Nailing mechanism and nail gun

Abstract

The present application belongs to the technical field of fastening tools, and particularly relates to a nail passing mechanism and a nail gun. The nail passing mechanism comprises: a gun nozzle component for mounting a cartridge body of a cartridge mechanism and provided with a nail hole for the nail to pass into the cartridge body; and a cover plate component arranged above the gun nozzle component, wherein a nail passing channel for the movement of a striker component of a striking mechanism and the passing of the nail is arranged between the gun nozzle component and the cover plate component, a relief groove for avoiding the tooth block of the striker component is arranged on the cover plate component, and a blocking protruding edge protruding from the surface of the nail passing channel is arranged on one side of the gun nozzle component, which is located on the same side of the relief groove and used for preventing the nail from deviating into the relief groove. The nail of the present application can only be sent along the nail shooting direction when being hit out, and cannot deviate to the side, thereby ensuring the accuracy of the nail being hit out and avoiding the nail from being stuck in the nail passing channel due to uneven force.

Description

Technical Field

[0001] This invention belongs to the field of fastening tool technology, specifically relating to a nail-passing mechanism and a nail gun. Background Technology

[0002] A nail gun is a fastening tool, mostly used in construction. Currently, the most widely used type of nail gun is the electric nail gun that uses a lithium battery. This type of nail gun uses a drive motor and a corresponding transmission structure to push a piston. The piston then compresses a force spring or compressed gas to store energy. When shooting a nail, the force spring or air pressure drives the piston to move, which in turn drives the firing pin mounted on the piston to strike and shoot out the nail.

[0003] In existing nail guns, the transmission mechanism that drives the piston typically uses a rack and pinion system. A rack is mounted on the firing pin, and a gear is mounted on the drive motor. The drive motor rotates the gear, and the rack meshes with it. During the gear's rotation, the rack moves laterally, storing energy by compressing the power spring or gas. When the gear rotates to a state where it is not engaged with the firing pin, the power spring or gas pressure pushes the firing pin out, which then fires the nail.

[0004] The head of a nail gun is equipped with a magazine mechanism for storing nails. The nails are fed out by the magazine mechanism and are parallel to the firing pin. Existing nail guns have a nail-passing groove at the head. The nail is driven out along this groove, and the firing pin's tip must also pass through it when it strikes the nail. Because the firing pin has a toothed rack on its side for driving, the nail-passing groove is usually designed to be relatively wide to allow the firing pin to pass through. However, precisely because the nail-passing groove of existing nail guns is too wide, if the force on the nail is uneven when the firing pin strikes it, the nail can easily deviate during firing, causing it to get stuck in the groove and unable to pass through properly. Summary of the Invention

[0005] To solve the above problems, this invention provides a nail-passing mechanism that prevents the nail from shifting and getting stuck in the nail-passing groove, and a nail gun equipped with such a nail-passing mechanism. The technical solution adopted by this invention is as follows:

[0006] This invention provides a nail-passing mechanism, installed on a nail gun, for use between the striking mechanism in the driving device of the nail gun and the magazine mechanism of the nail storage device to strike the nail out. It features the following technical characteristics: a nozzle component, a magazine body for mounting the magazine mechanism, and a nail hole for passing through and allowing the nail within the magazine body to exit; a cover plate component covering the nozzle component; a nail-passing channel between the nozzle component and the cover plate component for the movement of the firing pin component of the striking mechanism and for the nail to pass through; a clearance groove on the cover plate component for avoiding the toothed blocks of the firing pin component; and a blocking flange protruding from the nail-passing channel surface on one side of the nozzle component near the nail hole, the blocking flange being on the same side as the clearance groove to prevent the nail from deviating into the clearance groove.

[0007] The nail-passing mechanism provided by the present invention may also have the following technical feature: the cover plate component is provided with a guide strip on one side of the clearance groove for cooperating with the main guide groove of the firing pin component.

[0008] The nail-passing mechanism provided by the present invention may also have the following technical feature: the nozzle component is provided with a mounting hole for installing a magnet on the front side of the nail hole.

[0009] The nail-passing mechanism provided by the present invention may also have the following technical feature: the nozzle component and the cover plate component are fixedly installed by screws.

[0010] The present invention also proposes a nail gun having the following technical features, including at least: a nail storage device, having a magazine mechanism for storing nails, a drive device, having a striking mechanism for pushing the nails and firing them in the striking direction, wherein the magazine mechanism and the striking mechanism are mounted together by a nail-passing mechanism, which is the nail-passing mechanism as described above.

[0011] The nail gun provided by the present invention may also have the following technical features, wherein the striking mechanism has a firing pin component for pushing the nail and striking the nail along the striking direction. The firing pin component includes: a firing pin body having a main guide groove; and a plurality of tooth blocks arranged sequentially on one side of the firing pin body and protruding from the side of the firing pin body. A tooth groove recessed towards the firing pin body is provided between two adjacent tooth blocks; and a secondary guide groove that cooperates with the blocking protrusion is formed at the junction of the tooth block and the firing pin body.

[0012] The nail gun provided by the present invention may also have the following technical features, wherein the driving device further comprises: an energy storage mechanism for cooperating with the striking mechanism and providing power for the forward movement of the striking mechanism along the striking direction; and a transmission mechanism disposed on the drive motor of the nail gun for cooperating with the striking mechanism and providing power for the reverse movement of the striking mechanism along the striking direction; the transmission mechanism comprises: a transmission component for cooperating with the firing pin component and driving the firing pin component to move in the reverse direction along the striking direction; and a limiting component for cooperating with the transmission component to limit the movement of the firing pin component, wherein the transmission component is provided with a limiting portion cooperating with the limiting component.

[0013] The nail gun provided by the present invention may also have the following technical features, wherein the transmission component includes: a rotating part for being driven by a drive motor to rotate; and a mating part disposed on the rotating part for cooperating with the firing pin component and driving the firing pin component to move linearly along the striking direction, and having a plurality of toothed pins for being embedded in the tooth groove.

