TWI721611B - The firing pin of the nail gun - Google Patents

Abstract

This creation is the firing pin of a nail gun, which includes a shaft extending along a straight line and a cone-shaped part. The cone-shaped part is provided at one end of the rod body part, is conical, and extends coaxially with the rod body part; the diameter of the cross-section of the cone-shaped part decreases from the end connected to the rod body part toward the end away from the rod body part; The surface of the part contains a rough surface. By making the surface of the cone part to include a rough surface, when the cone part hits and penetrates into the tail of the nail, the rough surface of the cone will rub the shell of the nail tail and the gunpowder inside it more reliably. Furthermore, higher heat energy than the smooth surface of the prior art can be generated, so that the nitrocellulose can be reliably ignited to fire the nail, thereby improving the firing rate without reducing its safety.

Description

The firing pin of the nail gun

This creation relates to a hand tool, especially a nail gun fired with gunpowder (such as nitrocellulose or nitrocellulose, etc.).

Nail guns are generally used for decoration to assist users in nailing nails into hard places such as walls. Please refer to FIG. 7, FIG. 8, and FIG. 9, the tail section of the nail 91 is filled with gunpowder 911, and is loaded into the front end of the nail gun 92 to be fired with the tail section inward. The nail gun 92 includes a firing pin 921. When the user pulls off the trigger or pushes the nail gun forward or upward, the firing pin 921 will strike forward with its cone 9211 and penetrate the tail section of the nail 91. Thereby, the tapered portion 9211 of the striker 921 can use the frictional force at the time of impact to generate heat energy to ignite the gunpowder 911 filled in the tail section of the striker 91, and the striker 91 can therefore be driven forward into the wall surface.

Because nail 91 involves gunpowder, it is extremely important to consider safety factors in use. Because the traditional black powder is relatively unstable, it is easy to be ignited and fired accidentally when the nail 91 is stored or transported. Therefore, in the prior art nail gun, the gunpowder 911 used in the nail 91 is nitrocellulose-a kind of relatively stable Gunpowder that is not easy to ignite, so as to ensure the safety of the nail 91 during storage or transportation.

However, in the prior art nailing gun, the surface of the tapered portion 9211 of the firing pin 921 is a smooth surface. Therefore, when it penetrates into the tail of the nail 91, the frictional heat generated by it is often not enough to ignite the nitrocellulose. The nail 91 is fired, thereby forming a dud (not actually fired and can not be fired), and finally the nail 91 is wasted.

Therefore, under the premise of not changing its safety (that is, still using the stable and difficult-to-ignite nitrocellulose as the gunpowder 911), how to improve the firing success rate and reduce waste and cost has become a must in the field of nail gun technology. The problem.

In view of the aforementioned shortcomings and shortcomings of the prior art, this creation provides a firing pin for a nailing gun, which can improve the firing without reducing its safety (that is, using the stable and difficult-to-ignite nitrocellulose as the gunpowder). rate.

In order to achieve the above-mentioned creative purpose, the technical means used in this creation is to design a firing pin of a nail gun, which includes: a rod body which extends along a straight line; and a cone-shaped part which is arranged at one end of the rod body. , And extend coaxially with the shaft portion; the diameter of the cross-section of the tapered portion decreases from the end connected to the shaft portion toward the end away from the shaft portion; the surface of the tapered portion includes a rough surface, the roughness The surface is located on the ring side of the cone.

The advantage of this creation is that by making the surface of the cone part include a rough surface, when the cone part hits and penetrates into the tail of the nail, the rough surface of the cone will rub the shell of the nail more reliably. And the gunpowder inside can generate higher heat energy than the smooth surface of the prior art, so that the nitrocellulose can be surely ignited to fire the nail. In this way, this creation does not reduce its safety (i.e. the stable and difficult to ignite nitrocellulose is still used as the gunpowder) while increasing the firing rate, thereby reducing the cost and waste of duds.

Furthermore, in the firing pin of the nailing gun, the rough bread of the cone-shaped portion contains a thread.

Furthermore, in the firing pin of the nailing gun, the rough surface of the cone-shaped portion is a sandpaper surface.

Furthermore, in the firing pin of the nailing gun, the rough bread of the tapered portion contains a plurality of ring flanges, which are parallel to each other and are arranged at intervals along the axial direction of the tapered portion.

