CN112003041A

CN112003041A - Cable connector assembly

Info

Publication number: CN112003041A
Application number: CN202010831029.XA
Authority: CN
Inventors: 陈原; 党作红; 贠王震
Original assignee: Avic Fushida Technology Co ltd
Current assignee: Avic Fushida Technology Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2020-11-27
Anticipated expiration: 2040-08-18
Also published as: CN112003041B

Abstract

The invention discloses a cable connector assembly, which comprises a multi-radio-frequency channel connector, wherein a plurality of cable assemblies are electrically connected with the multi-radio-frequency channel connector, and a support body which extends along the axial direction and supports along the radial direction is arranged among the cable assemblies; the supporting body is a block component; the diameter of the end of the support body far away from the multi-radio frequency channel connector is larger than that of the end of the support body near the multi-radio frequency channel connector. The miniaturized multi-radio-frequency channel connector is adaptive to the large-diameter coaxial cable, the requirement of high integration level of communication equipment can be met, meanwhile, the loss can be reduced, and the transmission performance of a communication link is improved.

Description

Cable connector assembly

Technical Field

The invention belongs to the field of radio frequency components, and particularly relates to a cable connector assembly.

Background

With the progress of mobile communication technology, mobile communication devices are developing towards higher integration, multi-frequency and multi-mode. The electrical connector is widely used in mobile communication equipment as a transmission signal or power component. In order to meet the requirement of high integration of mobile communication equipment, connectors are also developed in the direction of integration and miniaturization. Miniaturized multi-rf channel connectors are increasingly used in mobile communication devices.

Signals or power between different communication devices need to be transferred over large distances using coaxial cables. The miniaturization of the electrical connector only enables the electrical connector to be adapted to a coaxial cable with a smaller diameter, and the coaxial cable with the smaller diameter has the disadvantage of excessive insertion loss, so that signals are greatly attenuated in the transmission process, and the signals are distorted.

Disclosure of Invention

The invention aims to provide a cable connector assembly, wherein a smaller-diameter cable is subjected to tension and torque when in use and is easy to generate irreparable damage; or the protective shell is additionally arranged, so that the whole assembly can be integrally injection-molded, and the reliability of the whole assembly is improved.

The technical problem to be solved by the invention can be realized by the following technical scheme:

a cable connector assembly comprises a multi-radio frequency channel connector, a plurality of cable assemblies are electrically connected with the multi-radio frequency channel connector, and a supporting body (5) extending along the axial direction and supporting along the radial direction is arranged among the cable assemblies; the supporting body is a block component;

the diameter of the end of the support body far away from the multi-radio frequency channel connector is larger than that of the end of the support body near the multi-radio frequency channel connector.

Optionally, the diameter of the supporting body is increased along the extending direction of the cable, and a radial recessed cable groove is arranged on the block member.

Optionally, the axial length of the support body is 40-60 mm.

Optionally, the cable assembly is electrically connected with a first cable, a cable adapter and a second cable in sequence along the axial direction, the diameter of the first cable is smaller than that of the second cable, and the first cable is electrically connected with the multi-radio-frequency-channel connector.

Optionally, a wire sealing body is arranged to cover the second cable, the wire sealing body is provided with a tubular connection limiting part, a sealing table covers one end face of the connection limiting part, and the sealing table is provided with one cable hole or a plurality of cable holes.

Optionally, a wire sealing body is arranged to cover the second cable, the wire sealing body includes a first structure and a wire sealing core, the first structure is provided with a tubular connection limiting member, one end surface of the connection limiting member covers a sealing table, and the sealing table is provided with a cable hole;

the wire sealing core is of a block structure embedded with the cable hole, and the block structure is of a structure forming a plurality of cable channels with the cable hole.

Optionally, the sheath is sleeved on the connector connecting the wire sealing body and the multi-radio-frequency channel.

Optionally, the cable adapter is provided with an outer conductor which is at least open at the end part along the axial direction and comprises a first shell and a second shell which are detachably connected; the inner diameter of the open end of the first shell is smaller than the inner diameter of the open end of the second shell; an inner conductor is coaxially disposed within the outer conductor, and an insulator is disposed at an end of the inner conductor.

Optionally, the first housing and the second housing are detachably connected through a thread structure; the first shell open end and the second shell open end are both in a welding connection structure.

Optionally, the inner end diameter of the inner conductor corresponds to the inner end diameters of the first shell and the second shell; an annular first insulator is arranged corresponding to the open end of the first shell, an annular second insulator is arranged corresponding to the open end of the second shell, and the diameter of the first insulator is smaller than that of the second insulator.

