CN112928550A

CN112928550A - Cable connector and electronic device

Info

Publication number: CN112928550A
Application number: CN202110090854.3A
Authority: CN
Inventors: 冯罡; 伍长鸣; 漆一宏; 于伟
Original assignee: Leader Technology Hengqin Co ltd
Current assignee: Zhuhai Lingyi Technology Co ltd
Priority date: 2021-01-22
Filing date: 2021-01-22
Publication date: 2021-06-08
Anticipated expiration: 2041-01-22
Also published as: CN112928550B

Abstract

The invention provides a cable connector and an electronic device, wherein the cable connector comprises a socket (10) and a plug (20), the socket (10) is provided with a socket (11) and a connecting part (12) for connecting a circuit board (1); the plug (20) comprises a fixing piece (21) and an elastic connecting piece (22); the elastic connecting piece (22) comprises a fixing part (221) and a first elastic contact part (222) connected with the fixing part (221), and the fixing part (221) is fixedly connected with the fixing piece (21) and is used for connecting the inner conductor (2) of the cable (5); the fixing piece (21) can be connected with the socket (10), and the first elastic contact part (222) passes through the jack (11) to be in elastic contact with the signal connection contact (3) on the circuit board (1) to form electric connection. The cable connector has short connection length and good shielding property.

Description

Cable connector and electronic device

Technical Field

The present invention relates to the field of data transmission technologies, and in particular, to a cable connector and an electronic device.

Background

With the continuous progress of technology, the data processing speed of modern network servers and supercomputers is faster and faster, and a special processing chip (ASIC) transmits ultra-high speed data by using a serial differential signal link, which can reach hundreds of Gbps. On a Printed Circuit Board (PCB) with a complex system and a high density of components, it is increasingly difficult to find a wiring space that meets the requirement of high-speed differential data transmission. Precision cable connectors are therefore required to deliver the high-speed differential signals of the dedicated processing chip directly to the required equipment. The performance of the cable connector can have a crucial impact on the quality of the signal transmission.

The cable connector in the related art is usually too long in connection length, which is not favorable for continuous transmission of signals and for complete transmission of signal waveforms. Here, the connection length refers to a length from a position where the outer shield of the micro-coaxial line on the plug is opened to a position where the signal line is connected to a PCB (i.e., a circuit board).

In addition, in terms of connector shielding design, some connectors do not achieve full shielding of 360 degrees, and when high-speed signals pass through, large radiation is generated, and electromagnetic leakage and interference are formed.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an embodiment of the present invention provides a cable connector, including:

a socket having a socket and a connection portion for connecting a circuit board;

the plug comprises a fixing piece and an elastic connecting piece; the elastic connecting piece comprises a fixing part and a first elastic contact part connected with the fixing part, and the fixing part is fixedly connected with the fixing piece and is used for connecting an inner conductor of a cable;

the fixing piece can be connected with the socket, and the first elastic contact part penetrates through the jack to be in elastic contact with the signal connection contact on the circuit board so as to form electric connection.

The cable connector in the embodiment of the invention has short electrical signal connection length, thereby being beneficial to impedance matching of the cable connector and the cable and improving signal integrity.

According to the cable connector of the embodiment of the present invention, the socket includes a first housing, the inserting opening and the connecting portion are formed on the first housing;

the fixing piece can be connected with the first shell, and the first elastic contact part penetrates through the socket to be in elastic contact with the signal connection contact on the circuit board so as to form electric connection.

According to the cable connector provided by the embodiment of the invention, the fixing piece comprises a second shell and an insulator, one end of the insulator is fixed in the second shell, an insulating groove is formed in the insulator, and the elastic connecting piece penetrates through the insulating groove;

the second shell and/or the insulator can be connected with the first shell, and the first elastic contact part is elastically contacted with the signal connection contact on the circuit board through the jack to form electric connection.

