Dual-in-line terminal card edge connector

Abstract

The utility model discloses a double -bank terminal's card edge connector, and the insulating body forms the closed type inner row terminal fixed groove and the semi -closed type inner row terminal fixed groove for installing the same row arrangement's inner row terminal respectively at electronic card slot both sides, forms the outer row terminal fixed groove for installing the outer row terminal with the communication of semi -closed type inner row terminal fixed groove outside, sets up the insulating block on the outer row terminal fixed part of outer row terminal and carries out the barrier and the positioning to inner row terminal, or realizes both fixed positioning and insulating barrier through the fixed connection of insulating block with the outer row terminal fixed part of outer row terminal and the inner row terminal fixed part of inner row terminal in semi -closed type inner row terminal fixed groove respectively, the utility model is favorable to the small -size design of double -bank terminal card edge connector, and can realize double -bank terminal high accuracy, high -efficient assembly.

Description

Technical Field

[0001] This utility model relates to a connector, and more particularly to a double-row terminal edge connector. Background Technology

[0002] The DDR6 series card edge connector adopts a dual-row terminal structure, that is, an inner row of terminals is formed on both sides of the electronic card slot, and then an outer row of terminals is formed at intervals on the outside of the inner row of terminals. The contact points of the outer row of terminals and the contact points of the inner row of terminals simultaneously clamp and contact the gold fingers of the electronic card, improving the stability of current transmission, while meeting the requirements of high current transmission and realizing high-speed signal transmission. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides a double-row terminal edge connector, which can ensure that the contact points of the inner row terminals and the contact points of the outer row terminals are located on the same plane, and has the advantages of small size and high signal transmission efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a double-row terminal edge connector, including an insulating body, inner row terminals, and outer row terminals. An electronic card slot is formed in the middle of the insulating body. On both sides of the electronic card slot, the insulating body has several closed inner row terminal holding grooves and several semi-closed inner row terminal holding grooves arranged in a row. Several outer row terminal holding grooves are arranged opposite each other on the outer sides of the semi-closed inner row terminal holding grooves. The inner side of the outer row terminal holding grooves communicates with the outer side of the semi-closed inner row terminal holding grooves. A [missing information - likely a design feature or design element] is formed on the inner wall of the closed and semi-closed inner row terminal holding grooves near the electronic card slot. The device includes a clearance opening connecting to the electronic card slot. The inner row terminals are fixedly housed in a closed inner row terminal holding slot and a semi-closed inner row terminal holding slot, while the outer row terminals are fixedly housed in an outer row terminal holding slot. The inner row terminal contact points of each inner row terminal and the outer row terminal contact points of each outer row terminal extend into the electronic card slot through the clearance opening to contact the gold fingers of the electronic card. An insulating block is also provided, which is fixedly disposed on at least one of the outer row terminals and the inner row terminals located in the semi-closed inner row terminal holding slot. The insulating block insulates and isolates the outer row terminals from the inner row terminals located in the semi-closed inner row terminal holding slot.

[0005] As a further improvement of this utility model, the outer row terminal includes an outer row terminal holding part and an outer row terminal elastic arm. The outer row terminal elastic arm, with a width smaller than that of the outer row terminal holding part, extends downward at an angle from the lower end of the outer row terminal holding part. The inner row terminal includes an inner row terminal holding part and an inner row terminal elastic arm. The inner row terminal elastic arm, with a width smaller than that of the inner row terminal holding part, extends downward at an angle from the lower end of the inner row terminal holding part. The contact points of the outer row terminal and the inner row terminal are respectively located on the inner sidewalls of the ends of the outer row terminal elastic arm and the inner row terminal elastic arm. The upper openings of the closed inner row terminal holding groove, the semi-closed inner row terminal holding groove, and the outer row terminal holding groove all form countersunk structures with increased width. The inner row terminal holding part of the inner row terminal is tightly inserted into the countersunk structure of the opening of the closed inner row terminal holding groove and the semi-closed inner row terminal holding groove. The outer row terminal holding part of the outer row terminal is tightly inserted into the countersunk structure of the opening of the outer row terminal holding groove. Within the structure, the lower end faces of the inner and outer terminal holding parts respectively abut against the lower stepped surfaces of the countersunk structures at the upper ends of the closed inner terminal holding groove, the semi-closed inner terminal holding groove, and the outer terminal holding groove. The outer terminal holding part has an outer terminal holding point on its outer side facing away from the electronic card slot, and the inner terminal holding part has an inner terminal holding point on its inner side facing the electronic card slot. The outer terminal holding points can be embedded in the outer terminal holding part. On the inner wall of the countersunk structure of the holding groove, the inner row terminal holding points can be embedded in the inner wall of the countersunk structure of the closed inner row terminal holding groove or the semi-closed inner row terminal holding groove. The outer side of the inner row terminal located in the closed inner row terminal holding groove can be tightly combined with the inner wall of the countersunk structure of the closed inner row terminal holding groove. The outer side of the inner row terminal holding part located in the semi-closed inner row terminal holding groove can be tightly combined with the inner side of the insulating block and the outer row terminal holding part.

