Adjustable firing pin capable of freely shrinking

Abstract

The utility model discloses an adjustable firing pin capable of freely shrinking, which comprises a plunger disc and a firing pin connecting seat arranged at the center of the bottom end of the plunger disc, a firing pin top block is arranged at the center of the top end of the plunger disc, and a rod-shaped firing pin body is arranged at the bottom end of the firing pin connecting seat. The outer walls of the rod-shaped firing pin body, the firing pin connecting seat, the plunger disc and the firing pin ejector block are smooth and free of burrs, and the interior and the bottom end of the rod-shaped firing pin body are connected with a telescopic adjustable device. The telescopic adjustable device and the rod-shaped firing pin body form a telescopic adjustable whole, and the telescopic adjustable device can change the overall length of the rod-shaped firing pin body through adjustment, so that the use length of the firing pin can be flexibly changed according to different types of nail guns, and the firing pin can be suitable for various types of nail guns; in this way, the tedious operation that different types of firing pins need to be replaced for different types of nail guns can be omitted.

Description

Technical Field

[0001] The utility model belongs to the technical field related to the firing pin of a nail gun, and particularly relates to an adjustable firing pin that can freely contract. Background Technique

[0002] A nail gun is an important tool widely used in the construction and decoration industries. One of its core components is the firing pin. The design and performance of the firing pin directly affect the working efficiency and nailing accuracy of the nail gun. Traditional firing pins often have problems such as insufficient elasticity, difficult adjustment, and uneven firing force during firing, which not only reduces the working efficiency but also increases the operation risk. To improve this situation, an adjustable firing pin that can freely contract has been developed, which can flexibly adjust the firing force and stroke according to different working requirements. The structure of this firing pin is simple, with good adaptability and stability. It not only improves the overall performance of the nail gun but also meets the nailing requirements of various materials, thereby improving the working efficiency and reducing the labor cost. This technological innovation provides broader possibilities for the application of nail guns and promotes the development of related industries.

[0003] However, when the firing pin is installed in the nail gun for use, especially when a new firing pin replaces a damaged one in the nail gun, in many cases, the length of the new firing pin does not match the length of the original firing pin. After the new firing pin is installed inside the nail gun, due to the length mismatch, it will affect the working efficiency and nailing accuracy of the nail gun. Moreover, traditional firing pins often have problems such as insufficient elasticity, difficult adjustment, and uneven firing force during firing, which not only reduces the working efficiency but also increases the operation risk. Content of the Utility Model

[0004] The purpose of the utility model is to provide an adjustable firing pin that can freely contract to solve the problems of insufficient elasticity, difficult adjustment, and uneven firing force often existing in traditional firing pins during firing as mentioned in the above background technique, which not only reduces the working efficiency but also increases the operation risk.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An adjustable firing pin that can freely contract, including a plunger disc and a firing pin connecting seat arranged at the center of the bottom end of the plunger disc. A firing pin top block is arranged at the center of the top end of the plunger disc. A rod-shaped firing pin body is arranged at the bottom end of the firing pin connecting seat. The outer walls of the rod-shaped firing pin body, the firing pin connecting seat, the plunger disc, and the firing pin top block are all smooth and free of burrs. An expansion and contraction adjustable device is connected inside and at the bottom end of the rod-shaped firing pin body;

[0006] The telescopic adjustable device includes a metal impact head, a telescopic adjustable screw rod, and a telescopic adjustable screw hole. A telescopic adjustable screw hole is provided inside the rod-shaped striker body, and the opening direction of the telescopic adjustable screw hole faces downward. The telescopic adjustable screw rod is threadedly inserted into the telescopic adjustable screw hole, and a metal impact head is provided at the bottom end of the telescopic adjustable screw rod.

[0007] Preferably, the diameter of the metal impact head is the same as the diameter of the rod-shaped striker body. The depth of the telescopic adjustable screw hole is greater than half of the length of the rod-shaped striker body, and the length of the telescopic adjustable screw rod is equal to the depth of the telescopic adjustable screw hole.

[0008] Preferably, the telescopic adjustable device further includes an adjustment jack, an internally threaded locking sleeve A, and an internally threaded locking sleeve B. Both the internally threaded locking sleeve A and the internally threaded locking sleeve B are threadedly sleeved on the outside of the telescopic adjustable screw rod. The internally threaded locking sleeve A is located above the internally threaded locking sleeve B, and adjustment jacks are provided inside the outer walls of both the internally threaded locking sleeve A and the internally threaded locking sleeve B.

