Safe nailing structure for nailing tool

Abstract

The utility model discloses a safe nailing structure for a nailing tool, which comprises a gas energy storage mechanism, a lifting mechanism, a firing pin and a pin seat, a plurality of lifting tooth sockets are uniformly arranged on the firing pin, and a plurality of driving pins are arranged on a lifting wheel in the lifting mechanism; the safety positioning mechanism is internally provided with a limiting latch, a resetting device and a driving device; a plurality of limiting tooth grooves are formed in the other side of the firing pin, the limiting clamping teeth and the limiting tooth grooves in the end of one side of the firing pin form a clamping position under the action of a reset device, and in the process that the driving pin on the lifting wheel and the lifting tooth grooves are released from abutting, the lifting mechanism drives the limiting clamping teeth and the limiting tooth grooves to release the clamping position at the same time through a driving device; and when the firing pin is clamped, the lifting wheel continues to rotate to relieve driving of the driving device to the limiting clamping teeth, so that the limiting clamping teeth and one limiting tooth groove in one side of the firing pin form a clamping position under the action of the reset device. The safety of staple bolt removal operation before firing of the firing pin is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of nailing tools, and specifically relates to a safe nailing structure for nailing tools. Background Technology

[0002] Lithium-ion battery-powered nailing tools have significant advantages such as safety and portability, leading to their rapid adoption after their emergence. The lifting mechanism is a crucial component of these tools. Current lifting mechanisms primarily consist of a motor and a lifting wheel. The motor drives the lifting wheel to rotate, which in turn engages with the toothed drive on the impact pin to create a thrust. This thrust drives a piston, which in turn compresses and stores gas energy in the cylinder. After the gas compression and energy storage are complete, the lifting wheel waits to unlock the impact pin's drive mechanism. The impact pin then strikes the target under the influence of the stored gas energy. Before the impact pin's drive mechanism unlocks, the lifting wheel is responsible for positioning the impact pin.

[0003] In existing technologies, to improve safety, a positioning and abutment structure is set on one side of the firing pin. Before the gas compression and energy storage are completed and the firing pin is driven and unlocked, the positioning and abutment structure positions the firing pin. For example, Chinese patent literature discloses a lithium battery fastener driving tool, patent number: CN219235219U. This patent discloses an anti-impact pawl structure. The anti-impact pawl structure can position the firing pin, but only before the firing pin is fired. Although it improves the safety of nailing to a certain extent, if the nail gets stuck during the firing process, the firing pin has no mechanism to position it, making nail removal very difficult. At the same time, it bears the pushing pressure of gas compression and energy storage, so nail removal in this situation is also dangerous. It is necessary to improve the existing technology to address the defects in its use. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art and to provide a safe nailing structure for nailing tools.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a safe nailing structure for a nailing tool, comprising a gas storage mechanism, a lifting mechanism, a firing pin, and a nail seat. The firing pin is evenly provided with multiple lifting tooth grooves. The lifting mechanism has a lifting wheel with multiple driving pins that engage with the lifting tooth grooves. It also includes a safety positioning mechanism, which includes limit teeth, a reset device, and a driving device. The lifting mechanism can drive the limit teeth in the safety positioning mechanism via the driving device. Multiple limit tooth grooves are provided on the other side of the firing pin, and these grooves engage with... Multiple lifting grooves are respectively set on both sides of the firing pin. As the lifting mechanism drives the firing pin to complete the energy storage of the gas storage mechanism, the limiting tooth, under the action of the reset device, forms a locking position with the limiting groove on one side of the firing pin. Before the firing pin is fired, during the process of the driving pin on the lifting wheel releasing the abutment from the lifting groove, the lifting mechanism simultaneously drives the limiting tooth and the limiting groove to release the locking position through the driving device. When the firing pin gets stuck, the lifting wheel continues to rotate to release the driving device from the limiting tooth, so that the limiting tooth, under the action of the reset device, forms a locking position with one of the limiting grooves on one side of the firing pin.