According to the cable connector of the embodiment of the present invention, the insulator is interference-fitted into the second housing.

According to the cable connector of the embodiment of the invention, the first connecting part is formed on the insulator and/or the second shell, and the second connecting part matched and connected with the first connecting part is formed on the first shell.

According to the cable connector of the embodiment of the invention, the first connecting part is a protruding structure formed on the insulator and/or the second shell, and the second connecting part is a clamping groove formed on the first shell.

According to the cable connector of the embodiment of the invention, the first housing is provided with a fixing part, and the fixing part is used for fixing the second housing when the fixing part is connected with the first housing.

According to the cable connector of the embodiment of the present invention, the fixing portion is an elastic hook formed at a socket position of the first housing, and can be pressed against the second housing when the fixing member is connected to the first housing.

According to the cable connector provided by the embodiment of the invention, the number of the elastic connecting pieces is multiple, the elastic connecting pieces are divided into multiple groups which are respectively fixedly connected with the fixing piece, and each group comprises at least one elastic connecting piece;

the number of the insulation grooves is multiple, and one elastic connecting piece is arranged in each insulation groove.

According to the cable connector of the embodiment of the invention, the plug further comprises a shielding partition plate which is fixedly connected with the fixing piece and used for isolating each group of elastic connecting pieces.

According to the cable connector of the embodiment of the invention, the shielding partition is a metal plate, the metal plate is bent to form a plurality of isolation spaces, and a group of elastic connecting pieces is arranged in each isolation space.

According to the cable connector of the embodiment of the invention, the shielding partition plate is provided with a second elastic contact part which is used for elastically connecting the grounding connection contact on the circuit board.

According to the cable connector of the embodiment of the present invention, a part of the structure of the insulator is located between the shielding spacer and the elastic connection member.

According to the cable connector of the embodiment of the invention, all the elastic connecting pieces of each group of the elastic connecting pieces are bent in the same direction, and the bending directions of the elastic connecting pieces of adjacent groups are opposite.

According to the cable connector of the embodiment of the invention, when the fixing piece is connected with the socket, the whole plug is positioned in the first shell.

According to the cable connector provided by the embodiment of the invention, each group of elastic connecting pieces comprises two elastic connecting pieces which are distributed at intervals along the interval direction; the angle range of the interval direction of any two adjacent groups of elastic connecting pieces is 85-95 degrees.

According to the cable connector of the embodiment of the present invention, the first elastic contact portion has an arc-shaped structure.

According to the cable connector of the embodiment of the present invention, the shape of the elastic connecting member is S-shaped, C-shaped or L-shaped.

An embodiment of the present invention also provides an electronic device, including: a circuit board, a cable conductor and the cable connector of any of the above embodiments, wherein the inner conductor of the cable conductor is connected to the fixing portion, and the connecting portion of the socket is connected to the circuit board.

The electronic equipment according to the embodiment of the application is stable and reliable in signal.

In some embodiments, the fixing member is configured to be capable of being connected with the shielding layer of the cable line in a sealing manner.

Other advantages and technical effects of the cable connector and the electronic device according to the embodiments of the present invention are described in detail in the detailed description.

Drawings

FIG. 1 is a schematic perspective view of a cable connector for connecting a circuit board and a cable according to an embodiment of the present invention;

FIG. 2 is an exploded perspective view of FIG. 1;

FIG. 3 is a perspective exploded view of another mode of explosion of FIG. 1;

FIG. 4 is a schematic perspective view of a resilient connector according to an embodiment of the present invention;

FIG. 5 is a front view of a cable connector connecting a circuit board and a cable wire in an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view taken along A-A of FIG. 5;

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 5;

FIG. 8 is a schematic perspective view of a plug-in connection cable according to an embodiment of the present invention;

FIG. 9 is a plan view of a plug connection cable wire according to the embodiment of the present invention;

FIG. 10 is an exploded schematic view of FIG. 9;

