CN116260014B - Electric connector and shielding structure - Google Patents

Abstract

The invention discloses an electric connector and a shielding structure, which relate to the technical field of electric connectors, and the electric connector comprises a main plastic shell, wherein a terminal is arranged on the main plastic shell and consists of a plurality of signal pins and ground pins, and at least one ground pin is arranged between two adjacent signal pins; the electric connector shielding structure comprises a main body plastic shell, wherein a mounting groove for pushing the shielding part into connection is formed in the main body plastic shell, the shielding part comprises two mounting plates, and a sliding plate is fixed on one side, opposite to the mounting plates, of the shielding structure. According to the electric connector and the shielding structure, each connecting component on the shielding piece is connected with each ground pin on the terminal respectively, and through the contact between each connecting component on the shielding piece and the ground pin respectively, the ground loop path is reduced, the shielding structure is formed, so that the mutual interference between differential pairs is minimized, the crosstalk resonance is reduced, and the SI performance is improved.

Description

Electric connector and shielding structure

Technical Field

The invention relates to the technical field of electric connectors, in particular to an electric connector and a shielding structure.

Background

Besides meeting general performance requirements, the electric connector has the special important requirements that the electric connector has to achieve good contact, reliable work and convenient maintenance, and whether the work reliability directly affects the normal work of an aircraft circuit relates to the security risk of the whole host machine.

With the development of technology and the deep development of big data age, the requirements of industry on the performance of connectors are higher and higher, and correspondingly, the requirements on signal loss and related interference resistance capability are higher and higher, especially to PCIE6.0, the requirements of the existing structure cannot be met, and therefore, an electric connector and a shielding structure are provided.

Disclosure of Invention

The present invention is directed to an electrical connector, which solves the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions: an electric connector comprises a main body plastic shell, wherein a terminal is arranged on the main body plastic shell, the terminal consists of a plurality of signal pins and ground pins, and at least one ground pin is arranged between two adjacent signal pins;

the electric connector shielding structure comprises a shielding piece, wherein a mounting groove for pushing and connecting the shielding piece is formed in the main body plastic shell, the shielding piece comprises two mounting plates, sliding plates are fixed on one opposite sides of the two mounting plates, and a plurality of groups of connecting assemblies for contact connection with ground needles are arranged between the two sliding plates;

the connecting assembly comprises mounting blocks magnetically connected to the two sliding plates, fixing blocks are fixed to the two mounting blocks, insertion holes convenient for the two fixing blocks on the connecting assembly to be detached are formed in the ground needle, and an extrusion assembly used for pushing the extrusion of the two mounting blocks and an identification assembly used for identifying the state of the connecting assembly after the connection are arranged between the two mounting blocks.

Preferably, one end of each of the two fixing blocks, which is far away from each other, is fixed with an arc-shaped protrusion which is prevented from falling off after being installed.

Preferably, the extrusion assembly comprises a plurality of sleeves and slide bars which are respectively fixed at opposite ends of the two mounting blocks, one end of each slide bar is respectively and slidably connected to the sleeve, and a connecting spring for connecting the slide bars is arranged in each sleeve.

Preferably, the identification component comprises a support frame and a mounting frame which are arranged between two mounting blocks, the support frame and the mounting frame are respectively fixed with one ends of the two mounting blocks, one side of the support frame is fixedly provided with a circular mounting box through a connecting rod, the circular mounting box is rotationally connected with a circular identification plate, a parting line is arranged on one side of the circular identification plate and is divided into two sections through the parting line, a rotating shaft is rotationally connected to the support frame, one end of the rotating shaft penetrates through the inside of the circular mounting box and is fixed with the circular identification plate, a rotating component used for rotating the rotating shaft is arranged on the mounting frame, and a first limiting component used for limiting after rotating the rotating shaft is arranged on the support frame.

Preferably, the two divided interval surfaces of the circular marking plate are coated with different colors, and the circular mounting box is provided with an opening which is convenient for identifying the colors on the circular marking plate.

