CN110571576B - Connector and ferrule assembly thereof - Google Patents

Connector and ferrule assembly thereof Download PDF

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Publication number
CN110571576B
CN110571576B CN201910810537.7A CN201910810537A CN110571576B CN 110571576 B CN110571576 B CN 110571576B CN 201910810537 A CN201910810537 A CN 201910810537A CN 110571576 B CN110571576 B CN 110571576B
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China
Prior art keywords
hole
end cover
sealing plug
metal end
terminal
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CN201910810537.7A
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Chinese (zh)
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CN110571576A (en
Inventor
王晓辉
郭辉
王敬波
李永棒
李刘生
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China Aviation Optical Electrical Technology Co Ltd
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China Aviation Optical Electrical Technology Co Ltd
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Priority to CN201910810537.7A priority Critical patent/CN110571576B/en
Publication of CN110571576A publication Critical patent/CN110571576A/en
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Publication of CN110571576B publication Critical patent/CN110571576B/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
    • H01R13/40—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
    • 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
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5202—Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
    • 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
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

The invention relates to a connector and a ferrule assembly thereof, wherein the ferrule assembly comprises an insulator, an insulating pressing plate and a metal end cover which are sequentially arranged along the front and back directions; the insulating pressing plate is fixedly arranged on the front side surface of the metal end cover to form a mounting base body; the insulator is fixedly arranged on the mounting base body; the front power terminal hole and the rear power terminal hole are correspondingly matched and are assembled with a power terminal in a limiting mode, the front signal terminal hole and the rear signal terminal hole are correspondingly matched and are assembled with a signal terminal in a limiting mode, the front grounding terminal hole and the rear grounding terminal hole are correspondingly matched and are assembled with a grounding terminal in a limiting mode, and the grounding terminal is in conductive connection with the metal end cover; the metal end cover is provided with a power cable electrically connected with the power terminal and a corresponding wire passing hole for passing a signal cable in signal connection with the signal terminal. The insulating pressing plate, the insulator and the metal end cover can be relatively fixed after assembly, and the insulator, the insulating pressing plate and the metal end cover can be fixedly assembled without a rear cover.

Description

Connector and ferrule assembly thereof
Technical Field
The invention relates to a connector and a ferrule assembly thereof.
Background
The battery replacing connector comprises a plug connector arranged at the end of the battery pack and a socket connector arranged at the end of the body of the electric automobile, and when the plug connector and the socket connector are plugged oppositely, the plug terminal and the socket terminal are plugged together to realize electric connection.
The socket connector includes a metal cylinder, an insulating pressing plate, an insulator, and a pressing cover. In the prior art, an insulating pressing plate and an insulator are sequentially assembled in a metal cylinder, and then a pressing cover and the metal cylinder are matched through a fastening piece to be pressed on the insulator, so that the assembly of the socket connector is realized. However, the insulating pressing plate and the insulator are not fixed before the gland is fastened, the mounting positions of the insulating pressing plate and the insulator are not easy to determine before the pressing plate is pressed, and the relative positions of the metal cylinder, the insulating pressing plate and the insulator need to be readjusted when the pressing plate is pressed, so that the labor intensity of workers is high.
Disclosure of Invention
The invention aims to provide a connector, which aims to solve the technical problems that an insulating pressing plate and an insulator are not fixed before a gland is fastened, and the relative positions of a metal cylinder, the insulating pressing plate and the insulator need to be readjusted when the pressing plate is pressed; the invention also aims to provide a ferrule assembly to solve the technical problems that the insulating pressure plate and the insulator are not fixed before the gland is fastened and the relative positions of the metal cylinder, the insulating pressure plate and the insulator need to be readjusted when the pressure plate is pressed and installed in the connector in the prior art.
In order to achieve the purpose, the technical scheme of the ferrule assembly is as follows:
the ferrule assembly defines the insertion end of the ferrule assembly as the front end and comprises an insulator, an insulating pressing plate and a metal end cover which are sequentially arranged along the front-back direction; the insulating pressing plate is fixedly arranged on the front side surface of the metal end cover to form a mounting base body; the insulator is fixedly arranged on the mounting base body; the insulating pressing plate is provided with a rear power terminal hole, a rear signal terminal hole and a rear grounding terminal hole; the insulator is provided with a front power terminal hole, a front signal terminal hole and a front grounding terminal hole; the front power terminal hole and the rear power terminal hole are correspondingly matched and are assembled with a power terminal in a limiting mode, the front signal terminal hole and the rear signal terminal hole are correspondingly matched and are assembled with a signal terminal in a limiting mode, the front grounding terminal hole and the rear grounding terminal hole are correspondingly matched and are assembled with a grounding terminal in a limiting mode, and the grounding terminal is in conductive connection with the metal end cover; the metal end cover is provided with a power cable electrically connected with the power terminal and a corresponding wire passing hole for passing a signal cable in signal connection with the signal terminal.
