CN114256653A

CN114256653A - Card edge connector

Info

Publication number: CN114256653A
Application number: CN202010992273.4A
Authority: CN
Inventors: 秦腾; 唐文军; 杨恬
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2022-03-29
Also published as: TWM626689U

Abstract

A card edge connector comprises an insulating body, a terminal module and a grounding strip, wherein the terminal module and the grounding strip are accommodated in the insulating body; the two lengthwise side surfaces of the insulating block are inwards provided with elongated grooves and grooves which are formed by further inwards recessing from the bottom surfaces of the elongated grooves and expose the grounding terminal, the grounding strip is made of conductive plastic, is accommodated in the elongated grooves and is provided with convex parts which extend inwards and enter the grooves, the convex parts are abutted against the grounding terminal to achieve electrical connection, or gaps are reserved between the convex parts and the grounding terminal to achieve electrical connection through electromagnetic induction. So set up, through the ground strip of being made by electrically conductive plastic and the ground terminal cooperation in the terminal module, improve card edge connector high frequency performance.

Description

Card edge connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to a card edge connector, and more particularly, to a card edge connector having a ground strip made of conductive plastic.

[ background of the invention ]

Chinese utility model patent CN208797211U discloses a card edge connector, it includes lengthwise insulating casing, the fixing in insulating casing's terminal module and encircles the ground connection piece of terminal module, insulating casing are equipped with the both sides wall that extends along the lengthwise direction and form the card slot of pegging graft between the both sides wall, and the terminal module include first, second insulator and respectively the fixing in first, two rows of conductive terminal of second insulator, every row of conductive terminal include ground connection terminal, and ground connection piece is including first ground connection piece and the second ground connection piece that splices together each other, the ground connection terminal electric connection who corresponds in first ground connection piece and one row of conductive terminal. Taking the third embodiment shown in fig. 7 to 10 of the patent as an example, the grounding member is made of metal and is clamped between the side wall of the insulating housing and the terminal module, and the card edge connector of the embodiment has two plugging ends at the top and the bottom. However, the metal grounding member is easy to increase the cost, and may affect the interference combination between the terminal module and the insulating housing, on the other hand, the conductive terminal has a contact portion exposed outside the insulating housing, and when the circuit board is butted, the contact portion of the terminal exposed outside is easy to generate a short circuit problem caused by displacement.

Therefore, there is a need to provide a card edge connector with an improved structure to overcome the above-mentioned drawbacks.

[ summary of the invention ]

The technical problem to be solved by the present invention is to provide a card edge connector, wherein the grounding strip is made of conductive plastic.

In order to solve the technical problems, the invention can adopt the following technical scheme:

a card edge connector comprises an insulating body, a terminal module and a grounding strip, wherein the terminal module and the grounding strip are accommodated in the insulating body; the two lengthwise side surfaces of the insulating block are inwards provided with elongated grooves and grooves which are formed by further inwards recessing from the bottom surfaces of the elongated grooves and expose the grounding terminal, the grounding strip is made of conductive plastic, is accommodated in the elongated grooves and is provided with convex parts which extend inwards and enter the grooves, the convex parts are abutted against the grounding terminal to achieve electrical connection, or gaps are reserved between the convex parts and the grounding terminal to achieve electrical connection through electromagnetic induction.

Compared with the prior art, the high-frequency effect of the card edge connector is improved by electrically connecting the grounding terminal in the terminal module by the grounding strip made of conductive plastic.

[ description of the drawings ]

Fig. 1 is a perspective view of the card edge connector of the present invention.

Fig. 2 is a perspective view of another angle shown in fig. 1.

Fig. 3 is an exploded view of the card edge connector shown in fig. 1.

Fig. 4 is a partial perspective view of the dielectric body of fig. 3.

Fig. 5 is an exploded view of the terminal module of fig. 3.

Fig. 6 is a partially exploded view of the terminal module shown in fig. 5.

Fig. 7 is a partial exploded view from another angle as shown in fig. 6.

Fig. 8 is a cross-sectional view taken along the dashed line a-a shown in fig. 1.

