Safe nailing structure for nailing tool

Abstract

The safe nailing structure comprises a gas energy storage mechanism, a lifting mechanism, a firing pin and a pin seat, a plurality of lifting tooth grooves are evenly formed in 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 fully guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of nail driving tools, and particularly relates to a safety nail driving structure for nail driving tools. Background Art

[0002] Lithium battery nail driving tools have significant advantages such as safety and portability, so they have been rapidly popularized and applied after their appearance. The lifting mechanism is an important working part in lithium battery nail driving tools. The existing lifting mechanisms of lithium battery nail driving tools mainly include a motor and a lifting wheel. The motor drives the lifting wheel to rotate, and through the transmission engagement between the lifting wheel and the tooth grooves on the striker, a push is formed. During the process of the striker being pushed, the piston is driven to complete the driving mechanism (i.e., the cylinder) to complete gas compression energy storage. After the gas compression energy storage is completed, the lifting wheel waits for the striker to be unlocked and continue to move, and then the striker performs an impact movement under the drive of the gas compression energy storage. Before the striker is unlocked after the gas compression energy storage is completed, the positioning of the striker depends on the lifting wheel.

[0003] In the existing technology, in order to improve the safety of use, a positioning and abutting structure is arranged on one side of the striker. Before the striker is unlocked after the gas compression energy storage is completed, the positioning and abutting structure positions the striker. For example, a Chinese patent document discloses a lithium battery fastener driving tool, patent number: CN219235219U. In this patent, an anti-impact pawl structure is disclosed, which can position the striker, but it only positions the striker before firing. Although it improves the safety of nail driving to a certain extent, if a nail jams during the firing process of the striker, at this time, the striker has no positioning mechanism, and it is very troublesome to remove the jammed nail. At the same time, it bears the pushing pressure of the gas compression energy storage. Therefore, it is also dangerous to remove the jammed nail in this case. It is very necessary to improve the defects existing in the use of the existing technical structure. Summary of the Invention

[0004] The purpose of the present invention is to provide a safety nail driving structure for nail driving tools to solve the problems raised in the above background art.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a safety nailing structure for a nailing tool, comprising a gas energy storage mechanism, a lifting mechanism, a firing pin, and a needle seat, wherein a plurality of lifting tooth grooves are evenly arranged on the firing pin, and a plurality of driving pins that cooperate with the lifting tooth grooves are arranged on the lifting wheel in the lifting mechanism; a safety positioning mechanism is also included, wherein a limit tooth, a reset device, and a driving device are arranged in the safety positioning mechanism, and the lifting mechanism can drive the limit tooth in the safety positioning mechanism through the driving device; a plurality of limit tooth grooves are arranged on the other side of the firing pin, and the plurality of limit tooth grooves are connected with the plurality of The lifting teeth are respectively arranged on both sides of the firing pin. As the lifting mechanism drives the firing pin to complete the energy storage of the gas energy storage mechanism, the limit tooth forms a locking position with the limit tooth at the end of one side of the firing pin under the action of the reset device. In the process of releasing the abutment between the driving pin and the lifting tooth on the lifting wheel before the firing pin is fired, the lifting mechanism drives the limit tooth and the limit tooth at the same time through the driving device to release the locking position. When the firing pin is stuck, the lifting wheel continues to rotate to release the drive of the limit tooth by the driving device, so that the limit tooth forms a locking position with one of the limit tooth on the side of the firing pin under the action of the reset device.

[0006] In the above-mentioned safety nailing structure for a nailing tool, the reset device is installed on the needle seat, and the needle seat is provided with a mounting slot for installing the reset device and a limit tooth, and the mounting slot is communicated with the needle slot on the needle seat, and the reset device includes a spring, a mounting pin, and an abutment pin, and the mounting pin and the abutment pin are fixedly mounted on the needle seat, and the spring is mounted on the mounting pin, and the two ends abut against the limit tooth and the abutment pin respectively, and the spring enables the limit tooth to maintain an elastic force against the side of the firing pin.

[0007] In the above-mentioned safety nailing structure for a nailing tool, the limit tooth is installed on the needle seat through a rotating column, the limit tooth is fixedly connected to the rotating column, the rotating column is rotatably connected to the needle seat, and the end of the rotating column is connected to the driving device.