The beneficial effects are that: firstly, an insulating pressing plate is fixedly arranged on a metal end cover to form an installation base body, then an insulator is fixedly arranged on the installation base body, so that the insulating pressing plate, the insulator and the metal end cover can be relatively fixed after assembly, and the fixed assembly of the insulator, the insulating pressing plate and the metal end cover can be realized without a rear cover; meanwhile, the installation base body formed by the insulating pressing plate and the metal end cover can be used as an independent module for subsequent assembly, all parts do not need to be assembled at the same assembly point, assembly is flexible, and assembly work of the connector on a production line is facilitated.
The grounding terminal is provided with a penetrating part which penetrates out of the rear grounding terminal hole and is in conductive connection with the metal end cover, the penetrating part is fixedly connected with the metal end cover, and a press-fitting part which is used for press-fitting the insulating pressing plate on the metal end cover is arranged in front of the penetrating part on the grounding terminal. The insulating pressing plate is fixedly assembled on the metal end cover through the grounding terminal, so that the effects of fixed connection and electromagnetic shielding and grounding protection are achieved.
The part of wearing out includes the external screw thread section, is equipped with the threaded connection hole on the metal end cover, the part of wearing out passes through external screw thread section and threaded connection hole screw-thread fit fixed connection on the metal end cover. Fixed connection of wearing dress portion and metal end cover is realized through helicitic texture, and the structure is comparatively simple, the dismouting in the later stage of being convenient for.
The rear side of the metal end cover corresponding to the rear power terminal hole is integrally provided with a straight cylinder extending backwards, the rear end of the straight cylinder is fixedly assembled with a straight cylinder cover plate in a detachable mode, a power cable penetrating cylinder for penetrating a power cable is integrally arranged on the cylinder wall of the straight cylinder, the power cable penetrating cylinder extends from inside to outside along the radial direction of the metal end cover, and a shielding sleeve assembly is arranged in the power cable penetrating cylinder so as to be in conductive communication with a grounding terminal through the metal end cover and shield external electromagnetic interference. The power cable penetrating cylinder extends from inside to outside along the radial direction of the metal end cover, so that the power cable in the power cable penetrating cylinder is conveniently led to electric equipment of the vehicle body; meanwhile, the rear end of the straight cylinder is provided with a detachable straight cylinder cover plate, so that the copper nose of the power cable is fixedly connected with the power terminal.
Be equipped with the barb structure on the insulating clamp plate, the insulator passes through barb structure joint on insulating clamp plate. The insulator is convenient to fix and assemble on the insulating pressing plate, and the barb structure can be integrally formed with the insulator, so that the processing of the barb structure is convenient.
The metal end cover is provided with a wire passing hole for passing a signal cable connected with a signal terminal signal, the wire passing hole is a sealing plug hole, the sealing plug holes correspond to the rear signal terminal holes one by one, and each sealing plug hole is internally provided with a sealing plug; the ferrule assembly further comprises an end cover plate fixedly arranged on the rear side of the metal end cover, positioning protrusions matched with the corresponding sealing plug holes in a positioning mode are convexly arranged on the front side of the end cover plate, the end cover plate extends into the corresponding sealing plug holes through the positioning protrusions to limit the sealing plugs in the corresponding sealing plug holes in the front-back direction, cable holes used for being corresponding to the corresponding sealing plug holes and used for penetrating and installing signal cables are formed in the end cover plate, and the cable holes are communicated with the positioning protrusions from the rear side of the end cover plate to the front side. The end cover plate can prevent the sealing plug from dropping out of the sealing plug hole, so that the sealing performance of the connector is ensured; meanwhile, the positioning protrusions are arranged on the end cover plate, so that the end cover plate can be conveniently fixed and assembled on the metal end cover, and the cable hole in the end cover plate can be correspondingly communicated with the corresponding sealing plug hole, so that the cable is prevented from being bent and deformed.
