Nail gun
By designing a detachable rear cover and cylinder connection structure in the nail gun, and utilizing the cooperation of protrusions and slots, the firing pin can be quickly replaced, solving the problem of low firing pin replacement efficiency in existing nail guns and improving replacement efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-03-10
AI Technical Summary
The current nail gun has a low efficiency in changing the firing pin, requiring multiple rotations of the back cover to complete the task.
Design a nail gun with a protrusion on the back cover. The protrusion enters the cylinder cavity through a slot, rotates at a certain angle, and moves along the cylinder axis to separate the cylinder and the back cover, simplifying the process of replacing the firing pin.
It improves the efficiency of replacing the firing pin, saves time in separating the cylinder and the rear cover, and increases replacement efficiency.
Smart Images
Figure CN223981777U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The embodiment of the present disclosure relates to the technical field of nail guns, in particular to a nail gun. BACKGROUND
[0002] The nail gun is mainly used in the construction, interior decoration and other industries, and its working principle is: when the gun nozzle is pressed down and the switch is pressed, the motor is started, the striker driving mechanism drives the striker to drive the piston to compress the air backward from the initial locking position, and after the striker is disengaged from the striker driving mechanism, it is suddenly released to hit the row of nails in the nail magazine pushed by the nail pusher into the nail seat, so that the nails are shot out of the gun nozzle.
[0003] The nail gun includes a striker and a cylinder assembly, the striker is connected with the cylinder assembly, and the cylinder in the cylinder assembly provides power for the striker to shoot nails; as the striker is a consumable part in the nail gun, it needs to be replaced by opening the tool shell to replace the striker in the cylinder after a period of use; the cylinder and the rear cover in the cylinder assembly are screwed in the related art, so that the user needs to rotate the rear cover for several turns to replace the striker, resulting in low efficiency of replacing the striker of the nail gun. CONTENT OF THE UTILITY MODEL
[0004] The embodiment of the present disclosure provides a nail gun, which can at least improve the efficiency of replacing the striker.
[0005] According to some embodiments of the present disclosure, the embodiment of the present disclosure provides a nail gun, which comprises: a shell; a striker, which is arranged in the shell and is used to shoot nails; a cylinder assembly, which is connected with the striker and arranged in the shell, and is used to provide power for the striker to shoot nails, and comprises a cylinder and a rear cover; the cylinder is provided with an inner cavity, a first opening and a second opening connected with both ends of the inner cavity, and the striker moves in the inner cavity through the first opening; a surface of the inner cavity close to the second opening is provided with a stop portion and a notch; the rear cover is detachably mounted to the cylinder, and is provided with a protrusion matched with the notch; the protrusion enters the inner cavity through the notch and abuts against an end face of the stop portion to close the second opening.
[0006] In some embodiments, the stop portion extends along the circumferential direction of the cylinder, and the notch is arranged alternately with the stop portion; the inner diameter of the stop portion is smaller than the inner diameter of the notch.
[0007] In some embodiments, the protrusion and the notch are respectively provided with four, and the four protrusions are uniformly and circumferentially distributed on the rear cover, and the four notches are uniformly and circumferentially distributed on the cylinder.
[0008] In some embodiments, the shape and size of the protrusion are matched with the shape and size of the notch.
[0009] In some embodiments, the rear cover includes a cover body and a hollow cylinder protruding from the cover body, the protrusion being disposed on the outer periphery of the hollow cylinder, and the end face of the cover body abutting against the end face of the cylinder.
[0010] In some embodiments, the nail gun further includes a sealing ring, which is fitted around the outer periphery of the hollow cylinder and abuts against the inner circumferential surface of the cylinder.
[0011] In some embodiments, the rear cover has a protruding structure protruding from the surface of the rear cover on the surface opposite to the cylinder.
[0012] In some embodiments, the four protrusions are evenly and circumferentially distributed on the back cover.
[0013] In some embodiments, the housing includes a main body and a rear cover detachably connected to the main body, the rear cover being located between the cylinder and the rear cover.
[0014] In some embodiments, the rear cover of the housing is provided with a threaded hole penetrating the rear cover of the housing, and four threaded holes are evenly and circumferentially distributed on the rear cover of the housing; the nail gun also includes a screw, the screw is placed in the threaded hole, and the main body is detachably connected to the rear cover of the housing by the screw.