FIG. 11 is a schematic perspective view of a shielding spacer in an embodiment of the invention;

FIG. 12 is a top view of a shielding spacer in an embodiment of the invention;

FIGS. 13-15 are schematic views of elastic contact between the elastic connecting member and the circuit board according to three embodiments of the present invention;

FIG. 16 is a schematic view of a circuit board showing the location of shielding spacers in an embodiment of the invention;

FIG. 17 is a perspective view of another embodiment of a plug-in cable according to the present invention;

FIG. 18 is a top view of the plug-in connection cable of FIG. 17;

fig. 19 is a perspective view of the shielding spacer of fig. 17.

Reference numerals:

1-a circuit board; 2-an inner conductor; 3-signal connection contacts; 4-a ground connection contact; 5-a cable line;

10-a socket; 11-a socket; 12-a connecting part; 13-a first housing; 131-a second connecting portion; 132-a fixed part;

20-a plug; 21-a fixing member; 211-a second housing; 212-an insulator; 2121-insulating groove; 2122-a first connection; 22-an elastic connection; 221-a fixed part; 222-a first resilient contact; 23-a shielding spacer; 231-an isolated space; 232-second resilient contact.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The present embodiment provides a cable connector for connecting an electrical signal between a cable 5 and a circuit board, wherein the cable 5 may be a micro coaxial cable or a shielded twisted pair cable, and a high-speed differential signal may be transmitted by using a dual-core micro coaxial cable. Each cable 5 may be a single core, a dual core or a multi-core, and a dual core is described as an example in this embodiment.

Referring to fig. 1 to 3, the present embodiment provides a cable connector including: a socket 10 and a plug 20, the socket 10 having a socket 11 and a connecting portion 12 for connecting the circuit board 1; referring to fig. 8 to 10, the plug 20 includes a fixing member 21 and an elastic connection member 22; the elastic connecting piece 22 comprises a fixing part 221 and a first elastic contact part 222 connected with the fixing part 221, wherein the fixing part 221 is fixedly connected with the fixing piece 21 and is used for connecting the inner conductor 2 of the cable 5; the fixing member 21 can be connected to the socket 10 and elastically contact the first elastic contact portion 222 with the signal connection contact 3 on the circuit board 1 through the insertion opening 11 to form an electrical connection. From the perspective of signal transmission, the cable connector of the present embodiment has only two switchovers, namely, the inner conductor 2 of the cable 5 is connected to the elastic connector 22, and the first elastic contact portion 222 of the elastic connector 22 is pressed against the signal connection contact 3 of the circuit board 1. However, other connectors in the related art usually have more than three times of switching, so that the switching times of the embodiment are reduced at least once, which is beneficial to reducing the connection length of the cable connector and reducing the discontinuity of signal transmission. Further, the cable connector in the present embodiment is designed to reduce the connection length as much as possible, and the scheme of this embodiment can achieve a connection length not exceeding 4 mm. Shortening the connection length is beneficial to impedance matching of the cable connector and the dual core coaxial line, thereby improving signal integrity.

In a specific embodiment, referring to fig. 2, the socket 10 includes a first housing 13, and the insertion opening 11 and the connection portion 12 are formed on the first housing 13; the socket 11 is an insertion opening of the plug 20, at least part of the structure of the plug 20 enters the first housing 13 through the socket 11 and forms a matching connection with the first housing 13, so that the first elastic contact part 222 can be elastically contacted with the signal connection contact 3 on the circuit board 1, wherein the elastic contact means that the first elastic contact part 222 presses on the signal connection contact 3, and the first elastic contact part 222 is elastically deformed, so that the first elastic contact part 222 is always pressed on the signal connection contact 3 in a state that the plug 20 is connected with the socket 10; specifically, the fixing member 21 can be connected to the first housing 13, and elastically contact the first elastic contact portion 222 with the signal connection contact 3 on the circuit board 1 through the jack 11 to form an electrical connection. The first housing 13 serves on the one hand for connection to the circuit board 1 and on the other hand defines the plug-in position of the plug 20, ensuring that the elastic connection 22 in the plug 20 forms a good basis with the signal connection contacts 3 of the circuit board 1.

