Nail gun and safety assembly

Abstract

The utility model discloses a nail gun and insurance subassembly, including insurance seat, insurance handle, adjusting lever, adjusting nut, insurance frame and spring, the insurance seat is equipped with the passageway for the insurance handle to pass through, the insurance handle one end is connected with the sliding of insurance seat, and the insurance handle other end is connected with the rotation of adjusting lever, the adjusting nut fastening sleeve is established in the outer wall of adjusting lever, the outer wall of adjusting lever one end to insurance frame is equipped with the outer thread, the insurance frame is equipped with the internal thread with outer thread cooperation, spring one end is connected with the part of adjusting lever through the insurance handle, and the other end of spring leans against the inner wall of insurance seat, the end face of adjusting nut away from spring leans against and is provided with first limit rod, one end of insurance frame is connected with adjusting lever, and the other end of insurance frame extends in the lateral direction of adjusting lever movably. Adjusting is carried out through the thread transmission between adjusting lever and insurance frame, and it is guaranteed that the rotation movement of adjusting lever can be converted into the axial movement of insurance frame efficiently in the adjusting process.

Description

Technical Field

[0001] This utility model relates to the field of nailing technology, specifically to a nail gun and a safety component. Background Technology

[0002] In the technical field of nail guns and other nail-driving tools, their basic working principle is that the user pulls the lever (or safety lever) to trigger the internal firing pin mechanism, thus firing the nail. However, in traditional designs, the lever and its linkage mechanism typically lack a precisely adjustable mechanical limit structure. This directly results in the striking force and final stroke of all nails being consistent, leading to a fixed nailing depth. In actual construction, facing different materials (such as hardwood, pine, and gypsum board) or different process requirements, this fixed nailing depth obviously cannot meet diverse needs: on hard materials, insufficient depth may result in insufficient fastening force, while on soft materials, excessive depth may cause damage to the workpiece surface or excessive denting of the nail head.

[0003] Therefore, there has long been an urgent need in this field for continuous, stable, and reliable adjustment of nail driving depth. Although some improvement schemes have attempted to achieve depth adjustment by introducing simple shims or stops, these methods all suffer from problems such as inconvenient adjustment, low accuracy, and inability to dynamically reset. Utility Model Content

[0004] To address the technical problems of existing nail guns, such as inconvenient adjustment, low precision, and inability to dynamically reset, this utility model proposes a nail gun and safety assembly. The adjustment is achieved by using the threaded transmission between the adjusting rod and the safety frame, ensuring that the rotational movement of the adjusting rod can be efficiently converted into the axial movement of the safety frame during the adjustment process. The spring not only provides axial constraint for the adjusting rod but also provides an automatic reset function.

[0005] The technical solution adopted by this utility model is as follows: A safety component includes a safety seat, a safety handle, an adjusting rod, an adjusting nut, a safety frame, and a spring. The safety seat has a channel for the safety handle to pass through. One end of the safety handle is slidably connected to the safety seat, and the other end of the safety handle is rotatably connected to the adjusting rod. The adjusting nut is tightly fitted onto the outer peripheral wall of the adjusting rod. The outer peripheral wall of the end of the adjusting rod facing the safety frame has an external thread. The safety frame has an internal thread that mates with the external thread. One end of the spring is connected to the portion of the adjusting rod that passes through the safety handle, and the other end of the spring abuts against the inner wall of the safety seat. The end face of the adjusting nut away from the spring abuts against a first limiting rod. One end of the safety frame is connected to the adjusting rod, and the other end of the safety frame extends movably to the side of the adjusting rod.

[0006] Optionally, the outer peripheral wall of the adjusting rod is provided with a protrusion, and the adjusting nut is provided with a groove that mates with the protrusion.

[0007] Optionally, the adjusting rod is provided with a step, one end of the adjusting nut abuts against the first limiting rod, and the other end of the adjusting nut abuts against the step.

[0008] Optionally, the adjusting rod includes a first limiting section, a second limiting section, a third limiting section, and a guide section connected in sequence. The first limiting section is fixedly fitted with a limiting block. The outer peripheral wall of the second limiting section is provided with the external thread, the length of which is greater than the length of the internal thread of the adjusting nut. The third limiting section is provided with the protrusion and the step. The safety handle is provided with a through hole for the guide section to pass through. The end of the spring away from the safety seat is fitted onto the outer peripheral wall of the guide section.

[0009] Optionally, the diameter of the third limiting segment is larger than the diameters of the second limiting segment and the guide segment, respectively.

