Nail gun

By adopting a threaded connection design between the cylinder and the inflation cap in the nail gun, the problem of needing to remove the back cover to inflate the cylinder assembly in the existing technology is solved, realizing a fast and convenient cylinder inflation operation.

CN223889941UActive Publication Date: 2026-02-10JIANGSU DONGCHENG TOOLS TECH CO LTD
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Patent Information

Application Number
CN202520421327.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-02-10
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

The existing nail gun cylinder assembly requires the removal of the back cover of the housing for inflation, which is complicated and inconvenient for rapid inflation.

Method used

The cylinder and the inflation cap are connected by a threaded structure. Users can directly rotate the inflation cap to separate them, achieving rapid inflation without the need for additional tools.

Benefits of technology

It enables rapid cylinder inflation and replenishment, simplifies the operation process, and improves ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model relates to the technical field of nail guns, and provides a nail gun which comprises a machine shell, and the machine shell comprises a main body part and a rear cover detachably connected to the main body part; the air cylinder assembly is arranged in the machine shell, the air cylinder assembly provides power for the nail gun to shoot nails, and the air cylinder assembly comprises an air cylinder contained in the main body part and an inflation cover connected to the end of the air cylinder; wherein the rear cover covers the end face of the air cylinder, the rear cover comprises a through hole penetrating through the rear cover, and the inflation cover penetrates through the through hole and is connected to the end of the air cylinder through a thread structure. According to the embodiment of the invention, the air cylinder can be quickly inflated and supplemented.
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Description

Technical Field

[0001] This disclosure relates to the field of nail gun technology, and particularly to a nail gun. Background Technology

[0002] Nail guns are mainly used in industries such as construction and interior decoration. Their working principle is as follows: when the nozzle is pressed down and the switch is pressed, the motor is started. The firing pin drive mechanism drives the firing pin from the initial locked ready position to drive the piston to compress air backward. After the firing pin disengages from the firing pin drive mechanism, it is suddenly released to strike the row of nails in the nail magazine that have been pushed into the nail holder by the nail pusher, causing them to be ejected from the nozzle.

[0003] A nail gun includes a cylinder assembly, in which the cylinder provides power for the nail gun to fire the nails. Over time, air leakage can occur in the cylinder, leading to a decrease in internal air pressure and a reduction in the nail-firing force.

[0004] However, in related technologies, the inflation cap of the cylinder assembly is fixedly mounted on the rear cover of the housing. Inflating the cylinder requires removing the rear cover, which necessitates using additional tools to remove the screws, making it complex and inconvenient for users to quickly inflate the cylinder. Therefore, there is an urgent need for a nail gun that can quickly inflate the cylinder. Utility Model Content

[0005] This disclosure provides a nail gun that can at least achieve rapid inflation of the cylinder.

[0006] According to some embodiments of this disclosure, a nail gun is provided, comprising: a housing, the housing including a main body and a rear cover detachably connected to the main body; and a cylinder assembly disposed within the housing, the cylinder assembly providing power for the nail gun to fire nails, the cylinder assembly including a cylinder housed in the main body and an inflation cap connected to the end of the cylinder; wherein the rear cover covers the end face of the cylinder, the rear cover including a through hole, and the inflation cap passing through the through hole and connected to the end of the cylinder via a threaded structure.

[0007] In some embodiments, the surface of the rear cover facing the inflatable cover is provided with a first mating portion, and the surface of the inflatable cover facing the rear cover is provided with a second mating portion that mates with the first mating portion, wherein the shape and size of the first mating portion are adapted to the shape and size of the second mating portion.

[0008] In some embodiments, the second mating portion includes a first contact surface and a second contact surface spaced apart, and a first connecting surface connecting the first contact surface and the second contact surface; the first mating portion includes a third contact surface and a fourth contact surface spaced apart, and a second connecting surface connecting the third contact surface and the fourth contact surface.

[0009] In some embodiments, the first contact surface abuts against the third contact surface, the second contact surface abuts against the fourth contact surface, and the first connecting surface abuts against the second connecting surface.

[0010] In some embodiments, four of the first mating parts and four of the second mating parts are provided, and the first mating parts and the second mating parts are arranged correspondingly in the circumferential direction.

[0011] In some embodiments, the inflatable cover has several operating parts on its surface opposite to the rear cover.

[0012] In some embodiments, the inflatable cover includes partitions that space the operating portions 4 apart, the partitions causing the operating portions 4 to be evenly distributed in the circumferential direction.

