CN103872549A - Process for stabilizing insertion and extraction force of contact of 22D slot and process for stabilizing insertion and extraction force of contact of phi 1.5 leaf spring - Google Patents
Process for stabilizing insertion and extraction force of contact of 22D slot and process for stabilizing insertion and extraction force of contact of phi 1.5 leaf spring Download PDFInfo
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- CN103872549A CN103872549A CN201310738432.8A CN201310738432A CN103872549A CN 103872549 A CN103872549 A CN 103872549A CN 201310738432 A CN201310738432 A CN 201310738432A CN 103872549 A CN103872549 A CN 103872549A
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Abstract
The invention provides a process for stabilizing insertion and extraction force of a contact of a 22D slot and a process for stabilizing insertion and extraction force of a contact of a phi 1.5 leaf spring. The process for stabilizing the insertion and extraction force of the contact of the 22D slot comprises the following steps of 1, analyzing instability of the insertion and extraction force of the contact; 2, determining the insertion and extraction force of a closed port of the contact of the slot; 3, relieving internal stress by adopting a thermal processing method for stabilizing the insertion and extraction force; 4, performing mechanical life testing, vibration testing and impact testing on the contact of the slot. The process for stabilizing the insertion and extraction force of the contact of the phi 1.5 leaf spring comprises the following steps of 1, analyzing instability of the insertion and extraction force of the contact; 2, determining the insertion and extraction force of a closed port of the contact of the leaf spring; 3, relieving internal stress by adopting a thermal processing method for stabilizing the insertion and extraction force; 4, performing mechanical life testing, vibration testing, impact testing and acceleration testing on the contact of the leaf spring. The process level is promoted, the contacts are flexibly inserted from the original failure, and are stably and reliably converted, and larger economic and social benefits are obtained.
Description
Technical field
The present invention relates to stablize contact contact engaging and separating force technology field, provide especially a kind of stable grooved bore contact and φ 1.5 to wrap spring film perforation contact contact engaging and separating force technique.
Background technology
At present, there is causing because contact engaging and separating force is defective product loose contact, circut breaking in electric connector product for a long time, and the single hole contact engaging and separating force of electric connector contact is unsuitable excessive and too small.Contact engaging and separating force is crossed the wearing and tearing of conference aggravation contact while repeatedly plugging, also the total separating force that causes electric connector is increased, and multi-core electrical connector is separated by hand very difficult; The too small meeting of contact engaging and separating force causes contact contact unstable, causes contact to hit.After hole contact closes up, contact engaging and separating force is unstable, and indivedual holes contact contact engaging and separating force there will be excessive or too small phenomenon, in use can cause contact to be lost efficacy, and takes suitable technique to ensure that hole contact contact engaging and separating force stability is very crucial for this reason.
People urgently wish to obtain the good stable grooved bore contact of a kind of technique effect and bag spring film perforation contact contact engaging and separating force technique.
Summary of the invention
Order of the present invention is to provide a kind of 22D grooved bore and φ 1.5 wraps spring film perforation contact contact engaging and separating force technique; Realizing 22D grooved bore contact, φ 1.5 wraps spring film perforation contact and becomes flexibility from inefficacy and plug together, contact stabilization, reliable.
Described 22D grooved bore contact contact engaging and separating force processing step is as follows:
1. the unsettled physical analysis of contact contact engaging and separating force
The insertion of electric connector and extract the sliding friction being actually between a kind of contact, frictional force is contact engaging and separating force.
F＝μN
F---frictional force
μ---coefficient of friction
N---normal pressure
In the situation that coefficient of friction is certain, the size of normal pressure determines the size of contact engaging and separating force, and normal pressure is elastic force contact pin being produced by jack stressed the deforming of closing in, therefore the size of contact engaging and separating force is determined by the deflection of jack, and jack closes up because external cause is stressed while distortion, in jack, between each several part, produce interactional internal force to resist the effect of this external cause and to try hard to make the position of jack from distortion to be returned to the position before distortion, internal stress discharges gradually a process, so after certain hour, along with the deflection that discharges gradually jack of internal stress is along with changing contact engaging and separating force along with change.
2. determine 22D grooved bore contact closing in contact engaging and separating force
Find out contact contact engaging and separating force and the closing in contact engaging and separating force variable quantity through Ageing Treatment by test, determine that closing in contact engaging and separating force scope should be 70～110g.Concrete test method is as follows:
1) will be greater than 100 22D jacks and close up by 40～140g contact engaging and separating force, measure every closing in contact engaging and separating force.
2) carry out Ageing Treatment, heating-up temperature: 150～160 DEG C, heating time: 1 hour～1.5 hours, place more than 12 hours under room temperature.