[0014] The nail gun provided by the present invention may also have the following technical features: among the plurality of toothed pins, there is at least one movable toothed pin; the rotating part is provided with a movable hole for the movable toothed pin to move; an elastic element is provided between the movable toothed pin and the rotating part; one end of the elastic element acts on the rotating part and the other end acts on the movable toothed pin; and a receiving cavity for installing the elastic element is provided in the rotating part.

[0015] The nail gun provided by the present invention may also have the following technical features, wherein the limiting part is a ratchet coaxially arranged with the rotating part, the outer circumference of the ratchet is provided with a plurality of ratchet teeth, and the limiting component is a pawl that cooperates with the ratchet teeth for embedding between adjacent ratchet teeth.

[0016] Invention Function and Effect

[0017] According to the nail-passing mechanism and nail gun of the present invention, when the nail is delivered by the magazine body, it is positioned exactly on the nail hole. Since a blocking flange protruding from the nail-passing channel surface is provided on the side of the nozzle component located in the nail hole, it forms a blockage on the side of the nail, so that when the nail is fired, it can only be delivered along the nail-shooting direction and will not deviate to the side, ensuring the accuracy of the nail firing and preventing the nail from deviating due to uneven force and getting stuck in the nail-passing channel. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the nail gun in an embodiment of the present invention.

[0019] Figure 2 This is a structural diagram of the nail gun after part of the housing has been removed in an embodiment of the present invention.

[0020] Figure 3This is one of the structural schematic diagrams of the firing pin component in an embodiment of the present invention.

[0021] Figure 4 This is the second structural schematic diagram of the firing pin component in an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the installation structure of the striking mechanism and the magazine mechanism in an embodiment of the present invention.

[0023] Figure 6 This is a cross-sectional view of the installation structure of the striking mechanism and the magazine mechanism in an embodiment of the present invention.

[0024] Figure 7 This is an exploded view of the installation structure of the striking mechanism and the magazine mechanism in an embodiment of the present invention.

[0025] Figure 8 This is a simplified structural diagram of the cover plate component in an embodiment of the present invention.

[0026] Figure 9 This is a simplified structural diagram of the nozzle component in an embodiment of the present invention.

[0027] Figure 10 This is a structural diagram of the driving device in an embodiment of the present invention.

[0028] Figure 11 This is a cross-sectional view of the driving device in an embodiment of the present invention.

[0029] Figure 12 This is an exploded view of the drive device in an embodiment of the present invention.

[0030] Figure 13 This is a schematic diagram of the cooperative structure of the transmission mechanism and the striking mechanism in an embodiment of the present invention.

[0031] Figure 14 This is one of the cross-sectional views of the cooperation structure between the transmission mechanism and the striking mechanism in the embodiments of the present invention.

[0032] Figure 15 This is the second cross-sectional view of the structure in which the transmission mechanism and the striking mechanism cooperate in an embodiment of the present invention.

[0033] Figure 16 yes Figure 10 A magnified view of part A.

[0034] Figure 17 yes Figure 11 A magnified view of section B.

[0035] Figure 18 yes Figure 11 A magnified view of a portion of point C.

[0036] Figure 19 yes Figure 11A magnified view of a portion of point D.

[0037] Figure 20 This is a structural diagram of the outer cylinder body in an embodiment of the present invention.

[0038] Figure 21 This is a structural cross-sectional view of the outer cylinder body in an embodiment of the present invention.

[0039] Figure 22 This is a structural diagram of the inner cylinder in an embodiment of the present invention.

[0040] Figure 23 yes Figure 11 A magnified view of a portion at point E.

[0041] Reference numerals: nail gun 10, receiving device 20, housing 21, nail storage device 30, magazine mechanism 31, magazine body 311, nail pusher block 312, nail passing mechanism 32, nozzle component 33, nail hole 331, blocking flange 332, mounting hole 333, cover plate component 34, clearance groove 341, guide strip 342, nail passing channel 35, drive device 40, striking mechanism 41, firing pin component 411, toothed block 4111, toothed groove 4112, first toothed groove 4112', main guide groove 4114, Piston assembly 412, Sealing ring 413, Energy storage mechanism 42, Transmission mechanism 43, Transmission component 431, Rotating part 4311, Toothed pin 4312, Movable toothed pin 4312', Mounting hole 43111, Movable hole 43112, Limiting component 432, Pawl 4321, Positioning end 4321a, Limiting end 4321b, Connecting section 4321c, Rotating shaft 4321d, Second spring 4322, Positioning screw 4323, Limiting part 433, Racket 4331, ... A spring 441, a top block 442, a limiting hole 4421, an energy storage component 45, an outer cylinder body 451, an outer cylinder body 4511, a rear cover 4512, a first seal 4513, an air inlet 4514, a pressure relief chamber 4515, a limiting surface 4516, a limiting boss 4517, an external through hole 4518, a mounting part 4519, a groove 4519a, a mounting slot 4519b, a hole 4519c, positioning holes 4519d and 4519e, an inner cylinder body 452, a first cavity 4521, and a third... The components include: a two-chamber body 4522, an inner through hole 4523, a convex ring 4524, an air chamber 453, an air inlet channel 4531, a pressure relief channel 4532, a buffer pad 454, a through hole 4541, a mounting convex ring 4542, a third seal 455, a positioning ring 456, an air hole 4561, an inflation component 46, a pressure relief component 47, a pressure relief valve body 471, a pressure relief valve core 472, a pressure relief spring 473, a pressure relief cavity 474, a limiting blocking surface 4741, a pressure relief hole 475, a control device 50, and an output shaft 51. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes the nail-passing mechanism and nail gun of the present invention in detail with reference to the embodiments and accompanying drawings.

[0043] <Example>

[0044] This embodiment provides a nail-passing mechanism and a nail gun, which can prevent the nail from deviating and getting stuck, thereby improving safety and nail-shooting effect.

[0045] Figure 1 This is a structural diagram of the nail gun in an embodiment of the present invention.

[0046] Figure 2 This is a structural diagram of the nail gun after part of the housing has been removed in an embodiment of the present invention.