[0006] In the aforementioned safety nailing structure for a nailing tool, the reset device is installed on the needle holder. The needle holder has a mounting slot for installing the reset device and the limiting tooth. The mounting slot communicates with the needle groove on the needle holder. The reset device includes a spring, a mounting pin, and a stop pin. The mounting pin and the stop pin are fixedly installed on the needle holder. The spring is installed on the mounting pin, and its two ends abut against the limiting tooth and the stop pin, respectively. The spring causes the limiting tooth to maintain an elastic force that abuts against the side of the firing pin.

[0007] In the aforementioned safety nailing structure for a nailing tool, the limiting tooth is mounted on the needle holder via a rotating column. The limiting tooth is fixedly connected to the rotating column, the rotating column is rotatably connected to the needle holder, and the end of the rotating column is connected to a driving device.

[0008] In the aforementioned safe nailing structure for a nailing tool, the driving device includes a main actuating tooth and a secondary actuating tooth. The main actuating tooth is connected to the rotating shaft in the lifting mechanism, and the secondary actuating tooth is fixedly connected to the end of the rotating column. As the lifting wheel rotates, the driving pin on it disengages from the lifting tooth groove on the striking pin. During this process, the main actuating tooth and the lifting wheel rotate synchronously with the rotating shaft, and the main actuating tooth actuates the secondary actuating tooth. The secondary actuating tooth drives the limiting tooth to rotate synchronously through the rotating column, thereby disengaging the limiting tooth from the limiting tooth groove.

[0009] In the aforementioned safe nailing structure for a nailing tool, the ends of the main actuating tooth and the auxiliary actuating tooth are provided with meshing teeth. As the main actuating tooth rotates, it meshes with the teeth at the end of the auxiliary actuating tooth through its own end, causing the auxiliary actuating tooth to rotate.

[0010] In the aforementioned safe nailing structure for a nailing tool, the main actuating tooth is provided with a shaft ring that is fixedly connected to the rotating shaft of the lifting mechanism.

[0011] In the aforementioned safe nailing structure for a nailing tool, the driving device includes a limiting top block, a push rod, and a linkage push block. The push rod is connected to the needle seat and can slide relative to the needle seat in a directional manner. One end of the push rod always abuts against the linkage push block. As the lifting wheel rotates, the driving pin on it disengages from the lifting tooth groove on the striking pin. During this process, the limiting top block and the lifting wheel rotate synchronously with the rotating shaft. The limiting top block pushes the linkage push block through the push rod. The linkage push block drives the limiting teeth to rotate synchronously through the rotating column, causing the limiting teeth to disengage from the limiting tooth groove.

[0012] In the aforementioned safe nailing structure for a nailing tool, the needle holder is provided with a rod groove and connected to a push rod cover plate. The push rod is matched and installed in the rod groove and positioned by the push rod cover plate. The push rod can slide and be positioned along the rod groove.

[0013] In the aforementioned safe nailing structure for a nailing tool, a rod pin is fixedly installed in the rod groove, and a pin groove is provided on the push rod. The rod pin is correspondingly located in the pin groove, thereby positioning the push rod in the rod groove and preventing it from falling off.

[0014] In the aforementioned safe nailing structure for a nailing tool, the limiting top block and the lifting wheel are designed as an integral structure, and the limiting top block is provided with a top sliding slope.

[0015] By adopting the above-described technical solution, this utility model has the following beneficial effects:

[0016] This invention features multiple lifting grooves on the firing pin that cooperate with a safety positioning mechanism. As the lifting mechanism drives the firing pin to complete the energy storage of the gas storage mechanism, the limiting teeth in the safety positioning mechanism, under the action of a reset device, engage with the limiting grooves on one side of the firing pin, thus achieving a safe positioning before firing. The safety positioning mechanism can also cooperate with the lifting mechanism. Before firing, as the driving pin on the lifting wheel disengages from the lifting grooves, the lifting mechanism, through a driving device, simultaneously drives the limiting teeth to disengage from the limiting grooves, ensuring the normal operation of the firing pin. When a nail gets stuck, the lifting wheel continues to rotate, releasing the driving device from the limiting teeth, causing the limiting teeth, under the action of the reset device, to engage with one of the limiting grooves on one side of the firing pin. This prevents the firing pin from firing during the nail removal process. Compared with existing technologies, this invention fully guarantees safety before firing and during the nail removal operation. Attached Figure Description