Preferably, the rotating assembly comprises a circular plate fixed on the rotating shaft, a plurality of square blocks are fixed on the circular plate in an annular array, strip-shaped plates are connected to the mounting frame in a sliding mode, a plurality of pushing plates for pushing against the square blocks are fixedly arranged on the strip-shaped plates, a first inclined plane is formed in the upper end of each pushing plate, and a plurality of first springs for connecting the strip-shaped plates are connected to the inner portion of the mounting frame.

Preferably, the first spacing subassembly is including fixing the disc in pivot one end, a plurality of C type spacing grooves have been seted up to annular array on the disc, be connected with the stopper that sets up with C type spacing groove mutual match on the support frame through first promotion subassembly.

Preferably, the first pushing component comprises a fixed plate fixed on the supporting frame, a plurality of first T-shaped rods are connected to the fixed plate in a sliding mode, one ends of the first T-shaped rods are fixed to the limiting blocks, second springs are sleeved on the side walls of the first T-shaped rods, and the limiting blocks are arranged in a limiting mode against the rotating shafts after the rotating under the action of elastic force of the second springs.

Preferably, the mounting plate comprises a plurality of assembly plates, two adjacent assembly plates are fixedly connected through a sliding component and a second limiting component, the sliding component comprises a T-shaped sliding groove and a T-shaped sliding block which are respectively arranged on one side of the two adjacent assembly plates, and the T-shaped sliding block is slidably connected to the T-shaped sliding groove.

Preferably, the second limiting assembly comprises two limiting pins fixed on the assembling plates, the adjacent assembling plates are connected with clamping plates through second pushing assemblies, and the upper ends and the lower ends of the clamping plates are provided with second inclined planes.

Preferably, the second pushing assembly comprises a square plate fixed on the assembling plate, a plurality of second T-shaped rods are connected to the square plate in a sliding mode, one end of each second T-shaped rod is fixed to the clamping plate, and a third spring is sleeved on the side wall of each second T-shaped rod.

Compared with the prior art, the invention has the beneficial effects that:

according to the electric connector and the shielding structure, each connecting component on the shielding piece is connected with each ground pin on the terminal respectively, and through the contact between each connecting component on the shielding piece and the ground pin respectively, the ground loop path is reduced, the shielding structure is formed, so that the mutual interference between differential pairs is minimized, the crosstalk resonance is reduced, and the SI performance is improved.

Drawings

FIG. 1 is a schematic diagram of the overall outline structure of the present invention;

FIG. 2 is a schematic view of a mounting groove structure of the present invention;

FIG. 3 is a schematic diagram of the terminal results of the present invention;

FIG. 4 is a schematic view of the structure of the connecting assembly of the present invention after connecting with a ground needle;

FIG. 5 is a schematic view of a shield and compression assembly according to the present invention;

FIG. 6 is a schematic diagram of a sliding assembly, a second limiting assembly and a second pushing assembly according to the present invention;

FIG. 7 is a schematic diagram of an identification component of the present invention;

FIG. 8 is a schematic view of a rotating assembly according to the present invention;

FIG. 9 is a schematic view of a first spacing component and a first pushing component according to the present invention;

FIG. 10 is an enlarged view of FIG. 5 at A;

FIG. 11 is an enlarged view of FIG. 6 at B;

FIG. 12 is an enlarged view of FIG. 7 at C;

FIG. 13 is an enlarged view of FIG. 8 at D;

FIG. 14 is a graph comparing the near-end crosstalk performance of the present invention structure with that of a conventional design;

fig. 15 is a graph comparing far-end crosstalk performance of the inventive structure with that of a conventional design.

