A nail gun

Abstract

The present invention relates to a nail gun, belonging to the technical field of nail guns, and includes a sleeve, a nail tube, and an adjustment device for adjusting the nail driving depth of the nail gun. The nail tube is axially slidably disposed within the sleeve; the adjustment device includes a rotatably arranged positioning member, and the positioning member is used to define the retraction length of the nail tube during nail driving; one end of the positioning member has a plurality of limiting surfaces that abut at least a part of the nail tube, and the distances between the plurality of limiting surfaces and the front end surface of the nail tube are all unequal. The beneficial effects of the present invention are as follows: When dealing with substrates of different materials, the positioning member can be rotated to make the nail tube abut against a suitable limiting surface, thereby adjusting the nail driving depth of the nail gun. The operation is convenient and fast. It can be used for nail driving on various substrates of different materials, effectively avoiding the situations of piercing through the substrate and insufficient nail driving depth, and improving the nail driving quality.

Description

Technical Field

[0001] The present invention relates to the technical field of nail guns, and particularly to a nail gun. Background Art

[0002] A nail gun is a commonly used tool and an essential manual tool for carpentry, construction, etc. The nail gun fires and nails, directly driving them into substrates such as steel, concrete, brick masonry or rock, thereby firmly connecting the components to be fixed (such as doors and windows, insulation boards, sound insulation layers, ornaments, pipes, steel parts, wood products, etc.) and the substrate together.

[0003] When the nail gun is in use, the longer the nail tube extends, the shallower the nail driving depth, and the shorter the nail tube extends, the deeper the nail driving depth. When driving nails into a softer substrate, if the nail tube extends too short, it may penetrate the substrate. When driving nails into a harder substrate, if the nail tube extends too long, the nail cannot be driven in. Therefore, when driving nails into substrates of different hardnesses, it is necessary to adjust the extension length of the nail tube to adjust the different nail driving depths. The existing adjustment structure of the nail gun is complex and the operation is troublesome. Summary of the Invention

[0004] The purpose of the present invention is to provide a nail gun to solve the technical problem of inconvenient adjustment of nail driving depth.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A nail gun includes a tube sleeve, a nail tube, and an adjustment device for adjusting the nail driving depth of the nail gun. The nail tube is axially slidably arranged in the tube sleeve; the adjustment device includes a rotatably arranged positioning member for defining the retraction length of the nail tube when driving nails; one end of the positioning member has a plurality of limiting surfaces that abut at least a part of the nail tube, and the distances between the plurality of limiting surfaces and the front end surface of the nail tube are all unequal.

[0007] Further, there are two or three or four limiting surfaces, and adjacent limiting surfaces are smoothly transitioned by inclined surfaces or arc surfaces.

[0008] Further, a convex block is fixedly arranged on the outer circle of the nail tube, and one of the limiting surfaces of the positioning member abuts against the convex block.

[0009] Further, the adjustment device further includes an adjustment rod and an adjustment head for driving the adjustment rod to rotate. The adjustment head and the positioning member are both coaxially rotatably connected to the adjustment rod; the tube sleeve is provided with at least two coupling seats, and the adjustment rod is rotatably arranged in the two coupling seats.

[0010] Further, the adjusting rod includes a first rod with a polygonal cross-section and a second rod with a circular cross-section. The positioning member is sleeved on the first rod, and a hole adapted to the first rod is formed in the positioning member. The second rod is connected with a shifting device for restricting the circumferential rotation of the adjusting rod.

[0011] Further, the shifting device includes an elastic snap ring and at least one sphere installed in one of the coupling seats. A plurality of positioning grooves matching the spheres are formed in the outer circumference of the second rod, and the plurality of positioning grooves are arranged in one-to-one correspondence with the plurality of limiting surfaces; the elastic snap ring is used to press at least a part of the sphere into the positioning groove. When a rotational external force is applied to the adjusting rod, the sphere overcomes the resilience of the elastic snap ring and disengages from the positioning groove.