By the technical scheme, the miniaturized multi-radio-frequency-channel connector can be adapted to a large-diameter coaxial cable, and the requirement of low loss of signals in the transmission process of a coaxial cable assembly is met.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a perspective view of a cable connector assembly according to the present invention;

fig. 2 is a schematic view of a cable connector assembly according to the present invention;

FIG. 3 is a schematic view of the support structure of the present invention;

fig. 4 is a schematic structural view of a first wire sealing body according to the present invention;

fig. 5 is a schematic structural view of a second wire sealing body according to the present invention;

FIG. 6 is a schematic view of the cable adapter construction of the present invention;

the reference numerals in the figures denote:

1-a first cable, 2-a cable adapter, 21-a first insulator, 22-a first shell, 23-a sealing ring, 24-an inner conductor, 25-a second shell, 26-a second insulator, 3-a second cable, 4-a multi-radio frequency channel connector;

5-support body, 51-support groove, 6-wire sealing body, 61(61 ') -cable hole, 611 ' -first limit table, 612 ' -first plug position, 62-sealing table, 63-connection limit piece, 64-wire sealing core, 641-second limit table, 642-second plug position and 7-sheath.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, use of the directional terms "upper" and "lower" generally refer to the definition in the drawing figures of the accompanying drawings, and "inner" and "outer" refer to the inner and outer of the contours of the corresponding parts.

The multi-rf channel connector 4 has two or more independent rf channels. The second cable 3 cannot be directly adapted to the multi-radio frequency channel connector 4 due to the large diameter, so that the first cable 1 and the cable adapter 2 with small diameters are adopted for switching. The two ends of the first cable 1 are respectively connected to the multi-radio frequency channel connector 4 and the cable adapter 2, and the other end of the cable adapter 2 is connected with the cable adapter 2 and the second cable 3. Referring to fig. 2, the cable assembly of the present invention includes a first cable 1, a cable adaptor 2 and a second cable 3 electrically connected to each other in the axial direction, wherein the diameter of the first cable 1 is smaller than that of the second cable 3; the cable adapter 2 is the cable adapter 2 disclosed by the invention.

Referring to fig. 1-6, the cable connector assembly of the present invention includes a multi-rf channel connector 4, at least one cable assembly electrically connected to the multi-rf channel connector 4, wherein the cable assembly is the cable assembly of the present invention, and the first cable 1 is electrically connected to the multi-rf channel connector 4. After the multi-rf channel connector 4 is adapted to the injection molding of the large-diameter coaxial cable assembly, the following problems may occur: a) the electrical performance index of the first cable 1 is influenced by the deflection generated by the injection molding pressure; b) the injection molding body needs to completely fill gaps among the coaxial cables, the injection molding amount is large, and the cost is high; c) the injection molding time is long, and the production efficiency is low; d) the injection molding glue amount is larger, and the injection molding appearance of the injection molding body is changed due to cooling shrinkage.

When the support body 5 is not incorporated, the following problems are found after injection molding: a) the electrical performance index of the first cable 1 is influenced by the deflection generated by the injection molding pressure; b) the injection molding body needs to completely fill gaps among the plurality of first cables 1, the injection molding amount is large, and the cost is high; c) the injection molding time is long, and the production efficiency is low; d) the injection molding glue amount is larger, and the injection molding appearance is obviously changed due to cooling shrinkage of the injection molding body. Therefore, a support body 5 extending along the axial direction and supporting in the radial direction is also arranged between the first cables 1; the support body 5 is a block member. For example, the diameter of the block member increases along the extending direction of the first cable, and a radial recessed cable groove is arranged on the block member. I.e. a kind of support body 5 is arranged between the first cables 1. The whole of the cable is designed to be conical, the outer layer of the cable is provided with a plurality of semicircular groove-shaped supporting grooves 51, the purpose of the cable is to enable the first cable 1 to be attached to the supporting body 5, and during injection molding, the radial support provided by the supporting body 5 for the first cable 1 can prevent the first cable 1 from deflecting due to injection molding pressure. In addition, the supporting body 5 fills gaps among most of the first cables 1, so that the size needed by injection molding is greatly reduced, the injection molding cost and the injection molding time are reduced, meanwhile, the cooling shrinkage amplitude of the sheath 7 is reduced due to the reduction of the injection molding amount, the injection molding appearance is not obviously changed, and the injection molding appearance requirement is met. Through the influence of the support bodies 5 with different lengths placed on the electrical performance, injection molding parameters and the like of the whole device, research experiments of the support bodies 5 with different lengths are specially carried out, and the research experiments are specifically shown in table 1:

TABLE 1

From the experimental results in table 1, it can be seen that the axial length of the support body 5 is 40-60 mm, good electrical properties can be maintained, and meanwhile, the injection molding time is short, the injection molding amount is small, and the device appearance is good.

