CN109883672A - A kind of experimental rig and method of the interior contact parts depreciation degeneration of test electric connector - Google Patents
A kind of experimental rig and method of the interior contact parts depreciation degeneration of test electric connector Download PDFInfo
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- CN109883672A CN109883672A CN201910167928.1A CN201910167928A CN109883672A CN 109883672 A CN109883672 A CN 109883672A CN 201910167928 A CN201910167928 A CN 201910167928A CN 109883672 A CN109883672 A CN 109883672A
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Abstract
The invention discloses the experimental rigs that contact parts depreciation in a kind of test electric connector is degenerated, belong to electric connector field, the experimental rig includes three-dimensional-R axis slide unit, contact force sensor, coil spring silk fixture, pin clamp, force snesor group, electromagnetic vibration platform and pedestal, three-dimensional-R axis slide unit and electromagnetic vibration platform are each attached on pedestal, contact force sensor is fixed on three-dimensional-R axis slide unit, coil spring silk fixture is fixed on the contact force sensor, coil spring silk is fixed on coil spring silk fixture, force snesor group is fixed on electromagnetic vibration platform, pin clamp is fixed in the force snesor group, contact pin is fixed on pin clamp, contact pin is placed in above coil spring silk and the axial direction with electromagnetic vibration platform along contact pin moves reciprocatingly, the present invention drives contact pin to carry out certain amplitude and frequency by electromagnetic vibration platform Movement, obtains the mechanical environment in use close to Wire spring type electric coupling device, closer to the real working condition of part.
Description
Technical field
The invention belongs to electric connector fields, and in particular to a kind of examination that the interior contact parts depreciation of test electric connector is degenerated
Experiment device and method.
Background technique
Each type electric connector is widely used in all kinds of electric wirings, and the usage amount of electric connector is reachable on an airplane
Hundreds of to thousands of, involve ten of thousands route.Electric connector, should also be severe other than electromagnetic performance requirement to be met
Guarantee to reach under environment to contact requirement reliable, easy to maintain.The reliability of single electric connector directly influences circuit system
Normal work, be related to the safety of entire host.Currently, wire spring type jack is because of its high stable, Gao Ke in electric connector product
It leans on and is widely used, the principal element for influencing electric connector service life is fretting wear.Existing fretting wear test dress
The test object set is mostly the switch contact in electric elements, and such experimental rig has the disadvantages that (1) volume is larger, examination
Testing object is switch contact；(2) accuracy compensation problem is not considered；It is therefore desirable to design a set of suitable for contact pin in electric connector
With the experimental rig of coil spring silk fretting wear, convenient for study electric connector degenerate case.
Summary of the invention
An object of the present invention tests the experimental rig that contact parts depreciation is degenerated in electric connector there is provided a kind of,
The device can carry out fretting wear life test with coil spring silk to the contact pin in connector, can be in some cycles to target
Part provides oscillating load constant, close to real working condition；
The second object of the present invention is to provide a kind of utilize to test the experimental rig of contact parts depreciation degeneration in electric connector
Method, compared in the test method of fretting wear research field, the present invention can reduce experimentation cost and test period at present,
It evaluates the superiority and inferiority of relevant design scheme in time convenient for electrical connector design personnel, and then improves efficiency of research and development.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of experimental rig that the interior contact parts depreciation of test electric connector is degenerated, the interior contact part of the electric connector includes line
Spring silk and contact pin, the experimental rig include three-dimensional-R axis slide unit, contact force sensor, coil spring silk fixture, pin clamp, power biography
Sensor group, electromagnetic vibration platform and pedestal, the three-dimensional-R axis slide unit and electromagnetic vibration platform are each attached on pedestal, described to connect
Touch force sensor is fixed on three-dimensional-R axis slide unit, and the coil spring silk fixture is fixed on the contact force sensor, the line
Spring silk is fixed on coil spring silk fixture, and the force snesor group is fixed on the electromagnetic vibration platform, and the pin clamp is solid
It is scheduled in the force snesor group, the contact pin is fixed on pin clamp, and the contact pin is placed in above coil spring silk and with electromagnetism
Formula shake table moves reciprocatingly along the axial direction of contact pin.
Further, the axis of the contact pin, the horizontal center line of force snesor group and electromagnetic vibration platform axle center are located at
In same level.