[0047] The nail gun 10 in this embodiment includes a receiving device 20, a nail storage device 30, a driving device 40 for firing the nails, and a control device 50 for controlling the driving device. Figure 1 and Figure 2 As shown, the housing 20 includes a housing 21 disposed on the outer side, and a nail storage device 30 disposed at the front end of the housing 21. The nail storage device 30 has a magazine mechanism 31 for storing nails. The control device 50 includes components such as a battery, control board, wiring, switches, and motor (not fully shown in the figures), all mounted inside and on the surface of the housing 21. The housing 21 not only houses the internal components such as the drive device 40 and the control device 50, but also protects these internal components.

[0048] Figure 3 This is one of the structural schematic diagrams of the firing pin component in an embodiment of the present invention.

[0049] Figure 4 This is the second structural schematic diagram of the firing pin component in an embodiment of the present invention.

[0050] Figure 5 This is a schematic diagram of the installation structure of the striking mechanism and the magazine mechanism in an embodiment of the present invention.

[0051] like Figures 3-5 As shown, the drive unit 40 is disposed inside the housing 21 and acts on the nail to drive it out. The drive unit 40 includes a striking mechanism 41 that directly contacts the nail and is used to drive it out. The striking mechanism 41 has a firing pin member 411 and a piston member 412. The inner end of the firing pin member 411 is inserted into the piston member 412, and the outer end extends into the nail-passing mechanism 32. Figure 3As shown, the firing pin component 411 of this embodiment includes a firing pin body 4110. A plurality of tooth blocks 4111 are provided on one side of the firing pin body 4110. A main guide groove 4114 for guiding is provided in the middle of the firing pin body 4110. A secondary guide groove 4113 is provided at the connection between the inner side of the tooth block 4111 and the firing pin body 4110.

[0052] Figure 6 This is a cross-sectional view of the installation structure of the striking mechanism and the magazine mechanism in an embodiment of the present invention.

[0053] like Figure 5 and Figure 6 As shown, the striking mechanism 41 and the magazine mechanism 31 are mounted together via a nail-passing mechanism 32. In this embodiment, straight-row steel nails are used. The magazine mechanism 31 has a magazine body 311 for storing nails. Inside the magazine body 311, there is a nail-pushing block 312 for ejecting the nails. Several nails are arranged inside the magazine body 311, and the nail-pushing block 312 is located at the bottom of the nails. Specifically, a spring is provided between the bottom of the nail-pushing block 312 and the bottom of the magazine body 311. The spring force causes the nail-pushing block 312 to act on the nails and push the nails upward one by one.

[0054] Figure 7 This is an exploded view of the installation structure of the striking mechanism and the magazine mechanism in an embodiment of the present invention.

[0055] Figure 8 This is a simplified structural diagram of the cover plate component in an embodiment of the present invention.

[0056] The nail-passing mechanism 32 includes a nozzle component 33 and a cover plate component 34. The magazine body 311 is installed below the nozzle component 33. The nozzle component 33 has a nail hole 331 leading into the magazine body 311 and allowing the nail inside the magazine body 311 to be fed out. A nail pusher block 312 pushes the nail out into the nail hole 331, awaiting impact by the firing pin component 411. The cover plate component 34 covers the nozzle component 33, and a nail-passing channel 35 is provided between the cover plate component 34 and the nozzle component 33 for the movement of the front end of the firing pin component 411 and for the nail to pass through. Figure 6 and Figure 8 As shown, in order to allow the front end of the firing pin component 411 to move smoothly within the nail passage 35, the cover plate component 34 is provided with a clearance groove 341 for avoiding the tooth block 4111. The length of the clearance groove 341 is related to the number and length of the tooth blocks that the firing pin component 411 can pass through within the nail passage 35. A guide strip 342 is provided on one side of the cover plate component 34 near the clearance groove 341 to cooperate with the main guide groove 4114 of the firing pin component 411. The guide strip 342 is embedded in the main guide groove 4114, guiding the firing pin along the guide strip 342 and preventing it from deviating during movement.

[0057] Figure 9 This is a simplified structural diagram of the nozzle component in an embodiment of the present invention.

[0058] like Figure 7 and Figure 9 As shown, the nozzle component 33 has a protruding nail passage surface and a blocking flange 332 on one side of the nail hole 331. The blocking flange 332 and the clearance groove 341 are located on the same side to prevent the nail from deviating. At the same time, when the firing pin component 411 moves on the nail passage, the blocking flange 332 cooperates with the secondary guide groove 4113 of the firing pin component, which also guides the movement of the firing pin component 411 to a certain extent. The nozzle component 33 is located on the front side of the nail hole 331 and in the direction of nail ejection, and has a mounting hole 333 for installing a magnet. Adding a magnet can prevent the nail from falling out. Specifically, when the user is not driving nails and is simply holding the nail gun by hand, if the muzzle is pointing downwards, the nail located at nail hole 331 is likely to fall out. Since nails are mostly made of metal materials such as iron, in order to prevent the nail from falling out, a magnet is placed in the direction of the nail's movement to create an attractive force on the nail, thus making it less likely for the nail to fall out and making it safer.

[0059] like Figure 8 and Figure 9 As shown, mounting seats 334 and 343 are respectively provided on both sides of the nail passage 35 on the nozzle component 33 and the cover plate component 34. The mounting seats 334 and 343 are provided with threaded holes corresponding to each other. The nozzle component 33 and the cover plate component 34 are fixed together by screws.

[0060] Figure 10 This is a structural diagram of the driving device in an embodiment of the present invention.

[0061] Figure 11 This is a cross-sectional view of the driving device in an embodiment of the present invention.

[0062] Figure 12 This is an exploded view of the drive device in an embodiment of the present invention.

[0063] like Figures 10-12 As shown, the drive device 40 includes a striking mechanism 41 that directly contacts the nail and is used to drive the nail out, an energy storage mechanism 42 that provides power to the striking mechanism 41, and a transmission mechanism 43. The striking mechanism 41 has a striking direction for driving the nail out (the striking direction is the direction in which the nail is driven into the object). The energy storage mechanism 42 can drive the striking mechanism 41 to move forward along the striking direction to drive the nail out. The transmission mechanism 43 drives the striking mechanism 41 to move in the opposite direction along the striking direction, thereby triggering the energy storage mechanism 42 to store energy.