[0012] Further, the positioning member is connected with a reset mechanism, and the reset mechanism is used to drive the nail tube to reset to the standby state. When the nail gun is in the standby state, the protruding length of the nail tube is the maximum.

[0013] Further, a convex block is fixedly arranged on the outer circumference of the nail tube, and the nail tube is detachably connected with a first limiting member corresponding to the convex block. The first limiting member is used to restrict the axial movement of the nail tube; a first groove is formed in the outer circumference of the sleeve, and at least a part of the first limiting member is clamped in the first groove. The first groove is used to restrict the axial movement of the first limiting member along the sleeve; at least a part of the first limiting member is connected with a second limiting member, and the second limiting member is used to restrict the radial movement of the first limiting member along the sleeve.

[0014] Further, one end of the adjusting head abuts against the first limiting member to restrict the axial movement of the first limiting member along the nail tube; the outer circumference of the adjusting head abuts against the first limiting member to restrict the radial movement of the first limiting member along the nail tube; the adjusting head is provided with a groove for avoiding the convex block.

[0015] Further, the nail gun further includes a dust cover; a cavity for accommodating at least a part of the sleeve is arranged in the dust cover. One end of the dust cover facing the nail driving direction of the nail gun has a first opening for passing through the sleeve and a second opening communicating with the first opening. The sleeve closes the first opening, the adjusting head is exposed from the second opening, and the adjusting head closes the second opening.

[0016] Compared with the prior art, in the nail gun provided by the present invention, the retraction length of the nail tube is limited by the positioning member. When the nail gun drives a nail, the nail tube will be compressed until the nail tube abuts against the positioning member. The smaller the distance between the limiting surface and the front end surface of the nail tube, the shorter the length of the nail tube extending out, and the deeper the driving depth of the nail. On the contrary, the larger the distance between the limiting surface and the front end surface of the nail tube, the longer the length of the nail tube extending out, and the shallower the driving depth of the nail. When dealing with substrates of different materials, the positioning member can be rotated to make the nail tube abut against the appropriate limiting surface, thereby adjusting the driving depth of the nail gun. Without disassembling and replacing the nail tube, the adjustment of the driving depth can be realized, and the operation is convenient and fast. It can be used for driving nails on various substrates of different materials, effectively avoiding the situations of piercing through the substrate and insufficient driving depth of the nail, and improving the driving quality of the nail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. The drawings are included to provide a further understanding of the present invention and are included in this specification and form a part of this specification.

[0018] Figure 1 is a schematic structural diagram of a nail gun according to an embodiment of the present invention;

[0019] Figure 2 is a schematic structural diagram of the connection structure between the nail tube and the tube sleeve;

[0020] Figure 3 is an exploded view of a connection structure between the nail tube and the tube sleeve;

[0021] Figure 4 is a schematic structural diagram of the nail tube in a compressed state;

[0022] Figure 5 is a schematic structural diagram of the nail tube in a popped-up state;

[0023] Figure 6 is a schematic structural diagram of the positioning member;

[0024] Figure 7 is a schematic structural diagram of the adjustment rod;

[0025] Figure 8 is a schematic structural diagram of the tube sleeve;

[0026] Figure 9 is a schematic structural diagram of the first limiting member;

[0027] Figure 10 is a schematic structural diagram of the dust cover;

[0028] Figure 11 is another schematic structural diagram of the dust cover;

[0029] In the figure: 1 - sleeve, 2 - nail tube, 3 - positioning member, 4 - limiting surface, 5 - bump,

[0030] 6 - adjusting rod, 7 - adjusting head, 8 - coupling seat, 9 - first rod, 10 - second rod, 11 - elastic snap ring, 12 - sphere, 13 - positioning groove, 14 - slider,

[0031] 15 - first limiting member, 16 - second limiting member, 17 - first groove, 18 - first part, 19 - second part, 20 - third part, 21 - third groove, 22 - fourth groove,

[0032] 23 - dust cover, 24 - first opening, 25 - second opening, 26 - third opening, 27 - base, 28 - fourth opening, 29 - ear part. Specific embodiments

[0033] The present invention will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention are shown in the drawings.

