Power device and nail gun

Abstract

The utility model discloses a power device and a nail gun, and belongs to the technical field of power tools. The power device comprises a first cylinder body and a second cylinder body, the first cylinder body is provided with a first cavity, the first cylinder body is provided with an access hole, the access hole is communicated with the first cavity, and the access hole is used for allowing fluid to enter and exit; at least part of the second cylinder body can be located in the first cylinder body, the second cylinder body is provided with a second cavity, and the second cavity is communicated with the first cavity; one of the first cylinder body and the second cylinder body is connected with a gun body of the nail gun, the other cylinder body is used for acting on a firing pin of the nail gun, and the first cylinder body and the second cylinder body can extend out relatively so as to drive the firing pin to extend out of the gun body. According to the scheme, the volume of the power device can be effectively increased, so that the power device can store more fluid, the power of the power device is improved, the striking force of the nail gun is improved, meanwhile, the first cylinder body or the second cylinder body directly acts on the striker, the volume of the power device is reduced, and the volume of the nail gun is reduced.

Description

Technical Field

[0001] This application belongs to the field of power tool technology, specifically relating to a power device and a nail gun. Background Technology

[0002] A nail gun is a common industrial device widely used in construction, furniture manufacturing, automobile manufacturing, and other fields. A nail gun uses a cylinder to drive a firing pin, which propels the nails out. By reciprocating the firing pin's motion, nails in the magazine are sequentially ejected, allowing for continuous nailing.

[0003] In related technologies, nail guns achieve nailing by compressing the volume of gas inside a cylinder and utilizing the pressure difference of the gas. However, due to the limitation of the cylinder volume, the amount of gas that can be stored in the cylinder is limited, resulting in a relatively small striking force from the nail gun.

[0004] Therefore, the nail gun in the relevant technology has the drawback of having relatively low striking force. Utility Model Content

[0005] The purpose of this application is to provide a power device and nail gun that can solve the problem of insufficient striking force of nail guns in related technologies.

[0006] In a first aspect, embodiments of this application provide a power device, the power device comprising:

[0007] A first cylinder body, the first cylinder body is provided with a first cavity, the first cylinder body is provided with an inlet and outlet hole, the inlet and outlet hole is connected to the first cavity, and the inlet and outlet hole is used to allow fluid to enter and exit.

[0008] A second cylinder body, at least a portion of which may be located within the first cylinder body, the second cylinder body having a second cavity that communicates with the first cavity;

[0009] One of the first cylinder and the second cylinder is used to connect to the gun body of the nail gun, and the other is used to act on the firing pin of the nail gun. The first cylinder and the second cylinder can extend relative to each other to drive the firing pin to extend out of the gun body.

[0010] Secondly, this application also provides a nail gun, which includes a gun body, a firing pin, and the aforementioned power device. The firing pin is telescopically mounted on the gun body. One of the first cylinder and the second cylinder of the power device is connected to the gun body, and the other acts on the firing pin.

[0011] In this embodiment of the application, by providing a second cavity on the second cylinder, the volume of the power unit can be effectively increased, thereby enabling the power unit to store more fluid, which can improve the power of the power unit and thus increase the striking force of the nail gun. At the same time, by making the first cylinder or the second cylinder act directly on the firing pin, it is beneficial to reduce the volume of the power unit, thereby reducing the volume of the nail gun. Attached Figure Description

[0012] Figure 1 This is a perspective view of the nail gun disclosed in the embodiments of this application;

[0013] Figure 2 This is a front view of the nail gun disclosed in the embodiments of this application;

[0014] Figure 3 This is a top view of the nail gun disclosed in the embodiments of this application;

[0015] Figure 4 yes Figure 3 A sectional view along line AA in the middle;

[0016] Figure 5 This is a diagram showing the connection relationship between the power unit and the firing pin disclosed in the embodiments of this application from a stereoscopic perspective;

[0017] Figure 6 This is a diagram showing the connection relationship between the power unit and the firing pin disclosed in the embodiments of this application from a top-down view.

