CN111370921B - A kind of interface unit - Google Patents

A kind of interface unit Download PDF

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Publication number
CN111370921B
CN111370921B CN202010213593.5A CN202010213593A CN111370921B CN 111370921 B CN111370921 B CN 111370921B CN 202010213593 A CN202010213593 A CN 202010213593A CN 111370921 B CN111370921 B CN 111370921B
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China
Prior art keywords
shielding
cylindrical shell
cable
connector
sealing
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Active
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CN202010213593.5A
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Chinese (zh)
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CN111370921A (en
Inventor
全硒硼
张志中
李立新
邹宏飞
袁鑫
武学顺
韩云钊
刘向阳
柳先波
王恒
郭亚宁
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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 CN202010213593.5A priority Critical patent/CN111370921B/en
Publication of CN111370921A publication Critical patent/CN111370921A/en
Application granted granted Critical
Publication of CN111370921B publication Critical patent/CN111370921B/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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622—Screw-ring or screw-casing
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention relates to a connector, which comprises a cylindrical shell, wherein the inner cavity of the cylindrical shell is a threading channel for a shielded cable to pass through, and one end of the threading channel is provided with a contact element connected with a wire core of the shielded cable; a shield disposed within the threading channel; the shielding piece is of a volute spiral spring structure, the inner periphery of the shielding piece is used for enabling the shielding cable to penetrate through and tightly hold the shielding section of the shielding cable, and the outer periphery of the shielding piece is elastically attached to the inner wall of the threading channel so as to achieve conductive contact with the cylindrical shell. Such connectors facilitate the operator's wiring operations.

Description

A kind of interface unit
Technical Field
The present invention relates to a connector.
Background
The shielding cable is a transmission line formed by wrapping a wire core by using a shielding layer formed by a metal braided net so as to ensure that the cable still has stable and reliable transmission performance in an electromagnetic interference environment. When the shielded cable is connected with the connector, the shielding layer is in conductive connection with the shell of the connector, so that interference current on the shielding layer can flow to the connector and the grounding is realized through the connector. In order to electrically connect the shield to the connector housing, a shield is typically provided in the connector housing, with which shield an electrically conductive connection is made between the cable shield and the connector housing.
In a connector in the prior art as shown in fig. 1, a sleeve 21 of a housing is provided with a shielding member, the shielding member is a shielding ring with a circle of elastic claws 22 in the circumferential direction, during a wiring operation, an insulating sheath at the end of a shielded cable is stripped to expose the shielding layer to form a shielding section, then a copper sheet is wound on the shielding section, the cable passes through the housing, the elastic claws are opened when passing through the shielding ring, after the cable is installed, the overhanging ends of the elastic claws are attached to the copper sheet, and the copper sheet is connected with the shielding layer of the cable. The shielding ring is simultaneously in conductive contact with the adapter sleeve 21, so that the cable shielding layer is conductively connected with the connector housing.
Handle shielded structure like this, need twine the integrality of copper sheet in order to protect the shielding layer on the shielding section, installation operation is comparatively loaded down with trivial details, if not twine the copper sheet, then the resistance that the cable shielding layer received when passing the position of shielding part is great, it easily scatters or rolls back to weave netted shielding layer, and there is the unusual atress of certain bullet claw easily when the adjustment cable and leads to plastic deformation's possibility, so that can't paste tight shielding layer and influence shielding effect as to the bullet claw, it is comparatively inconvenient to lead to the installation of shielding part on the cable shielding section. Especially, when a plurality of cables need to be connected to the connector, the channel surrounded by the elastic claws of the shielding ring is a circular channel, so that the shielding ring cannot be in circumferential shielding contact with the plurality of cables, and other cables cannot pass through the side of the channel surrounded by the elastic claws after the shielding ring is installed in the adapter sleeve, so that the connector using the shielding ring cannot effectively shield the plurality of cables when being connected with the plurality of cables.
Disclosure of Invention
The invention aims to provide a connector to solve the technical problem that in the prior art, the connector is difficult to connect with a shielded cable due to the fact that a shielding piece of the connector is not easy to mount on the shielded cable.