[0034] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0035] As Figures 1 - 11 shown, a nail gun includes a sleeve 1, a nail tube 2, and an adjusting device for adjusting the nail driving depth of the nail gun. The nail tube 2 is axially slidably disposed within the sleeve 1; the adjusting device includes a rotatably disposed positioning member 3, and the positioning member 3 is used to limit the retraction length of the nail tube 2 when driving a nail; as Figure 6 shown, one end of the positioning member 3 has a plurality of limiting surfaces 4 that abut at least a part of the nail tube 2, and the distances between the plurality of limiting surfaces 4 and the front end face of the nail tube 2 are all unequal. Here, the front end face of the nail tube 2 refers to the end face in contact with the substrate.

[0036] Compared with the prior art, in the nail gun provided by the present invention, the retraction length of the nail tube 2 is limited by the positioning member 3. When the nail gun drives a nail, the nail tube 2 will be compressed until the nail tube 2 abuts against the positioning member 3. The smaller the distance between the limiting surface 4 and the front end surface of the nail tube 2, the shorter the length of the nail tube 2 extending out, and the deeper the driving depth of the nail. On the contrary, the larger the distance between the limiting surface 4 and the front end surface of the nail tube 2, the longer the length of the nail tube 2 extending out, and the shallower the driving depth of the nail. When dealing with substrates of different materials, the positioning member 3 can be rotated so that the nail tube 2 abuts against the appropriate limiting surface 4, thereby adjusting the driving depth of the nail gun. Without disassembling and replacing the nail tube 2, the adjustment of the driving depth can be achieved, which is convenient and fast to operate. It can be used for driving nails on substrates of various different materials, effectively avoiding the situations of piercing through the substrate and insufficient driving depth of the nail, and improving the driving quality of the nail.

[0037] For example, as Figure 4 shown, in the nail driving state, the nail tube 2 is in a compressed state, and the boss of the nail tube 2 abuts against the limiting surface 4 with a larger abutting distance. At this time, the driving depth of the nail is deep; as Figure 5 shown, it is the state where the nail tube 2 is in the popped state.

[0038] In some embodiments, there are multiple limiting surfaces 4. Exemplarily, there are two or three or four. The distances between the multiple limiting surfaces 4 and the front end surface of the nail tube 2 increase in sequence in the clockwise or counterclockwise direction. The adjacent limiting surfaces 4 are smoothly transitioned through an inclined surface or an arc surface, which is convenient for the convex block 5 to smoothly slide into another limiting surface 4 and reduces the external force required to rotate the adjusting rod 6.

[0039] In some embodiments, a convex block 5 is fixedly provided on the outer circle of the nail tube 2. One of the limiting surfaces 4 of the positioning member 3 abuts against the convex block 5. The convex block 5 is located between the front end surface of the nail tube 2 and the positioning member 3. When driving a nail, the nail tube 2 will be compressed and the nail tube 2 will retract until the convex block 5 abuts tightly against one of the limiting surfaces 4 of the positioning member 3. The convex block 5 extends outward from the outer circle of the nail tube 2, and the lower part of the positioning member 3 abuts against the convex block 5.

[0040] In some embodiments, the adjusting device further includes an adjusting rod 6 and an adjusting head 7 for driving the adjusting rod 6 to rotate. Both the adjusting head 7 and the positioning member 3 are coaxially rotatably connected to the adjusting rod 6; the tube sleeve 1 is provided with at least two coupling seats 8, and the adjusting rod 6 is rotatably arranged on the two coupling seats 8, and the coupling seats 8 play a supporting role. By holding and rotating the adjusting head 7, the positioning member 3 can be driven to rotate through the adjusting rod 6, thereby adjusting the driving depth of the nail.

