阅读说明：本技术 卡缘连接器 (Card edge connector ) 是由 张永东 田立春 曾铁武 马兹国 于 2021-07-29 设计创作，主要内容包括：一种卡缘连接器,其连接有线缆,用以将电子卡连接至线缆,再通过线缆连接至主板,所述卡缘连接器包括具有前述插槽的插槽主体与分别安装在前述插槽两侧的两端子模组,所述各端子模组均包括一排卡连接端子与包覆成型固定所述卡连接端子的卡端子固定条,所述卡连接端子上端与电子卡接触配合,下端延伸形成焊接部,所述焊接部露出所述卡端子固定条,并焊接连接前述线缆,所述两端子模组的至少一端子模组的卡连接端子具有多根低频同步信号端子,所述低频同步信号端子向下延伸超出其他卡连接端子,所述各低频同步信号端子下端通过一连接部连接成一体,如此连接结构简单,低频同步信号端子的同步性好。(A card edge connector is connected with a cable for connecting an electronic card to the cable and then connecting the cable to a mainboard, the card edge connector comprises a slot main body with the slot and two terminal modules respectively arranged at two sides of the slot, each terminal module comprises a row of card connecting terminals and a card terminal fixing strip for fixing the card connecting terminals in an cladding forming way, the upper ends of the card connecting terminals are in contact fit with the electronic card, the lower ends of the card connecting terminals extend to form a welding part, the welding part is exposed out of the card terminal fixing strip and is connected with the cable in a welding way, the card connecting terminal of at least one terminal module of the two terminal modules is provided with a plurality of low-frequency synchronous signal terminals, the low-frequency synchronous signal terminals extend downwards to exceed other card connecting terminals, and the lower ends of the low-frequency synchronous signal terminals are connected into a whole through a connecting part, so that the connecting structure is simple, the low-frequency synchronous signal terminal has good synchronism.)

1. A card edge connector, its upper end has the card connecting part which can be butt-jointed with the card edge, the said card connecting part has the slot which extends longitudinally for the insertion and matching of an electronic card, the lower end of the said card edge connector is connected with the cable and connected to the mainboard through the cable, the said card edge connector includes the slot main body with the said slot and two terminal modules which are installed on the two sides of the said slot respectively, each terminal module includes a row of card connecting terminals and the card terminal fixing strip which is coated and formed to fix the said card connecting terminals, the upper end of the said card connecting terminals is matched with the electronic card, the lower end extends to form the welding part, the said welding part exposes the said card terminal fixing strip and connects the said cable by welding, characterized in that, the card connecting terminal of at least one terminal module of the said two terminal modules has many low frequency synchronous signal terminals, each low-frequency synchronous signal terminal is connected with a connecting part and is mutually conducted through the connecting parts.

2. The card edge connector according to claim 1, wherein: the low-frequency synchronous signal terminals extend downwards to exceed other card connecting terminals, and the lower ends of the low-frequency synchronous signal terminals are connected into a whole through a connecting part.

3. The card edge connector as claimed in claim 2, wherein: the low-frequency synchronous signal terminals and the other card connecting terminals are arranged at intervals, extend beyond the other card connecting terminals and then bend to one side, so that the connecting part avoids the routing space of the other card connecting terminals corresponding to the cables.

4. The card edge connector as claimed in claim 3, wherein: the terminal module further comprises inner film plastic, and the inner film plastic is coated on the card connecting terminal and the card terminal fixing strip through secondary forming and coats the connecting part of the card connecting terminal and the cable.

5. The card edge connector as claimed in claim 4, wherein: the card terminal fixing strip is provided with an outer side face facing the outer side of the two terminal modules, the welding part is exposed out of the outer side face, and the bending of the low-frequency synchronous signal terminal faces the inner side of the two terminal modules.

6. The card edge connector as claimed in claim 5, wherein: the inner film plastic covers the welding part and the connecting part of the card connecting terminal.

7. The card edge connector as claimed in claim 6, wherein: the card edge connector is installed in the frame, the frame includes the fixed plate, the fixed plate is equipped with the fixed slot, the card connecting portion passes the fixed slot from bottom to top and exposes in the upside of fixed plate.