[0006] As a further improvement of this utility model, the insulating block is fixed on the outer row terminal holding part by in-mold injection molding or assembly. The countersunk structure at the upper end of the outer row terminal holding groove has insulating block clearance grooves formed on both sides of the outer row terminal thickness direction. The portion of the insulating block protruding from both sides of the outer row terminal thickness direction can be accommodated in the insulating block clearance groove. The inner end face of the insulating block near the inner row terminal forms an inner stop surface, and the outer side of the inner row terminal forms an outer stop surface. The outer stop surface of the inner row terminal is in close contact with the inner wall of the closed inner row terminal holding groove or in close contact with the inner stop surface of the insulating block.

[0007] As a further improvement of this utility model, the insulating block is a T-shaped structure with an outer end thickness greater than the inner end thickness, and the inner end thickness of the insulating block is greater than the thickness of the inner row of terminals. The two sides of the inner end of the insulating block along the thickness direction of the outer row of terminals form lateral stop surfaces of the insulating block. The insulating block clearance groove on the countersunk structure sidewall at the upper end of the outer row of terminals is a stepped groove with an outer end depth greater than the inner end depth that matches the insulating block. The lateral stop surfaces of the insulating block on both sides of the inner end of the insulating block are in close contact with the bottom surface of the insulating block clearance groove, and the inner stop surface of the insulating block stops on the inner wall of the inner side of the insulating block clearance groove.

[0008] As a further improvement of this utility model, a notch structure is formed at the lower end of the inner row terminal holding part, and the notch structure makes the inner row terminal holding part form an elastic cantilever structure on both sides along the width direction of the insulating body.

[0009] As a further improvement of this utility model, the inner and outer ends of the insulating block are respectively fixed to the outer row terminal holding part and the inner row terminal holding part located in the semi-enclosed inner row terminal holding groove by in-mold injection molding or assembly, so that the outer row terminal and the inner row terminal located in the semi-enclosed inner row terminal holding groove are fixedly connected to form an integral structure. The countersunk structure at the upper end of the outer row terminal holding groove and the countersunk structure at the upper end of the semi-enclosed inner row terminal holding groove have insulating block clearance grooves formed on both sides of their thickness direction. The portion of the insulating block protruding from the outer row terminal and the inner row terminal in the thickness direction can be accommodated in the insulating block clearance groove.

[0010] As a further improvement of this utility model, the insulating block is a T-shaped structure with an outer end thickness greater than the inner end thickness. The two sides of the inner end of the insulating block along its thickness direction form lateral stop surfaces. The insulating block clearance groove is a stepped groove with an outer end depth greater than the inner end depth that matches the insulating block. The lateral stop surfaces of the insulating block on both sides of the inner end of the insulating block are in close contact with the bottom surface of the inner end of the insulating block clearance groove, and the stepped surface between the inner end and the outer end of the insulating block stops on the stepped surface formed between the inner end and the outer end of the insulating block clearance groove.

[0011] The beneficial technical effects of this utility model are as follows: This utility model integrally forms an insulating block on the outer terminal holding part of the outer row of the double-row terminal edge connector. The insulating block isolates the inner and outer row terminals. Simultaneously, the insulating block, in conjunction with the outer terminal holding points on the outer row terminals and the inner terminal holding points on the inner row terminals, achieves fixed positioning of the outer and inner row terminals within the insulating body. This structure results in a small space occupied by the inner and outer row terminals within the edge connector, which is beneficial for the compact design of the double-row terminal edge connector. Furthermore, through the special arrangement of the inner and outer rows of terminals during stamping, pairs of inner and outer rows of terminals formed at equal intervals on the strip are cut to a fixed length and then integrally formed on the outer row terminal holding part of the outer row terminal using in-mold injection molding, or integrally formed on the outer row terminal holding part of the outer row terminal and the inner row terminal holding part of the inner row terminal. Then, they are placed using a carrier and synchronously inserted into the insulation body, realizing the rapid assembly of double-row terminals with high assembly efficiency and high precision after terminal assembly. Attached Figure Description

[0012] Figure 1 This is an exploded perspective view of the double-row terminal block connector of this utility model;

[0013] Figure 2 This is a diagram showing the usage status of the double-row terminal block connector of this utility model;

[0014] Figure 3 This is a perspective view of the insulating body of this utility model;

[0015] Figure 4 This is a perspective view of the outer terminal of the first structure of this utility model;

[0016] Figure 5 This is a perspective view of the inner row of terminals of the first structure of this utility model;

[0017] Figure 6 This is a three-dimensional schematic diagram of the assembly position of the outer row terminals in the first structure of this utility model;

[0018] Figure 7 This is a front view schematic diagram of the assembly position of the outer row terminals in the first structure of this utility model;

[0019] Figure 8 This is a three-dimensional schematic diagram of the assembly position of the inner row of terminals in the first structure of this utility model;

[0020] Figure 9 This is a front view schematic diagram of the assembly position of the inner row of terminals in the first structure of this utility model;

[0021] Figure 10This is a perspective view of the inner and outer rows of terminals in the first structure of this utility model after assembly.

[0022] Figure 11 This is a front view of the inner and outer rows of terminals in the first structure of this utility model after assembly.

[0023] Figure 12 for Figure 11 Enlarged view of section A in the middle;

[0024] Figure 13 This is a perspective view of the stamping and forming state of the second terminal strip in the second structure of this utility model;

[0025] Figure 14 This is a front view of the stamping and forming state of the second terminal strip in the second structure of this utility model;

[0026] Figure 15 This is a perspective view of the second terminal material strip in-mold injection molding insulating block in the second structure of this utility model;

[0027] Figure 16 This is a front view of the in-mold injection molding insulating block of the second terminal material strip in the second structure of this utility model;

[0028] Figure 17 This is a right view of the in-mold injection molding insulating block of the second terminal material strip in the second structure of this utility model;

[0029] Figure 18 This is a three-dimensional schematic diagram of the terminal assembly position in the second structure of this utility model;

[0030] Figure 19 This is a front view of the assembly position of the second terminal strip in the second structure of this utility model;

[0031] Figure 20 This is a front view of the terminal assembly completed in the second structure of this utility model;

[0032] Figure 21 for Figure 20 Enlarged view of section B in the middle. Detailed Implementation

[0033] Example: A double-row terminal edge connector includes an insulating body 11, inner row terminals 13, and outer row terminals 12. An electronic card slot 114 is formed in the center of the insulating body 11. On both sides of the electronic card slot 114, the insulating body 11 has several closed inner row terminal holding grooves 112 and several semi-closed inner row terminal holding grooves 113 arranged in a row. Several outer row terminal holding grooves 111 are arranged opposite each other on the outer sides of the semi-closed inner row terminal holding grooves 113. The inner side of each outer row terminal holding groove 111 communicates with the outer side of the semi-closed inner row terminal holding groove 113. The inner walls of the closed inner row terminal holding grooves 112 and semi-closed inner row terminal holding grooves 113 near the electronic card slot 114 have a barrier to prevent them from communicating with the electronic card slot 114. The inner row of terminals 13 are fixedly housed in the closed inner row terminal holding groove 112 and the semi-closed inner row terminal holding groove 113, respectively, and the outer row of terminals 12 are fixedly housed in the outer row terminal holding groove 111, respectively. The inner row terminal contact point 133 of each inner row terminal 13 and the outer row terminal contact point 1212 of each outer row terminal 12 extend into the electronic card slot 114 through the corresponding clearance opening to contact the gold fingers of the electronic card. An insulating block 122 is also provided. The insulating block 122 is fixedly disposed on at least one of the outer row terminal 12 and the inner row terminal 13 located in the semi-closed inner row terminal holding groove 113. The insulating block 122 insulates and isolates the outer row terminal 12 from the inner row terminal 13 located in the semi-closed inner row terminal holding groove 113.

[0034] Several inner row terminals 13 are respectively fixedly inserted into the closed inner row terminal holding groove 112 and the semi-closed inner row terminal holding groove 113 of the insulating body 11, and into the outer row terminal holding groove 111 of several outer row terminals 12. The inner row terminal contact points 133 of each inner row terminal 13 and the outer row terminal contact points 1212 of each outer row terminal 12 are arranged vertically, and the inner row terminal contact points 133 and the outer row terminal contact points 1212 on the same side are located on the same vertical plane, so as to achieve tight contact with the gold fingers of the electronic card 2 inserted into the electronic card slot 114. The inner row terminals 13 and the outer row terminals 12 form two rows of contact with the electronic card, which is conducive to improving contact stability, realizing high-quality signal transmission, and high-current, high-power signal transmission. Fixed locking fasteners and movable locking fasteners are also required at both ends of the insulating body 11 to realize the locking and positioning of the electronic card. Metal positioning parts are generally also provided at both ends of the insulating body 11. This invention is designed to improve the connection strength between the connector and the circuit board, and to prevent the pins of the outer row terminals 12 and the inner row terminals 13 from being desoldered by the tensile force. The inner row terminal 13 retaining groove for fixing the inner row terminals 13 is designed with two structures: one is a closed inner row terminal retaining groove 112 with both the inner and outer sides closed, and the other is a semi-closed inner row terminal retaining groove 113 with the outer side open and communicating with the outer row terminal retaining groove 111. This can reduce the distance between the outer row terminals 12 and the inner row terminals 13, thereby reducing the width of the entire edge connector and the size of the outer row terminals 12. At the same time, this invention uses an insulating block 122 to isolate the inner row terminals 13 and the outer row terminals 12, preventing them from contacting and conducting. The insulating block 122 can also improve the assembly firmness of the inner row terminals 13 and the outer row terminals 12 in the semi-closed inner row terminal retaining groove 113 and the outer row terminal retaining groove 111.

