CN217691951U - Card edge connector - Google Patents

Abstract

A card edge connector includes an insulating housing and two terminal modules. The insulating shell extends along a length direction and comprises a clamping edge slot and a terminal retaining seat mounting slot. Each terminal module comprises a terminal holding seat extending along the length direction and arranged in the terminal holding seat mounting groove, a plurality of conductive terminals fixed on the terminal holding seat at intervals along the length direction in a row, and a common grounding shielding piece arranged on the terminal holding seat, wherein each conductive terminal comprises a plurality of signal terminals and a plurality of grounding terminals, the terminal holding seat is provided with a positioning groove extending along the length direction, and a plurality of grooves communicated with the positioning groove and respectively corresponding to the grounding terminals. The common grounding shielding piece comprises a sheet body extending along the length direction and inserted into the positioning groove, a plurality of grounding elastic arms extending from the sheet body towards the corresponding groove and correspondingly abutted against the grounding terminal, and at least one shielding sheet extending from the sheet body towards the plugging surface or the mounting surface and abutting against the terminal retaining seat.

Description

Card edge connector

Technical Field

The utility model relates to a connector especially relates to a card edge connector.

Background

U.S. patent No. US8,764,464 discloses an electrical connector that includes a ground coupling element in the form of a second exemplary ground shorting bar constructed in accordance with an alternative embodiment. The ground shorting bars are connected at different locations along the ground contacts. It should be appreciated that while the second exemplary ground shorting bar is connected to one location on the ground contact, the shorting bar may alternatively be connected to more than one location on the ground contact.

In addition, U.S. patent No. US9,640,915, chinese patent publication No. CN109962353B and chinese utility model publication No. CN211957998U also disclose shielding elements similar to the above-described ground coupling elements, however, the shielding elements still have room for optimization in order to further shield electromagnetic interference and reduce crosstalk between pairs of signal terminals.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a card edge connector capable of improving the problems of the prior art.

Accordingly, in some embodiments, the card edge connector of the present invention includes an insulating housing and two terminal modules. The insulating shell extends along a length direction and comprises an inserting surface and a mounting surface which are positioned on two opposite sides, a clamping edge slot with an opening facing the inserting surface, and a terminal holding seat mounting groove with an opening facing the mounting surface and communicated with the clamping edge slot. Each terminal module comprises a terminal holding seat, a plurality of conductive terminals and a common grounding shielding piece, wherein the terminal holding seat extends along the length direction and is arranged in the terminal holding seat mounting groove, the conductive terminals are fixed on the terminal holding seat at intervals along the length direction in a row, the common grounding shielding piece is arranged on the terminal holding seat, the conductive terminals comprise a plurality of signal terminals and a plurality of grounding terminals, the terminal holding seat is provided with a positioning groove extending along the length direction, and a plurality of open grooves which are communicated with the positioning groove and respectively correspond to the grounding terminals. The common grounding shield comprises a sheet body, a plurality of grounding elastic arms and at least one shielding sheet, wherein the sheet body extends along the length direction and is inserted into the positioning groove, the grounding elastic arms extend from one side of the sheet body to the corresponding plurality of grooves respectively and correspondingly abut against the plurality of grounding terminals respectively, and the shielding sheet extends from the other side of the sheet body to one of the plugging surface and the mounting surface and abuts against the terminal retaining seat.

In some embodiments, each of the conductive terminals has a fixing portion fixed to the terminal holder, an elastic arm portion extending from the fixing portion to the card edge slot, a contact portion at a distal end of the elastic arm portion, and a tail portion extending from the fixing portion to the mounting surface of the insulative housing.

In some embodiments, the terminal holder has at least one recess for receiving the at least one shielding plate.

In some embodiments, the common ground shield includes one said shield blade, and the terminal holder has one said recess corresponding to receive the shield blade.

In some embodiments, the common ground shield includes a plurality of said shield blades, and the terminal holder has one said recess for receiving a corresponding plurality of said shield blades.

In some embodiments, the common ground shield includes a plurality of said shield blades spaced side by side along the length.