8. The card edge connector as claimed in claim 7, wherein: the card edge connector further includes a board connection part which connects a cable and is connected to the main board through the cable.

9. The card edge connector as claimed in claim 8, wherein: the board connecting portion is equipped with many board connecting terminals, board connecting terminal is equipped with roughly parallel to the contact site that the mounting panel direction extends, the contact site has the contact surface towards the mounting panel, card edge connector installs behind the mounting panel, the elastic contact face supports the metal conducting strip of pressing in the setting of mounting panel surface, thereby realizes board connecting terminal with the electricity of mounting panel is connected, card connecting portion is provided with a plurality of low frequency signal terminals, low frequency signal terminal pass through the cable connect in the part of board connecting portion board connecting terminal.

10. The card edge connector as claimed in claim 9, wherein: one of the low-frequency synchronous signal terminals is welded on a cable, and the other low-frequency synchronous signal terminals are connected to the main board through the cable.

Technical Field

The present invention relates to an electrical card connector, and more particularly, to an electrical card connector for connecting cables.

Background

Patent application CN112952425A published by fushikang corporation on 6/11/2021 discloses an electronic card edge connector with a cable, which includes a flat cable, an edge connector located at one end of the flat cable, an electronic card and a locking structure; the flat cable comprises a plurality of electric wires, the front end of the clamping edge connecting part is provided with a lengthwise central groove, and the rear end of the clamping edge connecting part is connected with the electric wires of the flat cable one by one; the card is inserted into the central slot and is fixed to the card edge connector by the locking structure.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a card edge connector with a cable, which is provided with a plurality of low-frequency synchronous signal terminals, and the low-frequency synchronous signal terminals have good synchronism.

In order to solve the above technical problems, the present invention provides a card edge connector, the upper end of which is provided with a card connecting portion capable of mating with a card edge, the card connecting portion is provided with a slot extending longitudinally for an electronic card to be inserted and mated, the lower end of the card edge connector is connected to a cable and is connected to a motherboard through the cable, the card edge connector comprises a slot main body having the slot and two terminal modules respectively installed at both sides of the slot, each terminal module comprises a row of card connecting terminals and a card terminal fixing strip for fixing the card connecting terminals by coating molding, the upper end of the card connecting terminals is in contact and mated with the electronic card, the lower end of the card connecting terminals extends to form a welding portion, the welding portion exposes the card terminal fixing strip and is welded to the cable, the terminal of at least one terminal module of the two terminal modules has a plurality of low frequency synchronous signal terminals, each low-frequency synchronous signal terminal is connected with a connecting part and is mutually conducted through the connecting parts. . Through the design, the card edge connector is simple in structure, and the low-frequency synchronous signal terminals are connected into a whole through the connecting part, so that the improvement can be realized.

Furthermore, the low-frequency synchronous signal terminal extends downwards to exceed other card connecting terminals, and the lower ends of the low-frequency synchronous signal terminals are connected into a whole through a connecting part.

Furthermore, the low-frequency synchronous signal terminals and the other card connecting terminals are arranged at intervals, extend beyond the other card connecting terminals and then bend to one side, so that the connecting part avoids the routing space of the other card connecting terminals corresponding to the cables.

Further, the terminal module further comprises inner film plastic, and the inner film plastic covers the card connecting terminal and the card terminal fixing strip through secondary forming and covers the connecting part of the card connecting terminal and the cable.

Furthermore, the card terminal fixing strip is provided with an outer side surface facing the outer side of the two terminal modules, the welding part is exposed out of the outer side surface, and the bending of the low-frequency synchronous signal terminal faces the inner side of the two terminal modules.

Further, the terminal module further comprises an inner film plastic coated and molded on the card connecting terminal and the card terminal fixing strip, and the inner film plastic coats the welding part of the card connecting terminal and the connecting part simultaneously.

Further, the card edge connector is installed in a rack, the rack includes a fixing plate, the fixing plate is provided with a fixing groove, and the card connecting portion penetrates the fixing groove from bottom to top to be exposed out of the upper side of the fixing plate.

Further, the card edge connector further includes a board connection part which connects a cable and is connected to the main board through the cable.