[0017] Figure 1 , Figure 2 These are perspective views of two different directions of Embodiment 1 of this utility model;

[0018] Figure 3 This is an exploded view of Embodiment 1 of this utility model;

[0019] Figure 4 This is a perspective view of the needle holder in Embodiment 1 of this utility model;

[0020] Figure 5 This is a schematic diagram of the state of Embodiment 1 of this utility model (energy storage completed);

[0021] Figure 6 , Figure 7 This is a schematic diagram of two states in the process of the first embodiment of this utility model (the firing pin releases its positioning);

[0022] Figure 8 This is a schematic diagram of the state of Embodiment 1 of this utility model (with a stuck pin).

[0023] Figure 9 , Figure 10 These are perspective views of two different directions of Embodiment 2 of this utility model;

[0024] Figure 11 This is an exploded view of Embodiment 2 of this utility model;

[0025] Figure 12 This is a perspective view of the push rod in Embodiment 2 of this utility model;

[0026] Figure 13 This is a schematic diagram of the state of Embodiment 2 of this utility model (energy storage completed);

[0027] Figure 14 , Figure 15 This is a schematic diagram of two states in the process of Embodiment 2 of this utility model (the firing pin releases its positioning);

[0028] Figure 16 This is a schematic diagram of the state of Embodiment 2 of this utility model (with a stuck pin). Detailed Implementation

[0029] The present invention will be further described in conjunction with the accompanying drawings. Example

[0030] Please see Figures 1 to 8This utility model provides a safe nailing structure for a nailing tool, including a gas storage mechanism 1, a lifting mechanism 2, a striking pin 3, and a pin seat 4. The gas storage mechanism 1 has a first gas chamber 1-1, a second gas chamber 1-2, and an on / off valve 1-3 for controlling the opening and closing of the two gas chambers. The gas storage mechanism 1 also has an on / off linkage device 1-4 for controlling the movement of the on / off valve. The on / off linkage device is controlled by the lifting mechanism 2, which is driven by a motor in the nailing tool.

[0031] The impact pin 3 is evenly provided with a plurality of lifting tooth grooves 5, and a plurality of limiting tooth grooves 10 are provided on the other side of the impact pin 3. The plurality of limiting tooth grooves and the plurality of lifting tooth grooves are respectively provided on both sides of the impact pin. The lifting wheel 2-1 in the lifting mechanism 2 is provided with a plurality of driving pins 6 that drive and cooperate with the lifting tooth grooves 5. The present invention also includes a safety positioning mechanism, which is provided with limiting teeth 7, a reset device 8, and a driving device 9.

[0032] The reset device 8 is installed on the needle holder 4. The needle holder 4 is provided with a mounting slot 11 for installing the reset device 8 and the limiting tooth 7. The mounting slot 11 communicates with the needle groove 4-1 on the needle holder 4. The reset device 8 includes a spring 12, a mounting pin 13, and abutment pin 14. The mounting pin 13 and abutment pin 14 are fixedly installed on the needle holder 4. The spring 12 is installed on the mounting pin 13, and its two ends abut against the limiting tooth 7 and the abutment pin 14 respectively. The spring 12 makes the limiting tooth 7 maintain an elastic force that abuts against the side of the striking pin 3.