[0010] Optionally, the safety handle includes a connecting part and a handle for triggering the switch. One end of the handle is connected to the connecting part at an angle, and the other end of the handle passes through the channel. The connecting part is provided with the through hole.

[0011] Optionally, the third limiting segment has a limiting groove at one end facing the connecting part, and the connecting part has a limiting protrusion that cooperates with the limiting groove.

[0012] Optionally, the safety seat is provided with a second limiting rod, and the side of the connecting part opposite to the handle moves against the second limiting rod.

[0013] Optionally, the inner wall of the safety seat is provided with a locking protrusion, which movably abuts against the connecting part of the safety handle.

[0014] This utility model also discloses a nail gun, including a gun frame, a nozzle, a magazine, and the safety assembly described above. The gun frame is connected to the nozzle, the magazine is connected to the nozzle, the gun frame is provided with a first limiting rod, one end of the safety assembly is connected to an adjusting rod, and the other end of the safety assembly moves around the magazine and is located in front of the nozzle.

[0015] The beneficial effects of this invention are as follows: When adjusting the nailing depth, the user rotates the adjusting nut. Due to the cooperation between the protrusion and the groove, the adjusting nut drives the adjusting rod to rotate synchronously. Because the adjusting rod is restricted by the spring force and the first limiting rod (transmitted through the adjusting nut), it cannot move axially. Simultaneously, because the safety holder is constructed as a cross-connection structure, its rotation is restricted, so it cannot rotate synchronously with the adjusting rod. At this time, the rotation of the adjusting rod is converted into linear movement of the safety holder along the axis of the adjusting rod through the cooperation of the external and internal threads. The movement of the safety holder directly changes the relative distance between the safety handle and the nail gun nozzle (working end face). When the safety holder moves forward, the distance between the safety handle and the nozzle increases, and the depth of the nail driven into the workpiece becomes shallower; when the safety holder moves backward, the distance between the safety handle and the nozzle decreases, and the depth of the nail driven into the workpiece becomes deeper. When the nail gun leaves the working surface, the safety holder is no longer subjected to pressure from the workpiece. At this point, the restoring force of the compressed spring is released, driving the adjusting rod to move backward. The adjusting rod then moves the safety bracket back to its initial safe position. In this position, the safety handle cannot be pressed, thus triggering the electromagnetic switch and achieving the safety function. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the nail gun proposed in an embodiment of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the nail gun proposed in an embodiment of the present utility model;

[0018] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0019] Figure 4 This is an exploded diagram of the adjusting rod and safety handle.

[0020] The markings in the attached figures are as follows: 1. Safety seat; 11. Second limit rod; 12. Locking protrusion; 2. Safety handle; 21. Connecting part; 211. Through hole; 212. Limiting protrusion; 22. Handle; 3. Adjusting rod; 31. First limit section; 32. Second limit section; 33. Third limit section; 331. Limiting groove; 34. Guide section; 35. Limiting block; 36. External thread; 37. Protrusion; 38. Step; 4. Adjusting nut; 5. Safety frame; 6. Spring; 7. Gun mount; 71. First limit rod; 8. Mouthpiece; 9. Magazine; 10. Switch. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 4As shown, this embodiment discloses a safety assembly for a nail gun. The safety assembly includes a safety seat 1, a safety handle 2, an adjusting rod 3, an adjusting nut 4, a safety frame 5, and a spring 6. The safety seat 1 is used to fix it to the nail gun body. The safety seat 1 has a channel for the safety handle 2 to pass through and allows it to slide within a certain range. The safety handle 2 is the key component for triggering the nail gun switch 10. One end of it is slidably connected to the safety seat 1 through the channel, and the other end is rotatably connected to the adjusting rod 3. This connection method allows the safety handle 2 to slide back and forth relative to the safety seat 1, and also allows the adjusting rod 3 to rotate at its connection point. The adjusting rod 3 is the core transmission component for depth adjustment. Its outer peripheral wall facing the safety frame 5 has an external thread 36, and the adjusting nut 4 is securely fitted onto the outer peripheral wall of the adjusting rod 3. The outer peripheral wall of the adjusting rod 3 has a protrusion 37, which can be one or more axially extending keys, and the adjusting nut 4 has a groove that mates with the protrusion 37. The adjusting rod 3 and adjusting nut 4 are locked together by the engagement of protrusion 37 and groove, enabling synchronous rotation. The safety bracket 5 directly contacts the workpiece and controls the nailing depth; it has an internal thread that mates with the external thread 36 on the adjusting rod 3. The safety bracket 5 has a bridging structure; one end is connected to the adjusting rod 3 via the internal thread, and the other end extends laterally from the adjusting rod 3. This design ensures that the two ends of the safety bracket 5 are laterally separated during operation. For example, in actual assembly, this bridging structure bypasses the nail gun's magazine 9, restricting the safety bracket 5 from synchronous rotation and allowing only axial movement when the adjusting rod 3 rotates. A spring 6 provides the restoring force; one end of the spring 6 is connected to the portion of the adjusting rod 3 that passes through the safety handle 2, and the other end abuts against the inner wall of the safety seat 1.