[0035] The outer terminal 12 includes an outer terminal holding portion 121 and an outer terminal 12 elastic arm. The outer terminal 12 elastic arm, with a width smaller than that of the outer terminal holding portion 121, extends downward at an angle from the lower end of the outer terminal holding portion 121. The inner terminal 13 includes an inner terminal holding portion 131 and an inner terminal 13 elastic arm. The inner terminal 13 elastic arm, with a width smaller than that of the inner terminal holding portion 131, extends downward at an angle from the lower end of the inner terminal holding portion 131. The outer terminal contact point 1212 and the inner terminal contact point 133 are respectively located on the outer terminal 12 elastic arm and the inner terminal 13 elastic arm. On the inner sidewall of the end of the elastic arm of terminal 13, the upper openings of the closed inner terminal holding groove 112, the semi-closed inner terminal holding groove 113, and the outer terminal holding groove 111 all form countersunk structures with increased width. The inner terminal holding part 131 of the inner terminal 13 is tightly inserted into the countersunk structure of the openings of the closed inner terminal holding groove 112 and the semi-closed inner terminal holding groove 113. The outer terminal holding part 121 of the outer terminal 12 is tightly inserted into the countersunk structure of the opening of the outer terminal holding groove 111. The lower end face of the sub-terminal holding part 131 and the lower end face of the outer terminal holding part 121 respectively stop on the lower end step surface of the countersunk structure at the upper end of the closed inner terminal holding groove 112, the semi-closed inner terminal holding groove 113, and the outer terminal holding groove 111. The outer terminal holding part 121 has an outer terminal holding point 1211 on its outer side facing away from the electronic card slot 114, and the inner terminal holding part 131 has an inner terminal holding point 132 on its inner side facing the electronic card slot 114. The outer terminal holding point 1211 can be embedded in the outer terminal holding part 121. On the inner wall of the countersunk structure of the groove 111, the inner row terminal holding point 132 can be embedded in the inner wall of the countersunk structure of the closed inner row terminal holding groove 112 or the semi-closed inner row terminal holding groove 113. The outer side of the inner row terminal 13 located in the closed inner row terminal holding groove 112 can be tightly combined with the inner wall of the countersunk structure of the closed inner row terminal holding groove 112. The outer side of the inner row terminal holding part 131 located in the semi-closed inner row terminal holding groove 113 can be tightly combined with the insulating block 122 and the inner side of the outer row terminal holding part 121.

[0036] The upper ends of the outer terminal holding groove 111, the semi-enclosed inner terminal holding groove 113, and the outer terminal holding groove 111 all form countersunk structures with increased width. These structures are used to fix and limit the outer terminal holding part 121 of the outer terminal 12 and the inner terminal holding part 131 of the inner terminal 13, thereby ensuring the positional accuracy of the inner terminal contact point 133 and the outer terminal contact point 1212. At the same time, the inner side of the inner terminal holding part 131 of the inner terminal 13 is secured to the inner wall of the enclosed inner terminal holding groove 112 or the semi-enclosed inner terminal holding groove 113 by the inner terminal holding point 132, thus achieving the pull-out resistance of the inner terminal 13 in the vertical direction. The outer side of the outer terminal holding part 121 of the outer terminal 12 is secured to the outer inner wall of the outer terminal holding groove 111 by the outer terminal holding point 1211, thus achieving the pull-out resistance of the outer terminal 12 in the vertical direction.

[0037] The insulating block 122 is fixed on the outer terminal holding part 121 by in-mold injection molding or assembly. The countersunk structure at the upper end of the outer terminal holding groove 111 forms insulating block 122 clearance grooves on both sides of the outer terminal 12 along the thickness direction. The portion of the insulating block 122 protruding from both sides of the outer terminal 12 in the thickness direction can be accommodated in the insulating block 122 clearance groove. The inner end face of the insulating block 122 near the inner terminal 13 forms an inner stop surface 1221. The outer side of the inner terminal 13 forms an outer stop surface 1311. The outer stop surface 1311 of the inner terminal 13 is in close contact with the outer inner wall of the closed inner terminal holding groove 112 or in close contact with the inner stop surface 1221 of the insulating block 122.

[0038] The insulating block 122 is integrally molded onto the outer terminal holding part 121 of the outer terminal 12 via in-mold injection molding. To increase the connection strength between the two, it is best to provide a non-circular hollow structure on the outer terminal holding part 121 of the outer terminal 12, so that during in-mold injection molding, the plastic of the insulating block 122 flows into the hollow structure of the outer terminal 12 to achieve a firm connection and positioning. Of course, the insulating block 122 can also be molded separately and then assembled onto the outer terminal holding part 121 via a snap-fit ​​or other structure to form an integral structure with the outer terminal 12, forming a [structure] on the inner side of the insulating block 122. The vertically extending inner stop surface 1221 is used to closely contact the outer stop surface 1311 on the outer side of the inner terminal holding part 131 of the inner terminal 13 in the semi-enclosed inner terminal holding groove 113, thereby achieving tight positioning of the outer side of the inner terminal 13 in the semi-enclosed inner terminal holding groove 113, and at the same time tight positioning of the inner side of the outer terminal 12. A holding point can also be formed on the outer stop surface 1311 on the outer side of the inner terminal 13, which is used to embed into the inner wall of the outer side of the enclosed inner terminal holding groove 112 and the inner stop surface 1221 of the insulating block 122, further improving the connection strength.

