CN214374932U - Probe device and probe device set - Google Patents
Probe device and probe device set Download PDFInfo
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- CN214374932U CN214374932U CN202120017604.2U CN202120017604U CN214374932U CN 214374932 U CN214374932 U CN 214374932U CN 202120017604 U CN202120017604 U CN 202120017604U CN 214374932 U CN214374932 U CN 214374932U
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- needle
- needle tube
- central axis
- block
- tail
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Abstract
The utility model discloses a probe device and probe device group. The probe device comprises a needle head, a needle tube, a needle tail and an elastic body, wherein the needle head and the needle tail are used for receiving and sending current signals, and the elastic body is arranged in the needle tube and is positioned between the needle head and the needle tail. The needle head and the needle tail are respectively provided with an electric connection part, and each electric connection part is provided with a convex block and is contacted with the inner wall of the needle tube, so that the probe keeps a communicated state. Set up the central axis extension line of skew needle tubing with the afterbody on the backshank, when letting the probe device use side by side, can shorten the distance between the adjacent probe, and then be applicable to the encapsulation subassembly that more pins change.
Description
Technical Field
The present invention relates to a probe, and more particularly to a probe with a needle head and a needle tail having a special structure to increase the stability of the probe.
Background
Probe technology is an indispensable part of the technology industry, and probes are widely used in the related fields of current connection, especially in high-technology devices such as semiconductors or chips, which are subjected to some tests and inspections to ensure the yield.
One of the current testing methods in the market is to use a semiconductor testing apparatus to detect the conductivity and related data of the object a. As shown in fig. 7 and 8, the testing device includes a needle 91, a tube 92, and a needle tail 94, wherein the tube 92 is connected to the needle 91 and the needle tail 94 by an elastic body 95. When needle 91 touches subject a, inner elastic body 95 is pressed, and needle 91 and needle tail 94 are deflected and touch inner wall 93 of needle tube 92. At this time, the needle tail 94 receives the current signal, transmits the current signal to the needle 91 through the needle tube 92, and transmits the current signal to the object a to be tested through the needle 91. However, the needle 91 and the needle tail 94 in the prior art do not contact the needle tube 92 reliably when they are deflected, which results in unstable transmission of current signals and affects the quality of the test, resulting in poor testing effect.
In view of the above, a better solution is proposed, which is an urgent problem to be solved in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a probe device, and it can the steady state of intercommunication, increase stability.
To achieve the above object, the present invention provides a probe apparatus having:
a needle tube;
a needle movably disposed on the needle tube, and having:
a needle body part which is provided with a tip end, and the tip end protrudes out of the needle tube; and
the first electric connection part is positioned in the needle tube and is adjacently connected with the needle body part, and the first electric connection part is contacted with the inner wall of the needle tube to form electric connection;
a needle tail movably disposed on the needle tube and having:
a tail body part which is positioned outside the needle tube and can move into the needle tube;
the second electric connection part is positioned in the needle tube and is adjacently connected with the tail body part, and the second electric connection part is contacted with the inner wall of the needle tube to form electric connection;
an elastic body is positioned in the needle tube and is connected with the needle head and the needle tail.
In the probe apparatus, the first electrical connection portion has a first protrusion protruding eccentrically from the central axis of the needle tube to contact the inner wall of the needle tube; and the second electric connection part is provided with a second protruding block which is eccentrically protruded relative to the extension line of the central axis of the needle tube and contacts the inner wall of the needle tube.
In the probe apparatus, the first protrusion block has a circular cross section, and the extension line of the central axis of the needle tube does not pass through the center of the first protrusion block; the section of the second protruding block is circular, and the extension line of the central axis of the needle tube does not pass through the circle center of the second protruding block.
In the probe apparatus, the first protrusion block has an arcuate cross-section, and a central axis of the needle tube extends through a center of the first protrusion block; the section of the second convex block is arc-shaped, and the extension line of the central axis of the needle tube passes through the center of the circle of the second convex block.
In the probe apparatus, the first electrical connection portion has a first connection block fixedly disposed between the probe body portion and the first protrusion block; and the second electric connection part is provided with a second connection block which is fixedly arranged between the tail body part and the second protruding block.
In the probe apparatus, the diameter of the first connecting block is smaller than the inner diameter of the needle tube; and the diameter of the second connecting block is smaller than the inner diameter of the needle tube.
As with the probe device described above, the extension of the central axis of the tail portion is offset from the extension of the central axis of the needle cannula.
Therefore, the utility model has the advantages that the needle head and the needle tail contact with the inner wall of the needle tube. Thus, the needle and the needle tail need not be deflected during the squeezing process, and current can be passed through the probe device.
