CN106505324A - A kind of contact element and preparation method thereof - Google Patents
A kind of contact element and preparation method thereof Download PDFInfo
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- CN106505324A CN106505324A CN201610939975.XA CN201610939975A CN106505324A CN 106505324 A CN106505324 A CN 106505324A CN 201610939975 A CN201610939975 A CN 201610939975A CN 106505324 A CN106505324 A CN 106505324A
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- spring
- contact element
- cup spring
- pin
- cup
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
- H01R4/4854—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a wire spring
- H01R4/4863—Coil spring
- H01R4/4872—Coil spring axially compressed to retain wire end
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/007—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for elastomeric connecting elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention discloses a kind of contact element, the plugging hole component mated including contact pin and with contact pin；Contact pin includes that pin body and insulator cap, insulator cap are arranged at pin body front end；Plugging hole component includes that receptacle body and cup spring, cup spring are arranged inside receptacle body front end, and cup spring section is ellipse, and has inside radian, and radian is 60 °；Cup spring includes the support collar of spring silk and retainer spring silk.Its preparation method is comprised the following steps：（1）Around spring；（2）Cleaning；（3）Plating；（4）Welding；（5）Assembling.The contact element mechanical life is long, up to 10000 times plugs, can be widely used for plugging the fields such as frequent field, impact resisting vibrating.
Description
Technical field
The invention belongs to contact element technical field, and in particular to a kind of contact element and preparation method thereof.
Background technology
Need using the big electricity for possessing impact resisting vibrating in a large number for realizing electrical communications and control on New-energy electric vehicle
Stream connector, the high current connector of electric automobile are mainly made up of contact element, housing, insulator and four major part of adnexa.
Wherein, contact element is the key core part that high current connector completes electric linkage function, and the quality of contact element is directly
The security performance of automobile is had influence on, while in the high current connector needed for the charging pile supporting with electric automobile and charging gun
Mechanical life is required more than 10000 times, and the mechanical life of convention connectors is usually 1000 times, this is to high current connector
Contact element propose higher technical requirements.
At present, the contact element critical piece of connector industry is in the following manner：
1st, close around coil spring, its technical process is：（1）Silk electroplated Ni using QSn6.5-0.12/Ag 3-5；（2）Using frock system
Tool is close around bullet is made in the gap for forming very little so between jacket wall and silk with 15 degree or so of gradient artificial threading on thin-wall sleeve
Property；（3）Silk braid is pressed into receptacle body；（4）Riveting makes silk braid be integrated with receptacle body.Close high current and impact can be met around coil spring
The requirement of vibration, but hand wound's silk braid concordance is difficult to control to, low production efficiency, need to cultivate skilled worker, and production cost is high.
2nd, jack splits slot type, and its technical process is：（1）With T2 materials processing receptacle bodies；（2）Receptacle body is carried out splitting groove 6-
8；（3）Close up；（4）Heat treatment；（5）Plating；（6）Upper jump ring（On receptacle body external diameter, 3-4 roads keep jump ring）.Can meet big
The mechanical life of electric current and 1000 times, but high cost, contact engaging and separating force is big；Additionally, T2 electric conductivity and plasticity are preferably, but intensity and hardness
Poor, easily deform, it is impossible to complete the requirement of connector plugging 10000 times.
3rd, spring, also known as Folium Salicis Babylonicae spring are preced with, and its technical process is：（1）With H65 or C27000 punch formings, this process need to be descended extremely
The high accurate punching machine of point, all needs to make particular manufacturing craft to different size, and early investment is big；（2）Heat treatment, because of H65 or C27000
During flavone band production, annealing quality is poor, easily generates heat, can not meet the requirement of high current connector temperature rise during super-high-current,
Produce operating simultaneously loaded down with trivial details, and the quality problems for occurring in process of production are also more；（3）Plating；（4）Assemble with receptacle body.
Change technological process early investment big, high cost can meet 1000 mechanical lives of 200A or so high currents as contact point is less
Requirement, but contact engaging and separating force is larger, relatively difficult to the mechanical life for requiring more than 10000 times.
4th, spring in spring, its technical process is：（1）Using beryllium-bronze filament winding spring；（2）Welding；（3）Heat treatment, this process exist
In production process, annealing quality is poor, and production running is loaded down with trivial details；（4）Plating.Due to the gap after plating between spring silk little, electrodeposited coating
Concordance is poor, and electric conductivity is had a certain impact, and the quality problems for occurring in process of production are also relatively more, and its profit is not
It is highly desirable.