[0009] Preferably, the outer diameters of both the internally threaded locking sleeve A and the internally threaded locking sleeve B are the same as the outer diameter of the rod-shaped striker body. After a metal rod is inserted into the adjustment jack, the internally threaded locking sleeve A and the internally threaded locking sleeve B can be driven to rotate clockwise and counterclockwise by the metal rod.

[0010] Preferably, when the telescopic adjustable screw rod rotates clockwise, it can move upward in the telescopic adjustable screw hole through the thread action. When the internally threaded locking sleeve A rotates counterclockwise, it can move upward on the outside of the telescopic adjustable screw rod through the thread action. When the internally threaded locking sleeve B rotates clockwise, it can move upward on the outside of the telescopic adjustable screw rod through the thread action.

[0011] Preferably, an inwardly recessed rubber ring groove is provided on the circular outer wall of the plunger disc, and a plunger rubber ring is sleeved in the rubber ring groove. The thickness of the plunger rubber ring is greater than the depth of the rubber ring groove.

[0012] Preferably, the centers of the rod-shaped striker body, the striker connection seat, the plunger disc, and the striker top block coincide on the same vertical line, and the diameter of the striker connection seat is greater than the diameter of the rod-shaped striker body.

[0013] Compared with the prior art, the present utility model provides an adjustable striker that can be freely retracted, having the following beneficial effects:

[0014] The utility model adds a novel telescopic adjustable device inside and at the bottom end of the striker. The telescopic adjustable device and the rod-shaped striker body form a telescopic adjustable whole, and the overall length of the rod-shaped striker body can be changed by adjustment through the telescopic adjustable device. In this way, the use length of the striker can be flexibly changed according to different nail gun models, so that the striker can be applied to a variety of different models of nail guns, which can save the cumbersome operation of replacing different models of strikers for different models of nail guns and also save the situation of needing to prepare a variety of different models of strikers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic plan view of a freely retractable and adjustable striker of the present utility model.

[0016] Figure 2 FIG. is a schematic plan view of a plunger disc and a plunger rubber ring of the present utility model.

[0017] Figure 3 FIG. is a schematic external plan view of the telescopic adjustable device of the present utility model.

[0018] Figure 4 FIG. is a schematic internal plan view of the telescopic adjustable device of the present utility model.

[0019] In the figure: 1. Telescopic adjustable device; 2. Rod-shaped striker body; 3. Striker connection seat; 4. Plunger disc; 5. Striker top block; 6. Rubber ring groove; 7. Plunger rubber ring; 8. Metal impact head; 9. Telescopic adjustable screw; 10. Adjusting jack; 11. Internal thread locking sleeve A; 12. Internal thread locking sleeve B; 13. Telescopic adjustable screw hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] The present utility model provides as Figures 1-4An adjustable firing pin that can be freely retracted is shown, including a plunger disc 4 and a firing pin connecting seat 3 provided at the center of the bottom end of the plunger disc 4. The plunger disc 4 has a strong structure and can withstand high pressure and impact force, improving the overall stability and service life of the nail gun, ensuring reliability even under high-intensity operations. The firing pin connecting seat 3 is reasonably designed, can effectively connect the firing pin body, and has a diameter larger than that of the rod-shaped firing pin body 2, providing better support, enhancing the stability of the firing pin, reducing deflection during high-speed firing, and improving the nailing accuracy. A firing pin top block 5 is provided at the center of the top end of the plunger disc 4. The design of the firing pin top block 5 ensures that the firing pin can impact the target at the best angle during firing, improving the firing efficiency and ensuring that the nail can be smoothly nailed into various materials. A rod-shaped firing pin body 2 is provided at the bottom end of the firing pin connecting seat 3. The rod-shaped design enables the firing pin to move smoothly, and it is smooth and burr-free, reducing friction, enhancing the firing speed and effect, reducing wear, and extending the service life. The outer walls of the rod-shaped firing pin body 2, the firing pin connecting seat 3, the plunger disc 4, and the firing pin top block 5 are all smooth and burr-free. An inwardly concave rubber ring groove 6 is provided on the circular outer wall of the plunger disc 4. A plunger rubber ring 7 is sleeved in the rubber ring groove 6. The thickness of the plunger rubber ring 7 is greater than the depth of the rubber ring groove 6. The thickness of the rubber ring being greater than the depth of the rubber ring groove 6 can effectively provide an additional sealing effect, prevent gas leakage, ensure the stability of the working pressure, and improve the overall performance of the nail gun. The centers of the rod-shaped firing pin body 2, the firing pin connecting seat 3, the plunger disc 4, and the firing pin top block 5 coincide on the same vertical line. The diameter of the firing pin connecting seat 3 is greater than the diameter of the rod-shaped firing pin body 2.