[0018] Figure 7 yes Figure 6 A sectional view along the BB direction in the middle;

[0019] Figure 8 This is a side view of the power unit disclosed in the embodiments of this application;

[0020] Figure 9 yes Figure 8 A cross-sectional view along the CC direction in the middle;

[0021] Figure 10 This is one of the connection diagrams between the power unit and the nail gun body disclosed in the embodiments of this application;

[0022] Figure 11 This is the second diagram showing the connection between the power unit and the nail gun body disclosed in the embodiments of this application (with the first cylinder body hidden).

[0023] Figure 12 This is one of the connection diagrams of the fixing frame and the buffer disclosed in the embodiments of this application;

[0024] Figure 13 This is the second diagram showing the connection relationship between the fixing frame and the buffer disclosed in the embodiments of this application;

[0025] Figure 14 This is one of the connection diagrams of the fixing frame and lifting device disclosed in the embodiments of this application;

[0026] Figure 15 This is the second diagram showing the connection relationship between the fixing frame and the lifting device disclosed in the embodiments of this application;

[0027] Figure 16 This is one of the perspective views of the lifting device disclosed in the embodiments of this application;

[0028] Figure 17 This is a second perspective view of the lifting device disclosed in the embodiments of this application;

[0029] Figure 18 This is one of the connection diagrams between the lifting rack and the transmission disclosed in the embodiments of this application;

[0030] Figure 19 This is the second diagram showing the connection relationship between the lifting rack and the transmission disclosed in the embodiments of this application;

[0031] Figure 20 This is a perspective view of the lifting rack disclosed in the embodiments of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100 - Gun body; 110 - Fixing bracket; 111 - First connecting bracket; 1111 - Connecting hole;

[0034] 112-Second connecting bracket; 1121-Rotary mounting hole; 113-Connecting part; 1131-Through hole;

[0035] 114 - Nozzle connector; 120 - Nozzle; 130 - Fixing seat; 131 - First limiting groove;

[0036] 132 - Second protrusion; 200 - Firing pin; 210 - Locking element; 220 - Abutment part; 300 - Power unit;

[0037] 310 - First cylinder block; 311 - First cavity; 312 - First seal; 313 - Inlet / outlet port;

[0038] 314 - Valve mounting section; 320 - Second cylinder block; 321 - Second cavity; 322 - Second seal;

[0039] 323 - Slot; 324 - Groove; 325 - Limiting part; 3251 - Rack and pinion connection part; 330 - Valve;

[0040] 400 - Lifting device; 410 - Lifting rack; 411 - Connecting part; 412 - First protrusion;

[0041] 413 - Second limiting groove; 420 - Drive motor; 430 - Lifting assembly; 431 - Rotating component;

[0042] 432 - Lifting pin; 440 - Gearbox; 441 - First-stage transmission component; 442 - Second-stage transmission component;

[0043] 443 - Output frame; 444 - Transmission housing; 450 - Drive gear; 460 - Transmission gear; 500 - Buffer component;

[0044] 510 - First buffer section; 520 - Second buffer section; 530 - Locking part; 600 - Magazine;

[0045] 700 - Safety frame assembly; 800 - Depth adjustment mechanism. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0047] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0048] The power device and nail gun provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0049] refer to Figures 1-20 The power unit 300 provided in this application embodiment may include a first cylinder 310 and a second cylinder 320.

[0050] The first cylinder 310 may be provided with a first cavity 311, and the first cylinder 310 may be provided with an inlet / outlet hole 313, which may communicate with the first cavity 311. The inlet / outlet hole 313 can be used to allow fluid to enter and exit, so that fluid can enter and exit the first cavity 311. Here, the fluid can be a gas, or of course, the fluid can also be a liquid.

[0051] At least a portion of the second cylinder 320 may be located within the first cylinder 310, and the second cylinder 320 may be provided with a second cavity 321, which may communicate with the first cavity 311 so that fluid may flow into the second cavity 321.

[0052] Furthermore, one of the first cylinder 310 and the second cylinder 320 can be connected to the gun body 100 of the nail gun, and the other can act on the firing pin 200 of the nail gun. The first cylinder 310 and the second cylinder 320 can extend relative to each other so as to drive the firing pin 200 to extend out of the gun body 100.

