CN209513911U - Sheet resistance test fixture - Google Patents
Sheet resistance test fixture Download PDFInfo
- Publication number
- CN209513911U CN209513911U CN201822049169.2U CN201822049169U CN209513911U CN 209513911 U CN209513911 U CN 209513911U CN 201822049169 U CN201822049169 U CN 201822049169U CN 209513911 U CN209513911 U CN 209513911U
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- Prior art keywords
- test
- sheet resistance
- position seat
- insulation
- electrode
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Abstract
The utility model discloses a kind of sheet resistance test fixtures, including insulation position seat, separately be fixed on the insulation locating piece and for contact with conductive gasket two test electrodes, be arranged on the insulation position seat and stressed pressing piece and two applied to insulation position seat and test electrode and grafting or be wrapped on the test electrode and pass through the contact connectio part of the external low resistance tester of connecting line respectively；Two test electrodes mutually insulated on the insulation locating piece；The contact connectio part contacts electrical connection with the test electrode.The sheet resistance test fixture of the utility model, setting connect part and contact electrical connection by way of plug or winding with test electrode, and the contact area of the two is big, improves the accuracy of test data, guarantees the accuracy of test result.The test fixture of the utility model is suitable for carrying out sheet resistance test to conductive gasket under varying environment.
Description
Technical field
The utility model relates to sheet resistance the field of test technology more particularly to a kind of sheet resistance test fixtures.
Background technique
Conductive rubber liner with its good electric conductivity, ductility, elasticity, environmental sealing and medium corrosion resistance,
The field EMI is widely applied.Conductive rubber liner is that conductive particle is distributed in rubber matrix, makes conduction by pressure
Particle contact, reaches good electric conductivity.
Surface resistivity is an important parameter of conductive gasket, is the important indicator for measuring conductive gasket shielding properties.
The sheet resistance test mode of conductive gasket is connected in the form of its test clamp with electrode generally by LCR tester at present
It connects, but test clamp and electrode contact surface product are small, will lead to test result inaccuracy, and the plastics heatproof of test clamp outer layer
Property it is poor, be not suitable under other environment in addition to room temperature sheet resistance test.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of accuracy for improving test data, guarantee test
As a result the sheet resistance test fixture of accuracy.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of sheet resistance test fixture is provided,
Including insulation position seat, separately it is fixed on the two tests electricity on the insulation locating piece and being used to contact with conductive gasket
Pole is arranged on the insulation position seat and applies stressed pressing piece and two points to insulation position seat and test electrode
Other grafting or the contact connectio part for being wrapped on the test electrode and passing through the external low resistance tester of connecting line；
Two test electrodes mutually insulated on the insulation locating piece；The contact connectio part and test electricity
Pole contact electrical connection.
Preferably, the contact connectio part is gold-plated banana plug.
Preferably, the test electrode is equipped with the jack for the gold-plated banana plug grafting.
Preferably, the contact connectio part is copper wire or gold-plated copper wires, is wrapped on the test electrode.
Preferably, the test electrode is equipped with through-hole, and the copper wire or gold-plated copper wires pass through the through-hole and are wrapped in institute
It states on test electrode.
Preferably, the pressing piece is metal block.
Preferably, two test electrodes are separately fixed on the same surface of the insulation position seat.
Preferably, the opposite sides face of the insulation position seat is respectively equipped with locating slot；The one of two test electrodes
The same surface of the insulation position seat is protruded at end, and the other end of two test electrodes is each extended over and is embedded described exhausted
In the locating slot in edge positioning seat opposite sides face.
It is contacted by way of plug or winding the utility model has the beneficial effects that setting connects part with test electrode
Electrical connection, the contact area of the two is big, improves the accuracy of test data, guarantees the accuracy of test result.The utility model
Test fixture be suitable for varying environment (high temperature, low temperature, high humidity, high/low temperature are followed) under to conductive gasket carry out sheet resistance survey
Examination.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the positive structure schematic of the sheet resistance test fixture of an embodiment of the present invention；
Fig. 2 is the side structure schematic diagram of the sheet resistance test fixture of an embodiment of the present invention；
Fig. 3 is the structural representation of gold-plated banana plug in the sheet resistance test fixture of an embodiment of the present invention；
Fig. 4 is connection signal of the sheet resistance test fixture of an embodiment of the present invention in test surfaces resistance
Figure.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now control attached drawing is detailed
Illustrate specific embodiment of the present utility model.