The present invention further provides a probe device set, which has two probe devices as described above, and the extension line of the central axis of the tail portion of each probe device deviates from the extension line of the central axis of the needle tube; in the two probe devices, the distance between the central axis extension lines of the two needle tubes is larger than that between the central axis extension lines of the two tail parts.
Drawings
Fig. 1 is a schematic cross-sectional view of a probe apparatus according to a first embodiment of the present invention.
Fig. 2 is an enlarged view of the needle head and the needle tail of the first embodiment of the probe device of the present invention.
Fig. 3 is a schematic cross-sectional view of a probe apparatus according to a second embodiment of the present invention.
Fig. 4 is an enlarged view of a needle head and a needle tail of a second embodiment of the probe device of the present invention.
Fig. 5 is a schematic cross-sectional view of a probe apparatus set according to the present invention.
Fig. 6 is an enlarged view of the needle head and the needle tail of the probe device set of the present invention.
Fig. 7 is a cross-sectional view of the prior art.
FIG. 8 is a cross-sectional view of a prior art in use.
10,91 parts of needle
11: the needle body
111: tip
12,12A first electrical connection portion
121,121A first projection
122,122A first connecting block
20,92 needle tube
21,93 inner wall
30,94 parts of needle tail
31,31B tail body part
32,32A second electrical connection
321,321A second projection
322,322A second connecting block
40,95: elastomer
A is the tested object
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the drawings and the accompanying drawings to further illustrate the technical means adopted to achieve the objects of the present invention.
Referring to fig. 1 and 2, the present invention provides a probe apparatus for testing the yield of electronic products such as chips and circuit boards.
In the first embodiment of the present invention, the probe device has a needle 10, a needle tube 20, a needle tail 30, and an elastic body 40. The needle 10 is movable in the needle tube 20 and has a needle portion 11 and a first electrical connection portion 12. The needle body 11 has a tip 111 protruding from the needle tube 20, the tip 111 selectively contacts the object a, and when the tip 111 contacts the object a, the current can be transmitted from the probe apparatus to the object a or from the object a to the probe apparatus. The first electrical connection portion 12 is located in the needle tube 20 and has a first protrusion 121 and a first connection block 122. The first protrusion 121 protrudes eccentrically with respect to the extension of the central axis of the needle tube 20 and contacts the inner wall 21 of the needle tube 20, so that the first protrusion 121 contacts the inner wall 21 of the needle tube 20 to form an electrical connection and allow current to flow between the needle 10 and the needle tube 20. The first connecting block 122 is fixedly disposed between the needle portion 11 and the first protrusion 121, but since the diameter of the first connecting block 122 is smaller than the inner diameter of the needle tube 20 and the center of the first connecting block 122 is located on the central axis of the needle tube 20 and extends on the line, the first connecting block 122 does not contact with the needle tube 20.
The needle tail 30 is movably disposed on the needle tube 20 and has a tail portion 31 and a second electrical connection portion 32. The tail portion 31 is located outside the barrel 20 and is capable of moving into the barrel 20 when squeezed, and the second electrical connection 32 is located inside the barrel 20 and is adjacent to the tail portion 31. The second electrical connection portion 32 has a second protrusion 321 and a second connection block 322. The second protrusion 321 is eccentrically protruded with respect to the extension line of the central axis of the needle tube 20 to contact the inner wall 21 of the needle tube 20 and to be electrically connected with the inner wall 21 of the needle tube 20. The second connecting block 322 is fixedly disposed between the tail portion 31 and the second protruding block 321, and the diameter of the second connecting block 322 is smaller than the inner diameter of the needle tube 20, and the center thereof is located on the central axis of the needle tube 20 and extends on the line, so that the second connecting block 322 does not contact with the needle tube 20.
In the first embodiment, the cross-section of the first protrusion block 121 is circular, and the extension line of the central axis of the needle tube 20 does not pass through the center of the first protrusion block 121. Since the radius of the first protrusion 121 is larger than the radius of the first connecting block 122, when the first protrusion 121 is disposed on the first connecting block 122, the first protrusion 121 protrudes from the first electrical connection portion 12, and the first protrusion 121 contacts the inner wall 21 of the needle tube 20; the second projection 321 is similar to the first projection 121, and the second projection 321 has a larger cross-sectional area than the second connecting piece 322, thereby contacting the second projection 321 with the inner wall 21 of the needle tube 20.
