Electric connector

Abstract

The utility model relates to an electric connector, which comprises a shell with a butt joint groove, a first terminal module and an insulating body, wherein the insulating body is used for fixedly holding the first terminal module and fixedly holding the first terminal module on the shell; the first terminal module comprises a first fixing part fixed on the insulating body, a first elastic contact arm which is formed by extending forwards from one end of the first fixing part and protrudes into the butt joint groove, and a first pin part which extends out of the insulating body from the other end of the first fixing part; the first terminal module comprises a plurality of first grounding terminals and a plurality of first signal terminal pairs which are arranged along a first direction, and the length of the first grounding terminals is larger than that of the first signal terminal pairs. According to the electric connector, the first grounding terminal and the first signal terminal are arranged to be different in length, so that impedance can be effectively adjusted, and the high-frequency performance of the electric connector is improved.

Description

Technical Field

[0001] The utility model relates to an electrical connector, in particular to an electrical connector with excellent high-frequency performance.

Background Art

[0002] Referring to the prior art, the electrical connector disclosed in Chinese Utility Model Patent No. CN209169425U includes a first terminal module, a first insulating block for holding the first terminal module, a second terminal module, a second insulating block for holding the second terminal module, and a housing having a docking groove for the first insulating block and the second insulating block to be inserted. Both the first terminal module and the second terminal module include ground terminals and signal terminal pairs arranged alternately with the ground terminals. The ground terminals in the first terminal module and the second terminal module are connected in series with each other through a metal part. The first terminal module includes a fixing part fixed to the first insulating block, an elastic contact arm extending forward from one end of the fixing part and protruding into the docking groove, and a connecting foot extending out of the first insulating block from the other end of the fixing part. The fixing parts of the ground terminals and the signal terminals of the first terminal module include a horizontal section and a vertical section vertically bent and extended downward from the rear end of the horizontal section. However, in response to the development trend of high-speed transmission of electrical connectors, the industry's demand for the high-frequency performance of electrical connectors continues to increase, and the current electrical connectors can no longer meet the requirements.

Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an electrical connector capable of improving high-frequency performance.

[0004] To solve the above technical problem, the utility model can adopt the following technical solution: an electrical connector includes a housing having a docking groove, a first terminal module, and an insulating body for holding the first terminal module and fixing the first terminal module to the housing. The first terminal module includes a first fixing part fixed to the insulating body, a first elastic contact arm extending forward from one end of the first fixing part and protruding into the docking groove, and a first connecting foot extending out of the insulating body from the other end of the first fixing part. The first terminal module includes a plurality of first ground terminals and a plurality of first signal terminal pairs arranged in a first direction, and the length of the first ground terminals is greater than the length of the first signal terminal pairs.

[0005] Further, the first fixing portion of the first grounding terminal includes a first horizontal section and a first vertical section vertically and downwardly bent and extending from the rear end of the first horizontal section. The first fixing portion of the first signal terminal pair includes a second horizontal section corresponding to the first horizontal section in a first direction, an inclined section inclined and downwardly extending from the rear end of the second horizontal section, and a second vertical section corresponding to the first vertical section and bent and extending downwardly from the inclined section. When viewed in the first direction, the inclined section of the first signal terminal pair is not blocked by the first grounding terminal.

[0006] Further, the electrical connector includes a second terminal module fixed to the insulating body opposite to the first terminal module and disposed above the first terminal module. The second terminal module includes a second fixing portion fixed to the insulating body, a second elastic contact arm extending forward from one end of the second fixing portion and protruding into the docking groove, and a second connection foot extending out of the insulating body from the other end of the second fixing portion. A first metal shielding member for connecting a plurality of first grounding terminals in series is disposed between the first terminal module and the second terminal module of the electrical connector.

[0007] Further, the first metal shielding member includes a first metal shielding plate extending in a first direction to cover the first fixing portion of the first terminal module and an abutting portion bent and extending from the first metal shielding plate for connecting a plurality of first grounding terminals in series.

[0008] Further, the first metal shielding plate includes a first horizontal plate covering the first horizontal section and the second horizontal section and a first vertical plate vertically and downwardly bent and extending from the rear end of the first horizontal plate to cover the first vertical section and the second vertical section. The abutting portion includes a first abutting portion formed by tearing from the first horizontal plate and respectively abutting against the first horizontal sections of a plurality of the first grounding terminals and a second abutting portion formed by tearing from the first vertical plate and respectively abutting against the first vertical sections of a plurality of the first grounding terminals.