In order to solve the problems, the connector adopts the following technical scheme:
a connector comprises a cylindrical shell, wherein an inner cavity of the cylindrical shell is a threading channel for a shielded cable to pass through, and one end of the threading channel is provided with a contact element connected with a wire core of the shielded cable; a shield disposed within the threading channel; the shielding piece is of a volute spiral spring structure, the inner periphery of the shielding piece is used for enabling the shielding cable to penetrate through and tightly hold the shielding section of the shielding cable, and the outer periphery of the shielding piece is elastically attached to the inner wall of the threading channel so as to achieve conductive contact with the cylindrical shell.
The beneficial effects are that: based on the spiral spring structure of the shielding element, when the shielding element is installed on the cable, the radial size of the inner circumference of the shielding element can be expanded to ensure that the inner diameter of the shielding element is larger than the outer diameter of the shielding section of the cable, thereby avoiding the scattering or the retraction of the shielding layer caused by larger friction force generated between the shielding element and the shielding layer when the shielding element is installed, meanwhile, compared with the independent spring claw, the inner circumference of the shielding piece with the spiral spring structure is of an integral structure, when the radial dimension of the shielding piece is enlarged, the shielding piece is not easy to generate plastic deformation, so that the inner periphery of the shielding piece can be conveniently sleeved on the cable, the installation operation of the shielding piece on the shielded cable is simple and easy, meanwhile, the radial dimension of the periphery can be conveniently reduced through elastic deformation, so that the shielding part can be conveniently installed in the threading channel, and the connection operation of the connector and the shielding cable is simple and easy.
Furthermore, more than two shielding pieces are arranged in the threading channel, the more than two shielding pieces are matched with the stranded cables in a corresponding number in a one-to-one correspondence mode, the inner peripheries of the shielding pieces are staggered in the radial direction of the cylindrical shell, and the shielding pieces are arranged in parallel along the axial direction of the cylindrical shell.
The beneficial effects are that: the inner circumference of each shielding piece is staggered in the radial direction of the cylindrical shell, and each shielding piece can be connected with the corresponding shielding cable, so that the connector can be connected with a plurality of strands of shielding cables and can be effectively connected with each strand of shielding cable in a shielding mode.
Further, the projections of the inner circumferences of the shielding pieces on the cross section of the cylindrical shell are uniformly distributed.
The beneficial effects are that: the inner circumference of each shielding piece is arranged in a staggered mode and is uniformly distributed along the cross section of the cylindrical shell, so that cables matched with the shielding pieces can be uniformly distributed in the threading channel, the shielding cables are prevented from being locally crowded in the threading channel, and the operation of wiring is facilitated for operators.
The tail sealing accessory is hermetically arranged at the other end of the cylindrical shell and is provided with a through hole, and the through hole is used for allowing the shielded cable to pass through and is in sealing fit with the shielded cable; the tail sealing accessory is provided with an extending structure which is arranged in the threading channel after being installed on the cylindrical shell, and the extending structure is used for pushing the shielding piece sleeved on the shielding cable sheath to the shielding section when the tail sealing accessory is connected with the cylindrical shell.
The beneficial effects are that: when the tail sealing accessory is installed, the tail sealing accessory pushes the shielding piece to the shielding section through the stretching structure, a tool pushing towards the shielding section is not required to be arranged on the shielding piece, and meanwhile, in the wiring process, the shielding piece does not need to be subjected to special operation pushing towards the shielding section, so that the wiring operation of the connector and the shielding cable is simple and easy.
Furthermore, the tail sealing accessory comprises a sealing ring sleeve and a threaded sleeve, the threaded sleeve is screwed on the cylindrical shell, the sealing ring sleeve is arranged in the threaded sleeve, one end of the sealing ring sleeve forms the stretching structure and stretches into the threading channel, and the other end of the sealing ring sleeve is in sealing fit with the shielded cable.
The beneficial effects are that: the sealing ring sleeve is used for blocking and limiting the shielding part through the self extending structure, and meanwhile, the other end of the sealing ring sleeve is tightly pressed on the shielding cable in a sealing mode, so that the sealing ring sleeve can be used for stably limiting the shielding part.
