TWM650728U - High-speed gunpowder nail combined with threaded tube - Google Patents

Abstract

This invention relates to a high-speed gunpowder nail combined with a tooth tube, which includes a tooth nail, a connecting tube, a gunpowder body and a moisture-proof bottom plug. The tooth nail is provided with an external thread part. The connecting pipe is provided with an internal thread part, and the internal thread part is screwed to the external thread part. The gunpowder body is located on the connecting pipe. The moisture-proof bottom plug is located at an end of the connecting tube away from the tooth nail. In this way, threaded rods with small thread specifications can be effectively screwed together, and the threaded rods and the threaded nails are in a vertical relationship, which can improve the assembly strength and solve the problem of the difficulty and high cost of high-speed screws in the conventional one-piece inner threaded barrel. It is known that the number of teeth of the hanging piece is too low, resulting in insufficient thread strength and other problems.

Description

High-speed gunpowder nail combined with dental tube

This invention relates to a high-speed gunpowder nail, and in particular to an improvement in the technical structure of a high-speed gunpowder nail that can be combined with a dental tube.

According to the installation configuration of traditional ceiling pipes or light steel frames, there are two types. The first assembly method is to use high-speed nails with an integrally formed inner tooth cylinder. After the threaded rod is screwed to the inner threaded cylinder, the threaded rod is Construction objects can be assembled. The disadvantage of the first assembly method is that the high-speed nails with an integrally formed inner tooth barrel are only suitable for making 3/8 UNC thread or M8 thread or above. Because the tube body becomes hard after one-piece forging, even after annealing treatment, It is completely unsuitable for tapping threads with specifications below 1/4 UNC thread or M6 thread. Therefore, there has never been a high-speed nail with an integrally formed inner thread barrel on the market.

The second assembly method is to use an internal threaded hanging piece. The nail body is combined with the hanging piece and the nail body is driven into the ceiling to fix it. Then the threaded rod is screwed to the hanging piece. Figure 6 shows an M6 internally threaded hanging piece commonly used in the Chinese market. The hanging piece 81 is stamped from the piece body to form a hole and a flange 82, and then the flange 82 is tapped to form an internal thread. The bottom of the nail body 83 is provided with A plastic gunpowder cartridge 84 is installed to provide firepower. This hanging piece has the following disadvantages: 1. The metal material consumption of the hanging piece 81 is extremely high, which is nearly 50% higher than the first assembly method. 2. The material cost of plastic gunpowder cartridges is high. 3. The high-temperature and high-pressure injection molding of the hanging piece 81 consumes a lot of electricity. 4. The number of teeth of the internal thread of flange 82 is generally only 2 to 2.5. A serious lack of teeth can easily lead to insufficient pulling force and cause the thread rod to fall off, making it impossible to obtain certification.

The third assembly method is a 1/4" UNC inner tooth hanging piece as shown in Figure 7. Its structure is to stamp the hanging piece 91 front and back to form a semicircular flange 92, and the semicircular flange 92 faces inward. One side is provided with threads, and is matched with the nail body 93 and the copper-shelled nail bullet 94 specially used for American ceiling guns. The disadvantages of using this structure are: 1. The metal semicircle of the hanging piece 91 is extremely expensive, which is higher than the first assembly. The method is nearly 60%. 2. The copper material used in the copper-shell nail bullets 94 is extremely expensive. Each million copper-shell nail bullets 94 consumes about 1 ton of copper material. 3. Hanging piece 91 and copper-shell nail bullets 94 Compared with the first assembly method, the shipping cost of nail bullet 94 will cost about 60% more. 4. The semicircular flange 92 does not completely cover the threaded rod, resulting in incomplete screw connection, resulting in insufficient tension of the hanging piece 91 and causing the thread If the rod falls off, the certification cannot be obtained. 5. There is no electroplating layer after thread tapping and it is easy to be corroded by moisture. Moreover, the joint of the nail body of the hanging piece and the joint of the threaded rod are not in a vertical relationship, so when the force is too heavy, the hanging The blades will bend and deform, causing construction objects to tilt or fall, which has shortcomings that need to be improved urgently.

Therefore, it is necessary to provide a novel and progressive high-speed gunpowder nail combined with a dental tube to solve the above problems.

