Striking pin safety structure of striking tool

Abstract

The utility model discloses a striker safety structure of a striking tool, which relates to the technical field of striking tools, and comprises a nail outlet trajectory and a striker matched with the nail outlet trajectory for working, the striker is movably connected with the nail outlet trajectory, a driving turntable is arranged on the nail outlet trajectory, and the driving turntable is connected with the striker. The driving rotary disc is used for driving the firing pin to do reciprocating linear motion on the nail discharging trajectory, and a safety assembly used for locking the firing pin is arranged on the nail discharging trajectory. According to the utility model, the safety assembly is arranged, the top and the bottom of the firing pin are respectively provided with the driving tooth part and the meshing tooth part, and the driving turntable can be meshed with the driving tooth part, so that the reciprocating rectilinear motion of the firing pin is realized; when the nail gun does not work, the position of the meshing tooth part can be locked through the abutting effect of the safety lock tongue and the meshing tooth part, namely, the position of the firing pin can be locked; through the arrangement, the firing pin can be locked by double insurance, so that the insurance effect of the nail gun is good, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of striking tools, in particular to a firing pin safety structure of a striking tool. Background Art

[0002] The firing pins of lithium battery nail guns currently on the market do not have insurance. When the nail gun is not working, that is, when the wheel is not working, if there is still gas in the cylinder, even if there is no driving air pressure on the firing pin, the remaining gas in the cylinder will push the firing pin forward, and the action of the firing pin will easily cause the nail gun to produce nails. The current solution at home and abroad is to let a steel pin on the wheel engage with the first tooth on the firing pin to lock the wheel position, but this method will cause the first steel pin on the wheel to be worn more during long-term use because the steel pin of the wheel is responsible for both transmission and insurance.

[0003] Based on this, our company has concluded through testing that after about 30,000 nailings, the first steel pin on the wheel will break. At this time, the pressure in the cylinder will be completely released, and the piston and firing pin will be ejected, pushing out the nails in the clip and causing personal injury to the construction workers. The specific instructions are as follows: When the wheel is driven by the motor to compress the air in the cylinder backward, the steel pin set on the wheel engages with the teeth of the firing pin. The steel pin on the wheel will slowly wear and become thinner as the number of nailing increases. When the steel pin is worn to a certain extent, it will break. At this time, the wheel can no longer engage with the firing pin. If there is high-pressure air remaining in the cylinder, the firing pin will be pushed out, and then the nails in the nail clip will be stimulated by the firing pin, causing harm to the construction workers.

[0004] For this reason, we propose a firing pin safety structure of a striking tool to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In the prior art, the first steel pin pair on the turntable meshes with the first tooth on the striker to lock the position of the wheel disc and serve as a safety function. However, during long-term use, this method will cause the first steel pin on the wheel disc to be more worn because the steel pin of the wheel disc is responsible for both transmission function and safety function. After long-term use, it will not serve as a safety function.

[0007] (II) Technical solution

[0008] In order to solve the above problems, the utility model provides the following technical solutions:

[0009] A firing pin safety structure of a striking tool comprises a nail-exiting trajectory and a firing pin adapted to work with the nail-exiting trajectory, wherein the firing pin is movably connected to the nail-exiting trajectory, a driving turntable is provided on the nail-exiting trajectory, the driving turntable is used to drive the firing pin to perform reciprocating linear motion on the nail-exiting trajectory, a safety component for locking the firing pin is provided on the nail-exiting trajectory, wherein: the safety component comprises a safety lock tongue movably provided on the nail-exiting trajectory, and a safety slider is movably provided on the safety lock tongue, when the firing pin is locked by using the safety component, the safety lock tongue is pressed against the meshing tooth portion at the bottom of the firing pin, and the safety slider is pressed against the driving turntable.

[0010] As a further solution of the utility model: a safety cylindrical pin is rotatably arranged on the nail-out trajectory, and the safety lock tongue is arranged on the safety cylindrical pin.

