TWI475769B - Electrical connector for eliminating electromagnetic interference and terminal assembly thereof - Google Patents

Description

Anti-electromagnetic interference electrical connector and terminal assembly thereof

The present invention relates to an electrical connector, and more particularly to an electrical connector for preventing electromagnetic interference and a terminal assembly thereof.

When the signal terminal transmits signals, it is transmitted by high-frequency current switching. Therefore, when the high-frequency current passes through the signal terminals and switches quickly, a magnetic field is generated outside the signal terminals.

In the conventional connector structure, since the number of signal terminals having a small volume is large, the spacing between the terminals is relatively small. When a signal field generates a magnetic field, electromagnetic interference (EMI) is easily generated between adjacent signal terminals, causing transmission errors and affecting the transmission efficiency between the signal terminals.

In order to improve the electromagnetic interference between adjacent terminals, in the case of a DDR (Double Data Rate) connector, the terminal arrangement manner is such that the signal terminal and the ground terminal are arranged in a staggered manner, and the adjacent signal terminals are shielded through the ground terminal. Electromagnetic interference. However, the aforementioned grounding terminal can only shield electromagnetic interference to a limited extent, and if the arrangement between the terminals is more dense, the shielding effect of the grounding terminal becomes limited.

In view of this, the present invention proposes an electromagnetic interference preventing electrical connector and a terminal assembly for reducing electromagnetic interference between terminals.

In order to achieve the above object, the present invention provides an electromagnetic interference preventing electrical connector comprising an insulating housing, a plurality of first terminals and a plurality of second terminals.

The insulative housing contains a slot. Each of the first terminals is respectively disposed in the insulative housing, and each of the first terminals respectively includes a contact end located in the slot. The second terminals are respectively disposed in the insulative housing, and the second terminals and the first terminals are staggered.

Each of the second terminals includes a connecting end, and is located in the slot and adjacent to the contact end of the at least one first terminal, wherein a cross-sectional area of the connecting end of the second terminal is greater than a cross-sectional area of the contact end of the first terminal.

Since the cross-sectional area of the connecting end is larger than the cross-sectional area of the contact end, when the high-frequency signal is transmitted between the first terminals, the electromagnetic interference generated by the high-frequency signal can be effectively shielded by the connecting end of the second terminal, and the electromagnetic between the first terminals is reduced. interference.

The invention further provides a terminal assembly for bonding to an insulative housing to form an electrical connector for preventing electromagnetic interference. The terminal assembly includes a fixed seat, a plurality of first terminals, and a plurality of second terminals.

The first terminal is fixed to the fixing base, and each of the first terminals respectively includes a contact end. The second terminal is fixed to the fixing base, wherein the second terminal and the first terminal are staggered, and each of the second terminals respectively includes a connecting end, the contact end of the adjacent at least one first terminal, and the cross-sectional area of the connecting end is greater than the contact The cross-sectional area of the end.

In the foregoing terminal assembly, the cross-sectional area of the connecting end is larger than the cross-sectional area of the contact end. Therefore, when the high-frequency signal is transmitted between the first terminals, the electromagnetic interference generated by the terminal can be effectively shielded by the connecting end of the second terminal, and the second portion is lowered. Electromagnetic interference between one terminal.

The cross-sectional area of the invention through the connection end is larger than the cross-sectional area of the contact end, that is, the cross-sectional area of the second terminal to increase the effective shielding area and improve the electrical characteristics. When the first terminal performs data transmission, the shielding of the second terminal can be used to suppress the electromagnetic Interference, the purpose of maintaining the quality of electronic signals.

Preferred embodiments of the present invention and their effects are described below in conjunction with the drawings.

Please refer to "Figure 1" and "Figure 2" for the first implementation of the present invention. The electrical connector for preventing electromagnetic interference disclosed in the example is for electrically connecting an electrical connector (not shown). The electromagnetic interference preventing electrical connector comprises an insulative housing 10, a plurality of first terminals 20 and a plurality of second terminals 30.

Referring to "1" and "2", the insulative housing 10 includes a slot 110 for interposing the electrical connector. In a specific embodiment of the DDR (Double Data Rate) memory module socket, the socket 110 is of a narrow shape, and the electrical connector is a flat type matching the slot 110 and is located in the memory module. The edge.

Referring to "1st drawing", "Fig. 2" and "3rd drawing", a plurality of first terminals 20 are provided in the insulating case 10. Each of the first terminals 20 includes a contact end 210. Each contact end 210 is located in the slot 110 of the insulative housing 10. The first terminals 20 are used for transmitting signals, in particular, a signal terminal.

