TWM461191U - Card edge connector - Google Patents

Abstract

A card edge connector comprises an insulation body, two lock catches movably connected to two ends of the insulation body in a pin joint manner, a plurality of conductive terminals and a grounding pin arranged on the insulation body and at least one grounding component arranged on the lock catches. Each grounding pin is provided with a fixed pin and a first contact site, and the fixed pin is correspondingly fixedly arranged on a circuit board to achieve electric grounding connection; each grounding element is provided with a connection portion, a second contact site positioned at the lower end of the connection portion and a third contact site positioned at the upper end of the connection portion; the second contact site is contacted to the first contact site of the corresponding grounding pin to achieve electric connection, the third contact site is correspondingly contacted to the grounding contact on a circuit card, and thereby the grounding pin is electrically connected to the ground. According to the card edge connector, an extra grounding method is provided for the circuit card, the grounding effect is improved, simultaneously, the layout of a circuit board is maintained without change, and the reconstruction difficulty and cost are low.

Description

Card edge connector

The present invention relates to a card edge connector, and more particularly to a card edge connector having an improved ground structure.

Chinese patent CN03265098.1 discloses a card edge connector comprising an elongated insulating body, a plurality of conductive terminals and two locking devices, wherein the insulating body has a slot extending along a longitudinal direction thereof and a plurality of terminal passages, and is insulated Each of the two ends of the body is provided with a pair of upwardly extending arms, and each of the pair of arms has a receiving space therebetween. The conductive terminals are received in the terminal passages of the insulating body, and the locking device includes a receiving space received in the insulating body. a main body portion pivotally connected to the arm portion and a locking portion extending from the main body portion; an angle between the extending direction of the locking portion and the axis of the main body portion is less than 90 degrees. The bottom of the card edge connector is provided with a plurality of holding means for firmly holding the insulating body to the circuit board, but the holding means only serves to hold and does not have a grounding function. When a circuit card such as a DIMM (Dual Inline Memory Module) is inserted into the slot, the circuit card passes through the card edge connector via the gold finger on the circuit card. The grounding function of the grounding terminal is connected to the grounding contact on the circuit board to achieve grounding. This existing grounding path is very small due to the small conductive terminals. For this reason, there will be a large grounding resistance, which will cause a large potential difference between the circuit card and the circuit board. This potential difference easily causes the circuit card to generate erroneous operations during processing. It can be seen that it is necessary to improve the grounding path between the existing circuit card and the circuit board.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art described above, and to provide a card edge connector capable of providing an additional ground path to reduce the potential difference between the circuit card and the circuit board, improving the grounding effect and thereby improving the circuit. The reliability of the card work.

The present invention provides a card edge connector which can be soldered to a circuit board and can be correspondingly inserted into a circuit card for the above technical problem; the card edge connector includes an insulative body, and the insulative body is provided along the longitudinal a slot extending in a long direction, and a latching component is pivotally connected to each of the two ends of the slot; a plurality of conductive terminals are respectively mounted on the two sides of the slot of the insulative housing; the card edge connector further includes At least one grounding pin and at least one grounding component; the at least one grounding pin is mounted on the insulative housing, each of the grounding pins has a fixing leg and a first contact portion, and the fixing leg can be correspondingly fixed to the circuit board Electrically grounded; the at least one grounding element is correspondingly mounted on the locking component, each grounding component has a connecting portion, a second contact portion at a lower end of the connecting portion, and an upper end of the connecting portion a third contact portion that is in elastic contact with the first contact portion of the corresponding ground pin to be electrically connected together, and the third contact portion can correspond to the connection on the circuit card Contacting the contact, so that by the ground pins is electrically grounded.

The locking component has a pivoting portion pivotally connected to the insulating body and a latching portion for correspondingly engaging the circuit card; the third contact portion of the grounding component is at least one contact extending from the connecting portion An arm that is fixed to the latching portion of the latching member.

a latching portion of the latching member is formed with a clamping slot on a side facing the circuit card to clamp the circuit card; the grounding member has two contact arms, which are respectively disposed on both sides of the clamping slot to The circuit card is touched on both sides.

