CN202196093U - Coaxial large current probe - Google Patents
Coaxial large current probe Download PDFInfo
- Publication number
- CN202196093U CN202196093U CN2011203251465U CN201120325146U CN202196093U CN 202196093 U CN202196093 U CN 202196093U CN 2011203251465 U CN2011203251465 U CN 2011203251465U CN 201120325146 U CN201120325146 U CN 201120325146U CN 202196093 U CN202196093 U CN 202196093U
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- CN
- China
- Prior art keywords
- probe
- needle shaft
- needle
- outer tube
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the technical field of probe type connectors, in particular to a coaxial large current probe, which comprises a spring, an inner tube, a limiting sleeve, an insulating sleeve, an outer tube and a needle shaft. The inner tube and the outer tube are hollow structures with two ends communicated with each other. The inner tube is sleeved outside the needle shaft, and the spring and the outer tube are sleeved outside the inner tube. The limiting sleeve and the insulation sleeve are hollow structures with each other, the limiting sleeve is sleeved outside the inner tube, and the insulation sleeve is sleeved outside the needle shaft for separating the needle shaft from the inner tube. The coaxial large current probe further comprises a probing head and a needle head, and the probing head is provided with a groove which is provided with internal threads. By adopting the technical scheme, the probing head, the needle head and the inner tube are connected together through threads, and the coaxial large current probe is simple in structure, low in cost, accurate in testing and easy to operate because users just need to contact the end face of a probing head with an object to be tested in testing. When the probing head is damaged, the users can dismount the probe for replacement, and other components can be used continuously, thereby reducing resource waste.
Description
Technical field
The utility model relates to probe-type connector technique field, specifically, relates to a kind of coaxial big current probe.
Background technology
At present big current probe has been widely used in instrument and has tested in the industry, is precision measurement resistance or the most frequently used sampling means of other electric signal.Usually; Detection port in instrument adopts the four-wire system mode to carry out the signal transmission, and wherein two leads are used to inject signal, and other two leads are used to feed back measuring-signal; Like this; In testing circuit, form two sampling circuits, one of them is circuit by way of compensation, be used for eliminating measuring circuit self internal resistance and and testee between contact resistance.
The open date is on 01 14th, 2009, and publication number is that 201181302 Chinese utility model patent relates to the probe technique field, refers in particular to a kind of coaxial isolated big current probe; It comprises syringe needle, needle shaft, outer tube, middle pipe and spring; Described syringe needle, outer tube, middle pipe all are the hollow-core constructions that two ends connect, and also comprise two insulation tubes, and insulation tube also is the hollow-core construction that two ends connect; The two ends of pipe during two insulation tubes are inserted in respectively; And with middle tube cavity wringing fit, the end that middle pipe is equipped with insulation tube is inserted in the syringe needle, and with syringe needle inner chamber wringing fit; The needle shaft therefrom integrally-built end that is combined into of pipe, syringe needle, two insulation tubes penetrates, and passes from the other end; The one-piece construction that needle shaft, middle pipe, syringe needle and two insulation tubes are combined into penetrates from outer tube one end, passes from the other end; Spring housing is on middle pipe, and both ends of the spring contacts with the outer tube end face with the syringe needle end face respectively.
Though the coaxial big current probe of said structure can be worked under big electric current, high frequency environment; And has long serviceable life; Decay in the time of can effectively reducing the signal transmission must guarantee during owing to test that syringe needle and probe end face touch testee simultaneously, but because the syringe needle area is less; Syringe needle and probe end face are not at grade; Slip off easily during test, cause and have only an end face contact testee, thereby cause test errors or the inaccurate situation of test value to happen occasionally.In addition, the probe of this kind structure, probe and syringe needle use frequent, damage easily, but other parts are not fragile,, can only all abandon the waste resource owing to can't dismantle in case probe and syringe needle damage.
Therefore, demand providing a kind of coaxial big current probe urgently, it is simple in structure, and cost is lower, operates easily during use, and test is accurate, and can change probe, reduces the wasting of resources.
