CN210813803U - a dart needle - Google Patents

Abstract

The utility model provides a pair of dart needle, including syringe needle, needle bar and backshank, the syringe needle is in the one end of needle bar, the backshank is at the other end of needle bar, syringe needle, needle bar and backshank integrated into one piece that moulds plastics, the needle bar includes first connecting portion, second connecting portion and third connecting portion, the second connecting portion are between first connecting portion and third connecting portion, the other end of first connecting portion is fixed mutually with the syringe needle, the other end and the backshank of third connecting portion are fixed mutually. The utility model provides a pair of dart needle, moreover, the steam generator is simple in structure, the needle bar adopts syllogic structure smooth transition connection, ensure that dart needle can insert firmly when inserting the target circle, can extract along the outside shape of needle bar when pulling out dart needle simultaneously, card harmfully wait can not appear, ensure dart needle's life, and simultaneously, the mounting hole that is equipped with on the backshank, when using the installation, insert a guide arm in the mounting hole, rotatory guide arm can screw up dart needle light on dart rod, it is simple more convenient to install.

Description

a dart needle

technical field

The utility model relates to the technical field of dart products, in particular to a dart needle.

Background technique

Darts emerged in England in the 15th century, and at the beginning of the 20th century, it became a must-have for people's daily leisure in pubs. In the 1930s, darts became increasingly professional, with professional associations, professional competitions, and a large number of professional players. Today, darts is a very popular mass sport all over the world. Most of the dart needles used in the existing darts are one end of the needle, and the other end is used to be fixed on the dart shaft. hard metal) and soft needle darts (dart needle material is plastic). Hard needle darts are used to project hemp targets and paper targets, and soft needle darts are used to project plastic targets and electronic targets. When the existing soft needle darts are used, the dart needles are prone to fall off the ring or the dart needles due to structural reasons. After inserting the target ring, it is difficult to pull out, which is easy to cause deformation and damage of the dart needle, affecting its service life and entertainment.

Utility model content

The purpose of the utility model is to provide a dart needle to solve the technical problems in the background technology.

For achieving the foregoing purpose, the utility model provides the following technical solutions:

A dart needle, comprising a needle head, a needle shaft and a needle tail, the needle head is at one end of the needle shaft, the needle tail is at the other end of the needle shaft, the needle head, the needle shaft and the needle tail are integrally formed by injection molding, and the The needle bar includes a first connecting part, a second connecting part and a third connecting part, the second connecting part is between the first connecting part and the third connecting part, and the other end of the first connecting part is fixed with the needle head , the other end of the third connecting part is fixed with the needle tail, the transverse section of the first connecting part is a first equilateral trapezoid structure, and the clip between the hypotenuse of the first equilateral trapezoid and its lower bottom The angle is 89.5°-89°, the transverse section of the second connecting portion is a second equilateral trapezoid structure, and the angle between the hypotenuse of the second equilateral trapezoid and its lower base is 88.5°-87°, The transverse section of the third connecting portion is a third equilateral trapezoid structure, and the included angle between the hypotenuse of the third equilateral trapezoid and its lower base is 85°-78°.

The needle tail is provided with a thread segment, and the thread segment has an external thread.

The length of the first connection part is smaller than the length of the second connection part, and the length of the second connection part is smaller than the length of the third connection part.

The height of the first equilateral trapezoid is 7.0-7.2mm, the height of the second equilateral trapezoid is 7.9-8.5mm, and the height of the third equilateral trapezoid is 8.1-9.0mm.

The third connecting part is provided with an installation hole, and the installation hole penetrates the upper and lower end surfaces of the third connecting part.

The left and right sides of the installation hole are respectively provided with anti-skid bosses.

Compared with the prior art, the dart needle provided by the utility model has a simple structure, and the needle bar adopts a three-section structure for smooth transition connection, so as to ensure that the dart needle can be inserted firmly when it is inserted into the target ring, and at the same time, when the dart is pulled out, the dart needle can be firmly inserted. When the needle is used, it can be pulled out along the outer shape of the needle bar, and there will be no defects such as jamming, so as to ensure the service life of the dart needle. At the same time, there is a mounting hole on the needle tail. Guide rod, the dart needle can be easily tightened on the dart shaft by rotating the guide rod, and the installation is more simple and convenient.