In order to solve the problem of injection molding of the multi-radio-frequency-channel connector adaptive large-diameter coaxial cable assembly, the second cable 3 is provided with the wire sealing body 6, so that the injection mold can be ensured to be matched with the second cable 3. A wire sealing body 6 is further arranged on the second cable 3, the wire sealing body 6 is provided with a tubular connection limiting part 63, one end face of the connection limiting part 63 covers the sealing table 62, and one cable hole 61' or a plurality of cable holes 61 are arranged on the sealing table 62.

A wire sealing body 6 is further arranged on the second cable 3, the wire sealing body comprises a first structure and a wire sealing core 64, the first structure is provided with a tubular connection limiting part 63, one end face of the connection limiting part 63 is covered with a sealing table 62, and a cable hole 61' is formed in the sealing table 62; the wire sealing core 64 is a block structure embedded in the cable hole 61 ', and the block structure forms a plurality of cable channels with the cable hole 61'.

In the embodiment of the present disclosure, the connection wire sealing body 6 and the multi-rf channel connector 4 are sleeved with the sheath 7. For improving the structural reliability of whole subassembly, adopt injection molding process, form sheath 7 on first cable 1 and cable adapter 2, however the mould can't accomplish sealed on many second cables 3, consequently design the body of sealing up 6, the design has a plurality of cable holes 61 on the body of sealing up 6, through the clearance between adjustment cable hole 61 and the second cable 3, ensures that second cable 3 can penetrate the body of sealing up 6 smoothly, and ensures that the injection plastic body does not spill over from cable hole 61. The seal line body 6 is provided with a seal platform 62 which is sealed with an injection mold. In addition, a plurality of annular grooves, such as threads, are further designed on the connection limiting part 63 of the wire sealing body 6, and can be axially limited while being in threaded connection with the sheath 7, so that the sheath 7 and the wire sealing body 6 radially interfere with each other to limit the axial displacement of the wire sealing body 6, and thus, after the cable assembly is used for a long time, no gap is generated at the joint surface of the sheath 7 and the wire sealing body 6.

The wire sealing body can also be a split structure in fig. 5, which is advantageous in that the construction of the cable hole 61 ', the sealing platform 62 and the thread 63 can be threaded on the second cable 3 in advance, so that the second cable 3 can be conveniently threaded due to the larger diameter of the inner hole of the cable hole 61'. After the cable adapter 2 is soldered, the wire-sealing core 64 is then inserted between the second plurality of cables 3. The outer surface of the wire sealing core 64 and the inner surface of the cable hole 61 ' are both provided with a limiting table and an inserting position, for example, a first limiting table 611 ' and a first inserting position 612 ' which are sequentially arranged on the inner wall of the cable hole 61 ' along the axial direction, a second limiting table 641 and a second inserting position 642 which are arranged on the outer wall of the wire sealing core 64 push the sealing table 62, the first inserting position 612 ' is inserted with the second inserting position 642, the first limiting table 611 ' and the second limiting table 641 are tightly pushed along the axial direction, the wire sealing core 64 and the cable hole 61 ' are combined into a finished wire sealing body 6, axial movement does not occur, and the injection molding requirement is met.

Referring to fig. 6, the cable adaptor of the present invention, which is provided with an outer conductor open at least at an end portion in an axial direction, includes a first housing 22 and a second housing 25 which are detachably connected; the inner diameter of the open end of the first housing 22 is smaller than the inner diameter of the open end of the second housing 25; an inner conductor 24 is coaxially disposed within the outer conductor, and an insulator is disposed at the end of the inner conductor 24. The arrangement of the first shell 22 and the second shell 25 achieves the requirement that the adaptor is used for adapting a large-diameter cable and a small-diameter cable so as to connect the miniaturized multi-channel radio frequency connector 4, for example, the first shell 22 and the second shell 25 are connected through a threaded structure, and the first shell 22 is provided with the sealing ring 23, so that reliable waterproof performance is ensured after the first shell 22 is connected with the second shell 25. The core wires of the two coaxial cables are connected to the left and right ends of the inner conductor 24, respectively, and can be insulated, isolated and fixed by an insulator.

