TW202245345A - Card edge connector - Google Patents

Abstract

The present invention disclosed a card edge connector comprising a shielding shell on the outer surface of the card edge connector, and it is in contact with the ground, which can prevent the loss of the signal and the signal interference to the product from the outside, and achieve the effect of signal shielding. The present invention disclosed a card edge connector comprising a circuit board. An insulating body on the circuit board. The insulating body is provided with a longitudinally extending card slot. The insulating body is provided with a lower row of terminals and an upper row of terminals, and the lower row of terminals and the upper row of terminals are located in the slot of the insulating body to form a contact connection part up and down. The insulating body is provided with a casing, the casing is snapped on the insulating body, and a grounding terminal is arranged in the insulating body. The iron shell of the card edge connector of the invention contains a plurality of elastic pieces, which are in contact with the tail elastic arms of the corresponding grounding terminals, so that the grounding function can be realized, the iron shell does not need to be welded to the PCB board, the cost of the PCB is reduced, and the available space of the PCB is increased.

Description

card edge connector

The invention relates to the field of electrical connectors, in particular to a card edge connector, in particular to a card edge connector with a shielding function.

The existing card edge connector is arranged on the upper surface of a circuit board for insertion of an electronic card, so as to realize the electrical connection between the circuit board and the electronic card. The card edge connector is generally arranged on the circuit board, and one end of the memory card (or memory card) can be plugged in to realize the electrical connection between the memory card and the circuit board.

There is no iron shell on the outer surface of conventional card edge connectors, so there is no shielding function, and it is easily interfered by external signals; there are also shielded iron shells containing several iron shell soldering feet, which need to be soldered to the PCB board to achieve the grounding function, and the PCB needs to be opened separately. Solder pin holes or pads require additional reserved space, which is not conducive to product standardization.

The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a card edge connector with a shielding shell (iron shell) on the outer surface, which is in contact with the ground, which can prevent the loss of signals and the interference of external signals on the product, and achieve signal protection. shielding effect.

In order to achieve the above purpose, a card edge connector provided by the present invention adopts the following technical solutions:

A card edge connector, comprising a circuit board, the circuit board is provided with an insulating body (with a longitudinal card slot insulating body capable of accommodating a memory card), and the insulating body is provided with a longitudinally extending card slot for the memory card (electronic card) insertion fit, the insulating body is provided with the lower row of terminals and the upper row of terminals, the lower row of terminals and the upper row of terminals are located in the card slot of the insulating body to form a contact connection part; the insulating body is provided with a shell, and the shell is buckled in On the insulating body, there is a grounding terminal in the insulating body; on the shell, there is a bent shrapnel facing the insulating body, and the bent shrapnel is connected to the grounding terminal in the insulating body; There is a bent shrapnel extending toward the insulating body; the bent shrapnel is stamped and bent on the shell and the shell as a whole; the bent shrapnel includes bending (approximately perpendicular) to the shell surface The bending part, the end of the bending part away from the shell is provided with a reverse bending angle, and the other end of the reverse bending angle is provided with an extension part that is folded and extended in reverse, and the bending part, the extension part and the reverse bending angle form an elastic connecting body Bend shrapnel.

Further, in one embodiment, the ground terminal in the insulating body is composed of part of the upper row of terminals, one end of the upper row of terminals close to the circuit board is provided with a welding end, and the welding end is welded and fixed to the ground pad of the circuit board On the upper row of terminals, there is a contact end at the end away from the welding end, the contact end is suspended in the insulating body, and a tail elastic arm facing the housing is arranged between the welding end and the contact end.

Further, in one embodiment, the elastic tail arm (horseshoe ring) is an elastic socket of a C-shaped ring, and the bent elastic piece interferes with the tail elastic arm of the upper row of terminals, and the bent elastic piece is grounded through the welding end.

Further, in one embodiment, the end of the insulating body is provided with a slot, and the card edge connector further includes a buckle, one end of the buckle is inserted into the slot, and the other end of the buckle is away from the insulating body for connection (fixing) ) a memory card.

Further, in one embodiment, the sides of both ends of the housing are provided with guide grooves, and the side of the end of the insulating body is provided with guides corresponding to the guide grooves, and the guide grooves are used for matching with the sides of the end of the insulating body. Butt the guide piece on the top, and the guide piece is clamped in the guide groove.