[0011] As a further solution of the utility model: the driving turntable is provided with a plurality of steel pins, and a protrusion is arranged between two adjacent steel pins. When the striker is locked by utilizing the safety assembly, the safety lock tongue is pressed against the meshing tooth portion at the bottom of the striker, and the safety slider is pressed against the protrusion on the driving turntable.

[0012] As a further solution of the utility model: the protrusion is arranged in an arc shape as a whole, and each end is arranged in a smooth curve transition.

[0013] As a further solution of the utility model: a safety spring is arranged on the safety lock tongue, and the safety spring is fixedly connected to the safety slide block.

[0014] As a further solution of the utility model: the nail ejection trajectory is provided with a mounting cavity, one end of the firing pin is provided with a piston, and the end of the firing pin away from the piston is slidably arranged on the mounting cavity.

[0015] As a further solution of the utility model: a driving tooth portion is arranged on the top of the striker, and the driving tooth portion and the meshing tooth portion are respectively located on two opposite sides of the striker.

[0016] As a further solution of the utility model: the safety lock tongue has an abutment end which is integrally formed and has a smooth curve transition, and the size of the abutment end is adapted to the distance between any two adjacent meshing teeth on the meshing tooth portion.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. Through the setting of the safety component, a driving tooth portion and an engaging tooth portion are respectively provided at the top and bottom of the striker, and the driving turntable can be engaged with the driving tooth portion to realize the reciprocating linear motion of the striker; the interference between the safety lock tongue and the engaging tooth portion can make the position of the engaging tooth portion be locked when the nail gun is not working, that is, the position of the striker will be locked; through the combination of the two settings, the striker can be locked by double insurance, so that the nail gun has a good insurance effect and ensures the safety of the staff;

[0020] 2. When nailing, the driving turntable rotates, and the steel pin on the driving turntable engages with the driving teeth on the top of the firing pin, so that the firing pin can drive the activity to move toward the inside of the cylinder. The safety slider and the protrusion are in a state of active conflict, and the safety lock tongue will not lock the meshing teeth at the bottom of the firing pin. In this process, the pre-filled air in the cylinder will be compressed. When compressed to the zero boundary point, the protrusion on the driving turntable will push open the safety slider on the firing pin. At this time, after the safety slider on the firing pin is pushed open, the safety lock tongue will be driven to give way, that is, the safety lock tongue will disengage from the meshing teeth at the bottom of the firing pin. At this time, the firing pin can move on the nailing trajectory to complete the nailing work;

[0021] 3. After a nail is shot, the motor will rotate the drive turntable through the gear box. The rotation of the drive turntable can pull the striker back through the drive teeth until the striker returns to its initial position. At this time, because the striker returns to the initial design position, the elastic action of the safety spring will push the contact end of the safety slider toward the meshing teeth at the bottom of the striker, that is, the safety lock tongue achieves the safety locking effect on the striker. Under this safety locking effect, even if the steel pin on the drive turntable breaks, the striker will not be pushed out by the air, avoiding personal injury to the construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 3 It is a schematic diagram of the overall structure of the nail ejection trajectory and the safety component in the utility model;

[0026] Figure 4 It is a schematic diagram of the top view of the driving turntable in the utility model;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the striker and the lock tongue in the utility model. Figure 1 ;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the striker and the lock tongue in the utility model. Figure 2 .

[0029] In the figure: 1. Nail ejection trajectory; 2. Firing pin; 3. Driving turntable; 301. Steel pin; 302. Protrusion; 4. Safety assembly; 401. Safety lock tongue; 402. Safety slider; 403. Engaging teeth; 404. Safety cylindrical pin; 405. Safety spring; 406. Driving teeth; 4011. Resistance end; 5. Piston. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] like Figure 1-Figure 6 As shown, a firing pin safety structure of a striking tool includes a nail ejecting trajectory 1 and a firing pin 2 adapted to work with the nail ejecting trajectory 1, the firing pin 2 is movably connected to the nail ejecting trajectory 1, specifically, a mounting cavity can be provided in the nail ejecting trajectory 1, a piston 5 is provided at one end of the firing pin 2, and the end of the firing pin 2 away from the piston 5 is slidably arranged on the mounting cavity.