[0013] In some embodiments, the inflatable cover includes a cover body and a cylinder. The outer surface of the cylinder is provided with a first thread. The end of the cylinder facing the inflatable cover is provided with a groove. The surface of the groove is provided with a second thread. The inflatable cover and the cylinder are connected by the first thread and the second thread.

[0014] In some embodiments, a valve core is disposed in the groove, the cylinder is a hollow cylinder, and the valve core is housed in the hollow portion of the cylinder.

[0015] In some embodiments, the back cover and the inflatable cover are integrally injection molded.

[0016] The technical solution provided in this disclosure has at least the following advantages:

[0017] In the technical solution of the nail gun provided in this embodiment, the nail gun includes a housing, which includes a main body and a rear cover detachably connected to the main body; a cylinder assembly, which is disposed inside the housing and provides power for the nail gun to fire nails, the cylinder assembly including a cylinder housed in the main body and an inflation cap connected to the end of the cylinder; wherein, the rear cover covers the end face of the cylinder, the rear cover includes a through hole through the rear cover, and the inflation cap passes through the through hole and is connected to the end of the cylinder through a threaded structure.

[0018] In the nail gun provided in this embodiment, the cylinder and the inflation cap are connected by a threaded structure. When the user needs to inflate the cylinder, the inflation cap can be directly rotated to separate the inflation cap from the cylinder without the need for additional tools, thus allowing for quick inflation of the cylinder. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with corresponding pictures in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Unless otherwise stated, the pictures in the accompanying drawings do not constitute a limitation on scale. In order to more clearly illustrate the technical solutions in the embodiments of this disclosure or the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a nail gun provided in an embodiment of the present disclosure;

[0021] Figure 2 This is a schematic diagram of another structure of the nail gun provided in an embodiment of this disclosure;

[0022] Figure 3 An exploded view of a nail gun provided in an embodiment of this disclosure;

[0023] Figure 4 Another exploded view of the nail gun provided in this embodiment of the disclosure;

[0024] Figure 5 A schematic diagram of the structure of an inflatable cover provided in an embodiment of this disclosure;

[0025] Figure 6 This is another structural schematic diagram of the inflatable cover provided in an embodiment of this disclosure. Detailed Implementation

[0026] As can be seen from the background technology, there is an urgent need for a nail gun that can quickly inflate and replenish the cylinder.

[0027] This disclosure provides a nail gun in which the cylinder and the inflation cap are connected by a threaded structure. When the user needs to inflate the cylinder, the inflation cap can be directly rotated to separate the inflation cap from the cylinder without the need for additional tools, thus enabling the cylinder to be quickly inflated.

[0028] In the description of the embodiments of this disclosure, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary or secondary relationship of the indicated technical features. In the description of the embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments of this disclosure, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0031] In the description of the embodiments of this disclosure, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0032] In the description of embodiments of this disclosure, when a component “includes” another component, other components are not excluded unless otherwise stated, and other components may be further included. Furthermore, when a component such as a layer, film, region, or plate is referred to as being “on / located” on another component, it may be “directly on” the other component (i.e., located on the surface of the other component with no other components between them), or another component may be present therein.

[0033] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this disclosure to facilitate a better understanding of the disclosure. However, the technical solutions claimed in this disclosure can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0034] Figure 1 This is a schematic diagram of a nail gun provided in an embodiment of the present disclosure. Figure 2This is another structural schematic diagram of the nail gun provided in an embodiment of this disclosure. Figure 3 An exploded view of a nail gun provided in an embodiment of this disclosure. Figure 4 Another exploded view of the nail gun provided in this embodiment of the disclosure. Figure 5 This is a schematic diagram of a structure of an inflatable cover provided in an embodiment of the present disclosure. Figure 6 This is another structural schematic diagram of the inflatable cover provided in an embodiment of this disclosure.

[0035] refer to Figures 1 to 6 The nail gun includes a housing 1, which includes a main body 12 and a rear cover 13 detachably connected to the main body 12; a cylinder assembly 2, which is disposed inside the housing 1 and provides power for the nail gun to fire nails. The cylinder assembly 2 includes a cylinder 21 housed in the main body 12 and an inflation cap 22 connected to the end of the cylinder 21; wherein, the rear cover 13 covers the end face of the cylinder 21, and the rear cover 13 includes a through hole 131 penetrating the rear cover 13. The inflation cap 22 passes through the through hole 131 and is connected to the end of the cylinder 21 through a threaded structure.

[0036] The housing 1 is used to protect the internal structure of the nail gun.