In the figure: 1-a main body plastic housing; a 2-terminal; 201-ground needle; 202-signal pin; 3-mounting grooves; 4-shielding; 401-mounting plates; 4011-an assembly plate; 402-skateboards; 501-mounting blocks; 502-a fixed block; 503-arc-shaped protrusions; 504-jack; 601-a sleeve; 602-a slide bar; 701-T-shaped sliding groove; 702-T-shaped sliders; 801-a limiting pin; an 802-cardboard; 803-a second ramp; 901-square plate; 902-a second T-bar; 903—a third spring; 1001-supporting frame; 1002-circular mounting box; 1003-opening; 1004-a circular identification plate; 1005-parting line; 1006-a spindle; 1101-circular plate; 1102-square blocks; 1103-mounting frame; 1104-a strip plate; 1105-push plate; 1106-first ramp; 1107—a first spring; 1201-discs; 1202-C type limit grooves; 1203-limiting block; 1301-fixing plate; 1302-a first T-bar; 1303-a second spring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1-15, an electrical connector and shielding structure in the drawings includes a main plastic housing 1, wherein a terminal 2 is provided on the main plastic housing 1, the terminal 2 is composed of a plurality of signal pins 202 and ground pins 201, and at least one ground pin 201 is provided between two adjacent signal pins 202;

the electric connector shielding structure comprises a shielding piece 4, wherein a mounting groove 3 for pushing and connecting the shielding piece 4 is formed in a main body plastic shell 1, the shielding piece 4 comprises two mounting plates 401, sliding plates 402 are fixed on the opposite sides of the two mounting plates 401, and a plurality of groups of connecting components for contacting and connecting with a ground needle 201 are arranged between the two sliding plates 402;

the connecting assembly comprises mounting blocks 501 magnetically connected to the two sliding plates 402, fixing blocks 502 are fixed on the two mounting blocks 501, insertion holes 504 which are convenient for the two fixing blocks 502 on the connecting assembly to be disassembled are formed in the ground needle 201, and an extrusion assembly for pushing and extruding the two mounting blocks 501 and an identification assembly for identifying the state of the connecting assembly after the connecting assembly is connected are arranged between the two mounting blocks 501;

what needs to be explained here is: each connecting component on the shielding piece 4 is respectively connected with each ground pin 201 on the terminal 2, and through the contact of each connecting component on the shielding piece 4 with the ground pin 201, the ground loop path is reduced, a shielding structure is formed, so that the mutual interference between differential pairs is minimized, the crosstalk resonance is reduced, and the SI performance is improved;

what needs to be explained here is: the magnetic connection between the mounting block 501 and the slider 402 facilitates the sliding adjustment of the connection assemblies, which respectively align the connection assemblies with the insertion holes 504 on the ground pins 201, and thus the process of mounting the shielding member 4 is more flexible.

One end of each of the two fixing blocks 502, which is far away from each other, is fixed with an arc-shaped bulge 503 which is prevented from falling off after being installed;

what needs to be explained here is: during the connection of the connection assembly to the ground pin 201, the circular-arc-shaped protrusion 503 is located at the inner side of the ground pin 201, so that the shielding member 4 is not easy to fall off after being mounted.

The extrusion assembly comprises a plurality of sleeves 601 and slide bars 602 which are respectively fixed at opposite ends of the two mounting blocks 501, one end of each slide bar 602 is respectively and slidably connected to the sleeve 601, and a connecting spring for connecting the slide bars 602 is arranged in each sleeve 601;

what needs to be explained here is: through a plurality of sleeve pipes 601 and slide bars 602, the installation blocks 501 which are close to each other and move after being stressed on the connecting component are guided, and through the connecting springs, the two installation blocks 501 are pushed, so that after the connecting component is connected with the ground needle 201, the two fixed blocks 502 are kept in reliable contact with the inner sides of the jacks 504 respectively, the shielding effect is achieved, the occurrence of resonance in the high-speed transmission process is reduced, and the SI performance is improved.

The identification component comprises a support frame 1001 and a mounting frame 1103 which are arranged between two mounting blocks 501, the support frame 1001 and the mounting frame 1103 are respectively fixed with one ends of the two mounting blocks 501, one side of the support frame 1001 is fixedly provided with a circular mounting box 1002 through a connecting rod, the circular mounting box 1002 is rotationally connected with a circular identification plate 1004, one side of the circular identification plate 1004 is provided with a parting line 1005 and is partitioned into two sections through the parting line 1005, the support frame 1001 is rotationally connected with a rotating shaft 1006, one end of the rotating shaft 1006 penetrates into the circular mounting box 1002 and is fixed with the circular identification plate 1004, the mounting frame 1103 is provided with a rotating component for rotating the rotating shaft 1006, and the support frame 1001 is provided with a first limiting component for limiting the rotating shaft 1006 after rotating; the surfaces of the two sections of the circular marking plate 1004 which are divided are coated with different colors, and the circular mounting box 1002 is provided with an opening 1003 which is convenient for identifying the colors on the circular marking plate 1004;

what needs to be explained here is: the connection component drives the circular plate 1101 to rotate unidirectionally in the process of being inserted into the jack 504 in normal connection, the circular marking plate 1004 on the circular mounting box 1002 is driven to rotate through the rotating shaft 1006 in the process of rotating the circular plate 1101, the other section with different colors on the surface of the circular marking plate 1004 is rotated to the opening 1003 through the rotation of the circular marking plate 1004, whether the color of the surface of the circular marking plate 1004 at the opening 1003 on the circular mounting box 1002 changes or not is observed, whether the connection component is inserted into the jack 504 connected to the ground needle 201 normally is judged, and the connection state of the shielding piece 4 and the ground needle 201 is further convenient to judge.

The rotating assembly comprises a circular plate 1101 fixed on a rotating shaft 1006, a plurality of square blocks 1102 are fixed on the circular plate 1101 in an annular array, a strip plate 1104 is connected to the mounting frame 1103 in a sliding manner, a plurality of pushing plates 1105 for propping against the square blocks 1102 are fixedly arranged on the strip plate 1104, a first inclined plane 1106 is formed at the upper end of each pushing plate 1105, and a plurality of first springs 1107 for connecting the strip plates 1104 are connected to the inside of the mounting frame 1103;

what needs to be explained here is: when the two mounting blocks 501 are stressed to shrink, the mounting frame 1103 moves towards the supporting frame 1001, in the moving process, each push plate 1105 on the strip plate 1104 sequentially abuts against each square block 1102, the round plate 1101 is driven to rotate through the abutting action of the push plate 1105 and the square blocks 1102, and when the two mounting blocks 501 are reset under the action of the extrusion assembly, the mounting frame 1103 moves away from the supporting frame 1001, in the moving process, the first inclined planes 1106 on each push plate 1105 abut against the square blocks 1102 respectively, and the strip plate 1104 is pushed to shrink towards the inner side of the mounting frame 1103 through the abutting action of the square blocks 1102 and the first inclined planes 1106.

The first limiting assembly comprises a disc 1201 fixed at one end of a rotating shaft 1006, a plurality of C-shaped limiting grooves 1202 are formed in the disc 1201 in an annular array manner, and a limiting block 1203 which is mutually matched with the C-shaped limiting grooves 1202 is connected to the supporting frame 1001 through a first pushing assembly;

what needs to be explained here is: in the rotating process of the rotating shaft 1006, the disc 1201 is driven to rotate, the limiting block 1203 is pushed to shrink through the C-shaped limiting groove 1202 in the rotating process of the disc 1201, after the rotating shaft 1006 rotates, the limiting block 1203 is pushed to reset and prop against the C-shaped limiting groove 1202 at the corresponding position on the disc 1201 through the first pushing component, and the rotating shaft 1006 and the disc 1201 after rotating are limited through the propping action of the limiting block 1203 and the C-shaped limiting groove 1202, so that the rotating state of the rotating shaft 1006 is kept conveniently.