Furthermore, the extending structure is a ring sleeve structure, and the outer peripheral surface of the ring sleeve structure is in sealing fit with the cylindrical shell.
The beneficial effects are that: the extending structure is sealed with the cylindrical shell at the same time, so that good sealing performance between the tail sealing accessory and the cylindrical shell is guaranteed.
Further, the cylindrical housing has a stepped surface therein for stopping the shield from moving forward.
The beneficial effects are that: the shielding part is stopped through the step surface, so that the shielding part is stably positioned at the mounting position and is in stable contact fit with the shielding section of the corresponding shielding cable, and the connector is ensured to have a stable and reliable working state during working.
Drawings
FIG. 1 is a schematic diagram of a prior art connector and shield therefor;
fig. 2 is a schematic view of a connector of embodiment 1 of the present invention with shielded cable access and no tail seal attachment installed;
fig. 3 is a schematic view of the structure of a shield member of embodiment 1 of the connector of the present invention;
fig. 4 is a schematic view showing a state in which a shield member of embodiment 1 of the connector of the present invention is mounted in a cylindrical housing;
FIG. 5 is a schematic view showing the structure of embodiment 1 of the connector according to the present invention;
fig. 6 is a schematic view showing a structure in which a part of embodiment 2 of the connector of the present invention is fitted to a shielded cable;
fig. 7 is a schematic structural view showing a state in which a shield member and a shielded cable of embodiment 2 of the connector of the invention are mounted in a cylindrical housing;
in the figure: 1-a shielded cable; 2-a cylindrical housing; 3-a contact member; 4-a shield; 5-inner circumference; 6-periphery; 7-sealing ring sleeve; 8-thread sleeve; 9-an extension section; 10-a sealing section; 11-a sealing ring; 12-tail seal attachment; 13-step surface; 14-preassembly; 15-a first cable; 16-a second cable; 17-a shielding layer; 18-a conical surface; 21-an adapter sleeve; 22-spring claw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Specific embodiment 1 of the connector of the present invention: in this embodiment, the structure of the connector of the present invention will be described by taking a connection with a shielded cable as an example. As shown in fig. 2, the connector includes a cylindrical housing 2, and an inner cavity of the cylindrical housing 2 serves as a threading passage for passing through terminals of the shielded cable 1. One end of the cylindrical shell 2 is provided with a contact element 3 for connecting with a wire core of the shielded cable 1, and the other end is provided with a tail sealing accessory 12 for sealing between the cylindrical shell 2 and the shielded cable 1. In order to connect the shielding of the shielded cable 1 in an electrically conductive manner to the cylindrical housing 2 of the connector, a shielding 4 is also arranged in the passage. When connecting, the front end of the shielded cable 1 is stripped to expose the shielding layer 17 to form a shielding section. It should be noted that the housing is configured as a cylinder, and is configured to enclose an inner cavity in which components such as an insulating member, a contact member, and a shielding member can be disposed, and a cable can be inserted into the inner cavity to connect with the shielding member and the contact member.
As shown in fig. 3, the shielding element 4 is of a spiral spring structure, and the inner circumference 5 of the spiral spring structure is used for allowing the shielded cable 1 to pass through and hugging the shielding section of the shielded cable 1, so as to realize the conductive connection between the shielding element 4 and the shielding layer 17 of the shielded cable 1. The outer periphery 6 is intended to be in conductive contact with the cylindrical shell 2, and after the shield 4 has been installed in the threading passage, the outer periphery 6 is stretched by its own elasticity against the inner wall of the cylindrical shell 2, as shown in fig. 4, to achieve conductive contact with the cylindrical shell 2.
With regard to the structure of the tail seal attachment 12, as shown in fig. 2, the tail seal attachment 12 has a through hole through which the terminal of the shielded cable passes, and the tail seal attachment 12 is mounted at the rear end of the cylindrical housing 2 for sealing between the cylindrical housing 2 and the shielded cable 1 at the time of wiring.