3) every contact engaging and separating force after measurement Ageing Treatment.
4) after statistics Ageing Treatment between contact engaging and separating force and closing in contact engaging and separating force variable quantity at-30～+ 30g.
5) according to 22D hole contact technical requirement: contact engaging and separating force should meet 40～140g, after consideration Ageing Treatment, between contact engaging and separating force and closing in contact engaging and separating force, variable quantity determines that at-30～+ 30g closing in contact engaging and separating force minimum is 40g-(-30g)=70g, closing in contact engaging and separating force maximum is 140g-30g=110g, that is: closing in contact engaging and separating force should be 70～110g.
3. adopt heat treatment method to eliminate internal stress and stablize contact engaging and separating force
1) environmental requirement:
The production site of heat treatment factory building should be clean, and the fire-fighting equipment of outfit should be complete, intact; Baking oven should be furnished with good ventilation unit; Temperature in factory building generally should be lower than 10 DEG C; Control laboratory and other indoor should be lower than 15 DEG C.
2) Technology for Heating Processing
Can adopt the firing equipments such as baking oven, contact entirety is carried out to Ageing Treatment.Determine that according to plug jack material heating-up temperature is 150～160 DEG C, be heating time: 1 hour～1.5 hours, under room temperature, place more than 12 hours.
4. 22D grooved bore contact is carried out to mechanical endurance, vibration, shock-testing, meet GJB599A-93 " resistance to environment separates high density small round electric connector generic specification fast " requirement.
1) test mechanical endurance
By the electric connector assembling, carry out with hand 500 times connection with separate, and plug together when separating at every turn, must make free-end electric connector reach completely and plug together and separate with fixing electric connector.Connect and be 300 times/h to the maximum with the speed separating.Post-test-inspection contact, single hole contact engaging and separating force meets technical requirement 40～140g, and can meet follow-up test requirement.
2) vibration-testing
The electric connector plugging together carefully connecting the wire is installed on fixture and is fastened on vibration mechine, and all contacts are even is connected into a complete circuit, and passes to the electric current of 100mA.In whole process, access break-make indicator with the even discontinuity of monitoring contact.Connector test piece is divided into equal amount, carries out following three groups of vibration tests.
A sinusoidal vibration
It is 254mm/s that connector bears frequency its speed in the time of 10Hz～50Hz; In the time of 50Hz～140Hz, double-amplitude is 1.5mm; Be 588m/s at 140Hz～2000Hz brief acceleration
2vibration test.
Need 20min from the round frequency sweep of the gamut of 2000Hz～10Hz again from 10Hz～2000Hz.
In three mutually perpendicular each directions, vibrate 12 hours, totally 36 hours.
In each direction, divide again three kinds of situations to vibrate:
(2) vibrate at ambient temperature 4h
(2) at-55 ± 5 DEG C, vibration 4h
(3) 200 ± 5 DEG C of hot conditionss, vibration 4h
B random vibration
The power spectral density that product should bear oscillating curve should be 1.0G2/Hz, and total acceleration root-mean-square value is 41.7G random vibration test.
200 ± 5 DEG C of hot conditionss, carry out vibration test.Time of vibration is longitudinal 8h, laterally 8h, altogether 16h.
C random vibration
The power spectral density that product should bear oscillating curve should be 1.0G2/Hz, and total acceleration root-mean-square value is 36.6G random vibration test.
At room temperature condition, time of vibration is longitudinal 8h, laterally 8h, altogether 16h.
After vibration test, check connector, electric discontinuity should be not more than 1 μ s.
3) shock-testing
A standard is impacted
The electric connector plugging together carefully connecting the wire is installed on fixture and is fastened on shock table.All contact should be connected into a series circuit, and the electric current of logical 100mA, by the contact situation of break-make indicator inspection electric connector.
At electric connector afterbody 203.2mm ± 2mm place, bundle conductor is clamped.
It is 300G ± 15% that electric connector bears acceleration in three mutually perpendicular directions, the shock test that the burst length is 3 ± 1ms, and each direction is each impacts 3 times, 18 times altogether.
B high-strength impact
The electric connector plugging together is installed on fixture and is together fastened on the face flat board of station with horizontal and vertical directions.
Bundle conductor is fastening with support apart from product 914.4mm ± 2mm place.
All contact should be connected into a series circuit, accesses the electric discontinuity that break-make indicator check circuit exceedes 1 μ s in circuit.
High-strength impact is carried out in the A level test specifying by MIL-S-901, and the each impact of each direction three times, the falling height of tup is respectively 304.8mm; 914.4mm and 1524mm.
After shock test, check connector, electric discontinuity should be not more than 1 μ s.