Each sealing plug hole is provided with a positioning matching hole section for the positioning protrusion to extend into and a sealing plug mounting hole section for being matched with the sealing plug, the diameter of the positioning matching hole section is larger than that of the sealing plug mounting hole section, and the positioning matching hole section and the sealing plug mounting hole section are in transitional connection through a conical hole section. The positioning fit hole section can ensure that the sealing plug smoothly enters the sealing plug hole, and the conical hole section enables the sealing plug to be pressed in the forward moving process, so that the sealing plug is assembled in the sealing plug mounting hole section of the sealing plug hole in an interference fit mode, and the sealing performance is ensured.
The end cover plate is an insulating cover plate, a fixing protrusion is arranged on the rear side face of the metal end cover, the fixing protrusion is provided with a protrusion threaded hole matched with the threaded fastener in a threaded mode, a penetrating hole corresponding to the fixing protrusion and used for penetrating the fixing protrusion is formed in the end cover plate, and the height of the fixing protrusion is smaller than the thickness of the end cover plate. The end cover plate is prevented from losing efficacy when the threaded fastener is screwed down.
The diameter of the rear end of the rear signal terminal hole is smaller than the diameter of the front end of the sealing plug hole. The hole edge of the rear signal terminal hole is made to form a stop surface to prevent the sealing plug in the sealing plug hole from moving forward.
In order to achieve the purpose, the technical scheme of the connector is as follows:
the connector comprises a shell assembly, wherein a ferrule assembly is fixedly assembled in the shell assembly, the inserting end of the ferrule assembly is defined as the front end, and the ferrule assembly comprises an insulator, an insulating pressing plate and a metal end cover which are sequentially arranged along the front-back direction; the insulating pressing plate is fixedly arranged on the front side surface of the metal end cover to form a mounting base body; the insulator is fixedly arranged on the mounting base body; the insulating pressing plate is provided with a rear power terminal hole, a rear signal terminal hole and a rear grounding terminal hole; the insulator is provided with a front power terminal hole, a front signal terminal hole and a front grounding terminal hole; the front power terminal hole and the rear power terminal hole are correspondingly matched and are assembled with a power terminal in a limiting mode, the front signal terminal hole and the rear signal terminal hole are correspondingly matched and are assembled with a signal terminal in a limiting mode, the front grounding terminal hole and the rear grounding terminal hole are correspondingly matched and are assembled with a grounding terminal in a limiting mode, and the grounding terminal is in conductive connection with the metal end cover; the metal end cover is provided with a power cable electrically connected with the power terminal and a corresponding wire passing hole for passing a signal cable in signal connection with the signal terminal.
The beneficial effects are that: firstly, an insulating pressing plate is fixedly arranged on a metal end cover to form an installation base body, then an insulator is fixedly arranged on the installation base body, so that the insulating pressing plate, the insulator and the metal end cover can be relatively fixed after assembly, and the fixed assembly of the insulator, the insulating pressing plate and the metal end cover can be realized without a rear cover; meanwhile, the installation base body formed by the insulating pressing plate and the metal end cover can be used as an independent module for subsequent assembly, all parts do not need to be assembled at the same assembly point, assembly is flexible, and assembly work of the connector on a production line is facilitated.
The grounding terminal is provided with a penetrating part which penetrates out of the rear grounding terminal hole and is in conductive connection with the metal end cover, the penetrating part is fixedly connected with the metal end cover, and a press-fitting part which is used for press-fitting the insulating pressing plate on the metal end cover is arranged in front of the penetrating part on the grounding terminal. The insulating pressing plate is fixedly assembled on the metal end cover through the grounding terminal, so that the effects of fixed connection and electromagnetic shielding and grounding protection are achieved.
The part of wearing out includes the external screw thread section, is equipped with the threaded connection hole on the metal end cover, the part of wearing out passes through external screw thread section and threaded connection hole screw-thread fit fixed connection on the metal end cover. Fixed connection of wearing dress portion and metal end cover is realized through helicitic texture, and the structure is comparatively simple, the dismouting in the later stage of being convenient for.