[0015] The technical solutions provided in this disclosure have at least the following advantages:
[0016] The technical solution of the nail gun provided in this embodiment includes: a housing; a firing pin disposed inside the housing, the firing pin firing nails; a cylinder assembly connected to the firing pin and disposed inside the housing, the cylinder assembly providing power for the firing pin to fire nails, the cylinder assembly including a cylinder and a rear cover; the cylinder is provided with an inner cavity and a first opening and a second opening connecting the inner cavity, a stop and a groove are provided on the surface of the cylinder facing the inner cavity, the rear cover is detachably installed to the cylinder, the rear cover is provided with a protrusion, the protrusion enters the inner cavity through the groove and abuts against the end face of the stop to close the second opening.
[0017] In the nail gun provided in this embodiment, the protrusion on the rear cover enters the inner cavity through the slot on the cylinder. After rotating the rear cover by a certain angle, the upper surface of the protrusion abuts against the lower surface of the stop. At this time, after pre-pressurizing the cylinder, the protrusion firmly abuts against the lower surface of the stop under the action of the pressurized gas, ensuring a stable connection between the rear cover and the cylinder and preventing it from falling off. When the user needs to replace the firing pin, they only need to rotate the rear cover by a certain angle so that the upper surface of the protrusion is within the slot, and then move the rear cover along the cylinder axis to move the protrusion away from the slot, thus separating the cylinder and the rear cover for replacement. Compared to related technologies that require rotating the rear cover multiple times to replace the firing pin, this embodiment only requires rotating the rear cover by a certain angle and then moving it along the axis to replace the firing pin, saving time in separating the cylinder and the rear cover and improving the efficiency of firing pin replacement. Attached Figure Description
[0018] 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.
[0019] Figure 1 This is a schematic diagram of a nail gun provided in an embodiment of the present disclosure;
[0020] Figure 2 An exploded view of a nail gun provided in an embodiment of this disclosure;
[0021] Figure 3 Another exploded view of the nail gun provided in this embodiment of the disclosure;
[0022] Figure 4 A schematic diagram of the structure of a back cover provided in an embodiment of this disclosure;
[0023] Figure 5 This is a schematic diagram of a cylinder provided in an embodiment of the present disclosure. Detailed Implementation
[0024] As can be seen from the background technology, the efficiency of replacing the firing pin in the nail gun of the relevant technology is relatively low.
[0025] This disclosure provides a nail gun where, when the user needs to replace the firing pin, they simply rotate the rear cover a certain angle around the cylinder circumferentially, so that the upper surface of the protrusion is within the slot. Then, the rear cover is moved along the cylinder axis, moving the protrusion away from the slot, thus separating the cylinder and the rear cover for firing pin replacement. Compared to related technologies that require rotating the rear cover multiple times to replace the firing pin, this disclosure only requires rotating the rear cover a certain angle and then moving it along the axis to replace the firing pin, saving time in separating the cylinder and the rear cover and improving the efficiency of firing pin replacement.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] In the description of embodiments of this disclosure, when a component "includes" another component, other components are not excluded unless otherwise stated, and 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 can 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. Additionally, when a component such as a layer, film, region, or plate is "directly located" on another component, or when a component such as a layer, film, region, or plate is located on the surface of another component, it indicates that no other components are located therein.
[0031] 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.
[0032] Figure 1 This is a schematic diagram of a nail gun provided in an embodiment of the present disclosure. Figure 2 An exploded view of a nail gun provided in an embodiment of this disclosure. Figure 3 Another exploded view of the nail gun provided in this embodiment of the disclosure. Figure 4 This is a schematic diagram of a back cover provided in an embodiment of the present disclosure. Figure 5 This is a schematic diagram of a cylinder provided in an embodiment of the present disclosure.
[0033] Reference Figures 1 to 5 The nail gun includes a housing 1; a firing pin disposed inside the housing 1, which fires nails; and a cylinder assembly 2 connected to the firing pin and disposed inside the housing 1, which provides power for the firing pin to fire nails. The cylinder assembly includes a cylinder 21 and a rear cover 22. The cylinder 21 has an inner cavity 211 and a first opening 212 and a second opening 213 connecting the inner cavity 211. The surface of the cylinder 21 facing the inner cavity 211 has a stop 214 and a slot 215. The rear cover 22 is detachably installed to the cylinder 21. The rear cover 22 has a protrusion 221 that enters the inner cavity 211 through the slot 215 and abuts against the end face of the stop 214 to close the second opening 213.