Fig. 9 is a cross-sectional view taken along the dashed line B-B shown in fig. 1.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Referring to fig. 1 to 9, the present invention discloses a card edge connector 100, which is a pci express connector, including an insulating body 1, a terminal module 2 accommodated in the insulating body 1, and a ground strip 3. The housing 1 includes two longitudinal sidewalls 11 and a slot 10 between the sidewalls 11. The terminal module 2 includes an insulating block 4 and two rows of terminals 5 fixed to the insulating block 4. Each row of terminals 5 comprises several ground terminals 51 and several signal terminals 52. The insulating block 4 has elongated grooves 41 recessed inward on both longitudinal side surfaces thereof and grooves 42 formed by further recessed inward from the bottom surfaces of the elongated grooves 41 to expose the ground terminals 51. The ground strip 3 is made of conductive plastic, and is accommodated in the elongated slot 41 and has a protrusion 32 extending inward and entering the groove 42, the protrusion 32 abuts against the ground terminal 51 to achieve electrical connection, or a gap is left between the protrusion 32 and the ground terminal 51 to match through electromagnetic induction, fig. 8 clearly shows the manner in which the protrusion 32 abuts against the ground terminal 51, and the manner in which the gap is left between the protrusion 32 and the ground terminal is not shown in the figure. Meanwhile, it should be noted that the ground strip 3 may be made of conductive plastic and then assembled to the elongated slot 41, or conductive glue may be poured into the elongated slot 41 and cured to form the ground strip 3. With this arrangement, the high-frequency performance of the card edge connector is improved by the grounding strip 3 engaging with the grounding terminal 51.

Each of the long grooves 41 penetrates both end surfaces of the insulating block 4 in the longitudinal direction, the ground strip 3 includes a body portion 31 received in the long groove 41 and the above-mentioned protrusion 32 formed to extend inward from the long groove 41, and the protrusion 32 is of a type to be fitted to a single ground terminal 51 and of a type to be fitted to two adjacent ground terminals 51. The insulating body 1 is concavely provided with a mounting groove 13 opposite to the slot 10, and the terminal module 2 is mounted to the mounting groove 13.

The terminal 5 includes a first contact portion 53 extending upward and exposed to the slot 10, a second contact portion 54 extending downward beyond the mounting groove 13, and a connecting portion 55 connected between the first and

second contact portions

53, 54, wherein the connecting portion 55 is fixed to the insulating block 4, so that the card edge connector 100 has a plug end at the first contact portion 53 and another plug end at the second contact portion 54. Each side wall 11 is provided with a terminal groove 14 for receiving the terminal 5. The terminal slot 14 extends inward from the sidewall 11 to a partition wall 141, the partition wall 141 extends downward to the mounting slot 13, and the plane of the bottom edge of the partition wall 141 forms the inner bottom surface 131 of the mounting slot 13. The convex portion 32 abuts against the connecting portion 55 of the ground terminal 51.

The insulating block 4 has two rows of spacing plates 43 projecting downward from the lower surface thereof, and the second contact portions 54 of the adjacent terminals 5 of each row are separated by the spacing plates 43. The lower surface of the insulating block 4 is positioned in the mounting groove 13, and the partition plate 43 extends downward from the lower surface of the insulating block 4 beyond the mounting groove 13. The two rows of spacers 43 form an elongated space therebetween for the second contact portion 54 to be connected to an external circuit board. The first contact portions 53 are located in the slot 10, and each first contact portion 53 is separated by the partition 141 of the terminal slot 14, so as to ensure that the terminal 5 can be stably connected with the butt circuit board, and the second contact portion 54 is exposed outside the insulating body 1, so that the second contact portion 54 is separated by the partition 43 to be adjacent to the second contact portion 54, thereby preventing contact errors caused by the deviation of the second contact portion 54, and adjusting the impedance of the terminal 5 through the partition 43, the existing impedance adjustment generally mainly adjusts the width of the terminal, easily generates terminals of various types, and is not beneficial to product serialization, therefore, the partition 53 prevents the contact portion of the terminal from moving, and also can expand the impedance adjustment prevention mode, and the auxiliary card edge connector obtains better performance.

The insulating body 1 further comprises two end walls 12 connected with the side walls 11 and a bottom plate 15 connected between the two end walls 12, wherein the bottom plate 15 extends from the side edge thereof to form a plurality of ribs 16 connected with the two side walls 11. The insulating block 4 is concavely provided with a positioning groove 44 in the middle of the top surface thereof along the longitudinal direction and a plurality of through grooves 45 extending outwards from the positioning groove 44 and penetrating through the longitudinal outer side surface of the insulating block 4, the positioning groove 44 is abutted against the lower surface of the bottom plate 15, and the through grooves 45 are matched with the ribs 16 for positioning. The positioning groove 44 is located between the connecting portions 55 of the two rows of terminals 5. The lower surface of the bottom plate 15 and the lower surface of the rib 16 are both positioned below the bottom surface 131 in the mounting groove 13. When the terminal module 2 is mounted to the mounting groove 13 from bottom to top, the top surface of the insulating block 4 abuts against the inner bottom surface 131 of the mounting groove 13, and the positioning groove 44 and the through groove 45 abut against the lower surface of the bottom plate 15 and the lower surface of the protruding rib 16, respectively, so as to achieve positioning and assembling. The width of the bottom plate 15 is smaller than the width of the slot 10 in the transverse direction perpendicular to the longitudinal direction.