Furthermore, in the firing pin of the nailing gun, the ring flanges protrude at the same distance from the surface of the cone.

Furthermore, in the firing pin of the nailing gun, the rough bread of the cone-shaped part contains a plurality of bumps, which are arranged irregularly on the surface of the cone-shaped part.

Furthermore, in the firing pin of the nailing gun, the shapes of the protrusions are different from each other.

Furthermore, in the firing pin of the nailing gun, the end surface of the cone-shaped part at the connection point with the shaft part is smaller than the end surface of the shaft part at the connection point with the cone-shaped part.

Furthermore, in the firing pin of the nailing gun, the rod body part and the tapered part are integrally formed.

Furthermore, in the firing pin of the nailing gun, the surface of the tapered portion further includes a smooth surface; the smooth surface is connected to the rough surface, and the smooth surface is connected to the tapered portion away from the shaft portion One end of the rod, and the rough surface is connected to one end of the conical part connected to the rod part.

10: Rod body

20: Cone

21: Oblique thread

30: Class side

20A: Cone

21A: sandpaper surface

20B: Cone

21B: Ring flange

20C: Cone

21C: bump

10D: Rod body

20D: Cone

21D: Smooth surface

22D: rough surface

91: Nail

911: Gunpowder

92: Nail Gun

921: firing pin

9211: Cone

Figure 1 is a perspective view of the first embodiment of this creation.

Fig. 2 is a partial enlarged side view of the cone-shaped portion of the first embodiment of the present creation.

Fig. 3 is a partial enlarged side view of the cone-shaped portion of the second embodiment of the present creation.

Fig. 4 is a partial enlarged side view of the cone-shaped portion of the third embodiment of the present creation.

Fig. 5 is a partial enlarged side view of the cone-shaped part of the fourth embodiment of the present creation.

Fig. 6 is a perspective view of the fifth embodiment of the creation.

Fig. 7, Fig. 8, and Fig. 9 are schematic diagrams of the action of the nail gun in the prior art.

In the following, in conjunction with the drawings and preferred embodiments of this creation, the technical means adopted by this creation to achieve the predetermined creation purpose are further explained.

Please refer to FIG. 1 and FIG. 2, the firing pin of the nail gun of the present creation includes a shaft portion 10 and a cone-shaped portion 20.

The shaft portion 10 extends along a straight line. Specifically, in the first embodiment, the rod body 10 is a round rod, but in other embodiments, the rod body 10 may not be a round rod (for example, a square rod or a hexagonal rod).

The tapered portion 20 is provided at one end of the rod portion 10, and the tapered portion 20 and the rod portion 10 may be integrally formed, or two independent components may be combined with each other. The cone portion 20 has a cone shape, and in this embodiment is a cone shape. The tapered portion 20 extends coaxially with the shaft portion 10. The diameter of the cross-section of the tapered portion 20 decreases from the end connected to the rod portion 10 toward the end away from the rod portion 10.

The surface of the tapered portion 20 includes a rough surface. Specifically, the rough surface on the surface of the tapered portion 20 can have a variety of aspects. The first to fourth embodiments will be used to illustrate four of the four aspects, but the specific aspects of the rough surface are not based on the first to fourth embodiments. The embodiment is limited.

Please refer to FIG. 2, in the first embodiment, the rough bread of the tapered portion 20 includes a thread 21, whereby the thread 21 forms the rough surface on the surface of the tapered portion 20. Specifically, the thread 21 is generally called an oblique thread, that is, a thread on a screw or a screw rod.

3, in the second embodiment, the rough surface of the tapered portion 20A is a sandpaper surface 21A. Specifically, the rough surface of the tapered portion 20A has a large number of fine particles that can be used for grinding, that is, the tapered portion 20A has a large number of fine particles that can be used for grinding. The rough surface of the shaped portion 20A is like sandpaper.

4, in the third embodiment, the rough bread of the tapered portion 20B contains a plurality of ring flanges 21B. The ring flanges 21B are parallel to each other and arranged at intervals along the axial direction of the tapered portion 20, whereby the rings The surface of the flange 21B on the tapered portion 20B constitutes the rough surface. Moreover, in this embodiment, the distance that the ring flanges 21B protrude from the surface of the tapered portion 20B may be equal.