[0034] The housing 1 is used to protect the internal structure of the nail gun.
[0035] The firing pin contacts the nail and, driven by the air pressure within the cylinder assembly 2, fires the nail. The cylinder 21 in the cylinder assembly 2 is connected to the firing pin.
[0036] The cylinder assembly 2 includes a cylinder 21 and a rear cover 22, with the firing pin located inside the cavity 211 of the cylinder 21. Therefore, when the nail gun needs to replace the firing pin, the rear cover 22 needs to be separated from the cylinder 21 so that the user can replace the firing pin.
[0037] The cylinder 21 and the rear cover 22 are connected by a slot 215 and a stop 214. Specifically, the end of the slot 215 facing the second opening 213 passes through the end face of the cylinder 21. The slot 215 provides an entry path for the protrusion 221 to enter the inner cavity 211. After the protrusion 221 enters the inner cavity 211 through the slot 215 on the cylinder 21, it rotates the rear cover 22 by a certain angle so that the upper end face of the protrusion 221 abuts against the lower end face of the stop 214. At this time, after the cylinder 21 is pre-charged with pressurized gas, under the action of the pressurized gas, the protrusion 221 will firmly abut against the lower end face of the stop 214, so that the rear cover 22 and the cylinder 21 are stably connected and will not fall off.
[0038] The upper end face of the protrusion 221 is the end face of the protrusion 221 facing the second opening 213 when the protrusion 221 is located inside the inner cavity 211; the lower end face of the stop portion 214 is the end face of the stop portion 214 away from the second opening 213.
[0039] In some embodiments, the stop portion 214 extends along the circumferential direction of the cylinder 21, and the slot 215 and the stop portion 214 are alternately arranged. The inner diameter of the stop portion 214 is smaller than the inner diameter of the slot 215. That is, the inner diameter of the slot 215 is larger than the inner diameter of the stop portion 214, and the protrusion 221 can enter the inner cavity 211 through the slot 215. After rotating the rear cover 22 by a certain angle, the upper end face of the protrusion 221 abuts against the lower end face of the stop portion 214. When the rear cover 22 is rotated again, because the slot 215 and the stop portion 214 are alternately arranged, the protrusion 211 can rotate to the position where the slot 215 is located. At this time, the upper end face of the protrusion 221 does not abut against the lower end face of the stop portion 214, and the user can move the rear cover 22 along the axial direction X to separate the rear cover 22 from the cylinder 21.
[0040] The axial direction X of cylinder 21 is the direction from the first opening 212 to the second opening 213.
[0041] In some embodiments, four protrusions 221 and four slots 215 are provided. The four protrusions 221 are evenly and circumferentially distributed on the rear cover 22, and the four slots 215 are evenly and circumferentially distributed on the cylinder 21. The four protrusions 221 and four slots 215 are provided to connect the rear cover 22 and the cylinder 21, which can improve the reliability of the connection between the rear cover 22 and the cylinder 21.
[0042] It is understandable that although the embodiments of this disclosure require rotating the rear cover 22 at a certain angle when separating the cylinder 21 and the rear cover 22, the rotation angle is less than 90°, whereas in the non-related art, separating the threaded cylinder and the rear cover requires rotating the rear cover multiple times. Therefore, even though the nail gun of the embodiments of this disclosure still requires rotating the rear cover 22 when separating the rear cover 22 and the cylinder 21, the time required is less than that of the threaded cylinder and rear cover technical solution in the related art. The nail gun provided by the embodiments of this disclosure has higher efficiency in replacing the firing pin.
[0043] In some embodiments, the shape and size of the protrusion 221 are adapted to the shape and size of the slot 215. This arrangement allows the protrusion 221 to enter the cavity 211 via the slot 215.
[0044] In some embodiments, the rear cover includes a cover body 222 and a hollow cylinder 223 protruding from the cover body 222. A protrusion 221 is disposed on the outer periphery of the hollow cylinder 223, and the end face of the cover body 222 abuts against the end face of the cylinder 21. The cover body 222 is used to close the second opening 213.
[0045] In some embodiments, the nail gun further includes a sealing ring 3, which is fitted around the outer periphery of the hollow cylinder 223 and abuts against the inner circumferential surface of the cylinder 21. This arrangement prevents gas leakage from the cylinder 21, improving the reliability of the nail gun.
