CN110165453B - Multi-core coaxial injection molding electric connector socket - Google Patents

Multi-core coaxial injection molding electric connector socket Download PDF

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Publication number
CN110165453B
CN110165453B CN201910440605.5A CN201910440605A CN110165453B CN 110165453 B CN110165453 B CN 110165453B CN 201910440605 A CN201910440605 A CN 201910440605A CN 110165453 B CN110165453 B CN 110165453B
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China
Prior art keywords
contact pin
groove
injection molding
iii
contact
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CN201910440605.5A
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Chinese (zh)
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CN110165453A (en
Inventor
朱赫
杜建东
蒋磊
王敏兴
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Suzhou Huayang Aerospace Electric Co Ltd
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Suzhou Huayang Aerospace Electric Co Ltd
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Priority to CN201910440605.5A priority Critical patent/CN110165453B/en
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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/17—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member on the pin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

The invention relates to a multi-core coaxial injection molding electric connector socket which comprises a socket assembly, wherein the socket assembly is formed by machining an injection molding assembly, and the injection molding assembly is formed by Peek injection molding after being combined with a nut through a welding piece; the welding joint piece comprises a plurality of contact pin joint pieces and a plurality of welding grooves arranged on the periphery of the metal ring, and the corresponding contact pin joint pieces are arranged in the welding grooves; a plurality of spring coils are embedded and sleeved in the metal ring; the inner wall of the injection molding part is processed into a plurality of step structures, an inner groove is formed in the middle of a step surface in the injection molding part, and the spring coil is arranged in the inner groove correspondingly. The invention provides a multi-core coaxial injection molding electric connector socket, which solves the technical problems of coaxial rotation and unstable multi-core coaxial transmission of an electric connector in the prior art.

Description

Multi-core coaxial injection molding electric connector socket
Technical Field
The invention relates to the technical field of connectors, in particular to an electric connector socket capable of realizing self-rotating contact, and particularly relates to a multi-core coaxial design peek injection-molded electric connector socket.
Background
At present, injection-molded electrical connectors are mainly classified into single-core injection-molded electrical connectors, multi-core injection-molded electrical connectors, and coaxial injection-molded electrical connectors; the single-core injection molding electric connector is characterized in that the number of contact pins or contact pieces in the connector is 1, an insulating medium body wraps the contact pins or the contact pieces, and the single-core injection molding electric connector is divided into a metal shell and a non-metal shell; the multi-core injection molding electric connector is characterized in that a plurality of contact pins or contact elements are arranged in a certain rule in the connector, and are isolated by insulating media to realize the electrical insulation among the contact elements; the coaxial injection molding electric connector is divided into a single-core coaxial connector and a multi-core coaxial connector, wherein the single-core coaxial connector comprises an inner contact piece and an outer contact piece, and the multi-core coaxial connector comprises a plurality of contact pieces and is coaxially arranged.
The coaxial injection-molded electric connector is used as an important device for signal transmission and transfer, the mechanical property and the electrical stability of the coaxial injection-molded electric connector are particularly important, the good insulation property, the low leakage current and the low airtight leakage are measurement indexes of the injection-molded electric connector, and the indexes determine whether the injection-molded electric connector can stably run in the fields of aerospace and oil exploitation.
Therefore, because the types of connectors are different, the requirements of insulation pressure resistance, current leakage and air tightness are different, and in order to further meet the industrial production requirements, a multi-core coaxial injection molding electric connection socket needs to be developed, which not only can realize coaxial transmission of multi-core signals, but also can freely rotate between a plug and a socket and can be used for application of rotary equipment.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides the multi-core coaxial injection molding electric connector socket and solves the technical problems of coaxial rotation and unstable multi-core coaxial transmission of the electric connector in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: a multi-core coaxial injection molding electric connector socket comprises a socket assembly, wherein the socket assembly is formed by machining an injection molding assembly, the injection molding assembly is formed by injection molding through peek after being combined with a nut through a welding piece, the welding assembly comprises an inner inserting needle assembly and a welding assembly sleeved outside the inner inserting needle assembly in a surrounding mode, and the inner inserting needle assembly is fixed with the welding assembly through a nut in a combined mode through threads; the welding joint piece comprises a plurality of contact pin joint pieces and a plurality of welding grooves arranged on the periphery of the metal ring, and the corresponding contact pin joint pieces are arranged in the welding grooves; a plurality of spring coils are embedded and sleeved in the metal ring; the inner wall of the injection molding part is processed into a plurality of step structures, an inner groove is formed in the middle of a step surface in the injection molding part, and the spring coil is arranged in the inner groove correspondingly.
