CN214313757U - High-frequency single-pair differential connector - Google Patents

Abstract

The utility model discloses a high-frequency single-pair differential connector, which comprises a connector body and a cable electrically connected with the connector body, wherein the cable comprises a plurality of wires, the connector body comprises a shielding sleeve, the shielding sleeve is of a hollow structure, the hollow structure forms an accommodating cavity, a spacing piece is arranged in the shielding sleeve, the accommodating cavity is divided by the spacing piece to form a plurality of isolation cavities, and each wire is arranged in the corresponding isolation cavity; the utility model discloses a high frequency list can effectively shield outside and inside electromagnetic interference to differential connector, effectively promotes the single stability to differential connector signal transmission of high frequency, and is suitable for the connector characteristic impedance requirement through adjustment shielding sleeve's size in order to satisfy the different grade type, effectively promotes the single suitability to differential connector of electric high frequency.

Description

High-frequency single-pair differential connector

Technical Field

The utility model relates to an on-vehicle connector technical field especially relates to a high frequency list is to differential connector.

Background

Along with the increasing requirements of people on safety, environmental protection, comfort, intellectualization and the like of automobiles, the application of emerging technologies such as high-definition vehicle-mounted entertainment systems, Internet of vehicles systems, cloud services, big data and the like of automobiles on the automobiles, and the generation of vehicle-mounted Ethernet buses, the data transmission rate of 100mbit/s or even 20gbit/s can be realized, and meanwhile, the requirements of the automobile industry on the aspects of low electromagnetic radiation, low power consumption, bandwidth allocation, low delay, synchronous real-time property and the like are met. Wherein in order to guarantee vehicle-mounted Ethernet data transmission's stability, a rational in infrastructure vehicle-mounted Ethernet connector is indispensable.

However, the existing vehicle-mounted ethernet connector is prone to influence signal transmission quality due to external and/or internal electromagnetic interference, seriously influences the stability of an automobile and causes potential safety hazards, and the existing vehicle-mounted ethernet connector cannot match with characteristic impedance, cannot meet different use requirements, and seriously restricts the development of the vehicle-mounted ethernet connector.

Therefore, a high frequency single pair differential connector is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high frequency list is to differential connector can effectively shield outside and inside electromagnetic interference, effectively promotes the single stability to differential connector signal transmission of high frequency, and is suitable for the connector characteristic impedance requirement through adjustment shielding sleeve's size in order to satisfy the different grade type, effectively promotes the single suitability to differential connector of electric high frequency.

In order to put purpose on the realization, the utility model discloses a high frequency list is to difference connector, its include the connector body and with the cable that connector body electricity is connected, the cable includes a plurality of wires, the connector body includes shielding sleeve, shielding sleeve is hollow structure, hollow structure forms accepts the chamber, be equipped with the spacer in the shielding sleeve, the spacer will it separates to form a plurality of isolation cavitys, each to accept the chamber the wire is arranged in corresponding isolation cavity.

Compared with the prior art, the utility model discloses an add shielding sleeve, and be equipped with the spacing block in the shielding sleeve, the spacing block will accept the chamber and separate and form a plurality of isolation cavitys, each wire is arranged in corresponding isolation cavity, on the one hand, each wire all is shielded and kept apart by independent isolation cavity, effectively prevents external electromagnetic interference and the electromagnetic interference between the wire, effectively promotes the stability of high frequency single to differential connector signal transmission; on the other hand, the sizes of the isolation sleeve and the isolation sheet can be set according to production requirements, and the characteristic impedance of the shielding sleeve can be changed by adjusting the sizes of the shielding sleeve and/or the isolation sheet so as to match the characteristic impedance requirements of connectors of different types, and the applicability of the electric high-frequency single-pair differential connector is effectively improved.

Preferably, the connector body further includes a terminal assembly and an insulating sleeve, the terminal assembly includes a plurality of terminal units, the insulating sleeve is provided with a plurality of terminal channels with openings at two ends, each terminal channel can be inserted by a corresponding terminal unit, each wire is electrically connected with a corresponding terminal unit, the terminal units pass through the terminal channels, and ends of the terminal units are exposed to the external environment.