[0022] As Figure 1 , Figure 3 and Figure 4As shown, a telescopic adjustable device 1 is connected inside and at the bottom end of the rod-shaped striker body 2. The telescopic adjustable device 1 includes a metal impact head 8, a telescopic adjustable screw rod 9, and a telescopic adjustable screw hole 13. A telescopic adjustable screw hole 13 is provided inside the rod-shaped striker body 2, and the opening direction of the telescopic adjustable screw hole 13 is downward. The telescopic adjustable screw rod 9 is threadedly inserted into the telescopic adjustable screw hole 13. A metal impact head 8 is provided at the bottom end of the telescopic adjustable screw rod 9. The diameter of the metal impact head 8 is the same as the diameter of the rod-shaped striker body 2. The depth of the telescopic adjustable screw hole 13 is greater than half of the length of the rod-shaped striker body 2. The length of the telescopic adjustable screw rod 9 is equal to the depth of the telescopic adjustable screw hole 13. The telescopic adjustable device 1 further includes an adjustment jack 10, an internal thread locking sleeve A 11, and an internal thread locking sleeve B 12. Both the internal thread locking sleeve A 11 and the internal thread locking sleeve B 12 are threadedly sleeved on the outside of the telescopic adjustable screw rod 9. The internal thread locking sleeve A 11 is located above the internal thread locking sleeve B 12. Adjustment jacks 10 are provided inside the outer walls of both the internal thread locking sleeve A 11 and the internal thread locking sleeve B 12. The outer diameters of both the internal thread locking sleeve A 11 and the internal thread locking sleeve B 12 are the same as the outer diameter of the rod-shaped striker body 2. After a metal rod is inserted into the adjustment jack 10, the internal thread locking sleeve A 11 and the internal thread locking sleeve B 12 can be rotated clockwise and counterclockwise by the metal rod. When the telescopic adjustable screw rod 9 rotates clockwise, it can move upward in the telescopic adjustable screw hole 13 through the thread action. When the internal thread locking sleeve A 11 rotates counterclockwise, it can move upward on the outside of the telescopic adjustable screw rod 9 through the thread action. When the internal thread locking sleeve B 12 rotates clockwise, it can move upward on the outside of the telescopic adjustable screw rod 9 through the thread action.

[0023] As Figure 1 , Figure 3 and Figure 4As shown, when the length of the rod-shaped telescopic firing pin cannot reach the expected length after being installed inside the nail gun, the firing pin needs to be removed from the nail gun at this time, and the overall length of the rod-shaped firing pin body 2 can be changed by adjusting the telescopic adjustable device 1 so that the service length after adjustment can fully match the nail gun. When it is necessary to increase the overall service length of the rod-shaped firing pin body 2, first, the metal rod needs to be inserted into the adjustment jack 10 inside the internally threaded locking sleeve B12, and then the internally threaded locking sleeve B12 is driven to rotate counterclockwise by the metal rod, so that the internally threaded locking sleeve B12 moves downward outside the telescopic adjustable screw rod 9. Then, the metal rod is inserted into the adjustment jack 10 inside the internally threaded locking sleeve A11 and drives the internally threaded locking sleeve A11 to rotate clockwise, so that the internally threaded locking sleeve A11 moves downward outside the telescopic adjustable screw rod 9. In this way, the internally threaded locking sleeve A11 can be changed from the state of tightly pressing against the outer wall of the bottom end of the rod-shaped firing pin body 2 to a separated state. Then, hold the metal impact head 8 and drive the telescopic adjustable screw rod 9 to rotate counterclockwise, so that the telescopic adjustable screw rod 9 moves downward through the telescopic adjustable screw hole 13. This will increase the distance between the metal impact head 8 and the rod-shaped firing pin body 2, thereby achieving an increase in the overall service length of the rod-shaped firing pin body 2 and reaching the sum of the service lengths. To reverse the above-mentioned internally threaded locking sleeve A11 and internally threaded locking sleeve B12, when the top end of the internally threaded locking sleeve A11 tightly presses against the outer wall of the bottom end of the rod-shaped firing pin body 2, it will prevent the telescopic adjustable screw rod 9 from rotating, thereby locking the length in the current state. And when the internally threaded locking sleeve B12 tightly presses against the outer wall of the bottom end of the internally threaded locking sleeve A11, it will prevent the internally threaded locking sleeve A11 from rotating, thereby being able to play a secondary locking role on the rod-shaped firing pin body 2, and thus being able to lock the metal impact head 8 in the current adjusted position. At this time, a complete firing pin is formed between the metal impact head 8 and the rod-shaped firing pin body 2, so that it can be applicable to a variety of different nail guns after adjustment.