Therefore, it is badly in need of at present wanting a kind of low production cost, steady quality, excellent performance meet high current and impact and shake
The dynamic contact element for requiring.
Content of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of contact element and preparation method thereof, can be effective
Solve contact element quality in prior art unstable, poor performance, and production cost is high, it is impossible to meet high current and impact shock
The problem of requirement.
For achieving the above object, the technical solution adopted for the present invention to solve the technical problems is：
A kind of contact element, the plugging hole component mated including contact pin and with contact pin；Contact pin includes pin body and insulator cap, insulation
Cap is arranged at the front end of pin body, with pin body interference fit；Plugging hole component includes that receptacle body and cup spring, cup spring are arranged at jack
Inside body front end, cup spring section is ellipse, and has inside radian, and radian is 60 °；Cup spring includes spring silk and retainer spring silk
Support collar, support collar are arranged inside spring silk.
Further, cup spring number can be arranged according to size of current, and such as Φ 15 need to arrange 3 cup springs.
Further, the material of cup spring is QSn6.5-0.1-Y2 tin bronzes.
Further, the outer layer of cup spring is coated with Cu/Ep.Ni2Ag5.
Further, internal diameter of the external diameter of support collar more than receptacle body, less than receptacle body（5）External diameter.
A kind of high current connector, including above-mentioned contact element, installing plate, housing and modeling for fixed shell and cable
Envelope plastic cement；
Installing plate includes the first front mounting plate, installing plate after installing plate, the second front mounting plate and second after first；Install before first
Installing plate clamping and pin body periphery in contact element is arranged at after plate and first；Board is installed after the second front mounting plate and second
Connect and be arranged at the periphery of receptacle body in contact element；
Housing includes plug casing and Socket casing；Plug casing is fixedly installed on after the second front mounting plate and second outside installing plate
Week；Socket casing is fixedly installed on the periphery of installing plate after the first front mounting plate and first；
Cable is connected in the rear end of receptacle body in contact element.
Further, above-mentioned high current connector also includes the collar for limiting installing plate side-to-side movement.
Further, above-mentioned high current connector also includes the adapter sleeve of stabilized plug and socket.
Further, above-mentioned high current connector also includes the close of gap between seal socket housing and the second front mounting plate
Seal.
The preparation method of above-mentioned contact element, comprises the following steps：
（1）Around spring：With QSn6.5-0.1-Y2 tin bronzes as material coiling cup spring matrix；
（2）Cleaning：By step（1）In the spring silk mass concentration that winds be 5% sulfuric acid cleaned, be then placed in clear water super
Clean under the conditions of sound wave, then rinse in 80 DEG C of hot water, finally dry；
（3）Plating：Spring silk after by cleaning is electroplated, silver-plated after electronickelling, and the thickness of electronickelling is 2 μm, electrosilvering thickness
For 5 μm, plating is cleaned after finishing, and is first cleaned in 50-60 DEG C of hot water, then is cleaned in distilled water at room temperature,
Drying is finally taken out；
（4）Welding：Load support collar in the spring silk that has electroplated, shaped in frock, then by spring silk, support collar
It is placed in together with frock in nitrogen lasers bonding machine and welds, makes cup spring；
（5）Assembling：Cup spring is placed in receptacle body front end and is assembled into plugging hole component, insulator cap is installed in pin body front end, is assembled into
Contact pin, contact pin and plugging hole component coupling, obtain contact element.
Further, step（1）Conductivity >=the 7.83MS/m of middle QSn6.5-0.1-Y2 tin bronzes.
Step（3）Middle Ni-Speed：Hydrochloric acid using Nickel dichloride hexahydrate and mass concentration as 30-33% is used as electrolyte, electricity
In solution matter, Nickel dichloride hexahydrate concentration is 240g/L, and the amount of added hydrochloric acid reaches 320mL/L, using nickel plate as anode, spring silk work
For negative electrode, it is 3.5-7.5A/dm in electric current density2Under the conditions of electroplate 2-4min.
Step（3）Middle silver plating process：With silver chloride and potassium carbonate as electrolyte, in electrolyte, both concentration are respectively 30-
35g/L and 15-30g/L, using silver as anode, spring silk, as negative electrode, is 0.5-2A/dm in electric current density2Under the conditions of electroplate 5-
15min.
