Nail gun

Abstract

The present application relates to a kind of nail gun, including driving seat, nail seat support and muzzle, muzzle is movably arranged relative to nail seat support;Nail seat support includes support body, positioning pin and elastic element, muzzle includes muzzle body and several fixed slots, positioning pin is under the elastic force of elastic element and is in abutment with fixed slot.This application sets the rear end of the matching surface of positioning pin and fixed slot as arc surface transition, when pulling muzzle forward, only need to overcome the elastic force of elastic element above positioning pin, it can adjust driving depth or replace muzzle;By setting the front end of the matching surface of positioning pin and fixed slot as plane, when pressing muzzle, muzzle is blocked by positioning pin, driving nail seat support moves back together, trigger nail gun to press down muzzle head can prepare the mechanism of driving, ensure reliable operation;By setting multiple fixed slots, it realizes the driving depth of staged adjustment, improves the experience of user.

Description

[Technical Field]

[0001] This invention relates to the field of building construction technology, and in particular to a nail gun. [Background Technology]

[0002] A nail gun is a product composed of a gun body and a magazine assembly. There are various types, including electric nail guns, pneumatic nail guns, gas nail guns, and manual nail guns. Nail guns are mainly used in the construction and interior decoration industries. Their working principle is as follows: pressing down the nozzle and activating the switch starts the motor. This motor, through a lifting mechanism, drives the firing pin from its initial locked position, causing a piston to compress air. Once the firing pin disengages from the lifting mechanism, it is suddenly released, striking the nails in the nail magazine that have been pushed into the nail holder by the nail pusher, thus ejecting them from the nozzle. During use, to meet different nailing depth requirements, various nail guns generally have a nailing depth adjustment mechanism. Furthermore, to meet different usage scenarios, the nozzle usually needs to be replaced. However, existing nailing depth adjustment mechanisms are not only complex in structure but also inconvenient to adjust. Replacing the nozzle often requires first unlocking the locking nut and then unscrewing the nozzle, which is cumbersome and results in a poor user experience.

[0003] Therefore, it is indeed necessary to provide an improved nail gun to overcome the shortcomings of the existing technology. [Summary of the Invention]

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a nail gun with a simple structure, easy adjustment of nailing depth, and quick nozzle replacement.

[0005] The technical solution adopted by the present invention to solve the problem of the prior art is as follows: a nail gun, including a nail base, a nail base bracket connected to the nail base, and a nozzle mounted on the nail base bracket, wherein the nozzle is movably disposed relative to the nail base bracket; the nail base bracket includes a bracket body supported on the nail base, a positioning pin movably mounted on the bracket body, and an elastic member biasing the positioning pin; the end of the positioning pin is provided with a protrusion; the nozzle includes a nozzle body connected to the nail base bracket and a plurality of fixing grooves cooperating with the protrusion; the plurality of fixing grooves are arranged at intervals along the axial direction of the nozzle body; the protrusion abuts against the fixing grooves under the elastic force of the elastic member.

[0006] A further improvement is as follows: the protrusion and the fixing groove have a front end and a rear end along the nailing direction; the front end of the protrusion is a vertical surface; an arc-shaped surface is provided between the front end and the rear end of the protrusion; the front end of the fixing groove is a vertical wall; and an arc-shaped groove is provided between the front end and the rear end of the fixing groove.

[0007] A further improvement is that the height of the vertical surface is greater than the height of the vertical wall, and the curvature of the arc-shaped surface is greater than or equal to the curvature of the arc-shaped groove.

[0008] A further improvement is as follows: the nozzle includes a sliding groove arranged along the axial direction of the nozzle body and a transition groove arranged along the circumferential direction of the nozzle body, the transition groove being connected between the fixed groove and the sliding groove.

[0009] A further improvement is that the cross-sectional shape of the transition groove is consistent with the cross-sectional shape of the fixed groove, and the depth of the fixed groove is greater than the depth of the transition groove.

[0010] A further improvement is that the sliding groove connects the ends of several transition grooves in the axial direction.

[0011] A further improvement is as follows: the support body includes an axially penetrating connecting pipe and a first mounting hole disposed above the connecting pipe, the first mounting hole communicating with the connecting pipe.

[0012] A further improvement is as follows: the connecting tube is slidably disposed on the nailing seat, the nozzle is inserted into the connecting tube, and the positioning pin and the elastic element are received in the first mounting hole.