The rear side of the metal end cover corresponding to the rear power terminal hole is integrally provided with a straight cylinder extending backwards, the rear end of the straight cylinder is fixedly assembled with a straight cylinder cover plate in a detachable mode, a power cable penetrating cylinder for penetrating a power cable is integrally arranged on the cylinder wall of the straight cylinder, the power cable penetrating cylinder extends from inside to outside along the radial direction of the metal end cover, and a shielding sleeve assembly is arranged in the power cable penetrating cylinder so as to be in conductive communication with a grounding terminal through the metal end cover and shield external electromagnetic interference. The power cable penetrating cylinder extends from inside to outside along the radial direction of the metal end cover, so that the power cable in the power cable penetrating cylinder is conveniently led to electric equipment of the vehicle body; meanwhile, the rear end of the straight cylinder is provided with a detachable straight cylinder cover plate, so that the copper nose of the power cable is fixedly connected with the power terminal.
Be equipped with the barb structure on the insulating clamp plate, the insulator passes through barb structure joint on insulating clamp plate. The insulator is convenient to fix and assemble on the insulating pressing plate, and the barb structure can be integrally formed with the insulator, so that the processing of the barb structure is convenient.
The metal end cover is provided with a wire passing hole for passing a signal cable connected with a signal terminal signal, the wire passing hole is a sealing plug hole, the sealing plug holes correspond to the rear signal terminal holes one by one, and each sealing plug hole is internally provided with a sealing plug; the ferrule assembly further comprises an end cover plate fixedly arranged on the rear side of the metal end cover, positioning protrusions matched with the corresponding sealing plug holes in a positioning mode are convexly arranged on the front side of the end cover plate, the end cover plate extends into the corresponding sealing plug holes through the positioning protrusions to limit the sealing plugs in the corresponding sealing plug holes in the front-back direction, cable holes used for being corresponding to the corresponding sealing plug holes and used for penetrating and installing signal cables are formed in the end cover plate, and the cable holes are communicated with the positioning protrusions from the rear side of the end cover plate to the front side. The end cover plate can prevent the sealing plug from dropping out of the sealing plug hole, so that the sealing performance of the connector is ensured; meanwhile, the positioning protrusions are arranged on the end cover plate, so that the end cover plate can be conveniently fixed and assembled on the metal end cover, and the cable hole in the end cover plate can be correspondingly communicated with the corresponding sealing plug hole, so that the cable is prevented from being bent and deformed.
Each sealing plug hole is provided with a positioning matching hole section for the positioning protrusion to extend into and a sealing plug mounting hole section for being matched with the sealing plug, the diameter of the positioning matching hole section is larger than that of the sealing plug mounting hole section, and the positioning matching hole section and the sealing plug mounting hole section are in transitional connection through a conical hole section. The positioning fit hole section can ensure that the sealing plug smoothly enters the sealing plug hole, and the conical hole section enables the sealing plug to be pressed in the forward moving process, so that the sealing plug is assembled in the sealing plug mounting hole section of the sealing plug hole in an interference fit mode, and the sealing performance is ensured.
The end cover plate is an insulating cover plate, a fixing protrusion is arranged on the rear side face of the metal end cover, the fixing protrusion is provided with a protrusion threaded hole matched with the threaded fastener in a threaded mode, a penetrating hole corresponding to the fixing protrusion and used for penetrating the fixing protrusion is formed in the end cover plate, and the height of the fixing protrusion is smaller than the thickness of the end cover plate. The end cover plate is prevented from losing efficacy when the threaded fastener is screwed down.
The diameter of the rear end of the rear signal terminal hole is smaller than the diameter of the front end of the sealing plug hole. The hole edge of the rear signal terminal hole is made to form a stop surface to prevent the sealing plug in the sealing plug hole from moving forward.
