CN215116426U - Double-end stationary flow test probe - Google Patents
Double-end stationary flow test probe Download PDFInfo
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- CN215116426U CN215116426U CN202120318793.7U CN202120318793U CN215116426U CN 215116426 U CN215116426 U CN 215116426U CN 202120318793 U CN202120318793 U CN 202120318793U CN 215116426 U CN215116426 U CN 215116426U
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Abstract
The utility model discloses a double-end stationary flow test probe, include: the needle tube is provided with cavities at two ends; the first needle is connected with one end of the needle tube, a first cavity is formed at one end of the first needle, the first cavity and the cavity at one end of the needle tube form a first accommodating area, and a first spring is arranged in the first accommodating area; the second needle head is connected with the other end of the needle tube, a second cavity is formed in one end of the second needle head, a second containing area is formed by the second cavity and the cavity in the other end of the needle tube, and a second spring is arranged in the second containing area. The utility model discloses the whole equipment design of probe has reduced the swing of syringe needle and spring, avoids the fixed deformation of needle tubing, guarantees test data transmission's stability and test data's accuracy.
Description
Technical Field
The utility model belongs to the technical field of the test component, specifically speaking relates to a double-end stationary flow test probe.
Background
During the production process of the printed circuit board, an electrical test is 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 probe head type in the present on-line test equipment has different requirements according to different test points, and has single-head single-action, double-head double-action and the like, and the double-head double-action test probe often has high mistest rate of test data, unstable test transmission and other factors caused by the swinging of the probe head in the test process.
Disclosure of Invention
The utility model aims at providing a double-end stationary flow test probe has solved current double-end double acting test probe and has leaded to the high, the unstable problem of test transmission of test data misdetection rate because the syringe needle swing in the testing process.
In order to solve the technical problem, the utility model discloses a double-end stationary flow test probe, include:
a needle tube, both ends of which are provided with cavities;
the first needle is connected with one end of the needle tube, a first cavity is arranged at one end of the first needle, the first cavity and the cavity at one end of the needle tube form a first accommodating area, and a first spring is arranged in the first accommodating area;
and the second needle head is connected with the other end of the needle tube, one end of the second needle head is provided with a second cavity, the second cavity and the cavity at the other end of the needle tube form a second accommodating area, and a second spring is arranged in the second accommodating area.
The utility model discloses technical scheme's characteristics still lie in:
further, the middle position of the needle tube is of a solid structure.
Furthermore, steps are respectively arranged at two ends of the needle tube.
Furthermore, one end of the first needle head connected with the needle tube is provided with a first inner step.
Furthermore, a second inner step is arranged at one end of the second needle head connected with the needle tube.
Furthermore, the two steps are mutually clamped with the first inner step and the second inner step respectively and are fixed in a knife seal extrusion mode.
Further, the contact surface of the first spring and the top end of the first cavity is a plane and/or a slope.
Further, the contact surface of the second spring and the top end of the second cavity is in plane and/or inclined surface contact.
Furthermore, the top of the first needle head is in a conical shape, an arc shape or a sawtooth shape.
Furthermore, the top of the second needle head is in a conical shape, an arc shape or a sawtooth shape.
Compared with the prior art, the utility model discloses can obtain including following technological effect:
1) the utility model discloses a double-end stationary flow test probe, install first syringe needle and second syringe needle outside the syringe needle, reduced the swing of syringe needle, promoted the stability of test, guaranteed the accuracy of test data;
2) the utility model adopts two independent springs with reduced length, rather than connecting a long spring between two needles in the prior art, thereby avoiding the influence of swing or excessive deformation on the stability of test data in the process of extruding the spring and ensuring the accuracy of the test data;
3) the utility model discloses needle tubing intermediate position design is solid construction, fixes the needle tubing mid portion on the tool during use, avoids fixing the needle tubing that causes to warp, avoids scrapping of test probe, guarantees the stability of test and the accuracy of test data.