Description of drawings

Figure 1: Front view of a dart needle;

Figure 2: A schematic diagram of the three-dimensional structure of a dart needle.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Specific embodiment 1: Please refer to FIG. 1 and FIG. 2. In the embodiment of the present utility model, a dart needle includes a needle head 1, a needle shaft 2 and a needle tail 6. The needle head 1 is at one end of the needle shaft 2, so the The needle tail 6 is at the other end of the needle bar 2. The needle head 1, the needle bar 2 and the needle tail 6 are integrally formed by injection molding. The needle bar 2 includes a first connecting portion 3, a second connecting portion 4 and a third connecting portion. 5. The second connecting part 4 is between the first connecting part 3 and the third connecting part 5, the other end of the first connecting part 3 is fixed with the needle 1, and the other end of the third connecting part 5 Fixed with the needle tail 6, the first connecting part 3, the second connecting part 4 and the third connecting part 5 are smoothly connected by transition, and the transverse section of the first connecting part 3 is a first equilateral trapezoid structure , the angle α between the hypotenuse of the first equilateral trapezoid and its lower base is 89°, the transverse section of the second connecting portion 4 is a second equilateral trapezoid structure, and the second equilateral trapezoid has a The angle β between the hypotenuse and its lower base is 87°, the transverse section of the third connecting portion 5 is a third equilateral trapezoid structure, and the clamp between the hypotenuse of the third equilateral trapezoid and its lower base is 87°. The angle γ is 80°.

The needle tail 6 is provided with a threaded section, and the threaded section has an external thread. The provided thread segment is convenient for the dart needle and the dart shaft to be threadedly connected and fixed.

The length of the first connecting portion 3 is less than the length of the second connecting portion 4 , and the length of the second connecting portion 4 is less than the length of the third connecting portion 5 . The height H1 of the first equilateral trapezoid is 7.0 mm, the height H2 of the second equilateral trapezoid is 7.9 mm, and the height H3 of the third equilateral trapezoid is 8.1 mm.

The third connecting portion 5 is provided with a mounting hole 501 , and the mounting hole 501 penetrates the upper and lower end surfaces of the third connecting portion 5 . When installing the dart needle, the guide rod can be inserted into the installation hole 501, and then the needle tail 6 of the dart needle can be screwed to the dart shaft, which is more effective than simply taking the dart needle by hand and tightening it on the dart shaft Better and faster, improve installation efficiency.

Anti-skid bosses 502 are respectively provided on the left and right sides of the installation hole 501 . The anti-skid boss 502 is tapered, which can achieve a certain aesthetic effect while playing the role of anti-slip for taking the dart needle.

Compared with the prior art, the dart needle provided by the utility model has a simple structure, and the needle bar adopts a three-section structure for smooth transition connection, so as to ensure that the dart needle can be inserted firmly when it is inserted into the target ring, and at the same time, when the dart is pulled out, the dart needle can be firmly inserted. When the needle is used, it can be pulled out along the outer shape of the needle bar, and there will be no defects such as jamming, so as to ensure the service life of the dart needle. At the same time, there is a mounting hole on the needle tail. Guide rod, the dart needle can be easily tightened on the dart shaft by rotating the guide rod, and the installation is more simple and convenient.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Accordingly, the embodiments are to be considered in all respects as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. A dart needle is characterized in that: comprise needle head, needle bar and needle tail, described needle head is at one end of needle shaft, and described needle tail is at the other end of needle shaft, described needle head, needle shaft and needle tail Injection molding, the needle bar includes a first connection part, a second connection part and a third connection part, the second connection part is between the first connection part and the third connection part, the first connection part is The other end is fixed with the needle head, the other end of the third connecting part is fixed with the needle tail, the transverse section of the first connecting part is a first equilateral trapezoid structure, and the hypotenuse of the first equilateral trapezoid is The included angle between the lower bases is 89.5°-89°, the transverse section of the second connecting portion is a second equilateral trapezoid structure, and the included angle between the hypotenuse of the second equilateral trapezoid and its lower base is 88.5°-87°, the transverse section of the third connecting portion is a third equilateral trapezoid structure, and the included angle between the hypotenuse of the third equilateral trapezoid and its lower base is 85°-78°. 2 . The dart needle according to claim 1 , wherein the needle tail is provided with a thread segment, and the thread segment has an external thread. 3 . 3. A dart needle according to claim 1, characterized in that: the length of the first connecting part is less than the length of the second connecting part, and the length of the second connecting part is less than the length of the third connecting part . 4. a kind of dart needle according to claim 1 is characterized in that: the height of described first equilateral trapezoid is 7.0-7.2mm, and the height of described second equilateral trapezoid is 7.9-8.5mm, so The height of the third equilateral trapezoid is 8.1-9.0mm. 5 . The dart needle according to claim 1 , wherein a mounting hole is provided on the third connecting portion, and the mounting hole penetrates the upper and lower end surfaces of the third connecting portion. 6 . 6 . The dart needle according to claim 5 , wherein the left and right sides of the mounting hole are respectively provided with anti-skid bosses. 7 .

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