As shown in Figure 1, 2, the sheet resistance test fixture 100 of an embodiment of the present invention, including two test electrodes
10, insulation position seat 20, pressing piece 30 and two contact connectio parts 40.
Two test electrodes 10 are separately fixed on insulation locating piece 20, for contacting with conductive gasket 1.Pressing piece 30
It is arranged on insulation position seat 20, for applying pressure to insulation position seat 20 and test electrode 10, so that test electrode 10
It is come into full contact with the conductive particle in conductive gasket 1, guarantees electrical connection.Two contact connectio parts 40 grafting or are wrapped in two respectively
On a test electrode 10, electrical connection is contacted with test electrode 10, and can also pass through the external low resistance tester of connecting line.
Wherein, two test electrodes 10 mutually insulated on insulation locating piece 20.Two test electrodes 10 can be separately
It is fixed on the same surface of insulation position seat 20, one end is fixedly connected with the surface of insulation position seat 20, and the other end is to far from absolutely
The direction of edge positioning seat 20 extends for contacting conductive gasket 1.
Alternatively, in the present embodiment, as shown in Fig. 2, the opposite sides face of insulation position seat 20 is respectively equipped with locating slot
(not shown).The same surface of insulation position seat 20 is protruded in one end 11 of two test electrodes 10, and two are tested the another of electrode 10
One end 12 each extends over and is embedded in the locating slot in 20 opposite sides face of insulation position seat, is fastened on absolutely to test electrode 10
On edge positioning seat 20.
Test electrode 10 is gold-plated copper billet.
Further, it as shown in Figure 1-3, in the present embodiment, contact connectio part 40 is gold-plated banana plug, can be used existing
Some banana plugs are made using gold-plated.It tests electrode 10 and is equipped with the jack (not shown) for supplying gold-plated banana plug grafting.
Gold-plated banana plug is plugged in jack, and the realization that is in contact of the periphery of plug division and the inner circumferential of jack comes into contact in a large area and is electrically connected.
In other embodiments, connecting part 40 can be copper wire or gold-plated copper wires, be wrapped on test electrode 10.Copper
Line or gold-plated copper wires form multi-coil around the periphery for overlaying on test electrode 10 with canoe, increase connecing for itself and test electrode 10
Contacting surface product.Through-hole can be also equipped with by testing on electrode 10, copper wire or gold-plated copper wires pass through through-hole and are wrapped on test electrode 10, increase
The winding tightness of copper wire or gold-plated copper wires on test electrode 10.
Connecting part 40 can also be contact connectio part made of good conductivity and deformable temperature-resistant material.
Insulation position seat 20 can be the insulating materials resistant to high temperature such as polytetrafluoroethylene (PTFE) and be made, and it is various to can be gengon etc.
Shape.
Pressing piece 30 is arranged on insulation position seat 20 for applying pressure, has certain volume and weight, can be
Metal block made of the metals such as stainless steel.Pressing piece 30 can be fixed together with insulation position seat 20, and being also possible to can
Disassembly mode links together.
In conjunction with Fig. 1,2,4, the sheet resistance test fixture 100 of the utility model carries out sheet resistance survey to conductive gasket
Examination, it may include following steps:
S1, in environmental test chamber 2, two test electrodes 10 are placed on conductive gasket 1 and are contacted with conductive gasket 1,
Pressing piece 30 applies pressure and test electrode 10 is come into full contact with the conductive particle in conductive gasket 1.
Environmental test chamber 2 includes baking oven, insulating box, the chamber that can set rate temperature change.
S2, grafting or the contact connectio part 40 being wrapped on test electrode 10 are passed through into 3 JA(junction ambient) chamber 2 of connecting line
Outer low resistance tester 4.
S3, so that the environmental parameter in environmental test chamber 2 is reached setting value, read the reading of low resistance tester 4, calculating obtains
Obtain the sheet resistance value of conductive gasket 1.
Environmental parameter in environmental test chamber 2 includes temperature and/or humidity etc..
With specific embodiment, the utility model is described in further detail below.
One, conductive rubber is padded and carries out high temperature resistance test.