[0024] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable firing pin that can freely contract, comprising a plunger disc (4) and a firing pin connection seat (3) arranged at the center of the bottom end of the plunger disc (4), a firing pin top block (5) is arranged at the center of the top end of the plunger disc (4), a rod-shaped firing pin body (2) is arranged at the bottom end of the firing pin connection seat (3), and it is characterized in that: The outer walls of the rod-shaped striker body (2), the striker connecting seat (3), the plunger disc (4) and the striker top block (5) are all smooth and burr-free. An adjustable telescopic device (1) is connected inside and at the bottom end of the rod-shaped striker body (2). The adjustable telescopic device (1) includes a metal impact head (8), an adjustable telescopic screw (9) and an adjustable telescopic screw hole (13). An adjustable telescopic screw hole (13) is provided inside the rod-shaped striker body (2), and the opening direction of the adjustable telescopic screw hole (13) is downward. The adjustable telescopic screw (9) is threadedly inserted into the adjustable telescopic screw hole (13), and the bottom end of the adjustable telescopic screw (9) is provided with a metal impact head (8).

2. The adjustable striker capable of freely contracting according to claim 1, wherein: The diameter of the metal impact head (8) is the same as the diameter of the rod-shaped striker body (2). The depth of the adjustable telescopic screw hole (13) is greater than half of the length of the rod-shaped striker body (2). The length of the adjustable telescopic screw (9) is equal to the depth of the adjustable telescopic screw hole (13).

3. The adjustable firing pin capable of freely contracting according to claim 2, characterized in that: The adjustable telescopic device (1) further includes an adjustment jack (10), an internal thread locking sleeve A (11) and an internal thread locking sleeve B (12). The internal thread locking sleeve A (11) and the internal thread locking sleeve B (12) are both threadedly sleeved on the outside of the adjustable telescopic screw (9). The internal thread locking sleeve A (11) is located above the internal thread locking sleeve B (12). Adjustment jacks (10) are provided inside the outer walls of the internal thread locking sleeve A (11) and the internal thread locking sleeve B (12).

4. The adjustable striker capable of freely contracting according to claim 3, characterized in that: The outer diameters of the internal thread locking sleeve A (11) and the internal thread locking sleeve B (12) are both the same as the outer diameter of the rod-shaped striker body (2). After a metal rod is inserted into the adjustment jack (10), the internal thread locking sleeve A (11) and the internal thread locking sleeve B (12) can be driven to rotate clockwise and counterclockwise by the metal rod.

5. An adjustable firing pin capable of freely contracting according to claim 4, characterized in that: When the adjustable telescopic screw (9) rotates clockwise, it can move upward in the adjustable telescopic screw hole (13) through the thread action. When the internal thread locking sleeve A (11) rotates counterclockwise, it can move upward on the outside of the adjustable telescopic screw (9) through the thread action. When the internal thread locking sleeve B (12) rotates clockwise, it can move upward on the outside of the adjustable telescopic screw (9) through the thread action.

6. The adjustable striker capable of freely contracting according to claim 1, wherein: A rubber ring groove (6) recessed inward is provided on the circular outer wall of the plunger disc (4). A plunger rubber ring (7) is sleeved in the rubber ring groove (6). The thickness of the plunger rubber ring (7) is greater than the depth of the rubber ring groove (6).

7. The adjustable firing pin capable of freely contracting according to claim 1, characterized in that: The centers of the rod-shaped striker body (2), the striker connecting seat (3), the plunger disc (4) and the striker top block (5) are all coincident on the same vertical line. The diameter of the striker connecting seat (3) is greater than the diameter of the rod-shaped striker body (2).

Images