TWM496873U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector having an inner and outer shield.

An electrical connector for transmitting a high-frequency signal, such as that disclosed in the Japanese Patent Application No. 201320378153.0, generally only has a metal casing that is sleeved outside the insulating body to form an external shielding structure to block the terminals of the electrical connector. Electromagnetic radiation when transmitting signals.

However, when the terminal performs high-frequency and high-speed signal transmission, only the external metal casing can not completely shield all electromagnetic radiation as a shield, and electromagnetic radiation leaks backward through the insulating body, which adversely affects the tail of the terminal and causes the signal transmission quality to deteriorate. And the risk of further leakage to the outside of the electrical connector.

Accordingly, it is an object of the present invention to provide an electrical connector having an inner and outer shield shell to achieve adequate shielding of electromagnetic radiation.

Another object of the present invention is to provide an electrical connector that has better shielding and grounding effects and is easy to manufacture and assemble.

Therefore, the novel electrical connector is disposed on a circuit board, and the package The utility model comprises: an insulating body, a plurality of terminals, an outer shielding shell and an inner shielding shell. The insulative housing has a body and a tongue projecting forwardly from the body, the tongue having a base connecting the body and an extension extending forwardly from the base. The terminals are disposed on the insulative housing and have a contact portion exposed to the tongue plate and a tail portion of the body extending from the insulative housing. The outer shield shell is combined with the insulative housing and defines a mating cavity around the outer space of the tongue plate. The inner shielding shell is disposed on the inner side of the outer shielding shell; the inner shielding shell covers at least the base of the tongue plate, and has a plurality of fixing tabs for positioning the inner shielding shell, and the fixing protrusions are embedded in the insulation The body shields the inner shield shell from the insulating body.

The electrical connector of the present invention, wherein the inner shield case The elastic arm extends from the inner shielding shell and abuts against the inner surface of the outer shielding shell, so that the inner shielding shell is tightly fitted between the outer shielding shell and the insulating body.

The electrical connector of the present invention, wherein the inner shield case The at least one soldering leg has a corresponding at least one through hole for receiving the corresponding soldering leg, and the soldering leg located at the corresponding through hole is soldered to the circuit board to fix the inner shielding shell and the outer shielding shell and form Ground connection.

The electrical connector of the present invention, wherein the insulative body The body has an upper surface, a lower surface, two sides connecting the upper and lower surfaces, and a front surface facing the mating cavity; the inner shield further covering the front surface of the body.

The electrical connector of the present invention, wherein the terminals are The tongue plate is divided into upper and lower rows, and the electrical connector further comprises a grounding gold The grounding metal plate has a plate body disposed between the upper and lower rows of the insulating body, and at least one grounding leg extending from the plate body to the insulating body.

The electrical connector of the present invention, wherein the inner shield case The two metal members are respectively a first metal member and a second metal member. The first metal member and the second metal member jointly cover upper and lower sides of the base of the tongue plate, thereby surrounding the terminals. among them.

The electrical connector of the present invention, wherein each metal piece has A transverse plate portion covering the base portion, a bent portion extending perpendicularly from a rear end of the horizontal plate portion, and a fixing portion extending rearward from an outer edge of the bent portion.

The electrical connector of the present invention, wherein the insulating body is further Having two channels respectively located on both sides of the base of the tongue plate and extending in the up and down direction; each metal piece has two fixing tabs formed on two sides of the horizontal plate portion, and the two fixing tabs are correspondingly placed Corresponding channel.

The electrical connector of the present invention, wherein the insulative body The main body further has a plurality of card slots, and each of the metal members has at least one fixing tab formed on the fixing portion, and the fixing tabs are correspondingly embedded in the corresponding card slots.

The electrical connector of the present invention, wherein the two channels are further advanced Extending backward into the body of the insulative housing to a predetermined depth and penetrating the main body up and down; the rear portion of the fixing tab on the transverse plate portion of the two metal members is embedded in the channel on the main body, thereby being clamped by the main body Hold it in it.