[0064] The striking mechanism 41 has a firing pin component 411 and a piston component 412. The inner end of the firing pin component 411 is inserted into the piston component 412. The piston component 412 is movably disposed inside the energy storage mechanism 42. The outer end of the firing pin component 411 extends out of the energy storage mechanism 42 and is inserted into the nail mechanism 32 to push the nail and fire it out along the striking direction.

[0065] The transmission mechanism 43 has a transmission component 431 and a limiting component 432. The transmission component 431 is used to cooperate with the firing pin component 411 and drive the firing pin component 411 to move in the opposite direction along the striking direction. The limiting component 432 is used to cooperate with the transmission component 431 to limit the movement of the firing pin component 411. The transmission component 431 is provided with a limiting part 433 that cooperates with the limiting component 432.

[0066] Figure 13 This is a schematic diagram of the cooperative structure of the transmission mechanism and the striking mechanism in an embodiment of the present invention.

[0067] Figure 14 This is one of the cross-sectional views of the cooperation structure between the transmission mechanism and the striking mechanism in the embodiments of the present invention.

[0068] Figure 15 This is the second cross-sectional view of the structure in which the transmission mechanism and the striking mechanism cooperate in an embodiment of the present invention.

[0069] like Figure 13 and Figure 14 As shown, a plurality of toothed blocks 4111 are provided on one side of the firing pin component 4111, and toothed grooves 4112 are formed between adjacent toothed blocks 4111. The transmission component 431 includes a rotating part 4311 and a mating part. The rotating part 4311 is an annular structure with an "I"-shaped cross-section and a mounting hole 43111 in the middle. Through the mounting hole 43111, the rotating part 4311 can be mounted onto the output shaft 51 of the control motor (not shown in the figure) of the nail gun, so that the rotating part 4311 rotates under the drive of the control motor. The mating part consists of a plurality of toothed pins 4312 arranged on the rotating part 4311. The toothed pins 4312 are embedded in the toothed grooves 4112 on the firing pin component 411 (e.g., ...). Figure 14 As shown), this allows for the engagement between the transmission component 431 and the striking pin component 411. When the rotating part 4311 rotates under the drive of the control motor, the toothed pin 4312 engages in the toothed groove 4112, thereby driving the striking pin component 411 to move laterally. Figure 13 As shown, when the toothed pin 4312 rotates counterclockwise following the rotating part 4311, it can drive the firing pin component 411 to move to the right (towards...). Figure 13 The arrow direction shown is the reference direction, and the arrow direction of the firing pin component is the opposite direction of the striking direction.

[0070] like Figure 14 and Figure 15 As shown, among the plurality of toothed pins 4312, there is at least one movable toothed pin 4312', and the rotating part 4311 is provided with an elongated movable hole 43112 for the movable toothed pin 4312' to move (e.g., Figure 12 As shown), an elastic component is provided between the movable toothed pin 4312' and the rotating part 4311. This elastic component includes: a first spring 441, one end of which acts on the rotating part 4311, and the other end of which acts on the movable toothed pin 4312'. A receiving cavity for mounting the first spring 441 is provided within the rotating part 4311. The elastic component also includes a top block 442 located between the first spring 441 and the movable toothed pin 4312'. The top block 442 has a limiting hole 4421 for inserting the first spring 441 or a limiting post for fitting the first spring 441 (in this embodiment). Figure 14 The middle part is the limiting hole 4421); the top block 442 has a working surface that contacts the movable toothed pin 4312' at one end facing the movable toothed pin 4312'.

[0071] Each toothed pin 4312 corresponds to a toothed groove 4112. In this embodiment, nine toothed pins 4312 are provided, with the movable toothed pin 4312' serving as the first toothed pin, used to embed into the first toothed groove 4112'. Making the first toothed pin movable ensures that the first toothed groove 4112' can be better embedded. For example, if the movable toothed pin 4312' happens to touch the toothed block 4111 during triggering, because the movable toothed pin 4312' is movable, the reaction force of the toothed block 4111 will push the movable toothed pin 4312' to make a slight movement within the movable hole 43112, and under the action of the first spring 441, embed it into the first toothed groove 4112' (e.g., ...). Figure 14 As shown), this ensures that the first toothed pin and the first toothed groove can properly engage, preventing jamming or other issues. When the toothed pin 4312 rotates continuously counter-clockwise following the rotating part 4311, each toothed pin gradually engages in its corresponding toothed groove, thereby causing the striking pin component 411 to gradually move to the right (as shown). Figure 15 (As shown). In the counterclockwise direction, the pins from the first pin to the nth pin are evenly distributed on the edge of the rotating part 4311, and there is a first gap of the same distance between two adjacent pins 4312; in the clockwise direction, a second gap is formed between the first pin and the nth pin, and the second gap is larger than the first gap. When the rotating part 4311 moves to the second gap facing the firing pin member 411, since there are no pins between the second gaps, the rotating part 4311 and the firing pin member 411 are in an empty tooth state. The firing pin member 411 in this state can be triggered by the energy storage mechanism to move along the striking direction, thereby firing the nail.

[0072] like Figure 13As shown, the limiting part 433 is a ratchet coaxially arranged with the rotating part 4311. Both the ratchet and the rotating part 4311 are sleeved on the output shaft 51 of the control motor of the nail gun, and are fixedly connected together by a pin. Under the drive of the control motor, the ratchet and the rotating part 4311 rotate synchronously. The outer circumference of the ratchet is provided with several ratchet teeth 4331, and the limiting part 432 has a pawl 4321 that cooperates with the ratchet teeth 4331 for engaging between adjacent ratchet teeth. Figure 13 As shown, the distance between adjacent ratchet teeth 4331 is smaller than the width of the tooth groove 4112, making the pawl and ratchet teeth engage more tightly and securely, and less prone to disengagement. Compared to the prior art where the pawl directly engages with the tooth groove 4112, the above-mentioned ratchet-tooth engagement method in this embodiment is much tighter and more secure because the distance between the ratchet teeth 4331 is much smaller than the width of the tooth groove 4112, reducing the likelihood of ratchet disengagement as in the prior art. In practice, the limiting part 433 can also be a ratchet directly integrally set on the rotating part 4311 (i.e., the rotating part 4311 is made thicker, and the ratchet is directly set on the outer periphery of the upper part of the rotating part 4311; this implementation is not shown in the figure). This method ensures that the limiting part 433 and the rotating part rotate synchronously and reduces the number of parts, but it places higher demands on the machining process of the rotating part.