Further, coil spring silk fixture includes seat under coil spring silk upper cover and coil spring silk, and the coil spring silk is fixed on coil spring silk
Under upper cover and coil spring silk between seat, seat is fixed on contact force sensor under the coil spring silk.
Further, the pin clamp includes seat under contact pin upper cover and contact pin, the contact pin be fixed on contact pin upper cover and
Under contact pin between seat, seat is fixed in the force snesor group under the contact pin.
Further, the force snesor group includes two force snesors, and described two force snesors hang down along gravity direction
Straight arrangement.
Further, the coil spring silk fixture and pin clamp are isolation material.
A kind of test method using the experimental rig, includes the following steps,
Step 1: contact pin is fixed in pin clamp, and coil spring silk is fixed in coil spring silk fixture, and contact pin is placed in coil spring silk
Top；
Step 2: according to the design parameter of electric connector, the axle center angle of contact pin and coil spring silk is adjusted by three-dimensional-R axis slide unit
With the size of contact force；
Step 3: contact pin and coil spring silk is made to be passed through the required electric current of test；
Step 4: electromagnetic vibration platform is opened, is done back and forth according to contact pin described in the frequency of setting, amplitude driving along the axial direction of contact pin
Movement；
Step 5: using the contact resistance data during data collecting plate card acquisition test between contact pin and coil spring silk, pass through power
Sensor group tests the real-time amplitude and frequency of contact pin, and the change of contact pin and coil spring silk contact forces is tested by contact force sensor
Change data, after the wear degradation between contact pin and coil spring silk occurs, because electrical contact happens change, so that contact pin and coil spring silk
Between contact resistance constantly increase, the variation by analyzing contact resistance can obtain the wear degradation feelings of contact pin and coil spring silk
Condition.
Compared with the prior art, the present invention has the advantage that
1, the present invention carries out the research of fretting wear using contact pin and coil spring silk as research object, is driven and is inserted by electromagnetic vibration platform
Needle carries out the movement of certain amplitude and frequency, the available mechanical environment in use close to Wire spring type electric coupling device, more
Close to the real working condition of part.
2, the present invention adopts the overall process of test using contact force sensor, force snesor group, data collecting plate card
Sample can greatly improve test accuracy and test meaning.
3, the present invention can be electrically connected by replacement pin clamp, coil spring silk fixture, electromagnetic vibration platform to other kinds of
It connects device and carries out this class testing.
4, the present invention selects the driving contact pin movement of electromagnetic vibration platform, and contact pin can be accurately given in its performance range
Locating mechanical environment parameter.
5, the axle center angle between the adjustable contact pin of the present invention and coil spring silk and the contact force between the two, what is be able to verify that sets
Meter scheme is wider.
Detailed description of the invention
Fig. 1 is total arrangement main view of the invention；
Fig. 2 is the structure left view for testing structural body；
Fig. 3 is the structure top view for testing structural body；
Fig. 4 is pin clamp main view；
Fig. 5 is pin clamp left view；
Fig. 6 is coil spring silk fixture main view；
Fig. 7 is coil spring silk fixture left view；
Fig. 8 is the enlarged drawing of A in Fig. 7；
The horizontal layout figure of contact pin and tested coil spring silk, ω in figure are tested when Fig. 9 is test1For the direction of vibration for being tested contact pin；
The vertical arrangement figure of contact pin and tested coil spring silk, ω in figure are tested when Figure 10 is test1For be tested contact pin direction of vibration,
F1For the contact force direction being tested between contact pin and tested coil spring silk；
Figure 11 is tested the contact resistance between contact pin and tested coil spring silk with the variation diagram of test period under the conditions of being 140um 50Hz；
Figure 12 is tested the contact resistance between contact pin and tested coil spring silk with the variation diagram of test period under the conditions of being 100um 50Hz.
In figure: 1, three-dimensional-R axis slide unit, 2, contact force sensor, 3, coil spring silk fixture, 4, pin clamp, 5, force snesor
Group, 6, electromagnetic vibration platform, 7, pedestal, 8, seat under contact pin, 9, contact pin upper cover, 10, contact pin, 11, seat under coil spring silk, 12, coil spring
Silk, 13, coil spring silk upper cover.