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 an exploded view of the dual head current stabilization test probe of the present invention;
FIG. 2 is a cross-sectional view of the dual-ended flow stabilization test probe of the present invention;
fig. 3 is an assembly view of the double-ended steady flow test probe of the present invention.
In the figure, 1, a needle tube, 101, a cavity, 102, a step, 2, a first needle, 201, a first cavity, 202, a first inner step, 3, a first spring, 4, a second needle, 401, a second cavity, 402, a second inner step, 5, and a second spring.
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 only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, 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 double-end stationary flow test probe, as shown in figure 1, 2 and 3, include:
the needle tube 1 is provided with cavities 101 at two ends of the needle tube 1, and the middle position of the needle tube 1 is of a solid structure;
the first needle head 2 is connected with one end of the needle tube 1, one end of the first needle head 2 is provided with a first cavity 201, the first cavity 201 and the cavity 101 at one end of the needle tube 1 form a first accommodating area, and a first spring 3 is arranged in the first accommodating area;
and the second needle head 4 is connected with the other end of the needle tube 1, one end of the second needle head 4 is provided with a second cavity 401, the second cavity 401 and the cavity 101 at the other end of the needle tube 1 form a second accommodating area, and a second spring 5 is arranged in the second accommodating area.
During the use, fix the mid portion of 1 pipe shaft of needle tubing on the tool, solid design in the middle of 1 needle tubing is to cause 1 pipe shaft of needle tubing to warp to influence test stability when avoiding fixing on the tool, first syringe needle 2 is the test point on the contact tool, such design need not change the needle welding syringe needle at every turn, the convenient change is used, second syringe needle 4 contacts with test product PAD when the tool pushes down, test can, and the operation is thus simple, the problem of current double-end double acting test probe in the testing process because the syringe needle swing leads to test data misdetection rate high, test transmission is unstable has been solved.
It should be noted that:
1) the utility model arranges the first needle 2 and the second needle 4 outside the needle tube 1, reduces the swing of the needles, improves the stability of the test data and ensures the accuracy of the test data;
2) the utility model adopts two independent springs with reduced length, rather than connecting a long spring between two needles in the prior art, thereby avoiding the influence of swing or excessive deformation on the stability of test data in the process of extruding the spring and ensuring the accuracy of the test data;
3) the utility model discloses 1 intermediate position of needle tubing designs to solid construction, fixes 1 mid portion of needle tubing on the tool during use, avoids fixing to be that the needle tubing 1 that causes warp, avoids scrapping of test probe, and increase of service life guarantees the stability of test and the accuracy of test data simultaneously.
As shown in fig. 1, 2 and 3, in the double-ended steady flow test probe of the present invention, steps 102 are respectively disposed at two ends of a needle tube 1, a first inner step 202 is disposed at one end of a first needle 2 connected to the needle tube 1, one of the steps 102 and the first inner step 202 are mutually clamped and fixed by a knife seal extrusion manner; the end of the second needle 4 connected with the needle tube 1 is provided with a second inner step 402, and the other step 102 and the second inner step 402 are mutually clamped and fixed in a knife seal extrusion way.
The utility model discloses utilize step screens, sword to seal extrusion mode and adorn first syringe needle 2 and second syringe needle 4 outside needle tubing 1, reduced the swing of syringe needle, promoted test data's stability, guarantee test data's accuracy.
As shown in fig. 1, 2 and 3, in the double-ended steady flow test probe of the present invention, the contact surface of the first spring 3 and the top end of the first cavity 201 is a plane and/or an inclined plane; the second spring 5 is in plane and/or inclined contact with the top end of the second cavity 402.
Specifically, the contact surface of the first spring 3 and the top end of the first cavity 201 is in inclined surface contact, and the contact surface of the second spring 5 and the top end of the second cavity 402 is in inclined surface contact, so that the stability of data transmission is improved. When the first spring 3 is in plane contact with the contact surface at the top end of the first cavity 201 and the second spring 5 is in plane contact with the contact surface at the top end of the second cavity 402, the connection can be used in electronic equipment with low electrical conductivity requirements.