[0008] In the above-mentioned safety nailing structure for a nailing tool, the driving device includes a main toggle tooth and a secondary toggle tooth. The main toggle tooth is connected to the rotating shaft in the lifting mechanism, and the secondary toggle tooth is fixedly connected to the end of the rotating column. As the lifting wheel rotates, the driving pin on it is released from the abutment against the lifting tooth groove on the striker. During this process, the main toggle tooth and the lifting wheel rotate synchronously with the rotating shaft, the main toggle tooth toggle the secondary toggle tooth, and the secondary toggle tooth drives the limit latch tooth to rotate synchronously through the rotating column, so that the limit latch tooth and the limit tooth groove are released from the jamming.

[0009] In the above-mentioned safety nailing structure for nailing tools, the ends of the main driving tooth and the auxiliary driving tooth are provided with meshing teeth, and the main driving tooth meshes with the teeth at the end of the auxiliary driving tooth through its own end as it rotates, so that the auxiliary driving tooth rotates.

[0010] In the above-mentioned safety nailing structure for a nailing tool, a shaft ring fixedly connected to the rotating shaft of the lifting mechanism is provided on the main driving tooth.

[0011] In the above-mentioned safety nailing structure for a nailing tool, the driving device includes a limit 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 remains in abutment with the linkage push block. As the lifting wheel rotates, the driving pin on it is released from the abutment with the lifting tooth groove on the striker. During this process, the limit top block and the lifting wheel rotate synchronously with the rotating shaft, the limit top block pushes the linkage push block through the push rod, and the linkage push block drives the limit teeth to rotate synchronously through the rotating column, so that the limit teeth and the limit tooth grooves are released.

[0012] In the above-mentioned safety nailing structure for a nailing tool, a rod groove is provided on the needle seat and is 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 be positioned and slid along the rod groove.

[0013] In the above-mentioned safety 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 slidingly positioning the push rod in the rod groove and preventing it from falling off.

[0014] In the above-mentioned safety nailing structure for a nailing tool, the position-limiting top block and the lifting wheel are designed as an integrated structure, and a top sliding inclined surface is provided on the position-limiting top block.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects: The present invention is provided with a plurality of lifting teeth grooves on the firing pin to cooperate with the safety positioning mechanism. When the lifting mechanism drives the firing pin to complete the energy storage of the gas energy storage mechanism, the limit teeth in the safety positioning mechanism are engaged with the limit teeth groove at the end of one side of the firing pin under the action of the reset device, thereby forming a safe positioning of the firing pin before firing; and the safety positioning mechanism can also cooperate with the lifting mechanism drive. In the process of releasing the abutment between the driving pin and the lifting teeth groove on the lifting wheel before the firing pin is fired, the lifting mechanism drives the limit teeth and the limit teeth groove to release the engagement through the driving device at the same time, thereby ensuring the normal operation of the firing pin nailing. When the firing pin is stuck, the lifting wheel continues to rotate to release the drive of the limit teeth by the driving device, so that the limit teeth are engaged with one of the limit teeth grooves on one side of the firing pin under the action of the reset device, thereby preventing the firing pin from firing during the process of removing the stuck nail. Compared with the prior art, the present invention fully guarantees the safety of the firing pin before firing and the operation of removing the stuck nail. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 , Figure 2are perspective views of Embodiment 1 of the present invention in two different directions; Figure 3 is an exploded view of Embodiment 1 of the present invention; Figure 4 is a perspective view of the needle base in Embodiment 1 of the present invention; Figure 5 is a schematic diagram of the state of Embodiment 1 of the present invention (after energy storage is completed); Figure 6 、 Figure 7 are schematic diagrams of two states in the process of Embodiment 1 of the present invention (when the firing pin is released from positioning); Figure 8 is a schematic diagram of the state of Embodiment 1 of the present invention (when a staple appears); Figure 9 、 Figure 10 are perspective views of Embodiment 2 of the present invention in two different directions; Figure 11 is an exploded view of Embodiment 2 of the present invention; Figure 12 is a perspective view of the push rod in Embodiment 2 of the present invention; Figure 13 is a schematic diagram of the state of Embodiment 2 of the present invention (after energy storage is completed); Figure 14 、 Figure 15 are schematic diagrams of two states in the process of Embodiment 2 of the present invention (when the firing pin is released from positioning); Figure 16 is a schematic diagram of the state of Embodiment 2 of the present invention (when a staple appears). Detailed Embodiment