Specific embodiment
Further description of the technical solution of the present invention by 1-12 with reference to the accompanying drawing, and however, it is not limited to this, all
Modifying or equivalently replacing the technical solution of the present invention, without departing from the range of technical solution of the present invention, should all cover
In protection scope of the present invention.
Specific embodiment one
A kind of experimental rig that the interior contact parts depreciation of test electric connector is degenerated, the interior contact part of the electric connector includes line
Spring silk 12 and contact pin 10, the experimental rig include three-dimensional-R axis slide unit 1, contact force sensor 2, coil spring silk fixture 3, contact pin folder
Tool 4, force snesor group 5, electromagnetic vibration platform 6 and pedestal 7, the three-dimensional-R axis slide unit 1 and electromagnetic vibration platform 6 are each attached to
On pedestal 7, the contact force sensor 2 is fixed on three-dimensional-R axis slide unit 1, and the coil spring silk fixture 3 is fixed on the contact
On force snesor 2, the coil spring silk 12 is fixed on coil spring silk fixture 3, and the force snesor group 5 is fixed on the electromagnetic type vibration
On dynamic platform 6, the pin clamp 4 is fixed in the force snesor group 5, and the contact pin 10 is fixed on pin clamp 4, described
Contact pin 10 is placed in 12 top of coil spring silk and the axial direction with electromagnetic vibration platform 6 along contact pin 10 moves reciprocatingly.
Further, 6 axle center of the axis of the contact pin 10, the horizontal center line of force snesor group 5 and electromagnetic vibration platform
In same level.
Further, coil spring silk fixture 3 includes seat 11 under coil spring silk upper cover 13 and coil spring silk, and the coil spring silk 12 is fixed on
Under coil spring silk upper cover 13 and coil spring silk between seat 11, seat 11 is fixed on contact force sensor 2 under the coil spring silk.
Further, the pin clamp 4 includes seat 8 under contact pin upper cover 9 and contact pin, and the contact pin 10 is fixed on contact pin
Under lid 9 and contact pin between seat 8, seat 8 is fixed in the force snesor group 5 under the contact pin.
Further, the force snesor group 5 includes two force snesors, and described two force snesors hang down along gravity direction
Straight arrangement；
Further, the coil spring silk fixture 3 and pin clamp 4 are isolation material.
Wherein, the three-dimensional-R axis slide unit 1 be used for adjust contact pin 10 and coil spring silk 12 contact position and contact force it is big
It is small；The contact force sensor 2 is used to detect the contact force between contact pin 10 and coil spring silk 12；The force snesor group 5 is for examining
The practical mechanical state of middle contact pin 10 is tested in test, since experimental provision itself is there are certain quality, and measured vibration, vibration
There are high-frequency noises in amplitude wave shape, and in view of additivity white Gaussian noise is the most common noise model, the power of ideal stability
Sensor voltage waveform should be stable signal, and harmonic noise signals then show as high-frequency signal, therefore pass first to two power
The signals and associated noises of sensor carry out multilevel wavelet decomposition form, are then averaged, can be accurately obtained locating for contact pin to it
Mechanical environment state.
Specific embodiment two
A kind of test method using experimental rig described in specific embodiment one, includes the following steps,
Step 1: contact pin 10 is fixed in pin clamp 4, and coil spring silk 12 is fixed in coil spring silk fixture 3, contact pin 10 is set
In the top of coil spring silk 12；
Step 2: according to the design parameter of electric connector, the axle center of contact pin 10 and coil spring silk 12 is adjusted by three-dimensional-R axis slide unit 1
The size of angle and contact force；
Step 3: contact pin 10 and coil spring silk 12 is made to be passed through the required electric current of test；
Step 4: electromagnetic vibration platform 6 is opened, according to contact pin 10 described in the frequency of setting, amplitude driving along the axial direction of contact pin 10
It moves reciprocatingly；
Step 5: using the contact resistance data during data collecting plate card acquisition test between contact pin 10 and coil spring silk 12, lead to
Real-time amplitude and frequency that force snesor group 5 tests contact pin 10 are crossed, contact pin 10 and coil spring silk 12 are tested by contact force sensor 2
The delta data of contact forces, after the wear degradation between contact pin 10 and coil spring silk 12 occurs, because electrical contact happens change,
So that the contact resistance between contact pin 10 and coil spring silk 12 constantly increases, the variation by analyzing contact resistance can obtain contact pin 10
With the wear degradation situation of coil spring silk 12.