In a preferred embodiment of the present invention, the pin assembly comprises a pin and a dielectric body sleeved on the pin; the inner inserting needle assembly comprises an inner inserting needle arranged in the welding assembly and a drum spring sleeved outside the inner inserting needle.
In a preferred embodiment of the invention, the interior of the metal ring adopts a smooth through hole type design, and the top end of the inner hole is provided with a chamfer; the outer surface of the metal ring is provided with a step and an outer groove, the step comprises a first step, a second step, a third step and a fourth step, the first step is used for injection molding positioning, the diameter of the step is the largest at the top end of the metal ring, the diameter of the step minus the diameter of the step third is equal to the diameter of the step third minus the diameter of the step fourth, the axial lengths of the step second, the step third and the step fourth are equal, the outer end surfaces of the step second, the step third and the step fourth are respectively provided with one welding groove, and the welding grooves are uniformly distributed in a 120-degree mode in a projection mode towards the top end of the metal ring; knurling is arranged on the surfaces of the second step, the third step and the fourth step.
In a preferred embodiment of the invention, the outer groove comprises a first outer groove, a second outer groove and a third outer groove, the width of the first outer groove is larger than that of the second outer groove and that of the third outer groove, the width of the second outer groove is equal to that of the third outer groove, and the diameter of the bottom of the second outer groove is larger than that of the bottom of the third outer groove.
In a preferred embodiment of the invention, the front section of the inner inserting needle is provided with a groove for mounting a drum spring; the middle part of the inner contact pin is provided with a contact pin boss, the tail end of the inner contact pin is provided with a milling flat step, a thread is arranged from the milling flat step to the end face of the contact pin boss, and the tail end of the inner contact pin is fixedly butted with a nut arranged in the welding joint piece through the thread.
In a preferred embodiment of the invention, the contact pins comprise a first contact pin, a second contact pin and a third contact pin, the lengths of the first contact pin, the second contact pin and the first contact pin are in an equidistance decreasing trend, and the length of the first contact pin minus the length of the second contact pin is equal to the length of the second contact pin minus the length of the third contact pin; the first contact pin, the second contact pin and the third contact pin are provided with bosses at the same distance from the tail end.
In a preferred embodiment of the present invention, the dielectric body comprises a first dielectric body sleeved outside the first pin, a second dielectric body sleeved outside the second pin, and a third dielectric body sleeved outside the third pin, wherein the lengths of the third dielectric body, the second dielectric body and the first dielectric body are reduced in an equidistant manner, and the length of the first dielectric body minus the length of the second dielectric body is equal to the length of the second dielectric body minus the length of the third dielectric body; the medium body I, the medium body II and the medium body III are designed in a tubular shape, the inner diameters of the medium body I, the medium body II and the medium body III are respectively equal to the needle diameters of the contact pin I, the contact pin II and the contact pin III, and the outer diameters of the medium body I, the medium body II and the medium body III are respectively the same as the diameters of the contact pin I, the contact pin II and the contact pin III bosses; the decreasing lengths of the first dielectric body, the second dielectric body and the third dielectric body are the same as the decreasing lengths of the first contact pin, the second contact pin and the third contact pin.
In a preferred embodiment of the invention, the nut is provided with double grooves in a symmetrical shape, and the double grooves are used for filling the peek injection molding; the injection molding assembly is formed by fixing a nut and a welding assembly through peek injection molding under high temperature and high pressure, the nut and the welding assembly are bonded and injected into a whole, a glue stacking groove is formed in the tail end of the injection molding assembly, the bottom end of the glue stacking groove is flush with boss surfaces of the first contact pin, the second contact pin and the third contact pin, and the bottom end of the glue stacking groove is slightly lower than the end surface of the nut; the tail end face of the injection molding part is higher than the tail ends of the first contact pin, the second contact pin and the third contact pin.
In a preferred embodiment of the invention, the inner wall of the injection molding assembly is subjected to grooving treatment, the third outer groove and the second outer groove are penetrated by a lathe, the metal ring is lathed into three coaxial contact elements, the step two of the metal ring corresponds to the first contact element, the step three corresponds to the second contact element and the step four corresponds to the third contact element, the first inner groove, the second inner groove and the third inner groove are respectively positioned at the middle sections of the inner walls of the first contact element, the second contact element and the third contact element, and the first contact element, the second contact element and the third contact element are electrically insulated and isolated.