Further, board connecting portion are equipped with many board connecting terminal, board connecting terminal is equipped with roughly parallel to the contact site that the mounting panel direction extends, the contact site has the contact surface towards the mounting panel, card edge connector installs behind the mounting panel, the elastic contact surface supports the metal conducting strip of pressing in mounting panel surface setting, thereby realizes board connecting terminal with the electricity of mounting panel is connected, card connecting portion are provided with a plurality of low frequency signal terminals, low frequency signal terminal pass through the cable connect in board connecting portion board connecting terminal.

Further, one of the low frequency synchronizing signal terminals is soldered to a cable, and the low frequency synchronizing signal terminals are connected to the main board through the cable. Each low-frequency synchronous signal terminal shares one cable to be connected to the mainboard, so that the number of cables can be reduced, the cost can be reduced, and the synchronism of each low-frequency synchronous signal terminal can be improved.

Drawings

Fig. 1 is a perspective view of a card edge connector according to the present invention before being mounted on a mounting plate of a rack and being plugged with an electronic card.

Fig. 2 is a perspective view of the card edge connector shown in fig. 1.

Fig. 3 is an exploded view of the card edge connector shown in fig. 2.

Fig. 4 is a perspective view of the two-card terminal module shown in fig. 3.

Fig. 5 is a perspective view of the two-card terminal module shown in fig. 4 with an inner film removed to show the internal structure.

Fig. 6 is a sectional view taken along a-a in fig. 2.

Fig. 7 is an assembled view of a portion of the components of the electrical connector shown in fig. 6.

Fig. 8 is an assembly view of the panel connecting part shown in fig. 7.

Fig. 9 is an assembled view from another perspective of fig. 7.

Fig. 10 is a schematic view of the assembled components of fig. 7.

Fig. 11 is a sectional view taken along a-a in fig. 2.

Fig. 12 is a partial enlarged view of the wire portion shown in fig. 5.

Detailed Description

As shown in fig. 1 and fig. 2, a card edge connector 100 is mounted on a rack (not shown), a card connecting portion 110 is disposed at a front end of the card edge connector 100, and the card connecting portion 110 is provided with a longitudinally extending slot 120 for inserting and mating a card edge of a PCIE electronic card 170. The rear end of the card edge connector 100 is connected to a cable 160, and is connected to a main board (not shown) through the cable 160. The PCIE card is connected to the cable 160 through the card edge connector 100, and then connected to a position close to a processor (not shown) of a motherboard (not shown) through the cable 160, so that the PCIE card 170 can be flexibly arranged on the motherboard, thereby facilitating miniaturization design of the device, and facilitating the placement of the PCIE card 170 on a position convenient for plugging. In addition, the high-speed signal of the PCIE electronic card 170 is connected to a position as close to the processor as possible through a cable, which is beneficial to maintaining the integrity of the high-speed signal and simplifying the circuit design of the motherboard.

The housing includes a mounting plate 180 having a mounting groove 182, and the slot 120 protrudes from an upper side of the mounting plate 180 after the card edge connector 100 is mounted on the mounting groove 182. The mounting plate 180 is a circuit board. The card edge connector 100 further includes a board connection part 140 at one lateral side of the card connection part 110.

As shown in fig. 2 to 6, the card connecting portion 110 includes a socket body 200 formed of an insulating plastic and a two-card terminal module 300 assembled in the socket body 200. The two card terminal modules 300 are respectively arranged at two sides of the slot 120, and respectively elastically press against and contact with the gold fingers on two side surfaces of the PCIE electronic card 170, thereby implementing conductive connection. The card terminal module 300 includes a plurality of card connecting terminals 320 arranged in a longitudinal direction, a card terminal fixing strip 340 integrally formed with the plurality of card connecting terminals 320, a cable 160 connected to the tail of the plurality of card connecting terminals 320, and an inner film plastic 360 (secondary coating molding) coated on the connecting portion of the cable 160 and the terminal 320.

As shown in fig. 6 to 10, the board connecting portion 140 includes a board connecting body 400 formed by molding insulating plastic, and a board terminal module 420 fixed in the board connecting body 400. The board terminal module 420 includes eight board connection terminals 440 and a board terminal fixing strip 460 in which the eight board connection terminals 440 are fixed by molding. The eight board connection terminals 440 are arranged in a vertical row for transmitting non-high frequency signals. The board connection terminals 440 each include a board terminal contact portion 442 extending in parallel to the direction of the fixing plate, a board terminal fixing portion 444 fixed in the board terminal fixing strip 460, and a board terminal welding portion 446 extending from the board terminal fixing portion 444 in a direction perpendicular to the mounting plate 180.