[0073] like Figure 11 As shown, the energy storage mechanism 42 includes an energy storage component 45, an inflation component 46, and a pressure relief component 47. The energy storage component 45 has an outer cylinder 451 and an inner cylinder 452. The outer cylinder 451 includes an outer cylinder body 4511 and a rear cover 4512 covering the rear end of the outer cylinder body 4511. The rear cover 4512 is detachable. The inner side of the outer cylinder body 4511 is hollow to form an air chamber 453. The inner cylinder 452 is also installed inside the outer cylinder body 4511. The inner cylinder 452 has a long cylindrical annular structure. A striking mechanism 41 is installed inside the inner cylinder 452. The piston portion 412 of the striking mechanism 41 is tightly attached to the inner wall of the inner cylinder 452, and a sealing ring 413 is pressed between the piston portion 412 and the inner wall of the inner cylinder 452. A striking pin component 411 is fixed to the piston portion 412. The front end of the striking pin component 411 extends beyond the front end of the inner cylinder 452 and the outer cylinder body 4511 and cooperates with the transmission component 431. Figure 11As shown, the piston portion 412 and the sealing ring 413 divide the interior of the inner cylinder 452 into two separate parts: a first chamber 4521 and a second chamber 4522. The volumes of these two parts change as the piston portion 412 moves. The second chamber 4522 communicates with the air chamber 453, while the first chamber 4521 is separate from the second chamber 4522 and communicates with the outside. The front end of the inner cylinder 452 has an internal through hole 4523 connecting the first chamber 4521 to the outside. The rear cover 4512 is designed to be detachable, facilitating the disassembly of the outer cylinder to replace or repair the internal striking mechanism 41. To create a sealed space inside the air chamber, a first sealing element 4513 is provided at the connection between the rear cover 4512 and the outer cylinder body 4511. This enhances the tightness of the connection between the rear cover 4512 and the outer cylinder body 4511, preventing air leakage from the air chamber 453. In this embodiment, the first sealing element 4513 is a sealing ring (such as...). Figure 17 (As shown).

[0074] The air chamber 453 is filled with air or nitrogen. Since the striking mechanism 41 is installed inside the inner cylinder 452, when the firing pin component 411 is driven to move by the transmission component 431, the piston part 412 moves towards the second chamber 4522. The volume of the second chamber 4522 gradually decreases, thereby compressing the gas in the air chamber 453 and gradually increasing the air pressure inside the air chamber, thus accumulating energy. When the rotating part 4311 of the transmission component 431 rotates to the second gap facing the firing pin component 411 (i.e., when the firing pin component 411 is in a toothed state), under the air pressure in the air chamber 453, the striking mechanism 41 can be pushed out along the striking direction, thereby achieving nail driving.

[0075] Figure 17 yes Figure 11 A magnified view of section B.

[0076] To facilitate the replenishment of gas in the air chamber 453, an inflation component 46 is provided at one end of the outer cylinder body 4511 near the rear cover 4512. For example... Figure 11 and Figure 17 As shown, an air inlet 4514 is provided on the outer cylinder body 4511 near the rear cover 4512, and an air intake channel 4531 connecting the air chamber 453 and the air inlet 4514 is provided on the outer cylinder body 4511 on one side of the air inlet 4514. The inflation component 46 is an inflation nozzle with an inflation channel 461 in the middle. The inner end of the inflation nozzle is inserted into the air inlet 4514, and the outer end extends out of the outer cylinder body 4511 and is exposed on the outside, so that the user can inflate the inflation nozzle.

[0077] Figure 18 yes Figure 11 A magnified view of a portion of point C.

[0078] A pressure relief component 47 is provided on one side of the front end of the outer cylinder body 4511. In this embodiment, the pressure relief component 47 is an automatic pressure relief valve. When the air pressure in the air chamber 453 gradually increases and reaches a set critical value, the automatic pressure relief valve will automatically open to relieve pressure in the air chamber 453, so that the air pressure in the air chamber 453 is always kept within the critical value to ensure the safety of the outer cylinder body 4511. In addition, the outer end of the pressure relief component 47 is exposed on the outside of the outer cylinder body 4511. When the user needs to disassemble and inspect the outer cylinder body, the pressure relief valve can be opened manually first to release the gas inside the air chamber 453 before disassembly, avoiding accidental firing of the firing pin component and injuring the user due to excessive air pressure inside the air chamber, thus enhancing the safety of the product.

[0079] Specifically, such as Figure 18 As shown, a pressure relief chamber 4515 is provided on one side of the front end of the outer cylinder body 4511, and a pressure relief channel 4532 connecting the pressure relief chamber 4515 and the air chamber 453 is provided on the outer cylinder body 4511. The automatic pressure relief valve has a pressure relief valve body 471, a pressure relief valve core 472, and a pressure relief spring 473. One end of the pressure relief valve body 471 is fixedly installed in the pressure relief chamber 4515, and the other end extends out and is exposed on the outside of the outer cylinder body 4511. A pressure relief cavity 474 communicating with the pressure relief chamber 4514 is provided in the middle of the pressure relief valve body 471. A pressure relief hole 475 connecting the pressure relief cavity 474 and the outside is provided on the side of the pressure relief valve body 471. The pressure relief valve core 472 is movably disposed in the pressure relief cavity 474 by means of the pressure relief spring 473. The side wall of the pressure relief cavity 474 is formed with a limiting and blocking surface 4741 that cooperates with the pressure relief valve core 472. When the automatic pressure relief valve is closed, the pressure relief valve core 472, under the action of the pressure relief spring 473, blocks the connection between the pressure relief chamber 474 and the pressure relief chamber 4515. At this time, the pressure relief valve core 472 is tightly pressed against the limiting blocking surface 4741, and the gas in the air chamber 453 cannot be discharged. When the air pressure in the air chamber 453 gradually increases and exceeds the preset value, the gas will enter the pressure relief chamber 474 through the pressure relief channel 4532 and the pressure relief chamber 4515 and gradually push the pressure relief valve core 472. When the pressure relief valve core 472 is pushed away from the limiting blocking surface 4741 to form a gap, the gas can pass through the gap and be discharged from the pressure relief hole 475, thereby relieving the pressure inside the air chamber 453. When the air pressure in the air chamber 453 drops to the preset value, under the action of the pressure relief spring 473, the pressure relief valve core 472 will be pushed back to its original position, making it tightly pressed against the limiting blocking surface 4741. The automatic pressure relief valve does not require manual activation during operation and can automatically open according to changes inside the air chamber 453, thus protecting the air chamber 453.

