High-frequency card edge connector terminal positioning structure

Abstract

The present invention discloses a terminal positioning structure for a high-frequency card edge connector, which includes an insulating body and upper row terminals. The upper row terminals are inserted into the upper row terminal receiving grooves. The main body part of the upper row terminals is a multi-segment zigzag extending structure formed by at least one stamping. The contact arm of the upper row terminals and the welding part of the upper row terminals respectively extend reversely from the upper and lower ends of the main body part of the upper row terminals. There is also a lid part made of insulating material, and the lid part is fixedly connected to the insulating body. Contact surfaces matching the outer shape of the main body part of the upper row terminals are respectively formed on the lid part and the side wall of the upper row terminal receiving groove. The contact surfaces on the lid part and the side wall of the upper row terminal receiving groove jointly clamp and position the main body part of the upper row terminals in three mutually perpendicular directions. The present invention effectively improves the high-frequency performance of the connector, is convenient for assembly, and reduces the production cost.

Description

Technical Field

[0001] The present invention relates to a connector, and particularly to a terminal positioning structure for a high-frequency card-edge connector. Background Art

[0002] Traditional card-edge connectors include an insulating body, upper row terminals and lower row terminals. The upper row terminals are composed of upper row ground terminals and upper row signal terminals arranged at intervals. The upper row terminals and the lower row terminals are respectively assembled in the upper row terminal receiving grooves and the lower row terminal receiving grooves of the insulating body. Retaining stubs are respectively formed on the main body parts of the upper row terminals and the lower row terminals. The retaining stubs are positioned by interference with the side walls of the upper row terminal receiving grooves and the lower row terminal receiving grooves through barbed structures. The reflection and signal phase difference of the retaining stubs with barbed structures on such traditional connectors will generate resonance. The longer the retaining stubs are, the lower the resonance frequency is, which causes signal propagation delay and is not conducive to improving the high-frequency performance of the product. Summary of the Invention

[0003] To make up for the above deficiencies, the present invention provides a terminal positioning structure for a high-frequency card-edge connector, which can effectively ensure the reliable retention of the electronic card.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a terminal positioning structure for a high-frequency card-edge connector, including an insulating body and upper row terminals. A plurality of upper row terminal receiving grooves are provided on one side of the insulating body. The upper row terminals are respectively inserted into the upper row terminal receiving grooves in one-to-one correspondence. The upper row terminals include an upper row terminal main body part, an upper row terminal contact arm and an upper row terminal welding part. The upper row terminal main body part is a multi-segment zigzag extension structure formed by at least one stamping. The upper row terminal contact arm and the upper row terminal welding part respectively extend reversely from the upper and lower ends of the upper row terminal main body part. There is also a cover part made of insulating material. The cover part is fixedly connected to the insulating body. Contact surfaces matching the outer shape of the upper row terminal main body part are respectively formed on the cover part and the side walls of the upper row terminal receiving grooves. The contact surfaces on the cover part and the side walls of the upper row terminal receiving grooves jointly clamp and position the upper row terminal main body part in three mutually perpendicular directions.

[0005] As a further improvement of the present invention, the upper row terminal main body part is continuously zigzag bent along the depth direction and the height direction of the upper row terminal receiving groove to form a "concave" structure. A "convex" structure matching one side of the upper row terminal main body part is formed on the bottom surface of the upper row terminal receiving groove. A retaining top block protruding in a rectangular shape or a "concave" structure matching the outer shape of the other side of the upper row terminal main body part is formed on the side of the cover part facing the upper row terminal main body part. The retaining top block structure corresponds to at least one concave structure formed on the side of the upper row terminal main body part facing the cover part.

[0006] As a further improvement of the present invention, at least one holding rib that is vertically offset is provided on each of the two side walls of the upper row terminal receiving groove along its width direction, and the holding ribs respectively abut against the two opposite side wall surfaces of the upper row terminal in the thickness direction.