Further, in one embodiment, the circuit board is provided with a socket, and the side of the insulating body close to the circuit board is provided with a plug corresponding to the socket; the housing is provided with a positioning hole, and the insulating body is provided with an insertion hole. The positioning hole matches the corresponding positioning column; one side of the memory card is provided with a socket, which can be inserted into the card slot of the insulating body, and there are grooves on both sides of the memory card, and the groove is connected with the insulation through the buckle. A solid connection (positioning) is formed between the bodies.

Further, in one embodiment, the sides of both ends of the housing are provided with card slots, and the side of the end of the insulating body is provided with a card corresponding to the card slot, and the card slot is engaged with the card on the side of the end of the insulating body. , the card block is embedded in the card slot.

Further, in one embodiment, the bottom end of the housing is provided with a limiting notch, and the side of the insulating body close to the housing is provided with a limiting protrusion corresponding to the limiting notch, and the limiting notch is in contact with the insulating body. The limit projection on the end surface of the body is engaged, and the limit projection is clamped in the limit notch.

The invention is applied to card edge connectors, notebooks or Pads. The iron shell of the card edge connector of the present invention contains several elastic pieces, which are in contact with the tail spring arms of the corresponding grounding terminals, so that the grounding function can be realized. The iron shell does not need to be welded to the PCB board, which reduces the cost of the PCB and increases the usable space of the PCB. At the same time, it can also reduce various risks of soldering PCBs with iron shells, and is also conducive to product standardization.

In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, and to analyze the advantages and spirit of the present invention, a further understanding of the present invention can be obtained through the following detailed description of the present invention in conjunction with the accompanying drawings and specific embodiments.

The present invention includes a circuit board 11. The circuit board 11 is provided with an insulating body 21 (with a longitudinal card slot insulating body capable of accommodating a memory card) that can be docked with the card edge. The insulating body 21 is provided with a longitudinally extending card slot. Used for inserting and matching the memory card 12 (electronic card), the insulating body 21 is provided with a lower row of terminals 15 and an upper row of terminals 16 (ground terminals), and the lower row of terminals 15 and the upper row of terminals 16 are located above and below the card slot of the insulating body 21 To form a contact connection part, the insulating body 21 is provided with a housing 31 , and the housing 31 is buckled on the insulating body 21 .

Further, in one embodiment, the circuit board 11 is provided with a socket 13, the side of the insulating body 21 close to the circuit board 11 is provided with a post 23 corresponding to the socket 13, and the housing 31 is provided with a positioning hole 33, The insulating body 21 is provided with a corresponding positioning post 24 for insertion into the positioning hole 33, and the positioning post 24 is mated with the positioning hole 33 for positioning between the insulating body 21 and the housing 31. The bent elastic piece 32 of the body 21 is used for connecting with the ground terminal in the insulating body 21 .

One side of the memory card 12 is provided with a socket 17, the socket 17 can be inserted into the slot of the insulating body 21, the two sides of the memory card 12 are provided with grooves 14, the grooves 14 are used to pass through the buckle 41 A firm connection (positioning) is formed with the insulating body 21 .

The end of the insulating body 21 is provided with a slot 22, and the card edge connector further includes a buckle 41, one end of the buckle 41 is inserted into the slot 22, and the other end of the buckle 41 is away from the insulating body 21 for connecting (fixing) the memory card 12.

The sides of both ends of the housing 31 are provided with guide grooves 34, and the side surfaces of the end of the insulating body 21 are provided with guide pieces 25 corresponding to the guide grooves 34. The guide piece 25 is docked, and the guide piece 25 is clamped in the guide groove 34 for positioning the housing 31 and the insulating body 21 .

Further, in one embodiment, buckle grooves 35 are provided on the sides of the two ends of the housing 31, and the sides of the end of the insulating body 21 are provided with locking blocks 26 corresponding to the buckle grooves 35, and the buckle grooves 35 are used to fit the insulating body. The locking block 26 on the side of the end of 21 is clamped, and the locking block 26 is embedded in the locking groove 35 for positioning the housing 31 and the insulating body 21 .