[0013] A further improvement is as follows: the positioning pin includes a column body housed in the first mounting hole, the protrusion is disposed at the bottom end of the column body, a second mounting hole is provided in the column body, and the elastic element is installed in the second mounting hole.

[0014] A further improvement is as follows: the nail holder includes a cover plate that abuts against the elastic member and a fastening screw that fixes the cover plate. One end of the elastic member abuts against the cover plate, and the other end of the elastic member abuts against the positioning pin. The elastic member is in a compressed state.

[0015] A further improvement is as follows: the bracket body is provided with a recessed fixing groove, and the fastening screws are inserted into the cover plate and the fixing groove in sequence to install the cover plate to the bracket body.

[0016] Compared with the prior art, the present invention has the following advantages: By setting the rear end of the mating surface between the positioning pin and the fixing groove as an arc transition, when the nozzle is pulled forward, only the elastic force of the elastic element above the positioning pin needs to be overcome to adjust the nailing depth or replace the nozzle; by setting the front end of the mating surface between the positioning pin and the fixing groove as a flat surface, when the nozzle is pressed, the nozzle is blocked by the positioning pin, which drives the nail seat bracket to move backward together, triggering the mechanism that the nail gun presses down the head to prepare for nailing, ensuring reliable operation; by setting multiple fixing grooves, the nailing depth can be adjusted in stages, improving the user experience. [Image Description]

[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the nail gun of the present invention;

[0019] Figure 2 yes Figure 1 The diagram shows the disassembly of the nail gun's nail holder and nozzle.

[0020] Figure 3 yes Figure 1 A schematic diagram of the nozzle structure of the nail gun shown;

[0021] Figure 4 yes Figure 1 The nail gun shown is a cross-sectional view of the nail holder and nozzle in the first position.

[0022] Figure 5 yes Figure 1 The nail gun shown is a cross-sectional view of the nail holder and nozzle in the second position.

[0023] Figure 6 yes Figure 1 A cross-sectional view of the positioning pin of the nail gun shown.

[0024] Figure 7 yes Figure 1 A cross-sectional view of the nail gun's nail holder and nozzle from another angle;

[0025] Figure 8 yes Figure 4 A magnified view of circle N in the nail gun shown.

[0026] Meaning of the reference numerals in the diagram:

[0027] Nail gun 100, casing 10

[0028] Nail holder 1 Mounting tube 11

[0029] Pin holder bracket 2, bracket body 21

[0030] Connecting pipe 211 Fixing groove 212

[0031] First mounting hole 213, locating pin 22

[0032] Protrusion 221 Vertical surface 2211

[0033] Curved surface 2212 Column 222

[0034] Second mounting hole 223, elastic element 23

[0035] Cover plate 24, first positioning post 241

[0036] Second positioning post 242 Fastening screw 25

[0037] Nozzle 3 Nozzle body 31

[0038] Fixed groove 321 Vertical wall 3211

[0039] Arc-shaped groove 3212 Transition groove 322

[0040] Sliding groove 33 Cylinder assembly 4

[0041] Nail box 5 Switch assembly 6

[0042] Battery Pack 7 [Detailed Implementation]

[0043] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "upper," "lower," "front," and "rear" that indicate orientation or positional relationship are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0044] Please see Figure 1 As shown, the present invention relates to a nail gun 100, which is used for fixing various bamboo, wood products and other soft or hard sheet materials to brick-concrete walls and concrete components, as well as for connecting and fixing low-density metal or polymer material components. The nail gun 100 includes a housing 10, a motor (not shown) and a lifting mechanism (not shown) housed in the housing 10, a cylinder assembly 4 connected to the lifting mechanism, a firing pin (not shown) disposed in the cylinder assembly 4, a nail-driving seat 1 mounted on the front end of the housing 10, a nail seat bracket 2 and a nail magazine 5 connected to the nail-driving seat 1, a nozzle 3 mounted on the nail seat bracket 2, a switch assembly 6 electrically connected to the motor, and a battery pack 7 detachably mounted on the housing 10, the battery pack supplying power to the nail gun 100.

[0045] The working principle of the nail gun 100 is as follows: the nozzle 3 is pressed down on the surface of the workpiece to be hit, the nozzle drives the nail holder bracket 2 to move backward relative to the nailing base 1, triggering the pre-nailing state of the nail gun 100. Then, the switch assembly 6 is pressed, the motor is started, the motor drives the lifting mechanism, and the lifting mechanism drives the firing pin from the initially locked ready position to drive the piston to compress the high-pressure air in the cylinder assembly 4. After the firing pin disengages from the lifting mechanism, the high-pressure air is released instantaneously, pushing the firing pin to strike the row of nails in the nail magazine 5 that have been pushed into the nailing base 1 by the nail pusher, so that they are ejected from the nozzle 3.