Drawings
FIG. 1 is a schematic view of the construction of the connector of the present invention;
FIG. 2 is a schematic view of another aspect of the connector of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view at C of FIG. 4;
FIG. 6 is a sectional view taken along line B-B of FIG. 3;
FIG. 7 is an exploded view of the connector of the present invention;
FIG. 8 is an exploded view of the ferrule assembly of the present invention;
FIG. 9 is a schematic structural view of the insulating platen and the metal end cap of the present invention before they are fixedly assembled;
FIG. 10 is a left side view of the plug assembly of FIG. 8 after assembly;
FIG. 11 is a cross-sectional view taken along line D-D of FIG. 10;
in the figure: 101-a housing assembly; 102-a ferrule assembly; 11-a stationary housing; 12-a floating housing; 13-guide sleeve; 14-a floating assembly; 21-a first sealing ring; 22-metal end caps; 221-threaded connection holes; 222-locating the mating hole section; 223-a tapered bore section; 224-a sealing plug mounting hole section; 23-an insulator; 231-front signal terminal holes; 232-front power terminal holes; 233-front ground terminal holes; 24-an insulating platen; 241-rear signal terminal holes; 242 — rear power terminal holes; 243-rear ground terminal aperture; 25-fixing the projection; 26-mounting holes; 27-a first screw; 28-end cover plate; 281-cable hole; 282-positioning protrusions; 29-a sealing plug; 30-power cable penetration barrel; 301-an insulating sleeve; 302-an outer shielding sleeve; 303-inner shielding sleeve; 304-a retaining ring; 305-a wire sealing body; 306-tail cap; 31-straight cylinder; 32-straight cylinder cover plate; 33-signal terminals; 34-a ground terminal; 341-external thread section; 342-a press-fit portion; 35-power terminals; 36-a second screw; 37-third screw; 38-a second seal ring; 39-platen gap; a 40-barb configuration.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the embodiment of the connector of the present invention, as shown in fig. 1 to 3, the connector includes a housing assembly 101, a ferrule assembly 102 is fixedly assembled in the housing assembly 101, the housing assembly 101 includes a fixed housing 11 and a floating housing 12, the fixed housing 11 is used for fixedly mounting the connector on a mounting panel, and the floating housing 12 is floatingly assembled in the fixed housing 11 through a floating assembly 14, so as to ensure normal plugging and reliability of the connector during plugging. In other embodiments, the housing assembly may not float, and the connector may require multiple adjustments to properly mate when plugged.
Specifically, the floating assembly 14 comprises a guide post, one end of the guide post is assembled on the fixed shell 11 in a limiting mode, the other end of the guide post is assembled on the floating shell 12 in a limiting mode, a pressure spring is sleeved between the fixed shell 11 and the floating shell on the guide post, and the pressure spring is compressed to achieve floating in the fixed shell 11 when the floating shell 12 is stressed.
In this embodiment, the floating housing 12 is provided with a guide sleeve 13 for guiding and matching with a guide pin on the adapter connector, so as to facilitate the insertion of the connector. In other embodiments, guide pins may be provided on the floating housing and guide sleeves on the mating connector.
As shown in fig. 8 and 9, the insulator 23 is provided with a front signal terminal hole 231, a front power terminal hole 232, and a front ground terminal hole 233; the insulating pressing plate 24 is provided with a rear signal terminal hole 241, a rear power terminal hole 242 and a rear ground terminal hole 243; the front signal terminal hole 231 and the rear signal terminal hole 241 are correspondingly fitted and limit-fitted with the signal terminal 33, the front power terminal hole 232 and the rear power terminal hole 242 are correspondingly fitted and limit-fitted with the power terminal 35, and the front ground terminal hole 233 and the rear ground terminal hole 243 are correspondingly fitted and limit-fitted with the ground terminal 34. As shown in fig. 4 and 6, the metal end cap 22 is provided with a power cable through hole for passing a power cable electrically connected to the power terminal 35, and the metal end cap 22 is further provided with a sealing plug hole for passing a signal cable connected to the signal terminal 33.
As shown in fig. 7 and 8, the plugging end of the ferrule assembly 102 is defined as a front end, and the ferrule assembly 102 includes an insulator 23, an insulating presser 24, and a metal end cap 22, which are arranged in this order in the front-rear direction. As shown in fig. 1 and 6, the ferrule assembly 102 is fixedly assembled on the floating housing 12 through the metal end cap 22, and a first sealing ring 21 is disposed between the metal end cap 22 and the floating housing 12 to ensure the sealing performance between the ferrule assembly 102 and the floating housing 12.
As shown in fig. 4 and 9, a concave-convex insertion structure is provided between the metal end cap 22 and the insulating pressing plate 24, a threaded connection hole 221 is provided on the metal end cap 22, the ground terminal 34 has a press-fitting portion 342 for press-fitting the insulating pressing plate 24 onto the metal end cap 22, a penetrating portion penetrating through the rear power terminal hole is provided behind the press-fitting portion 342 of the ground terminal 22, the penetrating portion includes an external threaded section 341, the external threaded section 341 is in threaded connection with the threaded connection hole 221 to achieve electrically conductive and fixed connection between the ground terminal 34 and the metal end cap 22, and the insulating pressing plate 24 is fixedly assembled on the metal end cap 22 through the press-fitting portion 342 to form an installation base body, and when the metal end cap 22 and the insulating pressing plate 24 are fixedly assembled, the concave-convex insertion structure positions the metal end cap 22 and the; the insulating pressing plate 24 is fixedly assembled on the metal end cover 22 through the grounding terminal 34, and the insulating pressing plate plays a role in both fixing connection and electromagnetic shielding and grounding protection. In other embodiments, the insulating pressing plate is fixedly assembled on the metal end cover through a barb structure; or the metal end cover is provided with a unthreaded hole, the penetrating part of the wiring terminal is a light column, and the light column is in interference fit with the unthreaded hole so as to fixedly assemble the insulating pressing plate on the metal end cover.