[0053] In this embodiment, by providing a second cavity 321 on the second cylinder 320, the volume of the power unit 300 can be effectively increased, thereby enabling the power unit 300 to store more fluid, which can improve the power of the power unit 300 and thus increase the striking force of the nail gun. At the same time, by making the first cylinder 310 or the second cylinder 320 act directly on the firing pin 200, the firing pin 200 can extend out of the gun body 100, which helps to reduce the volume of the power unit 300, thereby helping to reduce the volume of the nail gun.

[0054] In an optional embodiment, the first cylinder 310 of the power unit 300 can be connected to the gun body 100, and the second cylinder 320 can act on the firing pin 200. The second cylinder 320 extends from the first cylinder 310 and can drive the firing pin 200 to extend out of the gun body 100. With this configuration, compared to the first cylinder 310 acting on the firing pin 200, the second cylinder 320 is smaller in volume than the first cylinder 310, making it easier to drive the second cylinder 320 to move, and consequently, easier to drive the firing pin 200 to move. Of course, the first cylinder 310 can also act on the firing pin 200, and the second cylinder 320 can also be connected to the gun body 100.

[0055] It should be noted that either the first cylinder 310 or the second cylinder 320 can be connected to or in contact with the firing pin 200. Here, the first cylinder 310 or the second cylinder 320 only needs to be able to apply a force that can extend out of the gun body 100 to the firing pin 200.

[0056] In an optional embodiment, the power unit 300 may further include a valve 330 connected to the first cylinder block 310, and the valve 330 may be used to control the intake and exhaust of gas. A valve fixing part 314 may be provided in the first cylinder block 310, an inlet / outlet hole 313 may be provided on the valve fixing part 314, and the valve 330 may be installed in the inlet / outlet hole 313.

[0057] Based on the power device 300 provided in the embodiments of this application, the embodiments of this application also provide a nail gun. The nail gun may include a gun body 100, a firing pin 200 and the power device 300 described in the above embodiments. The firing pin 200 is telescopically disposed on the gun body 100. One of the first cylinder 310 and the second cylinder 320 of the power device 300 may be connected to the gun body 100, and the other may act on the firing pin 200 to drive the firing pin 200 to extend out of the gun body 100.

[0058] The beneficial effects achieved by the nail gun provided in this application embodiment are consistent with the beneficial effects achieved by the power device 300 provided in this application embodiment, and will not be repeated here.

[0059] In an optional embodiment of this application, the first cylinder 310 of the power unit 300 can be connected to the gun body 100, and the second cylinder 320 can act on the firing pin 200. The second cylinder 320 extends out of the first cylinder 310 and can drive the firing pin 200 to extend out of the gun body 100.

[0060] In an optional embodiment, the gun body 100 may be provided with a connecting portion 113, which may be located inside and connected to the first cylinder 310, and a first sealing element 312 may be provided between the connecting portion 113 and the inner wall of the first cylinder 310; the connecting portion 113 may be provided with a through hole 1131, the second cylinder 320 is movably disposed within the through hole 1131, and a second sealing element 322 may be provided between the outer wall of the second cylinder 320 and the hole wall of the through hole 1131. This configuration, on the one hand, enables the connection between the gun body 100 and the power device 300, and maximizes the volume of the power device 300 while promoting the miniaturization of the nail gun; on the other hand, the connecting portion 113 can provide support and guidance for the second cylinder 320, thereby preventing the second cylinder 320 from shaking or shifting during extension and retraction.

[0061] In other embodiments, the gun body 100 may not have the connecting part 113. The first cylinder 310 may be connected to the gun body 100 by a fastener. The second cylinder 320 may be telescopically disposed inside the first cylinder 310. A sealing element may be provided between the outer wall of the second cylinder 320 and the inner wall of the first cylinder 310.

[0062] In an optional embodiment, an annular groove may be provided on the connecting portion 113. The annular groove may be coaxially arranged with the through hole 1131, and a portion of the second seal 322 may be installed in the annular groove. With this arrangement, the second seal 322 is less likely to fall off due to the force of the second cylinder 320 during the movement of the second cylinder 320. Here, both the first seal 312 and the second seal 322 can be sealing rings, and both the first seal 312 and the second seal 322 can be made of flexible materials such as silicone or rubber.