Specifically, the insulating sleeve is provided with an accommodating window corresponding to each terminal channel, and the accommodating windows can accommodate deformation of the end parts of the terminal monomers caused by expansion.

Preferably, a first protrusion is arranged on the terminal unit, a first through hole is formed in the insulating sleeve, and when the terminal unit passes through the terminal channel, the first protrusion is clamped and connected with the first through hole, so that the terminal unit is positioned in the terminal channel.

Preferably, the high-frequency single-pair differential connector further includes a housing with openings at two ends, the housing includes a first housing, a second housing and a third housing which are butted in sequence, the connector body is installed in the housing, the first housing is connected with the insulating sleeve in a clamping manner, the second housing is connected with the shielding sleeve in a clamping manner, and the third housing covers the cable.

Preferably, the insulation sleeve is provided with an avoiding groove, the first shell is provided with a first elastic sheet, and when the first shell is clamped and connected with the insulation sleeve, the first elastic sheet is clamped and abutted against the avoiding groove.

Preferably, the shielding sleeve protrudes and extends in the axial direction to form a step, the step is provided with a lug, the lug is provided with a second elastic sheet, the second shell is provided with a second through hole and a third elastic sheet, when the second shell is clamped and connected with the shielding sleeve, the second elastic sheet is clamped and connected with the second through hole, and the third elastic sheet abuts against the step.

Preferably, the cable further includes a sheath and a braid, the sheath covers the braid, the braid covers all the wires, the braid is at least partially overlapped on the outer surface of the shielding sleeve, and when the third shell covers the cable, the third shell is riveted to the braid to conduct the outer shell and the braid.

Preferably, the first housing protrudes axially to form a characteristic impedance adjusting ring, the characteristic impedance adjusting ring covers an end of the insulating sleeve, and the end of the insulating sleeve is provided with a first guide structure for plugging a mating device.

Specifically, the characteristic impedance adjusting ring is connected to an end of the first housing through a second guide structure.

Preferably, the shielding sleeve and the spacer are both made of copper, and the spacer is integrally formed in the shielding sleeve.

Drawings

Fig. 1 is a schematic structural diagram of a high-frequency single-pair differential connector according to a first embodiment of the present invention;

FIG. 2 is a schematic view of the housing of FIG. 1 with the housing removed;

FIG. 3 is an exploded schematic view of FIG. 2;

FIG. 4 is a cross-sectional view of FIG. 2;

FIG. 5 is a cross-sectional view at another angle from FIG. 2;

fig. 6 is a schematic structural view of the shielding sleeve of the present invention;

fig. 7 is a schematic structural view of the insulating sleeve of the present invention;

fig. 8 is a schematic structural diagram of a high-frequency single-pair differential connector according to a second embodiment of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

First embodiment

Referring to fig. 1, the high-frequency single-pair differential connector 100 of the present embodiment is a female connector, and is suitable for being used as a vehicle-mounted ethernet connector, and of course, can also be used as a common connector, and is particularly suitable for being used as a connector with high requirements on characteristic impedance and electromagnetic shielding performance. The structure of the present high-frequency single-pair differential connector 100 of the present embodiment is described in detail below.

Referring to fig. 2 to 7, the high-frequency single-pair differential connector 100 of the present embodiment includes a connector body 10 and a cable 20 electrically connected to the connector body 10, wherein the cable 20 includes a plurality of wires 21, and in the present embodiment, the cable 20 includes two wires 21. The connector body 10 includes a shielding sleeve 11, the shielding sleeve 11 is a hollow structure, the hollow structure forms an accommodating cavity 111, a spacer 112 is disposed in the shielding sleeve 11, the accommodating cavity 111 is separated by the spacer 112 to form two isolated cavities 113, and each conductive wire 21 is disposed in the corresponding isolated cavity 113.

It can be understood that, because the metal has a certain electromagnetic shielding effect, the shielding sleeve 11 can shield the electromagnetic interference from the outside to the wires 21, and because each wire 21 is placed in the independent isolation cavity 113, each isolation cavity 113 can shield the electromagnetic interference from the adjacent wires 21, and therefore, by additionally arranging the shielding sleeve 11 with the isolation sheet 112, the stability of signal transmission can be effectively improved.

Preferably, the shielding sleeve 11 and the spacer 112 are made of copper, and the spacer 112 is integrally formed in the shielding sleeve 11, so as to effectively improve the structural stability of the shielding sleeve 11. It should be noted that the shielding sleeve 11 and the spacer 112 may also be other metal products having shielding function, and are not limited herein.

Since the dimensions of the isolation sleeve and the spacer 112 can be set according to production requirements, and adjusting the dimensions of the isolation sleeve 11 and/or the spacer 112 can change the characteristic impedance of the shielding sleeve 11 to match the characteristic impedance requirements of different types of connectors, thereby effectively improving the applicability of the high-frequency single-pair differential connector 100, the high-frequency single-pair differential connector 100 of the present embodiment can meet the characteristic impedance requirements of different types of connectors by designing the dimensions of the isolation sleeve and/or the spacer 112.

Referring to fig. 2 to 7, the connector body 10 of the present embodiment further includes a terminal assembly 12 and an insulating sleeve 13, the terminal assembly 12 includes two terminal monomers 121, the insulating sleeve 13 is provided with two terminal channels 131 with openings at two ends, each terminal channel 131 is for inserting the corresponding terminal monomer 121, each conducting wire 21 is electrically connected to the corresponding terminal monomer 121, and specifically, an exposed wire end of the conducting wire 21 is electrically connected to a tail portion of the terminal monomer 121 by welding, screwing or winding. The terminal unit 121 passes through the terminal passage 131, and an end of the terminal unit 121 is exposed to the external environment.

Preferably, the insulating sleeve 13 is opened with a receiving window 132 corresponding to each terminal channel 131, and the receiving window 132 can accommodate the deformation of the end of the terminal unit 121 caused by expansion.

Specifically, when the mating device is inserted into the connector body 10, that is, when the male terminal is inserted into the end of the terminal unit 121 in a matching manner, because the end of the terminal unit 121 is of an elastic structure, the end of the terminal unit 121 expands in a radial direction under the extrusion of the mating device, the end of the terminal unit 121 deforms to a certain extent, the receiving window 132 provides a receiving space for the end of the terminal unit 121 to expand and deform in the radial direction, so as to avoid the terminal unit 121 from deforming and yielding due to interference between the terminal unit 121 and the insulating sleeve 13, and effectively avoid the end of the terminal unit 121 from losing elasticity due to permanent deformation on the insulating sleeve 13 due to being abutted against the end of the terminal unit 121, effectively prolong the service life of the terminal unit 121, and ensure good contact between the male terminal and the female terminal, thereby improving the stability of the high-frequency single-pair differential connector 100.

Preferably, the end of the terminal unit 121 of the present embodiment is in a bowl-shaped structure for guiding insertion of the mating device, further, the insulating sleeve 13 forms a guiding structure at the end position of the terminal channel 131 close to the terminal unit 121, specifically, the insulating sleeve 13 forms a guiding inclined plane corresponding to the exit position of each terminal channel 131 for guiding the insertion portion of the mating device into the exit of the terminal channel 131, and the guiding inclined plane is in a bowl-shaped structure, thereby effectively avoiding damage caused by misalignment of insertion of the mating device.

Referring to fig. 2 to 7, in order to better fix the terminal unit 121 in the insulating sleeve 13, the terminal unit 121 of the present embodiment is fixed in the insulating sleeve 13 by a fastening structure. Specifically, the terminal unit 121 is provided with a first protrusion 1211, the insulating sleeve 13 is provided with a first through hole 133, when the terminal unit 121 passes through the terminal channel 131, the first protrusion 1211 is engaged with the first through hole 133, so that the terminal unit 121 is positioned in the terminal channel 131, and at this time, the first protrusion 1211 is abutted against the first through hole 133, thereby effectively preventing the terminal unit 121 from being forced and displaced in the inserting process.