Specifically, the tail sealing attachment 12 comprises a sealing ring sleeve 7 and a screw sleeve 8, wherein the sealing ring sleeve 7 is provided with an extending section 9 and a sealing section 10. As shown in fig. 5, after the tail seal attachment is mounted on the cylindrical housing 2, the extending section 9 extends into the threading passage as an extending structure, and the extending section 9 is in sealing engagement with the inner wall of the cylindrical housing 2 through a seal ring 11 provided on the outer peripheral surface thereof. The threaded sleeve 8 is used for being rotatably installed at the rear end of the cylindrical shell 2 to achieve installation of the tail sealing accessory 12 at the rear end of the cylindrical shell 2, and meanwhile, the threaded sleeve 8 extrudes and deforms the sealing section 10 of the sealing ring sleeve 7 to enable the sealing section 10 to tightly hold the shielding cable 1, so that sealing matching of the tail sealing accessory 12 and the shielding cable 1 is achieved. The transition connection part of the extending section 9 and the sealing section 10 is provided with a step structure, and the sealing ring sleeve 7 is in stop fit with the rear end face of the cylindrical shell 2 through the step structure so as to ensure that the sealing section 10 cannot be pressed into the threading channel. In other embodiments, the sealing collar may not have an intruding section if the requirements for the level of protection of the connector are not high for the actual application, such as the use of the connector indoors.
As shown in fig. 2, the inside of the cylindrical housing 2 further has a step surface 13, and the step surface 13 is used for stop-fitting with one end of the shield 4 facing the contact 3 to determine the installation position of the shield 4 in the cylindrical housing 2. In other embodiments, the step surface may not be provided on the cylindrical outer inner wall if the shield achieves its position retention in the threading passage by having a large frictional force between its outer periphery and the inner wall surface of the cylindrical housing due to its own tensile force.
During installation, the tail sealing accessory 12 is firstly sleeved on the shielded cable 1, then the radial dimension of the inner periphery 5 of the shielding element 4 is expanded, the shielding element 4 penetrates through the front end of the shielded cable 1, penetrates through the shielding section and then is sleeved on the outer skin of the shielded cable 1, as shown in fig. 2, the installation position of the shielding element 4 on the shielded cable 1 is defined as a pre-installation position 14, and in other embodiments, the shielded cable 1 can also be wound into the inner periphery 5 through an opening of the shielding element 4 in a spiral spring structure, so that the shielding element 4 is installed in the pre-installation position 14. And then connecting the wire core of the shielded cable 1 with the contact element 3, contracting the radial dimension of the outer periphery of the shielding element 4 after connection, pushing the shielding element 4 into the cylindrical shell 2 until the shielding element 4 is in stop fit with the step surface 13, wherein the inner periphery 5 reaches and is tightly clamped on the shielding section, and the sheath of the shielded cable 1 stops the backward movement of the shielding element 4 along the axial direction of the cylindrical shell 2. The periphery 6 is tightly attached to the inner wall of the cylindrical shell 2 under the restraint of the cylindrical shell 2, and the shielding connection between the shielding layer of the shielded cable 1 and the connector shell is realized. Then, the sealing ring sleeve 7 and the screw sleeve 8 are pushed to the rear end of the cylindrical shell 2, the extending section 9 of the sealing ring sleeve 7 is inserted into the cylindrical shell 2, the screw sleeve 8 is screwed at the rear end of the cylindrical shell 2, the screw sleeve 8 extrudes the sealing section 10 through the conical surface 18 on the inner peripheral surface of the screw sleeve 8, the sealing section 10 is deformed axially and radially, and the sealing ring sleeve 7 realizes sealing between the cylindrical shell 2 and the shielded cable 1 by combining the sealing fit of the extending section 9 and the cylindrical shell 2.
In other embodiments, if the inside of the cylindrical housing allows the shield to slide smoothly and the outer circumference of the shield can be in stable conductive contact with the cylindrical housing, the shield may be mounted on the shield segment of the shielded cable and then the core of the shielded cable may be electrically connected to the contact.
It should be noted that the cable may be a cable for transmitting electric energy in an electric circuit, or may be various cables that need shielding when connected with corresponding connectors, such as a radio frequency cable, a photoelectric composite cable, and a water-cooling special cable, and the connector is naturally a connector adapted to a type of the corresponding cable.