[0080] Figure 19 yes Figure 11 A magnified view of a portion of point D.

[0081] like Figure 11As shown, the front end of the inner cylinder 452 is fixedly connected to the front end of the outer cylinder 451, and a buffer pad 454 is provided at the connection. The buffer pad 454 has a through hole 4541 in the middle for the front end of the striking pin component to extend out. The inner end face of the buffer pad 454 is used to buffer the piston part 412. The piston part 412 is pushed forward by the air pressure in the air chamber 453 (in the direction of impact). The piston part 412 can move until it is blocked by the buffer pad 454. The buffer pad 454 can block and buffer the piston part 412, preventing it from directly impacting the inner side of the outer cylinder body and protecting the piston part 412.

[0082] like Figure 18 and Figure 19 As shown, the specific installation structure of the buffer pad 454 is as follows: the inner cylinder 452 is a sleeve structure with a circular cross-section; the outer periphery of the buffer pad 454 is formed with an installation protrusion 4542; the inner side of the front end of the outer cylinder body 4511 forms a limiting surface 4516 and a limiting boss 4517; the front end of the buffer pad 454 abuts against the limiting surface 4516 (e.g., ...). Figure 11 As shown), the front end face of the inner cylinder 452 abuts against the mounting protrusion 4542 and the limiting protrusion 4517, thereby achieving the connection between the buffer pad 454, the inner cylinder 452, and the outer cylinder body 4511. Figure 19 As shown, a third sealing element 455 is provided between the outer periphery of the inner cylinder body 452 and the inner wall of the outer cylinder body 4511. The third sealing element 455 consists of two sealing rings. An outer through hole 4518 is provided at the front end of the outer cylinder body 4511 outside the inner through hole 4523. The inner through hole 4523 and the outer through hole 4518 are connected, thereby connecting the first cavity 4521 to the outside. In the transverse cross-section, the inner through hole 4523 and the outer through hole 4518 are located in front of the third sealing element, and the air cavity 453 is located behind the third sealing element. The third sealing element 455 not only strengthens the connection tightness but also separates the air cavity 453 from the first cavity 4521, forming two independent spaces and preventing the air cavity 453 from being affected by external air pressure due to its connection with the outside.

[0083] Figure 16 yes Figure 10 A magnified view of part A.

[0084] Figure 20 This is a structural diagram of the outer cylinder body in an embodiment of the present invention.

[0085] Figure 21 This is a structural cross-sectional view of the outer cylinder body in an embodiment of the present invention.

[0086] like Figure 20As shown, the front end of the outer cylinder body 4511 is provided with a mounting portion 4519. The mounting portion 4519 is formed with a groove 4519a for mounting the transmission component. The groove 4519a has a shape adapted to the rotating part of the transmission component, namely, an annular shape. The mounting portion 4519 is provided with a mounting groove 4519b on one side of the groove 4519a. The pawl 4321 of the limiting component 432 is installed in the mounting groove 4519b. The side of the groove 4519a facing the mounting groove 4519b has a hole 4519c for one end of the pawl 4321 to pass through.

[0087] like Figure 16 As shown, the pawl 4321 has a positioning end 4321a, a limiting end 4321b, and a connecting section 4321c. The positioning end 4321a is rotatably mounted in the mounting groove 4519b via a rotating shaft 4321d. The limiting end 4321b extends into the groove 4519a through a hole 4519c on the side wall of the groove 4519a and engages with the ratchet teeth 4331 on the ratchet wheel located in the groove 4519a. The connecting section 4321c connects the positioning end 4321a and the limiting end 4321b. A second spring 4322 is provided on one side of the connecting section 4321c. A positioning screw 4323 is inserted into the mounting part 4519 to provide support for one end of the second spring 4322. The two ends of the second spring 4322 abut against the positioning screw 4323 and the connecting section 4321c, respectively. Under the action of the second spring 4322, the limiting end 4321b of the pawl 4321 can better cooperate with the ratchet 4331, so that the limiting end 4321b is embedded in the ratchet 4331, preventing the ratchet from rotating in the opposite direction. At the same time, if Figure 20 As shown, the mounting part 4519 has positioning holes 4519d and 4519e corresponding to the rotating shaft 4321d and positioning screw 4323, respectively, for mounting the rotating shaft 4321d and positioning screw 4323. The engagement of the ratchet 4331 and the pawl 4321 can prevent the ratchet from rotating in the opposite direction. Since the ratchet and the rotating part are coaxially arranged, the rotating part can be prevented from rotating in the opposite direction, thereby preventing the firing pin component from being accidentally fired, and providing stronger safety.

[0088] Figure 22 This is a structural diagram of the inner cylinder in an embodiment of the present invention.

[0089] Figure 23 yes Figure 11 A magnified view of a portion at point E.