[0033] The driving device 9 includes a main actuating tooth 16 and a secondary actuating tooth 17. The main actuating tooth 16 is connected to the rotating shaft 2-2 in the lifting mechanism 2. The main actuating tooth 16 and the lifting wheel 2-1 rotate synchronously with the rotating shaft 2-2. The main actuating tooth 16 actuates the secondary actuating tooth 17. The secondary actuating tooth 17 is fixedly connected to the end of the rotating column 15. As the lifting wheel 2-1 rotates, the driving pin 6 on it disengages from the lifting tooth groove 5 on the striker 3.

[0034] When the system receives the firing signal, that is, during the process of the firing pin 3 preparing to fire but before firing, the motor in the nail-driving tool operates, driving the lifting mechanism 2 to rotate. The drive pin 6 on the lifting wheel 2-1 in the lifting mechanism 2 disengages from the lifting tooth groove 5 on the firing pin 3. Simultaneously, the lifting mechanism 2 drives the opening and closing linkage device 1-4 to open the opening and closing valve 1-3, allowing high-pressure gas from the second air chamber 1-2 to enter the first air chamber 1-1. This disengagement of the drive pin 6 from the lifting tooth groove 5... During the process, since the main actuating tooth 16 and the lifting wheel 2-1 rotate synchronously, the main actuating tooth 16 actuates the auxiliary actuating tooth 17. Before the limiting tooth 7 rotates, the lifting mechanism will first drive the firing pin to leave clearance space between the limiting tooth 7 and the limiting tooth groove 10. Then, the auxiliary actuating tooth 17 drives the limiting tooth 7 to rotate through the rotating column 15, thereby driving the limiting tooth 7 to release the locking between the limiting tooth 7 and the limiting tooth groove 10. The main actuating tooth 16 actuates the auxiliary actuating tooth 17 within its stroke range, and the firing pin completes the firing. Then the cycle continues, the lifting mechanism 2 continues to rotate, the drive pin 6 on the lifting wheel 2-1 cooperates with the lifting tooth groove 5 on the firing pin 3 to drive the firing pin backward. As the lifting mechanism 2 drives the firing pin 3 backward, the high-pressure gas in the gas energy storage mechanism 1 also completes compression and energy storage. The opening and closing valve 1-3 closes, and the high-pressure gas is sealed in the second gas chamber 1-2. At this time, the drive pin 6 on the lifting wheel 2-1 is positioned with the last lifting tooth groove 5 on one side of the firing pin 3, and the limiting tooth 7 is positioned with the last limiting tooth groove 10 on one side of the firing pin 3, thereby ensuring the safety of the firing pin before the next firing. When the striker 3 gets stuck, the lifting wheel 2-1 continues to rotate, and the main actuating tooth 16 releases the driving range of the auxiliary actuating tooth 17, thereby releasing the driving of the limiting tooth 7. This allows the limiting tooth 7 to form a locking position with one of the limiting tooth grooves 10 on one side of the striker 3 under the action of the spring in the reset device 8, thereby improving the safety of the stuck pin removal process. After the stuck pin is removed, the gas energy storage mechanism 1 is reset and stored for cyclic operation.

[0035] Specifically, the limiting tooth 7 is mounted on the needle holder 4 via a rotating column 15. The limiting tooth 7 is fixedly connected to the rotating column 15, the rotating column 15 is rotatably connected to the needle holder 4, and the end of the rotating column 15 is connected to the driving device 9.

[0036] Furthermore, the ends of the main actuating tooth 16 and the auxiliary actuating tooth 17 are provided with meshing teeth 18. As the main actuating tooth 16 rotates, it meshes with the teeth 18 at the end of the auxiliary actuating tooth 17 through its own end, causing the auxiliary actuating tooth 17 to rotate.

[0037] Preferably, the main actuating tooth 16 is provided with a shaft ring 19 that is fixedly connected to the rotating shaft 2-2 of the lifting mechanism 2. Example

[0038] Please see Figures 9 to 16This utility model provides a safe nailing structure for nailing tools. Unlike embodiment one, the driving device 9 includes a limiting top block 20, a push rod 21, and a linkage push block 22. Preferably, the limiting top block 20 and the lifting wheel 2-1 are designed as an integral structure. The limiting top block 20 is provided with a top sliding inclined surface 20-1. The push rod 21 is connected to the needle seat 4 and can slide relative to the needle seat 4. One end of the push rod 21 always keeps in contact with the linkage push block 22.