It is as follows that described stable φ 1.5 wraps spring film perforation contact contact engaging and separating force processing step:
1. the unsettled physical analysis of contact contact engaging and separating force
The insertion of electric connector and extract the sliding friction being actually between a kind of contact, frictional force is contact engaging and separating force.
F＝μN
F---frictional force
μ---coefficient of friction
N---normal pressure
In the situation that coefficient of friction is certain, the size of normal pressure determines the size of contact engaging and separating force, and normal pressure is elastic force contact pin being produced by spring leaf stressed the deforming of closing in, therefore the size of contact engaging and separating force is determined by the deflection of spring leaf, and spring leaf closes up because external cause is stressed while distortion, in spring leaf, between each several part, produce interactional internal force to resist the effect of this external cause and to try hard to make the position of spring leaf from distortion to be returned to the position before distortion, internal stress discharges gradually a process, so after certain hour, along with the deflection of the sheet of retracting spring gradually of internal stress is along with changing contact engaging and separating force along with change.
2. determine that φ 1.5 wraps spring film perforation contact closing in contact engaging and separating force
According to the operability of processing experience and consideration production, determine that by testing closing in contact engaging and separating force should be 600～700g.Concrete test method is as follows:
1) by following four groups of contact engaging and separating force scopes, φ 1.5 hole contacts are closed up, every group is greater than 100.
First group: 800～900g
Second group: 700～800g
The 3rd group: 600～700g
The 4th group: 500～600g
2) by above-mentioned contact Ageing Treatment, heating-up temperature: 150～160 DEG C, heating time: 1 hour～1.5 hours, place more than 12 hours under room temperature.
3) every contact engaging and separating force after measurement Ageing Treatment.
4) soak respectively protective agent, measure and soak every contact engaging and separating force after protective agent.
5) add up above result of the test (in table 1)
Table 1(contact engaging and separating force unit g)
Wrap spring film perforation contact technical requirement according to φ 1.5: contact engaging and separating force should meet 300～600g; draw from above result of the test; the 3rd group (600～700g) close up hole contact through Ageing Treatment, soak protective agent after contact engaging and separating force within the scope of 300～600g, meet technical requirement.Therefore the contact engaging and separating force that closes up should be 600～700g.
3. adopt heat treatment method to eliminate internal stress and stablize contact engaging and separating force
1) environmental requirement:
The production site of heat treatment factory building should be clean, and the fire-fighting equipment of outfit should be complete, intact; Baking oven should be furnished with good ventilation unit; Temperature in factory building generally should be lower than 10 DEG C; Control laboratory and other indoor should be lower than 15 DEG C.
2) Technology for Heating Processing
Can adopt the firing equipments such as baking oven, contact entirety is carried out to Ageing Treatment.According to spring leaf material decision heating-up temperature: 150～160 DEG C, heating time: 1 hour～1.5 hours, place more than 12 hours under room temperature.
4. φ 1.5 is wrapped to spring film perforation contact mechanical endurance, vibration, impact, acceleration test, meet 2PX technical conditions.
1) mechanical endurance
With hand or special equipment, electric connector is carried out to connection, the separation test of 500 times to be not more than the speed of 8 beats/min, the contact resistance of measuring connector contact after test should be not more than 2.5m Ω.
2) vibration
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on vibration mechine.
A three mutually perpendicular axially on by the regulation of table 2 carry out frequency 10HZ～5000HZ, acceleration is 490m/s
2vibration stability test.
B three mutually perpendicular axially on by the regulation of table 3 carry out frequency 10HZ～2000HZ, acceleration is 196m/s
2vibration strength test.
In vibration test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector.
In vibration test process, contact should contact reliably, should not occur being greater than the momentary power failure phenomenon of 1 μ s.
Table 2
| Test frequency | Time of vibration | Test frequency | Time of vibration | Test frequency | Time of vibration |
| 100HZ | 2min | 600HZ | 2min | 2000HZ | 1min |
| 200HZ | 2min | 700HZ | 2min | 3000HZ | 1min |
| 300HZ | 2min | 800HZ | 2min | 4000HZ | 1min |
| 400HZ | 2min | 900HZ | 2min | 5000HZ | 1min |
| 500HZ | 2min | 1000HZ | 2min | Add up to | 24min |
Table 3
| Test frequency | Time of vibration | Test frequency | Time of vibration | Test frequency | Time of vibration | Test frequency | Time of vibration |
| 10HZ | 1h | 600HZ | 20min | 1100HZ | 10min | 1600HZ | 10min |
| 20HZ | 30min | 700HZ | 10min | 1200HZ | 10min | 1700HZ | 10min |
| 50HZ | 30min | 800HZ | 10min | 1300HZ | 10min | 1800HZ | 10min |
| 80HZ | 30min | 900HZ | 10min | 1400HZ | 10min | 1900HZ | 10min |
| 200HZ | 26min | 1000HZ | 10min | 1500HZ | 10min | 2000HZ | 10min |
| ? | ? | ? | ? | ? | ? | Add up to | 336min |
3) impact
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on shock table.
