CN215116425U - Large-current test probe - Google Patents
Large-current test probe Download PDFInfo
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- CN215116425U CN215116425U CN202120317930.5U CN202120317930U CN215116425U CN 215116425 U CN215116425 U CN 215116425U CN 202120317930 U CN202120317930 U CN 202120317930U CN 215116425 U CN215116425 U CN 215116425U
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Abstract
The utility model discloses a heavy current test probe, include: an insulating tube; the six needle rods are uniformly distributed in the insulating tube along the circumferential direction, the needle tail parts of the needle rods are arranged on the first insulating fixing part through the first spring, the needle head parts of the needle rods are arranged on the second insulating fixing part through the second spring, the first insulating fixing part and the second insulating fixing part are respectively positioned at the upper end and the lower end of the insulating tube, and the needle heads and the needle tail parts of the needle rods extend out of the insulating tube; and the central large spring is positioned at the central position of the six needle bars, the upper end of the central large spring is sleeved on the first insulating fixing piece, and the lower end of the central large spring is sleeved on the second insulating fixing piece. The utility model discloses probe test stroke is through the distance control between two through-holes on first insulating mounting and the insulating mounting of second, and the needle bar is integrative needle body, and the electric current direct transmission need not transmit through the spring is indirect, can bear the heavy current test, and the testing process is stable simultaneously, and the misdetection rate is low.
Description
Technical Field
The utility model belongs to the technical field of the test part, specifically speaking relates to a heavy current test probe.
Background
In the process of producing the printed circuit board, an electrical test needs to be performed on the printed circuit board to determine whether electrical parameters (such as resistance, capacitance or inductance) of each component of the printed circuit board meet the standard requirements.
A common test method of a printed circuit board is to set test points on the printed circuit board, print solder paste on the surfaces of the test points, and directly contact the solder paste portions of the test points with probes through an automated test device or an online test device to obtain related electrical parameters.
The existing double-head double-acting probe generally comprises a needle head, a spring and a needle tube, and the probe has the defects that the current is unstable in the test process, the probe or test equipment is burnt out due to large current, and the test data misdetection rate is high.
Disclosure of Invention
The utility model aims at providing a heavy current test probe to current instability appears in the solution current probe in the test procedure, leads to probe or equipment to burn out, and the high problem of data misdetection rate.
In order to solve the technical problem, the utility model discloses a heavy current test probe, include:
an insulating tube;
the six needle rods are uniformly distributed in the insulating tube along the circumferential direction, the needle tail parts of the needle rods are arranged on the first insulating fixing part through the first spring, the needle head parts of the needle rods are arranged on the second insulating fixing part through the second spring, the first insulating fixing part and the second insulating fixing part are respectively positioned at the upper end and the lower end of the insulating tube, and the needle heads and the needle tail parts of the needle rods extend out of the insulating tube;
and the central large spring is positioned at the central position of the six needle bars, the upper end of the central large spring is sleeved on the first insulating fixing piece, and the lower end of the central large spring is sleeved on the second insulating fixing piece.
The utility model discloses a characteristics still lie in:
further, the insulating tube includes first insulating tube and second insulating tube, and first insulating tube passes through screw fixed connection with the second insulating tube.
Furthermore, the first insulating tube is of a cylindrical structure with an open lower end, a first bulge is arranged on the outer wall of the lower end of the first insulating tube, a central hole is formed in the upper central position of the first insulating tube, and six first small holes are uniformly formed in the upper end of the first insulating tube by taking the central hole as the circle center.
Furthermore, the second insulating tube is of a cylindrical structure with an open upper end, a second protrusion is arranged on the outer wall of the upper end of the second insulating tube, the first protrusion is fixedly connected with the second protrusion through screws, six second small holes are uniformly formed in the top of the lower end of the second insulating tube along the circumferential direction, and the second small holes are matched with the first small holes in position.
Furthermore, the needle head part and the needle tail part of the needle rod are both provided with bulges.
Further, the first insulation fixing piece comprises a first fixing block, a first connecting rod is fixed at the upper end of the first fixing block, a second connecting rod is fixed at the lower end of the first fixing block, six first through holes are uniformly formed in the first fixing block along the circumferential direction and are matched with the positions of the first small holes, first springs are arranged in the six first through holes, and the needle tail portions of the needle rods are sleeved in the first springs.
Furthermore, the first fixed block is arranged in the first insulating tube, and the part, sleeved in the first spring, of the needle tail of the needle rod penetrates through the first small hole and extends out of the first insulating tube; the first connecting rod penetrates through the central hole and extends out of the first insulating pipe.