In some embodiments, the terminal holder has a plurality of recesses for respectively receiving the plurality of shield pieces.

In some embodiments, the metal shell is disposed outside the insulating housing.

The utility model discloses an at least shielding piece that this common ground shield extended towards this interface and this installation face one of them and just the butt this terminal keeps the seat can shield electromagnetic interference and reduce the crosstalk between the signal terminal pair further.

Drawings

Other features and advantages of the present invention will become apparent from the following description of the embodiments with reference to the accompanying drawings, in which:

fig. 1 is a perspective view of a first embodiment of the card edge connector of the present invention;

FIG. 2 is an exploded perspective view of the first embodiment;

FIG. 3 is another exploded perspective view of the first embodiment from another perspective;

fig. 4 is an exploded perspective view of the insulative housing and terminal module of the first embodiment;

fig. 5 is another exploded perspective view of the insulative housing and terminal module of the first embodiment from another perspective;

fig. 6 is an exploded perspective view of the terminal module of the first embodiment;

fig. 7 is another exploded perspective view of the terminal module of the first embodiment from another perspective;

FIG. 8 is a cross-sectional view of the first embodiment;

fig. 9 is a side view of the terminal module of the first embodiment;

fig. 10 is a side view of the terminal module of the first embodiment with the common ground shield of the terminal module of the first embodiment omitted;

fig. 11 is a perspective view of a terminal module of a second embodiment of the card edge connector of the present invention;

fig. 12 is an exploded perspective view of the terminal module of the second embodiment;

fig. 13 is a side view of the terminal module of this second embodiment;

fig. 14 is a perspective view of a terminal module of a third embodiment of the card edge connector of the present invention;

fig. 15 is an exploded perspective view of the terminal module of the third embodiment;

fig. 16 is a side view of the terminal module of the third embodiment;

FIG. 17 is a cross-sectional view of the third embodiment;

fig. 18 is a perspective view of a terminal module of a fourth embodiment of the card edge connector of the present invention;

fig. 19 is an exploded perspective view of the terminal module of the fourth embodiment; and

fig. 20 is a side view of the terminal module of this fourth embodiment.

The reference numbers are as follows:

100. card edge connector

1. Insulating shell

11. Plug-in surface

12. Mounting surface

13. Card edge slot

14. Terminal holder mounting groove

15. Buckling hole

16. Fastening block

2. Terminal module

21. Terminal holder

211. Fastening block

212. Locating slot

213. Slotting

214. Combination structure

215. Concave part

22. Conductive terminal

221. Fixing part

222. Elastic arm part

223. Contact part

224. Tail part

23. Common ground shield

231. Sheet body

232. Grounding elastic arm

233. Shielding sheet

3. Metal shell

31. Buckling hole

D1 Front-back direction

D2 Up and down direction

D3 Left and right direction

22a signal terminal

22b ground terminal

Detailed Description

Before the present invention is described in detail, it should be noted that in the following description, like elements are represented by like reference numerals.

Referring to fig. 1 to 5, a first embodiment of the card edge connector 100 of the present invention includes an insulating housing 1, two terminal modules 2 and a metal shell 3.

The insulating housing 1 is made of an insulating material such as plastic, for example, and the insulating housing 1 extends along a front-back direction D1 (the direction indicated by the arrow is front, and the reverse direction is back), where the front-back direction D1 is equal to the length direction of the insulating housing 1. The insulating housing 1 includes an insertion surface 11 and an installation surface 12 on opposite sides, a card edge slot 13 opened toward the insertion surface 11, and a terminal holder installation slot 14 opened toward the installation surface 12 and communicated with the card edge slot 13. In the first embodiment, the mating surface 11 and the mounting surface 12 are respectively located at the top and the bottom in a vertical direction D2 (the direction indicated by the arrow is up, and the direction is reverse to down), the card edge slot 13 faces upward, and the terminal holder mounting groove 14 faces downward.