[0009] Further, the second terminal module includes a plurality of second grounding terminals and a plurality of second signal terminal pairs arranged in a first direction. The second fixing portion of the second grounding terminal includes a third horizontal section, a second inclined section inclined and downwardly extending from the rear end of the third horizontal section, and a third vertical section bent downwardly from the second inclined section. The second fixing portion of the second signal terminal includes a fourth horizontal section, a third inclined section inclined and downwardly extending from the rear end of the fourth horizontal section, and a fourth vertical section bent downwardly from the third inclined section. The third horizontal section, the second inclined section, and the third vertical section are respectively aligned with the fourth horizontal section, the third inclined section, and the fourth vertical section in the first direction.

[0010] Further, the electrical connector is provided with a second metal shielding member located between the first metal shielding member and the second terminal module. The second metal shielding member includes a second metal shielding plate extending in a first direction to cover a second fixing portion of the second terminal module, and an abutting portion formed by bending and extending from the second metal shielding plate to connect a plurality of second grounding terminals in series.

[0011] Further, the second metal shielding plate includes a second horizontal plate, an inclined plate formed by obliquely extending downward from the rear end of the second horizontal plate, and a second vertical plate formed by bending and extending downward from the inclined plate. The abutting portion includes a first abutting portion formed by tearing from the second horizontal plate and respectively abutting against third horizontal segments of a plurality of the second grounding terminals, and a second abutting portion formed by tearing from the second vertical plate and respectively abutting against third vertical segments of a plurality of the second grounding terminals. The inclined plate corresponds to a second inclined segment of the second grounding terminal and a third inclined segment of the second signal terminal.

[0012] Further, the first horizontal plate and the second horizontal plate are opposite to and parallel to each other, the first vertical plate and the second vertical plate are opposite to and parallel to each other, and the height of the second vertical plate is higher than that of the first vertical plate.

[0013] Further, the insulating body includes a first insulating block injection-molded on the first terminal module and the first metal shielding member, and a second insulating block injection-molded on the second terminal module and the second metal shielding member and mating with the first insulating block.

[0014] Compared with the prior art, in the present utility model, the length of the first grounding terminal of the first terminal module of the electrical connector is set to be greater than the length of the first signal terminal pair, thereby adjusting the impedance of the electrical connector and improving the high-frequency performance of the electrical connector.

Description of the Drawings

[0015] Figure 1 is a perspective view of the electrical connector of the present utility model.

[0016] Figure 2 is an exploded perspective view of the electrical connector of the present utility model.

[0017] Figure 3 is an exploded view of the electrical connector of the present utility model with the housing removed.

[0018] Figure 4 is Figure 3 another perspective exploded view.

[0019] Figure 5 is Figure 2 a further exploded perspective view with the housing and the insulating body removed.

[0020] Figure 6 is Figure 5 exploded perspective view from another angle.

[0021] Figure 7 is Figure 2 exploded perspective view of the removal of the housing and the insulating body.

[0022] Figure 8 is Figure 7 perspective view from another angle.

[0023] Figure 9 is Figure 7 side view of

[0024] Figure 10 is Figure 1 cross-sectional view along line A-A.

Detailed implementation manners

[0025] Please refer to Figures 1 to 10 As shown, the electrical connector 100 of the present utility model is a high-speed and high-frequency electrical connector for transmitting high-speed signals, which is installed on a circuit board (not shown). The electrical connector 100 is provided with a docking groove 101 for inserting a docking connector (not shown) or a circuit board (not shown). Of course, it can also be in other forms.

[0026] The electrical connector 100 includes an insulating body 1, a first terminal module 2, a second terminal module 3, a housing 4, and a metal shielding member 5 disposed between the first terminal module 2 and the second terminal module 3. The insulating body 1 includes a first insulating block 11 for holding the first terminal module 2 and a second insulating block 12 for holding the second terminal module 3 and mating with the first insulating block 11. The front end of the housing 4 is provided with a docking groove 41 and the rear end forms a mounting groove 42. The docking groove 41 is for inserting a docking connector (not shown) or a circuit board (not shown). The docking groove 41 allows the first insulating block 11 and the second insulating block 12 to hold the first terminal module 2 and the second terminal module 3 in the housing 4 respectively.