In other embodiments, the radius of the first protruding block and the radius of the second protruding block are not limited, and the radius of the first protruding block and the radius of the second protruding block can be different. If the radius of the first protruding block is equal to or smaller than the first connecting block 122, the center of the first protruding block is located at a position where the first protruding block protrudes from the inner wall 21 of the needle tube 20; if the radius of the second protrusion block is equal to or smaller than the second connecting block 322, the center of the second protrusion block is located at a position where the second protrusion block protrudes from the inner wall 21 of the needle tube 20.
In another embodiment, the first protruding block and the second protruding block are not limited to circular shapes. If the first projection is not circular, the centroid of the first projection deviates from the central axis of the needle tube 20 and extends on the line; if the second projection is not circular, the centroid of the second projection extends on-line offset from the central axis of the needle cannula 20. In addition, the first protruding block and the second protruding block can be different.
Please refer to fig. 3 and fig. 4. The second embodiment of the present invention has similar technical features to the first embodiment, and the difference lies in that in the second embodiment, the cross section of the first protrusion block 121A is semicircular, and the imaginary radius of the first protrusion block 121A is larger than the radius of the first connecting block 122A, and the extension line of the central axis of the needle tube 20 does not pass through the center of the first protrusion block 121A, so that the first protrusion block 121A protrudes from the first electrical connection portion 12A and contacts with the inner wall 21 of the needle tube 20; the second protrusion 321A is similar to the first protrusion 121A, and has a semicircular cross section, and the imaginary circle radius of the second protrusion 321A is larger than the circle radius of the second connecting block 322A, and the extension line of the central axis of the needle tube 20 does not pass through the center of the second protrusion 321A, so that the second protrusion 321A protrudes from the second electrical connection portion 32A and contacts with the inner wall 21 of the needle tube 20. Since the volume of the first protruding block 121A and the volume of the second protruding block 321A are relatively small, the consumption of materials is also reduced in manufacturing and production.
In other embodiments, if the radius of the imaginary circle of the first protrusion is larger than the radius of the circle of the first connecting block 122A, the extension line of the central axis of the needle tube 20 can pass through the center of the first protrusion. Similarly, if the radius of the imaginary circle of the second projection is larger than the radius of the circle of the second connecting piece 322A, the extension line of the central axis of the needle cannula 20 can pass through the center of the circle of the second projection.
In other embodiments, the imaginary circle radius of the first protruding block can be smaller than or equal to the circle radius of the first connecting block 122A. If the radius of the imaginary circle of the first protrusion block is smaller than or equal to the radius of the circle of the first connection block 122A, the extension line of the central axis of the needle tube 20 does not pass through the center of the circle of the first protrusion block; the radius of the imaginary circle of the second protrusion block can be smaller than or equal to the radius of the second connecting block 322A, and if the radius of the imaginary circle of the second protrusion block is smaller than or equal to the radius of the second connecting block 322A, the extension line of the central axis of the needle tube 20 does not pass through the center of the circle of the second protrusion block.
In another embodiment, the first protrusion is arcuate in cross-section, protrudes from the first electrical connection portion, and contacts the inner wall 21 of the needle tube 20. If the radius of the imaginary circle of the first protruding block is larger than the radius of the circle of the first connecting block 122A, the extension line of the central axis of the needle tube 20 can pass through the center of the row of the first protruding block, thereby allowing the first protruding block to protrude and contact the inner wall 21 of the needle tube 20; if the radius of the imaginary circle of the first protrusion is smaller than or equal to the radius of the circle of the first connecting block 122A, the extension line of the central axis of the needle tube 20 does not pass through the center of the row of the first protrusion, thereby allowing the first protrusion to protrude and contact the inner wall 21 of the needle tube 20. The second protrusion is similar to the first protrusion, has an arcuate cross section, protrudes from the second electrical connection portion, and contacts the inner wall 21 of the needle cannula 20. If the radius of the imaginary circle of the second protrusion block is larger than the radius of the second connecting block circle 322A, the extension line of the central axis of the needle tube 20 can pass through the center of the second protrusion block; if the imaginary radius of the second protrusion is smaller than or equal to the radius of the second connecting piece 322A, the extension line of the central axis of the needle tube 20 does not pass through the centroid of the second protrusion.
Please refer to fig. 5 and fig. 6. The utility model discloses still provide a probe device group, it has a plurality of being similar to before the probe device of any embodiment, in each probe device, the central axis extension of the skew needle tubing 20 of tail body portion 31B's central axis extension, and tail body portion 31B's sectional area is less than the sectional area of second connecting block 322, and the partial circumference that tail body portion 31B and second connecting block 322 were connected the face overlaps with the partial circumference that second connecting block 322 and tail body portion 31B were connected the face mutually, when letting two probe devices adjacent side by side, each tail body portion 31B's distance shortens.