Referring to fig. 1-7, the high-frequency single-pair differential connector 100 of the present embodiment further includes a housing 30 with two open ends, where the housing 30 includes a first housing 31, a second housing 32, and a third housing 33 that are sequentially connected, and preferably, the first housing 31, the second housing 32, and the third housing 33 are integrally formed to ensure the rigidity of the housing 30. Preferably, the housing 30 is a light metal member with a certain shielding performance, such as an aluminum housing, so as to further improve the shielding performance of the high frequency single-pair differential connector 100.

The connector body 10 is installed in the housing 30, the first shell 31 is connected with the insulating sleeve 13 in a clamping mode, the second shell 32 is connected with the shielding sleeve 11 in a clamping mode, and the third shell 33 covers the cable 20, at this time, the housing 30 is fixed with the insulating sleeve 13, the shielding sleeve 11 and the cable 20 in a segmented mode in sequence, and the housing 30 is prevented from falling off or shifting in the using process.

Referring to fig. 3, a plurality of avoiding grooves 134 are formed on the peripheral side of the insulating sleeve 13, a plurality of first elastic pieces 311 equal to the number of the avoiding grooves 134 are formed on the peripheral side of the first housing 31, when the first housing 31 is connected to the insulating sleeve 13 in a clamping manner, the first elastic pieces 311 are respectively clamped and abutted to the corresponding avoiding grooves 134, so that the first housing 31 and the insulating sleeve 13 are effectively fixed, and the avoiding grooves 134 are paired with the peripheral side of the first elastic pieces 311, so that the first housing 31 and the insulating sleeve 13 can be prevented from being displaced due to accidental rotation.

Referring to fig. 2-6, in the present embodiment, the shielding sleeve 11 protrudes and extends axially to form a step 114, a lug 1141 is disposed on the step 114, a second elastic sheet 11411 is disposed on the lug 1141, the second shell 32 is disposed with a second through hole 321 and a plurality of third elastic sheets 322, the insulating sleeve 13 is disposed with a fastening groove 135 for fastening the lug 1141, when the second shell 32 is fastened and connected to the shielding sleeve 11, the second elastic sheet 11411 is fastened and connected to the second through hole 321, and the plurality of third elastic sheets 322 abut against the step 114 respectively. In this embodiment, the upper sidewall and the lower sidewall of the second casing 32 are respectively provided with a third elastic sheet 322, and the third elastic sheet 322 specifically abuts against the connection between the step 114 and the shielding sleeve 11, at this time, the shielding sleeve 11 is effectively fixed in the second casing 32.

It should be noted that the structural form of the shielding sleeve 11 of the present embodiment is not limited to that shown in fig. 6, as an extension, the structure and the shape of the shielding sleeve 11 may be further changed to meet different connector requirements, for example, the lugs may be arranged in a ring shape or a semi-ring shape to provide a requirement for meeting a plurality of characteristic impedance requirements, and for example, the lugs may be additionally provided with a clamping piece to be further clamped and fixed with the insulating sleeve, under the condition that the shielding sleeve 11 is ensured to provide integral shielding, separate shielding and fixed with the insulating sleeve 13, other specific forms of the shielding sleeve 11 are not limited herein.

Referring to fig. 1-5, the cable 20 of the present embodiment further includes a sheath 22 and a braid 23, the sheath 22 covers the braid 23 to protect the braid 23 from the external environment, and the braid 23 covers all the conductive wires 21 to improve the bending resistance of the conductive wires 21. The braid 23 is at least partially overlapped on the outer surface of the shielding sleeve 11, and specifically, the braid 23 is covered on the tail of the shielding sleeve 11, so that the shielding sleeve 11 and the cable 20 are connected together through the braid 23, and the strength of the joint part of the shielding sleeve 11 and the cable 20 is improved. When the third shell 33 covers the cable 20, the third shell 33 rivets the braid 23 to connect the outer shell 30 and the braid 23.