The electrical connector of the present invention, wherein the front of the inner shield shell The rim has at least one guiding portion that is curved, and the tongue plate also corresponds to the guiding portion Forming at least one retaining groove, wherein a gap between the front end edge of the guiding portion and the yielding groove is provided for the guiding portion to be slightly movable therein.

The function of the novel, the new electrical connector can be shielded by an outer shield The two shielding structures are combined with the inner shielding shell to effectively shield the electromagnetic radiation, and the grounding metal plate is used to enhance the strength of the tongue plate and reduce the high frequency crosstalk when the terminal transmits signals, thereby achieving the purpose of improving electrical performance and increasing grounding. Shielding effect. In addition, the insulating body is formed by a combination of a first insulating member and a second insulating member, and the inner shielding shell is formed by a combination of the first metal member and the second metal member, which facilitates manufacturing and assembly.

100‧‧‧Electrical connector

1‧‧‧Insulating body

11‧‧‧First insulation

111‧‧‧ recessed hole

12‧‧‧Second insulation

121‧‧‧Bump

122‧‧‧Limited slot

13‧‧‧ Subject

131‧‧‧ upper surface

132‧‧‧ lower surface

133‧‧‧ side

134‧‧‧ front surface

135‧‧‧ channel

136‧‧‧ card slot

137‧‧‧Replacement groove

14‧‧‧ tongue plate

141‧‧‧ base

142‧‧‧Extension

143‧‧‧ upper surface

144‧‧‧ lower surface

145‧‧‧Replacement groove

15‧‧‧Terminal spacer

2‧‧‧ terminals

21‧‧‧Contacts

22‧‧‧ tail

3‧‧‧Outer shield

31‧‧‧ docking chamber

32‧‧‧ solder feet

33‧‧‧Perforation

4‧‧‧ inner shield shell

41‧‧‧Fixed tabs

42‧‧‧Fixed tabs

43‧‧‧welding feet

44‧‧‧First metal parts

441‧‧‧ first horizontal plate

442‧‧‧First bend

443‧‧‧First Fixed Department

444‧‧‧Flexible arm

445‧‧‧First Guidance

45‧‧‧Second metal parts

451‧‧‧Second horizontal plate

452‧‧‧Second bend

453‧‧‧Second fixed department

454‧‧‧Second guidance

5‧‧‧Grounded metal plate

51‧‧‧ board

511‧‧‧Perforation

52‧‧‧Shading Department

521‧‧‧Perforation

53‧‧‧ Grounding feet

6‧‧‧ soldering foot positioning parts

61‧‧‧ card block

62‧‧‧Positioning holes

63‧‧‧Positioning holes

64‧‧‧ positioning groove

9‧‧‧Circuit board

200‧‧‧ plug connector

201‧‧‧ docking front

202‧‧‧ Grounding shrapnel

203‧‧‧Shielded enclosure

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a perspective view showing a preferred embodiment of the present invention. FIG. 2 is a perspective view showing the preferred embodiment of the circuit board; FIG. 3 is an exploded perspective view showing an outer shield shell and an insulating body of the preferred embodiment. FIG. 4 is another perspective view of FIG. 3; FIG. 5 is an exploded perspective view showing the coupling relationship between the inner shield shell and the insulating body of the preferred embodiment; FIG. 6 is another angle of FIG. Figure 7 is an exploded perspective view showing the grounding metal plate and a solder joint positioning member of the preferred embodiment in combination with the insulating body; Figure 8 is another perspective view of Figure 7; FIG. 9 is an exploded perspective view showing the coupling relationship between the terminal of the preferred embodiment and a first insulating member and a second insulating member of the insulating body; FIG. 10 is another perspective view of FIG. 9; A front view for illustrating the preferred embodiment; FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. 11; FIG. 13 is a cross-sectional view taken along the line XIII-XIII in FIG. 11; A perspective view showing the relationship between the terminal spacer and the terminal tail of the preferred embodiment; and FIG. 15 is a partial view of FIG. 14 illustrating the relationship between the terminal spacer and the terminal tail of the preferred embodiment.