[0041] Specifically, the outer circle of the adjusting head 7 has anti-slip lines, which is convenient for holding and rotating. The adjusting head 7 and the adjusting rod 6 are of an integral structure or are welded and connected.

[0042] In a further aspect, as Figure 7As shown, the adjustment rod 6 includes a first rod 9 with a polygonal cross-section and a second rod 10 with a circular cross-section. By way of example, the polygon can be a square or a hexagon, or can be a cross-section formed after a circle is provided with at least one chord, which is easier to process. The positioning member 3 is sleeved on the first rod 9, and a hole adapted to the first rod 9 is opened in the positioning member 3. The second rod 10 is connected to a gear shifting device for limiting the circumferential rotation of the adjustment rod 6.

[0043] The above-mentioned gear adjusting device is used to provide a resistance when rotating to one of the limit surfaces 4, reminding the operator that the gear has been adjusted to the right position, which is easier to operate. If the gear adjusting device is not set, it will make it difficult for the operator to determine the rotation angle.

[0044] In a further embodiment, the gear shifting device includes an elastic snap ring 11 and at least one sphere 12 installed in one of the coupling seats 8. The outer circle of the second rod 10 is provided with a plurality of positioning grooves 13 matching the sphere 12. The plurality of positioning grooves 13 are arranged in a one-to-one correspondence with the plurality of limiting surfaces 4. The positioning groove 13 can be a strip groove, and the long side of the strip groove is parallel to the axis of the nail tube 2; the elastic snap ring 11 is used to press at least a portion of the sphere 12 into the positioning groove 13 through its rebound force. When a rotational external force is applied to the adjusting rod 6, the sphere 12 overcomes the rebound force of the elastic snap ring 11 and disengages from the positioning groove 13. When the sphere 12 is used to rotate the adjustment head 7, the sphere 12 can move outward to squeeze the elastic snap ring 11, thereby causing the adjusting rod 6 to rotate synchronously until it rotates to the next positioning groove 13. The sphere 12 enters the next positioning groove 13 under the action of the rebound force of the elastic snap ring 11, generating a certain resistance, reminding the operator that the gear has been shifted into place.

[0045] It is understandable that the cross section of the elastic clamping ring 11 can be an arc with an opening, and it can be made of plastic material or a thin elastic metal material, and can be installed on the coupling seat 8 through its resilience.

[0046] In one embodiment, the positioning member 3 is connected to a reset mechanism, and the reset mechanism is used to drive the nail tube 2 to reset to the standby state. When the nail shooter is in the standby state, the extended length of the nail tube 2 is the maximum. The reset mechanism may include a slider 14 and a reset spring. Along the axial direction of the nail tube 2, the slider 14 moves synchronously with the positioning member 3. For example, a circumferentially extending annular groove is provided on the outer circle of the positioning member 3, and the slider 14 is clamped in the annular groove; the reset spring is fixed between the slider 14, the base 27 or the sleeve 1, so that when the nail shooter is in the standby state, the nail tube 2 is in the extended state. When nailing, the nail tube 2 is compressed, and the reset spring is compressed. When nailing is completed, the nail tube 2 is extended under the action of the reset spring. It can be understood that the reset spring can be a compression spring, and the reset spring and the slider 14 can be connected by a paddle or directly fixed.

[0047] The nail gun disclosed in the present invention is also provided with a nail tube installation device for quickly disassembling and assembling the nail tube 2.

[0048] The above nail tube installation device includes a tube sleeve 1 and a nail tube 2. The nail tube 2 is axially slidably arranged in the tube sleeve 1. A convex block 5 is fixedly arranged on the outer circle of the nail tube 2. The nail tube 2 is detachably connected with a first limiting member 15 corresponding to the convex block 5. The first limiting member 15 is used to limit the axial movement of the nail tube 2. A first groove 17 is formed on the outer circle of the tube sleeve 1. At least a part of the first limiting member 15 is clamped in the first groove 17. The first groove 17 is used to limit the axial movement of the first limiting member 15 along the nail tube 2. At least a part of the first limiting member 15 is connected with a second limiting member 16. The second limiting member 16 is used to limit the radial movement of the first limiting member 15 along the nail tube 2.