As shown in fig. 7 to 9, a straight cylinder 31 extending backward is integrally disposed on the rear side of the metal end cap 22 corresponding to the rear power terminal hole, the straight cylinder 31 constitutes a power cable through hole, a straight cylinder cover plate 32 is detachably and fixedly mounted at the rear end of the straight cylinder 31 through a third screw 37, and a second sealing ring 38 is disposed between the straight cylinder cover plate 32 and the straight cylinder 31 to ensure sealing performance.
The rear power terminal hole 242 is provided with a pressing plate notch 39, the straight barrel 31 is provided with an end cover notch at a position corresponding to the notch, the barrel wall of the straight barrel 31 is integrally provided with a power cable penetrating barrel 30 for penetrating a power cable, and the power cable penetrating barrel 30 is communicated with the rear power terminal hole 242 through the end cover notch and the pressing plate notch 39. The power cable penetrating cylinder 30 is arranged on one side of the metal shell 22, the power cable penetrating cylinder 30 extends from inside to outside along the radial direction of the metal end cover 22, a shielding sleeve assembly is arranged in the power cable penetrating cylinder 30 so as to be in conductive communication with the grounding terminal 34 through the metal end cover 22 to shield external electromagnetic interference, the power cable penetrating cylinder 30 extends from inside to outside along the radial direction of the metal end cover 22, and therefore the power cable in the power cable penetrating cylinder 30 can be conveniently led to electric equipment of a vehicle body; meanwhile, the rear end of the straight cylinder 31 is provided with a detachable straight cylinder cover plate 32, so that the copper nose of the power cable is fixedly connected with the power terminal. In other embodiments, a power cable penetrating cylinder is not arranged, the power cable penetrates in the straight cylinder, at the moment, the power cable needs to be bent to be led to electric equipment of a vehicle body, the cable is easily damaged, and normal use of the cable is affected.
As shown in fig. 6 and 8, the shielding sleeve assembly includes an insulating sleeve 301, an outer shielding sleeve 302, an inner shielding sleeve 303, a retainer ring 304, a wire sealing body 305, and a tail cover 306, which are sequentially arranged, the outer shielding sleeve 302 and the inner shielding sleeve 303 crimp the shielding layer of the power cable, and one end of the inner shielding sleeve 303 facing the retainer ring 304 is in conductive contact with the wall of the power cable penetrating barrel 30. Because the power cable penetrating cylinder 30, the straight cylinder 31 and the metal end cover 22 are integrally formed, the inner shielding sleeve 303 can be electrically conducted through a grounding terminal fixedly connected with the metal end cover 22 in a conductive manner, so that the electromagnetic shielding of the shielding sleeve assembly in the power cable penetrating cylinder 30 along with the power cable is realized.
As shown in fig. 6. The rear end of the power terminal 35 is provided with a threaded hole, a second screw 36 is connected to the threaded hole in a threaded manner, and the copper nose of the power cable inserted into the power cable insertion cylinder 30 is fixed to the rear end of the power terminal 35 through the second screw 36.
As shown in fig. 10 and 11, the insulation pressing plate 24 is provided with the barb structure 40, the insulator 23 is clamped on the insulation pressing plate 24 through the barb structure 40, the insulator 23 is conveniently and fixedly assembled on the insulation pressing plate 24, and the barb structure can be integrally formed with the insulation pressing plate 24, so that the barb structure can be conveniently processed. In other embodiments, the barb structure is disposed on the insulator; or the insulating cover plate is fixedly connected through a threaded fastener, a through hole is formed in the corresponding insulator, and a threaded hole is formed in the insulating cover plate. In other embodiments, the insulator may be fixedly mounted on the metal end cap.