Referring to FIGS. 1 and 2, the electrical connector 100 of the present invention can be disposed on a circuit board 9 for docking a plug connector 200.

Referring to FIG. 2 to FIG. 8 , the electrical connector 100 includes an insulative housing 1 , a plurality of terminals 2 , an outer shield shell 3 , an inner shield shell 4 , a grounded metal plate 5 , and a solder leg positioning member 6 .

The insulative housing 1 is formed by a combination of a first insulating member 11 and a second insulating member 12, and has a main body 13 and a tongue 14 projecting forward from the main body 13. The main body 13 has an upper surface 131, a lower surface 132, two side surfaces 133 connecting the upper and lower surfaces 131, 132, and a front surface 134. The tongue plate 14 has a base portion 141 that connects the body 13 and an extension portion 142 that extends forwardly from the base portion 141. The thickness of the base portion 141 of the tongue plate 14 is thicker than the thickness of the extension portion 142 of the tongue plate 14.

The terminals 2 are fixed to the insulative housing 1 and have one The contact portion 21 exposed to the extending portion 142 of the tongue plate 14 and the tail portion 22 of the main body 13 of the insulating body 1 are protruded rearward. Referring to FIG. 9 and FIG. 10, in detail, the terminals 2 are divided into upper and lower rows, and the upper rows of terminals 2 are embedded in the first insulating member 11, and the lower rows of terminals 2 are embedded in the first Two insulating members 12. The contact portion 21 of the upper row of terminals 2 is exposed to the upper surface 143 of the extended portion 142 of the tongue plate 14, and the contact portion 21 of the lower row of terminals 2 is exposed to the lower surface 144 of the extended portion 142 of the tongue plate 14. Each row of terminals 2 includes four terminals 2 with a contact portion 21 projecting forwardly and a terminal 2 with eight contact portions 21 at a later position, wherein two longer terminals 2 on both sides are used for grounding, and two of the middle portions The longer terminal 2 is used to provide power. The eight shorter terminals 2 include two high speed differential signal pairs, a low speed differential signal pair at the center, and two control terminals. The contact portion 21 of the upper row of terminals 2 and the contact portion 21 of the lower row of terminals 2 are symmetrically disposed 180 degrees with respect to the tongue plate 14, so that the plug connector 200 can be inserted into the electrical connector 100 at a 180 degree flip.

The outer shield shell 3 is combined with the insulating body 1 and surrounds the outer shield shell 3 The outer space of the tongue 14 defines a mating cavity 31 having four solder legs 32 for attachment to the circuit board 9. The front surface 134 of the insulative housing 1 faces the docking cavity 31.

The inner shield shell 4 covers the base 141 of the tongue plate 14 and the main The upper and lower surfaces 131, 132 and the front surface 134 of the body 13 have a plurality of fixing tabs 41, 42 for positioning the inner shield shell 4. Specifically, the inner shield shell 4 includes a first metal member 44 and a second metal member 45. The first metal member 44 has a first horizontal plate portion 441 covering the base portion 141, from which A first bent portion 442 extending from the rear end of the first horizontal plate portion 441 is vertically bent, and a first fixed portion 443 extending horizontally rearward from the upper edge of the first bent portion 442. The second metal member 45 has a second horizontal plate portion 451 covering the base portion 141, a second bent portion 452 extending perpendicularly from the rear end of the second horizontal plate portion 451, and the second bent portion 452 A second fixing portion 453 extends horizontally rearward of the lower edge of the bent portion 452. The first and second lateral plate portions 441 and 451 cover the upper and lower sides of the base portion 141 of the tongue plate 14. The first bending portion 442 and the second bending portion 452 cover the front surface 134 of the main body 13. The first fixing portion 443 and the second fixing portion 453 cover the upper and lower surfaces 131 and 132 of the main body 13, respectively. In other words, the first metal member 44 and the second metal member 45 cooperate to cover the upper and lower sides of the base portion 141 of the tongue plate 14, that is, the inner shield shell 4 covers the base portion 141 of the tongue plate 14 to The structure of the terminal 2 is surrounded by a gap and is spaced apart. This structure is advantageous for manufacturing and assembly. In some more compact alternative embodiments (not shown), the inner shield can also be configured to cover only the base 141 of the tongue 14 or only the base 141 of the tongue 14 and the body 13 The front surface 134, so as to achieve the effect of the grounding shield to a certain extent, prevents the electromagnetic radiation in the docking cavity 31 from leaking backward through the insulating body 1 to affect the tail of the terminal 2, thereby improving the signal transmission quality of the terminal 2 and preventing electromagnetic radiation leakage. The purpose of going outside the electrical connector 100.