The invention has the advantages that：
（1）After contact pin inserts receptacle body through cup spring, cup spring can be produced by the outside power of contact pin and receptacle body inward force
Raw elastic deformation so that the Elastic Contact under any state realized by contact pin with receptacle body by cup spring, so as to ensure that electric current and
The reliability of signal transmission；During coiling spring silk, 60 ° are inclined per ring spring silk, form radial direction cup spring after welding, its objective is to allow prepared
Cup spring deformation appropriateness；If angle of inclination is more than 60 ° during coiling spring silk, can increase because of cup spring deflection after contact pin insertion receptacle body
And greatly increase contact engaging and separating force；When angle of inclination is less than 60 °, cup spring elastic deformation amount is not enough so that contact pin and receptacle body connect
Touch not closely, the final super-high-current that produces further causes temperature rise exceeded.
In order to ensure that cup spring and receptacle body, cup spring and contact pin have big contact area, and it is not only point contact, therefore
Cup spring section is turned to ellipse, it is ensured that the demand of super-high-current.
（2）The present invention from QSn6.5-0.1-Y2 tin bronzes as coiling cup spring matrix, its have high intensity, high resiliency,
Wearability and diamagnetism, can resist 10000 plugs indeformable, it is ensured that high-current socket connector after plating Cu/Ep.Ni2Ag5
Service behaviour；There is excellent electric conductivity, electrical conductivity >=7.83MS/m, it is ensured that new-energy automobile adapter high current
Require；Under hot and cold conditions, processability is good, has higher flame resistance to electric spark, and solderable and fine weldering, machinability are good
Good；Anti-corrosion in air, fresh water（Automobile charging gun platform is often exposed in air）, design the material property that selects and be fully able to
Ensure the use requirement of new-energy automobile adapter.
Because QSn6.5-0.1-Y2 tin bronzes have excellent cold-workability, electric conductivity and mechanical performance, and elastic limit
Very high, therefore extremely meet making elastic contact element.
（3）Contact element simple production process, low production cost, production efficiency are high, and qualification rate is high, from production to finished product,
Material need not carry out heat treatment, direct cold working one-shot forming.
With close compared with coil spring, the design is directly using numerical control spring winding machine in spring operation, is faster more convenient, reduces
The high cost of artificial threading.
Compared with slot type is split with jack, there is no processing clout in the contact element of the design processing, reduce the cost of raw material,
And it is little that contact engaging and separating force splits slot type than jack.
Compared with hat spring, a series of spring silk of the design can be processed on a numerical control spring winding machine, it is not necessary to mould
Tool, reduces early investment cost.
Compared with spring in spring, the design is once cold-formed, need not carry out heat treatment, simplify operation after molding,
The minimizing of operation directly reduces cost, and reduces the chance of error, greatly reduces disqualification rate, improves production effect
Rate.
（4）Contact element mechanical life >=10000 time the plug（Common contact element mechanical life is 1000 times）, can be wide
General for plug frequently field, the such as charging socket of New-energy electric vehicle, power line, holding wire, manual maintenance are switched
（MSD）Deng；There is the field of impact resisting vibrating, such as track traffic, military connector, space flight and aviation etc..According to using field and
Use requirement devises the contact element of the series such as Φ 6, Φ 8, Φ 10, Φ 12 and Φ 15, reaches design effect by experimental verification
Really.
Description of the drawings
Structural representations of the Fig. 1 for contact element；
Profiles of the Fig. 2 for contact element；
Decomposing sections of the Fig. 3 for contact element；
Fig. 4 is cup spring structural representation；
Fig. 5 is cup spring side view；
Fig. 6 is the sectional view that contact pin inserts plugging hole component；
Structural representations of the Fig. 7 for high current connector；
Profiles of the Fig. 8 for high current connector.
Wherein, 1, contact pin；2nd, plugging hole component；3rd, pin body；4th, insulator cap；5th, receptacle body；6th, cup spring；7th, spring silk；8th, prop up
Frame collar；9th, adapter sleeve；10th, cable；11st, plastic packaging plastic cement；12nd, the first front mounting plate；13rd, installing plate after first；14th, before second
Installing plate；15th, installing plate after second；16th, plug casing；17th, Socket casing；18th, collar；19th, plug；20th, socket；21st, bullet
Spring；22nd, sealing ring；23 screws.
Specific embodiment
Embodiment 1
With reference to Fig. 1-8, the present embodiment provides a kind of contact element, the plugging hole component 2 mated including contact pin 1 and with contact pin 1.