Each of the contact arms includes a first fixing portion and a contact portion further extending from the first fixing portion, and a second fixing portion further extending from the contact portion, the first fixing portion and the second fixing portion The contact portion protrudes into the clamping slot and can be electrically connected to the circuit card to establish a grounding path between the circuit card and the circuit board.

a latching portion of the latching member is disposed on each side of the clamping slot with a mounting slot, and the first fixing portion and the second fixing portion of the two contact arms of the grounding member are correspondingly inserted and fixed In the installation slot.

A barb protrudes from the first fixing portion of the contact arm, and the barb is interfered with the mounting groove of the locking component.

The latching component is recessed on a side facing away from the circuit card, and the connecting portion of the grounding component is correspondingly received in the receiving slot of the latching component. The two contact arms extend inwardly from the upper end of the connecting portion. The installation is installed on both sides of the clamping groove.

The second contact portion of the grounding element is from the bottom end of the connecting portion The first contact portion of the grounding pin includes a first extending portion extending outward from an upper portion of the fixing leg and a second extending portion extending further upward from the first extending portion The inner side surface of the second extension portion is in movable elastic contact with the second contact portion of the grounding member.

The fixing leg includes two elastic arms extending downwardly and spaced apart by a distance, and each of the two elastic arms is provided with a fixed barb.

The fixing leg has a flat shape, and a fixed barb protrudes from each of the two sides.

Compared with the prior art, the card edge connector of the present invention has a grounding component, and the grounding pin has a first contact portion electrically connected to the grounding component and is electrically grounded through the circuit board, so that the grounding component and the grounding can be The pins provide an additional ground path for the circuit card, reducing the potential difference between the circuit card and the board and improving the reliability of the circuit card operation. In addition, the grounding design does not need to change the original layout of the circuit board, and the welding hole corresponding to the original pin can be used to improve the grounding effect of the circuit card, and the transformation difficulty and cost are low.

1‧‧‧Insulating body

10‧‧‧ card edge connector

11‧‧‧ base

111‧‧‧Slot

112‧‧‧Terminal channel

12‧‧‧Lock seat

13‧‧‧Locking components

131‧‧‧ Main body

132‧‧‧ pivotal department

133‧‧‧Card

134‧‧‧Operation Department

135‧‧‧Top

136‧‧‧Clamping slot

137‧‧‧Installation slot

138‧‧‧ receiving trough

20‧‧‧ boards

201‧‧‧Terminal pad

202‧‧‧Grounding hole

3, 3a‧‧‧ grounding pins

30‧‧‧ circuit card

301‧‧‧The first golden finger

302‧‧‧Card Department

303‧‧‧ Grounding contacts

32, 32a‧‧‧ fixed feet

321‧‧‧Flexible arm

322‧‧‧Flexible arm

323, 323a‧‧ ‧ fixed spurs

33‧‧‧First contact

331‧‧‧First Extension

332‧‧‧Second extension

4‧‧‧ Grounding components

41‧‧‧Connecting Department

42‧‧‧Second contact

43‧‧‧ Third contact

432‧‧‧Contact arm

4321‧‧‧First fixed part

4322‧‧‧Contacts

4323‧‧‧Second fixed department

4325‧‧‧ barbed

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

Figure 2 is an exploded perspective view of the card edge connector of Figure 1.

3 and 4 are perspective exploded views of two different viewing angles of the latching member, the grounding pin and the grounding member of the card edge connector of FIG. 1, wherein the grounding pin has a first embodiment.

5 is an exploded perspective view of the latching member, the grounding pin and the grounding member of the card edge connector of FIG. 1, wherein the grounding pin has a second embodiment.

6 is an exploded perspective view of the card edge connector of FIG. 1 and a circuit board and a DIMM circuit card.

Figure 7 is a perspective view of the card edge connector, circuit board and DIMM circuit card of Figure 1.