Summary of the invention
The utility model has overcome shortcoming of the prior art, and a kind of coaxial big current probe is provided, and is simple in structure, reduces cost, and operates easily during use, and test is accurate, and can change probe, reduces the wasting of resources.
In order to solve the problems of the technologies described above, the utility model is realized through following technical scheme:
A kind of coaxial big current probe comprises spring, interior pipe, stop collar, insulation sleeve, outer tube and needle shaft, and interior pipe and outer tube are the hollow-core construction that two ends connect; Interior pipe box is located at the outside of needle shaft, the outside of pipe in spring and outer tube sleeve are located at, and stop collar and insulation sleeve are the hollow-core construction of perforation; The pipe outside in stop collar is sheathed on, insulation sleeve is sheathed on the needle shaft outside, and needle shaft and interior pipe are separated; Also comprise probe and syringe needle, probe is provided with groove, and groove is provided with internal thread; One end of syringe needle and needle shaft is affixed, and syringe needle and interior pipe are equipped with the external thread with screw-internal thread fit, probe respectively with syringe needle and interior pipe through being threaded.
Further, the bottom of groove is a taper shape.
Further, outer tube is provided with flange, and an end of spring props up flange end face, and the other end props up probe and offers a reeded end.
Further, the end face of probe is provided with blade tooth.
Further, needle shaft is the solid construction needle shaft.
Further, an end of pipe was provided with chamfering in needle shaft passed.
Further, the outside surface of spring, interior pipe, outer tube, needle shaft, probe and syringe needle is equipped with Gold plated Layer.
Compared with prior art, the beneficial effect of the utility model is:
The described a kind of coaxial big current probe of the utility model comprises spring, interior pipe, stop collar, insulation sleeve, outer tube and needle shaft, and interior pipe and outer tube are the hollow-core construction that two ends connect; Interior pipe box is located at the outside of needle shaft, the outside of pipe in spring and outer tube sleeve are located at, and stop collar and insulation sleeve are the hollow-core construction of perforation; The pipe outside in stop collar is sheathed on, insulation sleeve is sheathed on the needle shaft outside, and needle shaft and interior pipe are separated; Also comprise probe and syringe needle, probe is provided with groove, and groove is provided with internal thread; One end of syringe needle and needle shaft is affixed, and syringe needle and interior pipe are equipped with the external thread with screw-internal thread fit, probe respectively with syringe needle and interior pipe through being threaded.
The utility model adopts technique scheme, and probe and syringe needle, interior pipe are in the same place through being threaded, and is simple in structure, reduces cost, and only gets final product with the end face contact testee of will popping one's head in during test, and operation easily, test are accurately; When probe damages, can probe be pulled down replacing, miscellaneous part can continue to use, and reduces the wasting of resources.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the perspective view of a kind of coaxial big current probe of the utility model;
Fig. 2 is that the A-A of Fig. 1 is to cut-open view;
Fig. 3 is the decomposition texture synoptic diagram of a kind of coaxial big current probe of the utility model.
Wherein Fig. 1 to Fig. 3 includes:
1---probe;
2---spring;
3---interior pipe;
4---outer tube;
5---stop collar;
6---insulation sleeve;
7---needle shaft;
8---syringe needle;
9---blade tooth;
10---chamfering.
Embodiment
Embodiment 1:
To shown in Figure 3, the described a kind of coaxial big current probe of the utility model comprises spring 2, interior pipe 3, outer tube 4 and needle shaft 7 like Fig. 1, interior pipe 3 and the hollow-core construction of outer tube 4 for the two ends perforation, and interior pipe 3 is sheathed on needle shaft 7 outsides, forms coaxial needles.
Also comprise probe 1 and syringe needle 8, probe 1 is provided with groove, and groove is provided with internal thread, and syringe needle 8 is affixed with needle shaft 7, and syringe needle 8 and interior pipe 3 are provided with the external thread with screw-internal thread fit, probe 1 respectively with syringe needle 8 and interior pipe 3 through being threaded.