[0063] In an optional embodiment, the gun body 100 may include a fixing frame 110 and a nozzle 120 connected to the fixing frame 110. The connecting portion 113 may be disposed at the end of the fixing frame 110 away from the nozzle 120. Optionally, the fixing frame 110 may include at least two first connecting frames 111, each of which may extend along the moving direction of the second cylinder 320. The second cylinder 320 is provided with at least two limiting portions 325, which are respectively disposed on opposite sides of the second cylinder 320. Each limiting portion 325 is clearance-fitted with or in contact with each of the first connecting frames 111. With this configuration, the first connecting frames 111 can limit the movement of the second cylinder 320 in a direction perpendicular to the moving direction of the second cylinder 320, thereby further preventing the second cylinder 320 from shaking or shifting during extension and retraction.

[0064] In an optional embodiment of this application, the nail gun may further include a lifting device 400. One of the first cylinder 310 and the second cylinder 320, which is movable relative to the gun body 100, may be connected to the lifting device 400. The lifting device 400 may drive the first cylinder 310 and the second cylinder 320 to retract relative to each other, so that the first cylinder 310 and the second cylinder 320 return to their initial positions. In this embodiment, the second cylinder 320 may be connected to the lifting device 400, and the lifting device 400 may drive the second cylinder 320 to retract.

[0065] When the striker 200 is connected to the first cylinder 310 or the second cylinder 320, the first cylinder 310 and the second cylinder 320 can be driven to retract relative to each other by the lifting device 400, thereby lifting the striker 200 and resetting it.

[0066] This configuration, compared to resetting the power unit 300 by lifting the striker 200, has several advantages. First, it reduces the force on the striker 200, thus extending its service life. Second, it reduces the overall length of the nail gun, facilitating its miniaturization. Furthermore, when the striker 200 is connected to the first cylinder 310 or the second cylinder 320, it can be indirectly lifted by lifting the first cylinder 310 or the second cylinder 320, eliminating the need to apply force to the striker 200. This effectively reduces the force on the striker 200, further extending its service life. Additionally, it eliminates the need for lifting teeth on the striker 200, thereby increasing its strength.

[0067] In other embodiments, the lifting device 400 may be connected to the striker 200, and the lifting device 400 may drive the striker 200 to move in the direction of contraction of the first cylinder 310 or the second cylinder 320 to achieve the lifting of the striker 200.

[0068] In an optional embodiment, the lifting device 400 may include a drive motor 420, a lifting rack 410, and a lifting assembly 430. The drive motor 420 may be connected to the gun body 100. The lifting rack 410 is movably mounted on the gun body 100 and may be connected to either the first cylinder 310 or the second cylinder 320. The lifting assembly 430 may be connected to the drive motor 420. The drive motor 420 can drive the lifting assembly 430 to rotate, and the lifting assembly 430 can mesh with the lifting rack 410 to move the lifting rack 410 along the direction from the firing pin 200 to the power device 300. This configuration facilitates lifting the first cylinder 310 or the second cylinder 320 and reduces the likelihood of the lifting assembly 430 failing to lift the firing pin 200. Furthermore, since the lifting rack 410 is mounted on the gun body 100, it is easy to replace if it malfunctions or is damaged, and it does not significantly affect the normal operation of the firing pin 200.

[0069] In other embodiments, the lifting device 400 may not include the lifting rack 410. The lifting component 430 may contact the first cylinder 310 or the second cylinder 320, and the first cylinder 310 or the second cylinder 320 may be retracted by the friction between the lifting component 430 and the first cylinder 310 or the second cylinder 320.

[0070] Optionally, the lifting assembly 430 may include a rotating member 431 and a lifting pin 432. The rotating member 431 may be rotatably connected to the gun body 100 and drively connected to the drive motor 420. The lifting pin 432 may be disposed on the rotating member 431 and may mesh with the lifting rack 410. When the drive motor 420 drives the rotating member 431 to rotate, the lifting pin 432 may connect with any tooth of the lifting rack 410. As the rotating member 431 rotates, the lifting pin 432 may drive the first cylinder 310 or the second cylinder 320 to retract, thereby driving the firing pin 200 to move in the direction from the nozzle 120 to the power device 300, thereby realizing the lifting of the firing pin 200.