Figure 8 is a side elevational view of the card edge connector and circuit board and DIMM circuit card of Figure 1.

Figure 9 is a cross-sectional view taken along line A-A of Figure 8.

Figure 10 is a partial enlarged view of the D area of Figure 9.

The present invention will be further elaborated below in conjunction with the accompanying drawings.

Referring to FIG. 1 to FIG. 5 , the card edge connector 10 of the present invention generally comprises: an insulative housing 1 , a plurality of conductive terminals (not shown) mounted on the insulative housing 1 , and two made of conductive metal. One grounding pin 3 and two grounding elements 4 (only one grounding pin 3 and one grounding element 4 are shown). Referring again to FIGS. 6-10, the card edge connector 10 of the present invention can be soldered to a circuit board 20 and can be coupled to a circuit card 30 (eg, a DIMM circuit card).

The insulative housing 1 has a generally rectangular parallelepiped configuration with an elongated base portion 11 and two latch seats 12 at opposite ends of the base portion 11. The base 11 is provided with a slot 111 extending along the longitudinal direction thereof for the circuit The card 30 is plugged in and a plurality of terminal passages 112 are provided on both sides of the slot 111. A latching member 13 is pivotally connected to each of the latching seats 12 at the two ends of the slot 111. Each of the latching members 13 has a body portion 131 in the shape of a curved knife, and is protruded from the lower sides of the main body portion 131. The two pivoting portions 132 are disposed at a top end of the main body portion 131, a locking portion 133, an operating portion 134 disposed above the engaging portion 133, and a top portion disposed at a bottom end of the main portion 131 135. Each of the locking elements 13 is formed with a clamping groove 136 in the middle toward the inner side of the circuit card 30 to clamp the circuit card 30. The engaging portion 133 is recessed on the side walls of the two sides of the clamping groove 136 to form two mounting grooves 137. Each of the locking elements 13 is further recessed to form a receiving groove 138 on the outer side of the circuit card 30.

Each of the conductive terminals is correspondingly disposed in a terminal passage 112 of the insulative housing 1 and has a pair of connecting portions and a soldering portion. The mating portion protrudes into the slot 111 of the insulative housing 1 to form a circuit card 30. In electrical contact, the soldering portion passes through the bottom surface of the base portion 11 of the insulative housing 1 to be soldered to the circuit board 20.

The two grounding pins 3 are corresponding to the bottoms of the two locking seats 12 of the insulating body 1. In the first embodiment of the grounding pins 3 (as shown in FIGS. 3 and 4), each of the grounding pins 3 has a fixing leg 32 and a first contact portion 33 extending upward from the fixing leg 32. The fixing legs 32 include two elastic arms 321 and 322 extending downwardly and spaced apart from each other. A protruding burr 323 protrudes outwardly from the outer sides of the two elastic arms 321 and 322. The first contact portion 33 includes a first extending portion 331 extending horizontally outward from the fixing leg 32 and further by the first extending portion 331 A second extension 332 extending upward is bent upward. Referring to FIG. 5, in the second embodiment of the grounding pin 3a, the grounding pin 3a has a fixing leg 32a in the shape of a flat plate, and the fixing burr 323a protrudes outward from the two sides of the fixing leg 32a, respectively. A first contact portion 33 extending upward from the fixing leg 32a.

The grounding element 4 is fixedly mounted on the locking element 13 and can follow a pivoting movement of the locking element 13. Each of the grounding elements 4 has a connecting portion 41, a second contact portion 42 at the lower end of the connecting portion 41, and a third contact portion 43 at the upper end of the connecting portion 41. The second contact portion 42 extends obliquely outwardly and downwardly from the bottom end of the connecting portion 41 and is movably elastically contacted with the first contact portion 33 of the corresponding grounding pin 3 to be electrically connected together. The third contact portion 43 is mounted on the corresponding latching member 13 and can be electrically connected to the grounding contact 303 on the circuit card 30 by contact. The connecting portion 41 is correspondingly received in the receiving groove 138 of the locking element 13 . The second contact portion 42 extends obliquely outwardly and downwardly from the lower end of the connecting portion 41, and can be in contact with the inner side surface of the second extending portion 332 corresponding to the grounding pin 3 to realize the electric power of the grounding member 4 and the grounding pin 3. Sexual connection. The third contact portion 43 is bent horizontally inwardly from the top end of the connecting portion 41. The third contact portion 43 includes the inward bending of the connecting portion 41 in the embodiment. The two contact arms 432 are shown, and in other embodiments (not shown) there may be only one contact arm 432. The two contact arms 432 are respectively fixed on both sides of the clamping groove 136 of the locking component 13, which can contact the grounding contact 303 of the circuit card 30 from opposite sides of the circuit card 30 for better electrical performance. Contact effect. More Each of the contact arms 432 includes a first fixing portion 4321 extending inwardly from the connecting portion 41 and a contact portion 4322 extending further inward from the first fixing portion 4321 and the contact portion. 4322 is a second fixing portion 4323 extending inwardly. The first fixing portion 4321 and the second fixing portion 4323 are mounted and fixed in the mounting groove 137 of the corresponding locking element 13 . The first fixing portion 4321 protrudes outwardly from a barb 4325 which is in interference with the mounting groove 137 of the locking member 13 to prevent the grounding member 4 from coming out of the mounting groove 137. The contact portion 4322 can protrude into the clamping groove 136 of the latching member 13 and can be connected to the grounding contact 303 on the circuit card 30 by electrical contact.

It should be noted that, in this embodiment, one of the above-mentioned latching elements 13 is disposed at each end of the insulative housing 1, and two of the above-mentioned grounding pins 3 and two of the above grounding elements 4 are correspondingly disposed; In other embodiments, one of the ground pins 3 and one of the ground elements 4 described above may be provided on only one of the latching elements 13.

The assembly process of the card edge connector 10 of the present invention generally comprises: integrally molding the insulative housing 1 and mounting the conductive terminals to the terminal passages 112 in the insulative housing 1 respectively; and then mounting the grounding member 4 to the In the latching element 13; the grounding pin 3 is then mounted in the latching seat 12; finally the latching element 13 is movably mounted in the latching seat 12.

Referring to FIGS. 6-10, the circuit board 20 is provided with a plurality of terminal pads 201 and two ground pads 202 at the ends of the terminal pads 201. The soldering portions of the conductive terminals on the card edge connector 10 may be soldered to the terminal pads 201 correspondingly. Solidification of the grounding pin 3 on the card edge connector 10 The fixed pin 32 can be inserted and soldered to the two grounded soldering holes 202 to achieve electrical grounding.

A plurality of first gold fingers 301 are disposed at the bottom of the circuit card 30. Two clamping portions 302 are provided on both sides of the circuit card 30. The circuit card 30 is further provided with a second gold finger as a ground contact 303 on both sides of the fastening portion 302. These first gold fingers 301 can be inserted into the socket 111 of the card edge connector 10 to contact the abutting portions of the conductive terminals located on both sides of the slot 111 to transmit an electrical signal. The fastening portion 302 can cooperate with the clamping groove 136 of the locking component 13 of the card edge connector 10 to securely fix the circuit card 30 in the card edge connector 10, at this time, the grounding member 4 The contact portions 4322 on the two contact arms 432 may be in contact with the ground contacts 303 to be electrically connected together.

Compared with the prior art, the card edge connector of the present invention has the beneficial effects of: through the grounding pin 3 on the card edge connector 10 (generally equivalent to the holding device in the Chinese patent CN03265098.1) and the grounding element 4, The ground contacts 303 of the circuit card 30 are electrically coupled to the ground pads 202 on the circuit board 20 to provide an additional ground path for the circuit card 30. This grounding path can make the circuit card 30 have a low grounding resistance to improve the grounding effect, thereby reducing the possibility of erroneous operation of the circuit card 30 during operation; in addition, the grounding path is borrowed from the original board 20 The grounding hole 202 for accommodating the fixed pin serves as the grounding contact 303, and the original layout of the circuit board 20 is not required to be changed, and the difficulty and cost of the modification are low.