In other embodiments of the probe device set, the distance between the tail portions is larger than the distance between the central axis extension lines of the needle tubes, so that the distance between the tail portions is elongated.
To sum up, the utility model discloses a probe device sets up first protrusion piece 121 and second protrusion piece 321 on syringe needle 10 and backshank 30 respectively, and each this protrusion piece and the contact of the inner wall 21 of needle tubing 20 let syringe needle 10, needle tubing 20 and backshank 30 keep the intercommunication. In order to deal with different objects A, the center of the tail body part 31 is deviated from the center of the needle tube 20, and the needle pitch between the probes is changed, so that the probe device can be suitable for packaging assemblies with more pin changes.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the equivalent embodiment without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (9)
1. A probe apparatus, comprising:
a needle tube;
a needle movably disposed on the needle tube, and having:
a needle body part which is provided with a tip end, and the tip end protrudes out of the needle tube; and
the first electric connection part is positioned in the needle tube and is adjacently connected with the needle body part, and the first electric connection part is contacted with the inner wall of the needle tube to form electric connection;
a needle tail movably disposed on the needle tube and having:
a tail body part which is positioned outside the needle tube and can move into the needle tube;
the second electric connection part is positioned in the needle tube and is adjacently connected with the tail body part, and the second electric connection part is contacted with the inner wall of the needle tube to form electric connection;
an elastic body is positioned in the needle tube and is connected with the needle head and the needle tail.
2. The probe apparatus of claim 1, wherein:
the first electric connection part is provided with a first protruding block which is eccentrically protruded relative to the central axis extension line of the needle tube and contacts the inner wall of the needle tube; and is
The second electric connection part is provided with a second protruding block which is eccentrically protruded relative to the central axis extension line of the needle tube and contacts the inner wall of the needle tube.
3. The probe apparatus of claim 2, wherein:
the section of the first protruding block is circular, and the extension line of the central axis of the needle tube does not pass through the center of the circle of the first protruding block; and is
The section of the second protruding block is circular, and the extension line of the central axis of the needle tube does not pass through the circle center of the second protruding block.
4. The probe apparatus of claim 2, wherein:
the section of the first protruding block is semicircular, and a central axis extension line of the needle tube passes through the center of the first protruding block; and is
The section of the second protruding block is semicircular, and the extension line of the central axis of the needle tube passes through the circle center of the second protruding block.
5. The probe apparatus of claim 2, wherein:
the section of the first convex block is arched, and the extension line of the central axis of the needle tube passes through the center of the circle of the first convex block; and is
The section of the second convex block is arc-shaped, and the extension line of the central axis of the needle tube passes through the center of the circle of the second convex block.
6. The probe apparatus according to any one of claims 1 to 5, wherein:
the first electric connection part is provided with a first connection block which is fixedly arranged between the needle body part and the first protruding block; and is
The second electric connection part is provided with a second connection block which is fixedly arranged between the tail body part and the second protruding block.
7. The probe apparatus of claim 6, wherein:
the diameter of the first connecting block is smaller than the inner diameter of the needle tube; and is
The diameter of the second connecting block is smaller than the inner diameter of the needle tube.
8. A probe device according to any one of claims 1 to 5 wherein the central axis extension of the tail portion is offset from the central axis extension of the needle cannula.
9. A probe device set characterized in that it has two probe devices according to any one of claims 1 to 7, and the central axis extension of the tail part of each probe device is deviated from the central axis extension of the needle tube; in the two probe devices, the distance between the central axis extension lines of the two needle tubes is larger than that between the central axis extension lines of the two tail parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017604.2U CN214374932U (en) | 2021-01-06 | 2021-01-06 | Probe device and probe device set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120017604.2U CN214374932U (en) | 2021-01-06 | 2021-01-06 | Probe device and probe device set |
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| Publication Number | Publication Date |
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| CN214374932U true CN214374932U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120017604.2U Active CN214374932U (en) | 2021-01-06 | 2021-01-06 | Probe device and probe device set |
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| CN (1) | CN214374932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117805592A (en) * | 2024-01-08 | 2024-04-02 | 安盈半导体技术(常州)有限公司 | Flexible medium chip test interface |
-
2021
- 2021-01-06 CN CN202120017604.2U patent/CN214374932U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117805592A (en) * | 2024-01-08 | 2024-04-02 | 安盈半导体技术(常州)有限公司 | Flexible medium chip test interface |
| CN117805592B (en) * | 2024-01-08 | 2024-06-07 | 安盈半导体技术(常州)有限公司 | Flexible medium chip test interface |
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