CN213210242U - Wear-resistant test needle capable of prolonging service life - Google Patents
Wear-resistant test needle capable of prolonging service life Download PDFInfo
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- CN213210242U CN213210242U CN202022243488.4U CN202022243488U CN213210242U CN 213210242 U CN213210242 U CN 213210242U CN 202022243488 U CN202022243488 U CN 202022243488U CN 213210242 U CN213210242 U CN 213210242U
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Abstract
The utility model discloses a wear-resistant test pin capable of prolonging the service life, which has the main application fields of ICT test, function test, high-power test pin, PCB test and semiconductor (IC) test of electronic products; the application mode comprises the function test of electronic products and semiconductors in a needle bed mode. The utility model comprises a needle body and a needle tube, wherein the needle body comprises a needle head, a needle rod and a needle holder, the needle tube is provided with a spring, the needle holder is inserted in the needle tube, the inner diameter of the needle tube is 1.1 mm-1.2 mm, and the diameter of the needle rod is 0.80 mm-0.88 mm; the needle holder is cylindrical, and the bottom edge of the needle holder and the two side edges of the needle holder form a circular angle respectively. The utility model provides a difficult fracture, live time is permanent, and is stand wear and tear, the good test needle that can increase of service life stand wear and tear of electric conductive property.
Description
Technical Field
The utility model relates to an electron test needle technical field, in particular to but increase of service life stand wear and tear test needle.
Background
The test needle is also called a probe in the industry, and the main application fields of the product are an electronic product ICT test, a functional test, a high-power test needle, a PCB test and a semiconductor (IC) test, and the application mode comprises the functional test of the electronic product and the semiconductor in a needle bed mode.
The existing test needle has the defects that the total length of the needle head is longer, the compression stroke is overlarge, the compression ratio of a spring is overlarge, and the spring is easy to break.
The existing test needle has no anti-abrasion design, the difference value between the inner diameter of the tube and the diameter of the needle rod is too small, and the needle head is easy to abrade the gold-plated layer on the surface of the needle rod in the compression process, so that the conductivity is influenced. The larger the difference, the smaller the wear; and the designed part in the needle tube is not beneficial to the protection of the gold-plated layer in the tube and the stability of the electrical conductivity.
The Chinese patent application numbers are: 201621402564.9, application date is 2016, 12, 20, publication date is: year 2017, month 08, 18, with patent names: the utility model provides a test needle, this utility model discloses a test needle for can avoid appearing breaking in the twinkling of an eye and causing the problem of outage in the twinkling of an eye between needle axle and the needle tubing in solving prior art's test needle. The embodiment of the utility model provides an include: the spring is arranged in the needle tube; the needle tube comprises a testing open end and a bottom open end; the needle shaft includes a test head and a tail end; the testing head extends out of the testing opening end, and the tail end is sleeved in the needle tube; the tail end is provided with a metal rod which penetrates through the spring and extends to the bottom opening end. In the test needle in the embodiment, current directly passes through the needle shaft and needs to pass through the needle tube, so that the problem of instant power failure caused by instant disconnection of the needle shaft and the needle tube due to the fact that the current flows away from the needle shaft and the needle tube is completely avoided.
The above patent document discloses a test pin, but the utility model is relatively easy to break, and has a wear resistance and poor conductivity, which cannot prolong the service life.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a difficult fracture, live time is permanent, stand wear and tear, the good one kind of electric conductive property can increase of service life stand wear and tear test needle.
In order to realize the purpose of the utility model, the utility model provides a wear-resistant test needle capable of prolonging the service life, which comprises a needle body and a needle tube, wherein the needle body comprises a needle head, a needle rod and a needle holder, the needle tube is provided with a spring, the needle holder is inserted in the needle tube, the inner diameter of the needle tube is 1.10 mm-1.2 mm, and the diameter of the needle rod is 0.80 mm-0.88 mm; the needle holder is cylindrical, and the bottom edge of the needle holder and the two side edges of the needle holder form a circular angle respectively.
An insertion type tail needle is arranged at the bottom of the needle holder.
The inner diameter of the needle tube is 1.15 mm.
The diameter of the needle rod is 0.88 mm.
The length of the needle holder is equal to or less than 3.8 mm.
The length of the needle rod is 7.5 mm; the length of the needle holder is 0.2 mm-3.8 mm.
The length of the needle body is 9.7 mm-12.5 mm; the free length of the spring is 22 mm-24.8 mm.