[0007] As a further improvement of the present invention, an arc-shaped structure protruding towards the lid member is formed at the root where the upper row terminal contact arm is connected to the upper row terminal main body portion, and a vertically extending reinforcing stop surface is formed on the lid member. The outer circular surface of the arc-shaped structure at the root of the upper row terminal contact arm abuts against the reinforcing stop surface on the lid member.

[0008] As a further improvement of the present invention, the upper row terminals include upper row communication terminals and upper row grounding terminals arranged at intervals. A shielding member is also fixedly installed on the insulating body, and a plurality of elastic sheet-shaped shielding member contact portions are provided at intervals on the shielding member. The shielding member contact portions contact the upper row terminal main body portions of the upper row grounding terminals.

[0009] As a further improvement of the present invention, the structure in which the shielding member is fixedly installed on the insulating body is as follows: at least one shielding member holding groove is provided at each of the two ends of one side of the insulating body along the arrangement direction of the upper row terminals. At least one shielding member holding arm is formed at each of the two ends of the shielding member along the arrangement direction of the upper row terminals. A protruding holding card point is provided on the shielding member holding arm. The holding arms at both ends of the shielding member are respectively inserted into the shielding member holding grooves at both ends of the insulating body, and the holding card points on the shielding member holding arms are clamped and fixed with the side walls of the shielding member holding grooves.

[0010] As a further improvement of the present invention, a plurality of shielding holding holes are also provided at intervals on the shielding member along the arrangement direction of the upper row terminals, and a plurality of shielding member holding posts are also provided at intervals on the other side wall of the insulating body along the arrangement direction of the upper row terminals. The shielding member holding posts are respectively inserted into the shielding holding holes on the shielding member one by one, and the shielding member holding posts and the shielding holding holes are fixedly inserted through interference fit or fixed by hot melt bonding or fixed by snap connection.

[0011] As a further improvement of the present invention, the structure in which the lid member is fixedly connected to the insulating body is as follows: at least one protruding insertion arm is provided on the lid member, and a lid insertion groove opposite to the protruding insertion arm is provided on the insulating body. The protruding insertion arms are respectively inserted into the respective lid insertion grooves on the insulating body one by one. At least two rows of shielding holding holes are arranged at intervals in the vertical direction on the shielding member, namely a shielding upper row holding hole and a shielding lower row holding hole. A lid holding hole opposite to the shielding upper row holding hole on the shielding member is also provided on the lid member. The lid holding hole is sleeved outside the shielding member holding post on the insulating body, and the lid member is tightly clamped between the insulating body and the shielding member.

[0012] As a further improvement of the present invention, a lid member receiving groove for receiving the lid member is further provided on one side wall of the insulating body. The lid member is inserted into the lid member receiving groove. Lid positioning ribs are further provided on two opposite side walls of the lid member. The lid positioning ribs tightly abut against two opposite side walls of the lid member receiving groove. Interference bumps are further provided on the side wall of the lid holding hole of the lid member. The interference bumps are in close contact with the side wall of the shielding member holding post.

[0013] As a further improvement of the present invention, a pressing convex bump protruding towards the lid member is provided on the shielding member. The pressing convex bump tightly abuts against the surface of the lid member on the side opposite to the insulating body. A horizontal bending edge is further formed at the upper end of the shielding member. The horizontal bending edge covers the upper side surface of the lid member. Bending edge clamping points protruding outward are provided on the surface of the horizontal bending edge. The protruding bending edge clamping points are in interference positioning with the insulating body.

[0014] The beneficial technical effects of the present invention are as follows: In the present invention, the holding stub structure is cancelled on the main body part of the upper row terminals, and the main body part of the upper row terminals forms a tortuous multi-segment bending structure. The main body part of the upper row terminals is clamped and positioned in three mutually perpendicular directions by the lid member and the side wall of the upper row terminal receiving groove. The upper row terminals are stably positioned and convenient to assemble. Moreover, since the upper row terminals have no barbed stubs, the stub effect of the upper row terminals can be effectively reduced, which is beneficial to the high-frequency performance of the product. In the present invention, the holding top block on the lid member, the "convex" structure on the bottom surface of the upper row terminal receiving groove, and the holding ribs on the side wall in the width direction of the receiving groove together fix and position the main body part of the upper row terminals in three mutually perpendicular directions, ensuring the fixing stability of the upper row terminals. The upper row terminal welding parts of each upper row terminal can fix the components by hot melting. Furthermore, by providing a shielding member, the shielding member contact part is electrically connected to the upper row ground terminal of the upper row terminal, avoiding signal transmission interference of the upper row ground terminal on the upper row signal terminal, further improving the high-frequency performance of the upper row terminals. The shielding member holding post also realizes stable clamping and positioning of the shielding member and the lid member with the insulating body at multiple positions, avoiding the influence of the deformation of the shielding member and the lid member on the electrical contact between the shielding member contact part and the upper row ground terminal and the stable clamping of the upper row terminals. The upper row terminals of the present invention avoid the holding stub design, effectively improving the high-frequency performance of the connector. Moreover, the structure of the upper row terminals is simple, convenient for molding, more material-saving, convenient for assembly, reducing the assembly defect rate and the production cost. Description of the Drawings

[0015] Figure 1 is a three-dimensional exploded view of the present invention;

[0016] Figure 2 is an exploded view of the assembly structure of the upper row terminals and the insulating body;

[0017] Figure 3 is Figure 2Enlarged view of part A;

[0018] Figure 4 is Figure 2 Enlarged view of part B;

[0019] Figure 5 is the exploded view of the self-built and insulated body assembly;

[0020] Figure 6 is the exploded view of the assembly structure of the shielding part, the cover part and the insulated body;

[0021] Figure 7 The first three-dimensional view of the upper row terminals of the present invention;

[0022] Figure 8 The second three-dimensional view of the upper row terminals of the present invention;

[0023] Figure 9 is the schematic diagram of the position state of the upper row terminals of the present invention, the circuit board and the electronic card;

[0024] Figure 10 is the sectional structure diagram of the upper row terminal receiving groove of the insulated body;

[0025] Figure 11 is the sectional structure diagram of the upper row terminal receiving groove of the cover part and the insulated body clamping the upper row terminals;

[0026] Figure 12 is Figure 11 the sectional view in the C-C direction;

[0027] Figure 13 is the sectional view of the interference fixed connection structure of the shielding part holding column, the shielding part and the cover part;

[0028] Figure 14 is the sectional view of the thermal melting fixed connection structure of the shielding part holding column, the shielding part and the cover part;

[0029] Figure 15 is the usage state diagram of the present invention.

[0030] Card edge connector---1 Electronic card---2 Circuit board---3

[0031] Insulated body---11 Upper row terminal receiving groove---111 Retaining rib---1111

[0032] Limit groove for the contact part of the upper row terminals---1112

[0033] First bottom stop surface of the upper row terminal receiving groove---1113

[0034] Upper stop surface of the upper row terminal receiving groove---1114

[0035] Second bottom stop surface of the upper row terminal receiving groove---1115

[0036] Bottom stop surface of the welding part---1116 Lower stop surface of the upper row terminal receiving groove---1117

[0037] Limit groove of the upper row terminal welding part---1118 Shield holding groove---112

[0038] Cover part receiving groove---113 Limit bottom surface of the cover part receiving groove---1131

[0039] Limit upper surface of the cover part receiving groove---1132

[0040] Left and right limit surfaces of the cover part receiving groove---1133

[0041] Upper row shield holding posts---115 Lower row shield holding posts---116

[0042] Upper row terminals---12 Upper row terminal contact arms---121

[0043] Upper row terminal contact part---1211 First holding part of the upper row terminal---122

[0044] Second holding part of the upper row terminal---123 First stop surface of the first holding part---1221

[0045] Second stop surface of the first holding part---1222 Third stop surface of the first holding part---1223

[0046] First stop surface of the second holding part---1231 Second stop surface of the second holding part---1232

[0047] Third stop surface of the second holding part---1233 Fourth stop surface of the second holding part---1234

[0048] Upper row terminal welding part---124 Upper row terminal connecting material cutting place---125

[0049] Shield---14 Shield contact part---141 Shield upper contact arm---1411

[0050] Shield lower contact arm---1412 Shield upper row holding hole---142

[0051] Shield lower row holding hole---143 Shield holding arm---144

[0052] Pressing convex hull---145 Horizontal bending edge---146 Bending edge clamping point---1461

[0053] Grounding piece---15 Cover part---16

[0054] Cover positioning rib --- 161 Interference bump --- 162 Holding top block --- 163

[0055] Cover holding hole --- 164 Specific implementation manner

[0056] Embodiment: A terminal positioning structure for a high-frequency card edge connector includes an insulating body 11 and upper row terminals 12. A plurality of upper row terminal receiving grooves 111 are provided on one side of the insulating body 11. The upper row terminals 12 are inserted into the upper row terminal receiving grooves 111 in one-to-one correspondence. The upper row terminals 12 include an upper row terminal main body portion, an upper row terminal contact arm, and an upper row terminal welding portion 124. The upper row terminal main body portion is a multi-segmented zigzag extension structure formed by at least one stamping. The upper row terminal contact arm and the upper row terminal welding portion 124 extend in opposite directions from the upper and lower ends of the upper row terminal main body portion respectively. There is also a cover member 16 made of insulating material. The cover member 16 is fixedly connected to the insulating body 11. Contact surfaces matching the outer shape of the upper row terminal main body portion are respectively formed on the cover member 16 and the side wall of the upper row terminal receiving groove 111. The contact surfaces on the cover member 16 and the side wall of the upper row terminal receiving groove 111 jointly clamp and position the upper row terminal main body portion in three mutually perpendicular directions.

[0057] After the upper row terminals 12 are inserted into the upper row terminal receiving grooves 111, the upper row terminal contact arms enter the upper row terminal contact portion limiting grooves 1112. When the electronic card 2 is inserted into the upper row terminal contact portion limiting grooves 1112, the upper row terminal 12 contact portions on the upper row terminal contact arms are in electrical contact with the gold fingers on the electronic card 2. The upper row terminal welding portions 124 extend out of the insulating body 11. The upper row terminal welding portions 124 of each upper row terminal 12 are arranged in the same plane and are finally welded to the circuit board 3. The barbed holding stubs structure is cancelled on the upper row terminals 12 of the present invention. By designing the upper row terminal main body portion into a multi-segmented zigzag bending structure and clamping the upper row terminal main body portion through the contact surfaces on the side wall of the receiving groove and the cover member 16, the positioning of the upper row terminal main body portion in the front-back, left-right, and up-down directions is achieved, and the fixed positioning of the upper row terminals 12 in the upper row terminal receiving grooves of the insulating body 11 is realized. This structure avoids using barbed holding stubs for the positioning of the upper row terminals 12, effectively reduces the stub effect, avoids the influence of the holding stubs on the signal propagation of the upper signal terminals, and improves the high-frequency performance of the connector.

[0058] The upper row terminal main body is continuously and tortuously bent along the depth direction and height direction of the upper row terminal receiving groove 111 to form a "concave" structure. A "convex" structure matching one side of the upper row terminal main body is formed on the bottom surface of the upper row terminal receiving groove 111. On one side of the cover member 16 facing the upper row terminal main body, a rectangular protruding holding top block 163 or a "concave" structure matching the outer shape of the other side of the upper row terminal main body is formed. The structure of the holding top block 163 corresponds to at least one concave structure formed on the side of the upper row terminal main body facing the cover member 16. The upper part of the "concave" structure of the upper row terminal main body forms the first holding part 122 of the upper row terminal, and the lower part of the "concave" structure of the upper row terminal main body forms the second holding part 123 of the upper row terminal. Among them, the first holding part 122 of the upper row terminal includes a first holding part first stop surface 1221, a first holding part second stop surface 1222, and a first holding part third stop surface 1223 extending vertically and horizontally. The second holding part 123 of the upper row terminal includes a second holding part first stop surface 1231, a second holding part second stop surface 1232, a second holding part third stop surface 1233, and a second holding part fourth stop surface 1234 extending vertically and horizontally. By forming two holding parts up and down, the upper row terminal 12 is stably clamped and positioned in the upper row terminal receiving groove 111. The above structure realizes the positioning of the upper row terminal 12 in the up-down and front-back directions through the continuous bending of the upper row terminal main body in the depth direction and height direction of the upper row terminal receiving groove 111. The left and right sides of the upper row terminal 12 are limited by the left and right side walls of the upper row terminal receiving groove 111, realizing the stable positioning of the upper row terminal main body. In addition to this bending structure, the upper row terminal main body can also be other bending structures, as long as the clamping and positioning in three mutually perpendicular directions can be achieved.

[0059] On the two side walls of the upper row terminal receiving groove along its width direction, at least one pair of holding ribs 1111 that are vertically offset from each other are respectively provided. The holding ribs 1111 respectively tightly abut against the two opposite side wall surfaces in the thickness direction of the upper row terminal 12. By providing the holding ribs 1111 on the two side walls of the upper row terminal receiving groove 111 in the width direction, the clamping and positioning of the upper row terminal 12 in the thickness direction are realized, and the assembly convenience of the upper row terminal 12 is improved by the vertical offset of the two holding ribs 1111 on both sides.

[0060] At the root where the upper row terminal contact arm is connected to the upper row terminal main body, a circular arc structure protruding towards the cover member 16 is formed. On the cover member 16, a vertically extending strengthening stop surface is formed. The outer circular surface of the circular arc structure at the root of the upper row terminal contact arm tightly abuts against the strengthening stop surface on the cover member 16. When the upper row terminal contact arm of the upper row terminal 12 undergoes elastic deformation, the circular arc structure at its root is limited by the strengthening stop surface on the cover member 16 and is not prone to large deformation, which can avoid its plastic deformation and ensure the strength of the upper row terminal contact arm and the position accuracy of its contact part.

[0061] The upper row of terminals 12 includes upper row communication terminals and upper row grounding terminals arranged at intervals. A shielding member 14 is also fixedly installed on the insulating body 11. A plurality of elastic sheet-like shielding member contact portions 141 are provided on the shielding member 14 at intervals. The shielding member contact portions 141 contact the upper row terminal body portions of the upper row grounding terminals. Through the shielding member contact portions 141, the shielding member 14 is electrically connected to the upper row grounding terminals in each of the upper row of terminals 12, reducing the signal interference of the upper row grounding terminals on the upper row signal terminals. The shielding member contact portions 141 include window structures provided on the shielding member 14 at intervals, upper contact arms 1411 on the shielding member, and lower contact arms 1412 on the shielding member. The window structures on a plurality of shielding members 14 are arranged in one-to-one correspondence with the upper row terminal body portions of the upper row grounding terminals. The upper contact arms 1411 and the lower contact arms 1412 on the shielding member respectively extend obliquely and bent from the upper and lower side walls of the window structures. The end portions of the upper contact arms 1411 and the lower contact arms 1412 on the shielding member respectively closely contact the surface of the connecting material cutting portion of the upper row terminal body portion of the upper row grounding terminal. The connecting material cutting portion is the cutting portion where the upper row of terminals 12 is formed and cut from the strip. This portion is flat and has stable contact with the contact arms of the shielding member 14.

[0062] The structure in which the shielding member 14 is fixedly installed on the insulating body 11 is as follows: At least one shielding member holding groove 112 is provided at each of the two ends of one side of the insulating body 11 along the arrangement direction of the upper row of terminals 12. At least one shielding member holding arm 144 is formed at each of the two ends of the shielding member 14 along the arrangement direction of the upper row of terminals 12. A protruding holding card point is provided on the shielding member holding arm 144. The holding arms at both ends of the shielding member 14 are respectively inserted into the shielding member holding grooves 112 at both ends of the insulating body 11. The holding card points on the shielding member holding arms 144 are clamped and fixed with the side walls of the shielding member holding grooves 112. One or more shielding member holding grooves 112 can be provided at each of the two ends of one side of the insulating body 11 along the terminal arrangement direction. Concave card slot structures are respectively formed on the inner side walls of the shielding member holding grooves 112. One or more shielding member holding arms 144 are correspondingly provided at both ends of the shielding member 14 along the terminal arrangement direction. The holding card points on the shielding member holding arms 144 are reverse buckling structures. The reverse buckling structures can be clamped in the card slot structures, which can improve the connection strength between the shielding member 14 and the insulating body 11 and prevent detachment.

[0063] On the shielding member 14, there are also a number of shielding holding holes arranged at intervals along the arrangement direction of the upper row of terminals 12. On the other side wall of the insulating body 11, there are also a number of shielding member 14 holding posts arranged at intervals along the arrangement direction of the upper row of terminals 12. The shielding member 14 holding posts are respectively inserted into the shielding holding holes on the shielding member 14. The shielding member 14 holding posts and the shielding holding holes are fixedly inserted through interference fit, or fixedly connected through hot melt bonding, or snap connection. By inserting the shielding member 14 holding posts into the shielding holding holes, the two are positioned through interference connection, hot melt bonding or snap connection, etc., so that the shielding contact portion 141 on the shielding member 14 is always in close contact with each upper row of grounding terminals, avoiding the situation that individual shielding contact portions 141 cannot maintain stable electrical connection with the upper row of grounding terminals due to warping and deformation of the shielding member 14.

[0064] The structure for the lid member 16 to be fixedly connected to the insulating body 11 is as follows: The lid member 16 is provided with at least one protruding insertion arm. On the insulating body 11, there is a lid insertion slot opposite to the protruding insertion arm. The protruding insertion arms are respectively inserted into the respective lid insertion slots on the insulating body 11. On the shielding member 14, there are at least two rows of shielding holding holes arranged at intervals in the up and down direction, namely the upper row shielding holding holes 142 and the lower row shielding holding holes 143. The lid member 16 is also provided with a lid holding hole 164 opposite to the upper row shielding holding holes 142 on the shielding member 14. The lid holding hole 164 is sleeved on the outside of the shielding member 14 holding post on the insulating body 11. The lid member 16 is tightly clamped between the insulating body 11 and the shielding member 14. The lower row shielding holding holes 143 can be long holes or special-shaped holes. Preferably, one or more protruding insertion arms are provided at both ends of the lid member 16 along the arrangement direction of the upper row of terminals 12 to realize the insertion connection with the insulating body 11, forming positioning in the up and down and left and right directions, and then being clamped and fixed by the shielding member 14 and the insulating body 11. By providing the lid holding hole 164 thereon, on the one hand, it realizes the avoidance of the shielding member 14 holding post, and on the other hand, it realizes the further positioning of the lid member 16 at the middle part of the insulating body 11 through the shielding member 14 holding post.

[0065] On one side wall of the insulating body 11, there is also a lid member 16 receiving groove 113 for receiving the lid member 16. The lid member 16 is inserted into the lid member 16 receiving groove 113. On two opposite side walls of the lid member 16, there are also lid positioning ribs 161. The lid positioning ribs 161 tightly abut against two opposite side walls of the lid member 16 receiving groove 113. On the side wall of the lid holding hole 164 of the lid member 16, there are also interference bumps 162. The interference bumps 162 are in close contact with the side wall of the holding post of the shielding member 14. The lid member 16 is received in the lid member 16 receiving groove 113. The bottom surface of the lid member 16 tightly abuts against the limiting bottom surface of the lid member 16 receiving groove 113 at the bottom of the lid member 16 receiving groove 113. The upper side surface of the lid member 16 tightly abuts against the limiting upper surface of the lid member 16 receiving groove 113 on the upper side of the lid member 16 receiving groove 113. The left and right side walls of the lid member 16 tightly abut against the left and right limiting surfaces of the lid member 16 receiving groove 113 on the left and right sides of the lid member 16 receiving groove 113, realizing the stable positioning of the lid member 16. And this structure makes the lid member 16 not protrude to the outside of the insulating body 11, and can keep the shielding member 14 as a vertical plane, making the shape of the connector regular.

[0066] On the shielding member 14, there is a pressing convex bulge 145 protruding towards the lid member 16. The pressing convex bulge 145 tightly abuts against the surface of the lid member 16 on the side facing away from the insulating body 11. At the upper end of the shielding member 14, there is also a horizontal bending edge 146 formed. The horizontal bending edge 146 covers the upper side surface of the lid member 16. On the surface of the horizontal bending edge 146, there is an outward protruding bending edge clamping point 1461. The outward protruding bending edge clamping point 1461 is in interference positioning with the insulating body 11. Through the pressing convex bulge 145, the pressing and positioning of each part of the lid member 16 are realized, avoiding insufficient pressing force on the lid member 16 caused by reasons such as deformation of the shielding member 14 itself, and ensuring the pressing and positioning of the lid member 16 on the upper row of terminals 12. By providing the horizontal bending edge 146 at the upper end of the shielding member 14, the protection of the lid member 16 is realized, achieving the effect of shielding and dust prevention, and at the same time making the connection between the shielding member 14 and the insulating body 11 more stable.

Claims

1. A terminal positioning structure for a high-frequency card edge connector, comprising an insulating body and upper row terminals. A plurality of upper row terminal receiving grooves are provided on one side of the insulating body, and the upper row terminals are inserted into the upper row terminal receiving grooves one by one. It is characterized in that: The upper row of terminals includes an upper row terminal main body part, an upper row terminal contact arm, and an upper row terminal welding part. The upper row terminal main body part is a multi-segmented zigzag extended structure formed by at least one stamping. The upper row terminal contact arm and the upper row terminal welding part respectively extend reversely from the upper and lower ends of the upper row terminal main body part. There is also a cover part made of insulating material. The cover part is fixedly connected to the insulating body. Contact surfaces matching the outer shape of the upper row terminal main body part are respectively formed on the cover part and the side wall of the upper row terminal receiving groove. The contact surfaces on the cover part and the side wall of the upper row terminal receiving groove jointly clamp and position the upper row terminal main body part in three mutually perpendicular directions. The upper row terminal main body part is continuously zigzag bent along the depth direction and the height direction of the upper row terminal receiving groove to form a "concave" structure. A "convex" structure matching one side of the upper row terminal main body part is formed on the bottom surface of the upper row terminal receiving groove. A holding top block with a rectangular protrusion or a "concave" structure matching the outer shape of the other side of the upper row terminal main body part is formed on one side of the cover part facing the upper row terminal main body part. The holding top block structure corresponds to at least one concave structure formed on one side of the upper row terminal main body part facing the cover part. At least one holding rib that is vertically offset is respectively provided on the two side walls of the upper row terminal receiving groove along its width direction. The holding ribs respectively abut against the surfaces of the two opposite side walls of the upper row terminal in the thickness direction.

2. The terminal positioning structure of the high-frequency card edge connector according to claim 1, characterized in that: An arc-shaped structure protruding towards the cover part is formed at the root where the upper row terminal contact arm is connected to the upper row terminal main body part. A vertically extended strengthening stop surface is formed on the cover part. The outer circular surface of the arc-shaped structure at the root of the upper row terminal contact arm abuts against the strengthening stop surface on the cover part.

3. The terminal positioning structure of the high-frequency card edge connector according to claim 1, characterized in that: The upper row of terminals includes upper row communication terminals and upper row grounding terminals arranged at intervals. A shielding part is also fixedly installed on the insulating body. A plurality of elastic shielding part contact parts are provided on the shielding part at intervals. The shielding part contact parts contact the upper row terminal main body part of the upper row grounding terminals.

4. The terminal positioning structure of the high-frequency card edge connector according to claim 3, characterized in that: The structure for fixedly installing the shielding part on the insulating body is as follows: At least one shielding part holding groove is respectively provided at both ends of one side of the insulating body along the arrangement direction of the upper row of terminals. At least one shielding part holding arm is respectively formed at both ends of the shielding part along the arrangement direction of the upper row of terminals. A protruding holding card point is provided on the shielding part holding arm. The holding arms at both ends of the shielding part are respectively inserted into the shielding part holding grooves at both ends of the insulating body. The holding card points on the shielding part holding arms are clamped and fixed to the side walls of the shielding part holding grooves.

5. The terminal positioning structure of the high-frequency card edge connector according to claim 4, characterized in that: A plurality of shielding holding holes are also provided on the shielding part at intervals along the arrangement direction of the upper row of terminals. A plurality of shielding part holding columns are also provided on the other side wall of the insulating body at intervals along the arrangement direction of the upper row of terminals. The shielding part holding columns are respectively inserted into the shielding holding holes on the shielding part one by one. The shielding part holding columns and the shielding holding holes are fixedly inserted through interference fit or fixedly connected through hot melt bonding or snap connection.

6. The terminal positioning structure of the high-frequency card edge connector according to claim 5, characterized in that: The structure in which the lid member is fixedly connected to the insulating body is as follows: The lid member is provided with at least one convex plugging arm, and the insulating body is provided with a lid plugging groove opposite to the convex plugging arm. Each of the convex plugging arms is inserted into the corresponding lid plugging groove on the insulating body. At least two rows of shielding holding holes are arranged at intervals in the vertical direction on the shielding member, namely, an upper row of shielding holding holes and a lower row of shielding holding holes. The lid member is also provided with a lid holding hole opposite to the upper row of shielding holding holes on the shielding member. The lid holding hole is sleeved outside the shielding member holding column on the insulating body, and the lid member is tightly clamped between the insulating body and the shielding member.

7. The terminal positioning structure of the high-frequency card edge connector according to claim 6, wherein: A lid member accommodating groove for accommodating the lid member is further provided on one side wall of the insulating body. The lid member is inserted into the lid member accommodating groove. Lid positioning ribs are further provided on two opposite side walls of the lid member. The lid positioning ribs tightly abut against two opposite side walls of the lid member accommodating groove. Interference convex points are further provided on the side wall of the lid holding hole of the lid member. The interference convex points are in close contact with the side wall of the shielding member holding column.

8. The terminal positioning structure of the high-frequency card edge connector according to claim 6, characterized in that: The shielding member is provided with a pressing convex bulge protruding towards the lid member. The pressing convex bulge tightly abuts against the surface of the lid member on the side opposite to the insulating body. A horizontal bending edge is further formed at the upper end of the shielding member. The horizontal bending edge covers the upper side surface of the lid member. An outward protruding bending edge clamping point is provided on the surface of the horizontal bending edge. The outward protruding bending edge clamping point interferes with and positions the insulating body.

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