阅读说明：本技术 卡缘连接器 (Card edge connector ) 是由 张永东 马兹国 田立春 曾波 于 2021-07-29 设计创作，主要内容包括：一种卡缘连接器,其安装于机架上。所述卡缘连接器的前端设有可与卡缘对接配合的卡连接部,所述卡连接部设有纵向延伸的插槽,用以供一电子卡插入配合。所述卡缘连接器的后端连接于线缆,并通过线缆连接至主板上。通过所述卡缘连接器,电子卡可以设置在主板上较为自由的位置,并且可以使电子卡直接插拔配合,组装与更换方便。(A card edge connector is mounted on a frame. The front end of the card edge connector is provided with a card connecting part which can be in butt joint with the card edge, and the card connecting part is provided with a slot which extends longitudinally and is used for inserting and matching an electronic card. The rear end of the card edge connector is connected to a cable and is connected to the mainboard through the cable. Through the card edge connector, the electronic card can be arranged at a free position on the mainboard, and the electronic card can be directly inserted and matched, so that the assembly and the replacement are convenient.)

1. The card edge connector is characterized in that a flange protruding laterally is arranged on the lower side of the card connecting part and used for being fixed on a rack.

2. The card edge connector according to claim 1, wherein: the frame is including the mounting panel that is equipped with the mounting groove, card edge connector upwards install in behind the mounting groove, card connecting portion salient in the upside of mounting panel, the flange top leans on the downside of mounting panel.

3. The card edge connector as claimed in claim 2, wherein: the flange of the card connecting part of the card edge connector is provided with a screw fastening structure, and the screw fastening structure is fastened to the mounting plate upwards.

4. The card edge connector as claimed in claim 2, wherein: the mounting panel is the circuit board, card edge connector still is in the board connecting portion of card connecting portion one side, board connecting portion with the mounting panel electricity is connected.

5. The card edge connector as claimed in claim 4, 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 contact surface supports the metal conducting strip of pressing in mounting panel surface setting, thereby realizes board connecting portion with the electricity of mounting panel is connected.

6. The card edge connector as claimed in claim 5, wherein: the card connecting part provides insertion and matching of the PCIE card.

7. The card edge connector as claimed in claim 6, wherein: the card connecting portion is provided with a plurality of low-frequency signal terminals, the low-frequency signal terminals pass through the cable connect in the board connecting portion board connecting terminal.

8. The card edge connector as claimed in claim 7, wherein: the card connecting part comprises a slot main body and two card terminal modules arranged on two sides of the slot, each card terminal module is provided with a row of card connecting terminals, and the electronic card is electrically connected with the card connecting terminals after being inserted into the slot.

9. The card edge connector as claimed in claim 8, wherein: the card terminal module is fixed in the card terminal fixed strip by card connection terminal insert molding after, welds the cable again, and the secondary molding inner membrance plastic forms again.

10. The card edge connector as claimed in claim 9, wherein: and after the two clamping terminal modules are inserted into the slot main body, coating and forming outer film plastic rubber again so as to tightly wrap the slot main body and fix 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. However, the card edge connector with the cable is fixed to the edge of the electronic card through the screw, so that the electronic card is inconvenient to mount and dismount.

Disclosure of Invention

The invention aims to provide a card edge connector with a cable and convenient assembly and disassembly.

In order to solve the above technical problem, the present invention provides a card edge connector, wherein a card connecting portion capable of mating with a card edge is disposed at an upper end of the card edge connector, the card connecting portion is provided with a longitudinally extending slot for an electronic card to be inserted and mated, a lower end of the card edge connector is connected to a cable and is connected to a motherboard through the cable, a laterally protruding flange is disposed at a lower side of the card connecting portion, and the flange is used for being fixed to a rack.

Through the design, the electronic card is connected with the cable through the card edge connector and is connected to the position close to the mainboard processor through the cable, so that the electronic card can be flexibly arranged on the mainboard, the miniaturization design of equipment is facilitated, and the electronic card is conveniently arranged on the position convenient for splicing; in addition, the high-speed signal of the electronic card is connected to a position as close to the processor as possible through a cable, so that the integrity of the high-speed signal is favorably kept, and the circuit design of the mainboard is simplified; and the card edge connector is fixed on the frame, and the electronic card is inserted into the card edge connector, so that the assembly and the replacement are both convenient.

Further, the rack comprises a mounting plate provided with a mounting groove, the card connector is upwards mounted in the mounting groove, the card connecting part protrudes out of the upper side of the mounting plate, and the flange abuts against the lower side of the mounting plate.

Furthermore, the flange of the card connecting part of the card edge connector is provided with a screw fastening structure which is fastened to the mounting plate upwards, and the screw fastening structure is connected through screw fastening, so that the mounting stability of the card edge connector can be ensured, and poor electric conduction caused by contact of cables can be avoided.

Further, the mounting panel is the circuit board, card edge connector still including being in the board connecting portion of card connecting portion one side, board connecting portion with the mounting panel electricity is connected. Thus, the signal or power supply of the mounting board can be connected to the main board through the board connecting part and the cable connecting the board connecting part.

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 contact surface supports the metal conducting strip of pressing in mounting panel surface setting, thereby realizes board connecting portion with the electricity of mounting panel is connected. Fastening force provided by fastening screws is fully utilized to provide acting force between the board connecting terminal and the metal conducting strip, and stable electric connection between the board connecting part and the mounting board is realized.

Further, the card connecting portion provides a PCIE card insertion fit.

Further, the card connecting portion is provided with a plurality of low-frequency signal terminals, the low-frequency signal terminals pass through the cable connect in the board connecting portion the low-frequency connecting terminal, so can make the low-frequency signal terminal of card connecting portion connect the cable, and the board connecting terminal is connected to the mounting panel through the board connecting terminal, avoids the low-frequency signal terminal lug connection of card connecting portion to the mounting panel, makes the welding process of card connecting portion only need a terminal and cable like this, makes production simpler.

Furthermore, the card connecting part comprises a slot main body and two card terminal modules arranged on two sides of the slot, each card terminal module is provided with a row of card connecting terminals, and the electronic card is electrically connected with the card connecting terminals after being inserted into the slot.

Furthermore, card terminal module is fixed the back by card connection terminal insert molding in card terminal fixed strip, welds the cable again, and the secondary molding inner membrance plastic forms again.

Furthermore, after the two clamping terminal modules are inserted into the slot main body, outer film plastic is coated and molded again so as to tightly wrap the slot main body and fix the cable.

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.