When specific works, the tested contact pin 10 is in contact during the test with tested coil spring silk 12, is tested contact pin 10
On tested coil spring silk 12, the axle center angle of tested contact pin 10 and tested coil spring silk 12 is adjusted by three-dimensional-R axis slide unit 1,
The change of board design parameter can also adjust its contact between tested contact pin 10 by changing the height of tested coil spring silk 12
Power；In test, it is tested contact pin 10 and, by the electric current that test is required, is driven by electromagnetic vibration platform 6 on tested coil spring silk 12
Dynamic tested contact pin 10 carries out the movement of certain amplitude, frequency, so that generating fine motion mill between tested contact pin 10 and tested coil spring silk 12
Damage, in test, is acquired the contact resistance between tested contact pin 10 and tested coil spring silk 12 by data collecting plate card, and
The real-time amplitude and frequency of tested contact pin 10 are obtained using force snesor group 5, to obtain the two moving back in fretting wear
Change situation.
Figure 11 and Figure 12 gives when fine motion amplitude is respectively 140 μm and 100 μm, and contact resistance average value is with fine motion week
The typical degenerative process of phase.As seen from Figure 11, when fine motion amplitude is 140 μm, the contact performance of electric connector is moved back
Change process can be divided into three phases: in the first stage, the fine motion period, contact resistance average value was always respectively before 3820
It is maintained at 10m Ω or less；In second stage, contact resistance began to ramp up from 10m Ω and was more than from 3820 to 4200 the fine motion period
Failure threshold 100m Ω；In the phase III, after the fine motion period respectively reaches 4200, contact resistance average value is with failure threshold
Several times big ups and downs.As seen from Figure 12, when fine motion amplitude is 100 μm, contact resistance degenerative process having the same,
Equally it is divided into three phases.This is mainly due to surface gold-plating layers when initial fine motion to be capable of providing protective effect well, connects
The clast that the existing abrasion in touching interface generates gold can not also be oxidized corrosion.After Gold plated Layer is worn, base metal is exposed to sky
In gas, since copper is oxidized easily and then generates oxidation film layer, the oxidation film layer on surface can make conductive contact area reduce, and
And clast is quickly oxidized under high temperature action caused by frictional heat, so that contact resistance is begun to ramp up.Later, due to abrasion and
The effect of corrosion, so that contact resistance starts big ups and downs.Thus conclusion it was determined that this set experimental rig precision and work
Ability meets test request.
Claims (7)
1. the experimental rig that contact parts depreciation is degenerated in a kind of test electric connector, the interior contact part of the electric connector include
Coil spring silk (12) and contact pin (10), it is characterised in that: the experimental rig includes three-dimensional-R axis slide unit (1), contact force sensor
(2), coil spring silk fixture (3), pin clamp (4), force snesor group (5), electromagnetic vibration platform (6) and pedestal (7), described three
Dimension-R axis slide unit (1) and electromagnetic vibration platform (6) are each attached on pedestal (7), and the contact force sensor (2) is fixed on three
On dimension-R axis slide unit (1), the coil spring silk fixture (3) is fixed on the contact force sensor (2), and the coil spring silk (12) is solid
It is scheduled on coil spring silk fixture (3), the force snesor group (5) is fixed on the electromagnetic vibration platform (6), the pin clamp
(4) it is fixed on the force snesor group (5), the contact pin (10) is fixed on pin clamp (4), and the contact pin (10) is placed in
Above coil spring silk (12) and the axial direction with electromagnetic vibration platform (6) along contact pin (10) moves reciprocatingly.
2. the experimental rig that contact parts depreciation is degenerated in a kind of test electric connector according to claim 1, feature
Be: the axis of the contact pin (10), the horizontal center line of force snesor group (5) and electromagnetic vibration platform (6) axle center are located at same
On one horizontal plane.
3. the experimental rig that contact parts depreciation is degenerated in a kind of test electric connector according to claim 1, feature
Be: coil spring silk fixture (3) includes seat (11) under coil spring silk upper cover (13) and coil spring silk, and the coil spring silk (12) is fixed on coil spring
Under silk upper cover (13) and coil spring silk between seat (11), seat (11) is fixed on contact force sensor (2) under the coil spring silk.