The insulative housing 1 further has two channels 135 adjacent to both sides of the base portion 141 of the tongue plate 14 and extending in the up and down direction, a plurality of card slots 136 respectively formed on the upper and lower surfaces 131, 132, and two formed A recess 137 is provided in the upper surface 131. Back end of two channels in some alternative embodiments The front end of the main body 13 or the intersection of the main body 13 and the tongue plate 14 (not shown) is formed, and four fixing tabs 41 are formed on the lateral sides of the first horizontal plate portion 441 and the second horizontal plate portion 451, respectively. And inserting the card into the corresponding channel 135 to achieve the purpose of fixing the first horizontal plate portion 441 and the second horizontal plate portion 451. Preferably, the two channels 135 of the preferred embodiment further extend back to a predetermined depth in the main body 13 of the insulative housing 1 and extend up and down through the main body 13; the rear portions of the four fixing tabs 41 are embedded to The main body 13 is formed in the channel 135 so as to be clamped and fixed by the main body 13, thereby preventing the fixing tab 41 from being deformed outwardly; and wherein the four fixing tabs 42 are preferably formed separately. The two sides of the first fixing portion 443 and the second fixing portion 453 are embedded in the corresponding card slots 136 for reinforcing the first metal member 44 and the second metal member 45; The welding leg 43 is formed on the second bending portion 452 and the second fixing portion 453. The welding leg 43 extends from the second horizontal plate portion 451 toward the outer shielding shell 3, and the outer shielding shell 3 has a corresponding Two through holes 33 are received to receive the corresponding soldering legs 43, so that the soldering legs 43 located in the corresponding through holes 33 can be soldered to the circuit board 9 (see FIGS. 11, 12) to form a ground and provide a fixing effect. The first metal member 44 further has two elastic arms 444 formed on the first bending portion 442 and the first fixing portion 443. The elastic arms 444 are extended by the first horizontal plate portion 441 of the inner shielding shell 4. The inner surface of the outer shield shell 3 (see FIG. 12) is elastically abutted, so that the inner shield shell 4 and the outer shield shell 3 achieve the effect of grounding and auxiliary fixing.

Preferably, the front edge of the inner shield shell 4 has at least one guiding portion which is curved, and the tongue plate 14 is formed with at least one letting position corresponding to the guiding portion. The groove 145 has a gap between the front end edge of the guiding portion and the retaining groove 145, so that the guiding portion can be slightly moved therein. Specifically, in the preferred embodiment, the first metal member 44 further has a first guiding portion 445 formed on the front edge of the first horizontal plate portion 441 and having a curved shape. The second metal member 45 further has a first guiding portion 445. The second guiding portion 454 is formed in a curved shape on the front edge of the second horizontal plate portion 45. The tongue plate 14 further has two retaining grooves 145 (see FIG. 12) respectively formed on the bottom surface 143 and 144 of the base portion 141 to accommodate the first and second guiding portions 445, 454, respectively. When the plug connector 200 (see FIG. 1) is docked with the electrical connector 100, the first and second guiding portions 445, 454 can easily pass the butted leading edge 201 of the plug connector 200 without blocking. . Moreover, after the plug connector 200 is mated with the electrical connector 100, the plurality of upper and lower grounding elastic pieces 202 of the plug connector 200 may contact the first horizontal plate portion 441 and the second horizontal plate portion 451 of the inner shield case 4 to Grounding is achieved to form a first grounded shield structure to prevent electromagnetic radiation from leaking back through the insulative body 1. The outer shield case 3 and the shield case 203 of the plug connector 200 constitute a second ground shield structure, so that an overall surrounding shielding effect can be effectively achieved on the outer circumference of the mating cavity 31.