The first pushing component comprises a fixing plate 1301 fixed on a supporting frame 1001, a plurality of first T-shaped rods 1302 are connected to the fixing plate 1301 in a sliding manner, one end of each first T-shaped rod 1302 is fixed with a limiting block 1203, a second spring 1303 is sleeved on the side wall of each first T-shaped rod 1302, and the limiting block 1203 is in limiting arrangement against a rotating shaft 1006 under the action of the elasticity of each second spring 1303 and the C-shaped limiting groove 1202;

what needs to be explained here is: the forced limiting block 1203 is guided through the fixing plate 1301 and each first T-shaped rod 1302, and the forced limiting block 1203 is convenient to reset through each second spring 1303.

The mounting plate 401 is composed of a plurality of assembly plates 4011, two adjacent assembly plates 4011 are fixedly connected through a sliding component and a second limiting component, the sliding component comprises a T-shaped chute 701 and a T-shaped slide block 702 which are respectively arranged on one side of the two adjacent assembly plates 4011, and the T-shaped slide block 702 is connected to the T-shaped chute 701 in a sliding way;

what needs to be explained here is: the mounting plate 401 is formed by splicing a plurality of assembly plates 4011, so that the length of the mounting plate 401 on the shielding member 4 can be flexibly adjusted according to the length of the terminal 2.

The second limiting component comprises two limiting pins 801 fixed on the assembly plates 4011, the adjacent assembly plates 4011 are connected with clamping plates 802 through second pushing components, and the upper end and the lower end of each clamping plate 802 are provided with second inclined planes 803;

what needs to be explained here is: through T-shaped chute 701 and T-shaped slide block 702, two adjacent assembly plates 4011 are in sliding connection, in the sliding connection process, second inclined plane 803 of clamping plate 802 abuts against limiting pin 801, clamping plate 802 is pushed to shrink through second inclined plane 803 and limiting pin 801, as two assembly plates 4011 continue sliding connection, when clamping plate 802 moves to between two limiting pins 801, clamping plate 802 is pushed to reset and abut against two limiting pins 801 through a second pushing assembly, two assembly plates 4011 after sliding connection are limited through abutting action of clamping plate 802 and two limiting pins 801, and splicing limiting of two adjacent assembly plates 4011 is completed.

The second pushing assembly comprises a square plate 901 fixed on the assembly plate 4011, a plurality of second T-shaped rods 902 are connected to the square plate 901 in a sliding manner, one end of each second T-shaped rod 902 is fixed with the clamping plate 802, and a third spring 903 is sleeved on the side wall of each second T-shaped rod 902;

what needs to be explained here is: the movement of the catch plate 802 after being stressed is guided by each second T-shaped rod 902 and the square plate 901, and the catch plate 802 after being pushed to move is convenient to return by each third spring 903.

In the scheme, the method comprises the following steps: an electrical connector and shielding structure, comprising the steps of:

a plurality of adjacent assembly plates 4011 are mutually matched through a sliding assembly and a second limiting assembly to be spliced end to end, an installation plate 401 is formed by installation, and a shielding piece 4 is formed by two groups of spliced installation plates 401 and a plurality of groups of connection assemblies between the two installation plates 401;