At two, mutually perpendicular to carry out acceleration on be axially 4900m/s to A
2, shock duration 9 shock tests that are 2ms.
At two, mutually perpendicular to carry out acceleration on be axially 980m/s to B
2, shock duration 40 shock tests that are 3ms.
In shock test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector.
In shock test process, contact should contact reliably, should not occur being greater than the momentary power failure phenomenon of 1 μ s.
4) acceleration
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on fixed acceleration test platform.
At two, mutually perpendicular to carry out acceleration on be axially 1960m/s
23min fixed acceleration test.
In acceleration test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector.
Should contact reliably standing contact in fixed acceleration test process, should not occur being greater than the momentary power failure phenomenon of 1 μ s.
Adopting traditional handicraft φ 1.5 to wrap spring film perforation contact disqualification rate is probably that 30%, 22D grooved bore contact closing in disqualification rate is 10%; Adopt stable 22D grooved bore contact of the present invention and φ 1.5 to wrap spring film perforation contact contact engaging and separating force technique, φ 1.5 wraps spring film perforation contact disqualification rate and is less than 0.01%, 22D grooved bore contact closing in disqualification rate and is less than 0.001%; Electric connector product is because of contact contact engaging and separating force instability problem, and every product is reprocessed approximately 0.2 yuan of left and right, like this, can save and much reprocess expense, and economic benefit is considerable.
Stable 22D grooved bore contact of the present invention and φ 1.5 wrap the electric connector products such as spring film perforation contact contact engaging and separating force technique can thoroughly solve 38999,2PX and occur causing because contact engaging and separating force is defective for a long time product loose contact, circut breaking.By on the in-depth analysis that affects contact engaging and separating force stability, to take corresponding feasible technique and obtain best contact engaging and separating force scope by correct test method, lifting process level, realizes contact and becomes flexibility from inefficacy and plug together, and contact stabilization, transforms reliably.For the development of follow-up this type of new product and the improvement of existing structure product provide sufficient theory and practical experience; Ensure product quality, there is larger economy and social value.
Brief description of the drawings
Fig. 1 is 22D hole contact structural representation;
Fig. 2 is that φ 1.5 wraps spring film perforation contact structural representation;
Fig. 3 is A-A place cutaway view in Fig. 2.
Embodiment
Embodiment 1
Described 22D grooved bore contact contact engaging and separating force processing step is as follows:
1. determine 22D grooved bore contact closing in contact engaging and separating force
Find out contact contact engaging and separating force and the closing in contact engaging and separating force variable quantity through Ageing Treatment by test, determine that closing in contact engaging and separating force scope should be 70～110g.Concrete test method is as follows:
1) 100 22D jacks are closed up by 40～140g contact engaging and separating force, measure every closing in contact engaging and separating force.
2) carry out Ageing Treatment heating-up temperature: 160 DEG C, heating time: 1 hour, place under room temperature 12 hours.
3) every contact engaging and separating force after measurement Ageing Treatment.
4) variable quantity between contact engaging and separating force and closing in contact engaging and separating force after statistics Ageing Treatment.(in table 4)
Table 4(contact engaging and separating force unit g)
5) according to 22D hole contact technical requirement: contact engaging and separating force should meet 40～140g, consider after Ageing Treatment between contact engaging and separating force and closing in contact engaging and separating force that variable quantity is in-30～+ 30g scope, determine that the minimum contact engaging and separating force that closes up is 40g-(-30g)=70g, the maximum contact engaging and separating force that closes up is 140g-30g=110g, that is: closing in contact engaging and separating force should be 70～110g.
2. adopt heat treatment method to eliminate internal stress and stablize contact engaging and separating force
1) environment:
The production site cleaning of heat treatment factory building, the fire-fighting equipment of outfit is complete, intact; Baking oven is furnished with good ventilation unit; 18 DEG C of temperature in factory building; Control laboratory and other indoor 19 DEG C.
2) Technology for Heating Processing
The heating of employing baking oven, carries out Ageing Treatment to contact entirety.160 DEG C of heating-up temperatures, heat 1 hour, place 12 hours under room temperature.
3. 22D grooved bore contact is carried out to mechanical endurance, vibration, shock-testing, meet GJB599A-93 " resistance to environment separates high density small round electric connector generic specification fast " requirement.
