CN208568869U - Increase the probe of steel ball between a kind of needle shaft breech face and spring - Google Patents
Increase the probe of steel ball between a kind of needle shaft breech face and spring Download PDFInfo
- Publication number
- CN208568869U CN208568869U CN201821222356.XU CN201821222356U CN208568869U CN 208568869 U CN208568869 U CN 208568869U CN 201821222356 U CN201821222356 U CN 201821222356U CN 208568869 U CN208568869 U CN 208568869U
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- needle
- spring
- needle shaft
- steel ball
- probe
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Abstract
The utility model discloses the probes for increasing steel ball between a kind of needle shaft breech face and spring, 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 receive riveting mouth that one stretches out for needle shaft；It is equipped with a spring in the lumen of the needle tubing, a steel ball is equipped between the tail end of the needle shaft and the spring, 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 is changed to 72 degree of slope bevel edges by the utility model, and a steel ball is equipped between the tail end of the needle shaft and the spring, probe needle shaft push during needle shaft tail end slope bevel edge and steel ball contact after, it is mobile to needle interior wall and be close to needle interior wall and be steadily contacted with it at the bevel edge acute angle of needle shaft slope, to reduce the contact resistance of probe；After spring and steel ball contact uniform stressed simultaneously, spring downward is smooth, to improve probe service life.
Description
Technical field
The utility model relates to increase the spy of steel ball between a kind of probe more particularly to a kind of needle shaft breech face and spring
Needle.
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, provides and increases between a kind of needle shaft breech face and spring
Add the probe of steel ball.
The technical solution of the utility model is: increasing the probe of steel ball, feature between a kind of needle shaft breech face and spring
Be: including a needle tubing, the left end of the needle tubing is closed end, the right end of the needle tubing be equipped with the opening that one stretches out for needle shaft or
Receive riveting mouth；It is equipped with a spring in the lumen of the needle tubing, a steel ball, institute are equipped between the tail end of the needle shaft and the spring
The head end for stating 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, the oblique angle
It 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, and the tail end of the needle shaft with
Between the spring be equipped with a steel ball, probe needle shaft push during needle shaft tail end slope bevel edge and steel ball contact after, needle
It is mobile to needle interior wall and be close to needle interior wall and be steadily contacted with it at the bevel edge acute angle of axis slope, so that the contact for reducing probe is electric
Resistance；After spring and steel ball contact uniform stressed simultaneously, spring downward is smooth, so that probe service life is improved, with to greatest extent
The reliability for increasing contact, to improve product test first-pass yield.
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, increasing the probe of steel ball, feature between a kind of needle shaft breech face and spring of the utility model
Be: 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
The opening or receive riveting mouth 12 that end 20 is stretched out；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 interior
Hollow 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
It is equipped with a steel ball 4 between 2 tail end 21 and the spring 3, needle shaft is processed as 72 ° of oblique angles, during probe needle shaft pushes
After needle shaft tail end slope bevel edge and steel ball contact, it is mobile to needle interior wall at the bevel edge acute angle of needle shaft slope and be close to needle interior wall with
It is steadily contacted, to reduce the contact resistance of probe.
21 outer diameter of tail end of the needle shaft 2 is less than the internal diameter of the lumen 14, in order to which the tail end 21 of the needle shaft 2 is placed in institute
It states in 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 °.
The contact surface of needle shaft tail end and spring is changed to 72 degree of slope bevel edges by the utility model, and the tail end of the needle shaft with
Between the spring be equipped with a steel ball, probe needle shaft push during needle shaft tail end slope bevel edge and steel ball contact after, needle
It is mobile to needle interior wall and be close to needle interior wall and be steadily contacted with it at the bevel edge acute angle of axis slope, so that the contact for reducing probe is electric
Resistance；After spring and steel ball contact uniform stressed simultaneously, spring downward is smooth, so that probe service life is improved, with to greatest extent
The reliability for increasing contact, to improve product test first-pass yield.
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 (5)
1. increasing the probe of steel ball between a kind of needle shaft breech face and spring, it is characterised in that: including a needle tubing, the needle tubing
Left 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；In the lumen of the needle tubing
Equipped with a spring, a steel ball is equipped between the tail end of the needle shaft and the spring, the head end of the needle shaft passes through the opening
Expose to the needle tubing；The tail end of the needle shaft is an oblique angle, which is 70 ° to 80 °.
2. increasing the probe of steel ball between needle shaft breech face according to claim 1 and spring, it is characterised in that: described oblique
Angle is 72 °.
3. increasing the probe of steel ball between needle shaft breech face according to claim 1 and spring, it is characterised in that: the needle
The left end of pipe is equipped with a connection bump.
4. increasing the probe of steel ball between needle shaft breech face according to claim 1 and spring, it is characterised in that: the bullet
Spring is curved spring.
5. increasing the probe of steel ball between needle shaft breech face according to claim 1 and spring, it is characterised in that: the needle
The trailing end outer diameter of axis is less than the lumen diameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820543372 | 2018-04-17 | ||
| CN2018205433722 | 2018-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208568869U true CN208568869U (en) | 2019-03-01 |
Family
ID=65449023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821222356.XU Active CN208568869U (en) | 2018-04-17 | 2018-07-31 | Increase the probe of steel ball between a kind of needle shaft breech face and spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208568869U (en) |
-
2018
- 2018-07-31 CN CN201821222356.XU patent/CN208568869U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |