CN210957190U

CN210957190U - Backplane connector with stable contact and good impedance adaptation

Info

Publication number: CN210957190U
Application number: CN201921446877.8U
Authority: CN
Inventors: 吴鑫
Original assignee: Shenzhen Wande Photoelectric Technology Co ltd
Current assignee: Shenzhen Wande Photoelectric Technology Co ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-07-07
Anticipated expiration: 2029-09-02

Abstract

The utility model discloses a backplane connector with stable contact and good impedance adaptation, including public tip and female tip that plug-in type connects each other, public tip is equipped with groove type terminal and sword type terminal, and female tip includes slice body, shield, female end circuit board, the female end casing that supports the slice body, and alternately arranges the signal terminal pair and the ground terminal that set up; the knife-shaped terminal is designed into a flat streamline phoenix-eye-shaped structure, the maximum width is less than 0.31mm, the length is greater than 1.5mm, and the defects of low impedance adaptation and poor guiding of the existing terminal with large width and short length are overcome; and the contact part of the grounding terminal is designed into a D-shaped side wall contact and edge contact structure, so that the risk probability of non-contact occurrence of the existing single-point structure and potential factors of blocking and falling are avoided.

Description

Backplane connector with stable contact and good impedance adaptation

Technical Field

The utility model relates to an electron and communication field, in particular to backplane connector with stable contact and good impedance adaptation.

Background

In a connector system, when devices are mated with each other, in order to ensure the reliability of connection, each connection subsystem must be able to ensure connection with good reliability. The contact of single point on 0.2mm cross-section width of current structure mode has the defect that the contact landing, life-span are low, and this kind of contact on the cross-section arris causes the card easily to die, and the poor condition of contact quality causes contact failure easily and causes the distortion of high-speed signal transmission.

In order to solve the problem that the prior contact mode takes an edge with the width of 0.2mm as a contact part, the risk of falling and blocking of an elastic arm is extremely high, 75% of area contact is calculated when the edge of the contact part of another device in contact with the elastic arm deflects by 1 degree, only about 50% of area contact is calculated when the edge deflects by 2 degrees, and the elastic arm falls off probably under the conditions of vibration and assembly errors, so that the elastic arm is blocked or is in contact with elements with different functions, and the electric transmission failure is caused. The deflection of the contact part is caused by the fact that the device is formed by metal punch forming, and due to stress and precision factors, according to the existing structure, the stress is difficult to eliminate, and the cost is greatly increased when the forming precision is improved; meanwhile, impedance and crosstalk are very important consideration factors in a high-speed connection system, the quality of electric signal transmission is directly influenced, and the defects of poor impedance adaptation, poor crosstalk and small guiding capability caused by large characteristic width and short guiding of the original pressing plate are urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a backplane connector with stable contact and good impedance adaptation, which is designed into a D-shaped side wall contact and edge contact structure, so as to avoid the risk probability of non-contact occurrence of the existing single-point structure and the potential factors of blocking and falling; the press plate characteristic of the small-size long guide structure is designed, so that the defects of impedance and crosstalk caused by the existing large-size press plate characteristic and the guide problem caused by short guide are improved.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a backplane connector with stable contact and good impedance adaptation comprises a male end part and a female end part which are connected in an inserting mode, wherein the male end part is provided with a groove-type terminal and a blade-type terminal, and the female end part comprises a wafer, a shielding body, a female end circuit board, a female end shell for supporting the wafer, signal terminal pairs and grounding terminals which are arranged alternately; the knife-shaped terminal is designed into a flat streamline phoenix-eye-shaped structure, the maximum width of the knife-shaped terminal is less than 0.31mm, and the length of the knife-shaped terminal is more than 1.5 mm;

the female end shell is provided with grounding holes and signal holes which are respectively inserted with the groove-shaped terminals and the knife-shaped terminals in an array manner on one side opposite to the male end part, and plastic rectangular columns are arranged among the grounding holes in the same row; the sheet bodies are inserted into the L-shaped limiting pieces and are connected in an extruding manner to realize the limiting and fixing of each sheet body;

the signal contact part of the signal terminal pair is bent and extends into the signal hole, and when the knife-shaped terminal is inserted into the signal hole, the knife-shaped terminal is tightly propped between the inner wall of the signal hole and the convex surface of the signal contact part; the grounding contact part of the grounding terminal comprises elastic wall matrixes which are symmetrically arranged, and edge contact elastic walls and D-shaped elastic walls which are arranged on the elastic wall matrixes, wherein the D-shaped elastic walls are arranged on one side opposite to the plastic rectangular column, and the multi-point convex parts are butted with the plastic rectangular column and the groove-shaped terminal; the raised part of the edge contact elastic wall is positioned on one side of the plastic rectangular column and elastically abutted against the top end of the side edge of the groove-shaped terminal.

More preferably: and the grounding contact part of the grounding terminal is provided with a grounding elastic body which is abutted with the adjacent shielding body on the back surface of the D-shaped structure, and the grounding elastic body is positioned between the two elastic wall matrixes.

More preferably: the grounding contact parts on two sides of the grounding terminal are both set to be single D-shaped end parts, and the grounding contact parts in the middle are set to be double D-shaped end parts.

More preferably: female end casing with the body of flake is connected through the semi-enclosed formula that upper and lower both ends cup jointed, the upper and lower both ends symmetry that the body of flake is located female end casing one side is provided with the plastic step, the plastic step is the setting of L type, and its right angle face sets up female end casing back to, the embedded groove that is used for the vertical end embedding of plastic step is all offered at the position relative with every plastic step to female end casing, be provided with in the embedded groove with the relative elastomer of the horizontal end of plastic step, and the horizontal end bending of elastomer towards the plastic step.

More preferably: the sheet body is provided with a plurality of rubber columns which are used for inserting and limiting with the shielding body on the plane of the shielding body opposite to the sheet body.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does:

1. according to the grounding terminal, the contact part of the grounding terminal is designed into a D-shaped side wall contact and edge contact structure, so that the risk probability of non-contact of the existing single-point structure and potential factors of jamming and falling are avoided;

2. this application sword type terminal design is flat streamline phoenix eye shape structure, and the maximum width is less than 0.31mm, and length is greater than 1.5mm, has avoidd the big and short impedance adaptation of length of current width low with the poor defect of direction.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural view of a male end portion in the embodiment;

FIG. 3 is a schematic structural view of a female end portion in the embodiment;

FIG. 4 is a schematic structural diagram of a shield according to an embodiment;

fig. 5 is a composition diagram of a signal terminal pair and a ground terminal in the embodiment;

fig. 6 is a schematic structural diagram of a wafer in an embodiment.

Reference numerals: 1. a male end portion; 2. a female end portion; 3. a groove-type terminal; 4. a blade terminal; 5. a sheet body; 6. a shield; 7. a pair of signal terminals; 71. a signal contact portion; 72. a signal tail; 73. a signal body section; 8. a ground terminal; 81. a ground contact; 811. a bullet wall substrate; 812. the edge contacts the elastic wall; 813. a D-shaped bullet wall; 82. a ground tail; 83. a ground body portion; 9. a female end housing; 91. a ground hole; 92. a signal aperture; 10. a limiting sheet; 11. A grounding elastic body; 12. plastic step; 13. a groove is embedded; 14. an elastic rubber body; 15. a rubber column; 16. inserting the column; 17. the round edge is convex; 18. an equilateral triangle spring plate; 19. and (4) columnar bulges.

Detailed Description

The following provides a more detailed description of the present invention with reference to the accompanying drawings.

Referring to fig. 1 to 6, disclosed is a backplane connector with stable contact and good impedance matching, comprising a male end 1 and a female end 2 which are connected with each other in a plug-in manner, wherein the male end 1 is provided with a male end circuit board, a groove-type terminal 3 and a blade-type terminal 4, the female end 2 comprises a wafer 5, a shield 6, a female end circuit board, a female end housing 9 for supporting the wafer 5, and signal terminal pairs 7 and ground terminals 8 which are alternately arranged, the female end housing 9 is provided with a ground hole 91 and a signal hole 92 which are respectively inserted into the groove-type terminal 3 and the blade-type terminal 4 in an array manner at one side opposite to the male end 1, the ground hole 91 and the signal hole 92 in the same row are alternately arranged, and a plastic rectangular column is arranged between the adjacent ground holes 91, specifically, the existing groove-type terminal 3 and blade-type terminal 4 are arranged, the groove-type terminals 3 and the blade-type terminals 4 in adjacent rows are arranged in parallel in a staggered manner, and the specific arrangement manner is as shown in the figure, so that the corresponding arrangement of the grounding holes 91 and the signal holes 92 also presents a staggered parallel arrangement in adjacent rows.

In this embodiment, a single connector set is composed of the sheet 5, the shield 6, the pair of signal terminals 7, and the ground terminal 8, and a plurality of connector sets are fixed to the female-end housing 9 and then connected to the female-end circuit board to form a connector.

In a single connector group, the signal terminal pairs 7 and the ground terminals 8 are arranged alternately, the signal terminal pairs 7 and the ground terminals 8 are both composed of contact parts, tail parts connected with the female end circuit board and body parts extending between the contact parts and the tail parts, the signal contact parts 71 of the signal terminal pairs 7 are bent and extend into the signal holes 92, and when the blade-shaped terminals 4 are inserted into the signal holes 92, the blade-shaped terminals are tightly abutted between the inner walls of the signal holes 92 and the convex surfaces of the signal contact parts 71; in a practical corresponding design, the pair of signal terminals 7 intended for edge differential coupling is formed by the first and second signal terminals arranged symmetrically together.

The grounding contact part 81 of the grounding terminal 8 is a double-D structure, and is specifically developed, the grounding contact part 81 of the grounding terminal 8 comprises a spring wall base body 811 which is symmetrically arranged, and an edge contact spring wall 812 and a D-shaped spring wall 813 which are arranged on the spring wall base body 811, one end of the spring wall base body 811 is connected with the grounding body part 83, the other end is connected with the edge contact spring wall 812 and the D-shaped spring wall 813, the edge contact spring wall 812 is positioned at the outer side, the D-shaped spring wall 813 is positioned at the inner side, two D-shaped spring walls 813 of the grounding contact part 81 are arranged at one side of a rectangular column of a relative plastic column and are butted with double points of the plastic column, two sides of the end part of the grounding contact part 81 are connected with the outer side wall of the adjacent groove-type terminal 3 at two sides in a single-point extrusion manner, that two sides of the D-shaped spring wall 813 are connected with the outer side wall of the, And elastically abuts against the top end of the side edge of the groove-shaped terminal 3; it should be noted that the ground contact portions 81 on both sides of the ground terminal 8 are each provided as a single D-shaped end portion, the ground contact portion 81 in the middle is provided as a double D-shaped end portion, the ground contact portion 81 of the ground terminal 8 is provided with a ground elastic body 11 abutting against the shield 6 on the adjacent sheet 5 on the back surface of the double D-shaped structure, and the ground elastic body 11 is located between the two elastic wall bases 811.

It is worth to be noted that the blade-shaped terminal 4 is designed to be a flat streamline phoenix-eye-shaped structure, and the maximum width is less than 0.31mm, and the length is more than 1.5 mm.

The application is effectively improved and innovated in connection of parts of the female end shell 9, the sheet 5 and the shield 6, and specifically comprises the following steps:

the shield 6 is limited and fixed:

the sheet body 5 is provided with a plurality of rubber columns 15 which are used for inserting and limiting the shield body 6 on the plane of the shield body 6 opposite to the sheet body;

positioning and fixing of each sheet 5:

the L-shaped limiting pieces 10 are inserted into the L-shaped limiting pieces and connected in an extrusion mode to limit and fix the thin sheets 5, and meanwhile, the limiting pieces 10 are partially protruded from the thin sheets 5 to limit the thin sheets.

The horizontal end of the limiting sheet 10 which is designed in an L shape is located above, the horizontal end of the limiting sheet 10 is provided with an inserting groove along the vertical direction, the upper portion of the sheet body 5 is provided with an inserting cavity at intervals to form an inserting column 16, the inserting column 16 is provided with a round corner which is convenient for inserting the inserting groove to embed into the inserting groove at the inserting head end, the two sides of the inserting column 16 are provided with round edge protrusions 17, the two sides of the inserting groove are provided with vertical cut angles which are convenient for the limiting sheet 10 to pass through the round edge protrusions 17, and the bottoms of the two sides of the.

Fixation of the female housing 9 to the sheet 5:

female end casing 9 is connected through the semi-enclosed formula that upper and lower both ends cup jointed with thin slice body 5, every thin slice body 5 is provided with plastic step 12 in the upper and lower both ends symmetry that is located female end casing 9 one side, plastic step 12 is the setting of L type, and its right angle face sets up female end casing 9 back to, specifically, the horizontal end of plastic step 12 links to each other with thin slice body 5 upper end or lower extreme, the vertical end of plastic step 12 is vertical upwards when thin slice body 5 upper end, and vertical end length is less than horizontal end length, female end casing 9 all offers the embedded groove 13 that is used for the vertical end embedding of plastic step 12 in the position relative with every plastic step 12, be provided with the elastomer relative with the horizontal end of plastic step 12 in the embedded groove 13, and the elastomer is crooked towards the horizontal end of plastic step 12.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims

1. The utility model provides a backplane connector with stable contact and good impedance adaptation, includes public tip and the female tip of mutual plug-in connection, public tip is equipped with recess type terminal and sword type terminal, its characterized in that: the female end part comprises a wafer, a shielding body, a female end circuit board, a female end shell for supporting the wafer, and signal terminal pairs and grounding terminals which are arranged alternately; the knife-shaped terminal is designed into a flat streamline phoenix-eye-shaped structure, the maximum width of the knife-shaped terminal is less than 0.31mm, and the length of the knife-shaped terminal is more than 1.5 mm;

2. The backplane connector of claim 1, wherein the backplane connector has a stable contact and a good impedance match, and wherein: and the grounding contact part of the grounding terminal is provided with a grounding elastic body which is abutted with the adjacent shielding body on the back surface of the D-shaped structure, and the grounding elastic body is positioned between the two elastic wall matrixes.

3. The backplane connector of claim 1, wherein the backplane connector has a stable contact and a good impedance match, and wherein: the grounding contact parts on two sides of the grounding terminal are both set to be single D-shaped end parts, and the grounding contact parts in the middle are set to be double D-shaped end parts.

4. The backplane connector of claim 1, wherein the backplane connector has a stable contact and a good impedance match, and wherein: female end casing with the body of flake is connected through the semi-enclosed formula that upper and lower both ends cup jointed, the upper and lower both ends symmetry that the body of flake is located female end casing one side is provided with the plastic step, the plastic step is the setting of L type, and its right angle face sets up female end casing back to, the embedded groove that is used for the vertical end embedding of plastic step is all offered at the position relative with every plastic step to female end casing, be provided with in the embedded groove with the relative elastomer of the horizontal end of plastic step, and the horizontal end bending of elastomer towards the plastic step.

5. The backplane connector of claim 1, wherein the backplane connector has a stable contact and a good impedance match, and wherein: the sheet body is provided with a plurality of rubber columns which are used for inserting and limiting with the shielding body on the plane of the shielding body opposite to the sheet body.