1) test mechanical endurance
By the electric connector assembling, carry out with hand 500 times connection with separate, post-test-inspection contact, single hole contact engaging and separating force meets technical requirement 40～140g, and can meet follow-up test requirement.
2) vibration-testing
The electric connector plugging together carefully connecting the wire is installed on fixture and is fastened on vibration mechine, and all contacts are even is connected into a complete circuit, and passes to the electric current of 100mA.In whole process, access break-make indicator with the even discontinuity of monitoring contact.Connector test piece is divided into equal amount, carries out following three groups of vibration tests.
A sinusoidal vibration
It is 254mm/s that connector bears frequency its speed in the time of 10Hz～50Hz; In the time of 50Hz～140Hz, double-amplitude is 1.5mm; Be 588m/s at 140Hz～2000Hz brief acceleration
2vibration test.
Need 20min from the round frequency sweep of the gamut of 2000Hz～10Hz again from 10Hz～2000Hz.
In three mutually perpendicular each directions, vibrate 12 hours, totally 36 hours.
In each direction, divide again three kinds of situations to vibrate:
(3) vibrate at ambient temperature 4h
(2) at-55 ± 5 DEG C, vibration 4h
(3) 200 ± 5 DEG C of hot conditionss, vibration 4h
B random vibration
The power spectral density that product bears oscillating curve should be 1.0G2/Hz, and total acceleration root-mean-square value is 41.7G random vibration test.
200 ± 5 DEG C of hot conditionss, carry out vibration test.Time of vibration is longitudinal 8h, laterally 8h, altogether 16h.
C random vibration
The power spectral density that product bears oscillating curve should be 1.0G2/Hz, and total acceleration root-mean-square value is 36.6G random vibration test.
At room temperature condition, time of vibration is longitudinal 8h, laterally 8h, altogether 16h.
After vibration test, check connector, there is no electric non-continuous event.
3) shock-testing
A standard is impacted
The electric connector plugging together carefully connecting the wire is installed on fixture and is fastened on shock table.All contact is connected into a series circuit, and the electric current of logical 100mA, by the contact situation of break-make indicator inspection electric connector.
At electric connector afterbody 203.2mm ± 2mm place, bundle conductor is clamped.
It is 300G ± 15% that electric connector bears acceleration in three mutually perpendicular directions, the shock test that the burst length is 3 ± 1ms, and each direction is each impacts 3 times, 18 times altogether.
B high-strength impact
The electric connector plugging together is installed on fixture and is together fastened on the face flat board of station with horizontal and vertical directions.
Bundle conductor is fastening with support apart from product 914.4mm ± 2mm place.
All contact is connected into a series circuit, accesses the electric discontinuity that break-make indicator check circuit exceedes 1 μ s in circuit.
High-strength impact is carried out in the A level test specifying by MIL-S-901, and the each impact of each direction three times, the falling height of tup is respectively 304.8mm; 914.4mm and 1524mm.
After shock test, check connector, after vibration test, check connector, there is no electric non-continuous event.
It is as follows that described stable φ 1.5 wraps spring film perforation contact contact engaging and separating force processing step:
1. determine that φ 1.5 wraps spring film perforation contact closing in contact engaging and separating force
Determine that by testing closing in contact engaging and separating force scope should be 600～700g.Concrete test method is as follows:
1) by following four groups of contact engaging and separating force scopes, φ 1.5 hole contacts are closed up, 100 every group.
First group: 800～900g
Second group: 700～800g
The 3rd group: 600～700g
The 4th group: 500～600g
2) by above-mentioned contact Ageing Treatment, heating-up temperature: 160 DEG C, heat 1 hour, under room temperature, place 12 hours.
3) every contact engaging and separating force after measurement Ageing Treatment.
4) soak respectively protective agent, measure and soak every contact engaging and separating force after protective agent.
5) add up above result of the test (in table 5)
Table 5(contact engaging and separating force unit g)
Draw from above result of the test, after the hole contact that the 3rd group (600～700g) closes up soaks protective agent, contact engaging and separating force, within the scope of 300～600g, meets technical requirement.Therefore the contact engaging and separating force scope that closes up should be 600～700g.
2. adopt heat treatment method to eliminate internal stress and stablize contact engaging and separating force
1) environment:
The production site cleaning of heat treatment factory building, the fire-fighting equipment of outfit is complete, intact; Baking oven is furnished with good ventilation unit; 18 DEG C of temperature in factory building; Control laboratory and other indoor 19 DEG C.
2) Technology for Heating Processing
The heating of employing baking oven, carries out Ageing Treatment to contact entirety.160 DEG C of heating-up temperatures, heat 1 hour, place 12 hours under room temperature.
3. φ 1.5 is wrapped to spring film perforation contact mechanical endurance, vibration, impact, acceleration test, meet 2PX technical conditions.