[0039] The insulating block 122 is a T-shaped structure with an outer end thickness greater than the inner end thickness, and the inner end thickness of the insulating block 122 is greater than the thickness of the inner row terminal 13. The two sides of the inner end of the insulating block 122 along the thickness direction of the outer row terminal 12 form the insulating block lateral stop surface 1222. The insulating block 122 clearance groove on the countersunk structure side wall at the upper end of the outer row terminal holding groove 111 is a stepped groove with an outer end depth greater than the inner end depth that matches the insulating block 122. The insulating block lateral stop surfaces 1222 on both sides of the inner end of the insulating block 122 are in close contact with the bottom surface of the insulating block 122 clearance groove, and the inner stop surface 1221 of the insulating block 122 stops on the inner wall of the inner side of the insulating block 122 clearance groove.

[0040] The insulating block 122 is designed as a T-shaped structure with an outer end thickness greater than the inner end thickness. The thinner end forms an insulating block lateral stop surface 1222 on both sides of its thickness direction. It is combined with the inner side of the insulating block 122 relief groove along the thickness direction of the outer row terminal 12 to achieve positioning of the insulating block 122 in the thickness direction. At the same time, the stepped surface between the two ends of the insulating block 122 and the stepped surface between the inner and outer ends of the insulating block 122 relief groove are matched to achieve positioning of the insulating block 122 along the width direction of the outer row terminal 12, so as to prevent it from squeezing the inner row terminal 13 during the assembly process and to prevent the outer row terminal 12 from loosening.

[0041] The lower end of the inner terminal holding portion 131 of the inner terminal 13 has a notch structure 134, which allows the inner terminal holding portion 131 to form an elastic cantilever structure on both sides along the width direction of the insulating body 11. This structure allows the side walls of the holding portion of the inner terminal 13 to have a certain degree of elasticity, facilitating the subsequent assembly of the inner terminal 13.

[0042] The inner and outer ends of the insulating block 122 are fixedly disposed on the outer terminal holding part 121 and the inner terminal holding part 131 located in the semi-enclosed inner terminal holding groove 113 by means of in-mold injection molding or assembly, respectively, so that the outer terminal 12 and the inner terminal 13 located in the semi-enclosed inner terminal holding groove 113 are fixedly connected to form an integral structure. The countersunk structure at the upper end of the outer terminal holding groove 111 and the countersunk structure at the upper end of the semi-enclosed inner terminal holding groove 113 respectively form insulating block 122 clearance grooves on both sides of the thickness direction. The portion of the insulating block 122 protruding from the outer terminal 12 and the inner terminal 13 in the thickness direction can be accommodated in the insulating block 122 clearance groove.

[0043] By means of in-mold injection molding or subsequent assembly, the two ends of the insulating block 122 are integrally formed on the outer row terminal 12 and the inner row terminal 13 located in the closed inner row terminal holding groove 112, so that the outer row terminal 12 and the inner row terminal 13 located in the semi-closed inner row terminal holding groove 113 form an integral structure. At the same time, there is plastic as a barrier between the two. During assembly, the inner row terminal 13 and the outer row terminal 12 integral structure can be inserted into the semi-closed inner row terminal holding groove 113 and the outer row terminal holding groove 111 at one time using a bracket. The assembly is convenient and the inner row terminal 13 and the outer row terminal 12 are firmly connected, which helps to improve the pull-out resistance of the inner row terminal 13 and the outer row terminal 12.

[0044] The insulating block 122 is a T-shaped structure with an outer end thickness greater than the inner end thickness. Lateral stop surfaces 1222 are formed on both sides of the inner end of the insulating block 122 along its thickness direction. The clearance groove of the insulating block 122 is a stepped groove with an outer end depth greater than the inner end depth, matching the insulating block 122. The lateral stop surfaces 1222 on both sides of the inner end of the insulating block 122 are in close contact with the bottom surface of the inner end of the clearance groove, and the stepped surface between the inner and outer ends of the insulating block 122 stops on the stepped surface formed between the inner and outer ends of the clearance groove. By designing the insulating block as a T-shaped structure with an outer end thickness greater than the inner end thickness, it can precisely limit the width of the outer row terminals 12 and the inner row terminals 13 located in the semi-enclosed inner row terminal holding groove 113, ensuring the positional accuracy of the inner row terminal contact point 133 and the outer row terminal contact point 1212.

[0045] A terminal assembly process includes the following steps:

[0046] Step 1: Several pairs of inner row terminals 13 are formed on the inner row terminal 13 strip by stamping, and an inner row terminal 13 pre-break groove is formed between each inner row terminal 13 and the inner row terminal 13 strip. Several pairs of outer row terminals 12 are formed on the outer row terminal 12 strip by stamping, and an outer row terminal 12 pre-break groove is formed between each outer row terminal 12 and the outer row terminal 12 strip.

[0047] Step 2: Cut the inner terminal strip 13 and the outer terminal strip 12 to a fixed length so that each section of the inner terminal strip 13 has a pair of inner terminal 13 terminals set on it, and each section of the outer terminal strip 12 has a pair of outer terminal 12 terminals set on it.

[0048] Step 3: Integrate the insulating block 122 onto the outer terminal holding part 121 of each outer terminal 12;

[0049] Step 4: Insert several pairs of outer row terminals 12 into the outer row terminal holding groove 111 of the insulating body 11. The elastic contact arm of the outer row terminal 12 on the outer row terminal 12 extends downward from the outer row terminal holding groove 111 toward the inner row terminal 13 holding groove. The outer row terminal contact point 1212 on the inner side of the end of the elastic contact arm of the outer row terminal 12 enters the electronic card slot 114 through the clearance opening on the inner side wall of the inner row terminal 13 holding groove.