With further reference to fig. 9 and 10, the fixing member 21 includes a second housing 211 and an insulator 212, one end of the insulator 212 is fixed in the second housing 211, an insulating groove 2121 is formed on the insulator 212, and the elastic connecting member 22 is inserted into the insulating groove 2121; one function of the insulator 212 is to ensure insulation between the resilient connecting member 22 and other conductive structures, primarily to avoid short circuits between the plurality of resilient connecting members 22. The insulator 212 may be designed based on the inner shape of the second housing 211, and may be a matrix made of an insulating material (e.g., Liquid Crystal Polymer (LCP)), and the insulator 212 may also serve as a support and fixing position for the elastic connection 22. The insulator 212 may be a single piece or may be formed by joining a plurality of pieces, and in the drawings of the present embodiment, the insulator 212 is formed by joining a plurality of pieces.

Further, the second housing 211 and/or the insulator 212 can be connected to the first housing 13, and the first elastic contact portion 222 is elastically brought into contact with the signal connection contact 3 on the circuit board 1 through the jack 11 to form an electrical connection. That is, the second housing 211 may be connected to the first housing 13, the insulator 212 may be connected to the first housing 13, or both the second housing 211 and the insulator 212 may be connected to the first housing 13.

In the present embodiment, the insulator 212 is interference-fitted into the second housing 211, so that the insulator 212 is fixed to the second housing 211 by means of interference fit, wherein part of the structure of the insulator 212 is located inside the second housing 211, and the rest of the structure protrudes from the inside of the second housing 211 to be located outside the second housing 211.

Further, the insulator 212 and/or the second housing 211 are formed with the first connection portion 2122, that is, the first connection portion 2122 may be formed on the insulator 212, may be formed on the second housing 211, or may be provided on both the insulator 212 and the second housing 211. The first housing 13 is provided with a second connecting portion 131 for matching with the first connecting portion 2122. The first connection portions 2122 and the second connection portions 131 are provided in plurality and correspond to each other one by one.

Specifically, the first connection portion 2122 is a protruding structure formed on the insulator 212 and/or the second housing 211, and in the present embodiment, the protruding structure is a wedge-shaped block; the second connecting portion 131 is a card slot formed in the first housing 13.

In order to further improve the connection stability between the plug 20 and the socket 10, referring to fig. 1 and 6, a fixing portion 132 may be further disposed on the first housing 13, and the fixing portion 132 is used for fixing the second housing 211 when the fixing member 21 is connected to the first housing 13. Specifically, the fixing portion 132 is an elastic hook formed at the position of the insertion opening 11 of the first housing 13 and can be pressed against the second housing 211 when the fixing member 21 is coupled to the first housing 13. The elastic hook is elastically deformed to allow the plug 20 to pass through when the plug 20 is inserted into the socket 10, and is restored to fix the second housing 211 after the plug 20 is completely inserted. In addition, the fixing portion 132 can ensure good electrical conductivity between the second housing 211 and the first housing 13.

In some specific embodiments, the first housing 13 and the second housing 211 are shielding cases with signal shielding function, and both can be made of stainless steel sheet metal with a certain thickness.

In some embodiments, the number of the elastic connection members 22 is plural, and the elastic connection members are divided into a plurality of groups, each group including at least one elastic connection member 22; the number of the insulation grooves 2121 is plural, and one elastic connection member 22 is disposed in each insulation groove 2121. Referring to fig. 3, 7-10, the elastic connecting members 22 are divided into 4 groups, each group including two elastic connecting members 22,

referring to fig. 9-12, the plug 20 further includes a shielding spacer 23, and the shielding spacer 23 is fixedly connected to the fixing member 21 for isolating each set of the elastic connection members 22. The shielding partition plate 23 can be fixed together with the second housing 211, and the shielding partition plate and the second housing can be integrally formed in an injection molding mode, so that the shielding effect is improved, and the stability of signal transmission is ensured.

