CN208568867U

CN208568867U - A kind of needle shaft breech face is the test probe of 72 degree of slope bevel edges

Info

Publication number: CN208568867U
Application number: CN201821221869.9U
Authority: CN
Inventors: 彭书谦
Original assignee: Shanghai Standard Industrial Co Ltd
Current assignee: Shanghai Standard Industrial Co Ltd
Priority date: 2018-04-17
Filing date: 2018-07-31
Publication date: 2019-03-01
Anticipated expiration: 2028-07-31

Abstract

The utility model discloses the test probes that a kind of needle shaft breech face is 72 degree slope bevel edges, it is characterised in that: including a needle tubing, the left end of the needle tubing is closed end, and the right end of the needle tubing is equipped with the opening or receipts riveting mouth that one stretches out for needle shaft；A spring is equipped in the lumen of the needle tubing, the tail end of the needle shaft and the spring interface touch, and the head end of the needle shaft passes through described open or receipts riveting mouth and exposes to the needle tubing；The tail end of the needle shaft is an oblique angle, which is 70 ° to 80 °.The contact surface of needle shaft tail end and spring will be changed to 72 degree of slope bevel edges by the utility model, is reduced probe interior contact resistance to increase the reliability of contact to greatest extent and is reduced the contact resistance of probe interior, to improve product test first-pass yield.

Description

A kind of needle shaft breech face is the test probe of 72 degree of slope bevel edges

Technical field

The utility model relates to the test probes that a kind of probe more particularly to a kind of needle shaft breech face are 72 degree of slope bevel edges.

Background technique

Test probe is widely used in the electric signal connection of electronic product research and development and production test, tests the structure of probe It is usually made of needle shaft, needle tubing and three part of spring, in use, the downward compressed spring of needle shaft, needle shaft tail end passes through spring and needle Pipe orifice bottom contacts to conduct electric signal；Existing needle shaft breech face is planar structure or pyramidal structure, both the above structure All have that contact resistance is larger, stability and the poor problem of reliability, so that the test first-pass yield and stability of product are lower.

Utility model content

The purpose of this utility model is to solve the problems of the prior art, and providing a kind of needle shaft breech face is 72 degree of slope bevel edges Test probe.

The technical solution of the utility model is: a kind of needle shaft breech face is the test probe of 72 degree of slope bevel edges, and feature exists In: including a needle tubing, the left end of the needle tubing is closed end, and the right end of the needle tubing is equipped with the opening or receipts stretched out for needle shaft Riveting mouth；A spring is equipped in the lumen of the needle tubing, the tail end of the needle shaft and the spring interface touch, the head of the needle shaft End exposes to the needle tubing across the opening；The tail end of the needle shaft is an oblique angle, which is 70 ° to 80 °.

Preferably, the oblique angle is 72 °.

Preferably, the left end of the needle tubing is equipped with a connection bump.

Preferably, the spring is curved spring.

Preferably, the trailing end outer diameter of the needle shaft is less than the lumen diameter.

The contact surface of needle shaft tail end and spring is changed to 72 degree of slope bevel edges by the utility model, reduces probe interior contact electricity Resistance, to increase the reliability of contact to greatest extent, reduces the contact resistance of probe interior, so that it is straight-through to improve product test Rate.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Specific embodiment

In order to make technological means, technical characteristic, purpose of utility model and technical effect of the utility model be easy to bright The utility model is further described below with reference to being specifically illustrating in white understanding.

As shown in Figure 1, be a kind of needle shaft breech face of the utility model being the test probe of 72 degree of slope bevel edges, feature exists In: including a needle tubing 1, the left end 10 of the needle tubing 1 is closed end, the right end 11 of the needle tubing be equipped with one for needle shaft 2 head end 20 openings stretched out receive riveting mouth 12；The left end 11 of the needle tubing 1 is equipped with a connection bump 13, and the centre of the needle tubing 1 is in interior Empty lumen 14.

The present embodiment in the lumen of the needle tubing 1 14 be equipped with a spring 3, the spring 3 be curved spring.The needle shaft 2 tail end 21 is in contact with the spring 3, and 21 outer diameter of tail end of the needle shaft 2 is less than the internal diameter of the lumen 14, in order to this The tail end 21 of needle shaft 2 is placed in the lumen 14, it is made to reciprocatingly move under the elastic force effect of spring 3.

The head end 20 of the needle shaft 2 passes through described open or receipts riveting mouth 12 and exposes to the needle tubing 1, the survey for product It tries, the tail end of the needle shaft 2 in the utility model is an oblique angle, which is 70 ° to 80 °, preferably should in the present embodiment Oblique angle is 72 °, during probe needle shaft 2 pushes, to needle tubing 1 after the breech face slope bevel edge and 3 contact of spring of needle shaft 2 Inner hole wall displacement is simultaneously steadily contacted with its shape, effectively improves the problem that traditional structure contact resistance is big, contact is unstable.

The contact surface of needle shaft tail end and spring will be changed to 72 degree of slope bevel edges by the utility model, reduce probe interior contact electricity Resistance, to increase the reliability of contact to greatest extent, reduces the contact resistance of probe interior, so that it is straight-through to improve product test Rate.

In summary it is only the utility model preferred embodiment, is not used to limit the scope of the utility model. Equivalence changes and modification made by i.e. all contents according to present utility model application the scope of the patents, all should belong to the skill of the utility model Art scope.

Claims

1. the test probe that a kind of needle shaft breech face is 72 degree of slope bevel edges, it is characterised in that: including a needle tubing, a left side for the needle tubing End is closed end, and the right end of the needle tubing is equipped with the opening or receive riveting mouth that one stretches out for needle shaft；It is set in the lumen of the needle tubing There is a spring, the tail end of the needle shaft and the spring interface touch, and the head end of the needle shaft passes through outside described open or receipts riveting mouth It is exposed to the needle tubing；The tail end of the needle shaft is an oblique angle, which is 70 ° to 80 °.

2. the test probe that needle shaft breech face according to claim 1 is 72 degree of slope bevel edges, it is characterised in that: the oblique angle It is 72 °.

3. the test probe that needle shaft breech face according to claim 1 is 72 degree of slope bevel edges, it is characterised in that: the needle tubing Left end be equipped with a connection bump.

4. the test probe that needle shaft breech face according to claim 1 is 72 degree of slope bevel edges, it is characterised in that: the spring For curved spring.

5. the test probe that needle shaft breech face according to claim 1 is 72 degree of slope bevel edges, it is characterised in that: the needle shaft Trailing end outer diameter be less than the lumen diameter.