In a more specific embodiment, the top of the first needle 2 is conical, circular-arc or saw-toothed; the top of the second needle head 4 is in a conical shape, an arc shape or a sawtooth shape. Different shapes are set according to the component to be tested to ensure stable contact resistance.
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 double-ended steady flow test probe, comprising:
the needle tube (1), both ends of the needle tube (1) are provided with cavities (101);
the first needle (2) is connected with one end of the needle tube (1), one end of the first needle (2) is provided with a first cavity (201), the first cavity (201) and the cavity (101) at one end of the needle tube (1) form a first accommodating area, and a first spring (3) is arranged in the first accommodating area;
the second needle head (4) is connected with the other end of the needle tube (1), a second cavity (401) is formed in one end of the second needle head (4), the second cavity (401) and the cavity (101) in the other end of the needle tube (1) form a second containing area, and a second spring (5) is arranged in the second containing area.
2. The double-ended flow stabilizing test probe according to claim 1, wherein the middle position of the needle tube (1) is a solid structure.
3. The double-ended flow stabilizing test probe according to claim 1, wherein steps (102) are respectively provided at both ends of the needle tube (1).
4. The double-ended flow stabilizing test probe according to claim 3, wherein the end of the first needle (2) connected to the needle tube (1) is provided with a first inner step (202).
5. The double-ended flow stabilizing test probe according to claim 4, wherein the end of the second needle (4) connected to the needle tube (1) is provided with a second inner step (402).
6. The double-ended flow-stabilizing test probe according to claim 5, wherein two of the steps (102) are mutually engaged with the first inner step (202) and the second inner step (402), respectively, and are fixed by knife seal pressing.
7. The double-ended flow stabilizing test probe according to claim 1, wherein the contact surface of the first spring (3) with the top end of the first cavity (201) is flat and/or inclined.
8. The double-ended flow stabilizing test probe according to claim 1, wherein the contact surface of the second spring (5) with the top end of the second cavity (401) is flat and/or inclined.
9. The double-ended flow stabilization test probe according to claim 1, wherein the top of the first probe head (2) is conical, circular arc or saw-toothed.
10. The double-ended flow stabilization test probe according to claim 1, wherein the top of the second needle head (4) is conical, circular arc or saw-toothed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120318793.7U CN215116426U (en) | 2021-02-04 | 2021-02-04 | Double-end stationary flow test probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120318793.7U CN215116426U (en) | 2021-02-04 | 2021-02-04 | Double-end stationary flow test probe |
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| Publication Number | Publication Date |
|---|---|
| CN215116426U true CN215116426U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120318793.7U Active CN215116426U (en) | 2021-02-04 | 2021-02-04 | Double-end stationary flow test probe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115184652A (en) * | 2022-07-06 | 2022-10-14 | 渭南木王智能科技股份有限公司 | Slender steady-flow test probe |
| CN115290941A (en) * | 2022-10-08 | 2022-11-04 | 深圳市美锐精密电子有限公司 | PCB hole copper four-wire test needle and processing method thereof |
-
2021
- 2021-02-04 CN CN202120318793.7U patent/CN215116426U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115184652A (en) * | 2022-07-06 | 2022-10-14 | 渭南木王智能科技股份有限公司 | Slender steady-flow test probe |
| CN115290941A (en) * | 2022-10-08 | 2022-11-04 | 深圳市美锐精密电子有限公司 | PCB hole copper four-wire test needle and processing method thereof |
| CN115290941B (en) * | 2022-10-08 | 2022-12-27 | 深圳市美锐精密电子有限公司 | PCB hole copper four-wire test needle and processing method thereof |
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Effective date of registration: 20220224 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. |