Furthermore, the second insulating fixing piece comprises a second fixing block, a connecting rod is arranged at the upper end of the second fixing block, six second through holes are uniformly formed in the second fixing block along the axial direction, the positions of the second through holes correspond to those of the first through holes, second springs are arranged in the six second through holes, and the needle head portion of the needle rod is sleeved in the second springs.
Furthermore, the second fixing block is arranged in the second insulating tube, and the needle head part of the needle rod is sleeved in the second spring, and the part of the needle head part penetrates through the second small hole and extends out of the second insulating tube.
Furthermore, the upper end of the central large spring is sleeved on the second connecting rod, and the lower end of the central large spring is sleeved on the connecting rod.
Compared with the prior art, the utility model discloses a technological effect does: the utility model discloses heavy current test probe can test PCBA 6Pin Pin components and parts and the circular Pad point of PCB, and the test work stroke is through the distance control between the through-hole of the insulating mounting of first insulating mounting and second, and the needle bar is integrative needle body, and the direct transmission of electric current need not pass through the indirect transmission of spring, can bear the heavy current test, and test procedure is stable simultaneously, and the misdetection rate is low.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
FIG. 1 is a schematic view of the exploded structure of the high current test probe of the present invention;
FIG. 2 is an assembled view of the high current test probe of the present invention;
fig. 3 is a schematic structural diagram of a first insulating tube in the high-current test probe of the present invention;
fig. 4 is a schematic structural diagram of a second insulating tube in the high-current test probe of the present invention;
FIG. 5 is a schematic structural view of a needle bar in the high current test probe of the present invention;
fig. 6 is a schematic structural diagram of a first insulating fixing member in the high current test probe of the present invention;
fig. 7 is a schematic structural diagram of a second insulating fixing member in the high-current test probe of the present invention.
In the figure, 1, a needle rod, 101, a bulge, 2, a central big spring, 3, a first spring, 4, a second spring, 5, a first insulating pipe, 501, a first bulge, 502, a central hole, 503, a first small hole, 6, a second insulating pipe, 601, a second bulge, 7, a first insulating fixing piece, 701, a first fixing block, 702, a first connecting rod, 703, a second connecting rod, 704, a first through hole, 8, a second fixing block, 802, a connecting rod, 803 and a first through hole.
Detailed Description
The following embodiments will be described in detail with reference to the accompanying drawings, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, a fixed connection, a removable connection, or an integral connection or a removable arrangement. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
The utility model discloses a heavy current test probe, the structure is as shown in figure 1, include:
the insulating tube plays an insulating role and ensures the accuracy of a test result;
the six needle rods 1 are uniformly distributed in the insulating tube along the circumferential direction, the needle tail parts of the needle rods 1 are arranged on a first insulating fixing piece 7 through a first spring 3, the needle head parts of the needle rods 1 are arranged on a second insulating fixing piece 8 through a second spring 4, the first insulating fixing piece 7 and the second insulating fixing piece 8 are respectively positioned at the upper end and the lower end of the insulating tube, and the needle heads and the needle tail parts of the needle rods 1 extend out of the insulating tube;
and the central large spring 2 is positioned at the central position of the six needle bars 1, the upper end of the central large spring 2 is sleeved on the first insulating fixing piece 7, and the lower end of the central large spring 2 is sleeved on the second insulating fixing piece 8.
The utility model discloses heavy current test probe assembles the picture as shown in fig. 2, during the test, will the utility model discloses heavy current test probe assembles on test fixture, fixes 7 upper ends of first insulation mounting on test fixture, and the insulating tube upper end (the upper end of first insulating tube 5) is the stress point, and when the tool pushed down, the syringe needle part of each needle bar 1 corresponds a test PAD point, when pushing down the working stroke, the needle tail part of needle bar 1 exposes and contacts with the tool test point, tests the test point and obtains test data, judges the function of test product through test data.
As shown in fig. 1 and 2, the utility model discloses an among the heavy current test probe, the insulating tube includes first insulating tube 5 and second insulating tube 6, and first insulating tube 5 passes through screw fixed connection with second insulating tube 6.
As shown in fig. 3, the first insulating tube 5 is a cylindrical structure with an open lower end, a first protrusion 501 is disposed on an outer wall of the lower end of the first insulating tube 5, a central hole 502 is disposed at an upper central position of the first insulating tube 5, and six first small holes 503 are uniformly disposed at an upper end of the first insulating tube 5 by using the central hole 502 as a center.