The above is only a preferred embodiment of the present invention, and is not intended to be used for The present invention is not limited by the main idea and spirit of the present invention. The scope of protection of the present invention is subject to the scope of protection claimed in the claims. .

11‧‧‧ base

13‧‧‧Locking elements

138‧‧‧ receiving trough

20‧‧‧ boards

202‧‧‧Grounding hole

30‧‧‧ circuit card

32‧‧‧Fixed feet

33‧‧‧First contact

41‧‧‧Connecting Department

42‧‧‧Second contact

43‧‧‧ Third contact

Claims (10)

A card edge connector capable of correspondingly soldering to a circuit board and capable of correspondingly inserting a circuit card; the card edge connector comprising an insulative housing having a slot extending in a longitudinal direction And a locking component is pivotally connected to each of the two ends of the slot; a plurality of conductive terminals are respectively disposed on the two sides of the slot of the insulating body; and the card edge connector further includes at least one grounding a pin and at least one grounding component; the at least one grounding pin is mounted on the insulative housing, each grounding pin has a fixing leg and a first contact portion, and the fixing leg can be correspondingly fixed to the circuit board to achieve electrical grounding The at least one grounding member is correspondingly disposed on the locking component, each grounding component has a connecting portion, a second contact portion at a lower end of the connecting portion, and a third portion at an upper end of the connecting portion a contact portion, the second contact portion is in elastic contact with the first contact portion of the corresponding ground pin to be electrically connected together, and the third contact portion can correspond to the ground contact on the circuit card, By its ground pins electrically grounded. The card edge connector of claim 1, wherein the latching component has a pivoting portion corresponding to the insulating body and a latching portion for correspondingly engaging the circuit card; The three contact portion is at least one contact arm extending from the connecting portion, and the contact arm is fixed to the engaging portion of the locking member. The card edge connector of claim 2, wherein the latching component is snapped A clamping slot is formed on a side facing the circuit card to clamp the circuit card; the grounding element has two contact arms, which are respectively disposed on both sides of the clamping slot to contact the circuit card from both sides. The card edge connector of claim 3, wherein each of the contact arms includes a first fixing portion and a contact portion further extending from the first fixing portion and a second portion further extended from the contact portion a fixing portion, the first fixing portion and the second fixing portion are fixed on the engaging portion of the locking component, the contact portion protrudes into the clamping slot and can be electrically connected to the circuit card, thereby A ground path is established between the boards. The card edge connector of claim 4, wherein the latching portion of the latching member is provided with a mounting slot on each side of the clamping slot, and the first fixing portion on the two contact arms of the grounding component And the second fixing portion is correspondingly inserted and fixed in the two mounting slots. The card edge connector of claim 5, wherein a barb protrudes from the first fixing portion of the contact arm, and the barb is interference fit with the mounting groove of the locking element. The card edge connector of claim 3, wherein the latching member is recessed with a receiving slot on a side facing away from the circuit card, and the connecting portion of the grounding component is correspondingly received in the receiving slot of the latching component. Two contact arms extend inwardly from the upper end of the connecting portion and are mounted to both sides of the clamping groove. The card edge connector of claim 1, wherein the second contact portion of the grounding member is extended obliquely outwardly and downwardly from a bottom end of the connecting portion; The first contact portion of the grounding pin includes a first extending portion extending outward from an upper portion of the fixing leg and a second extending portion extending further upwardly from the first extending portion, the second extending portion The inner side is in movable contact with the second contact of the grounding element. The card edge connector of claim 1 or 8, wherein the fixing leg comprises two elastic arms extending downwardly and spaced apart by a distance, and each of the two elastic arms is provided with a fixed barb. The card edge connector according to claim 1 or 8, wherein the fixing leg has a flat shape, and a fixed barb protrudes from each of the two sides.