The first terminal 20 further includes a first soldering end 220 and a first positioning end 230. The first soldering end 220 is soldered to a circuit board, such as a computer motherboard, so that the electrical connector is fixed to the circuit board through the first soldering end 220 of the first terminal 20, and is further electrically connected to the circuit board. The first positioning end 230 is configured to be coupled to the insulative housing 10 , wherein the first positioning end 230 further includes a barb 231 for being coupled to the insulative housing 10 by a fastening manner.

Referring to "1st drawing", "Fig. 2" and "3rd drawing", a plurality of second terminals 30 are provided in the insulating case 10. The second terminal 30 and the first terminal 20 are staggered, in particular, staggered in such a manner that one first terminal 20 is followed by a second terminal 30.

Each of the second terminals 30 includes a connecting end 310 in the slot 110, and the contact end 210 of the adjacent at least one first terminal 20, for example, at the outermost connecting end 310 is located at the side of one contact end 210 but not In contact with each other, the remaining terminals 310 are located between the two contact ends 210. The number of the connection terminals 310 and the contact terminals 210 may be correspondingly arranged, or the number of the connection terminals 310 may be more than, equal to, or less than the number of the contact terminals 210, which is described here.

As shown in FIG. 3, the cross-sectional area of the connection end 310 of the second terminal 30 is larger than the cross-sectional area of the contact end 210 of the first terminal 20. Viewed from the side, the contact end 210 of the second terminal 30 increases the cross-sectional area to increase the effective shielding area of the contact end 210 and improve electrical characteristics, so that when the first terminal 20 performs data transmission, the second terminal 30 can be utilized. Shielding suppresses electromagnetic interference of each of the first terminals 20 and maintains electronic signal quality.

In one embodiment of the present embodiment, the plurality of second terminals 30 are electrically grounded to serve as a ground pin. In addition, in order to increase the cross-sectional area of the second terminal 30, the original embedded Molding structure is changed to the interposer terminal structure. Each of the second terminals 30 further includes a second soldering end 320 and a second positioning end 330. The second soldering end 320 is soldered to a circuit board, such as a computer motherboard, so that the electrical connector passes through the second soldering end of the second terminal 20. The 320 is fixed to the circuit board and further electrically connected to the grounding circuit of the circuit board. The second positioning end 330 is configured to be coupled to the insulative housing 10 , and the second positioning end 330 further includes a barb 331 for bonding to the insulative housing 10 by a snapping manner.

As shown in FIG. 1 and FIG. 2, the electrical connector 100 further includes a positioning member 80 disposed on the insulative housing 10 for positioning the electrical connector. When the electrical connector 90 is inserted into the slot 110 to electrically connect the contact end 210 and the connecting end 310, the positioning member 80 can be locked to the electrical connector 90.

Referring to FIG. 4, a terminal assembly 200 according to a second embodiment of the present invention can be combined with an insulative housing 10 to form an electrical connector for preventing electromagnetic interference. The terminal assembly 200 includes a mounting base 40, a plurality of first terminals 20, and a plurality of second terminals 30.

As shown in FIG. 4 and FIG. 5, a plurality of first terminals 20 are fixed to the fixing base 40, and each of the first terminals 20 includes a contact end 210.

The second terminal 30 is fixed to the fixing base 40; wherein the second terminal 30 and the first terminal 20 are staggered, and each of the second terminals 30 includes a connecting end 310, and each connecting end 310 is adjacent to at least one contact end. 210, and the connection end The cross-sectional area of 310 is greater than the cross-sectional area of contact end 210.

Referring to FIG. 5 to FIG. 8 , a plurality of fixing slots 41 are formed in the fixing base 40 , and each of the second terminals 30 includes a second positioning end 330 and a third positioning end 340 respectively embedded in at least one of the second positioning ends 330 . The fixing slot 41 is configured such that the second positioning end 330 and the third positioning end 340 are clamped to the fixing base 40, and the second terminal is coupled to the fixing base 40. The third positioning end 340 further includes a barb 341 for the card. The fixing seat 40 is fixedly coupled.

The description of the second terminal 30 being coupled to the fixing base 40 is merely an example. Alternatively, the second terminals 30 are respectively inserted into the fixing base 40 by inserting and inserting the first terminal 20 or the first terminal 20 or The two terminals 30 are coupled to the fixing base 40.