[0039] Furthermore, the needle holder 4 is provided with a rod groove 23 and connected to a push rod cover plate 24. The push rod 21 is matched and installed in the rod groove 23 and positioned by the push rod cover plate 24. The push rod 21 can slide along the rod groove 23.

[0040] When the system receives the firing signal, the energy storage operation of the lifting mechanism 2 in the nail-driving tool and the contact limiting operation of the drive pin 6 of the firing pin 3 are the same as in Embodiment 1. The difference is that during the process of the drive pin 6 disengaging from the lifting tooth groove 5, since the limiting top block 20 and the lifting wheel 2-1 rotate synchronously, the limiting top block 20 slowly pushes the push rod 21 through the top sliding inclined surface 20-1. The push rod 21 slides along the rod groove 23 and simultaneously pushes the linkage push block 22. Then, the linkage push block 22 drives the limiting locking tooth 7 to rotate through the rotating column 15, thereby driving the limiting locking tooth 7 to disengage from the limiting tooth groove 10. The firing pin completes the firing within the stroke range of the pushing of the push rod 21 by the limiting top block 20. When the striker 3 gets stuck, the lifting wheel 2-1 continues to rotate, and the limiting top block 20 releases the pushing range of the push rod 21, thereby releasing the drive of the limiting tooth 7. This allows the limiting tooth 7 to form a locking position with one of the limiting tooth grooves 10 on one side of the striker 3 under the action of the spring in the reset device 8, thereby improving the safety of the stuck pin removal process. After the stuck pin is removed, the gas energy storage mechanism 1 is reset and stored for cyclic operation.

[0041] Furthermore, a rod pin 25 is fixedly installed in the rod groove 23, and a pin groove 26 is provided on the push rod 21. The rod pin 25 is correspondingly located in the pin groove 26, thereby positioning the push rod 21 in the rod groove 23 and preventing it from falling off; thus improving the sliding stability of the push rod 21.

[0042] The above provides a detailed description of a safe nailing structure for a nailing tool provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the technical solution disclosed in this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A safe nailing structure for a nailing tool, comprising a gas storage mechanism (1), a lifting mechanism (2), a striking pin (3), and a pin seat (4), wherein the striking pin (3) is uniformly provided with a plurality of lifting tooth grooves (5), and the lifting wheel (2-1) of the lifting mechanism (2) is provided with a plurality of driving pins (6) that drive and cooperate with the lifting tooth grooves (5); characterized in that: It also includes a safety positioning mechanism, which is equipped with a limit locking tooth (7), a reset device (8), and a drive device (9). At the same time, the lifting mechanism (2) can drive the limit locking tooth (7) in the safety positioning mechanism through the drive device (9). The other side of the striker (3) is provided with multiple limit tooth grooves (10). As the lifting mechanism (2) drives the striker (3) to complete the energy storage of the gas energy storage mechanism (1), the limit locking tooth (7) forms a groove (10) on one side of the striker (3) under the action of the reset device (8). During the process of the driving pin (6) on the lifting wheel (2-1) disengaging from the lifting tooth groove (5) before the firing pin (3) is fired, the lifting mechanism (2) simultaneously drives the limiting tooth (7) and the limiting tooth groove (10) to disengage through the driving device (9); when the firing pin (3) is stuck, the lifting wheel (2-1) continues to rotate to release the driving device (9) from driving the limiting tooth (7), so that the limiting tooth (7) forms a lock with one of the limiting tooth grooves (10) on one side of the firing pin (3) under the action of the reset device (8).

2. A safety driving structure for a driving tool according to claim 1, characterized in that: The reset device (8) is installed on the needle seat (4). The needle seat (4) is provided with a mounting slot (11) for installing the reset device (8) and the limiting tooth (7). The mounting slot (11) communicates with the needle groove (4-1) on the needle seat (4). The reset device (8) includes a spring (12), a mounting pin (13), and a stop pin (14). The mounting pin (13) and the stop pin (14) are fixedly installed on the needle seat (4). The spring (12) is installed on the mounting pin (13) and its two ends abut against the limiting tooth (7) and the stop pin (14) respectively. The spring (12) makes the limiting tooth (7) maintain an elastic force against the side of the striking pin (3).

3. A safe nailing structure for a nailing tool according to claim 1 or 2, characterized in that: The limiting tooth (7) is mounted on the needle seat (4) via a rotating column (15). The limiting tooth (7) is fixedly connected to the rotating column (15), and the rotating column (15) is rotatably connected to the needle seat (4). The end of the rotating column (15) is connected to the driving device (9).

4. A safety driving structure for a driving tool according to claim 3, characterized in that: The drive device (9) includes a main actuating tooth (16) and a secondary actuating tooth (17). The main actuating tooth (16) is connected to the rotating shaft (2-2) in the lifting mechanism (2). The secondary actuating tooth (17) is fixedly connected to the end of the rotating column (15). As the lifting wheel (2-1) rotates, the drive pin (6) on it and the lifting tooth groove (5) on the striker (3) are released from contact. During this process, the main actuating tooth (16) and the lifting wheel (2-1) rotate synchronously with the rotating shaft (2-2). The main actuating tooth (16) actuates the secondary actuating tooth (17). The secondary actuating tooth (17) drives the limiting tooth (7) to rotate synchronously through the rotating column (15), so that the limiting tooth (7) and the limiting tooth groove (10) are released from contact.

5. A safety driving structure for a driving tool as claimed in claim 4, wherein: The main actuating tooth (16) and the auxiliary actuating tooth (17) are provided with meshing teeth (18) at their ends. As the main actuating tooth (16) rotates, it meshes with the teeth (18) at the end of the auxiliary actuating tooth (17) through its own end, causing the auxiliary actuating tooth (17) to rotate.

6. A safety driving structure for a driving tool according to claim 4 or 5, characterized in that: The main actuating tooth (16) is provided with a shaft ring (19) that is fixedly connected to the rotating shaft (2-2) of the lifting mechanism (2).

7. A safety driving structure for a driving tool as claimed in claim 3, wherein: The driving device (9) includes a limiting top block (20), a push rod (21), and a linkage push block (22). The push rod (21) is connected to the needle seat (4) and can slide relative to the needle seat (4). One end of the push rod (21) always abuts against the linkage push block (22). As the lifting wheel (2-1) rotates, the driving pin (6) on it and the lifting tooth groove (5) on the impact pin (3) are released from abutment. During this process, the limiting top block (20) and the lifting wheel (2-1) rotate synchronously with the rotating shaft (2-2). The limiting top block (20) pushes the linkage push block (22) through the push rod (21). The linkage push block (22) drives the limiting tooth (7) to rotate synchronously through the rotating column (15), so that the limiting tooth (7) and the limiting tooth groove (10) are released from abutment.

8. A safety driving structure for a driving tool according to claim 7, characterized in that: The needle seat (4) is provided with a rod groove (23) and connected to a push rod cover plate (24). The push rod (21) is matched and installed in the rod groove (23) and positioned by the push rod cover plate (24). The push rod (21) can slide along the rod groove (23).

9. A safety driving structure for a driving tool as claimed in claim 8, wherein: The rod groove (23) is fixedly installed with a rod pin (25), and the push rod (21) is provided with a pin groove (26). The rod pin (25) is located in the pin groove (26), thereby positioning the push rod (21) in the rod groove (23) and preventing it from falling off.

10. The safety driving structure for a driving tool according to claim 7, wherein: The limiting top block (20) and the lifting wheel (2-1) are designed as an integral structure, and the limiting top block (20) is provided with a top sliding slope (20-1).

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