Testing conductive rubber packing is stablizing the resistivity in 120 DEG C of high temperature.
Test method: putting conductive rubber gasket sample into an oven, contacts conductive rubber with sheet resistance test fixture
Gasket sample is connect with external low resistance tester.Baking oven heating, stablizes after being kept for 120 DEG C, reads low resistance tester and reads
Number is R.Area S, the thickness L of known conductive rubber packing sample, are ρ=R*S/L according to electricalresistivityρ's calculation formula, and calculating obtains
Obtain the resistivity of conductive rubber liner.
Two, progress high-low temperature resistant is padded to conductive rubber and follows performance test.
Testing conductive rubber packing at -40 DEG C, 2H ← → 100 DEG C, the sheet resistance variation in 2H temperature cycles.
Test method: putting conductive rubber gasket sample into high-low temperature test chamber, is contacted with sheet resistance test fixture
Conductive rubber gasket sample is connect with external low resistance tester.Temperature change program is set, is reached respectively in chamber
Sheet resistance value shown by low resistance tester is read to -40 DEG C and 100 DEG C.
Three, conductive rubber is padded and carries out high temperature and humidity resistance test.
The Homothermal Proof Box of use puts conductive rubber gasket sample into Homothermal Proof Box, is controlled with sheet resistance test
Tool contact conductive rubber gasket sample, connect with external low resistance tester.Temperature and humidity needed for sets requirement carries out
Test.
Four, the situation of change of conductive rubber liner resistance monitors in temperature change.
Using programmable chamber, conductive rubber gasket sample is put into chamber, with sheet resistance test fixture
Conductive rubber gasket sample is contacted, is connect with external low resistance tester.Rate temperature change needed for sets requirement, and
Required temperature spot is read.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (8)
1. a kind of sheet resistance test fixture, which is characterized in that including insulation position seat, be separately fixed on the insulation positioning
Two test electrodes, setting on part and for contact with conductive gasket on the insulation position seat and to insulation position seat and
Test electrode applies stressed pressing piece and two and grafting or is wrapped on the test electrode and passes through outside connecting line respectively
Connect the contact connectio part of low resistance tester；
Two test electrodes mutually insulated on the insulation locating piece；The contact connectio part connects with the test electrode
Electric shock connection.
2. sheet resistance test fixture according to claim 1, which is characterized in that the contact connectio part is gold-plated banana
Plug.
3. sheet resistance test fixture according to claim 2, which is characterized in that the test electrode is equipped with described in confession
The jack of gold-plated banana plug grafting.
4. sheet resistance test fixture according to claim 1, which is characterized in that the contact connectio part is copper wire or plating
Golden copper wire is wrapped on the test electrode.
5. sheet resistance test fixture according to claim 4, which is characterized in that the test electrode is equipped with through-hole,
The copper wire or gold-plated copper wires pass through the through-hole and are wrapped on the test electrode.
6. sheet resistance test fixture according to claim 1, which is characterized in that the pressing piece is metal block.
7. sheet resistance test fixture according to claim 1-6, which is characterized in that two test electrodes
Separately it is fixed on the same surface of the insulation position seat.
8. sheet resistance test fixture according to claim 1-6, which is characterized in that the insulation position seat
Opposite sides face is respectively equipped with locating slot；The same surface of the insulation position seat is protruded in one end of two test electrodes,
The other end of two test electrodes is each extended over and is embedded in the locating slot in insulation position seat opposite sides face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822049169.2U CN209513911U (en) | 2018-12-05 | 2018-12-05 | Sheet resistance test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822049169.2U CN209513911U (en) | 2018-12-05 | 2018-12-05 | Sheet resistance test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209513911U true CN209513911U (en) | 2019-10-18 |
Family
ID=68194708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822049169.2U Active CN209513911U (en) | 2018-12-05 | 2018-12-05 | Sheet resistance test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209513911U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655666A (en) * | 2018-12-05 | 2019-04-19 | 深圳市飞荣达科技股份有限公司 | Sheet resistance test fixture and test method |
-
2018
- 2018-12-05 CN CN201822049169.2U patent/CN209513911U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655666A (en) * | 2018-12-05 | 2019-04-19 | 深圳市飞荣达科技股份有限公司 | Sheet resistance test fixture and test method |
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