The main purpose of this creation is to provide a high-speed gunpowder nail combined with a threaded tube, which can effectively screw threaded rods with small thread specifications, and the threaded rod and the nail body are in a vertical relationship, which can improve the assembly strength.

In order to achieve the above purpose, this invention provides a high-speed gunpowder nail combined with a tooth tube, including a tooth nail, a connecting tube, a gunpowder body and a moisture-proof bottom plug. The tooth nail is provided with an external thread part. The connecting pipe is provided with an internal thread part, and the internal thread part is screwed to the external thread part. The gunpowder body is located on the connecting pipe. The moisture-proof bottom plug is located at an end of the connecting tube away from the tooth nail.

Previous technology:

81: hanging piece

82:Flange

83: Nail body

84:Plastic gunpowder cartridge

91: hanging piece

92: Semicircular flange

93: Nail body

94: Copper shell nail bullets

This creation:

1: tooth nail

11: External thread part

12: nail body

13: Nail head

2:Connecting pipe

21: Internal thread part

3:Gunpowder body

31: propellant

32,32A: Moisture-proof bottom plug

321: Bottom wall

322,322A: Groove

323: Ring flange

324: Ring wall

325A: Top wall

33: Primer powder

Figure 1 is a perspective view of a preferred embodiment of this invention.

Figures 2 and 3 are exploded views of a preferred embodiment of this invention.

Figure 4 is a side cross-sectional view of a preferred embodiment of the present invention.

Figure 5 is a side cross-sectional view of another preferred embodiment of the present invention.

Figure 6 is a schematic diagram of the first conventional hanging piece.

Figure 7 is a schematic diagram of the second conventional hanging piece.

The following examples are only used to illustrate the possible implementation modes of this invention, but are not intended to limit the scope of protection sought by this invention, and are explained in advance.

Please refer to Figures 1 to 4, which show a preferred embodiment of this invention. The high-speed powder nail combined with a dental tube of this invention includes a tooth nail 1, a connecting tube 2, a powder body 3 and a moisture-proof bottom plug 32.

The dental nail 1 is provided with an external thread portion 11 .

The connecting pipe 2 is provided with an internal thread portion 21 , and the internal thread portion 21 is screwed to the external thread portion 11 .

The gunpowder body 3 is provided in the connecting pipe 2 .

The moisture-proof bottom plug 32 is provided at an end of the connecting pipe away from the tooth nail to achieve a moisture-proof effect and prevent the gunpowder body 3 from being separated from the connecting pipe 2 .

In this way, the industry can separately manufacture the tooth nail 1 and the connecting tube 2, and then screw the connecting tube 2 to the tooth nail 1. When a nail gun is used to detonate the gunpowder body 3, the tooth nail 1 will be struck. After inserting an object (such as a cement ceiling), the threaded nail 1 is indirectly provided with the internal thread portion 21 for threading a threaded rod of small size (such as 1/4 UNC thread or M6 thread or less). To carry out installation work of construction objects. This creation has the following Advantages: 1. It has sufficient number of teeth and root thickness for assembly with the dental rod to comply with international standards. 2. The structure is simple and can save about 63% of steel. 3. It can save the injection molding equipment, molds and manpower required by the conventional integrated nail connecting hanging piece shown in Figure 6. 4. Reduce the copper material consumption of conventional copper shell nail bullets or the plastic cost of plastic powder cartridges. 5. Save the punching equipment, molds and manpower of conventional hanging pieces. 6. The overall weight is significantly reduced, which can save transportation costs. 7. The connecting tube 2 and the tooth nail 1 are in a vertical relationship, which can solve the bending problem of the traditional hanging piece, so this invention has high structural strength.

Specifically, the dental nail 1 includes a nail body 12 and a nail head 13. The nail body 12 is connected to the nail head 13. The nail head 13 is provided with the external thread portion 11. The dental nail 1 is quenched and has With a relatively hard structure, the connecting pipe 2 is a metal pipe. After the connecting pipe 2 is tapped to form the internal thread portion 21, it does not need to be fired, thereby reducing manufacturing costs. The radial size of the nail body 12 is smaller than the radial size of the nail head 13 . The axial length of the connecting tube 2 is greater than the axial length of the nail head 13 . In this embodiment, the axial length of the connecting pipe 2 is greater than twice the axial length of the nail head 13 so that the internal thread portion 21 has a sufficient number of threads to be threaded with the threaded rod.