[0049] The nail tube installation device of the prior art has the defects of unreliable fixation and inconvenient disassembly and assembly. The nail tube installation device disclosed in the present invention uses the first limiting member 15 for limiting. In the axial direction of the nail tube 2, the first limiting member 15 transfers the axial force to the tube sleeve 1 by matching with the first groove 17. Compared with transferring the axial force to other components, the structure is more stable and reliable. In the radial direction of the nail tube 2, an independent second limiting member 16 is used for limiting, further improving the structural stability and effectively avoiding micro deformations such as radial runout. When disassembling the nail tube 2, only the first limiting member 15 and the second limiting member 16 need to be disassembled to complete the operation, which is convenient and has higher efficiency.

[0050] In some embodiments, at least a part of the side surface of the first groove 17 is a cylindrical surface. The axis of the cylindrical surface is perpendicular to the axis of the tube sleeve 1. At least a part of the first limiting member 15 matches the first groove 17. In the axial direction of the nail tube 2, the first limiting member 15 is limited by the cylindrical surface structure. Compared with the structure with end face contact, the structure is more compact, without the need to add step surfaces, etc., and the processing is more convenient. The round hole is more conducive to processing. After removing the second limiting member 16, the first limiting member 15 can be directly taken out from above.

[0051] In some embodiments, as Figure 9 shown, the first limiting member 15 includes an integrated first part 18, a third part 20, and a second part 19 arranged between the first part 18 and the third part 20. The second part 19 is connected with the first groove 17. The first part 18 extends along the axis of the tube sleeve 1 and is used to abut against the convex block 5. The third part 20 extends along the axis of the tube sleeve 1 and is used to connect the second limiting member 16. The edges of the third part 20 and the tube sleeve 1 both have protrusions extending towards the outside of the tube sleeve 1, which are used to limit the axial movement of the second limiting member 16 along the nail tube 2.

[0052] In a further embodiment, one end of the adjusting head 7 abuts against the end face of the second part 19 of the first limiting member 15 to limit the axial movement of the first limiting member 15 along the nail tube 2; the outer circle of the adjusting head 7 abuts against the upper end face of the third part 20 of the first limiting member 15 to limit the radial movement of the first limiting member 15 along the nail tube 2; the adjusting head 7 is provided with a groove for avoiding the convex block 5. When the groove is aligned with the convex block 5 by rotating the adjusting head 7, the nail tube 2 can be withdrawn. The adjusting head 7 also functions as a limiting member to further limit the position of the first limiting member 15 and improve the stability of the device.

[0053] In a specific embodiment, the thickness of the second part 19 is greater than that of the first part 18, and the thickness of the second part 19 is greater than that of the third part 20. The first limiting member 15 has a structure with a thick middle and thin sides. The middle second part 19 bears the maximum axial force, and the first part 18 and the third part 20 on both sides bear smaller radial forces, making the structure more compact.

[0054] In some embodiments, the sleeve 1 is provided with a second groove that communicates with the first groove 17. The second groove extends along the axial direction of the sleeve 1, and the third part 20 is adapted to be located in the second groove; an annular third groove 21 is provided on the outer circle of the sleeve 1, and the second limiting member 16 is clamped in the third groove 21.

[0055] In a specific embodiment, the connection mode between the second limiting member 16 and the sleeve 1 adopts at least one of elastic connection, clamping connection, and threaded connection; when the connection mode between the second limiting member 16 and the sleeve 1 adopts elastic connection, the second limiting member 16 is an elastic snap ring. The elastic snap ring is clamped in the third groove 21, and the elastic snap ring has an opening for avoiding the convex block 5. When disassembling the nail tube 2, rotate the elastic snap ring so that its opening is aligned with the convex platform, and then the nail tube 2 can be withdrawn. When installing the nail tube 2, rotate the elastic snap ring so that its opening is misaligned with the convex platform, and then the axial movement of the nail tube 2 can be restricted.