The board terminal fixing strip 460 extends in a longitudinal direction, and includes a board terminal fixing section 462 at an intermediate position and embedding sections 464 at both ends of the board terminal fixing section 462. The board connecting body 400 also extends in a longitudinal direction, and includes a terminal receiving section 402 at a middle position and fixing sections 404 at two ends of the terminal receiving section 402, the fixing sections 404 are provided with fixing grooves 406 horizontally opened toward the card connecting portion 120, and the fixing grooves 406 are used for receiving the insertion sections 464 of the board terminal fixing strips 460. The terminal receiving section 402 is provided with a terminal receiving groove 403 opened toward the card connecting portion 120 and penetrating the mounting plate 180, and after the board terminal module 420 is mounted to the board connecting body 400, the board terminal contact portion 442 is received in the terminal receiving groove 403 and provided with a contact surface (not numbered) facing upward. The board connecting body 400 is provided with a mounting surface 405 which is upwardly attached to the fixing board 180, and a board terminal contact portion 442 of the board connecting terminal 440 protrudes from the mounting surface 405, so that after the card edge connector 100 is fixed to the mounting board 180 from the bottom up, the contact surface is pressed against a metal conductive sheet (not shown) provided on the surface of the mounting board 180, thereby achieving the electrical connection between the board connecting terminal 440 and the mounting board 180.

The slot 120 of the slot body 200 of the card connector 110 includes a non-high-speed slot 112 and a high-speed slot 114 (shown in fig. 7) separated from each other, and the non-high-speed slot 112 is used for connecting a low-speed signal or a power signal. A plurality of non-high-speed terminals (not numbered) are disposed in the non-high-speed slot 112, two of the non-high-speed terminals are connected to two of the board connection terminals 440 of the board connection part 140 through cables 164 (as shown in fig. 4, 7 and 9). The other terminals 320 and the other six board connection terminals 440 of the card connection portion 110 are connected to the cables 160, and then connected to a plug connector (not shown) connected to a connector (not shown) mounted on the motherboard, the connector on the motherboard being disposed close to the processor on the motherboard, so that the high-speed signal of the PCIE electronic card is connected to a position close to the processor on the motherboard through the cables.

As shown in fig. 2, 3 and 11, the card edge connector 100 further includes an outer film plastic 600. The outer film plastic 600 covers the cables 160 and 164, the card connecting terminal 320, and the board connecting terminal 440, thereby protecting the connection between the cables 160 and 164 and the terminals. The exterior film plastic 600 at least partially covers both the socket body 200 and the board connecting body 400, so that the socket body 200 and the board connecting body 400 can be fixed as a whole.

As shown in fig. 6, 7, 10 and 11, two first fixing blocks 240 are disposed at one lateral side of the socket body 200, a mounting groove 248 is formed between the two first fixing blocks 240 (as shown in fig. 7), the two first fixing blocks 240 are provided with fixing ribs 242 protruding into the mounting groove 248, and the fixing ribs 242 are also received in the fixing grooves 406 and located at the outer sides of the two insertion sections 464 in the longitudinal direction.

As shown in fig. 7, 10 and 11, two second fixing blocks 260 are disposed at two longitudinal ends of the socket body 200, each of the two first fixing blocks 240 and the two second fixing blocks 260 has a counter bore 268 formed from bottom to top for accommodating a fixing nut 28, and the counter bore 268 has a downward counter table 270. The nut 28 has a hexagonal cylindrical portion 284 at an upper end and an annular flange portion 282 from a lower end of the cylindrical portion 284. The column portion 284 is received in the counterbore 268, the upper surface of the column portion 240 is attached to the counter sink 270, and the upper surface of the flange portion 284 is also attached to the lower surfaces (not numbered) of the first fixing block 240 and the second fixing block 260, so that the nut 28 can provide a large locking force when the card edge connector 100 is fastened to the fixing plate 180 by a screw.