The length of the inserted tail needle is 0.3 mm-1.0 mm.
The utility model has the advantages that 1) the utility model shortens the length of the testing needle head, increases the length of the spring, and prolongs the service life of the testing needle; 2) the utility model increases the inner diameter of the test needle tube, reduces the diameter of the needle rod of the needle, and the larger the difference between the inner diameter of the needle tube and the diameter of the needle rod is, the smaller the abrasion is; 3) the utility model discloses increase the circular angle of needle support part to reduce the wearing and tearing of gold-plated layer in the geminate transistors, the syringe needle tail end changes bayonet (inserts the spring hole) and can guide the direction of movement when the syringe needle compression, can not wear and tear the inside pipe wall gold-plated layer, improves the contact performance of syringe needle and spring simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a wear-resistant test pin with an extended service life according to the prior art of the embodiment of the present invention;
FIG. 2 is a schematic structural view of a wear-resistant test pin with an extended service life according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a wear-resistant test pin with an extended service life according to another embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 1 | |
34 | |
| 2 | |
35 | |
| 3 | |
36 | |
| 31 | |
4 | |
| 32 | The first side edge | 5 | |
| 33 | |
6 | Spring |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a but increase of service life stand wear and tear test needle.
Referring to fig. 1, in the prior art, the test needle includes a needle body and a needle tube, the needle body includes a needle head 1, a needle rod 2, and a needle holder 3, and the needle holder is inserted into the needle tube; a spring is arranged in the needle tube.
In the prior art, the total length of the needle body is longer, the compression stroke is overlarge, the compression ratio of the spring is also overlarge, and the spring is easy to break.
The existing test needle has no anti-abrasion design, and the larger the difference value between the inner diameter of the needle tube and the diameter of the needle rod is, the smaller the abrasion is; in the prior art, the difference value between the inner diameter of the needle tube and the diameter of the needle rod 2 is too small, and the needle body easily abrades the gold-plated layer on the surface of the needle rod in the compression process, so that the conductivity is influenced. The needle support angle 36 formed by the needle support 3 part is not a round angle, which is not beneficial to the protection of the gold-plated layer in the tube; the needle holder 3 has no tail needle design, which is not favorable for the stability of the conductive performance.
Fig. 2 and 3 show that, in an embodiment of the present invention, the wear-resistant test needle with a prolonged service life includes a needle body and a needle tube 5, the needle body includes a needle head 1, a needle rod 2 and a needle holder 3, the needle tube 5 is provided with a spring 6, the needle holder 3 is inserted into the needle tube 5, the inner diameter of the needle tube 5 is 1.10mm to 1.2mm, and the diameter of the needle rod 2 is 0.80mm to 0.88 mm; the needle holder 3 is cylindrical, and the bottom edge of the needle holder 3 and two side edges of the needle holder 3 form a circular angle respectively.
In this embodiment, the two sides include a first side 32 and a second side 33, the bottom 31 of the needle holder 3 and the first side 32 form a needle holder angle of a first circular angle 34, and the bottom 31 and the second side 33 form a needle holder angle of a second circular angle 35.
In this embodiment, in order to improve test needle test life-span, can increase spring length through shortening the length of testing the needle body. If the needle body shortens 1mm every time, the spring increases 1mm, can improve the test needle 1 times test life, and the needle body shortens 2mm, and the spring increases 2mm, can improve 2 times test life, so on, can reach 4.8 times test life at most.
Preferably, the length of the needle body is 9.7 mm-12.5 mm; the free length of the spring 6 is 22 mm-24.8 mm
Of course, according to the actual conditions, the length of the needle body can be actually reduced, and the length of the spring is increased, so that the service life of the test needle is prolonged.
In this embodiment, the utility model has the design of but increase of service life stand wear and tear structure.
In this embodiment, the bottom of the needle holder 3 is provided with an insertion-type tail needle 4.
In this embodiment, preferably, the length of the insertion type tail needle 4 is 0.3mm to 1.0 mm;
in this embodiment, further, it is preferable that the inner diameter of the needle tube 5 is 1.15 mm;
in this embodiment, further, it is preferable that the needle bar 2 has a diameter of 0.88 mm;
in this embodiment, the length of the needle holder 3 is preferably equal to or less than 3.8 mm.
In this embodiment, further, it is preferable that the length of the needle bar 2 is 7.5 mm; the length of the needle holder 3 is 0.2 mm-3.8 mm.