[0071] Here, the lifting pin 432 is engaged with the lifting rack 410. Compared with the method of engaging the gear with the lifting rack 410, the lifting pin 432 can be used as an independent transmission element. When the lifting pin 432 fails or wears out, it is easy to replace and maintain.

[0072] Of course, the lifting assembly 430 may also include a gear, which is connected to the drive motor 420 and meshes with the lifting rack 410.

[0073] In this embodiment, the lifting rack 410 can be connected to the second cylinder 320. Optionally, the fixing frame 110 mentioned above may further include a second connecting frame 112, which may be spaced apart from the first connecting frame 111. The ends of the second connecting frame 112 and the first connecting frame 111 near the first cylinder 310 are both connected to the connecting portion 113. The ends of the first connecting frame 111 and the second connecting frame 112 away from the first cylinder 310 can be connected through a nozzle connecting seat 114, which can be connected to the nozzle 120. Here, the second connecting frame 112 may be located below the first connecting frame 111, and a rotating mounting hole 1121 may be provided on the second connecting frame 112. The rotating component 431 can be connected to the rotating mounting hole 1121 through a bearing.

[0074] Optionally, the lifting assembly 430 may include multiple lifting pins 432, which can be sequentially connected to multiple teeth of the lifting rack 410, thereby improving lifting efficiency. Furthermore, the rotating member 431 may be provided with a clearance space, which can be opposite to the lifting rack 410 when the second cylinder 320 extends. With this configuration, when the driving striker 200 extends to drive the fixed pin to be ejected, the drive motor 420 can drive the rotating member 431 to rotate, causing the multiple lifting pins 432 to move away from the lifting rack 410 and the clearance space to be opposite to the lifting rack 410. This ensures that the lifting pins 432 do not obstruct the movement of the second cylinder 320, thus guaranteeing that the striker 200 can extend normally.

[0075] Here, the lifting assembly 430 may include two lifting pins 432, or three or more lifting pins 432. Alternatively, the number of lifting pins 432 may correspond to the number of teeth on the lifting rack 410.

[0076] Of course, the lifting assembly 430 may also include only one lifting pin 432. Alternatively, the lifting assembly 430 may include multiple lifting pins 432, and the multiple lifting pins 432 may be evenly distributed along the circumference of the rotating member 431.

[0077] To improve the stability of the lifting pin 432, the lifting assembly 430 may include two rotating parts 431, which may be arranged in parallel and coaxially connected. Each lifting pin 432 is located between the two rotating parts 431 and is connected to both rotating parts 431.

[0078] Optionally, the lifting rack 410 may be provided with a connecting member 411, which can be connected to the second cylinder 320. Specifically, one of the at least two limiting parts 325 mentioned above is provided with a rack connecting part 3251, which can be connected to the connecting member 411. Further optionally, in order to improve the connection strength between the rack connecting part 3251 and the connecting member 411, the lifting rack 410 may be provided with two spaced-apart connecting members 411. The rack connecting part 3251 on the second cylinder 320 can extend between the two connecting members 411, and the rack connecting part 3251 can be connected to the two connecting members 411 respectively through at least two connecting shafts.

[0079] Of course, the rack connecting part 3251 can also be connected to the two connecting parts 411 through only one connecting shaft, and the connecting shaft can also rotate relative to the connecting parts 411. With this configuration, when the second cylinder body 320 rotates or shifts during movement, the rack connecting part 3251 and the connecting parts 411 can rotate or shift relative to each other, which helps to reduce the stress between the rack connecting part 3251 and the connecting parts 411, thereby helping to extend the service life of the rack connecting part 3251 and the connecting parts 411. At the same time, it can also provide a certain tolerance for the second cylinder body 320, which helps to reduce the stress on the second cylinder body 320, thereby helping to extend the service life of the second cylinder body 320.