[0017] The present invention will be further described in conjunction with the accompanying drawings. Embodiment

[0018] Please refer to Figures 1 to 8 , the present invention provides a safety nail driving structure for a nail driving tool, including a gas energy storage mechanism 1, a lifting mechanism 2, a firing pin 3, and a needle base 4. The gas energy storage mechanism 1 has a first air chamber 1-1, a second air chamber 1-2, and an opening and closing valve 1-3 for controlling the on-off of the two air chambers. The gas energy storage mechanism 1 also has an opening and closing link device 1-4 for controlling the movement of the opening and closing valve. The opening and closing link device is controlled to move through the lifting mechanism 2, and the lifting mechanism 2 is drivingly connected to the motor in the nail driving tool.

[0019] A plurality of lifting tooth grooves 5 are evenly arranged on the striker 3, and a plurality of limiting tooth grooves 10 are arranged on the other side of the striker 3. The plurality of limiting tooth grooves and the plurality of lifting tooth grooves are respectively arranged on both sides of the striker, and a plurality of driving pins 6 for driving and cooperating with the lifting tooth grooves 5 are arranged on the lifting wheel 2-1 in the lifting mechanism 2; the present invention also includes a safety positioning mechanism, in which a limiting locking tooth 7, a reset device 8 and a driving device 9 are arranged.

[0020] 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 limit latch 7. The mounting slot 11 is communicated with the needle slot 4-1 on the needle seat 4. The reset device 8 includes a spring 12, a mounting pin 13, and abutment pin 14. The mounting pin 13 and the abutment 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 limit latch 7 and the abutment pin 14 respectively. The spring 12 enables the limit latch 7 to maintain an elastic force to abut against the side of the striker 3.

[0021] The driving device 9 includes a main shifting tooth 16 and a secondary shifting tooth 17. The main shifting tooth 16 is connected to the rotating shaft 2-2 in the lifting mechanism 2. The main shifting tooth 16 and the lifting wheel 2-1 rotate synchronously with the rotating shaft 2-2. The main shifting tooth 16 shifts the secondary shifting tooth 17. The secondary shifting tooth 17 is fixedly connected to the end of the rotating column 15. As the lifting wheel 2-1 rotates, the driving pin 6 thereon is released from the abutment with the lifting tooth groove 5 on the striker 3.

[0022] When the system receives the firing signal, that is, in the process when the firing pin 3 is ready to fire and before it is fired, the motor in the nailing tool works, and the motor drives the lifting mechanism 2 to rotate, and the driving pin 6 on the lifting wheel 2-1 in the lifting mechanism 2 is released from the lifting tooth groove 5 on the firing pin 3. At the same time, the lifting mechanism 2 drives the opening and closing connecting rod device 1-4 to open the opening and closing valve 1-3, and the high-pressure gas in the second air chamber 1-2 enters the first air chamber 1-1. At the same time, when the driving pin 6 is released from the lifting tooth groove 5, the opening and closing valve 1-3 is opened. During the process, since the main shifting tooth 16 and the lifting wheel 2-1 rotate synchronously, the main shifting tooth 16 shifts the auxiliary shifting tooth 17. Before the limit latch 7 rotates, the lifting mechanism will first drive the firing pin to leave a clearance space between the limit latch 7 and the limit tooth groove 10. Then the auxiliary shifting tooth 17 drives the limit latch 7 to rotate through the rotating column 15, thereby driving the limit latch 7 and the limit tooth groove 10 to release the position. The main shifting tooth 16 shifts the auxiliary shifting tooth 17 to the shifting travel interval, and the firing pin completes the firing. Then the cycle works, the lifting mechanism 2 continues to rotate, the driving 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 completes driving the firing pin 3 backward, the high-pressure gas in the gas energy storage mechanism 1 also completes the compression energy storage, the opening and closing valve 1-3 is closed, and the high-pressure gas is sealed in the second air chamber 1-2. At this time, the driving 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 limit tooth 7 is positioned with the last limit 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 firing pin 3 is stuck, the lifting wheel 2-1 continues to rotate, and the main shifting tooth 16 releases the driving range of the auxiliary shifting tooth 17, thereby releasing the drive to the limit latch 7, so that the limit latch 7 is engaged with one of the limit tooth grooves 10 on one side of the firing pin 3 under the action of the spring in the reset device 8, thereby improving the safety during the removal of the staple. After the staple is removed, the gas energy storage mechanism 1 is reset and stored again to perform a cycle.