Contact pin 1 includes that pin body 3 and insulator cap 4, insulator cap 4 are arranged at 3 front end of pin body, and 3 interference fit of pin body,
The effect one of insulator cap 4 is to prevent conduction, when contact pin 1 is loaded on plug 19, if contact pin 1 is conductive, the insulator cap 4 in contact pin 1
Insulating effect can be played, it is to avoid human electric shock；Effect two is to prevent arcing, during warm swap, is the insulation in contact pin 1 first
Cap 4 is contacted with plugging hole component 2, can prevent the generation of electric arc.
Plugging hole component 2 includes receptacle body 5 and cup spring 6；Receptacle body 5 is slotted as 135 ° of V-grooves, height of the groove width more than cup spring 6
Degree, groove-root diameter less than cup spring 6 external diameter, slot number number determined according to size of current；Before cup spring 6 is arranged at receptacle body 5
In end slot, 6 section of cup spring is ellipse, and has inside radian, and radian is 60 °, and cup spring 6 is provided with 3；Cup spring 6 includes spring
Silk 7 and the support collar 8 of retainer spring silk 7；The material of spring silk 7 is QSn6.5-0.1-Y2 tin bronzes, also plates in the outer layer of spring silk 7
There is Cu/Ep.Ni2Ag5.The forming process of cup spring 6 is：Spring silk 7 is turned to 6 matrix of cup spring first, then support collar 8 is loaded on
In 6 matrix of cup spring, shape in frock, then weld under laser-beam welding machine again, that is, constitute cup spring 6, because of support collar 8
External diameter is conducive to retainer spring silk 7 and which is suitably deformed more than the internal diameter of receptacle body 5.
A kind of high current connector, including above-mentioned contact element, installing plate, housing and for fixed shell and cable 10
Plastic packaging plastic cement 11；Installing plate is installed after including installing plate 13 after the first front mounting plate 12, first, the second front mounting plate 14 and second
Plate 15；13 clamping of installing plate and 3 periphery of pin body in contact element is arranged at after first front mounting plate 12 and first；Pacify before second
15 clamping of installing plate and 5 periphery of receptacle body in contact element is arranged at after dress plate 14 and second；
Housing includes plug casing 16 and Socket casing 17；After plug casing 16 is fixedly installed on the second front mounting plate 14 and second
15 periphery of installing plate；Socket casing 17 is fixedly installed on 13 periphery of installing plate after the first front mounting plate 12 and first；
Cable 10 is connected in 5 rear end of receptacle body in contact element.
After contact pin 1, the first front mounting plate 12, first, installing plate 13 and Socket casing 17 constitute socket 20；Plugging hole component
2nd, after the second front mounting plate 14, second, installing plate 15, plug casing 16, cable 10 and plastic packaging plastic cement 11 constitute plug 19.
Collar 18, stabilized plug 19 and the socket for limiting installing plate side-to-side movement is additionally provided with above-mentioned high current connector
Gap between 20 adapter sleeve 9, the spring 21 of the restriction motion of adapter sleeve 9 and seal socket housing 17 and the second front mounting plate 14
Sealing ring 22.
During use, plug 19 and socket 20 are connected, can be threaded connection herein, when socket 20 screws in plug 19,
Contact pin 1 is inserted in receptacle body 5 through cup spring 6, and cup spring 6 can be produced bullet by the outside power of contact pin 1 and 5 inward force of receptacle body
Property deformation so that be completely embedded between contact pin 1 and receptacle body 5.First front mounting plate 12 inserts the second front mounting plate 14 and is connected
In the space of set 9, plug casing 16 and Socket casing 17 form an entirety, are stuck in outside installing plate, and plug casing 16 is outer also to be set
Adapter sleeve 9 is equipped with, adapter sleeve 9 carries out side-to-side movement by spring 21, when adapter sleeve 9 is moved right, spring 21 is in compression shape
State, now the ceramic bead of socket 20 could enter in the groove of plug casing 16, socket 20 firm with plug 19 well could connect
Connect.Collar 18 is additionally provided with plug 19 and socket 20, and the effect of collar 18 is to limit installing plate side-to-side movement, plays spacing work
With.Be additionally provided with sealing ring 22 on socket 20, the effect of sealing ring 22 be seal socket housing 17 and the second front mounting plate 14 it
Between gap.Screw 23 is additionally provided with 1 end of contact pin, crimping terminal of wire is threadedly coupled with the screw 23,5 end of receptacle body
End is connected with cable 10, cable 10 is fixed up with plug casing 16 by plastic packaging plastic cement 11.