Referring to FIG. 7 to FIG. 10, the grounding metal plate 5 is sandwiched between the first An insulating member 11 is interposed between the second insulating member 12. The grounding metal plate 5 has a plate body 51 disposed between the upper and lower rows of terminals 2, and a shielding portion extending from the plate body 51 to the insulating body 1 and bent downward 52, and two grounding legs 53 respectively extending from the plate body 51 to the insulative housing 1 and located on opposite sides of the shielding portion 52. In this embodiment, the second insulating member 12 has a plurality of studs 121, and the first insulating member 11 has There are a plurality of recesses 511 which are respectively engaged with the studs 121. The grounding metal plate 5 has a plurality of through holes 511 formed in the plate body 51 for respectively corresponding to the studs 121. Of course, in an equivalent embodiment, it is also possible that the first insulating member 11 has a stud and the second insulating member 12 has a recessed hole. The grounding metal plate 5 can enhance the strength of the tongue plate 14 and reduce the high frequency crosstalk when the terminal 2 of the upper row and the terminal 2 of the lower row transmit signals, thereby achieving the purpose of improving electrical performance. In addition, the shielding portion 52 of the grounding metal plate 5 and the grounding leg 53 can enhance the shielding function and provide grounding.

Referring to FIG. 9 to FIG. 12, the soldering leg positioning member 6 and the insulating book The body 13 of the body 1 is fixedly coupled. Specifically, the soldering leg positioning member 6 is coupled to the rear side of the second insulating member 12 and below the first insulating member 11 and has two latching blocks 61 respectively protruding from the left and right sides to be stuck in the first The limiting slot 122 on the second insulating member 12 and the plurality of positioning holes 62 and 63 penetrating the upper and lower sides are respectively provided for the tail portion 22 of the terminal 2 and the grounding leg 53 of the grounding metal plate 5 to prevent the positioning. The tail portion 22 and the grounding leg 53 are deformed. In this embodiment, the ends of the tail portions 22 of the upper row of terminals 2 are bent, which are soldering legs in the form of surface soldering, and are located behind the tail portion 22 of the lower row of terminals 2, and the tail portion 22 of the lower row of terminals 2 Straight down to the solder fillet in the form of a perforated weld. The soldering leg positioning member 6 is located at the rear side of the positioning hole 63 and also extends through the rear side to penetrate the tail portion 22 of the upper row of terminals 2. In addition, the soldering leg positioning member 6 further has a positioning recess 64 corresponding to the bent portion of the shielding portion 52 of the grounding metal plate 5 (see FIG. 13).

Referring to FIG. 10 and FIG. 13 to FIG. 15 , the first insulating member 11 protrudes rearward from the second insulating member 12 and protrudes downward from the bottom surface of the protruding portion. A terminal spacer block 15 is formed. The rear portion of the grounding metal plate 5 is formed with a through hole 521 through which the terminal spacer 15 passes. Referring to FIG. 13 to FIG. 15, the terminal spacers 15 are pressed against the tail portions 22 of the lower two rows of terminals 2 that are protruded rearward to prevent the tail portions 22 of the terminals 2 from being mounted upward when mounted on the circuit board 9. The bending deformation is in contact with the grounded metal plate 5 to cause a short circuit.