As shown in fig. 4 and 7, the sealing plug holes correspond to the rear signal terminal holes 241 one to one, sealing plugs 29 are installed in each sealing plug hole, the ferrule assembly 102 further includes an end cover plate 28, the end cover plate 28 is fixedly arranged at the rear side of the metal end cover 22 through first screws 27 to limit the sealing plugs 29 in the corresponding sealing plug holes along the front-back direction, and meanwhile, the first screws 27 also fixedly assemble the metal end cover 22 on the floating shell 12, so that the fixing structure is reduced, and the connector structure is simplified. As shown in fig. 5, the front side of the end cover plate 28 is provided with positioning protrusions 282 which are matched with the corresponding sealing plug holes in a positioning manner, and the end cover plate 28 extends into the corresponding sealing plug holes through each positioning protrusion 282 to limit the sealing plugs 29 in the corresponding sealing plug holes in the front-back direction. The end cover plate 28 is provided with cable holes 281 corresponding to the corresponding sealing plug holes and used for penetrating and installing signal cables, each cable hole 281 is penetrated and extended to the positioning protrusion 282 from the rear side of the end cover plate 28 to the front, and the end cover plate 28 can prevent the sealing plug 29 from being separated from the sealing plug holes, so that the sealing performance of the connector is ensured; meanwhile, the positioning protrusion 282 is disposed on the end cover plate 28, so that the end cover plate 28 can be conveniently fixed and assembled on the metal end cover 22, and the cable hole 281 on the end cover plate 28 can be ensured to be correspondingly communicated with the corresponding sealing plug hole, thereby preventing the signal cable from bending and deforming. In other embodiments, an end cover plate is not arranged, and glue is directly filled in the sealing plug hole to fix the sealing plug in the sealing plug hole; or the metal end cover is provided with a wire sealing body hole, a wire sealing body is arranged in the wire sealing body hole, the wire sealing body is provided with a cable hole corresponding to the corresponding rear signal terminal hole, and the wire sealing body is fixedly assembled on the metal end cover through a tail cover. In other embodiments, the end cover plate may not have the positioning protrusion, and at this time, the position accuracy of the fixing hole on the end cover plate and the fixing hole on the metal end cover can only be improved, so as to ensure that the cable hole is aligned with the seal plug hole.
In this embodiment, each sealing plug hole has a positioning fit hole section 222 into which the positioning protrusion 282 extends, and has a sealing plug mounting hole section 224 for fitting with the sealing plug 29, the diameter of the positioning fit hole section 222 is greater than that of the sealing plug mounting hole section 224, and the positioning fit hole section 222 and the sealing plug mounting hole section 224 are transitionally connected through a taper hole section 223, the positioning fit hole section 222 can ensure that the sealing plug 29 smoothly enters the sealing plug hole, and the taper hole section 223 enables the sealing plug 29 to be pressed in the forward moving process, so that the sealing plug 29 is assembled in the sealing plug mounting hole section 224 in an interference fit manner, and sealing performance is ensured.
As shown in fig. 5, the diameter of the rear end of the rear signal terminal hole 241 is smaller than the diameter of the front end of the sealing plug hole, so that the hole edge of the rear signal terminal hole 241 forms a stop surface to prevent the sealing plug 29 in the sealing plug hole from moving forward. In other embodiments, an annular abutment may be provided on the inner wall surface of the front end of the bore hole, the rear side surface of the annular abutment constituting the stop surface.
In this embodiment, the end cover 28 is an insulating cover, and is generally made of an insulating material such as rubber. As shown in fig. 7, a fixing protrusion 25 is disposed on the rear side surface of the metal end cover 22, the fixing protrusion 25 has a protrusion threaded hole, and a penetrating hole 26 corresponding to the fixing protrusion 25 is disposed on the end cover plate 28 and used for penetrating the fixing protrusion 25, wherein the height of the fixing protrusion 25 is smaller than the thickness of the end cover plate 28, so as to prevent the end cover plate 28 from failing when the threaded fastener is tightened. In other embodiments, the fixing projection may not be provided, or the end cover plate may be provided as a metal cover plate.
In the specific embodiment of the ferrule assembly of the present invention, the structure of the ferrule assembly is the same as that described in the specific embodiment of the connector, and details are not repeated.