The preparation method of above-mentioned contact element, comprises the following steps：
（1）Around spring：With QSn6.5-0.1-Y2 tin bronzes as material, coiling cup spring matrix on numerical control spring winding machine；Used
QSn6.5-0.1-Y2Conductivity >=the 7.83MS/m of tin bronze；
（2）Cleaning：By step（1）In the spring silk mass concentration that winds be 5% sulfuric acid cleaned, be then placed in clear water super
Clean under the conditions of sound wave, then rinse in 80 DEG C of hot water, finally dry；
（3）Plating：Spring silk after by cleaning is electroplated, Cu/Ep.Ni2Ag5, and the thickness of electronickelling is 2 μm, 5 μm of re-plating
Silver, plating are cleaned after finishing, and are first cleaned in 60 DEG C of hot water, then are cleaned in distilled water at room temperature, finally take
Go out drying；
Wherein, Ni-Speed：Using hydrochloric acid that Nickel dichloride hexahydrate and mass concentration are 30% as electrolyte, six water in electrolyte
It is 240g/L to close chlorination nickel concentration, and the amount of added hydrochloric acid reaches 320mL/L, using nickel plate as anode, spring silk as negative electrode, in electricity
Current density is 5.5A/dm2Under the conditions of electroplate 3min；
Silver plating process：With silver chloride and potassium carbonate as electrolyte, in electrolyte, both concentration are respectively 30g/L and 15g/L, with silver
Used as anode, spring silk, as negative electrode, is 1.0A/dm in electric current density2Under the conditions of electroplate 10min；
（4）Welding：Load support collar in the spring silk that has electroplated, shaped in frock, then by spring silk, support collar
It is placed in together with frock in nitrogen lasers bonding machine and welds, cup spring；
（5）Assembling：Cup spring is placed in receptacle body front end and is assembled into plugging hole component, insulator cap is installed in pin body front end, is assembled into
Contact pin, contact pin and plugging hole component coupling, obtain contact element.
Experimental example
By taking 15 cup springs of Φ as an example, its spring silk is 0.3mm, and cup spring internal diameter is 15mm, is highly 3mm, assembles them into contact element,
Then electric performance test is carried out to contact element：
Contact resistance：Test condition USCAR-2, Section 5.3.1.4, test request ＜ 1.5m Ω, actual test value is
0.22 m Ω, meet and require.
Static intensification：Test request meets 135mm2Cable, 42 DEG C of electric current 400A, temperature rise ＜, 30 DEG C of actual test value meet
Require.
Connect-disconnect life：10000 circulation plugs of test request, test a temperature rise, 42 DEG C of temperature rise ＜, and remember per 2000 times
Record separating force, actual separation value start as 23N or so, and with the increase of plug number of times, separating force is gradually decreased, and insert for 10000 times
End is pulled out, separating force is 18N, meet requirement of the separating force in 15-30N；Actual temperature rise initial value is 30 DEG C, with plug number of times
Increase, temperature rise gradually increases, after 10000 plugs, temperature rise value is 38 DEG C, meets the requirement of 42 DEG C of temperature rise ＜.
Vibration temperature rise：42 DEG C of test request USCAR-2.Section5.5.6.4, temperature rise ＜, 35 DEG C of actual test value are full
Foot is required.
High temperature service life：85 DEG C of test request temperature, time 1008h measure a contact resistance, actual test every 200h
Measured value afterwards is 38 DEG C, meets the requirement of 42 DEG C of temperature ＜.
Thermal shock：- 40 DEG C of test request/85 DEG C, each temperature 30min, conversion time are in 30s, circulate 100 times,
42 DEG C of temperature rise ＜, 35 DEG C of actual test value meet and require.
Humiture is circulated：Test according to USCAR-2.Section5.6.2, it is desirable to which -40 DEG C of temperature ~ 85 DEG C are circulated 40 times, examination
250A temperature rise tests, 42 DEG C of temperature increase requirement ＜ is carried out after testing, and actual measured value is 35 DEG C, meets and requires.
Example is connected in Φ 6, Φ 10 and 12 cup springs of Φ respectively, is tested according to above-mentioned test event, is satisfied by requiring, its
In, in static intensification project, 6 cup springs of Φ meet 16mm2Cable, electric current are 80A；10 cup springs of Φ meet 70mm2Cable, electric current is
250A；12 cup springs of Φ meet 70mm2Cable, electric current are 250A.