[0080] In an optional embodiment, the lifting device 400 may further include a drive gear 450 and a transmission gear 460. The drive gear 450 may be connected to the output shaft of the drive motor 420, the transmission gear 460 may mesh with the drive gear 450, and the transmission gear 460 may be coaxially connected to the rotating member 431 so as to drive the rotating member 431 to rotate.

[0081] In addition, the nail gun may also include a gearbox 440, and the output shaft of the drive motor 420 can be connected to the drive gear 450 through the gearbox 440. Optionally, the gearbox 440 may include a gearbox housing 444 and a primary gearbox component 441, a secondary gearbox component 442, and an output frame 443 connected in sequence. The primary gearbox component 441, the secondary gearbox component 442, and the output frame 443 can all be located inside the gearbox housing 444. The gearbox housing 444 can be connected to the gun body 100 through connecting screws. The primary gearbox component 441 can be connected to the output shaft of the drive motor 420, and the drive gear 450 can be connected to the output frame 443.

[0082] Optionally, a fixed seat 130 may be provided on the transmission housing 444, and the lifting rack 410 is movably disposed on the fixed seat 130, and the moving direction of the lifting rack 410 is consistent with the moving direction of the second cylinder 320.

[0083] To improve the connection stability between the rack 410 and the fixed base 130, such as Figures 18-20 As shown, a first limiting groove 131 can be provided on the fixed base 130, and a first protrusion 412 can be provided on the lifting rack 410. The first protrusion 412 can be slidably disposed in the first limiting groove 131, and in the direction from the rotating member 431 to the lifting rack 410, the first protrusion 412 and the first limiting groove 131 are mutually limiting and cooperating. In this way, the first limiting groove 131 can restrict the lifting rack 410 from moving away from the rotating member 431, thereby preventing the lifting rack 410 from disengaging from the lifting pin 432 and causing the lifting pin 432 to be unable to mesh with the lifting rack 410.

[0084] The lifting rack 410 may also be provided with a second limiting groove 413, and the fixed base 130 may also be provided with a second protrusion 132. The second protrusion 132 is located in the second limiting groove 413. The second limiting groove 413 and the second protrusion 132 can slide relative to each other. In the direction from the rotating member 431 to the drive motor 420, the second limiting groove 413 and the second protrusion 132 are matched in a limiting manner. This arrangement can prevent the lifting rack 410 and the rotating member 431 from forming axial contact and causing mutual wear and mutual interference, thus preventing relative movement.

[0085] In an optional embodiment, the nail gun may further include a reset elastic element. One end of the reset elastic element can be connected to the gun body 100, and the other end of the reset elastic element can act on the firing pin 200. The reset elastic element can be used to drive the firing pin 200 to reset, that is, the reset elastic element can lift the firing pin 200. This configuration makes it easier to ensure that the firing pin 200 can be reset, so as to facilitate the next nail-firing operation. Furthermore, when the first cylinder 310 or the second cylinder 320 acts on the firing pin 200 through contact, the reset elastic element can achieve the reset of the firing pin 200. Here, the reset elastic element can be a compression spring, a torsion spring, or other elastic structure.

[0086] Of course, a nail gun may not include a reset elastic element.

[0087] In an optional embodiment of this application, the nail gun may further include a buffer 500, which may be disposed on the gun body 100. The end of the first cylinder 310 or the second cylinder 320 near the firing pin 200 may contact the buffer 500. This arrangement allows the buffer 500 to effectively absorb the impact force generated by the first cylinder 310 or the second cylinder 320 during movement, thereby reducing the direct impact of the first cylinder 310 or the second cylinder 320 on the gun body 100. This avoids hard contact between the first cylinder 310 or the second cylinder 320 and the gun body 100, thus protecting both the first cylinder 310 or the second cylinder 320 and the gun body 100. Furthermore, the buffer 500 can reduce energy loss during transmission, thereby improving the striking efficiency of the firing pin 200.

[0088] In other embodiments, the nail gun may also exclude the buffer 500.

[0089] It should be noted that the buffer 500 may be provided with a through hole for the striker 200 to pass through. This design can prevent the buffer 500 from affecting the movement of the striker 200.