[0056] In some embodiments, the sleeve 1 is provided with a fourth groove 22 extending along the axial direction. The fourth groove 22 communicates with the first groove 17 and penetrates to the end face of the nail tube 2. The fourth groove 22 also communicates with the second groove, and the convex block 5 slides in the fourth groove 22. The fourth groove 22 is used to limit the circumferential rotation of the nail tube 2.

[0057] In the existing nail guns, when driving nails upward, dust easily enters from the front end of the nail gun, thereby reducing the service life of the nail gun. The nail gun in the present invention also has a dust-proof structure, which effectively prevents dust from entering the nail gun.

[0058] Regarding the above-mentioned dust-proof structure, in some embodiments, the nail gun includes a sleeve 1, an adjusting device, and a dust-proof cover 23. The sleeve 1 is used to install the nail tube 2 of the nail gun. The adjusting device includes an adjusting head 7. By screwing the adjusting head 7, the adjusting device is used to adjust the nail driving depth of the nail gun; as Figure 10 、Figure 11 As shown, a cavity for accommodating at least a part of the sleeve 1 is provided inside the dust cover 23. One end of the dust cover 23 facing the nailing direction of the nail gun has a first opening 24 for passing through the sleeve 1 and a second opening 25 communicating with the first opening 24. The sleeve 1 closes the first opening 24, and the adjustment head 7 is exposed from the second opening 25, and the adjustment head 7 closes the second opening 25.

[0059] The above-mentioned first opening 24 is used to avoid the sleeve 1, and the second opening 25 is used to avoid the coupling seat 8 of the adjustment device. The first opening 24 is closed by the sleeve 1, and the second opening 25 is closed by the adjustment head 7, so that the end face of the dust cover 23 facing the nailing direction of the nail gun is completely closed. When the nail gun nails upward, it effectively prevents dust from entering from the front end of the nail gun and extends the service life of the nail gun.

[0060] In some embodiments, the lower end of the dust cover 23 has a third opening 26, and the third opening 26 is used to pass through the sleeve 1. One side of the sleeve 1 matching the third opening 26 has a shielding portion, and the shielding portion is used to close the third opening 26. When installing the dust cover 23, the dust cover 23 is sleeved onto the nail tube 2 from the outside, which is convenient to operate. The shielding portion closes the third opening 26, effectively preventing dust from entering the nail gun from the side.

[0061] In a further solution, the width of the shielding portion is not greater than the width of the third opening 26. The cross-section of the sleeve 1 can be rectangular, and its shielding portion matches the third opening 26. The dust cover 23 has a certain elasticity, and under the action of elastic force, the dust cover 23 is clamped on the sleeve 1. It can be understood that a sealing plate detachably connected to the dust cover 23 can also be provided, and the sealing plate is used to close the third opening 26.

[0062] In some embodiments, the nail gun further includes a limiting device for limiting the axial movement of the nail tube 2. The limiting device is arranged outside the dust cover 23. In this embodiment, the limiting device includes a first limiting member 15 and a second limiting member 16, so that when disassembling, assembling and replacing the nail tube 2, there is no need to disassemble the dust cover 23, and the operation is more convenient.

[0063] In some embodiments, the nail gun further includes a base 27. The sleeve 1 is installed on the base 27. One end of the dust cover 23 is detachably connected to the base 27, and the other end is detachably connected to the sleeve 1. Here, the detachable connection can adopt screw connection. One end of the dust cover 23 facing the base 27 has a fourth opening 28, and the base 27 closes the fourth opening 28 to further seal the nail gun.