Specifically, a central hole 502 is formed in the upper central position of the first insulating tube 5, so that the first insulating fixing member 7 can extend out of the first insulating tube 5, and a sufficient space is ensured for the expansion and contraction deformation of the central large spring 2; six first small holes 503 are uniformly formed in the upper end of the first insulating tube 5 by taking the central hole 502 as a circle center, each first small hole 503 is designed to sink to form an inner cavity, a certain working stroke is formed after the first small holes 503 are assembled with the needle tail part of the needle rod 1 and the first spring 3, each working stroke is the same, the needle tail part of the needle rod 1 is exposed to be in contact with a test point of a jig, the test point is tested to obtain test data, and the function of a test product is judged through the test data.
As shown in fig. 4, the second insulating tube 6 is a cylindrical structure with an open upper end, a second protrusion 601 is arranged on the outer wall of the upper end of the second insulating tube 6, the first protrusion 501 and the second protrusion 601 are fixedly connected by screws, so as to ensure stability, six second small holes (not shown in the figure) are uniformly arranged at the top of the lower end of the second insulating tube 6 along the circumferential direction, and the second small holes are adapted to the positions of the first small holes 503.
Specifically, six second small holes are uniformly formed in the top of the lower end of the second insulating tube 6 along the circumferential direction, the second small holes are matched with the first small holes in position, and the second small holes are used for enabling the needle head part of the needle rod 1 to extend out of the second insulating tube 6. Each second small hole is provided with a sinking design to form an inner cavity, a certain working stroke is formed after the needle part of the needle rod 1 and the second spring 4 are assembled, each working stroke is the same, the needle head part of each needle rod 1 corresponds to a test PAD point, when the needle head part is pressed to the working stroke, the needle tail part of the needle rod 1 is exposed to be contacted with a test point of a jig, the test point is tested to obtain test data, and the function of a test product is judged through the test data.
As shown in fig. 5, the utility model discloses an among the heavy current test probe, the needle part and the backshank part of needle bar 1 all are equipped with protruding 101, and the diameter of protruding 101 is greater than the diameter of first spring 3 and second spring 4, and protruding 101 plays spacing effect, guarantees the stability of electric current in the test procedure, prevents that probe or test equipment from damaging, ensures simultaneously that test data prepares, reduces the error.
As shown in fig. 6, the utility model discloses an among the heavy current test probe, first insulation mounting 7 includes first fixed block 701, the upper end of first fixed block 701 is fixed with head rod 702, the lower extreme of first fixed block 701 is fixed with second connecting rod 703, first fixed block 701 evenly is equipped with six first through-holes 704 along circumference, and suit with the position of first aperture 503, all be equipped with first spring 3 in six first through-holes 704, the needle tail part of needle bar 1 cup joints in first spring 3.
Further, the first fixing block 701 is disposed in the first insulating tube 5, and a portion of the needle tail of the needle rod 1 sleeved in the first spring 3 passes through the first small hole 503 and extends out of the first insulating tube 5; the first connecting rod 702 passes through the central hole 502 and extends out of the first insulating tube 5, and is fixed on the test fixture.
As shown in fig. 7, the utility model discloses an among the heavy current test probe, insulating mounting 8 of second includes second fixed block 801, and the upper end of second fixed block 801 is provided with connecting rod 802, evenly is equipped with six second through-holes 803 along the axial on the second fixed block 801, and the position of second through-hole 803 is corresponding with the position of first through-hole 703, all is equipped with second spring 4 in six second through-holes 803, and the syringe needle part of needle bar 1 cup joints in second spring 4.
Further, the second fixing block 801 is disposed in the second insulating tube 6, and a portion of the needle head portion of the needle rod 1 sleeved in the second spring 4 passes through the second small hole to extend out of the second insulating tube 6 to be in contact with the PAD point.
As shown in fig. 1, the upper end of the large central spring 2 is sleeved on the second connecting rod 703, and the lower end of the large central spring 2 is sleeved on the connecting rod 802. The central large spring 2 is used for buffering the instability of the test probe caused by excessive pressure under the first insulating fixing member 7 and/or the second insulating fixing member 8.