Referring to fig. 4 to 7, the two terminal modules 2 are arranged side by side along a left-right direction D3 (the direction indicated by the arrow is right, and the reverse direction is left) in the insulating housing 1. Each of the terminal modules 2 includes a terminal holder 21 extending in the front-rear direction D1 (length direction) and mounted in the terminal holder mounting groove 14, a plurality of conductive terminals 22 fixed to the terminal holder 21 in a row at intervals in the front-rear direction D1 (length direction), and a common ground shield 23 disposed on the terminal holder 21.

Referring to fig. 8, each of the conductive terminals 22 has a fixing portion 221 fixedly embedded in the terminal holder 21 by insert molding (insert molding), an elastic arm portion 222 extending upward from the fixing portion 221 to the card edge slot 13, a contact portion 223 at an end of the elastic arm portion 222, and a tail portion 224 extending downward from the fixing portion 221 to the mounting surface 12 of the insulating housing 1, and the tail portions 224 of the conductive terminals 22 are soldered to a circuit board (not shown) by Surface Mount Technology (SMT), for example. Referring to fig. 9 and 10, the plurality of conductive terminals 22 include a plurality of signal terminals 22a and a plurality of ground terminals 22b, and the plurality of signal terminals 22a form a plurality of signal terminal pairs separated by the plurality of ground terminals 22 b.

Referring to fig. 4 to 7, the terminal holder 21 has a plurality of latching blocks 211 that are latched to the plurality of latching holes 15 of the insulating housing 1, a positioning groove 212 that extends along the front-back direction D1 (length direction), and a plurality of slots 213 that communicate with the positioning groove 212 and respectively correspond to the plurality of ground terminals 22 b. In the first embodiment, the terminal holding base 21 further has a coupling structure 214 arranged along the front-rear direction D1, and the coupling structures 214 of the terminal holding bases 21 of the two terminal modules 2 are coupled to each other in a manner of facing each other and fitting with projections and recesses, and the positioning groove 212 and the slit groove 213 of the terminal holding bases 21 of the two terminal modules 2 face away from each other toward the outside in the left-right direction D3.

Referring to fig. 4, 6, and 8 to 10, the common ground shield 23 includes a sheet 231 extending in the front-rear direction D1 (length direction) and inserted into the positioning groove 212 in the left-right direction D3, a plurality of ground spring arms 232 extending upward and inward from inner edges of the sheet 231 in the left-right direction D3 toward the corresponding slots 213, and abutting against the ground terminals 22b, respectively, and a plurality of shield pieces 233 extending downward from outer edges of the sheet 231 in the left-right direction D3 toward the mounting surface 12 of the insulating housing 1 and abutting against the terminal holder 21. The plurality of shield pieces 233 are arranged at intervals in the front-rear direction D1 (longitudinal direction), and the terminal holder 21 further includes a plurality of recesses 215 for respectively accommodating the plurality of shield pieces 233. For example, in the first embodiment, the positions of the plurality of shielding pieces 233 correspond to the plurality of ground terminals 22b, respectively, but not limited thereto. In addition, in other embodiments, the shielding plate 233 may also extend toward the mating face 11 of the insulating housing 1, that is, the shielding plate 233 of the common ground shield 23 extends toward one of the mating face 11 and the mounting face 12 and abuts against the terminal holding seat 21.

The common ground shield 23 can electrically connect the plurality of ground terminals 22b to each other, shield electromagnetic interference and reduce crosstalk between the signal terminal pairs, and the common ground shield 23 can further shield electromagnetic interference and reduce crosstalk between the signal terminal pairs by extending toward one of the mating face 11 and the mounting face 12 and abutting against the shield plate 233 of the terminal holding base 21.

Referring to fig. 1 to 3, the metal shell 3 is disposed outside the insulating housing 1 in a covering manner and can generate an electromagnetic interference shielding effect, but the metal shell 3 may also be omitted in other embodiments, and is not limited to the first embodiment. In the first embodiment, the insulating housing 1 further includes a fastening block 16, the metal shell 3 includes a fastening hole 31, and the fastening block 16 is fastened to the fastening hole 31, so that the metal shell 3 is assembled to the insulating housing 1.