Referring to fig. 1, the first housing 31 of the present embodiment axially protrudes to form a characteristic impedance adjusting ring 3111, and the characteristic impedance adjusting ring 3111 covers the end of the insulating sleeve 13. By designing the size of the characteristic impedance adjusting ring 3111, the characteristic impedance of the characteristic impedance adjusting ring 3111 can be changed, and in combination with the characteristic impedance adjustment of the isolation sleeve and the isolation piece 112, the high-frequency single-pair differential connector 100 of this embodiment can provide the characteristic impedances of different parameters by coordinately designing the sizes of the isolation sleeve, the isolation piece 112 and the characteristic impedance adjusting ring 3111 according to the characteristic impedance requirement of the connector, which is not described herein.

Further, the end of the insulating sleeve 13 is provided with a second guiding structure 3112 for the mating device to be plugged in. Specifically, the characteristic impedance adjusting ring 3111 is connected to the end of the first housing 31 through a second guiding structure 3112, which is an inclined surface, the inclined surface is located between the free end of the first elastic piece 311 and the characteristic impedance adjusting ring 3111, when the mating device is plugged, the inclined surface guides the mating device into the connector body 10 in a contraposition manner, and damage to the first elastic piece 311 due to improper plugging of the mating device and direct collision with the first elastic piece 311 are avoided.

Referring to fig. 1-7, the assembly and use of the high frequency single pair differential connector 100 of the present embodiment will be described in detail as follows:

1. the exposed wire end of each wire 21 is electrically connected to the tail of the terminal unit 121;

2. each terminal unit 121 penetrates through the shielding sleeve 11 from the tail of the corresponding isolation cavity 113 in the shielding sleeve 11, and the lead 21 is placed in the corresponding isolation cavity 113;

3. the braid 23 is wrapped (sleeved) on the tail of the shielding sleeve 11, so that the tail of the shielding sleeve 11 and the cable 20 are in an integral structure;

4. each terminal unit 121 is inserted into the corresponding terminal channel 131 of the insulating sleeve 13 and is covered by the corresponding terminal channel 131, all the terminal units 121 form an insulating separation state through the insulating sleeve 13, when the terminal units 121 are installed in the terminal channels 131 in an aligned manner, the first protrusions 1211 are engaged with the first through holes 133, and the terminal units 121 correspond to the receiving windows 132;

5. the shell 30 is sleeved into the connector body 10 from the third shell 33 part along the end part of the insulating sleeve 13 until the third shell 33 is riveted on the braid 23, at this time, the first elastic sheet 311 is clamped and abutted on the avoiding groove 134 of the first shell 31, the second elastic sheet 11411 is clamped and connected with the second through hole 321 of the second shell 32, and the third elastic sheet 322 is abutted on the step 114 of the second shell 32, so that the shells are installed on the connector body 10 in an aligned mode;

6. in use, the mating device is inserted after the mating portion is aligned with the respective outlet of the terminal channel 131 to complete the mating of the mating device with the high frequency single pair differential connector 100.

It should be noted that the mating device according to the present embodiment is a device that can be plugged into the high-frequency single-pair differential connector 100 of the present embodiment, such as a male connector that is adapted to the high-frequency single-pair differential connector 100.

Second embodiment

Referring to fig. 8, the difference between the present embodiment and the first embodiment is that the high frequency single-pair differential connector 200 of the present embodiment is a male connector, and at this time, the end of the terminal unit 121 extends out of the terminal channel for being plugged with a mating device. The insulating sleeve 13 partially covers the terminal assembly and insulates and separates all the terminal units 121, and at this time, the insulating sleeve 13 further fixes the terminal assembly and makes the ends of all the terminal units 121 spaced apart from each other, thereby preventing the short circuit from being deviated by external force.

The remaining structure of the high frequency single pair differential connector 200 of this embodiment is substantially the same as that of the first embodiment, and the methods of using the male and female connectors are well known in the art and will not be described in detail herein.