[0046] Please see Figures 1 to 3 As shown, the nozzle 3 is movably disposed relative to the nail holder bracket 2. The nail holder bracket 2 includes a bracket body 21 supported on the nail holder 1, a positioning pin 22 movably mounted on the bracket body 21, and an elastic element 23 biasing the positioning pin 22. The bracket body 21 is provided with an axially penetrating connecting pipe 211, and the nail holder 1 is provided with an installation pipe 11. The connecting pipe 211 slides axially within the installation pipe 11.

[0047] Specifically, the nozzle 3 and the nail holder bracket 2 together constitute the nailing depth adjustment mechanism of the nail gun 100. This nailing depth adjustment mechanism is movably mounted on the nail holder 1, and the nailing depth adjustment mechanism of the nail gun 100 is provided with an ejection end for ejecting fasteners. One end of the nozzle 3 is engaged with one end of the nail holder bracket 2 by plugging. The end of the nail holder bracket 2 away from the nozzle 3 is used to install on the nail holder 1, so that the nailing depth adjustment mechanism of the nail gun 100 is mounted on the body of the nail gun 100 through the nail holder bracket 2. The end of the nozzle 3 away from the nail holder bracket 2 is the ejection end of the nail gun 100.

[0048] Please see Figure 2 , Figure 3 and Figure 6 As shown, the end of the positioning pin 22 is provided with a protrusion 221. The nozzle 3 includes a nozzle body 31 connected to the nail seat bracket 2 and a plurality of fixing grooves 321 that cooperate with the protrusion 221. The plurality of fixing grooves 321 are arranged at intervals along the axial direction of the nozzle body 31. The protrusion 221 abuts against the fixing groove 321 under the elastic force of the elastic member 23.

[0049] In this embodiment, the elastic element 23 is a spring. In other embodiments, it can be any kind of elastic element with biased pressure, which is not limited here.

[0050] Furthermore, the protrusion 221 and the fixing groove 321 have a front end and a rear end along the nailing direction. The front end of the protrusion 221 is a vertical surface 2211, and an arc-shaped surface 2212 is provided between the front end and the rear end of the protrusion 221. The front end of the fixing groove 321 is a vertical wall 3211, and an arc-shaped groove 3212 is provided between the front end and the rear end of the fixing groove 321.

[0051] Specifically, the protrusion 221 cooperates with the fixing groove 321. Since the elastic element 23 is set on the protrusion 221, a preset force is applied to the protrusion 221. Under the action of no external force, the nozzle 3 and the nail seat bracket 2 remain stable. Furthermore, since the rear end of the mating surface between the protrusion 221 and the fixing groove 321 is set as an arc transition, the friction of the arc contact is small. When the nozzle 3 is pulled forward, it is only necessary to overcome the elastic force of the elastic element 23 located above the positioning pin 22 to reduce the nailing depth or pull out the nozzle 3 for subsequent replacement.

[0052] The front end of the mating surface between the protrusion 221 and the fixing groove 321 is set as a plane, and the vertical surface 2211 is in rigid contact with the vertical wall 3211. When the nozzle 3 is pressed, the nozzle 3 is blocked by the protrusion 221, which drives the nail seat bracket 2 to move backward together, triggering the mechanism of the nail gun 100 pressing down the head before preparing to nail, ensuring reliable operation.

[0053] A grid is provided between each pair of fixing slots 321 to separate them. By setting multiple fixing slots 321, the nailing depth can be adjusted in stages. Furthermore, as the protrusion 221 slides through the fixing slots 321, a staggered effect is created, thereby improving the user experience. Optionally, please refer to... Figure 3 As shown, in this embodiment, four fixing slots 321 are provided, that is, four nailing depth adjustment positions are provided. In other embodiments, the number of fixing slots 321 may be three, five or six, etc., which is not limited here.

