CN217036073U

CN217036073U - Burning-proof bullet needle

Info

Publication number: CN217036073U
Application number: CN202122817401.4U
Authority: CN
Inventors: 张刚
Original assignee: Dongguan Anshengxun Precision Hardware Co ltd
Current assignee: Dongguan Anshengxun Precision Hardware Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-07-22
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a burning-proof bullet needle which comprises a sleeve and a spring, wherein the upper end of the sleeve is connected with a movable shaft, a mushroom head is arranged inside the sleeve, and one end of the mushroom head is connected with the spring. This prevent fever bullet needle, the mushroom head uses brass material preparation for the biggest current-limiting increase that the bullet needle structure passes through.

Description

Burning-proof elastic needle

Technical Field

The utility model relates to the technical field of elastic needles, in particular to an anti-burning elastic needle.

Background

The existing bullet needle contact position is easy to burn, the maximum flow limiting value of a bullet needle structure is not high, and a burning-proof bullet needle is provided for the above situation.

SUMMERY OF THE UTILITY MODEL

The present invention aims to provide a burning-proof bullet needle to solve the problems in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a prevent fever bullet needle, includes sleeve pipe and spring, sheathed tube upper end is connected with the loose axle, and sheathed tube inside is equipped with the mushroom head, the one end of mushroom head is connected with the spring.

Preferably, an inserting structure is arranged between the mushroom head and the spring.

Preferably, the bottom of the movable shaft is of an inclined plane structure.

Preferably, the movable shaft, the sleeve and the mushroom head are all made of brass materials.

Compared with the prior art, the utility model has the beneficial effects that: this prevent burning bullet needle, the inside design of mushroom that uses of structure reduces occupation of inner space for more small and exquisite that bullet needle overall structure can design, the loose axle bottom uses the inclined plane design, prevents that the contact position from burning out, and the mushroom head uses the preparation of brass material, makes the biggest current-limiting increase that the bullet needle structure passes through.

Drawings

FIG. 1 is a schematic diagram of a free-state structure of the present invention;

FIG. 2 is a schematic structural diagram of a use state of the present invention;

FIG. 3 is a schematic view of the overall external structure of the present invention;

fig. 4 is a schematic diagram of an explosive structure according to the present invention.

In the figure: 1. a movable shaft; 2. a sleeve; 3. mushroom heads; 4. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a prevent fever bullet needle, includes loose axle 1, sleeve pipe 2, mushroom head 3 and spring 4, and the upper end of sleeve pipe 2 is connected with loose axle 1, and the inside of sleeve pipe 2 is equipped with mushroom head 3, and the one end of mushroom head 3 is connected with spring 4.

The mushroom head 3 and the spring 4 are in a plug-in structure, current passes through the movable shaft 1 and the sleeve 2, when the mushroom head type automatic feeding device works, the movable shaft 1 is extruded by the contact of the device, the mushroom head 3 is pushed to extrude the spring 4 inwards, the spring 4 is extruded to generate an outward acting force to push the mushroom head 3 and the movable shaft 1 outwards, and the contact point of the device is tightly contacted with the movable shaft 1, so that the contact resistance is reduced, the heat production is reduced, and the contact point is prevented from being burnt;

the bottom of the movable shaft 1 is of an inclined surface structure, so that an included angle is formed between the acting force direction between the inclined surface and the mushroom head 3 and the reaction force direction of the spring 4, namely a transverse acting force is generated, the movable shaft 1 deflects, the movable shaft 1 is tightly attached to a winding pipe, the contact resistance is reduced, heat is generated, and the contact surface is prevented from being burnt;

loose axle 1, sleeve pipe 2 and mushroom head 3 all adopt brass material, and mushroom head 3 contacts with spring 4 with the plug-in mode, makes the contact resistance between mushroom head 3 and the spring 4 reduce, reduces the heat production, prevents that the contact point from burning out, because of mushroom head 3 has good electric conductivity with spring 4, is parallel relation in the return circuit with sleeve pipe 2 to the resistance that makes whole bullet needle structure reduces, makes the biggest current-limiting increase that the bullet needle structure passes through.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An anti-burn bullet needle, includes sleeve pipe (2) and spring (4), its characterized in that: the upper end of sleeve pipe (2) is connected with loose axle (1), and the inside of sleeve pipe (2) is equipped with mushroom head (3), the one end of mushroom head (3) is connected with spring (4).

2. The burning preventive bullet needle according to claim 1, wherein: an inserting structure is arranged between the mushroom head (3) and the spring (4).

3. The burning preventive bullet needle according to claim 1, wherein: the bottom of the movable shaft (1) is of an inclined plane structure.

4. The burning preventive bullet needle according to claim 1, wherein: the movable shaft (1), the sleeve (2) and the mushroom head (3) are all made of brass materials.