In a preferred embodiment of the invention, the diameter of the bottom of the first inner groove minus the diameter of the bottom of the second inner groove is equal to the diameter of the bottom of the second inner groove minus the diameter of the bottom of the third inner groove; the first spring coil, the second spring coil and the third spring coil are respectively installed in the corresponding first inner groove, the second inner groove and the third inner groove.
The invention solves the defects existing in the background technology, and has the beneficial effects that:
the invention provides a multi-core coaxial injection molding electric connector socket, which solves the technical problems of coaxial rotation and unstable multi-core coaxial transmission of an electric connector in the prior art.
The coaxial injection molding has the characteristic of multi-core and coaxial structure, the inner grooves and the spring coils of different internal contact electric conductors are distributed in a stepped manner, and the radial diameter of the socket is reduced; the drum spring and coil design enables the socket to be rotated.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic side view of the overall structure of the present invention.
Fig. 2 is a general structural schematic diagram of the present invention.
FIG. 3 is a schematic side view of the injection molded part of the present invention.
FIG. 4 is a schematic structural view of an injection molded part of the present invention.
FIG. 5 is a schematic view of the socket assembly of the present invention
Fig. 6 is a schematic view of the weld joint configuration of the present invention.
Fig. 7 is a side view of the metal ring of the present invention.
Fig. 8 is a schematic view of the metal ring structure of the present invention.
Fig. 9 is a schematic diagram of a pin configuration of the present invention.
Figure 10 is a schematic diagram of the dielectric body structure of the present invention.
Fig. 11 is a schematic view of the structure of the inner insertion needle of the present invention.
Fig. 12 is a schematic view of the nut structure of the present invention.
Fig. 13 is a schematic view of the drum spring structure of the present invention.
Fig. 14 is a schematic diagram of the construction of the coil of the present invention.
Wherein, in the figure: 1-inner pin, 2-drum spring, 3-metal ring, 4-pin one, 5-pin two, 6-pin three, 7-dielectric body one, 8-dielectric body two, 9-dielectric body three, 10-spring coil one, 11-spring coil two, 12-spring coil three, 13-nut, 14-glue-stacking groove, 301-step one, 302-step two, 303-step three, 304-step four, 305-welding groove one, 306-welding groove two, 307-welding groove three, 308-outer groove one, 309-outer groove two, 310-outer groove three, 311-connecting piece one, 312-connecting piece two, 313-connecting piece three, 321-welding groove three, 322-inner groove two, 323-inner groove one.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
As shown in fig. 1 to 14, the present embodiment discloses a coaxial injection-molded electrical connector socket: the spring comprises an inner pin 1, a drum spring 2, a pin I4, a pin II 5, a pin III 6, a medium body I7, a medium body II 8, a medium body III 9, a spring coil I10, a spring coil II 11, a spring coil III 12, a nut 13 and a metal ring 3; the inner contact pin 1 and the drum spring 2 form an inner contact pin assembly, wherein the inner contact pin 1 is fixed with a nut 13 through threads; the first contact pin 4 and the first medium body 7 form a first contact pin assembly; the second contact pin 5 and the second medium body 8 form a second contact pin assembly; the contact pin III 6 and the medium body III 9 form a contact pin III-shaped piece; the pin first assembly, the pin second assembly and the pin third assembly are respectively welded with a first welding groove 305, a second welding groove 306 and a third welding groove 307 of the metal ring 3 correspondingly to form a welding joint; the welding joint and the nut 13 are subjected to peek injection molding together to form an injection molding part; the socket assembly is formed by machining an injection molding assembly, wherein the inner wall of the socket assembly is machined into a stepped structure, the inner step number is 3, an inner groove is formed in the inner step surface and comprises a first inner groove 323, a second inner groove 322 and a third inner groove 321, and the first inner groove 323, the second inner groove 322 and the third inner groove 321 are isolated by peek injection molding; the inner inserting needle assembly is arranged at the thread position inside the socket assembly, the first spring coil 10 is arranged at the first inner groove 323 of the socket assembly, the second spring coil 11 is arranged at the second inner groove 322 of the socket assembly, and the third spring coil 12 is arranged at the third inner groove 321 of the socket assembly.