[0090] In an optional embodiment, a groove 324 may be provided at the end of the first cylinder 310 or the second cylinder 320 near the firing pin 200. The buffer member 500 may include a first buffer portion 510 and a second buffer portion 520 connected to the first buffer portion 510. The first buffer portion 510 may be connected to the gun body 100, and the second buffer portion 520 may be located on the side of the first buffer portion 510 near the power device 300. Furthermore, the second buffer portion 520 may be embedded in the groove 324. With this configuration, through the mutual cooperation between the second buffer portion 520 and the groove 324, when the first cylinder 310 or the second cylinder 320 collides with the buffer member 500, displacement or detachment of the buffer member 500 can be prevented. At the same time, the embedding of the second buffer portion 520 in the groove 324 helps to increase the contact area between the first cylinder 310 or the second cylinder 320 and the buffer member 500, thereby improving the buffering effect.

[0091] Of course, the groove 324 may not be provided at the end of the first cylinder 310 or the second cylinder 320 near the striker 200, and the buffer 500 may only include the first buffer part 510, with the end of the first cylinder 310 or the second cylinder 320 near the striker 200 in contact with the first buffer part 510.

[0092] Optionally, the cross-sectional area of ​​the second buffer portion 520 can gradually decrease along the direction from the first buffer portion 510 to the second buffer portion 520. This arrangement facilitates the embedding of the second buffer portion 520 into the groove 324.

[0093] Of course, the cross-sectional area of ​​the second buffer portion 520 can remain unchanged along the direction from the first buffer portion 510 to the second buffer portion 520.

[0094] Optionally, the first buffer portion 510 may be provided with snap-fit ​​portions 530 on both opposite sides, and the two first connecting brackets 111 mentioned above may be provided with connecting holes 1111. The two snap-fit ​​portions 530 can pass through the connecting holes 1111 of the two first connecting brackets 111 respectively, so that the first buffer portion 510 is installed on the fixing bracket 110. Here, the connecting hole 1111 on the first connecting bracket 111 can be a strip hole and extend along the moving direction of the second cylinder 320. With this configuration, the connecting hole 1111 can serve as a weight-reduction hole, thereby reducing the weight of the fixing bracket 110.

[0095] In an optional embodiment, the striker 200 is detachably connected to the first cylinder 310 or the second cylinder 320, which facilitates the replacement of the striker 200 or the power unit 300.

[0096] In one embodiment, the striker 200 may be provided with one of a slot 323 and a retainer 210, and the first cylinder 310 or the second cylinder 320 may be provided with the other of the slot 323 and retainer 210, with the retainer 210 engaging with the slot 323. This arrangement facilitates the assembly and disassembly of the striker 200.

[0097] Of course, the striker 200 and the first cylinder 310 or the second cylinder 320 may not be provided with the slot 323 and the clip 210, and the striker 200 and the first cylinder 310 or the second cylinder 320 may be an integral structure.

[0098] In this embodiment, a slot 323 is provided on the first cylinder 310 or the second cylinder 320, and a retainer 210 is provided on the striker 200. Optionally, in order to improve the buffering effect, the striker 200 may also be provided with an abutment portion 220, which can be connected to the retainer 210. When the first cylinder 310 or the second cylinder 320 is extended into position, the abutment portion 220 can contact the second buffer portion 520 to increase the contact area with the buffer member 500, thereby improving the buffering effect of the buffer member 500.

[0099] In another embodiment, the first cylinder 310 or the second cylinder 320 may be threadedly connected to the firing pin 200.

[0100] In an optional embodiment of this application, the nail gun may further include a safety frame assembly 700, which may include a safety sleeve. The safety sleeve may be fitted over the nozzle 120 of the nail gun, and its working end face may be used to contact the workpiece. The nail gun may also include a depth adjustment mechanism 800, and the safety frame may be connected to the depth adjustment mechanism 800. The depth adjustment mechanism 800 may be used to adjust the distance between the working end face of the safety sleeve and the nozzle 120 in the nail delivery direction. In this way, the depth adjustment mechanism 800 can adjust the nailing depth of the fixing nail by adjusting the distance between the working end face of the safety sleeve and the nozzle 120.