Specifically, the shielding partition 23 is a metal plate that is bent to form a plurality of isolation spaces 231, and a set of elastic connection pieces 22 is provided in each of the isolation spaces 231. The metal plate can be a whole piece or formed by splicing a plurality of pieces. The shape of the shielding spacers 23 may be wavy as shown in fig. 11-12.

Further, the shielding spacer 23 has a second elastic contact portion 232 thereon, and the second elastic contact portion 232 is used for elastically connecting the ground connection contact 4 on the circuit board 1, so that the shielding spacer 23 also has a grounding function.

In order to ensure insulation between the elastic connection member 22 and the shielding spacer 23, in conjunction with fig. 8 and 10, a partial structure of the insulator 212 may be provided between the shielding spacer 23 and the elastic connection member 22.

Further, all the elastic connection members 22 of each group of elastic connection members 22 are bent in the same direction, and the elastic connection members 22 of adjacent groups are bent in opposite directions. Therefore, the horizontal direction force of the elastic connecting pieces 22 acting on the circuit board 1 is opposite, so that the horizontal direction force can be counteracted, the connection stability is enhanced, and the isolation between the adjacent groups of elastic connecting pieces 22 is facilitated.

Referring to fig. 4, 13-15, the first elastic contact portion 222 has an arc-shaped structure, so that the first elastic contact portion 222 is elastically contacted with the circuit board 1. Further, the shape of the elastic connection member 22 may be S-shaped (see fig. 15), C-shaped, or L-shaped (see fig. 14). The first elastic contact portion 222 may be C-shaped as shown in fig. 13. These shapes present circular and obtuse angle connections in the signal path, without sharp and right angle turns, which is beneficial to reduce signal reflections. It should be noted that the S-shape, C-shape or L-shape is a general structural outline of the elastic connecting element 22, and the actual elastic connecting element 22 may have reasonable structural differences from the corresponding letter, therefore, the present invention does not limit the shape of the elastic connecting element 22 to be completely the same as the letter shape.

In order to reduce the connection length, the design of the elastic connection element 22 in terms of mechanical structure requires that the length be as small as possible, so that it has both a sufficiently large contact pressure and a sufficient stroke range, ensuring the reliability and stability of the connection. The design requirements of the resilient connection 22 in terms of circuitry are: it is ensured that the characteristic impedance of the inner conductor 2 and the resilient connecting element 22 in the cable connector matches the characteristic impedance of the cable.

Referring to fig. 1, 5-6, when the fixing member 21 is connected to the socket 10, the entire plug 20 is located in the first housing 13. Therefore, the first shell 13 and the second shell 211 can wrap and shield the elastic connecting piece 22 in all directions, so that radiation can not be formed to the outside when high-speed signals pass through, and electromagnetic leakage and interference are avoided.

The cable connector of this embodiment is also designed with enhanced design in terms of electromagnetic shielding. The first housing 13 and the second housing 211 in the cable connector complete the shielding to the outside. In the cable connector, the number of groups of the elastic connecting pieces 22 in the plug 20 is the same as the number of data channels in the cable, and in order to prevent signal crosstalk between the channels, the left and right sides and the rear of each group of the elastic connecting pieces 22 are provided with shielding partitions 23, so that the elastic connecting pieces 22 in different groups are isolated from each other. As shown in fig. 16 in combination with fig. 11 and 12, to simplify the design of the shield separator 23, only one corrugated metal plate may be used to isolate the four sets of elastic connecting members 22, with a second elastic contact portion 232 around each set of elastic connecting members 22 on average. The circuit board is correspondingly provided with a signal connecting contact 3 and a grounding connecting contact 4. The position of the shielding spacer 23 is illustrated in fig. 16. The signal connection contacts 3 and the ground connection contacts 4, also called gold fingers, are a type of surface gold plated pads or contacts on the circuit board, which are distinguished herein by their function.