1) mechanical endurance
With hand, electric connector is carried out to connection, the separation test of 500 times, the contact resistance of measuring connector contact after test is not more than 2.5m Ω.
2) vibration
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on vibration mechine.
A three mutually perpendicular axially on by the regulation of table 6 carry out frequency 10HZ～5000HZ, acceleration is 490m/s
2vibration stability test.
B three mutually perpendicular axially on by the regulation of table 7 carry out frequency 10HZ～2000HZ, acceleration is 196m/s
2vibration strength test.
In vibration test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector.
Reliably, there is not being greater than the momentary power failure phenomenon of 1 μ s in contact contact in vibration test process.
Table 6
| Test frequency | Time of vibration | Test frequency | Time of vibration | Test frequency | Time of vibration |
| 100HZ | 2min | 600HZ | 2min | 2000HZ | 1min |
| 200HZ | 2min | 700HZ | 2min | 3000HZ | 1min |
| 300HZ | 2min | 800HZ | 2min | 4000HZ | 1min |
| 400HZ | 2min | 900HZ | 2min | 5000HZ | 1min |
| 500HZ | 2min | 1000HZ | 2min | Add up to | 24min |
Table 7
| Test frequency | Time of vibration | Test frequency | Time of vibration | Test frequency | Time of vibration | Test frequency | Time of vibration |
| 10HZ | 1h | 600HZ | 20min | 1100HZ | 10min | 1600HZ | 10min |
| 20HZ | 30min | 700HZ | 10min | 1200HZ | 10min | 1700HZ | 10min |
| 50HZ | 30min | 800HZ | 10min | 1300HZ | 10min | 1800HZ | 10min |
| 80HZ | 30min | 900HZ | 10min | 1400HZ | 10min | 1900HZ | 10min |
| 200HZ | 26min | 1000HZ | 10min | 1500HZ | 10min | 2000HZ | 10min |
| ? | ? | ? | ? | ? | ? | Add up to | 336min |
3) impact
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on shock table.
At two, mutually perpendicular to carry out acceleration on be axially 4900m/s to A
2, shock duration 9 shock tests that are 2ms.
At two, mutually perpendicular to carry out acceleration on be axially 980m/s to B
2, shock duration 40 shock tests that are 3ms.
In shock test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector.
Reliably, there is not being greater than the momentary power failure phenomenon of 1 μ s in contact contact in shock test process.
4) acceleration
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on fixed acceleration test platform.
At two, mutually perpendicular to carry out acceleration on be axially 1960m/s
23min fixed acceleration test.
In acceleration test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector.
Standing in fixed acceleration test process, contact contact is reliable, do not occur being greater than the momentary power failure phenomenon of 1 μ s.
Adopting traditional handicraft φ 1.5 to wrap spring film perforation contact disqualification rate is probably that 30%, 22D grooved bore contact closing in disqualification rate is 10%; Adopt stable 22D grooved bore contact of the present invention and φ 1.5 to wrap spring film perforation contact contact engaging and separating force technique, φ 1.5 wraps spring film perforation contact disqualification rate and is less than 0.01%, 22D grooved bore contact closing in disqualification rate and is less than 0.001%; Electric connector product is because of contact contact engaging and separating force instability problem, and every product is reprocessed approximately 0.2 yuan of left and right, like this, can save and much reprocess expense, and economic benefit is considerable.
Stable 22D grooved bore contact of the present invention and φ 1.5 wrap the electric connector products such as spring film perforation contact contact engaging and separating force technique can thoroughly solve 38999,2PX and occur causing because contact engaging and separating force is defective for a long time product loose contact, circut breaking.By on the in-depth analysis that affects contact engaging and separating force stability, to take corresponding feasible technique and obtain best contact engaging and separating force scope by correct test method, lifting process level, realizes contact and becomes flexibility from inefficacy and plug together, and contact stabilization, transforms reliably.For the development of follow-up this type of new product and the improvement of existing structure product provide sufficient theory and practical experience; Ensure product quality, there is larger economy and social value.