[0054] Please see Figure 4 , Figure 5 and Figure 8As shown, the height of the vertical surface 2211 is greater than the height of the vertical wall 3211, meaning the bottom end of the protrusion 221 completely abuts against the bottom of the fixing groove 321, ensuring a more reliable connection; the curvature of the arc-shaped surface 2212 is greater than or equal to the curvature of the arc-shaped groove 3212. The curvatures of the arc-shaped surface 2212 and the arc-shaped groove 3212 can be specifically set according to actual conditions. For example, the curvature of the arc-shaped surface 2212 can be equal to the curvature of the arc-shaped groove 3212, meaning the arc-shaped surface 2212 and the arc-shaped groove 3212 have the same shape and size; alternatively, the curvature of the arc-shaped surface 2212 can be greater than the curvature of the arc-shaped groove 3212, meaning a gap remains after the arc-shaped groove 3212 mates with the arc-shaped surface 2212.

[0055] Optionally, in this embodiment, the curvature of the arc-shaped surface 2212 is equal to the curvature of the arc-shaped groove 3212. This arrangement is more conducive to the cooperation between the protrusion 221 and the fixing groove 321, making the structure more compact and the connection more reliable.

[0056] Please see Figure 3 As shown, the nozzle 3 includes a sliding groove 33 arranged along the axial direction of the nozzle body 31 and a transition groove 322 arranged along the circumferential direction of the nozzle body 31. The transition groove 322 connects the fixed groove 321 and the sliding groove 33, and the sliding groove 33 connects the ends of a plurality of transition grooves 322 in the axial direction.

[0057] By rotating the nozzle 3 toward the transition groove 322, the elastic force of the elastic element 23 is overcome until the protrusion 221 moves from the fixed groove 321 to the transition groove 322 and finally falls into the sliding groove 33. When the protrusion 221 is located in the sliding groove 33, the nozzle can move along the front and rear ends of the nailing direction. At this time, the nailing depth can be adjusted or the nozzle 3 can be pulled out for subsequent replacement.

[0058] When installing the nozzle 3, align the protrusion 221 with the sliding groove 33 and push it in. The user can move the nozzle 3 to the desired nailing depth and then rotate it toward the transition groove 322 until it falls into the fixing groove 321 to complete the installation.

[0059] Furthermore, the cross-sectional shape of the transition groove 322 is consistent with that of the fixed groove 321, making it more convenient and faster to process the nozzle 3; the depth of the fixed groove 321 is greater than the depth of the transition groove 322, which is conducive to a more reliable and stable connection between the nozzle 3 and the nail seat bracket 2.

[0060] Preferably, the connection between the transition groove 322 and the sliding groove 33 is an inclined surface. When the protrusion 221 moves to any of the transition grooves 322, the inclined surface acts as a guide, making installation more convenient.

[0061] Please see Figures 4 to 8 As shown, a first mounting hole 213 is provided above the connecting pipe 211, and the first mounting hole 213 communicates with the connecting pipe 211. The connecting pipe 211 is slidably disposed on the nailing seat 1, the nozzle 3 is inserted into the connecting pipe 211, and the positioning pin 22 and the elastic element 23 are received in the first mounting hole 213.

[0062] Specifically, the positioning pin 22 is movably disposed in the first mounting hole 213. Under the action of no external force, the elastic element 23 applies a spring force downward to the protrusion 221, so that the protrusion 221 protrudes out of the lower end of the first mounting hole 213, which facilitates its cooperation with the nozzle 3. When the nozzle 3 is rotated or pulled, the elastic element 23 is compressed, and the bottom of the protrusion 221 is forced to move upward.

[0063] Please see Figure 6 As shown, the positioning pin 22 includes a column 222 housed in the first mounting hole 213, a protrusion 221 disposed at the bottom end of the column 222, a second mounting hole 223 formed in the column 222, and an elastic member 23 installed in the second mounting hole 223.

[0064] Furthermore, the upper end of the elastic element 23 is connected to the bracket body 21. The specific connection method of the elastic element 23 on the bracket body 21 can be set according to the actual situation. For example, the elastic element 23 can be detachably connected to the bracket body 21 through a cover plate; or the elastic element 23 can be directly fixed to the bracket body 21.

[0065] Optionally, in this embodiment, the elastic element 23 is detachably connected to the bracket body 21 via a cover plate. This arrangement facilitates disassembly and replacement when the elastic element 23 fails. The following description uses the example of the elastic element 23 being detachably connected to the bracket body 21 via a cover plate.

[0066] The nail holder 2 includes a cover plate 24 that abuts against the elastic member 23 and a fastening screw 25 that fixes the cover plate 24. One end of the elastic member 23 abuts against the cover plate 24, and the other end of the elastic member 23 abuts against the positioning pin 22. The elastic member 23 is in a compressed state.