With reference to fig. 1-8, the high-frequency single-pair differential connector 100, 200 of the present invention is formed by adding the shielding sleeve 11, and the shielding sleeve 11 is provided with the spacer 112, the spacer 112 will accommodate the cavity 111 to separate and form a plurality of isolation cavities 113, each wire 21 is placed in the corresponding isolation cavity 113, on one hand, each wire 21 is shielded and isolated by the independent isolation cavity 113, so as to effectively prevent the electromagnetic interference between the external electromagnetic interference and the wire 21, and effectively improve the stability of signal transmission of the high-frequency single-pair differential connector 100, 200; on the other hand, since the sizes of the isolation sleeve and the isolation sheet 112 can be set according to production requirements, adjusting the size of the shielding sleeve 11 and/or the isolation sheet 112 can change the characteristic impedance of the shielding sleeve 11 to match the characteristic impedance requirements of different types of connectors, thereby effectively improving the applicability of the electrical high-frequency single-pair differential connector 100, 200.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (10)

1. A high frequency single pair differential connector characterized by: the cable comprises a connector body and a cable electrically connected with the connector body, wherein the cable comprises a plurality of wires, the connector body comprises a shielding sleeve, the shielding sleeve is of a hollow structure, the hollow structure forms an accommodating cavity, a spacer is arranged in the shielding sleeve, the spacer is used for accommodating the cavity and separating the accommodating cavity to form a plurality of isolation cavities, and each wire is arranged in the corresponding isolation cavity.

2. The high frequency single pair differential connector of claim 1, wherein: the connector body further comprises a terminal assembly and an insulating sleeve, the terminal assembly comprises a plurality of terminal monomers, the insulating sleeve is provided with a plurality of terminal channels with openings at two ends, each terminal channel can be used for inserting the corresponding terminal monomer, each wire is electrically connected with the corresponding terminal monomer, the terminal monomers penetrate through the terminal channels, and the end parts of the terminal monomers are exposed to the external environment.

3. The high frequency single pair differential connector of claim 2, wherein: the insulating sleeve is provided with accommodating windows corresponding to each terminal channel, and the accommodating windows can accommodate the deformation of the end parts of the terminal monomers caused by expansion.

4. The high frequency single pair differential connector of claim 2, wherein: the terminal single body is provided with a first bulge, the insulating sleeve is provided with a first through hole, and when the terminal single body penetrates through the terminal channel, the first bulge is clamped and connected with the first through hole, so that the terminal single body is positioned in the terminal channel.

5. The high frequency single pair differential connector of claim 2, wherein: still including being both ends open-ended shell, the shell is including the first casing, second casing and the third casing of butt joint in proper order, the connector body install in the shell, just first casing block is connected insulating sleeve, second casing block is connected shielding sleeve, the cladding of third casing the cable.

6. The high frequency single pair differential connector of claim 5, wherein: the insulation sleeve is provided with an avoiding groove, the first shell is provided with a first elastic sheet, and when the first shell is clamped and connected with the insulation sleeve, the first elastic sheet is clamped and abutted to the avoiding groove.

7. The high frequency single pair differential connector of claim 5, wherein: the shielding sleeve is protruded and extended in the axial direction to form a step, the step is provided with a lug, a second elastic sheet is arranged on the lug, a second through hole and a third elastic sheet are formed in the second shell, when the second shell is clamped and connected with the shielding sleeve, the second elastic sheet is clamped and connected with the second through hole, and the third elastic sheet is abutted to the step.

8. The high frequency single pair differential connector of claim 5, wherein: the cable further comprises a sheath and a woven layer, the sheath covers the woven layer, the woven layer covers all the conducting wires, the woven layer is at least partially overlapped on the outer surface of the shielding sleeve, and the third shell covers the cable, and is riveted to the woven layer to conduct the shell and the woven layer.

9. The high frequency single pair differential connector of claim 5, wherein: the first shell protrudes and extends along the axial direction to form a characteristic impedance adjusting ring, the characteristic impedance adjusting ring coats the end part of the insulating sleeve, and the end part of the insulating sleeve is provided with a first guide structure for plugging a matching device.

10. The high frequency single pair differential connector of claim 9, wherein: the characteristic impedance adjusting ring is connected with an end of the first housing through a second guide structure.

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