Claims (8)
1. a kind of contact element, it is characterised in that including contact pin（1）And and contact pin（1）The plugging hole component of coupling（2）；Described
Contact pin（1）Including pin body（3）And insulator cap（4）, the insulator cap（4）It is arranged at pin body（3）Front end, with pin body
（3）Interference fit；The plugging hole component（2）Including receptacle body（5）And cup spring（6）, the cup spring（6）It is arranged at receptacle body（5）
Inside front end, cup spring（6）Section is ellipse, and has inside radian, and radian is 60 °；The cup spring（6）Including spring silk（7）
With retainer spring silk（7）Support collar（8）, support collar（8）It is arranged at spring silk（7）Internal.
2. contact element according to claim 1, it is characterised in that cup spring（6）Material be that QSn6.5-0.1-Y2 stannum is blue or green
Copper.
3. contact element according to claim 1 and 2, it is characterised in that cup spring（6）Outer layer be coated with Cu/
Ep.Ni2Ag5.
4. contact element according to claim 1, it is characterised in that support collar（8）External diameter be more than receptacle body（5）'s
Internal diameter, less than receptacle body（5）External diameter.
5. the preparation method of the contact element described in any one of claim 1-4, it is characterised in that comprise the following steps：
（1）Around spring：With QSn6.5-0.1-Y2 tin bronzes as material coiling cup spring matrix；
（2）Cleaning：By step（1）In the spring silk mass concentration that winds be 5% sulfuric acid cleaned, be then placed in clear water super
Clean under the conditions of sound wave, then rinse in 80 DEG C of hot water, finally dry；
（3）Plating：Spring silk after by cleaning is electroplated, silver-plated after electronickelling, and the thickness of electronickelling is 2 μm, electrosilvering thickness
For 5 μm, plating is cleaned after finishing, and is first cleaned in 50-60 DEG C of hot water, then is cleaned in distilled water at room temperature,
Drying is finally taken out；
（4）Welding：Load support collar in the spring silk that has electroplated, shaped in frock, then by spring silk, support collar
It is placed in together with frock in nitrogen lasers bonding machine and welds, makes cup spring；
（5）Assembling：Cup spring is placed in receptacle body front end and is assembled into plugging hole component, insulator cap is installed in pin body front end, is assembled into
Contact pin, contact pin and plugging hole component coupling, obtain contact element.
6. the preparation method of contact element according to claim 5, it is characterised in that step（1）Middle QSn6.5-0.1-Y2
Conductivity >=the 7.83MS/m of tin bronze.
7. the preparation method of contact element according to claim 5, it is characterised in that step（3）Middle Ni-Speed：With six
Hydrated nickel chloride and mass concentration for 30-33% hydrochloric acid as electrolyte, in electrolyte, Nickel dichloride hexahydrate concentration is 240g/
L, the amount of added hydrochloric acid reach 320mL/L, and using nickel plate as anode, spring silk, as negative electrode, is 3.5-7.5A/ in electric current density
dm2Under the conditions of electroplate 2-4min.
8. the preparation method of contact element according to claim 5, it is characterised in that step（3）Middle silver plating process：With chlorine
It is electrolyte to change silver and potassium carbonate, and in electrolyte, both concentration are respectively 30-35g/L and 15-30g/L, using silver as anode, spring
Silk, as negative electrode, is 0.5-2A/dm in electric current density2Under the conditions of electroplate 5-15min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258459A (en) * | 2017-12-13 | 2018-07-06 | 太原航空仪表有限公司 | A kind of high temperature resistant minor diameter insulation switching |
| CN113659369A (en) * | 2021-08-19 | 2021-11-16 | 路鑫科技(东莞)有限公司 | Conduction piece for connecting power source and circuit board |
| WO2022100024A1 (en) * | 2020-11-11 | 2022-05-19 | 宁波芯合为一电子科技有限公司 | Assembly-type electric spark prevention plug connector |
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| CN108258459A (en) * | 2017-12-13 | 2018-07-06 | 太原航空仪表有限公司 | A kind of high temperature resistant minor diameter insulation switching |
| WO2022100024A1 (en) * | 2020-11-11 | 2022-05-19 | 宁波芯合为一电子科技有限公司 | Assembly-type electric spark prevention plug connector |
| CN113659369A (en) * | 2021-08-19 | 2021-11-16 | 路鑫科技(东莞)有限公司 | Conduction piece for connecting power source and circuit board |
| CN113659369B (en) * | 2021-08-19 | 2024-02-27 | 路鑫科技(东莞)有限公司 | Conduction piece for connecting power source and circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106505324B (en) | 2018-11-20 |
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