[0023] When adjusting the nailing depth, the user rotates the adjusting nut 4. Due to the engagement of the protrusion 37 and the groove, the adjusting nut 4 drives the adjusting rod 3 to rotate synchronously. Because the adjusting rod 3 is restricted by the spring force of the spring 6 and the first limiting rod 71 (transmitted through the adjusting nut 4), it cannot move axially. Simultaneously, because the safety bracket 5 is constructed as a bridging structure, its rotation is restricted, so it cannot rotate synchronously with the adjusting rod 3. At this time, the rotation of the adjusting rod 3 is converted into linear movement of the safety bracket 5 along the axis of the adjusting rod 3 through the engagement of the external thread 36 and the internal thread. The movement of the safety bracket 5 directly changes the relative distance between the safety handle 2 and the nail gun nozzle 8 (working end face). When the safety bracket 5 moves forward, the distance between the safety handle 2 and the nozzle 8 increases, and the nail penetration depth in the workpiece becomes shallower; when the safety bracket 5 moves backward, the distance between the safety handle 2 and the nozzle 8 decreases, and the nail penetration depth in the workpiece becomes deeper.

[0024] When the nail gun leaves the work surface, the safety bracket 5 is no longer under the pressure of the workpiece. At this time, the restoring force of the previously compressed spring 6 is released, which drives the adjusting rod 3 to move backward. The adjusting rod 3 then drives the safety bracket 5 back to its initial safe position. In this position, the safety handle 2 cannot be pressed, thereby triggering the electromagnetic switch 10, realizing the safety function.

[0025] The adjusting rod 3 has a step 38, and one end of the adjusting nut 4 abuts against the first limiting rod 71, which is fixed to the nail gun holder 7. The other end of the adjusting nut 4 abuts against the step 38. In this way, the adjusting rod 3 and the adjusting nut 4 are restricted to axial movement as a whole, and can only rotate.

[0026] The adjusting rod 3 can be specifically designed to include a first limiting section 31, a second limiting section 32, a third limiting section 33, and a guide section 34 connected in sequence. The first limiting section 31 is fixedly fitted with a limiting block 35 for engagement with the internal structure, such as the spring 6. The outer peripheral wall of the second limiting section 32 is provided with the external thread 36, and its thread length is greater than the length of the internal thread of the adjusting nut 4, ensuring that the adjusting nut 4 can always engage with the external thread 36 within its stroke. The third limiting section 33 is provided with the protrusion 37 and a step 38. The diameter of the third limiting section 33 is larger than the diameters of the second limiting section 32 and the guide section 34, forming a clearly defined step 38 structure, facilitating processing and assembly. The guide section 34 passes through the through hole 211 on the connecting part 21 of the safety handle 2, and the end of the spring 6 away from the safety seat 1 is fitted onto the outer peripheral wall of the guide section 34, ensuring the stability of the spring 6 during operation. The adjusting rod 3 can be integrally formed.

[0027] To prevent the adjustment mechanism from rotating on its own without human intervention, the third limiting section 33 of the adjusting rod 3 has a limiting groove 331 at the end facing the safety handle 2, and the connecting part 21 of the safety handle 2 has a limiting protrusion 212 that cooperates with the limiting groove 331. The cooperation between the limiting protrusion 212 and the limiting groove 331 effectively prevents the adjusting rod 3 and the adjusting nut 4 from rotating accidentally. The end face of the limiting protrusion 212 that cooperates with the limiting groove 331 can be an arc surface, making it convenient for the user to rotate the adjusting rod 3 through the adjusting nut 4. Alternatively, the third limiting section 33 has a limiting protrusion 212, and the connecting part 21 has a limiting groove 331. At the same time, the safety seat 1 is also provided with a second limiting rod 11. The side of the connecting part 21 of the safety handle 2 away from the handle 22 moves against the second limiting rod 11, and the second limiting rod 11 limits the sliding stroke of the safety handle 2 as it moves forward toward the nozzle 8. The inner wall of the safety seat 1 is provided with a locking protrusion 12, which cooperates with the connecting part 21 of the safety handle 2 to limit the travel of the safety handle 2 to move backward, thereby precisely defining the axial adjustment range of the safety frame 5.