As shown in fig. 7 and 8, the metal ring 3 is designed to have a smooth through hole inside and a chamfer on the top; the outer surface of the metal ring 3 is provided with steps and outer grooves, the number of the steps is 4, and the number of the outer grooves is 3; the outer groove comprises a first outer groove 308, a second outer groove 309 and a third outer groove 310, the width of the first outer groove 308 is larger than that of the second outer groove 309 and that of the third outer groove 310, the width of the second outer groove 309 is equal to that of the third outer groove 310, and the diameter of the bottom of the second outer groove 309 is larger than that of the bottom of the third outer groove 310; the diameter of the first step 301 is the largest, the first step 301 is located at the top end of the metal ring 3 and used for injection molding positioning, the diameter of the second step 302 minus the diameter of the third step 303 is equal to the diameter of the third step 303 minus the diameter of the fourth step 304, the axial lengths of the second step 302, the third step 303 and the fourth step 304 are equal, the outer end face of the second step 302 is provided with a third welding groove 307, the second welding groove 306 on the outer end face of the third step 303 and the first welding groove 305 on the outer end face of the fourth step 304, and the third welding groove 307, the second welding groove 306 and the first welding groove 305 are uniformly distributed in a 120-degree projection mode towards the top end of the metal; knurling is arranged on the surfaces of the second step 302, the third step 203 and the fourth step 304.
Specifically, the structure of the first outer groove 308, the second outer groove 309 and the third outer groove 310 arranged on the metal ring 3 facilitates the post-injection molding of the weld joint piece and the nut 13 to form an injection molding assembly, and the inner wall of the injection molding assembly is machined to form a socket assembly. More specifically, grooving processing is conveniently carried out on the inner wall of the injection molding assembly, the outer groove III 310 and the outer groove II 309 are lathed through, the metal ring 3 is lathed into three coaxial contact pieces, the step II 302 of the metal ring 3 corresponds to the contact piece I311, the step III 303 corresponds to the contact piece II 312, and the step IV 304 corresponds to the contact piece III 313, the inner groove I323, the inner groove II 322 and the inner groove III 321 are respectively positioned at the middle sections of the inner walls of the contact piece I311, the contact piece II 312 and the contact piece III 313, and the electrical insulation isolation of the contact piece I311 and the contact piece II 312, and the contact piece II 312 and the contact piece III 313 is realized; the diameter of the bottom of the first inner groove 323 minus the diameter of the bottom of the second inner groove 322 is equal to the diameter of the bottom of the second inner groove 322 minus the diameter of the bottom of the third inner groove 321; the first spring coil 10, the second spring coil 11 and the third spring coil 12 are respectively installed in the corresponding first inner groove 323, the second inner groove 322 and the third inner groove 321.
As shown in fig. 5: the injection molding assembly is formed by injection molding of a welding joint and a nut 13, a peek injection molding material wraps a second step 302, a third step 303 and a fourth step 304 outside the metal ring 3 and fills an external groove, the external groove comprises a first external groove 308, a second external groove 309 and a third external groove 310, the external peek is wrapped in a tubular shape, and the wrapping diameter of the external peek does not exceed the first step 301 of the metal ring 3; the inner diameter of the injection molding part is the same as that of the metal ring 3; the tail end of the injection molding assembly is provided with a glue piling groove 14, the bottom end of the glue piling groove 14 is flush with the outer side end surfaces of the first pin boss 4, the second pin boss 5 and the third pin boss 6, and the bottom end of the glue piling groove 14 is slightly lower than the end surface of the nut 13; the tail end face of the injection molding part is higher than the tail ends of the first contact pin 4, the second contact pin 5 and the third contact pin 6.
As shown in fig. 6, the welding joint is to weld the head ends of the first pin joint part, the second pin joint part and the third pin joint part in a third welding groove 307 on the end face of the second step 302, a second welding groove 306 on the end face of the third step 303 and a first welding groove 305 on the end face of the fourth step 304 outside the metal ring 3, respectively; the tail ends of the first pin assembly part, the second pin assembly part and the third pin assembly part are flush. Specifically, the pin assembly is composed of a pin and a medium body, wherein the pin comprises a pin I4, a pin II 5 and a pin III 6, and the medium body comprises a medium body I7, a medium body II 8 and a medium body III 9. The dielectric body is to protect the contact pin to receive the damage on the one hand, prevents contact of contact pin and becket 3 when on the other hand moulding plastics, realizes electrical insulation and keeps apart.
As shown in fig. 7 and 8, the non-welding sections of the first pin 4, the second pin 5 and the third pin 6 are provided with bosses, the third pin 6, the second pin 5 and the first pin 4 are decreased in an equidistant manner, the length of the first pin 4 minus the second pin 5 is equal to the sum of the width of the four outer steps 304 of the metal ring 3 and the width of the three outer grooves 310, and so on.