[0101] The nail gun may also include a magazine 600, which stores fixing nails and has a nail-pushing device inside. The nail-pushing device is used to hold the fixing nails in place so that the fixing nails enter the channel of the nozzle 120 of the nail gun in sequence, thereby causing the firing pin 200 to eject the fixing nails in sequence.

[0102] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A power device, characterized in that, include: A first cylinder body (310) is provided with a first cavity (311). An inlet / outlet hole (313) is provided on the first cylinder body (310). The inlet / outlet hole (313) communicates with the first cavity (311) and is used for fluid to enter and exit. A second cylinder (320) may be located within the first cylinder (310), and the second cylinder (320) is provided with a second cavity (321) that communicates with the first cavity (311). One of the first cylinder (310) and the second cylinder (320) is used to connect to the gun body (100) of the nail gun, and the other is used to act on the firing pin (200) of the nail gun. The first cylinder (310) and the second cylinder (320) can extend relative to each other to drive the firing pin (200) to extend out of the gun body (100).

2. A nail gun, characterized in that, The device includes a gun body (100), a firing pin (200), and a power unit (300) as described in claim 1. The firing pin (200) is telescopically mounted on the gun body (100). One of the first cylinder (310) and the second cylinder (320) of the power unit (300) is connected to the gun body (100), and the other acts on the firing pin (200).

3. The nail gun according to claim 2, characterized in that, The gun body (100) is provided with a connecting part (113), which is located inside the first cylinder (310) and connected to the first cylinder (310), and a first sealing element (312) is provided between the connecting part (113) and the inner wall of the first cylinder (310). The connecting part (113) is provided with a through hole (1131), the second cylinder (320) is movably disposed in the through hole (1131), and a second sealing element (322) is provided between the outer wall of the second cylinder (320) and the hole wall of the through hole (1131).

4. The nail gun according to claim 2, characterized in that, The nail gun also includes a lifting device (400), one of the first cylinder (310) and the second cylinder (320) which is movable relative to the gun body (100) is connected to the lifting device (400), and the lifting device (400) can drive the first cylinder (310) and the second cylinder (320) to retract relative to each other.

5. The nail gun according to claim 4, characterized in that, The lifting device (400) includes: A drive motor (420) is connected to the gun body (100); A lifting rack (410) is movably mounted on the gun body (100), and the lifting rack (410) is connected to the first cylinder (310) or the second cylinder (320); The lifting assembly (430) is connected to the drive motor (420) for driving the lifting assembly (430) to rotate. The lifting assembly (430) can mesh with the lifting rack (410) so that the lifting rack (410) moves along the direction from the striker (200) to the power device (300).

6. The nail gun according to claim 5, characterized in that, The lifting assembly (430) includes a rotating part (431) and a lifting pin (432). The rotating part (431) is rotatably connected to the gun body (100) and is connected to the drive motor (420). The lifting pin (432) is disposed on the rotating part (431) and can mesh with the lifting rack (410).

7. The nail gun according to claim 4, characterized in that, The nail gun also includes a reset elastic element, one end of which is connected to the gun body (100), and the other end of which acts on the firing pin (200). The reset elastic element is used to drive the firing pin (200) to reset.

8. The nail gun according to claim 2, characterized in that, The nail gun also includes a buffer (500), which is disposed on the gun body (100), and the end of the first cylinder (310) or the second cylinder (320) near the firing pin (200) can contact the buffer (500).

9. The nail gun according to claim 8, characterized in that, The first cylinder (310) or the second cylinder (320) has a groove (324) at one end near the firing pin (200). The buffer (500) includes a first buffer part (510) and a second buffer part (520) connected to the first buffer part (510). The first buffer part (510) is connected to the gun body (100). The second buffer part (520) is located on the side of the first buffer part (510) near the power device (300), and the second buffer part (520) can be embedded in the groove (324).

10. The nail gun according to claim 9, characterized in that, Along the direction from the first buffer portion (510) to the second buffer portion (520), the cross-sectional area of ​​the second buffer portion (520) gradually decreases.

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