The bottom end of the housing 31 is provided with a limiting notch 36, and the side of the insulating body 21 close to the housing 31 is provided with a limiting protrusion 27 corresponding to the limiting notch 36, and the limiting notch 36 is used for matching with the insulating body. The limit protrusion 27 on the end surface of 21 engages, and the limit protrusion 27 is engaged in the limit notch 36 for further limiting the housing 31 and the insulating body 21 .

There is a notch 56 on the housing 31, and the bottom of the notch 56 away from the opening end is provided with a bent elastic piece 32 extending toward the insulating body 21; further, in one embodiment, the bent elastic piece 32 is connected with the housing 31 on the housing 31 by The metal sheet is stamped and bent into one body; the bent elastic piece 32 includes a bent part 37 bent (approximately perpendicular) to the shell surface of the shell 31, and the end of the bent part 37 away from the shell 31 is provided with a reverse bend Bending angle 39, the other end of the reverse bending angle 39 is provided with an extension part 38 which is folded and extended in opposite directions.

The insulating body 21 is provided with a grounding terminal. In one embodiment, the grounding terminal in the insulating body 21 is composed of part of the upper row of terminals 16 (for execution), and one end of the upper row of terminals 16 close to the circuit board 11 is provided with a welding The terminal 52, the welding terminal 52 is welded and fixed on the grounding pad of the circuit board 11, the end of the upper row of terminals 16 away from the welding terminal 52 is provided with a contact terminal 53, the contact terminal 53 is suspended in the insulating body 21, the welding terminal 52 and A tail elastic arm 51 (horseshoe ring) facing the housing 31 is provided between the contact ends 53. In this embodiment, the tail elastic arm 51 (horseshoe ring) is an elastic socket of a C-shaped ring, and the bent elastic piece 32 is arranged in conflict with In the tail elastic arm 51 of the upper row of terminals 16 , the bent elastic piece 32 is grounded through the welding end 52 , further, the housing 31 is kept grounded.

The outer surface of the card edge connector of the present invention contains a shielding iron shell, which is in contact with the ground, which can prevent signal loss and external signal interference to the product, and achieve the effect of signal shielding.

The iron shell of the card edge connector of the present invention contains several elastic pieces, which are in contact with the tail spring arms of the corresponding grounding terminals, so that the grounding function can be realized. The iron shell does not need to be welded to the PCB board, which reduces the cost of the PCB and increases the usable space of the PCB. At the same time, it can also reduce various risks of soldering PCBs with iron shells, and is also conducive to product standardization.

The above embodiments only express some preferred implementations of the present invention, and the description is more specific and detailed. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various Other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein, through the above teaching or technology or knowledge in the related field, should not be construed as limiting the scope of the present invention. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and the changes and changes made by those skilled in the art do not depart from the spirit and spirit of the present invention. Scope, these all belong to the protection scope of the appended claims of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

11: Circuit board 12: memory card 13: jack 14: Groove 15: Bottom row of terminals 16: Upper row of terminals 17: socket end 21: Insulation body 22: slot 23: post 24: positioning column 25: guide 26: block 27: limit bump 31: shell 32: Bending shrapnel 33: positioning hole 34: Guide groove 35: Buckle slot 36: limit notch 37: Bending part 38: Extension 39: reverse bending angle 41: buckle 51: Rear elastic arm 52: Welding end 53: contact end 56: Gap

Fig. 1 shows the schematic diagram of the embodiment of the present invention; Fig. 2 shows the exploded schematic diagram of the embodiment of the present invention; Figure 3 shows a perspective view of an embodiment of the present invention; Figure 4 is a schematic structural view of an embodiment of the present invention; Figure 5 is a schematic diagram of the positioning hole part of the embodiment of the present invention; Fig. 6 is a schematic diagram of the bent shrapnel part of the embodiment of the present invention; Fig. 7 is a schematic diagram of the casing part of the embodiment of the present invention; Fig. 8 is a schematic diagram of the bent shrapnel part of the embodiment of the present invention; FIG. 9 is a schematic diagram of an insulating body part according to an embodiment of the present invention; Figure 10 is a schematic diagram of the housing part of the embodiment of the present invention; and FIG. 11 is a schematic cross-sectional view of an embodiment of the present invention.