As shown in fig. 9, the first dielectric body 7, the second dielectric body 8 and the third dielectric body 9 are all designed in a tubular shape, the inner diameter of the dielectric body is equal to the outer diameter of the contact pin, and the outer diameter is equal to the diameter of the boss of the contact pin; the third dielectric body 9, the second dielectric body 8 and the first dielectric body 7 are gradually decreased at equal intervals, and the gradually decreased length is the same as the gradually decreased length of the third pin 6, the second pin 5 and the first pin 4.
As shown in fig. 10, the top end of the inner inserting needle 1 is provided with a groove, and the diameter of the groove bottom of the groove is the same as the inner diameter of the drum spring 2; the middle part of the inner contact pin 1 is provided with a step; the middle rear section of the inner contact pin 1 is provided with threads; the tail end of the inner contact pin 1 is provided with a flat milling step for welding a lead.
As shown in fig. 11, two grooves are formed in the outer portion of the nut 13, the two grooves are symmetrically designed, and the length of the nut is equal to the distance from the step end face of the inner pin 1 to the tail end of the thread formed in the middle and rear section of the inner pin 1.
Specifically, as shown in fig. 13 and 14, the first coil 10, the second coil 11, the third coil 12 and the drum spring 2 of the present embodiment are formed by punching and curling spring leaves, and the spring leaves of the first coil 10, the second coil 11 and the third coil 12 are all protruded inwards; the reed of the drum spring 2 protrudes outward. The first spring coil 10, the second spring coil 11, the third spring coil 12 and the drum spring 2 are all in a symmetrical structure.
The multi-core coaxial injection molding electric connector socket is provided with four contact elements, three contact elements are designed in a coaxial step mode, one contact element is positioned on the axes of the other three contact elements, the contact elements are isolated through insulating peek injection molding, the electric connector socket is contacted with a plug at a butt joint end by a spring coil I10, a spring coil II 11, a spring coil III 12 and a drum spring 2, the inner wall of an injection molding assembly is subjected to grooving processing, an outer groove III 310 and an outer groove II 309 are penetrated by a lathe, and a metal ring 3 is lathed into three coaxial contact elements I311, contact elements II 312 and contact elements III 313; the first contact element 311 is used for connecting the first spring coil 310 with the third contact pin 6, the second contact element 312 is used for connecting the second spring coil 11 with the second contact pin 5, the third contact element 313 is used for connecting the third spring coil 12 with the first contact pin 4, and three contact elements formed by the inserted pin assembly and the injection molding assembly are coaxially designed, so that rotation among other butt joint products can be realized; the step surface of the metal ring 3 adopts a knurling design to ensure a better sealing effect; the electric connector is formed by injection molding of peek, and has the capabilities of high pressure resistance and high temperature resistance.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a coaxial electric connector socket of moulding plastics of multicore, closes the piece including the socket, and the socket closes the piece and closes a piece machining by moulding plastics and form, it closes the piece through welding behind fastener and the nut combination by peek injection moulding, its characterized in that to mould plastics: the welding joint piece comprises an inner inserting needle joint piece and a welding joint piece sleeved outside the inner inserting needle joint piece in a surrounding mode, and the inner inserting needle joint piece is combined and fixed with the welding joint piece through a nut through threads; the welding joint piece comprises a plurality of contact pin joint pieces and a plurality of welding grooves arranged on the periphery of the metal ring, and the corresponding contact pin joint pieces are arranged in the welding grooves; a plurality of spring coils are embedded and sleeved in the metal ring; the inner wall of the injection molding part is processed into a plurality of step structures, the middle part of the step surface in the injection molding part is provided with an inner groove, and the inner groove is internally provided with the corresponding spring coil;
the outer surface of the metal ring is provided with a step and an outer groove, the step comprises a first step, a second step, a third step and a fourth step, the first step is used for injection molding positioning and is located at the top end of the metal ring, the diameter of the first step is the largest, the diameter of the second step minus the diameter of the third step is equal to the diameter of the third step minus the diameter of the fourth step, the axial lengths of the second step, the third step and the fourth step are equal, and the outer end faces of the second step, the third step and the fourth step are respectively provided with one welding groove.
2. The multiple conductor coaxial injection molded electrical connector receptacle of claim 1, wherein: the contact pin assembly comprises a contact pin and a medium body sleeved on the contact pin; the inner inserting needle assembly comprises an inner inserting needle arranged in the welding assembly and a drum spring sleeved outside the inner inserting needle.