Embodiment 2 of the connector of the present invention is different from embodiment 1 in that, in this embodiment, as shown in fig. 6, the connector is connected to two shielded cables, and naturally, the two shielded cables are shielded, wherein the two shielded cables are respectively a first cable 15 and a second cable 16, two shielding members 4 are provided in the threading passage in one-to-one correspondence with the two shielded cables, the two shielding members 4 are arranged side by side along the axis of the cylindrical housing 2, inner circumferences of the two shielding members are arranged in a staggered manner along the radial direction of the cylindrical housing 2, and a step surface in the cylindrical housing 2 is in stop fit with the shielding member 4 located on the front side. When wired, the second cable 16 passes between the layer gaps of the shields that mate with the first cable 15 to make a connection with the corresponding shield 4, and the first cable 15 passes between the layer gaps of the shields that mate with the second cable 16 to make a connection with the corresponding contact.
In this embodiment, the inner peripheries of the two shielding members 4 are eccentrically disposed with respect to their respective outer peripheries, as shown in fig. 7, so that the projections of the two shielding members 4 along the axis of the cylindrical housing 2 are uniformly distributed on the cross section of the cylindrical housing 2, thereby ensuring that each shielded cable has a uniform installation space in the threading passage, and avoiding the shielded cable from being locally crowded in the threading passage to cause inconvenience in wiring. In another embodiment, when the threading passage space is large, only the inner periphery of one of the shield members may be eccentrically disposed with respect to the outer periphery, and the inner peripheries of the shield members may be displaced in the radial direction of the cylindrical housing. More than two shielding pieces can be arranged in the connector, the shielding pieces are arranged in parallel along the axis of the cylindrical shell, and the inner peripheries of the shielding pieces are arranged in a staggered mode along the radial direction of the cylindrical shell.
Embodiment 3 of the connector of the present invention is different from embodiment 1 in that, in this embodiment, the tail sealing attachment is a sealing ring sleeved on the shielded cable, an outer diameter of the sealing ring is larger than an inner diameter of the cylindrical housing, after the wiring operation of the shielded cable and the connector is completed, the sealing ring is interference-fitted in the threading passage to realize the installation at the rear end of the cylindrical housing, and under the constraint of the cylindrical housing, the sealing ring is radially contracted to be in sealing fit with the shielded cable. In order to prevent the sealing ring from being separated from the threading channel, the tail sealing accessory also comprises a stopping piece arranged at the rear end of the cylindrical shell, the stopping piece can be a snap spring, threads can be processed on the inner wall of the rear end of the cylindrical shell, and the stopping ring with threads arranged on the outer peripheral surface is screwed in the cylindrical shell to be used as the stopping piece.
Different from embodiment 1, in embodiment 4 of the connector of the present invention, the front end surface of the extending structure, that is, the extending section, is located on the front side of the shielding cable sheath, and when the shielding member and the tail sealing accessory are mounted, the shielding member sleeved on the shielding cable sheath can be pushed to the shielding section by pushing of the extending structure, and the extending structure is used to stop the movement of the shielding member backwards along the axis of the cylindrical housing. In order to ensure that the extending structure can push the shielding element forwards, the extending section can be made of hard insulating materials, such as polytetrafluoroethylene, hard rubber and the like.
When the sealing between the cylindrical shell and the shielding cable can be ensured through the axial and radial deformation of the sealing section, the extending structure can be not a ring sleeve structure, for example, a push rod fixed on one end of the sealing section facing the cylindrical shell can be adopted, and the plurality of push rods are arranged along the circumferential direction of the ring sleeve-shaped sealing section so as to stably push the shielding piece. In other embodiments, the tail accessory may further include a pushing member, the sealing ring in embodiment 3, and a snap spring, the pushing member includes an annular portion for being fitted over the shielded cable, and a push rod fixed to the annular portion and overhanging toward the front end, the pushing member, the sealing ring, and the snap spring are sequentially fitted over the shielded cable from front to back, when the shielding member needs to be pushed into the threading passage, the pushing member is pushed into the threading passage to push the shielding member toward the shielding section, then the sealing ring is fitted into the threading passage, and the shielding member is further pushed toward the shielding section by the pushing member in the process of fitting the sealing ring, so that the shielding member is finally pushed to and tightened around the shielding section, and finally the snap spring is fitted into the rear end of the cylindrical housing. In the tail sealing accessory of the structure, the pushing piece forms an extending structure.