[0023] Specifically, the limit latch 7 is installed on the needle seat 4 through the rotating column 15 , the limit latch 7 is fixedly connected to the rotating column 15 , the rotating column 15 is rotatably connected to the needle seat 4 , and the end of the rotating column 15 is connected to the driving device 9 .

[0024] Furthermore, the ends of the main shifting tooth 16 and the auxiliary shifting tooth 17 are provided with meshing shifting teeth 18 , and the main shifting tooth 16 meshes with the shifting teeth 18 at the ends of the auxiliary shifting teeth 17 through its own ends as it rotates, so that the auxiliary shifting teeth 17 rotate.

[0025] Preferably, the main shifting tooth 16 is provided with a shaft ring 19 which is fixedly connected to the rotating shaft 2 - 2 of the lifting mechanism 2 . Example

[0026] See also Figures 9 to 16The present invention provides a safety nailing structure for a nailing tool. Different from the first embodiment, the driving device 9 includes a limit top block 20, a push rod 21, and a linkage push block 22. Preferably, the limit top block 20 and the lifting wheel 2-1 are designed as an integrated structure. A top sliding slope 20-1 is provided on the limit top block 20. The push rod 21 is connected to the needle seat 4 and can slide in a directional manner relative to the needle seat 4. One end of the push rod 21 always remains in contact with the linkage push block 22.

[0027] Furthermore, the needle seat 4 is provided with a rod groove 23 and connected with 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 be positioned and slid along the rod groove 23 .

[0028] When the system receives the firing signal, the energy storage work of the lifting mechanism 2 in the nailing tool and the contact limit work of the driving pin 6 of the firing pin 3 are the same as the working principles of the first embodiment, except that, in the process of the driving pin 6 and the lifting tooth groove 5 being released from the abutment, since the limit top block 20 and the lifting wheel 2-1 rotate synchronously, the limit top block 20 slowly pushes the push rod 21 through the push sliding inclined surface 20-1. The push rod 21 slides along the rod groove 23 in a directional manner and pushes the linkage push block 22 at the same time, and then the linkage push block 22 drives the limit clamping tooth 7 to rotate through the rotating column 15, thereby driving the limit clamping tooth 7 and the limit tooth groove 10 to release the clamping position, and the limit top block 20 pushes the travel interval of the push rod 21, and the firing pin is completed. When the firing pin 3 is stuck, the lifting wheel 2-1 continues to rotate, and the limit push block 20 releases the push range of the push rod 21, thereby releasing the drive to the limit tooth 7, so that the limit tooth 7 is engaged with one of the limit tooth grooves 10 on one side of the firing pin 3 under the action of the spring in the reset device 8, thereby improving the safety during the removal of the staple. After the staple is removed, the gas energy storage mechanism 1 is reset and stored again to perform a cycle.

[0029] 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; thereby improving the sliding stability of the push rod 21.

[0030] The above is a detailed introduction to a safety nailing structure for a nailing tool provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the technical solution disclosed by the present invention. At the same time, for a person skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as a limitation of the present invention.