[0037] The housing 1 includes a main body 12 and a rear cover 13. The rear cover 13 includes a through hole 131 for housing an inflation cap 22. Specifically, the through hole 131 houses the cover body 221 of the inflation cap 22, meaning the end face of the inflation cap 22 facing away from the cylinder 21 is exposed. This configuration allows the user to rotate the inflation cap 22 without removing the rear cover 13 of the housing 1, thus separating the inflation cap 22 from the cylinder 21 and completing the inflation of the cylinder 21.

[0038] In some embodiments, the surface of the rear cover 13 facing the inflation cover 22 is provided with a first mating portion 11, and the surface of the inflation cover 22 facing the rear cover 13 is provided with a second mating portion 23 that mates with the first mating portion 11. The shape and size of the first mating portion 11 are adapted to the shape and size of the second mating portion 23. With this configuration, when the cylinder 21 is connected to the inflation cover 22, the first mating portion 11 and the second mating portion 23 engage, requiring the inflation cover 22 to overcome a certain resistance to rotate relative to the cylinder 21. In other words, the configuration of the first mating portion 11 and the second mating portion 23 can prevent the cylinder 21 and the inflation cover 22 from rotating relative to each other at will, thereby preventing the cylinder 21 from becoming loose from the inflation cover 22.

[0039] In some examples, one of the first mating part 11 and the second mating part 23 is a recess, and the other of the first mating part 11 and the second mating part 23 is a protrusion.

[0040] In some embodiments, the second mating part 23 includes a first contact surface 231 and a second contact surface 232 spaced apart, and a first connecting surface 233 connecting the first contact surface 231 and the second contact surface 232; the first mating part 11 includes a third contact surface 111 and a fourth contact surface 112 spaced apart, and a second connecting surface 113 connecting the third contact surface 111 and the fourth contact surface 112.

[0041] In some embodiments, the first contact surface 231 abuts against the third contact surface 111, the second contact surface 232 abuts against the fourth contact surface 112, and the first connecting surface 233 abuts against the second connecting surface 113. When the inflation cap 22 is connected to the cylinder 21, the second mating part 23 engages with the first mating part 11, the first contact surface 231 of the second mating part 23 abuts against the third contact surface 111 of the first mating part 11, the second contact surface 232 of the second mating part 23 abuts against the fourth contact surface 112 of the first mating part 11, and the first connecting surface 233 abuts against the second connecting surface 113. When it is necessary to separate the inflation cap 22 from the cylinder 21, the resistance between the first contact surface 231 and the third contact surface 111, and / or the resistance between the second contact surface 232 and the fourth contact surface 112, must be overcome before the inflation cap 22 can be rotated. This design prevents the inflation cover 22 from rotating relative to the cylinder 21 under external factors, thus preventing the cylinder 21 from becoming detached from the inflation cover 22.

[0042] The first contact surface 231 and the third contact surface 111 can be a plane, an inclined plane, or an arc surface, etc.; the second contact surface 232 and the fourth contact surface 112 can be a plane, an inclined plane, or an arc surface, etc.; the first connecting surface 233 and the second connecting surface 113 can be a plane, an inclined plane, or an arc surface, etc.

[0043] In some embodiments, four first mating parts 11 and four second mating parts 23 are provided, and the first mating parts 11 and the second mating parts 23 are correspondingly arranged in the circumferential direction. This arrangement can increase the resistance to relative rotation between the inflation cap 22 and the cylinder 21, thereby preventing the cylinder 21 from becoming loose from the inflation cap 22. Furthermore, the resistance preventing the inflation cap 22 from rotating freely relative to the cylinder 21 is evenly distributed, which can improve the reliability of preventing the cylinder 21 from becoming loose from the inflation cap 22.

[0044] In some embodiments, the surface of the inflation cap 22 facing away from the rear cover 13 is provided with several operating parts 24. The operating parts 24 provide a force application position for the user to rotate the inflation cap 22, making it convenient for the user to rotate the inflation cap 22; multiple operating parts 24 allow the user to apply external force through multiple operating parts 24 at the same time to rotate the inflation cap 22, which can improve the efficiency of rotating the inflation cap 22, thereby quickly separating the inflation cap 22 from the cylinder 21 and realizing rapid inflation of the cylinder 21.

[0045] Understandable Figure 3 and Figure 4 Taking an inflatable cover containing 4 operating parts as an example, in reality, the number of operating parts can also be 2, 3, 5, or other values.