[0064] In some embodiments, both sides of the sleeve 1 have outwardly protruding ears 29. The ears 29 are disposed within the cavity of the dust cover 23. One end of the dust cover 23 facing the nail tube 2 is detachably connected to the ears 29. The dust cover 23 is fixed by the ears 29. Here, the detachable connection can adopt screw connection. Since the ears 29 are disposed inside the cavity, the overall structure of the nail gun is more concise and beautiful.

[0065] In some embodiments, the material of the dust cover 23 is elastic plastic, which reduces the weight of the nail gun, lowers the production cost, and makes it easier to put the dust cover 23 onto the sleeve 1, and the disassembly and assembly are more convenient.

[0066] In the description of this specification, the descriptions with reference to the terms "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0067] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0068] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present invention.

Claims

1. A nail gun, characterized in that, It includes a sleeve, a nail tube, and an adjustment device for adjusting the nail driving depth of the nail gun. The nail tube is axially slidably disposed within the sleeve; The adjustment device includes a rotatably arranged positioning member for defining the retraction length of the nail tube during nail driving; One end of the positioning member has a plurality of limiting surfaces that abut against at least a part of the nail tube, and the distances between the plurality of limiting surfaces and the front end face of the nail tube are all unequal; The adjustment device further includes an adjustment rod and an adjustment head for driving the adjustment rod to rotate. The adjustment head and the positioning member are both coaxially rotatably connected to the adjustment rod; at least two coupling seats are provided on the sleeve, and the adjustment rod is rotatably arranged between the two coupling seats; The adjustment rod includes a first rod with a polygonal cross-section and a second rod with a circular cross-section. The positioning member is sleeved on the first rod, and a hole adapted to the first rod is formed in the positioning member. The second rod is connected with a gear shifting device for restricting the circumferential rotation of the adjustment rod; A convex block is fixedly provided on the outer circumference of the nail tube. The nail tube is detachably connected with a first limiting member corresponding to the convex block for restricting the axial movement of the nail tube; a first groove is formed in the outer circumference of the sleeve, and at least a part of the first limiting member is clamped in the first groove for restricting the axial movement of the first limiting member along the sleeve; at least a part of the first limiting member is connected with a second limiting member for restricting the radial movement of the first limiting member along the sleeve; One end of the adjustment head abuts against the first limiting member for restricting the axial movement of the first limiting member along the nail tube; the outer circumference of the adjustment head abuts against the first limiting member for restricting the radial movement of the first limiting member along the nail tube; the adjustment head is provided with a groove for avoiding the convex block; 2. The nail gun according to claim 1, characterized in that, There are two or three or four of the limiting surfaces, and the adjacent limiting surfaces are smoothly transitioned through an inclined surface or an arc surface; 3. The nail gun according to claim 1, characterized in that, A convex block is fixedly provided on the outer circumference of the nail tube, and one of the limiting surfaces of the positioning member abuts against the convex block; 4. The nail gun according to claim 1, characterized in that, The gear shifting device includes an elastic snap ring and at least one sphere installed in one of the coupling seats. A plurality of positioning grooves matching the spheres are formed in the outer circumference of the second rod, and the plurality of positioning grooves are arranged in one-to-one correspondence with the plurality of limiting surfaces; The elastic snap ring is used to press at least a part of the sphere into the positioning groove. When a rotational external force is applied to the adjustment rod, the sphere overcomes the resilience of the elastic snap ring and disengages from the positioning groove; 5. The nail gun according to claim 1, characterized in that, The positioning member is connected with a reset mechanism for driving the nail tube to reset to the standby state. When the nail gun is in the standby state, the extended length of the nail tube is the longest; 6. The nail gun according to claim 1, characterized in that, The nail gun further includes a dust cover; a cavity for accommodating at least a part of the sleeve is provided inside the dust cover; One end of the dust cover facing the nail driving direction of the nail gun has a first opening for passing through the sleeve and a second opening communicating with the first opening. The sleeve closes the first opening, the adjustment head is exposed from the second opening, and the adjustment head closes the second opening.

Images