[0090] like Figure 11 As shown, the inner cylinder body 452 is installed inside the outer cylinder body 4511. The front end of the inner cylinder body 452 is connected to and locked to the inner wall of the outer cylinder body 4511 via a third seal 455. To ensure the inner cylinder body 452 is more stably positioned inside the outer cylinder body 4511, as shown... Figure 22 As shown, a convex ring 4524 is provided at the end of the inner cylinder 452 away from the third seal 455. A circular positioning ring 456 is provided on one side of the convex ring 4524, and an air hole 4561 for gas to pass through is provided on the positioning ring 456. Figure 23 As shown, the inner circumference of the positioning ring 456 is fitted around the outer circumference of the inner cylinder body 452, and one side is abutted by the convex ring 4524. The outer circumference of the positioning ring 456 is blocked by the end face of the rear cover 4512 facing the outer cylinder body 4511, thereby limiting the positioning ring 456 between the rear cover 4512 and the convex ring 4524, enhancing the connection stability between the structures. The third seal 455 and the positioning ring 456 are located at the front and rear ends of the inner cylinder body 452, respectively, providing support for both ends of the inner cylinder body 452, allowing the inner cylinder body 452 to be more stably fixed inside the outer cylinder body 4511.

[0091] The working principle of this embodiment:

[0092] The control motor in the control device 50 of the nail gun is turned on, driving the transmission component 431 to rotate. During the rotation, the rotating part 4311 gradually engages with the toothed groove 4112 on the firing pin component 411, starting from the first toothed pin (movable toothed pin 4312'). This causes the firing pin component 411 and the piston component 412 to move in the opposite direction of the striking direction inside the inner cylinder 452. During the movement of the piston component 412, the volume of the second chamber 4522 gradually decreases, thereby compressing the gas in the air chamber 453. The air pressure in the air chamber 453 gradually increases to store energy. When the rotating part 4311 continues to rotate until a toothed state is formed between it and the firing pin component 411, the air pressure in the air chamber 452 pushes the piston component 412 and the firing pin component 411 out along the striking direction, thereby allowing the firing pin component 411 to fire the nail and complete the nailing operation.

[0093] During the rotation of the rotating part 4311, the ratchet also rotates along with the rotating part 4311. The pawl 4321 and the ratchet teeth 4331 on the outer periphery of the ratchet cooperate with each other to prevent the ratchet from reversing, thereby effectively avoiding the accidental firing of the striking pin component during operation and enhancing safety.

[0094] Functions and effects of the embodiments

[0095] According to the nail-passing mechanism 32 of this embodiment, when the nail is delivered by the magazine body 31, it is positioned exactly on the nail hole 331. Since the nozzle member 33 has a blocking flange 332 protruding from the surface of the nail-passing channel 35 on one side of the nail hole 331, it can block the side of the nail, so that when the nail is fired, it can only be delivered along the nail-shooting direction and will not deviate to the side, ensuring the accuracy of the nail firing and preventing the nail from deviating due to uneven force and getting stuck in the nail-passing channel.

[0096] In this embodiment, the nozzle component 33 is located in front of the nail hole 331 and has a mounting hole 333 for installing a magnet in the direction in which the nail is fired. Adding a magnet can prevent the nail from falling out. When the user is not driving nails and is simply holding the nail gun by hand, if the muzzle is pointing downwards, the nail located in the nail hole 331 is prone to falling out. Since nails are mostly made of metal materials such as iron, a magnet is placed in the direction of the nail's movement to prevent it from falling out, thus enhancing safety.

[0097] Because a limiting part that cooperates with the limiting part 432 used to limit the movement of the firing pin component 411 is directly provided on the transmission component 431, there is no need to provide a separate structure on the firing pin component 411 that cooperates with the limiting part 432, which simplifies the structure of the firing pin component 411. Furthermore, since there is no direct contact between the limiting part 432 and the firing pin component 411, there is no need to release the limiting relationship between the limiting parts 432 when the firing pin component 411 is fired. That is, there is no need to provide a solenoid valve or other driving device that is specially set at the limiting part 432 to drive the rotation of the limiting part 432, which simplifies the structure, reduces costs, and also solves the defects caused by the failure of the solenoid valve, making the entire nail gun more efficient, stable and safe when working.

[0098] In this embodiment, the transmission component 431 includes a rotating part 4311 and a mating part. The rotating part is connected to the drive motor of the nail gun and is driven to rotate by the drive motor. The mating part consists of several toothed pins 4312 distributed on the rotating part. The toothed pins 4312 engage with the toothed grooves 4112 of the firing pin component 411, thereby realizing the engagement between the transmission component 431 and the firing pin component 411 and driving the firing pin component 411 to move. Compared with the engagement of gears and racks, the engagement of the toothed pins 4312 and the toothed grooves 4112 is easier to mesh, thus making the transmission more stable.

[0099] In this embodiment, the limiting part 433 is a ratchet coaxially arranged with the rotating part, and has a plurality of ratchet teeth 4331 on its outer periphery. The limiting component 432 is a pawl 4321 that cooperates with the ratchet teeth 4331 and is used to embed between adjacent ratchet teeth 4331. The ratchet is set to be coaxial with the rotating part 4311, so that the rotating part 4311 and the ratchet can rotate synchronously. The pawl 4321 cooperates with the ratchet to restrict the rotating part 4311 from rotating in the opposite direction, thereby restricting the movement of the striking pin component 411, improving safety. Moreover, the ratchet and the rotating part 4311 are directly driven by the same drive motor, eliminating the need for a separate power source, simplifying the structure, reducing costs, reducing weight, and making it convenient to carry and use.

[0100] In this embodiment, the spacing between the ratchet teeth 4331 on the ratchet is smaller than the width of the tooth groove 4112 on the impact pin component 411. Compared with the direct engagement of the pawl 4321 with the tooth groove 4112, the connection is more stable. The smaller the spacing, the tighter and more accurate the engagement of the pawl 4321, which greatly reduces or even eliminates the possibility of the pawl 4321 disengaging, thereby reducing the probability of the impact pin component 411 being accidentally fired and improving safety performance.