[0046] In some embodiments, the inflatable cover 22 includes a partition 25 that separates the operating portions 24, the partition 25 causing the operating portions 24 to be evenly distributed in the circumferential direction.

[0047] In some embodiments, the inflation cover 22 includes a cover body 221 and a cylinder 222. The outer surface of the cylinder 222 is provided with a first thread. The end of the cylinder 21 facing the inflation cover 22 is provided with a groove 26. The surface of the groove 26 is provided with a second thread. The inflation cover 22 and the cylinder 21 are connected by the first thread and the second thread. That is, the thread structure includes a first thread and a second thread.

[0048] In some embodiments, a valve core 27 is provided in the groove, and the cylinder 222 is a hollow cylinder, with the valve core 27 housed in the hollow portion of the cylinder 222.

[0049] In some embodiments, the rear cover 13 and the inflatable cover 22 are integrally injection molded. That is, the rear cover 13 and the inflatable cover 22 are both integrally injection molded. This can improve the production speed of the rear cover 13 and the inflatable cover 22, as well as the structural strength of the rear cover and the inflatable cover 22.

[0050] In the aforementioned nail gun, the cylinder 21 and the inflation cap 22 are connected by a threaded structure. When the user needs to inflate the cylinder 21, the inflation cap 22 can be directly rotated to separate it from the cylinder 21 without the need for additional tools, thus allowing for rapid inflation of the cylinder 21. Furthermore, a first mating part 11 is provided on the housing 1, and a second mating part 23 that mates with the first mating part 11 is provided on the surface of the inflation cap 22. When the cylinder 21 and the inflation cap 22 are connected, the second mating part 23 engages with the first mating part 11. The first mating part 11 on the housing 1 provides resistance to the rotation of the second mating part 23 on the inflation cap 22. In other words, the arrangement of the second mating part 23 and the first mating part 11 prevents the cylinder 21 and the inflation cap 22 from rotating relative to each other at will, thereby preventing the cylinder 21 from becoming detached from the inflation cap 22.

[0051] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of this disclosure. Any person skilled in the art can make various alterations and modifications without departing from the spirit and scope of this disclosure; therefore, the scope of protection of this disclosure should be determined by the scope defined in the claims.

Claims

1. A nail gun for driving nails, characterized in that, The nail gun includes: A housing, the housing including a main body and a rear cover detachably connected to the main body; A cylinder assembly is disposed within the housing and provides power for the nail gun to fire nails. The cylinder assembly includes a cylinder housed in the main body and an inflation cap connected to the end of the cylinder. The rear cover covers the end face of the cylinder and includes a through hole through the rear cover. The inflation cap passes through the through hole and is connected to the end of the cylinder via a threaded structure.

2. The nail gun according to claim 1, characterized in that, The rear cover has a first mating part on its surface facing the inflatable cover, and the inflatable cover has a second mating part on its surface facing the rear cover that mates with the first mating part. The shape and size of the first mating part are adapted to the shape and size of the second mating part.

3. The nail gun according to claim 2, characterized in that, The second mating part includes a first contact surface and a second contact surface spaced apart, and a first connecting surface connecting the first contact surface and the second contact surface; the first mating part includes a third contact surface and a fourth contact surface spaced apart, and a second connecting surface connecting the third contact surface and the fourth contact surface.

4. The nail gun according to claim 3, characterized in that, The first contact surface abuts against the third contact surface, the second contact surface abuts against the fourth contact surface, and the first connecting surface abuts against the second connecting surface.

5. The nail gun according to claim 4, characterized in that, There are four first mating parts and four second mating parts, and the first mating parts and the second mating parts are arranged correspondingly in the circumferential direction.

6. The nail gun according to claim 1, characterized in that, Several operating parts are provided on the surface of the inflatable cover opposite to the rear cover.

7. The nail gun according to claim 6, characterized in that, The inflatable cover includes partitions that separate the operating parts, the partitions causing the operating parts to be evenly distributed in the circumferential direction.

8. The nail gun according to claim 1, characterized in that, The inflatable cover includes a cover body and a cylinder. The outer surface of the cylinder is provided with a first thread. The end of the cylinder facing the inflatable cover is provided with a groove. The surface of the groove is provided with a second thread. The inflatable cover and the cylinder are connected by the first thread and the second thread.

9. The nail gun according to claim 8, characterized in that, A valve core is provided in the groove, and the cylinder is a hollow cylinder, with the valve core housed in the hollow part of the cylinder.

10. The nail gun according to claim 9, characterized in that, The rear cover and the inflatable cover are respectively integrally injection molded.