The upper sides of the longitudinal outer sides of the two second fixing blocks 260 are provided with grooves 246, and the grooves 246 are filled with outer film plastic 600. The two second fixing blocks 260 extend and protrude toward one side of the board terminal connection part 140 in the lateral direction. The socket body 200 is provided with an auxiliary fixing block 290 between the first fixing block 240 and the second fixing block 260, and glue passing grooves 292 are provided between the auxiliary fixing block 290 and the first fixing block 240 and the second fixing block 260 (as shown in fig. 10). The socket body 200 is provided with a flange 272 (as shown in fig. 6 and 9) at the other lateral side opposite to the board coupling part 140, and upper surfaces of the auxiliary fixing block 290, the first fixing block 240, the second fixing block 260, and the flange 272 abut against a lower surface of the fixing plate 180. In addition, the auxiliary fixing block 290, the first fixing block 240, the second fixing block 260, and the flange 272 are respectively provided at upper sides thereof with a groove 246, and the outer film plastic 600 is wrapped into each groove 246, such that the outer film plastic 600 is completely wrapped around the socket body 200.

Referring to fig. 5 and 12, the card connecting terminal 320 of the card connecting portion 110 includes four synchronizing signal terminals 321, 322, 323, 324 for transmitting the same low frequency signals, in order to improve the synchronization consistency of the low frequency signals, the four synchronizing signal terminals 321, 322, 323, 324 are punched from a strip of material, and a connecting portion 325 is formed by punching the strip of material integrally to connect the four synchronizing signal terminals 321, 322, 323, 324 into a whole, and in addition, the four synchronizing signal terminals 321, 322, 323, 324 are electrically connected to the same cable 160, so that the welding of the cable can be reduced.

The card terminal fixing strip 340 has a lower end surface 346 and an outer side surface 348 located outside the two card terminal module 300, wherein a step (not numbered) is formed at the boundary between the lower end surface 346 and the outer side surface 348 by concave inward, and a lower step surface 342 and a side step surface 344 are formed corresponding to the lower end surface 346 and the outer side surface 348, respectively. Each card connecting terminal 320 includes a soldering portion 330 extending downward from the lower step surface 342 and the level side step surface 344, wherein the soldering portions of the four synchronization signal terminals 321, 322, 323, 324 extend downward beyond the lower end surface 346 and then bend inward of the two card terminal modules 300 to connect the connecting portion 325, so that the connecting portion 325 avoids the cable routing space for connecting other card connecting terminals 320.

Each card terminal module 300 further includes a ground strip 35, the ground strip 35 being attached to the outer side surface 348 of the card terminal fixing strip 340 and including claws 358 inserted into the card terminal fixing strip 240 to be connected to each ground terminal in the card connecting terminals 320, a connecting arm 360 longitudinally connecting the lower side of each claw 358, and a fixing piece 362 extending downward from the connecting arm 360. Lateral surface 348 is equipped with the groove of stepping down 350, the groove of stepping down 350 is including holding portion 352 and communicating part 354, holding portion 352 accepts claw 358 and connecting arm 360 of grounding strip 35, holding portion 352 is lengthwise shape and distributes in lateral surface 348 to pass through communicating part 354 intercommunication with card terminal fixed strip 340 downside, so that when 360 shaping of inner membrance plastic, fully link up this two parts. The fixing piece 362 and the fixing column 349 are in interference fit with each other to fix the ground strip on the card terminal fixing strip 340, so as to facilitate molding of the inner film plastic 360.

When the card edge connector 100 is assembled, the steps are sequentially performed as follows, the card connecting terminal 320, the material belt and the card terminal fixing strip 340 are integrally embedded and molded; cutting off the material belt after molding; bending four low-frequency signal terminals 321, 322, 323 and 324; installing a grounding strip 35; a weld cable 160; forming two card terminal modules 300 by secondary molding of the inner film plastic 360; after the two card terminal modules 300 are stacked, they are inserted into the socket body 200; a mounting plate connecting portion 140; finally, the outer film 600 is molded. In the step of molding the outer film, the step of pre-loading nut 28 into counterbore 268 and screwing screw 660 into nut 28 is further included, so as to ensure that screw 660 does not interfere with outer film plastic 600 when card edge connector 100 is mounted on the chassis.