[0101] In this embodiment, at least one of the toothed pins 4312 is a movable toothed pin 4312'. When the transmission component 431 and the firing pin component 411 cooperate with each other, the toothed pins 4312 need to be inserted into the toothed grooves 4112 one by one. In actual use, it is easy for the toothed pins 4312 and the toothed grooves 4112 to not be fully aligned, resulting in the toothed pins 4312 directly colliding with the toothed block 4111, failing to mesh properly and getting stuck. By setting the toothed pins 4312 to be movable, when the movable toothed pins 4312' collide with the toothed block 4111, the movable toothed pins 4312' will move slightly under the impact force and accurately insert into the toothed grooves 4112, avoiding the transmission component 431 and the firing pin component 411 from getting stuck. This avoids personal injury caused by the accidental firing of the nail due to the two getting stuck, and further enhances safety.

[0102] The energy storage mechanism of this embodiment includes two cylinders, an inner cylinder and an outer cylinder, with an air chamber between them. The inner cylinder 452 is located inside the outer cylinder body 4511 of the outer cylinder 451. A striking mechanism 41 is installed inside the inner cylinder 452. The striking mechanism 41 is driven by a transmission mechanism 43 to change the air pressure in the air chamber to drive the nail. A detachable rear cover 4512 is provided on the rear side of the outer cylinder body 4511 to facilitate disassembly for maintenance or replacement of the striking mechanism 41 located inside the inner cylinder 452.

[0103] In this embodiment, the energy storage mechanism 42 is equipped with a pressure relief component 47 leading to the air chamber 453. When the air pressure in the air chamber 453 increases and exceeds a preset safety threshold, the pressure relief component 47 will automatically open to relieve pressure in the air chamber 453, ensuring that the air pressure in the air chamber remains within the safety threshold and guaranteeing the safety performance of the equipment. At the same time, the energy storage mechanism 42 is also equipped with an inflation component 46 leading to the air chamber 453, which can inflate the air chamber 453 when needed, which is very convenient.

[0104] In this embodiment, the outer cylinder 451 of the energy storage mechanism is integrally formed with an installation part 4519. The installation part 4519 is used to install the transmission component 431. The installation part 4519 is made into a universal part. When different gun needles are required, only the appropriate firing pin component 411 and transmission component 431 need to be replaced, without replacing the entire device, which has wide applicability. When users need to carry out construction in various situations, they do not need to carry various nail guns with different types of nails. They only need to carry the appropriate firing pin component and transmission component, which is very convenient to carry.

[0105] The above embodiments are only used to illustrate the specific implementation of this embodiment, and the present invention is not limited to the scope of the description of the above embodiments.

Claims

1. A nail-passing mechanism, disposed on a nail gun, wherein a striking mechanism within the driving device of the nail gun cooperates with a magazine mechanism of a nail storage device to strike out a nail, characterized in that, include: The muzzle component is used to mount the magazine body of the magazine mechanism, and has a nail hole for feeding a nail into the magazine body and allowing the nail located inside the magazine body to exit. A cover plate component, which is disposed above the nozzle component. The nozzle component and the cover plate component are provided with a nail passage for the movement of the firing pin component of the striking mechanism and for the passage of the nail. The cover plate component is provided with a clearance groove for avoiding the toothed block of the firing pin component. The nozzle component is provided with a blocking flange protruding from the surface of the nail passage on one side of the nail hole. The blocking flange is located on the same side as the clearance groove and is used to prevent the nail from deviating.

2. The nail-passing mechanism according to claim 1, characterized in that, in, The cover plate component is provided with a guide strip on one side of the clearance groove for cooperating with the main guide groove of the firing pin component.

3. The nail-passing mechanism according to claim 1, characterized in that, in, The nozzle component is provided with a mounting hole for installing a magnet on the front side of the nail hole.

4. The nail-passing mechanism according to any one of claims 1-3, characterized in that, in, The nozzle component and the cover plate component are fixedly installed with screws.

5. A nail gun, characterized in that, At least including: A nail storage device, having a clip mechanism for storing nails. The drive unit has a striking mechanism for pushing the nail and firing it in the striking direction. The magazine mechanism and the striking mechanism are mounted together via a nail-passing mechanism, wherein the nail-passing mechanism is the nail-passing mechanism described in any one of claims 1-4.

6. The nail gun according to claim 5, characterized in that, in, The striking mechanism has a firing pin member for pushing the nail and striking the nail along the striking direction, the firing pin member comprising: The firing pin body has a main guide groove; and The tooth blocks are arranged sequentially on one side of the firing pin body and protrude from the side of the firing pin body. A tooth groove is provided between two adjacent tooth blocks and is recessed toward the firing pin body. The toothed block is recessed at the connection point with the main body of the firing pin, forming a secondary guide groove that mates with the blocking protrusion.

7. The nail gun according to claim 6, Its features are, in, The drive device also has: An energy storage mechanism is used to cooperate with the striking mechanism and provide power for the forward movement of the striking mechanism along the striking direction; as well as A transmission mechanism, mounted on the drive motor of the nail gun, is used to cooperate with the striking mechanism and provide power for the striking mechanism to move in the opposite direction of the striking direction; The transmission mechanism has: A transmission component is used to cooperate with the firing pin component and drive the firing pin component to move in the opposite direction along the striking direction. A limiting component, used to cooperate with the transmission component to limit the movement of the firing pin component. The transmission component is provided with a limiting part that cooperates with the limiting component.

8. The nail gun according to claim 7, Its features are, in, The transmission component includes: The rotating part is used to be driven to rotate by the drive motor; The mating part is disposed on the rotating part and is used to cooperate with the firing pin component and drive the firing pin component to move linearly along the striking direction, and has a plurality of toothed pins for embedding in the toothed groove.

9. The nail gun according to claim 8, characterized in that, in, Among the plurality of toothed pins, at least one is a movable toothed pin, and the rotating part has a movable hole for the movable toothed pin to move. An elastic element is provided between the movable toothed pin and the rotating part. One end of the elastic element acts on the rotating part, and the other end acts on the movable toothed pin. The rotating part has a receiving cavity for installing the elastic element.

10. The nail gun according to claim 8, characterized in that, in, The limiting part is a ratchet coaxially arranged with the rotating part. The ratchet has a plurality of ratchet teeth on its outer circumference. The limiting component is a pawl that cooperates with the ratchet teeth and is used to fit between adjacent ratchet teeth.

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