[0028] The safety handle 2 includes a connecting portion 21 and a handle portion 22 for triggering the switch 10. One end of the handle portion 22 is connected to the connecting portion 21 at an angle, such as an L-shape, and the other end of the handle portion 22 passes through the channel.

[0029] This embodiment also discloses a nail gun, including a gun frame 7, a nozzle 8, a magazine 9, and the aforementioned safety assembly. The gun frame 7 is connected to the nozzle 8, and the magazine 9 is connected to the nozzle 8. The gun frame 7 is provided with a first limiting rod 71. The safety assembly is installed on the gun frame 7, and its safety bracket 5 has a bridging structure that just bypasses the magazine 9, allowing its other end to move in front of the nozzle 8 to contact the workpiece.

[0030] It is understood that the specific embodiments described above are merely for explaining the relevant utility model and not for limiting the utility model. It should also be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict with each other. All equivalent structural transformations made based on the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly included within the protection scope of this utility model.

Claims

1. A safety component, characterized in that, The device includes a safety seat, a safety handle, an adjusting rod, an adjusting nut, a safety frame, and a spring. The safety seat has a channel for the safety handle to pass through. One end of the safety handle is slidably connected to the safety seat, and the other end of the safety handle is rotatably connected to the adjusting rod. The adjusting nut is fastened to the outer peripheral wall of the adjusting rod. The outer peripheral wall of the adjusting rod facing the safety frame has an external thread, and the safety frame has an internal thread that mates with the external thread. One end of the spring is connected to the portion of the adjusting rod that passes through the safety handle, and the other end of the spring abuts against the inner wall of the safety seat. The end face of the adjusting nut away from the spring abuts against a first limiting rod. One end of the safety frame is connected to the adjusting rod, and the other end of the safety frame extends movably to the side of the adjusting rod.

2. The insurance component according to claim 1, characterized in that, The outer peripheral wall of the adjusting rod has a protrusion, and the adjusting nut has a groove that mates with the protrusion.

3. The insurance component according to claim 2, characterized in that, The adjusting rod has a step, one end of the adjusting nut abuts against the first limiting rod, and the other end of the adjusting nut abuts against the step.

4. The insurance component according to claim 3, characterized in that, The adjusting rod includes a first limiting section, a second limiting section, a third limiting section, and a guide section connected in sequence. The first limiting section is fixedly fitted with a limiting block. The outer peripheral wall of the second limiting section is provided with the external thread, the length of which is greater than the length of the internal thread of the adjusting nut. The third limiting section is provided with the protrusion and the step. The safety handle is provided with a through hole for the guide section to pass through. The end of the spring away from the safety seat is fitted onto the outer peripheral wall of the guide section.

5. The insurance component according to claim 4, characterized in that, The diameter of the third limiting segment is larger than the diameters of the second limiting segment and the guide segment, respectively.

6. The insurance component according to claim 4, characterized in that, The safety handle includes a connecting part and a handle for triggering the switch. One end of the handle is connected to the connecting part at an angle, and the other end of the handle passes through the channel. The connecting part is provided with the through hole.

7. The insurance component according to claim 4, characterized in that, The third limiting segment has a limiting groove at one end facing the connecting part, and the connecting part has a limiting protrusion that cooperates with the limiting groove.

8. The insurance component according to claim 6, characterized in that, The safety seat is provided with a second limiting rod, and the side of the connecting part opposite to the handle moves against the second limiting rod.

9. The insurance component according to claim 1, characterized in that, The inner wall of the safety seat is provided with a locking protrusion, which moves against the connection part of the safety handle.

10. A nail gun, characterized in that, The device includes a gun mount, a muzzle, a magazine, and a safety assembly as described in any one of claims 1 to 9. The gun mount is connected to the muzzle, the magazine is connected to the muzzle, the gun mount is provided with a first limiting rod, one end of the safety assembly is connected to an adjusting rod, and the other end of the safety assembly is located in front of the muzzle, bypassing the magazine.

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