[0067] Please see Figure 8As shown, the bracket body 21 is provided with a recessed fixing groove 212. The fastening screw 25 passes through the cover plate 24 and the fixing groove 212 in sequence to install the cover plate 24 to the bracket body 21. The cover plate 24 includes a first positioning post 241 installed in the fixing groove 212 and a second positioning post 242 installed in the first mounting hole 213. The fastening screw 25 extends through the first positioning post 241. The end of the elastic member 23 away from the positioning pin 22 is sleeved on the second positioning post 242, so that the elastic member 23 is reliably positioned in the first mounting hole 213 and is not easily displaced.

[0068] This invention sets the rear end of the mating surface between the positioning pin 22 and the fixing groove 321 as an arc transition. When the nozzle 3 is pulled forward, the nailing depth can be adjusted or the nozzle 3 can be replaced simply by overcoming the elastic force of the elastic element 23 located above the positioning pin 22. By setting the front end of the mating surface between the positioning pin 22 and the fixing groove 321 as a flat surface, when the nozzle 3 is pressed, the nozzle 3 is blocked by the positioning pin 22, causing the nail holder bracket 2 to move backward together, triggering the mechanism of the nail gun 100 pressing down the head to prepare for nailing, ensuring reliable operation. By setting multiple fixing grooves 321, the nailing depth can be adjusted in stages, improving the user experience.

[0069] This invention is not limited to the specific embodiments described above. Those skilled in the art will readily understand that many other alternatives to the nail gun of this invention can be found without departing from the principles and scope of the invention. The scope of protection of this invention is defined by the claims.

Claims

1. A nail gun, comprising a nail-driving base, a nail-base bracket connected to the nail-driving base, and a nozzle mounted on the nail-base bracket, wherein the nozzle is movably disposed relative to the nail-base bracket; characterized in that: The nail holder bracket includes a bracket body supported on the nail holder, a positioning pin movably mounted on the bracket body, and an elastic element that biases the positioning pin. The end of the positioning pin is provided with a protrusion. The nozzle includes a nozzle body connected to the nail holder bracket, a plurality of fixing grooves that cooperate with the protrusion, and a sliding groove that is arranged along the axial direction of the nozzle body and communicates with the fixing grooves. The plurality of fixing grooves are arranged at intervals along the axial direction of the nozzle body. The protrusion abuts against the fixing groove under the elastic force of the elastic element.

2. The nail gun according to claim 1, characterized in that: The protrusion and the fixing groove have a front end and a rear end along the nailing direction. The front end of the protrusion is a vertical surface, and an arc-shaped surface is provided between the front end and the rear end of the protrusion. The front end of the fixing groove is a vertical wall, and an arc-shaped groove is provided between the front end and the rear end of the fixing groove.

3. The nail gun according to claim 2, characterized in that: The height of the vertical surface is greater than the height of the vertical wall, and the curvature of the arc-shaped surface is greater than or equal to the curvature of the arc-shaped groove.

4. The nail gun according to claim 2, characterized in that: The nozzle also includes a transition groove arranged circumferentially along the nozzle body, the transition groove connecting the fixed groove and the sliding groove.

5. The nail gun according to claim 4, characterized in that: The cross-sectional shape of the transition groove is consistent with that of the fixed groove, and the depth of the fixed groove is greater than that of the transition groove.

6. The nail gun according to claim 4, characterized in that: The sliding groove connects the ends of several transition grooves in the axial direction.

7. The nail gun according to claim 1, characterized in that: The bracket body includes an axially penetrating connecting pipe and a first mounting hole disposed above the connecting pipe, the first mounting hole communicating with the connecting pipe.

8. The nail gun according to claim 7, characterized in that: The connecting tube is slidably disposed on the nailing seat, the nozzle is inserted into the connecting tube, and the positioning pin and the elastic element are received in the first mounting hole.

9. The nail gun according to claim 7, characterized in that: The positioning pin includes a column body housed in the first mounting hole, a protrusion disposed at the bottom end of the column body, a second mounting hole being formed in the column body, and an elastic element being installed in the second mounting hole.

10. The nail gun according to claim 7, characterized in that: The pin holder includes a cover plate that abuts against the elastic member and a fastening screw that fixes the cover plate. One end of the elastic member abuts against the cover plate, and the other end of the elastic member abuts against the positioning pin. The elastic member is in a compressed state.

11. The nail gun according to claim 10, characterized in that: The bracket body is provided with a recessed fixing groove, and the fastening screws are inserted into the cover plate and the fixing groove in sequence to install the cover plate to the bracket body.

Images