Bottom portion of groove is a taper shape.
Adopt the coaxial big current probe of this structure, can probe 1 part resistance be brought in the test result during test testee resistance, but because this part resistance is minimum, limited to the influence of test result, can ignore.
To pop one's head in and 1 be in the same place through being threaded with syringe needle 8, interior pipe 3, simple in structure, reduce cost, 1 end face of only will popping one's head in during test contact testee get final product, operation easily, test is accurate; When probe 1 damages, can probe 1 be pulled down replacing, miscellaneous part can continue to use, and reduces the wasting of resources.
Embodiment 2:
The technical scheme of present embodiment and embodiment 1 is roughly the same, and its difference is:
1 end face of popping one's head in is provided with blade tooth 9.Be difficult for sliping off handled easily between probe 1 and the testee when making test.
Embodiment 3:
The technical scheme of present embodiment and embodiment 2 is roughly the same, and its difference is:
An end of pipe 3 was provided with chamfering 10 in needle shaft 7 passed.Conveniently be connected with other equipment.
The utility model is not limited to above-mentioned embodiment; If the various changes of the utility model or distortion are not broken away from the spirit and the scope of the utility model; If these changes and distortion belong within the claim and equivalent technologies scope of the utility model, then the utility model also is intended to comprise these changes and distortion.
Claims (7)
1. a coaxial big current probe comprises spring, interior pipe, stop collar, insulation sleeve, outer tube and needle shaft, and said interior pipe and outer tube are the hollow-core construction that two ends connect; Pipe box is located at the outside of needle shaft in said, the outside of pipe in said spring and outer tube sleeve are located at, and stop collar and insulation sleeve are the hollow-core construction of perforation; The pipe outside in said stop collar is sheathed on, said insulation sleeve is sheathed on the needle shaft outside, and needle shaft and interior pipe are separated; It is characterized in that: also comprise probe and syringe needle; Said probe is provided with groove, and said groove is provided with internal thread, and an end of said syringe needle and said needle shaft is affixed; Said syringe needle and said in pipe be equipped with the external thread with said screw-internal thread fit, said probe respectively with syringe needle and interior pipe through being threaded.
2. coaxial big current probe according to claim 1 is characterized in that: the bottom of said groove is a taper shape.
3. coaxial big current probe according to claim 1, it is characterized in that: said outer tube is provided with flange, and an end of said spring props up said flange end face, and the other end props up the end that probe offers said groove.
4. coaxial big current probe according to claim 2, it is characterized in that: the end face of said probe is provided with blade tooth.
5. coaxial big current probe according to claim 4 is characterized in that: said needle shaft is the solid construction needle shaft.
6. coaxial big current probe according to claim 5 is characterized in that: an end of pipe was provided with chamfering in said needle shaft passed.
7. coaxial big current probe according to claim 6 is characterized in that: the outside surface of said spring, interior pipe, outer tube, needle shaft, probe and syringe needle is equipped with Gold plated Layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203251465U CN202196093U (en) | 2011-09-01 | 2011-09-01 | Coaxial large current probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203251465U CN202196093U (en) | 2011-09-01 | 2011-09-01 | Coaxial large current probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202196093U true CN202196093U (en) | 2012-04-18 |
Family
ID=45950996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203251465U Expired - Fee Related CN202196093U (en) | 2011-09-01 | 2011-09-01 | Coaxial large current probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202196093U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044406A (en) * | 2015-08-28 | 2015-11-11 | 东莞市天元通金属科技有限公司 | Current probe |
| CN105067849A (en) * | 2015-09-02 | 2015-11-18 | 昆山周晋电子科技有限公司 | Coaxial probe |
-
2011
- 2011-09-01 CN CN2011203251465U patent/CN202196093U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105044406A (en) * | 2015-08-28 | 2015-11-11 | 东莞市天元通金属科技有限公司 | Current probe |
| CN105067849A (en) * | 2015-09-02 | 2015-11-18 | 昆山周晋电子科技有限公司 | Coaxial probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20190901 |