3. The multiple conductor coaxial injection molded electrical connector receptacle of claim 1, wherein: the interior of the metal ring adopts a smooth through hole type design, and the top end of an inner hole is provided with a chamfer;
the welding grooves are uniformly distributed in a 120-degree mode in a projection mode towards the top end of the metal ring; knurling is arranged on the surfaces of the second step, the third step and the fourth step.
4. The multiple conductor coaxial injection molded electrical connector receptacle of claim 1, wherein: the outer groove comprises a first outer groove, a second outer groove and a third outer groove, the width of the first outer groove is larger than that of the second outer groove and that of the third outer groove, the width of the second outer groove is equal to that of the third outer groove, and the diameter of the bottom of the second outer groove is larger than that of the bottom of the third outer groove.
5. The multiple conductor coaxial injection molded electrical connector receptacle of claim 2, wherein: the front section of the inner contact pin is provided with a groove for mounting a drum spring; the middle part of the inner contact pin is provided with a contact pin boss, the tail end of the inner contact pin is provided with a milling flat step, a thread is arranged from the milling flat step to the end face of the contact pin boss, and the tail end of the inner contact pin is fixedly butted with a nut arranged in the welding joint piece through the thread.
6. The multiple conductor coaxial injection molded electrical connector receptacle of claim 2, wherein: the contact pins comprise a first contact pin, a second contact pin and a third contact pin, the lengths of the third contact pin, the second contact pin and the first contact pin are in an equidistance decreasing trend, and the length of subtracting the length of the second contact pin from the length of the first contact pin is equal to the length of subtracting the length of the third contact pin from the length of the second contact pin; the first contact pin, the second contact pin and the third contact pin are provided with bosses at the same distance from the tail end.
7. The multiple conductor coaxial injection molded electrical connector receptacle of claim 6, wherein: the dielectric body comprises a dielectric body I sleeved outside the contact pin I, a dielectric body II sleeved outside the contact pin II and a dielectric body III sleeved outside the contact pin III, the lengths of the dielectric body III, the dielectric body II and the dielectric body I are in an equidistance reduction trend, and the length of the dielectric body I minus the length of the dielectric body II is equal to the length of the dielectric body II minus the length of the dielectric body III; the medium body I, the medium body II and the medium body III are designed in a tubular shape, the inner diameters of the medium body I, the medium body II and the medium body III are respectively equal to the needle diameters of the contact pin I, the contact pin II and the contact pin III, and the outer diameters of the medium body I, the medium body II and the medium body III are respectively the same as the diameters of the contact pin I, the contact pin II and the contact pin III bosses; the decreasing lengths of the first dielectric body, the second dielectric body and the third dielectric body are the same as the decreasing lengths of the first contact pin, the second contact pin and the third contact pin.
8. The multiple conductor coaxial injection molded electrical connector receptacle of claim 7, wherein: the nut is provided with double grooves in a symmetrical shape outside, and the double grooves are used for filling the peek injection molding; the injection molding assembly is formed by fixing a nut and a welding assembly through peek injection molding under high temperature and high pressure, the nut and the welding assembly are bonded and injected into a whole, a glue stacking groove is formed in the tail end of the injection molding assembly, the bottom end of the glue stacking groove is flush with boss surfaces of the first contact pin, the second contact pin and the third contact pin, and the bottom end of the glue stacking groove is slightly lower than the end surface of the nut; the tail end face of the injection molding part is higher than the tail ends of the first contact pin, the second contact pin and the third contact pin.
9. The multiple conductor coaxial injection molded electrical connector receptacle of claim 1, wherein: the inner wall of the injection molding assembly is subjected to groove turning treatment, the outer groove III and the outer groove II are turned through, the metal ring is turned into three coaxial contact elements, the step II of the metal ring corresponds to the contact element I, the step III corresponds to the contact element II, and the step IV corresponds to the contact element III, the inner groove I, the inner groove II and the inner groove III are respectively positioned at the middle sections of the inner walls of the contact element I, the contact element II and the contact element III, and the electrical insulation isolation of the contact element I, the contact element II and the contact element III is realized.
10. The multiple conductor coaxial injection molded electrical connector receptacle of claim 9, wherein: the diameter of the bottom of the inner groove I minus the diameter of the bottom of the inner groove II is equal to the diameter of the bottom of the inner groove II minus the diameter of the bottom of the inner groove III; the first spring coil, the second spring coil and the third spring coil are respectively installed in the corresponding first inner groove, the second inner groove and the third inner groove.
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