[0032] like Figure 3-Figure 6 As shown, a driving turntable 3 is provided on the nail-exiting trajectory 1, and the driving turntable 3 is used to drive the firing pin 2 to make a reciprocating linear motion on the nail-exiting trajectory 1, and the linear motion of the firing pin 2 can realize the striking work of the nail. A safety assembly 4 for locking the firing pin 2 is provided on the nail-exiting trajectory 1, wherein: the safety assembly 4 includes a safety lock tongue 401 movably provided on the nail-exiting trajectory 1, and a safety slide block 402 is movably provided on the safety lock tongue 401. When the firing pin 2 is locked by using the safety assembly 4, the safety lock tongue 401 is pressed against the meshing tooth portion 403 at the bottom of the firing pin 2, and the safety slide block 402 is pressed against the driving turntable 3.

[0033] like Figure 2-Figure 3As shown, in order to realize the installation of the safety lock tongue 401 on the nail-exiting trajectory 1, a safety cylindrical pin 404 can be rotatably provided on the nail-exiting trajectory 1, and the safety lock tongue 401 is provided on the safety cylindrical pin 404. Further, the driving turntable 3 has a plurality of steel pins 301, and a protrusion 302 is provided between two adjacent steel pins 301. When the striker 2 is locked by the safety assembly 4, the safety lock tongue 401 presses against the meshing tooth portion 403 at the bottom of the striker 2, and the safety slider 402 presses against the protrusion 302 on the driving turntable 3. Preferably, the safety lock tongue 401 has an integrally formed and smooth curved contact end 4011, and the size of the contact end 4011 is adapted to the distance between any two adjacent meshing teeth on the meshing tooth portion 403.

[0034] like Figure 1-Figure 3 As shown, in order to facilitate smooth pressing and locking between the protrusion 302 and the safety slider 402 and releasing the pressing and locking, the protrusion 302 can be arranged in an arc shape as a whole, and each end is set with a smooth curve transition. At the same time, in order to allow the safety lock tongue 401 to self-reset after rotating a certain angle, a safety spring 405 can be provided on the safety lock tongue 401, and the safety spring 405 is fixedly connected to the safety slider 402. When the safety slider 402 rotates, the safety spring 405 will be compressed, and then after the corresponding action is released, under the elastic action of the safety spring 405, the safety slider 402 can be pressed against the meshing tooth portion 403 at the bottom of the striker 2.

[0035] like Figure 5-Figure 6 As shown, in order to realize the driving of the rotating disk 3 to drive the striker 2 , a driving tooth portion 406 may be provided on the top of the striker 2 , and the driving tooth portion 406 and the meshing tooth portion 403 are respectively located on two opposite sides of the striker 2 .

[0036] It should be noted that the motor, trigger switch, control panel, gear box, cylinder, etc. involved in the following description are all components of the striking tool. In order to reduce the complexity of this article, they will not be elaborated here.