In order to simplify the manufacturing process and the connection and installation process, in the embodiment of the present disclosure, the first housing 22 and the second housing 25 as the outer conductors are detachably connected by a screw structure; the open end of the first shell 22 and the open end of the second shell 25 are both in a welded connection structure, that is, the open end of the first shell 22 and the open end of the second shell 25 are both connected with a cable to be connected in a welded connection manner, for example, the outer conductor of the first cable 1 and the outer conductor of the second cable 3 are respectively welded with the first shell 22 and the second shell 25, and then the first shell 22 and the second shell 25 are connected through a threaded structure, so that the conduction of the outer conductors of the two coaxial cables is realized.

In the embodiment of the present disclosure, the end inner diameter of the inner conductor 24 corresponds to the end inner diameters of the first and

second housings

22 and 25; an annular first insulator 21 is provided corresponding to the open end of the first housing 22, and an annular second insulator 26 is provided corresponding to the open end of the second housing 25, the diameter of the first insulator 21 being smaller than the diameter of the second insulator 26. Meanwhile, the sleeved inner conductor 24 is provided with a first insulator 21 and a second insulator 26, and the first insulator 21 and the second insulator 26 play a role in axially fixing the inner conductor 24 and simultaneously ensure the coaxiality between the inner conductor 24 and the first shell 22 and the second shell 25. For example, the two ends of the inner conductor 24 are provided with elastic jacks or one end of each elastic jack, the other end of each elastic jack is a circular deep hole, the core wires of the two cables are respectively inserted into the left end and the right end of the inner conductor 24, or one end of each elastic jack is inserted into the inner conductor 24, and the other end of each elastic jack can ensure the conduction of the core wires of the two coaxial cables through a welding mode.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A cable connector assembly, comprising a multi-rf channel connector (4), a plurality of cable assemblies electrically connected to the multi-rf channel connector (4), and a support body (5) axially extending and radially supporting the plurality of cable assemblies; the supporting body (5) is a block component;

the diameter of the end part of the support body (5) far away from the multi-radio frequency channel connector (4) is larger than that of the end part of the support body (5) close to the multi-radio frequency channel connector (4).

2. Cable connector assembly according to claim 1, wherein the support body (5) has an increasing diameter in the direction of extension of the cable and wherein a radially recessed cable groove (51) is provided in said block member.

3. Cable connector assembly according to claim 1 or 2, wherein the axial length of the support body (5) is 40-60 mm.

4. Cable connector assembly according to claim 1 or 2, wherein the cable assembly is provided with a first cable (1), a cable adaptor (2) and a second cable (3) electrically connected in sequence along the axial direction, the diameter of the first cable (1) is smaller than that of the second cable (3), and the first cable (1) is electrically connected with the multi-rf channel connector (4).

5. Cable connector assembly according to claim 4, wherein a wire sealing body (6) is disposed to cover the second cable (3), the wire sealing body (6) is provided with a tubular connection limiting member (63), one end surface of the connection limiting member (63) covers the sealing platform (62), and a cable hole (61') or a plurality of cable holes (61) are disposed on the sealing platform (62).

6. The cable connector assembly according to claim 4, wherein a wire sealing body (6) is disposed to cover the second cable (3), the wire sealing body (6) includes a first structure and a wire sealing core (64), the first structure is provided with a tubular connection limiting member (63), one end surface of the connection limiting member (63) covers the sealing platform (62), and the sealing platform (62) is provided with a cable hole (61');

the wire sealing core is of a block structure embedded with the cable hole (61 '), and the block structure and the cable hole (61') form a plurality of cable channels.

7. The assembly according to claim 6, wherein a sheath (7) is provided to connect said cable sealing body (6) and said multi-RF channel connector (4).

8. Cable connector assembly according to claim 1 or 2, wherein the cable adapter is provided with an at least end-open outer conductor in axial direction, comprising a first housing (22) and a second housing (25) which are detachably connected;

the inner diameter of the open end of the first shell (22) is smaller than that of the open end of the second shell (25);

an inner conductor (24) is coaxially disposed within the outer conductor, and an insulator is disposed at an end of the inner conductor (24).

9. Cable connector assembly according to claim 8, wherein said first housing (22) and said second housing (25) are detachably connected by a screw structure;

the open end of the first shell (22) and the open end of the second shell (25) are both in a welding connection structure.

10. Cable connector assembly according to claim 8, wherein the inner conductor (24) has an end inner diameter corresponding to the end inner diameters of the first and second housings (22, 25);

an annular first insulator (21) is provided corresponding to the open end of the first housing (22), an annular second insulator (26) is provided corresponding to the open end of the second housing (25), and the diameter of the first insulator (21) is smaller than that of the second insulator (26).