In summary, the novel electrical connector 100 can be shielded by an outer shield 3 cooperates with the inner shielding shell 4 to form two shielding structures to effectively shield electromagnetic radiation, and enhance the strength of the tongue plate 14 by the grounding metal plate 5 and reduce the high frequency crosstalk when the terminal 2 transmits signals, thereby achieving an improvement in electrical performance. Purpose and increase the grounding shielding effect. In addition, the insulative housing 1 is formed by a combination of the first insulating member 11 and the second insulating member 12, and the inner shield shell 4 is formed by a combination of the first metal member 44 and the second metal member 45, which facilitates manufacturing and assembly.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

1‧‧‧Insulating body

131‧‧‧ upper surface

133‧‧‧ side

134‧‧‧ front surface

135‧‧‧ channel

136‧‧‧ card slot

137‧‧‧Replacement groove

14‧‧‧ tongue plate

141‧‧‧ base

142‧‧‧Extension

143‧‧‧ upper surface

21‧‧‧Contacts

3‧‧‧Outer shield

41‧‧‧Fixed tabs

42‧‧‧Fixed tabs

44‧‧‧First metal parts

441‧‧‧ first horizontal plate

442‧‧‧First bend

443‧‧‧First Fixed Department

444‧‧‧Flexible arm

45‧‧‧Second metal parts

451‧‧‧Second horizontal plate

Claims (11)

An electrical connector is provided on a circuit board, comprising: an insulative housing having a main body and a tongue protruding forward from the main body, the tongue having a base connecting the main body and a base a plurality of terminals extending from the insulating body and having a contact portion exposed to the tongue plate and a tail portion extending from the body of the insulating body; an outer shield shell and the insulating body Combining and defining an abutting cavity around the outer space of the tongue plate; and an inner shielding shell disposed on the inner side of the outer shielding shell; the inner shielding shell covering at least the base of the tongue plate and having a plurality of positions for positioning The fixing tabs of the inner shielding shell are embedded in the insulating body to position the inner shielding shell opposite to the insulating body. The electrical connector of claim 1, wherein the inner shield case comprises at least one resilient arm extending from the inner shield shell and abutting against an inner surface of the outer shield shell, the inner shield shell Tightly fitting between the outer shielding shell and the insulating body. The electrical connector of claim 1, wherein the inner shield case comprises at least one soldering leg, the outer shield shell having a corresponding at least one through hole for receiving a corresponding soldering leg, so that the soldering leg located at the corresponding through hole is soldered The circuit board is configured to fix the inner shield shell and the outer shield shell to form a ground connection. The electrical connector of 2 or 3, wherein the body of the insulative housing has an upper surface, a lower surface, two sides connecting the upper and lower surfaces, and a front surface facing the mating cavity; the inner shield further Covering the front surface of the body. The electrical connector of claim 4, wherein the terminals are disposed on the tongue plate in upper and lower rows, the electrical connector further comprising a grounded metal plate, wherein the grounded metal plate has a An insulating body and a plate body between the upper and lower rows of terminals, and at least one grounding leg extending from the plate body to the insulating body. The electrical connector of claim 5, wherein the inner shield shell comprises two metal members, respectively a first metal member and a second metal member, the first metal member and the second metal member collectively covering the The upper and lower sides of the base of the tongue plate surround the terminals therein. The electrical connector of claim 6, wherein each of the metal members has a transverse plate portion covering the base, a bent portion extending perpendicularly from a rear end of the horizontal plate portion, and a bend from the curved portion A fixing portion of the outer edge of the folded portion extends rearward. The electrical connector of claim 7, wherein the insulative housing further has two channels respectively located on opposite sides of the base of the tongue plate and extending in the up and down direction; each metal member has a channel formed on the horizontal plate portion. Two fixing tabs on the two sides, the two fixing tabs are correspondingly placed in the corresponding slots. The electrical connector of claim 8, wherein the insulative body The main body further has a plurality of card slots, and each of the metal members has at least one fixing tab formed on the fixing portion, and the fixing tabs are correspondingly embedded in the corresponding card slots. The electrical connector of claim 8, wherein the two channels further extend rearwardly to a depth of the body of the insulative housing, and penetrate the main body up and down; the fixing convex on the horizontal plate portion of the two metal members The rear portion of the sheet is embedded in the channel on the body so as to be held in place by the body. The electrical connector of 2 or 3, wherein the front edge of the inner shield shell has at least one guiding portion which is curved, and the tongue plate is further formed with at least one retaining groove corresponding to the guiding portion, wherein A gap is formed between the front end edge of the guiding portion and the yielding groove, so that the guiding portion can be slightly moved therein.