Please refer to FIG. 5, in the fourth embodiment, the rough bread of the tapered portion 20 contains a plurality of bumps 21C. The bumps 21C are irregularly arranged on the surface of the tapered portion 20, whereby the bumps 21C are in the tapered shape. The surface of the portion 20C constitutes the rough surface. Moreover, in this embodiment, the shapes of the bumps 21C may be different from each other. In addition, it can also be irregularly arranged grooves.

In addition, in the first to fourth embodiments, the end surface of the tapered portion 20 at the connection with the rod portion 10 is smaller than the end surface of the rod portion 10 at the connection with the tapered portion 20; in other words, the tapered portion 20 and the rod A step surface 30 is formed between the body parts 10, so that when the cone-shaped portion 20 strikes and penetrates into the tail of the nail, the step surface 30 can push the tail of the nail along the way, and thereby form an auxiliary thrust to drive the nail forward. ; But in other embodiments, there may be no step surface 30, that is, the surface of the tapered portion 20 and the annular surface of the rod portion 10 are smoothly connected.

Furthermore, please refer to FIG. 6, in the fifth embodiment of the present creation, the surface of the tapered portion 20D further includes a smooth surface 21D, the smooth surface 21D is connected to the rough surface 22D, and the smooth surface 21D is connected to the tapered portion 20D is away from one end of the shaft portion 10D, and the rough surface 22D is connected to the tapered portion 20D to one end of the shaft portion 10D. Thereby, the penetration of the smooth surface 21D can facilitate the taper portion 20D to pierce the shell of the tail of the nail.

By designing the surface of the tapered portion 20 as a rough surface, when the tapered portion 20 hits and protrudes into the tail of the nail, the surface of the tapered portion 20 will more surely rub the shell of the nail tail and its inner parts. Gunpowder, in turn, can generate higher heat energy than the smooth surface of the prior art, so that the nitrocellulose can be reliably ignited to fire the nail.

The above description is only the preferred embodiment of the creation, and does not limit the creation in any form. Although the creation has been disclosed in the preferred embodiment as above, it is not intended to limit the creation. Any technical field has Generally knowledgeable persons, without departing from the scope of this creative technical solution Within, when the technical content disclosed above can be used to make slight changes or modifications to equivalent embodiments with equivalent changes, any simple modification made to the above embodiments based on the technical essence of the creation without departing from the content of the technical solution of this creation , Equivalent changes and modifications are still within the scope of this creative technical proposal.

10: Rod body

20: Cone

30: Class side

Claims (10)

A firing pin of a nailing gun, which includes a shaft portion extending along a straight line; a cone-shaped portion arranged at one end of the shaft portion and extending coaxially with the shaft portion; the cross-section of the cone-shaped portion is The diameter decreases from the end connected to the rod body part toward the end away from the rod body part; the surface of the cone-shaped part includes a rough surface, and the rough surface is located on the ring side surface of the cone-shaped part. The firing pin of the nailing gun according to claim 1, wherein the rough bread of the cone-shaped portion contains a thread. The firing pin of a nailing gun according to claim 1, wherein the rough surface of the tapered portion is a sandpaper surface. The firing pin of a nailing gun according to claim 1, wherein the rough bread of the tapered portion includes a plurality of ring flanges, which are parallel to each other and are arranged at intervals along the axial direction of the tapered portion. The firing pin of a nailing gun according to claim 4, wherein the ring flanges protrude from the surface of the tapered portion at the same distance. The firing pin of a nailing gun according to claim 1, wherein the rough bread of the cone-shaped portion contains a plurality of bumps which are irregularly arranged on the surface of the cone-shaped portion. The firing pin of the nailing gun according to claim 6, wherein the shapes of the protrusions are different from each other. The firing pin of a nailing gun according to any one of claims 1 to 7, wherein the end surface of the tapered portion at the connection with the shaft portion is smaller than the end surface of the shaft portion at the connection with the tapered portion . The firing pin of a nailing gun according to any one of claims 1 to 7, wherein the shaft portion and the tapered portion are integrally formed. The firing pin of a nailing gun according to any one of claims 1 to 7, wherein the surface of the tapered portion further includes a smooth surface; the smooth surface is connected to the rough surface, and the smooth surface is connected to the tapered portion One end away from the rod body part, and the rough surface is connected to the cone-shaped part and one end of the rod body part.

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