[0050] Step 5: Break off and remove the outer terminal 12 strip along the pre-cut groove of the outer terminal 12;

[0051] Step Six: Insert several pairs of inner row terminals 13 into the closed inner row terminal holding groove 112 and the semi-closed inner row terminal holding groove 113 of the insulating body 11. The elastic contact arms of the inner row terminals 13 extend downward at an angle. The inner row terminal contact points 133 on the inner side of the end of the elastic contact arms of the inner row terminals 13 enter the electronic card slot 114 through the clearance opening on the inner side wall of the inner row terminal holding groove 13. The inner row terminal holding points on the inner side wall of the inner row terminal holding part 131 are embedded in the closed inner row terminal holding groove 112 and the semi-closed inner row terminal holding groove 113. On the inner wall of the inner side of the holding groove 113, the holding point of the outer row terminal 12 on the outer side wall of the outer row terminal holding part 121 is embedded in the inner wall of the outer side of the outer row terminal holding groove 111. The outer stop surface 1311 of the inner row terminal holding part 131 of the inner row terminal 13 of the closed inner row terminal holding groove 112 is in close contact with the inner wall of the outer side of the closed inner row terminal holding groove 112. The outer stop surface 1311 of the inner row terminal holding part 131 of the inner row terminal 13 of the semi-closed inner row terminal holding groove 113 is in close contact with the inner stop surface 1221 of the insulating block 122.

[0052] Step 7: Break off and remove the inner terminal strip 13 along the pre-cut groove of the inner terminal 13.

[0053] For the structure where the insulating block 122 is only injection molded or assembled on the outer row terminal holding part 121, the outer row terminal 12 is assembled first, and then the inner row terminal 13 is assembled. Since the outer row terminal contact point 1212 and the inner row terminal contact point 133 are on the same vertical plane after assembly, the outer row terminal contact point 1212 enters the electronic card slot 114 after passing through the semi-enclosed inner row terminal holding groove 113. When assembling the inner row terminal 13, the outer side of the inner row terminal 13 in the enclosed inner row terminal holding groove 112 is limited by the inner wall of the outer side of the enclosed inner row terminal holding groove 112, and the outer side of the inner row terminal 13 in the semi-enclosed inner row terminal holding groove 113 is limited by the plastic block on the outer row terminal 12.

[0054] In the aforementioned steps four to seven, 13 sets of inner terminal loading devices and 12 sets of outer terminal loading devices are designed. An inner material strip slot is formed on the inner terminal loading device that is consistent with the arrangement spacing and number of the closed inner terminal holding groove 112 and the semi-closed inner terminal holding groove 113 on the insulating body 11.

[0055] Insert all the inner row terminal 13 material strips into the inner row material strip slots of the inner row terminal 13 group loading device for positioning. Then, place a set number of insulating bodies 11 upside down on the inner row terminals 13 positioned on the inner row terminal 13 group loading device, so that the inner row terminals 13 are inserted one by one into the closed inner row terminal holding slots 112 and semi-closed inner row terminal holding slots 113 on the insulating bodies 11. Press the insulating bodies 11 down until they are blocked by the limiting edge of the inner row terminal 13 group loading device, so that the inner row terminals 13 are fully assembled in place. Then, push all the insulating bodies 11 horizontally to separate all the inner row terminal 13 material strips from the inner row terminals 13.

[0056] Position all the outer terminal strips 12 by inserting them into the inner and outer slots of the outer terminal 12 loading fixture. Then, place a predetermined number of insulating bodies 11 containing inner terminals 13 upside down onto the positioned outer terminals 12 on the outer terminal 12 loading fixture, ensuring that each outer terminal 12 is inserted into its corresponding outer terminal holding slot 111. Press the insulating bodies 11 downwards until they are stopped by the limiting edge of the outer terminal 12 loading fixture, ensuring the outer terminals 12 are fully assembled. Then, push all the insulating bodies 11 horizontally to separate all the outer terminal strips 12 from the outer terminals 12. (The outer terminal 12 loading fixture and the inner terminal 13 loading fixture allow multiple edge connectors to be inserted into both outer and inner terminals 12 simultaneously, resulting in high assembly accuracy and efficiency.)

[0057] A terminal assembly process includes the following steps:

[0058] Step 1: Several pairs of inner row terminals 13 are formed on the first terminal strip by stamping. A first terminal pre-break groove is formed between each inner row terminal 13 and the first terminal strip. Several sets of terminal groups formed by a pair of row terminals and a pair of outer row terminals 12 are formed on the second terminal strip by stamping. A second terminal pre-break groove is formed between each outer row terminal 12 and each inner row terminal 13 and the second terminal strip.