after the shielding piece 4 is formed, according to the position of each ground pin 201 on the terminal 2, each connecting component on the shielding piece 4 is subjected to sliding adjustment, each connecting component is aligned with an insertion hole 504 on each ground pin 201 respectively, after adjustment is finished, the shielding piece 4 is pushed into the main body plastic shell 1 through the mounting groove 3, in the pushing process, the arc-shaped protrusions 503 of two fixing blocks 502 on each connecting component are respectively abutted against the upper inner wall and the lower inner wall of the insertion hole 504, so that the two fixing blocks 502 on the connecting component are mutually close to each other, and the front ends of the two fixing blocks 502 and the arc-shaped protrusions 503 are inserted into the insertion hole 504 along with the continuous pushing of the pair of shielding pieces 4, the connection of each connecting component on the shielding piece 4 with the ground pin 201 is finished, in the connection process, the arc-shaped protrusions 503 are positioned on the inner side of the ground pin 201, the shielding piece 4 is not easy to fall off after being installed, the pushing and extrusion of the two mounting blocks 501 on the connecting component is carried out, the inner sides of the upper side and lower side of the two fixing blocks 502 are respectively abutted against the upper side and lower side of the insertion hole 504 respectively, the stability of the shielding piece 4 and the ground pin 201 are further improved, the interference between the two adjacent ground pins and the ground pins 201 is reduced, the mutual interference between the two adjacent ground pins is reduced, and the resonance circuit is reduced, and the mutual interference is minimized, and the mutual interference is reduced, and the resonance circuit is reduced;

when the connection assembly on the shielding piece 4 is inserted and connected in the process of inserting the jack 504, when the two installation blocks 501 are stressed and contracted, the installation frame 1103 moves towards the supporting frame 1001, in the process of moving, each push plate 1105 on the strip plate 1104 sequentially abuts against each square block 1102, the round identification plate 1004 on the round installation box 1002 is driven to rotate through the abutting action of the push plate 1105 and the square blocks 1102, and when the two installation blocks 501 are reset under the action of the extrusion assembly, the installation frame 1103 moves away from the supporting frame 1001, in the process of moving, the first inclined plane 1106 on each push plate 1105 abuts against the square blocks 1102 respectively, the strip plate 1104 is pushed to retract towards the inner side of the installation frame 1103 through the abutting action of the square blocks 1102 and the first inclined plane 1106, therefore, in the process of normally connecting the connection assembly and inserting the connection assembly into the jack 504, the round plate 1101 is driven to rotate in one direction, in the process of rotating the round plate 1101, the round identification plate 1004 is driven to rotate through the rotating shaft 1006, the round identification plate 1004 is rotated through the rotating shaft 1004, the other sections with different colors on the surface of the round identification plate 1004 are rotated to the opening 1003, in the opening 1003, the color change of the opening of the round identification plate 1002 is observed, whether the needle is connected with the needle 201 is connected normally, and whether the needle 201 is connected normally or not is connected to the needle 201 conveniently.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The electric connector is characterized by comprising a main plastic shell (1) and a shielding structure applied to the electric connector, wherein a terminal (2) is arranged on the main plastic shell (1), the terminal (2) consists of a plurality of signal pins (202) and ground pins (201), and at least one ground pin (201) is arranged between two adjacent signal pins (202);

the shielding structure comprises a shielding piece (4), wherein a mounting groove (3) for pushing and connecting the shielding piece (4) is formed in the main body plastic shell (1), the shielding piece (4) comprises two mounting plates (401), sliding plates (402) are fixed on one side, opposite to the two mounting plates (401), of each mounting plate, and a plurality of groups of connecting components for being in contact connection with the ground needle (201) are arranged between the two sliding plates (402);

the connecting assembly comprises mounting blocks (501) magnetically connected to the two sliding plates (402), fixing blocks (502) are fixed on the two mounting blocks (501), insertion holes (504) for facilitating insertion of the two fixing blocks (502) on the connecting assembly are formed in the ground needle (201), and an extrusion assembly for pushing and extruding the two mounting blocks (501) and an identification assembly for identifying the state of the connecting assembly after connection are arranged between the two mounting blocks (501);