Claims (2)
1. a stable 22D grooved bore contact contact engaging and separating force technique, is characterized in that: described grooved bore contact contact engaging and separating force processing step is as follows:
1. determine grooved bore contact closing in contact engaging and separating force scope 70～110g;
Concrete test method is as follows:
1) will close up by 40～140g contact engaging and separating force more than 100 22D jacks, measure every closing in contact engaging and separating force;
2) carry out Ageing Treatment, heating-up temperature: 150～160 DEG C, heating time: 1 hour～1.5 hours, place under room temperature more than 12 hours;
3) every contact engaging and separating force after measurement Ageing Treatment;
4) after statistics Ageing Treatment between contact engaging and separating force and closing in contact engaging and separating force variable quantity at-30～+ 30g;
5) according to 22D hole contact technical requirement: contact engaging and separating force should meet 40～140g, after consideration Ageing Treatment, between contact engaging and separating force and closing in contact engaging and separating force, variable quantity determines that at-30～+ 30g closing in contact engaging and separating force minimum is 40g-(-30g)=70g, closing in contact engaging and separating force maximum is 140g-30g=110g, that is: closing in contact engaging and separating force should be 70～110g;
2. adopt heat treatment method to eliminate internal stress and stablize contact engaging and separating force
1) environmental requirement:
Ambient temperature is greater than or equal to 10 DEG C;
2) Technology for Heating Processing
Contact entirety is carried out to Ageing Treatment; Heating-up temperature is 150～160 DEG C, and be heating time:
1 hour～1.5 hours, under room temperature, place more than 12 hours;
3. split slotted eye contact and carry out mechanical endurance, vibration, shock-testing;
1) test mechanical endurance
By the electric connector assembling, carry out 500 times connection with separate, and plug together when separating at every turn, must make free-end electric connector reach completely and plug together and separate with fixing electric connector; Connect and be 300 times/h to the maximum with the speed separating; Post-test-inspection contact, single hole contact engaging and separating force meets technical requirement 40～140g, and can meet follow-up test requirement;
2) vibration-testing
The electric connector plugging together carefully connecting the wire is installed on fixture and is fastened on vibration mechine, and all contacts are even is connected into a complete circuit, and passes to the electric current of 100mA; In whole process, access break-make indicator with the even discontinuity of monitoring contact; Connector test piece is divided into equal amount, carries out following three groups of vibration tests;
A sinusoidal vibration
It is 254mm/s that connector bears frequency its speed in the time of 10Hz～50Hz; In the time of 50Hz～140Hz, double-amplitude is 1.5mm; Be 588m/s at 140Hz～2000Hz brief acceleration
2vibration test;
Need 20min from the round frequency sweep of the gamut of 2000Hz～10Hz again from 10Hz～2000Hz;
In three mutually perpendicular each directions, vibrate 12 hours, totally 36 hours;
In each direction, divide again three kinds of situations to vibrate:
(1) vibrate at ambient temperature 4h;
(2) at-55 ± 5 DEG C, vibration 4h;
(3) 200 ± 5 DEG C of high temperature, vibration 4h;
B random vibration
The power spectral density of bearing oscillating curve should be 1.0G2/Hz, and total acceleration root-mean-square value is 41.7G random vibration test;
200 ± 5 DEG C of hot conditionss, carry out vibration test; Time of vibration is longitudinal 8h, laterally 8h, altogether 16h;
C random vibration
The power spectral density of bearing oscillating curve should be 1.0G2/Hz, and total acceleration root-mean-square value is 36.6G random vibration test;
At room temperature condition, time of vibration is longitudinal 8h, laterally 8h, altogether 16h;
After vibration test, check connector, electric discontinuity should be not more than 1 μ s;
3) shock-testing
A standard is impacted
The electric connector plugging together carefully connecting the wire is installed on fixture and is fastened on shock table; All contact should be connected into a series circuit, and the electric current of logical 100mA, by the contact situation of break-make indicator inspection electric connector;
At electric connector afterbody 203.2mm ± 2mm place, bundle conductor is clamped;
It is 300G ± 15% that electric connector bears acceleration in three mutually perpendicular directions, the shock test that the burst length is 3 ± 1ms, and each direction is each impacts 3 times, 18 times altogether;
B high-strength impact
The electric connector plugging together is installed on fixture and is together fastened on the face flat board of station with horizontal and vertical directions;
With support, bundle conductor is fastening at pitch electrical connector 914.4mm ± 2mm place;
All contact is connected into a series circuit, accesses the electric discontinuity that break-make indicator check circuit exceedes 1 μ s in circuit;
High-strength impact is carried out in the A level test specifying by MIL-S-901, and the each impact of each direction three times, the falling height of tup is respectively 304.8mm; 914.4mm and 1524mm;
After shock test, check connector, electric discontinuity should be not more than 1 μ s.