[0059] Step 2: Cut the first terminal strip and the second terminal strip to a fixed length so that each section of the first terminal strip has a set of inner row terminals 13 and each section of the second terminal strip has a set of terminal groups;

[0060] Step 3: Integrate the insulating block 122 into the outer terminal holding part 121 and the inner terminal holding part 131 of each terminal group;

[0061] Step 4: Insert the pairs of inner row terminals 13 from the first terminal strips and the groups of inner row terminals 13 and outer row terminals 12 from the second terminal strips into the closed inner row terminal holding groove 112, the semi-closed inner row terminal holding groove 113, and the outer row terminal holding groove 111 of the insulating body 11. The elastic contact arm of the inner row terminal 13 extends downward at an angle and enters the electronic card slot 114 through the clearance opening. The elastic contact arm of the outer row terminal 12 extends downward at an angle from the outer row terminal holding groove 111 toward the semi-closed inner row terminal holding groove 113. The outer row terminal 12 elastic contact arm on the inner side of the outer row terminal 12... The sub-contact 1212 enters the electronic card slot 114 through the clearance opening on the inner side wall of the semi-enclosed inner row terminal holding groove 113. The inner row terminal 13 holding point on the inner side wall of the inner row terminal holding part 131 is embedded in the inner wall of the enclosed inner row terminal holding groove 112 and the semi-enclosed inner row terminal holding groove 113 in the inner direction. The outer row terminal 12 holding point on the outer side wall of the outer row terminal holding part 121 is embedded in the inner wall of the outer side of the outer row terminal holding groove 111. The outer stop surface 1311 of the inner row terminal holding part 131 of the inner row terminal 13 of the enclosed inner row terminal holding groove 112 is in close contact with the inner wall of the outer side of the enclosed inner row terminal holding groove 112.

[0062] Step 5: Break off and remove the first terminal strip and the second terminal strip along the first terminal pre-break groove and the second terminal pre-break groove, respectively.

[0063] For the structure of insulating block 122 being molded or assembled on outer terminal holding part 121 and inner terminal holding part 131, insulating block 122 connects outer terminal 12 and inner terminal 13 in semi-enclosed terminal holding groove into an integral structure, and outer terminal 12 and inner terminal 13 can be assembled at the same time. The outer side of inner terminal 13 in enclosed inner terminal holding groove 112 is limited by the inner wall of the outer side of enclosed inner terminal holding groove 112, and inner terminal 13 and outer terminal 12 in semi-enclosed inner terminal holding groove 113 are limited by plastic block.

[0064] In steps four and five above, a terminal assembly loading device is designed. The loading device has a first terminal strip slot and a second terminal strip slot with the same spacing as the closed inner row terminal holding slots 112 and semi-closed inner row terminal holding slots 113 on the insulating body 11. The first terminal strip and the second terminal strip are respectively inserted into the first terminal strip slot and the second terminal strip slot for positioning. Then, a predetermined number of insulating bodies 11 are inverted and placed onto the positioned inner row terminals 13 and outer row terminals 12 on the terminal assembly loading device, so that... The inner row terminals 13 are inserted one-to-one into the closed inner row terminal holding grooves 112 and semi-closed inner row terminal holding grooves 113 on the insulating body 11, while the outer row terminals 12 are inserted one-to-one into the outer row terminal holding grooves 111 on the insulating body 11. The insulating body 11 is pressed against the limiting edge of the terminal assembly loading device, and the outer row terminals 12 and inner row terminals 13 are assembled in place. All the insulating bodies 11 are pushed horizontally, breaking and separating all the first terminal strips and second terminal strips along the first terminal pre-break grooves and second terminal pre-break grooves. The terminal assembly loading device can realize the positioning of the first terminal strips and second terminal strips. Multiple edge connectors can be inserted into the outer row terminals 12 and inner row terminals 13 at the same time, resulting in high assembly accuracy and efficiency.

Claims

1. A double-row terminal edge connector, comprising an insulating body (11), inner row terminals (13) and outer row terminals (12), wherein an electronic card slot (114) is formed in the middle of the insulating body, characterized in that: The insulating body has several enclosed inner terminal holding slots (112) and several semi-enclosed inner terminal holding slots (113) arranged in a row on both sides of the electronic card slot. Several outer terminal holding slots (111) are arranged opposite each other on the outer side of the semi-enclosed inner terminal holding slots. The inner side of the outer terminal holding slots communicates with the outer side of the semi-enclosed inner terminal holding slots. The enclosed and semi-enclosed inner terminal holding slots have clearance openings on their inner walls near the electronic card slot to connect them to the electronic card slot. The inner terminals are fixedly accommodated one-to-one in the enclosed inner terminal holding slots. In the terminal holding groove and the semi-enclosed inner terminal holding groove, the outer terminals are fixedly accommodated one by one in the outer terminal holding groove. The inner terminal contact point (133) of each inner terminal and the outer terminal contact point (1212) of each outer terminal extend into the electronic card slot through the corresponding clearance opening to contact the gold fingers of the electronic card. An insulating block (122) is also provided. The insulating block is fixedly disposed on at least one of the outer terminals and the inner terminals located in the semi-enclosed inner terminal holding groove. The insulating block insulates and isolates the outer terminals from the inner terminals located in the semi-enclosed inner terminal holding groove.