the identification component comprises a support frame (1001) and a mounting frame (1103) which are arranged between two mounting blocks (501), the support frame (1001) and the mounting frame (1103) are respectively fixed with one ends of the two mounting blocks (501), one side of the support frame (1001) is fixedly provided with a circular mounting box (1002) through a connecting rod, the circular mounting box (1002) is rotationally connected with a circular identification plate (1004), one side of the circular identification plate (1004) is provided with a parting line (1005) and is partitioned into two sections through the parting line (1005), the support frame (1001) is rotationally connected with a rotating shaft (1006), one end of the rotating shaft (1006) penetrates through the inside of the circular mounting box (1002) and is fixed with the circular identification plate (1004), the mounting frame (1103) is provided with a rotating component for rotating the rotating shaft (1006), and the support frame (1001) is provided with a first limiting component for limiting the rotating shaft (1006);

the two divided interval surfaces of the circular marking plate (1004) are coated with different colors, and the circular mounting box (1002) is provided with an opening (1003) which is convenient for identifying the colors on the circular marking plate (1004).

2. An electrical connector as in claim 1 wherein: and one end, away from each other, of each of the two fixing blocks (502) is fixed with an arc-shaped bulge (503) which is prevented from falling off after being installed.

3. An electrical connector as in claim 1 wherein: the extrusion assembly comprises a plurality of sleeves (601) and slide bars (602) which are respectively fixed at opposite ends of the two mounting blocks (501), one end of each slide bar (602) is respectively and slidably connected to each sleeve (601), and a connecting spring for connecting the slide bars (602) is arranged inside each sleeve (601).

4. An electrical connector as in claim 3 wherein: the rotating assembly comprises a circular plate (1101) fixed on a rotating shaft (1006), a plurality of square blocks (1102) are fixed on the circular plate (1101) in an annular array, strip-shaped plates (1104) are connected to a mounting frame (1103) in a sliding mode, a plurality of pushing plates (1105) which are used for propping against the square blocks (1102) are fixedly arranged on the strip-shaped plates (1104), a first inclined surface (1106) is formed in the upper end of each pushing plate (1105), and a plurality of first springs (1107) used for connecting the strip-shaped plates (1104) are connected to the inside of the mounting frame (1103).

5. An electrical connector as in claim 4 wherein: the first limiting assembly comprises a disc (1201) fixed at one end of a rotating shaft (1006), a plurality of C-shaped limiting grooves (1202) are formed in the disc (1201) in an annular array mode, and limiting blocks (1203) which are mutually matched with the C-shaped limiting grooves (1202) are connected to the supporting frame (1001) through the first pushing assembly.

6. An electrical connector as in claim 5 wherein: the first pushing assembly comprises a fixing plate (1301) fixed on a supporting frame (1001), a plurality of first T-shaped rods (1302) are connected to the fixing plate (1301) in a sliding mode, one ends of the first T-shaped rods (1302) are fixed to limiting blocks (1203), second springs (1303) are sleeved on the side walls of the first T-shaped rods (1302), and the limiting blocks (1203) are arranged in a limiting mode against rotating shafts (1006) under the action of elastic force of the second springs (1303).

7. An electrical connector as in claim 6 wherein: the mounting plate (401) is composed of a plurality of assembly plates (4011), two adjacent assembly plates (4011) are fixedly connected through a sliding assembly and a second limiting assembly, the sliding assembly comprises a T-shaped sliding groove (701) and a T-shaped sliding block (702) which are respectively arranged on one side of the two adjacent assembly plates (4011), and the T-shaped sliding block (702) is connected to the T-shaped sliding groove (701) in a sliding mode.

8. An electrical connector as in claim 7 wherein: the second limiting assembly comprises two limiting pins (801) fixed on the assembly plates (4011), clamping plates (802) are connected to the adjacent assembly plates (4011) through second pushing assemblies, and second inclined planes (803) are formed in the upper end and the lower end of each clamping plate (802).

9. An electrical connector as in claim 8 wherein: the second pushing assembly comprises a square plate (901) fixed on the assembling plate (4011), a plurality of second T-shaped rods (902) are connected to the square plate (901) in a sliding mode, one end of each second T-shaped rod (902) is fixed to the clamping plate (802), and a third spring (903) is sleeved on the side wall of each second T-shaped rod (902).