Different from the embodiment 1, the embodiment 5 of the connector in the invention is that the rear end of the cylindrical shell is in a closing structure, after the shielding cable is inserted into the threading channel, the sheath of the shielding cable is in sealing fit with the rear port of the cylindrical shell, when in wiring, the shielding cable is inserted into the threading channel, the wire core of the shielding cable extends out of the front side of the cylindrical shell, the shielding part is arranged on the shielding section and connected with the wire core and the contact part, then the shielding cable is pulled backwards, and the periphery of the shielding part is contracted along the radial direction in the pulling process, so that the shielding part is prevented from being detached from the shielding section due to overlarge friction force with the inner wall of the cylindrical shell in the process of pulling the shielding cable into the cylindrical shell. Therefore, a tail sealing accessory is not required to be arranged at the rear end of the cylindrical shell, and a step surface for stopping the forward movement of the shielding piece is not required to be arranged on the inner wall of the cylindrical shell.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.

Claims (6)

1. A connector, comprising:
the inner cavity of the cylindrical shell is a threading channel for the shielded cable to pass through, and one end of the threading channel is provided with a contact element connected with a wire core of the shielded cable;
a shield disposed within the threading channel;
the method is characterized in that:
the shielding part is of a volute spiral spring structure, the inner periphery of the shielding part is used for allowing the shielding cable to pass through and tightly hold the shielding section of the shielding cable, and the outer periphery of the shielding part is elastically attached to the inner wall of the threading channel so as to realize conductive contact with the cylindrical shell;
more than two shielding pieces are arranged in the threading channel, the more than two shielding pieces are matched with the corresponding number of stranded shielding cables in a one-to-one correspondence mode, the inner circumferences of the shielding pieces are staggered in the radial direction of the cylindrical shell, and the shielding pieces are arranged in parallel along the axial direction of the cylindrical shell;
the shielded cable passes through the inner periphery of the shield correspondingly matched with the shielded cable and passes through the layer gaps of the shields correspondingly matched with other shielded cables.
2. The connector of claim 1, wherein: the projections of the inner circumferences of the shielding pieces on the cross section of the cylindrical shell are uniformly distributed.
3. The connector of any one of claims 1-2, wherein: the tail sealing accessory is hermetically arranged at the other end of the cylindrical shell and is provided with a through hole, and the through hole is used for allowing the shielded cable to pass through and is in sealing fit with the shielded cable; the tail sealing accessory is provided with an extending structure which is arranged in the threading channel after being installed on the cylindrical shell, and the extending structure is used for pushing the shielding piece sleeved on the shielding cable sheath to the shielding section when the tail sealing accessory is connected with the cylindrical shell.
4. The connector of claim 3, wherein: the tail sealing accessory comprises a sealing ring sleeve and a threaded sleeve, the threaded sleeve is screwed on the cylindrical shell, the sealing ring sleeve is arranged in the threaded sleeve, one end of the sealing ring sleeve forms the stretching structure and stretches into the threading channel, and the other end of the sealing ring sleeve is in sealing fit with the shielded cable.
5. The connector of claim 3, wherein: the extending structure is a ring sleeve structure, and the peripheral surface of the ring sleeve structure is in sealing fit with the cylindrical shell.
6. The connector of any one of claims 1-2, wherein: the cylindrical shell is internally provided with a step surface for stopping the shield from moving forwards.
CN202010213593.5A 2020-03-24 2020-03-24 A kind of interface unit Active CN111370921B (en)

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Application Number Priority Date Filing Date Title
CN202010213593.5A CN111370921B (en) 2020-03-24 2020-03-24 A kind of interface unit

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CN111370921B true CN111370921B (en) 2021-07-30

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