2. stable φ 1.5 wraps a spring film perforation contact contact engaging and separating force technique, it is characterized in that: described stable bag spring film perforation contact contact engaging and separating force processing step is as follows:
1. determine bag spring film perforation contact closing in contact engaging and separating force 600～700g
Concrete test method is as follows:
1) by following four groups of contact engaging and separating force scopes, φ 1.5 hole contacts are closed up, every group is greater than 100;
First group: 800～900g
Second group: 700～800g
The 3rd group: 600～700g
The 4th group: 500～600g
2) by above-mentioned contact Ageing Treatment, heating-up temperature: 150～160 DEG C, heating time: 1 hour～1.5 hours, place under room temperature more than 12 hours;
3) every contact engaging and separating force after measurement Ageing Treatment;
4) soak respectively protective agent, measure and soak every contact engaging and separating force after protective agent;
5) add up above result of the test (in table 1)
Table 1(contact engaging and separating force unit g)
According to wrapping spring film perforation contact technical requirement: contact engaging and separating force should meet 300～600g, draw from above result of the test, the 3rd group (600～700g) close up hole contact through Ageing Treatment, soak protective agent after contact engaging and separating force within the scope of 300～600g, meet technical requirement; Therefore the contact engaging and separating force that closes up should be 600～700g;
2. adopt heat treatment method to eliminate internal stress and stablize contact engaging and separating force
1) environmental requirement:
Ambient temperature is more than or equal to 10 DEG C; ;
2) Technology for Heating Processing
Contact entirety is carried out to Ageing Treatment; According to spring leaf material decision heating-up temperature: 150～160 DEG C, heating time: 1 hour～1.5 hours, place under room temperature more than 12 hours;
3. to bag spring film perforation contact mechanical endurance, vibration, impact, acceleration test, meet 2PX technical conditions;
1) mechanical endurance
Electric connector is carried out to connection, the separation test of 500 times to be not more than the speed of 8 beats/min, the contact resistance of measuring connector contact after test should be not more than 2.5m Ω;
2) vibration
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on vibration mechine;
A three mutually perpendicular axially on by the regulation of table 2 carry out frequency 10Hz～5000Hz, acceleration is 490m/s
2vibration stability test;
B three mutually perpendicular axially on by the regulation of table 3 carry out frequency 10Hz～2000Hz, acceleration is 196m/s
2vibration strength test;
In vibration test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector; Shaking
In dynamic test process, contact should contact reliably, should not occur being greater than the momentary power failure phenomenon of 1 μ s;
Table 2
Table 3
3) impact
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on shock table;
At two, mutually perpendicular to carry out acceleration on be axially 4900m/s to A
2, shock duration 9 shock tests that are 2ms;
At two, mutually perpendicular to carry out acceleration on be axially 980m/s to B
2, shock duration 40 shock tests that are 3ms;
In shock test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector;
In shock test process, contact should contact reliably, should not occur being greater than the momentary power failure phenomenon of 1 μ s;
4) acceleration
All connector contacts are connected into loop circuit, and logical 30V, 0.1A direct current, be fastened on fixed acceleration test platform;
At two, mutually perpendicular to carry out acceleration on be axially 1960m/s
23min fixed acceleration test;
In acceleration test process, the disconnected indicator of electricity consumption circulation checks the connection situation of electric connector;
Should contact reliably standing contact in fixed acceleration test process, should not occur being greater than the momentary power failure phenomenon of 1 μ s.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610004768.5A CN105680285B (en) | 2014-04-18 | 2014-04-18 | A kind of stable 22D grooved bore contact contact engaging and separating force techniques |
| CN201310738432.8A CN103872549B (en) | 2014-04-18 | One stablizes φ 1.5 bag spring film perforation contact contact engaging and separating force technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310738432.8A CN103872549B (en) | 2014-04-18 | One stablizes φ 1.5 bag spring film perforation contact contact engaging and separating force technique |
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| CN201610004768.5A Division CN105680285B (en) | 2014-04-18 | 2014-04-18 | A kind of stable 22D grooved bore contact contact engaging and separating force techniques |
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| CN103872549B CN103872549B (en) | 2016-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186260A (en) * | 2015-09-07 | 2015-12-23 | 厦门大恒科技有限公司 | Preparation method for elastic curved surface self-locking fixing apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536717A (en) * | 2003-09-25 | 2004-10-13 | 徐珊珊 | Integrated hyperbolical spring-bearing receptacle contact component and its technological process |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1536717A (en) * | 2003-09-25 | 2004-10-13 | 徐珊珊 | Integrated hyperbolical spring-bearing receptacle contact component and its technological process |
Non-Patent Citations (2)
| Title |
|---|
| 卢明胜等: "线簧插孔的力学模型分析", 《机电元件》 * |
| 潘骏等: "电连接器接触件结构分析与插拔试验", 《中国机械工程》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186260A (en) * | 2015-09-07 | 2015-12-23 | 厦门大恒科技有限公司 | Preparation method for elastic curved surface self-locking fixing apparatus |
| CN105186260B (en) * | 2015-09-07 | 2017-11-07 | 厦门大恒科技有限公司 | A kind of preparation method of elastic surface self-locking fixer |
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