In this embodiment, compared with the prior art, the inner diameter of the test needle tube 5 is increased, the inner diameter of the needle tube 5 is changed from 1.09mm to 1.15mm, the diameter of the needle rod 3 (compressible part) of the needle body is reduced, and the inner diameter is changed from 0.90mm to: 0.88mm (or less), so that the difference between the inner diameter of the needle tube 5 and the diameter of the needle rod 2 is changed from 1.09mm-0.90mm to 0.19 mm: 1.15mm-0.88mm (or less) to 0.27mm (or more), the greater the difference between the inside diameter of the needle cannula 5 and the diameter of the needle shaft 2, the less wear (or no wear).
In this embodiment, the needle holder angle formed at the needle holder 3 is a circular angle to reduce the wear to the gold plating layer in the needle tube 5; the tail end of the needle body is provided with an inserted tail needle 4, the inserted tail needle 4 is inserted into an inner hole of the spring 6 to guide the moving direction of the needle head when the needle head is compressed, a gold-plated layer on the inner wall of the needle tube 5 cannot be abraded, and meanwhile, the contact performance of the needle body and the spring 6 is improved.
The utility model discloses can make the test needle improve more than 300 ten thousand on the basis of the current test needle maximum life 100 ten thousand in the world, can increase of service life wear resistance can begin to appear the wearing and tearing condition by present 5 ten thousand, improve more than 8 ten thousand by a wide margin. The thickness of the gold-plated needle body can be reduced from 40U 'to 20U', the cost of gold-plating is greatly reduced by 50%, and the product is more durable.
The utility model discloses can improve the test life of test needle by a wide margin, improve the electric conductive property and the stability ability of test needle.
It is only above the preferred embodiment of the utility model, be suitable for ICT test pin, function test pin, high-power test pin, PCB test pin, semiconductor test pin (IC test pin).
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, all under the inventive concept, utilize the equivalent structure transformation made by the contents of the specification and the drawings, or directly/indirectly use in other related technical fields all included in the patent protection scope of the present invention.
Claims (8)
1. The utility model provides a but extension life stand wear and tear test needle, includes needle body and needle tubing, the needle body includes syringe needle, needle bar and needle support, the needle tubing is provided with the spring, the needle holds in the palm pegs graft in this needle tubing its characterized in that: the inner diameter of the needle tube is 1.10 mm-1.2 mm, and the diameter of the needle rod is 0.80 mm-0.88 mm; the needle holder is cylindrical, and the bottom edge of the needle holder and the two side edges of the needle holder form a circular angle respectively.
2. The extended life wear-resistant test pin of claim 1, wherein: an insertion type tail needle is arranged at the bottom of the needle holder.
3. The extended life wear-resistant test needle according to claim 1 or 2, wherein: the inner diameter of the needle tube is 1.15 mm.
4. The extended life wear-resistant test pin of claim 3, wherein: the diameter of the needle rod is 0.88 mm.
5. The extended life wear-resistant test pin of claim 1, wherein: the length of the needle holder is equal to or less than 3.8 mm.
6. The extended life wear-resistant test pin of claim 5, wherein: the length of the needle rod is 7.5 mm; the length of the needle holder is 0.2 mm-3.8 mm.
7. The extended life wear-resistant test pin of claim 1, wherein: the length of the needle body is 9.7 mm-12.5 mm; the free length of the spring is 22 mm-24.8 mm.
8. The extended life wear-resistant test pin of claim 2, wherein: the length of the inserted tail needle is 0.3 mm-1.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022243488.4U CN213210242U (en) | 2020-10-10 | 2020-10-10 | Wear-resistant test needle capable of prolonging service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022243488.4U CN213210242U (en) | 2020-10-10 | 2020-10-10 | Wear-resistant test needle capable of prolonging service life |
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| Publication Number | Publication Date |
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| CN213210242U true CN213210242U (en) | 2021-05-14 |
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| CN202022243488.4U Active CN213210242U (en) | 2020-10-10 | 2020-10-10 | Wear-resistant test needle capable of prolonging service life |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI815474B (en) * | 2021-05-28 | 2023-09-11 | 日商日本麥克隆尼股份有限公司 | Probe |
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2020
- 2020-10-10 CN CN202022243488.4U patent/CN213210242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI815474B (en) * | 2021-05-28 | 2023-09-11 | 日商日本麥克隆尼股份有限公司 | Probe |
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