and an embedding groove (1c1a) is provided at the end of the limiting portion (1c1), and the embedding groove (1c1a) is used to accommodate the connecting plate (6c).

5. The nailing tool according to claim 3, characterized in that: The wear-resistant plate (6a), the fixing plate (6b) and the connecting plate (6c) are formed by integrally bending iron sheets.

6. The nailing tool according to any one of claims 1 to 5, characterized in that: One side of the cylinder mounting seat (1c) has a mounting portion (1c2), one side of the mounting portion (1c2) cooperates with the auxiliary cylinder (1b), and the other side has a protrusion integrally formed thereon, the protrusion being the limiting portion (1c1).

7. The nailing tool according to claim 6, characterized in that: The mounting portion (1c2) is provided with a through hole (1c3), the other side of the cylinder mounting seat (1c) is connected with a nail ejection mouth (2a), and the striker (1b1) passes through the through hole (1c3) and the nail ejection mouth (2a) in sequence to drive out the nail.

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