While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A high current test probe, comprising:
an insulating tube;
the six needle bars (1) are uniformly distributed in the insulating tube along the circumferential direction, needle tail portions of the needle bars (1) are arranged on a first insulating fixing piece (7) through first springs (3), needle head portions of the needle bars (1) are arranged on a second insulating fixing piece (8) through second springs (4), the first insulating fixing piece (7) and the second insulating fixing piece (8) are respectively located at the upper end and the lower end of the insulating tube, and the needle heads and the needle tail portions of the needle bars extend out of the insulating tube;
the central big spring (2) is located in six central positions of the needle rod (1), the upper end of the central big spring (2) is sleeved on the first insulating fixing piece (7), and the lower end of the central big spring (2) is sleeved on the second insulating fixing piece (8).
2. A high current test probe according to claim 1, wherein the insulating tubes comprise a first insulating tube (5) and a second insulating tube (6), and the first insulating tube (5) and the second insulating tube (6) are fixedly connected by screws.
3. The high-current test probe according to claim 2, wherein the first insulating tube (5) is a cylindrical structure with an open lower end, a first protrusion (501) is disposed on an outer wall of the lower end of the first insulating tube (5), a central hole (502) is formed at an upper central position of the first insulating tube (5), and six first small holes (503) are uniformly formed in an upper end of the first insulating tube (5) with the central hole (502) as a center.
4. A high-current test probe according to claim 3, wherein the second insulating tube (6) is a cylindrical structure with an open upper end, a second protrusion (601) is arranged on the outer wall of the upper end of the second insulating tube (6), the first protrusion (501) is fixedly connected with the second protrusion (601) through a screw, six second small holes are uniformly arranged at the top of the lower end of the second insulating tube (6) along the circumferential direction, and the second small holes are matched with the first small holes (503).
5. A high current test probe according to claim 1, wherein both the needle part and the needle tail part of the needle shaft (1) are provided with protrusions (101).
6. The high-current test probe as claimed in claim 4, wherein the first insulating fixing member (7) comprises a first fixing block (701), a first connecting rod (702) is fixed at the upper end of the first fixing block (701), a second connecting rod (703) is fixed at the lower end of the first fixing block (701), six first through holes (704) are uniformly formed in the first fixing block (701) along the circumferential direction and are matched with the positions of the first small holes (503), the first springs (3) are arranged in the six first through holes (704), and the needle tail portions of the needle rods (1) are sleeved in the first springs (3).
7. The high-current test probe according to claim 6, wherein the first fixing block (701) is disposed in the first insulating tube (5), and a portion of the needle tail of the needle bar (1) sleeved in the first spring (3) extends out of the first insulating tube (5) through the first small hole (503); the first connecting rod (702) passes through the central hole (502) and extends out of the first insulating pipe (5).
8. The high-current test probe according to claim 7, wherein the second insulating fixing piece (8) comprises a second fixing block (801), a connecting rod (802) is arranged at the upper end of the second fixing block (801), six second through holes (803) are uniformly arranged on the second fixing block (801) along the axial direction, the positions of the second through holes (803) correspond to the positions of the first through holes (704), the second springs (4) are arranged in the six second through holes (803), and the needle head portion of the needle rod (1) is sleeved in the second springs (4).
9. A high current test probe according to claim 8, wherein the second fixing block (801) is arranged in the second insulating tube (6), and the part of the needle head of the needle rod (1) sleeved in the second spring (4) passes through the second small hole and extends out of the second insulating tube (6).
10. The high-current test probe as claimed in claim 8, wherein the upper end of the large central spring (2) is sleeved on the second connecting rod (703), and the lower end of the large central spring (2) is sleeved on the connecting rod (802).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120317930.5U CN215116425U (en) | 2021-02-04 | 2021-02-04 | Large-current test probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120317930.5U CN215116425U (en) | 2021-02-04 | 2021-02-04 | Large-current test probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215116425U true CN215116425U (en) | 2021-12-10 |
Family
ID=79334322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120317930.5U Active CN215116425U (en) | 2021-02-04 | 2021-02-04 | Large-current test probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215116425U (en) |
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2021
- 2021-02-04 CN CN202120317930.5U patent/CN215116425U/en active Active
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Effective date of registration: 20220217 Address after: 519180 floor 1, No. 1, Yangqing street, Jing'an Town, Doumen District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Muwang Intelligent Technology Co.,Ltd. Address before: 710000 northwest corner of cross between Dongfeng Street and Shiquan Road, high tech Industrial Development Zone, Weinan City, Shaanxi Province Patentee before: WEINAN HI-TECH ZONE WOOD KING TECHNOLOGY Co.,Ltd. |