Claims (9)

1. The lock pin subassembly, the grafting end of definition lock pin subassembly is the front end, its characterized in that: the insulating device comprises an insulator, an insulating pressing plate and a metal end cover which are sequentially arranged along the front and back directions;
the insulating pressing plate is fixedly arranged on the front side surface of the metal end cover to form a mounting base body;
the insulator is fixedly arranged on the mounting base body;
the insulating pressing plate is provided with a rear power terminal hole, a rear signal terminal hole and a rear grounding terminal hole;
the insulator is provided with a front power terminal hole, a front signal terminal hole and a front grounding terminal hole;
the front power terminal hole and the rear power terminal hole are correspondingly matched and are assembled with a power terminal in a limiting mode, the front signal terminal hole and the rear signal terminal hole are correspondingly matched and are assembled with a signal terminal in a limiting mode, the front grounding terminal hole and the rear grounding terminal hole are correspondingly matched and are assembled with a grounding terminal in a limiting mode, and the grounding terminal is in conductive connection with the metal end cover;
the metal end cover is provided with a power cable electrically connected with the power terminal and a corresponding wire passing hole for passing a signal cable in signal connection with the signal terminal;
the grounding terminal is provided with a penetrating part which penetrates out of the rear grounding terminal hole and is in conductive connection with the metal end cover, the penetrating part is fixedly connected with the metal end cover, and a press-fitting part which is used for press-fitting the insulating pressing plate on the metal end cover is arranged in front of the penetrating part on the grounding terminal.
2. The ferrule assembly of claim 1, wherein: the part of wearing out includes the external screw thread section, is equipped with the threaded connection hole on the metal end cover, the part of wearing out passes through external screw thread section and threaded connection hole screw-thread fit fixed connection on the metal end cover.
3. The ferrule assembly of claim 1, wherein: the rear side of the metal end cover corresponding to the rear power terminal hole is integrally provided with a straight cylinder extending backwards, the rear end of the straight cylinder is fixedly assembled with a straight cylinder cover plate in a detachable mode, a power cable penetrating cylinder for penetrating a power cable is integrally arranged on the cylinder wall of the straight cylinder, the power cable penetrating cylinder extends from inside to outside along the radial direction of the metal end cover, and a shielding sleeve assembly is arranged in the power cable penetrating cylinder so as to be in conductive communication with a grounding terminal through the metal end cover and shield external electromagnetic interference.
4. The ferrule assembly of any of claims 1-3, wherein: be equipped with the barb structure on the insulator, the insulator passes through barb structure joint on insulating clamp plate.
5. The ferrule assembly of any of claims 1-3, wherein: the metal end cover is provided with a wire passing hole for passing a signal cable connected with a signal terminal signal, the wire passing hole is a sealing plug hole, the sealing plug holes correspond to the rear signal terminal holes one by one, and each sealing plug hole is internally provided with a sealing plug; the ferrule assembly further comprises an end cover plate fixedly arranged on the rear side of the metal end cover, positioning protrusions matched with the corresponding sealing plug holes in a positioning mode are convexly arranged on the front side of the end cover plate, the end cover plate extends into the corresponding sealing plug holes through the positioning protrusions to limit the sealing plugs in the corresponding sealing plug holes in the front-back direction, cable holes used for being corresponding to the corresponding sealing plug holes and used for penetrating and installing signal cables are formed in the end cover plate, and the cable holes are communicated with the positioning protrusions from the rear side of the end cover plate to the front side.
6. The ferrule assembly of claim 5, wherein: each sealing plug hole is provided with a positioning matching hole section for the positioning protrusion to extend into and a sealing plug mounting hole section for being matched with the sealing plug, the diameter of the positioning matching hole section is larger than that of the sealing plug mounting hole section, and the positioning matching hole section and the sealing plug mounting hole section are in transitional connection through a conical hole section.
7. The ferrule assembly of claim 5, wherein: the end cover plate is an insulating cover plate, a fixing protrusion is arranged on the rear side face of the metal end cover, the fixing protrusion is provided with a protrusion threaded hole matched with the threaded fastener in a threaded mode, a penetrating hole corresponding to the fixing protrusion and used for penetrating the fixing protrusion is formed in the end cover plate, and the height of the fixing protrusion is smaller than the thickness of the end cover plate.
8. The ferrule assembly of claim 5, wherein: the diameter of the rear end of the rear signal terminal hole is smaller than the diameter of the front end of the sealing plug hole.
9. The connector, including the casing subassembly, the casing subassembly internal fixation is equipped with the lock pin subassembly, its characterized in that: the ferrule assembly is according to any one of claims 1-8.
CN201910810537.7A 2019-08-29 2019-08-29 Connector and ferrule assembly thereof Active CN110571576B (en)

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Application Number Priority Date Filing Date Title
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