4. the experimental rig that contact parts depreciation is degenerated in a kind of test electric connector according to claim 1, feature
Be: the pin clamp (4) includes seat (8) under contact pin upper cover (9) and contact pin, and the contact pin (10) is fixed on contact pin upper cover
(9) and under contact pin between seat (8), seat (8) is fixed on the force snesor group (5) under the contact pin.
5. the experimental rig that contact parts depreciation is degenerated in a kind of test electric connector according to claim 1, feature
Be: the force snesor group (5) includes two force snesors, and described two force snesors are arranged vertically along gravity direction.
6. the experimental rig that contact parts depreciation is degenerated in a kind of test electric connector according to claim 1, feature
Be: the coil spring silk fixture (3) and pin clamp (4) are isolation material.
7. a kind of test method using experimental rig described in claim 1-6 any claim, which is characterized in that including
Following steps,
Step 1: contact pin (10) is fixed in pin clamp (4), and coil spring silk (12) is fixed in coil spring silk fixture (3), will
Contact pin (10) is placed in the top of coil spring silk (12)；
Step 2: according to the design parameter of electric connector, pass through three-dimensional-R axis slide unit (1) adjustment contact pin (10) and coil spring silk (12)
Axle center angle and contact force size；
Step 3: contact pin (10) and coil spring silk (12) is made to be passed through the required electric current of test；
Step 4: it opens electromagnetic vibration platform (6), according to contact pin described in the frequency of setting, amplitude driving (10) along contact pin (10)
Axial direction move reciprocatingly；
Step 5: the contact resistance number during data collecting plate card acquisition test between contact pin (10) and coil spring silk (12) is utilized
According to, by force snesor group (5) test contact pin (10) real-time amplitude and frequency, pass through contact force sensor (2) test contact pin
(10) with the delta data of coil spring silk (12) contact forces, when between contact pin (10) and coil spring silk (12) wear degradation generation after,
Because electrical contact happens change, so that the contact resistance between contact pin (10) and coil spring silk (12) constantly increases, connect by analysis
The variation of electric shock resistance can obtain the wear degradation situation of contact pin (10) and coil spring silk (12).
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| CN201910167928.1A CN109883672B (en) | 2019-03-06 | 2019-03-06 | Test device and method for testing wear degradation of contact parts in electric connector |
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| CN201910167928.1A CN109883672B (en) | 2019-03-06 | 2019-03-06 | Test device and method for testing wear degradation of contact parts in electric connector |
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| CN109883672B CN109883672B (en) | 2021-09-07 |
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Cited By (5)
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| CN110501152A (en) * | 2019-08-27 | 2019-11-26 | 中国航空综合技术研究所 | A kind of test method and test fixture of the reproduction of connecting-type construction package intermittent defect |
| CN111337368A (en) * | 2020-02-11 | 2020-06-26 | 杭州电子科技大学 | Method and device for testing abrasion derivative condition of single pin of robot electric connector |
| CN111504629A (en) * | 2020-05-09 | 2020-08-07 | 上海华碧检测技术有限公司 | Alternative test method for traditional type test of electronic connector |
| CN112540323A (en) * | 2020-12-17 | 2021-03-23 | 中国航空综合技术研究所 | In-situ simulation and online diagnosis method for contact failure of electric connector |
| CN117761443B (en) * | 2024-02-20 | 2024-05-03 | 青岛铭青机电有限公司 | Test device and method for testing wear degradation of contact parts in electric connector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111504629A (en) * | 2020-05-09 | 2020-08-07 | 上海华碧检测技术有限公司 | Alternative test method for traditional type test of electronic connector |
| CN112540323A (en) * | 2020-12-17 | 2021-03-23 | 中国航空综合技术研究所 | In-situ simulation and online diagnosis method for contact failure of electric connector |
| CN112540323B (en) * | 2020-12-17 | 2023-08-08 | 中国航空综合技术研究所 | In-situ simulation and online diagnosis method for contact failure of electric connector |
| CN117761443B (en) * | 2024-02-20 | 2024-05-03 | 青岛铭青机电有限公司 | Test device and method for testing wear degradation of contact parts in electric connector |
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