The signal connection contacts 3 of each set of elastic connection members 22 and the ground connection contacts 4 of the second elastic contact portions 232 (also called ground portions) are distributed in a delta shape. By providing the shape of the shielding spacer 23 as described above, the number of ground portions on the shielding spacer 23 is increased, and shielding between each data channel can be further enhanced.

In order to reduce the inductive coupling between two sets of elastic connecting members 22, the spatial arrangement of two adjacent sets of elastic connecting members may be further adjusted, referring to fig. 17-18, each set of elastic connecting members includes two elastic connecting members 22 distributed at intervals along the spacing direction; the angle range of the interval direction of any two adjacent groups of elastic connecting pieces is 85-95 degrees. The optimal value is 90 degrees, namely the spacing directions of any two adjacent groups of elastic connecting pieces are mutually perpendicular or approximately perpendicular.

As shown in fig. 18, the cable connector is provided with four sets of elastic connecting members, each set comprising two elastic connecting members 22, the spacing directions of the four sets of elastic connecting members are respectively denoted as a1, a2, a3 and a4, the spacing direction a1 is perpendicular to the spacing direction a2 and the spacing direction a4, and the spacing direction a3 is perpendicular to the spacing direction a2 and the spacing direction a 4. Referring to fig. 19, the shielding spacer 23 is correspondingly shaped like a cross spacer, forming four isolated spaces 231. In other embodiments, the cable connector may be provided with more sets of elastic connectors, and accordingly the shielding partition 23 also forms more isolation spaces 231. Those skilled in the art can develop the inventive concept accordingly.

Based on the above description of the cable connector, the present embodiment further provides an electronic device, which includes the circuit board 1, the cable 5 and the cable connector of the present embodiment, the inner conductor 2 of the cable 5 is welded to the fixing portion 221, the first housing 13 of the cable connector is fixed to the circuit board 1 through the connecting portion 12, and the plug 20 of the cable connector is plugged into the socket 10.

In some embodiments, the fixing member 21 is configured to be capable of being connected with the shielding layer of the cable 5 in a sealing manner, specifically, the shielding layer on the outer surface of the cable 5 is connected with the second housing 211 in a sealing manner, so that the shielding layer on the outer surface of the cable 5 and the second housing 211 can be integrated into a whole, no gap is left between the two, and the shielding effect is ensured to the maximum extent. If some processes cannot meet the requirement that no gap is left between the two, the maximum sealing can be performed based on the current process, and if other design requirements are made on the shielding layer on the outer surface of the cable 5, the shielding layer on the outer surface of the cable 5 and the second shell 211 can be at least partially sealed.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A cable connector, comprising:

a socket (10), the socket (10) having a socket (11) and a connecting portion (12) for connecting a circuit board (1);

a plug (20), said plug (20) comprising a fixed member (21) and a resilient connecting member (22); the elastic connecting piece (22) comprises a fixing part (221) and a first elastic contact part (222) connected with the fixing part (221), and the fixing part (221) is fixedly connected with the fixing piece (21) and is used for connecting the inner conductor (2) of the cable (5);

the fixing piece (21) can be connected with the socket (10), and the first elastic contact part (222) passes through the jack (11) to be in elastic contact with the signal connection contact (3) on the circuit board (1) to form electric connection.

2. Cable connector according to claim 1, wherein the socket (10) comprises a first housing (13), the socket (11) and the connecting portion (12) each being formed on the first housing (13);

the fixing piece (21) can be connected with the first shell (13), and the first elastic contact part (222) penetrates through the socket (11) to be in elastic contact with the signal connection contact (3) on the circuit board (1) to form electric connection.