[0037] The working principle of the utility model is as follows: when working, the muzzle of the gun at the left end of the nail-pulling trajectory 1 is pressed against the object to be fixed, and artificial force is applied to press the muzzle to the bottom. At this time, the trigger switch is pressed, the switch is energized, and the control panel will give a signal for the motor output shaft to rotate. The motor rotates the driving turntable 3 through the gear box. During the rotation, the steel pin 301 on the driving turntable 3 will engage with the driving tooth portion 406 at the top of the firing pin 2, so that the firing pin 2 can drive the activity to move toward the inside of the cylinder. The safety slider 402 is in an active conflicting state with the protrusion 302, and the safety lock tongue 401 will not lock the meshing tooth portion 403 at the bottom of the firing pin 2. During this process, the pre-filled air in the cylinder will be compressed. When compressed to the zero boundary point, the protrusion 302 on the driving turntable 3 will push open the safety slider 402 on the firing pin 2. At this time, after the safety slider 402 on the firing pin 2 is pushed open, the safety lock tongue 401 will be driven to give way, that is, the safety lock tongue 401 will be disengaged from the meshing tooth portion 403 at the bottom of the firing pin 2. At this time, the firing pin 2 can move on the nail trajectory 1 to complete the nailing work; the safety spring 405 will be deformed during this process. After a nail is shot, the motor will rotate the driving turntable 3 through the gear box, and the rotation of the driving turntable 3 can pull the firing pin 2 back through the driving tooth portion 406 until the firing pin 2 returns to the initial position. At this time, because the striker 2 returns to the initial design position, under the elastic action of the safety spring 405, the resistance end 4011 on the safety slider 402 will be pushed toward the meshing tooth portion 403 at the bottom of the striker 2, that is, the safety locking effect of the safety lock tongue 401 on the striker 2 is realized. Under this safety locking effect, even if the steel pin 301 on the driving turntable 3 breaks, the striker 2 will not be pushed out by the air.

[0038] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A firing pin safety structure of a striking tool, characterized in that: The invention comprises a nail-extracting trajectory (1) and a firing pin (2) adapted to work with the nail-extracting trajectory (1), wherein the firing pin (2) is movably connected to the nail-extracting trajectory (1), a driving rotary disk (3) is arranged on the nail-extracting trajectory (1), and the driving rotary disk (3) is used to drive the firing pin (2) to make reciprocating linear motion on the nail-extracting trajectory (1), and a safety component (4) for locking the firing pin (2) is arranged on the nail-extracting trajectory (1), wherein: the safety component (4) comprises a safety lock tongue (401) movably arranged on the nail-extracting trajectory (1), and a safety slide block (402) is movably arranged on the safety lock tongue (401), and when the firing pin (2) is locked by using the safety component (4), the safety lock tongue (401) and the meshing tooth portion (403) at the bottom of the firing pin (2) are pressed against each other, and the safety slide block (402) and the driving rotary disk (3) are pressed against each other.

2. A firing pin safety structure for a striking tool according to claim 1, characterized in that: A safety cylindrical pin (404) is rotatably arranged on the nail ejection trajectory (1), and the safety locking tongue (401) is arranged on the safety cylindrical pin (404).

3. A firing pin safety structure for a striking tool according to claim 2, characterized in that: The driving rotating disk (3) has a plurality of steel pins (301), and a protrusion (302) is provided between two adjacent steel pins (301). When the striker (2) is locked by using the safety assembly (4), the safety lock tongue (401) presses against the meshing tooth portion (403) at the bottom of the striker (2), and the safety slider (402) presses against the protrusion (302) on the driving rotating disk (3).

4. A firing pin safety structure for a striking tool according to claim 3, characterized in that: The protrusion (302) is arranged in an arc shape as a whole, and each end is arranged in a smooth curve transition.

5. A firing pin safety structure for a striking tool according to claim 4, characterized in that: A safety spring (405) is arranged on the safety lock tongue (401), and the safety spring (405) is fixedly connected to the safety slide block (402).

6. A firing pin safety structure for a striking tool according to any one of claims 1 to 5, characterized in that: The nail ejection trajectory (1) is provided with a mounting cavity, one end of the firing pin (2) is provided with a piston (5), and the end of the firing pin (2) away from the piston (5) is slidably arranged on the mounting cavity.

7. A firing pin safety structure for a striking tool according to claim 6, characterized in that: A driving tooth portion (406) is provided on the top of the striker (2), and the driving tooth portion (406) and the meshing tooth portion (403) are respectively located on two opposite sides of the striker (2).

8. A firing pin safety structure for a striking tool according to claim 7, characterized in that: The safety lock tongue (401) has an integrally formed abutment end (4011) with a smooth curve transition, and the size of the abutment end (4011) is adapted to the distance between any two adjacent meshing teeth on the meshing tooth portion (403).

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