16: Upper row of terminals

31: Shell

32: Bending shrapnel

37: Bending part

38: Extension

39: reverse bending angle

51: Rear elastic arm

52: Welding end

53: contact end

Claims (8)

A card edge connector, comprising: a circuit board (11), an insulating body (21) is provided on the circuit board (11), a card slot extending longitudinally is provided on the insulating body (21), and the insulating body ( 21) There are a lower row of terminals (15) and an upper row of terminals (16), the lower row of terminals (15) and the upper row of terminals (16) are located in the card slot of the insulating body (21) to form a contact connection A housing (31) is provided on the insulating body (21), the housing (31) is buckled on the insulating body (21), and a grounding terminal is provided in the insulating body (21); The casing (31) is provided with a bent elastic piece (32) facing the insulating body (21), and the bent elastic piece (32) is connected to the ground terminal in the insulating body (21); A notch (56) is provided on the casing (31), and the bent elastic piece (32) extending toward the insulating body (21) is provided at the bottom of the notch (56) away from the opening end; and The bent shrapnel (32) is integrally formed on the casing (31) and the casing (31) by punching and bending metal sheets; the bent shrapnel (32) includes bending on the casing (31) ) a bending part (37) of the shell surface, the end of the bending part (37) away from the shell (31) is provided with a reverse bending angle (39), and the other end of the reverse bending angle (39) is provided with An extension part (38) extending in opposite directions is folded in half, the bending part (37), the extension part (38), and the reverse bending angle (39) form the bending elastic piece (32) of the elastic connecting body. A card edge connector as described in claim 1, wherein the ground terminal in the insulating body (21) is composed of part of the upper row of terminals (16), and the upper row of terminals (16) is close to the circuit board One end of (11) is provided with a welding end (52), and the welding end (52) is welded and fixed on the ground pad of the circuit board (11), and the upper row of terminals (16) is far away from the welding end (52). One end is provided with a contact end (53), and the contact end (53) is suspended in the insulating body (21), and the welding end (52) and the contact end (53) have a A tail elastic arm (51). A card edge connector as described in claim 2, wherein the elastic tail arm (51) is an elastic socket of a C-shaped ring, and the bent elastic piece (32) is in contact with the tail portion of the upper row of terminals (16) In the elastic arm (51), the bent elastic piece (32) is grounded through the welding end (52). A card edge connector as described in claim 1, wherein a slot (22) is opened at the end of the insulating body (21), and the card edge connector further includes a buckle (41), the buckle (41) One end is inserted into the slot (22), and the other end of the buckle (41) is away from the insulating body (21) for connecting a memory card (12). A card edge connector as described in claim 1, wherein a guide groove (34) is provided on the side of both ends of the housing (31), and the side of the end of the insulating body (21) is provided with the guide groove (34) ) to match a corresponding guide piece (25), the guide groove (34) is used to dock with the guide piece (25) on the end side of the insulating body (21), and the guide piece (25) snaps Set in the guide groove (34). A card edge connector as described in claim 4, wherein the circuit board (11) is provided with a jack (13), and the side of the insulating body (21) close to the circuit board (11) is provided with the jack (13) Match a corresponding post (23); the housing (31) is provided with a positioning hole (33), and the insulating body (21) is provided with a corresponding positioning post inserted into the positioning hole (33) (24); one side of the memory card (12) is provided with a socket (17), the socket (17) can be inserted into the card slot of the insulating body (21), the memory card (12) A groove (14) is defined on both sides of the two sides, and the groove (14) forms a stable connection with the insulating body (21) through the buckle (41). A card edge connector as described in claim 1, wherein a card slot (35) is provided on both ends of the housing (31), and a card slot (35) is provided on the side of the end of the insulating body (21) to match the card slot (35). Corresponding to a card block (26), the card slot (35) is engaged with the card block (26) on the end side of the insulating body (21), and the card block (26) is embedded in the card slot (35) )middle. A card edge connector as described in Claim 1, wherein the bottom end of the housing (31) is provided with a limiting notch (36), and the insulating body (21) is provided on a side close to the housing (31). There is a limit protrusion (27) corresponding to the limit notch (36), and the limit notch (36) engages with the limit protrusion (27) on the end face of the insulating body (21) , the limiting protrusion (27) is set in the limiting notch (36).

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