3. The cable connector according to claim 2, wherein the fixing member (21) comprises a second housing (211) and an insulator (212), one end of the insulator (212) is fixed in the second housing (211), an insulating groove (2121) is formed in the insulator (212), and the elastic connecting member (22) is inserted into the insulating groove (2121);

the second housing (211) and/or the insulator (212) can be connected to the first housing (13) and the first elastic contact section (222) is elastically contacted to the signal connection contact (3) on the circuit board (1) through the socket (11) to form an electrical connection.

4. The cable connector according to claim 3, wherein said insulator (212) is interference fitted within said second housing (211).

5. The cable connector according to claim 3, wherein the insulator (212) and/or the second housing (211) has a first connecting portion (2122) formed thereon, and the first housing (13) has a second connecting portion (131) formed thereon for mating connection with the first connecting portion (2122).

6. The cable connector according to claim 5, wherein the first connecting portion (2122) is a protrusion formed on the insulator (212) and/or the second housing (211), and the second connecting portion (131) is a slot opened on the first housing (13).

7. The cable connector according to claim 3, wherein said first housing (13) has a fixing portion (132) thereon, said fixing portion (132) being adapted to fix said second housing (211) when said fixing member (21) is coupled with said first housing (13).

8. Cable connector according to claim 7, wherein said fixing portion (132) is an elastic hook formed at a position of a socket (11) of said first housing (13) and capable of pressing on said second housing (211) when said fixing member (21) is connected with said first housing (13).

9. Cable connector according to claim 3, wherein said elastic connecting members (22) are plural in number and divided into plural groups each fixedly connected to said fixing member (21), each group including at least one of said elastic connecting members (22);

the number of the insulation grooves (2121) is multiple, and one elastic connecting piece (22) is arranged in each insulation groove (2121).

10. Cable connector according to claim 9, wherein said plug (20) further comprises a shielding spacer (23), said shielding spacer (23) being fixedly connected to said fixing member (21) for isolating each set of resilient connecting members (22).

11. Cable connector according to claim 10, wherein said shielding spacer (23) is a metal plate bent to form a plurality of isolation spaces (231), a set of said elastic connectors (22) being provided in each of said isolation spaces (231).

12. Cable connector according to claim 10, wherein said shielding spacer (23) has a second resilient contact portion (232) thereon, said second resilient contact portion (232) being adapted to resiliently contact a ground connection contact (4) on said circuit board (1).

13. Cable connector according to claim 10, wherein a part of the structure of the insulator (212) is located between the shielding spacer (23) and the resilient connecting member (22).

14. Cable connector according to claim 9, wherein all the resilient connectors (22) of each group of resilient connectors (22) are bent in the same direction and the resilient connectors (22) of adjacent groups are bent in opposite directions.

15. Cable connector according to claim 9, wherein each set of resilient connecting elements comprises two resilient connecting elements (22) spaced apart in a spacing direction;

the angle range of the interval direction of any two adjacent groups of elastic connecting pieces is 85-95 degrees.

16. Cable connector according to claim 2, wherein the entire plug (20) is located within the first housing (13) when the fixing member (21) is connected to the socket (10).

17. The cable connector according to claim 1, wherein said first resilient contact portion (222) has an arcuate configuration.

18. Cable connector according to claim 17, wherein the resilient connecting element (22) is S-shaped, C-shaped or L-shaped.

19. An electronic device, characterized in that the electronic device comprises: circuit board (1), electrical cable (5) and cable connector according to any one of claims 1-18;

the inner conductor (2) of the cable (5) is connected with the fixing part (221), and the connecting part (12) of the socket (10) is connected with the circuit board (1).

20. An electronic device as claimed in claim 19, characterized in that the fixing member (21) is arranged to be sealingly connectable with a shielding layer of the electric cable (5).