Referring to fig. 11 to 13, a second embodiment of the card edge connector 100 of the present invention is different from the first embodiment in that the number of the shielding plates 233 of the common ground shield 23 is only one, and the number of the concave portions 215 of the terminal holding seat 21 for receiving the shielding plates 233 is only one, as the shielding plates 233 extend in the front-back direction D1 (length direction).

Referring to fig. 14 to 17, a difference between the third embodiment and the first embodiment of the card edge connector 100 of the present invention is that the shielding plate 233 of the common ground shielding element 23 extends upward from the plate 231 toward the insertion surface 11 of the insulating housing 1 and abuts against the terminal holding seat 21. The positions of the plurality of shield pieces 233 substantially correspond to the signal terminal pairs, respectively, but the present invention is not limited thereto. In addition, in the third embodiment, the number of the concave portions 215 of the terminal holding base 21 for accommodating the plurality of shield pieces 233 is only one.

Referring to fig. 18 to 20, a difference between the fourth embodiment and the second embodiment of the card edge connector 100 of the present invention is that the number of the shielding plates 233 of the common ground shield 23 is only one, and the number of the concave portions 215 of the terminal holding seat 21 for receiving the shielding plates 233 is also only one, in which the shielding plates 233 extend in the front-back direction D1 (length direction).

To sum up, the present invention discloses an at least one shielding plate 233 extending towards one of the insertion surface 11 and the mounting surface 12 and abutting against the terminal holding base 21 of the common ground shield 23, which can further shield the electromagnetic interference and reduce the crosstalk between the signal terminal pairs.

However, the above description is only an example of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still included in the scope of the present invention.

Claims (8)

1. An edge connector, comprising:

the insulating shell extends along a length direction and comprises an inserting surface and a mounting surface which are positioned on two opposite sides, a clamping edge slot with an opening facing the inserting surface, and a terminal holding seat mounting groove with an opening facing the mounting surface and communicated with the clamping edge slot; and

two terminal modules, each terminal module includes a terminal holding seat extending along the length direction and arranged in the terminal holding seat mounting groove, a plurality of conductive terminals fixed on the terminal holding seat in a row at intervals along the length direction, and a common grounding shielding piece arranged on the terminal holding seat, the plurality of conductive terminals include a plurality of signal terminals and a plurality of grounding terminals, the terminal holding seat has a positioning groove extending along the length direction, and a plurality of open grooves communicated with the positioning groove and respectively corresponding to the plurality of grounding terminals;

the common grounding shield comprises a sheet body, a plurality of grounding elastic arms and at least one shielding sheet, wherein the sheet body extends along the length direction and is inserted into the positioning groove, the plurality of grounding elastic arms extend from one side of the sheet body to the corresponding plurality of grooves respectively and correspondingly abut against the plurality of grounding terminals respectively, and the at least one shielding sheet extends from the other side of the sheet body to one of the plugging surface and the mounting surface and abuts against the terminal retaining seat.

2. The card edge connector as claimed in claim 1, wherein each of the conductive terminals has a fixing portion fixed to the terminal holder, a resilient arm portion extending from the fixing portion to the card edge slot, a contact portion at a distal end of the resilient arm portion, and a tail portion extending from the fixing portion to the mounting surface of the insulative housing.

3. The card edge connector as claimed in claim 1, wherein the terminal holder has at least one recess for receiving the at least one shielding plate respectively.

4. The card edge connector as claimed in claim 1, wherein the common ground shield includes one of said shield blades, and the terminal holder has a recess for receiving the shield blade.

5. The card edge connector as claimed in claim 1, wherein the common ground shield comprises a plurality of said shield blades, and the terminal holder has a recess for receiving a corresponding plurality of said shield blades.

6. The card edge connector as claimed in claim 1, wherein the common ground shield includes a plurality of said shield blades spaced side by side along the length direction.

7. The card edge connector as claimed in claim 6, wherein the terminal holder has a plurality of recesses for receiving a plurality of the shield plates, respectively.

8. The card edge connector as claimed in claim 1, further comprising a metal shell disposed outside the insulating housing.

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