Claims

1. A safety nail driving structure for a nail driving tool, comprising a gas energy storage mechanism (1), a lifting mechanism (2), a firing pin (3), and a pin base (4). A plurality of lifting tooth grooves (5) are evenly arranged on the firing pin (3), and a plurality of driving pins (6) drivingly engaged with the lifting tooth grooves (5) are arranged on a lifting wheel (2-1) in the lifting mechanism (2); it is characterized in that: The device also includes a safety positioning mechanism, wherein a limit latch (7), a reset device (8), and a drive device (9) are provided in the safety positioning mechanism, and the lifting mechanism (2) can drive the limit latch (7) in the safety positioning mechanism through the drive device (9); a plurality of limit tooth grooves (10) are provided on the other side of the striker (3), and as the lifting mechanism (2) drives the striker (3) to complete the energy storage of the gas energy storage mechanism (1), the limit latch (7) forms a limit tooth groove (10) with the limit tooth groove (10) at one end of the striker (3) under the action of the reset device (8). When the driving pin (6) on the lifting wheel (2-1) and the lifting tooth groove (5) are released from abutment before the firing pin (3) is fired, the lifting mechanism (2) drives the limiting tooth (7) and the limiting tooth groove (10) to release the blocking through the driving device (9); when the firing pin (3) is stuck, the lifting wheel (2-1) continues to rotate to release the driving of the driving device (9) on the limiting tooth (7), so that the limiting tooth (7) is blocked with one of the limiting tooth grooves (10) on one side of the firing pin (3) under the action of the resetting device (8).

2. The safety nail driving structure for a nail driving tool according to claim 1, wherein: The reset device (8) is mounted on the needle seat (4). The needle seat (4) is provided with a mounting slot (11) for mounting the reset device (8) and a limit clamping tooth (7). The mounting slot (11) is communicated with the needle slot (4-1) on the needle seat (4). The reset device (8) comprises a spring (12), a mounting pin (13), and an abutting pin (14). The mounting pin (13) and the abutting pin (14) are fixedly mounted on the needle seat (4). The spring (12) is mounted on the mounting pin (13), and its two ends abut against the limit clamping tooth (7) and the abutting pin (14) respectively. The spring (12) enables the limit clamping tooth (7) to maintain an elastic force abutting against the side of the striker (3).

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

4. The safety nail driving structure for a nail driving tool according to claim 3, wherein: The driving device (9) comprises a main shifting tooth (16) and a secondary shifting tooth (17). The main shifting tooth (16) is connected to the rotating shaft (2-2) in the lifting mechanism (2), and the secondary shifting tooth (17) is fixedly connected to the end of the rotating column (15). As the lifting wheel (2-1) rotates, the driving pin (6) thereon and the lifting tooth groove (5) on the striker (3) are released from abutment. During this process, the main shifting tooth (16) and the lifting wheel (2-1) rotate synchronously with the rotating shaft (2-2), and the main shifting tooth (16) shifts the secondary shifting tooth (17). The secondary shifting tooth (17) drives the limiting latching tooth (7) to rotate synchronously through the rotating column (15), so that the limiting latching tooth (7) and the limiting tooth groove (10) are released from a position.

5. The safety nail driving structure for a nail driving tool according to claim 4, characterized in that: The ends of the main shifting tooth (16) and the auxiliary shifting tooth (17) are provided with meshing shifting teeth (18); as the main shifting tooth (16) rotates, its own end meshes with the shifting tooth (18) at the end of the auxiliary shifting tooth (17), causing the auxiliary shifting tooth (17) to rotate.

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

7. The safety nail driving structure for a nail driving tool according to claim 3, wherein: The driving device (9) comprises a limit 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) in a directional manner. 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) thereon and the lifting tooth groove (5) on the striker (3) are released from abutment. During this process, the limit top block (20) and the lifting wheel (2-1) rotate synchronously with the rotating shaft (2-2). The limit top block (20) pushes the linkage push block (22) through the push rod (21). The linkage push block (22) drives the limit latching tooth (7) to rotate synchronously through the rotating column (15), so that the limit latching tooth (7) and the limit tooth groove (10) are released from a position.

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

9. The safety nail driving structure for a nail driving tool according to claim 8, characterized in that: The rod groove (23) is fixedly mounted with a rod pin (25), and the push rod (21) is provided with a pin groove (26), and the rod pin (25) is correspondingly located in the pin groove (26), thereby slidably positioning the push rod (21) in the rod groove (23) and preventing it from falling off.

10. The safety nail driving structure for a nail driving tool according to claim 7, characterized in that: The limiting top block (20) and the lifting wheel (2-1) are designed as an integral structure, and a top sliding inclined surface (20-1) is provided on the limiting top block (20).

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