As shown in FIG. 9, the contact end 210 of the second terminal 30 of the second embodiment has an increased cross-sectional area to increase the effective shielding area of the contact end 210 and improve electrical characteristics, even when the first terminal 20 performs data transmission. The shielding of the second terminal 30 can be utilized to suppress electromagnetic interference of each of the first terminals 20 and maintain electronic signal quality. Therefore, after the terminal assembly 200 of the second embodiment is coupled to an insulative housing 10, the first terminal 20 and the second terminal 30 are corresponding to the slot 110, thereby forming an electromagnetic interference preventing electrical connector.

Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.

100‧‧‧Electrical connector

10‧‧‧Insulated housing

110‧‧‧ slots

200‧‧‧ terminal assembly

20‧‧‧First terminal

210‧‧‧Contact end

220‧‧‧First welded end

230‧‧‧First positioning end

30‧‧‧second terminal

310‧‧‧Connected end

320‧‧‧Second welding end

330‧‧‧Second positioning end

340‧‧‧ third positioning end

231/331/341‧‧‧ Barb

40‧‧‧ Fixed seat

41‧‧‧fixed slot

80‧‧‧ Positioning parts

Figure 1 is a perspective view of a first embodiment of the present invention.

Figure 2 is an exploded perspective view of the first embodiment of the present invention.

Figure 3 is a schematic view of the terminal of the first embodiment of the present invention.

Figure 4 is an exploded perspective view of a second embodiment of the present invention.

Fig. 5 is a side view (1) of the terminal assembly of the second embodiment of the present invention.

Figure 6 is a side view (2) of the terminal assembly of the second embodiment of the present invention.

Fig. 7 is an enlarged view (1) of the terminal assembly of the second embodiment of the present invention.

Figure 8 is a side view (2) of the terminal assembly of the second embodiment of the present invention.

Figure 9 is a perspective view of a second embodiment of the present invention.

100. . . Electrical connector

10. . . Insulating housing

110. . . Slot

20. . . First terminal

30. . . Second terminal

80. . . Positioning member

Claims (9)

An electrical connector for preventing electromagnetic interference, comprising: an insulating housing, comprising a slot; a plurality of first terminals disposed in the insulating housing, and each of the first terminals respectively includes a contact end, a first a soldering end and a first positioning end, the contact end, the first positioning end and the first soldering end respectively protruding from different positions of the first terminal and not contacting each other, the first soldering end being located in the slot, The soldering end is for soldering to an external circuit board, the first positioning end includes a barb to be fastened to the insulating housing; and a plurality of second terminals are disposed in the insulating housing, and each of the second The terminal and each of the first terminals are alternately arranged in a continuous manner; each of the second terminals includes a connecting end, a second soldering end and a second positioning end, the connecting end, the second soldering end and the second positioning The ends protrude from different positions of the second terminal and do not contact each other, the connection end is located in the slot and adjacent to the at least one contact end, and the cross-sectional area of the connection end is larger than the cross-sectional area of the contact end, and the second The cross-sectional area of the positioning end is the first End of the same cross-sectional area, the second welding for welding to the outer end of the circuit board, the second end comprising positioning a barb for retaining in the insulating housing. The electrical connector for preventing electromagnetic interference according to claim 1, further comprising a positioning member disposed on the insulating housing for an electrical connector, wherein the electrical connector is inserted into the slot and electrically connected The contact ends are connected to the terminals. A terminal assembly includes: a fixing base; a plurality of first terminals fixed to the fixing base, each of the first terminals respectively includes a contact end; and a plurality of second terminals fixed to the fixing base, the The two terminals and the first terminals are staggered in a continuous manner, and each of the second terminals includes a connection The first end of the connecting end and the second end of the connecting end are connected to the fixing base in a immersive injection molding manner. The terminal assembly of claim 3, wherein the second terminals are interposed in the fixing seat. The terminal assembly of claim 3, wherein each of the second terminals comprises a second positioning end and a third positioning end for clamping the fixing base and the second terminal is coupled to the fixing base. The terminal assembly of claim 4, wherein the third positioning end further comprises a barb for being fastened to the fixing base. The terminal assembly of claim 3, wherein the fixing seat is injection-molded in combination with the first terminals or the second terminals. The terminal assembly of claim 3, wherein each of the first terminals includes a first soldering end for soldering to a circuit board. The terminal assembly of claim 3, wherein each of the second terminals comprises a second soldering end for soldering to a circuit board.