[0046] In some embodiments, a protruding structure 224 protruding from the surface of the rear cover 22 opposite to the cylinder 21 is provided. The protruding structure 224 provides a force application position for the user to rotate the rear cover 22, so that the user can rotate the rear cover 22 by hand and tools such as wrenches or pliers.
[0047] In some embodiments, four protrusions 224 are evenly and circumferentially distributed on the back cover 22. The four protrusions 224 provide multiple points of force application for rotating the back cover 22. Furthermore, the even circumferential distribution of the four protrusions 224 on the back cover 22 provides an angular reference for rotating the back cover 22; for example, rotating one protrusion 224 to the original position of an adjacent protrusion 224 means that the back cover 22 has rotated 90°.
[0048] In some embodiments, the housing 1 includes a main body 11 and a housing rear cover 12 detachably connected to the main body 11, the rear cover 22 being located between the cylinder 21 and the housing rear cover 12.
[0049] In some embodiments, the rear cover 12 of the housing is provided with four threaded holes that penetrate the rear cover 12 of the housing, and the four threaded holes are evenly and circumferentially distributed on the rear cover 12 of the housing; the nail gun also includes screws, which are placed in the threaded holes, and the main body 11 is detachably connected to the rear cover 12 of the housing by the screws.
[0050] In the nail gun described in the above embodiments, when the user needs to replace the firing pin, they only need to rotate the rear cover 22 by a certain angle so that the upper end face of the protrusion 221 is located in the stop groove, and then move the rear cover 22 along the axial direction X of the cylinder 21 so that the protrusion 221 moves away from the groove 215, thus completing the separation of the cylinder 21 and the rear cover 22, so that the user can replace the firing pin. Compared with the related technology, which requires rotating the rear cover multiple times to replace the firing pin, the embodiments of this disclosure only require slightly rotating the rear cover 22 and then moving the rear cover 22 along the axial direction X to replace the firing pin, which can save the time of separating the cylinder 21 and the rear cover 22 and improve the efficiency of replacing the firing pin.
[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 characterized by, The nail gun comprises: a housing; a firing pin arranged in the housing, the firing pin being fired to shoot a nail; a cylinder assembly arranged in the housing and connected with the firing pin, the cylinder assembly powering the firing pin to shoot a nail, the cylinder assembly comprising a cylinder and a rear cover; the cylinder is provided with an inner cavity, a first opening and a second opening connecting two ends of the inner cavity, the firing pin moving in the inner cavity through the first opening, a surface of the inner cavity close to the second opening being provided with a stopper and a notch, the rear cover is detachably mounted to the cylinder, the rear cover being provided with protrusions matched with the notches, the protrusions entering the inner cavity through the notches and abutting against end faces of the stoppers to close the second opening.
2. The nail gun of claim 1, wherein, The stoppers extend along the circumferential direction of the cylinder, the notches are arranged alternately with the stoppers, and the inner diameter of the stoppers is smaller than that of the notches.
3. The nail gun of claim 2, wherein, The protrusions and the notches are respectively provided with four, and the four protrusions are uniformly and circumferentially distributed on the rear cover, and the four notches are uniformly and circumferentially distributed on the cylinder.
4. The nail gun of claim 1, wherein, The shape and size of the protrusions are matched with those of the notches.
5. The nail gun of claim 1, wherein, The rear cover comprises a cover body and a hollow cylinder protruding from the cover body, the protrusions are arranged on the outer periphery of the hollow cylinder, and the end face of the cover body abuts against the end face of the cylinder.
6. The nail gun of claim 5, wherein, The nail gun further comprises a sealing ring, the sealing ring being sleeved on the outer periphery of the hollow cylinder and abutting against the inner peripheral surface of the cylinder.
7. The nail gun of claim 1, wherein, The surface of the rear cover away from the cylinder is provided with protruding structures protruding from the surface of the rear cover.
8. The nail gun of claim 7, wherein, The four protruding structures are uniformly and circumferentially distributed on the rear cover.
9. The nail gun of any one of claims 1-8, wherein, The housing comprises a main body and a housing rear cover detachably connected to the main body, the rear cover being located between the cylinder and the housing rear cover.
10. The nail gun of claim 9, wherein, The housing rear cover is provided with four threaded holes penetrating through the housing rear cover, the four threaded holes being uniformly and circumferentially distributed on the housing rear cover; the nail gun further comprises screws, the screws being arranged in the threaded holes, and the main body and the housing rear cover being detachably connected through the screws.