Among them, the gunpowder body 3 includes a propellant 31, which is nitrocellulose solid gunpowder or powdered propellant. The propellant 31 is contained in the connecting pipe 2, and the moisture-proof bottom plug 32 is inserted into the connecting pipe. 2. Keep away from one end of the tooth nail 1 to achieve a moisture-proof effect and prevent the propellant 31 from getting damp.

Furthermore, the moisture-proof bottom plug 32 includes an annular wall 324 and a bottom wall 321. The bottom wall 321 is located at an end of the annular wall 324 away from the dental nail 1. The bottom wall 321 is located at another side of the annular wall 324 away from the dental nail 1. There is a groove 322. The moisture-proof bottom plug 32 is a plastic part. The ring wall 324 accommodates a bottom gunpowder 33. The function of the groove 322 is to reduce the thickness of the bottom wall 321 so that the firing pin of the nail gun can smoothly penetrate the bottom wall 321 and ignite the bottom wall. The primer 33 can have a firing rate of 100% under normal use, and the propellant 31 is detonated by the primer 33 . The bottom wall 321 is provided with an annular flange 323 in the radial direction. The annular flange 323 blocks the end surface of the connecting pipe 2 to position the moisture-proof bottom plug 32 .

As shown in Figure 5, in another embodiment of the present invention, the moisture-proof bottom plug 32A is not provided with bottom powder. Compared with the previous embodiment, the groove 322A is greatly recessed and is isolated by a top wall 325A. The propellant can be ignited by directly hitting the firing pin of the nail gun, which can save the cost of primer, but it is more suitable for use in dry and low-humidity environments.

1: tooth nail

12: nail body

13: Nail head

2:Connecting pipe

3:Gunpowder body

Claims (10)

A high-speed gunpowder nail combined with a tooth tube, including: a tooth nail provided with an external thread part; a connecting pipe provided with an internal thread part, the internal thread part being screwed to the external thread part; a gunpowder body located on the connection pipe; a moisture-proof bottom plug is located at an end of the connecting pipe away from the tooth nail. The high-speed gunpowder nail combined with a tooth tube as described in claim 1, wherein the tooth nail includes a nail body and a nail head, the nail body is connected to the nail head, and the nail head is provided with the external thread portion. The high-speed gunpowder nail combined with a dental tube as described in claim 2, wherein the radial size of the nail body is smaller than the radial size of the nail head. The high-speed gunpowder nail combined with the dental tube as described in claim 2, wherein the axial length of the connecting tube is greater than the axial length of the nail head. The high-speed gunpowder nail combined with a dental tube as described in claim 4, wherein the axial length of the connecting tube is greater than twice the axial length of the nail head. The high-speed gunpowder nail combined with a dental tube as described in claim 1, wherein the connecting tube is a metal tube. The high-speed propellant nail combined with a dental tube as described in any one of claims 1 to 6, wherein the propellant body includes a propellant, and the propellant is accommodated in the connecting tube. The high-speed gunpowder nail combined with a tooth tube as described in claim 7, wherein the moisture-proof bottom plug includes an annular wall and a bottom wall, the bottom wall is located at an end of the annular wall away from the tooth nail, and the bottom wall is away from the tooth nail. There is also a groove on one side. As for the high-speed gunpowder nail combined with the dental tube described in claim 8, the bottom wall is provided with an annular flange in a radial direction, and the annular flange blocks the end surface of the connecting tube. The high-speed gunpowder nail combined with a dental tube as described in claim 3, wherein the axial length of the connecting tube is greater than the axial length of the nail head; the axial length of the connecting tube is greater than twice the axial length of the nail head ; The connecting pipe is a metal pipe; the gunpowder body includes a propellant, and the propellant is contained in the connecting pipe; the moisture-proof bottom plug includes a ring wall and a bottom wall, and the bottom wall is located on the ring wall away from the tooth nail At one end, the bottom wall is provided with a groove on the side away from the tooth nail; the bottom wall is provided with an annular flange in the radial direction, and the annular flange blocks the end surface of the connecting pipe; the moisture-proof bottom plug is a plastic part , the ring wall accommodates a base of gunpowder; the propellant is nitrocellulose solid gunpowder or powdered propellant.

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