The insulating block 4 includes a first insulating block 46 and a second insulating block 47 assembled with each other. The first and second

insulating blocks

46, 47 are provided with a locking groove 48 and a locking block 49 at the inner side thereof, which are matched with each other, to form the insulating block 4, and the locking groove 48 is formed between the adjacent locking blocks 49. In the present embodiment, the locking groove 48 and the locking block 49 are T-shaped when viewed along the vertical direction, and fig. 6 and 7 are clearly seen. The locking groove 48 and the locking block 49 are both arranged at the positioning groove 44, and the top surfaces of the locking groove 48 and the locking block 49 are abutted against the lower surface of the bottom plate 15. Because first,

second insulating block

46, 47 form insulating block 4 for assembling along vertical direction, draw-in groove 48 and fixture block 49 in the positioning groove 44 upwards support and lean on to bottom plate 15 spacing, prevent that first, second

insulating block

46, 47 from assembling not in place. The first and

second insulating blocks

46, 47 hold a row of terminals 5, respectively, and each have a row of spacing plates 43 for spacing adjacent terminals 5.

The above embodiments are preferred embodiments of the present invention. Rather than all embodiments, and all equivalent variations to those skilled in the art can be made by reading the specification without departing from the scope of the invention.

Claims

1. A card edge connector comprises an insulating body, a terminal module and a grounding strip, wherein the terminal module and the grounding strip are accommodated in the insulating body; the method is characterized in that: the two lengthwise side surfaces of the insulating block are inwards provided with elongated grooves and grooves which are formed by further inwards recessing from the bottom surfaces of the elongated grooves and expose the grounding terminal, the grounding strip is made of conductive plastic, is accommodated in the elongated grooves and is provided with convex parts which extend inwards and enter the grooves, the convex parts are abutted against the grounding terminal to achieve electrical connection, or gaps are reserved between the convex parts and the grounding terminal to achieve electrical connection through electromagnetic induction.

2. The card edge connector according to claim 1, wherein: the insulating body is concavely provided with a mounting groove opposite to the slot, and the terminal module is mounted in the mounting groove.

3. The card edge connector as claimed in claim 2, wherein: the terminal comprises a first contact part extending upwards and exposed in the slot, a second contact part extending downwards and exceeding the mounting groove and a connecting part connected between the first contact part and the second contact part, and the connecting part is fixed on the insulating block.

4. The card edge connector as claimed in claim 3, wherein: two rows of spacing plates are protruded downwards from the lower surface of the insulating block, and each row of adjacent terminals is separated by the spacing plates.

5. The card edge connector as claimed in claim 4, wherein: the lower surface of insulating block is located in the mounting groove, the space bar is from insulating block lower surface downwardly extending surpasss the mounting groove.

6. The card edge connector as claimed in claim 5, wherein: the insulating body further comprises two end walls connected with the side walls and a bottom plate connected between the two end walls, and a plurality of ribs connected with the side walls are formed by extending the bottom plate from the side edges of the bottom plate.

7. The card edge connector as claimed in claim 6, wherein: the insulating block is equipped with positioning groove and outwards extends from positioning groove along lengthwise direction at its top surface intermediate position and runs through a plurality of logical grooves of insulating block lengthwise lateral surface, positioning groove support lean on extremely the bottom plate lower surface, lead to the groove with the rib cooperation location.

8. The card edge connector as claimed in claim 7, wherein: in a transverse direction perpendicular to the longitudinal direction, the width of the base plate is smaller than the width of the slot.

9. The card edge connector as claimed in claim 6, wherein: the insulating block comprises a first insulating block and a second insulating block, wherein the first insulating block and the second insulating block are respectively provided with a clamping groove and a clamping block which are matched with each other at the inner sides of the first insulating block and the second insulating block so as to form the insulating block, and the clamping groove and the top surface of the clamping block are abutted against the lower surface of the bottom plate.

10. The card edge connector as claimed in claim 9, wherein: the first and second insulating blocks hold a row of the terminals, respectively, and each have a row of spacer plates for spacing adjacent ones of the terminals.