2. The double-row terminal edge connector according to claim 1, characterized in that: The outer row terminal includes an outer row terminal holding part (121) and an outer row terminal elastic arm. The outer row terminal elastic arm, with a width smaller than that of the outer row terminal holding part, extends downward at an angle from the lower end of the outer row terminal holding part. The inner row terminal includes an inner row terminal holding part (131) and an inner row terminal elastic arm. The inner row terminal elastic arm, with a width smaller than that of the inner row terminal holding part, extends downward at an angle from the lower end of the inner row terminal holding part. The contact points of the outer row terminal and the inner row terminal are respectively located on the inner sidewalls of the ends of the outer row terminal elastic arm and the inner row terminal elastic arm. The upper openings of the closed inner row terminal holding groove, the semi-closed inner row terminal holding groove, and the outer row terminal holding groove all form countersunk structures with increased width. The inner row terminal holding part of the inner row terminal is tightly inserted into the countersunk structure of the openings of the closed inner row terminal holding groove and the semi-closed inner row terminal holding groove. The outer row terminal holding part of the outer row terminal is tightly inserted into the countersunk structure of the opening of the outer row terminal holding groove. The lower end face of the sub-terminal holding part and the lower end face of the outer terminal holding part respectively stop on the lower step surface of the countersunk structure at the upper end of the closed inner terminal holding groove, the semi-closed inner terminal holding groove, and the outer terminal holding groove. The outer terminal holding part is provided with an outer terminal holding point (1211) on the outer side facing away from the electronic card slot, and the inner terminal holding part is provided with an inner terminal holding point (132) on the inner side facing the electronic card slot. The outer terminal holding point can be embedded in the outer terminal holding part. On the inner wall of the countersunk structure of the sub-retaining groove, the inner row terminal retaining points can be embedded in the inner wall of the countersunk structure of the closed inner row terminal retaining groove or the semi-closed inner row terminal retaining groove. The outer side of the inner row terminal located in the closed inner row terminal retaining groove can be tightly combined with the inner wall of the countersunk structure of the closed inner row terminal retaining groove. The outer side of the inner row terminal retaining part located in the semi-closed inner row terminal retaining groove can be tightly combined with the inner side of the insulating block and the outer row terminal retaining part.

3. The double-row terminal edge connector according to claim 2, characterized in that: The insulating block is fixed on the outer terminal holding part by in-mold injection molding or assembly. The countersunk structure at the upper end of the outer terminal holding groove has insulating block clearance grooves formed on both sides of the outer terminal thickness direction. The portion of the insulating block protruding from both sides of the outer terminal thickness direction can be accommodated in the insulating block clearance groove. The inner end face of the insulating block near the inner terminal forms an inner stop surface (1221), and the outer side of the inner terminal forms an outer stop surface (1311). The outer stop surface of the inner terminal is in close contact with the inner wall of the closed inner terminal holding groove or the inner stop surface of the insulating block.

4. The double-row terminal edge connector according to claim 3, characterized in that: The insulating block is a T-shaped structure with an outer end thickness greater than the inner end thickness, and the inner end thickness of the insulating block is greater than the thickness of the inner row of terminals. The two sides of the inner end of the insulating block along the thickness direction of the outer row of terminals form the insulating block lateral stop surface (1222). The insulating block clearance groove on the countersunk structure side wall at the upper end of the outer row of terminals is a stepped groove with an outer end depth greater than the inner end depth that matches the insulating block. The insulating block lateral stop surfaces on both sides of the inner end of the insulating block are in close contact with the bottom surface of the insulating block clearance groove, and the inner stop surface of the insulating block stops on the inner wall of the inner side of the insulating block clearance groove.

5. The double-row terminal edge connector according to claim 3, characterized in that: The lower end of the inner row terminal holding part of the inner row terminal has a notch structure (134), and the notch structure makes the inner row terminal holding part form an elastic cantilever structure on both sides of the insulation body width direction.

6. The double-row terminal edge connector according to claim 2, characterized in that: The inner and outer ends of the insulating block are fixed to the outer terminal holding part and the inner terminal holding part located in the semi-enclosed inner terminal holding groove by in-mold injection molding or assembly, respectively, so that the outer terminal and the inner terminal located in the semi-enclosed inner terminal holding groove are fixedly connected to form an integral structure. The countersunk structure at the upper end of the outer terminal holding groove and the countersunk structure at the upper end of the semi-enclosed inner terminal holding groove have insulating block clearance grooves formed on both sides of their thickness direction. The portion of the insulating block protruding from the outer terminal and the inner terminal in the thickness direction can be accommodated in the insulating block clearance groove.

7. The double-row terminal edge connector according to claim 6, characterized in that: The insulating block is a T-shaped structure with an outer end thickness greater than the inner end thickness. The two sides of the inner end of the insulating block along its thickness direction form lateral stop surfaces. The insulating block clearance groove is a stepped groove with an outer end depth greater than the inner end depth that matches the insulating block. The lateral stop surfaces of the insulating block on both sides of the inner end of the insulating block are in close contact with the bottom surface of the inner end of the insulating block clearance groove, and the stepped surface between the inner end and the outer end of the insulating block stops on the stepped surface formed between the inner end and the outer end of the insulating block clearance groove.

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