[0027] The first terminal module 2 is injection-molded on the first insulating block 11 of the insulating body 1. The first terminal module 2 includes a first fixing portion 21 fixed to the first insulating block 11, a first elastic contact arm 22 extending forward from one end of the first fixing portion 21, and a first connection foot portion 23 extending from the other end of the first fixing portion 21 out of the first insulating block 11. The first elastic contact arm 22 has a first contact portion 221 protruding upward into the docking groove 41. The first terminal module 2 includes a plurality of first ground terminals 201 and a plurality of first signal terminal pairs 202 arranged in a first direction. The first signal terminal pair 202 includes a pair of differential signal terminals 2021. The first ground terminals 201 and the first signal terminal pairs 202 are alternately arranged in the first direction.

[0028] The first fixing portion 21a of the first ground terminal 201 includes a first horizontal section 211a and a first vertical section 212a vertically bent and extending downward from the rear end of the first horizontal section 211a. The first fixing portion 21b of the first signal terminal pair 202 includes a second horizontal section 211b, an inclined section 212b extending obliquely downward from the rear end of the second horizontal section 211b, and a second vertical section 213b bent and extending downward from the rear end of the inclined section 212b. The second horizontal section 211b corresponds to the first horizontal section 211a in the first direction, and the second vertical section 213b corresponds to the first vertical section 212a in the first direction. When viewed from the first direction, the inclined section 212b of the first signal terminal pair 202 is located inside the corner formed by the first horizontal section 211a and the first vertical section 212a of the first ground terminal 201, so that the inclined section 212b of the first signal terminal pair 202 is not blocked by the first terminal 201. The length of the first ground terminal 201 is set greater than the length of the first signal terminal pair 202, thereby effectively adjusting the impedance of the electrical connector 100 and improving the high-frequency performance of the electrical connector 100.

[0029] The second terminal module 3 is opposite to the first terminal module 2 and is disposed above the first terminal module 2. The second terminal module 3 is injection-molded on the second insulating block 12 of the insulating body 1. The second terminal module 3 includes a second fixing portion 31 fixed to the second insulating block 12, a second elastic contact arm 32 extending forward from one end of the second fixing portion 31, and a second connection foot portion 33 extending out of the second insulating block 12 from the other end of the second fixing portion 31. The second elastic contact arm 32 has a second contact portion 321 protruding downward into the docking groove 41. The second contact arm 32 and the first contact arm 22 are respectively located on the upper and lower sides of the docking groove 41 to clamp a docking connector (not shown) or a circuit board (not shown) inserted into the docking groove 41. The second terminal module 3 includes a plurality of second ground terminals 301 and a plurality of second signal terminal pairs 302 arranged in a first direction. The second signal terminal pair 302 includes a pair of differential signal terminals 3021. The second fixing portion 31a of the second ground terminal 301 includes a third horizontal section 311a, a second inclined section 312a extending obliquely downward from the rear end of the third horizontal section 311a, and a third vertical section 313a bent downward from the rear end of the second inclined section 312a. The second fixing portion 31b of the second signal terminal pair 302 includes a fourth horizontal section 311b, a third inclined section 312b extending obliquely downward from the rear end of the fourth horizontal section 311b, and a fourth vertical section 313b extending by bending downward from the rear end of the third inclined section 312b. The third horizontal section 311a, the second inclined section 312a, and the third vertical section 313a are respectively aligned with the fourth horizontal section 311b, the third inclined section 312b, and the fourth vertical section 313b in the first direction.

[0030] A first metal shielding member 51 that connects a plurality of first ground terminals 201 in series is disposed between the first terminal module 2 and the second terminal module 3 of the electrical connector 100. The first metal shielding member 51 includes a first metal shielding plate 511 that extends along a first direction to cover a first fixing portion 21 of the first terminal module 2, and an abutting portion 512 that is bent and extended from the first metal shielding plate 511 to connect the plurality of first ground terminals 201 in series. The first metal shielding plate 511 covers a first fixing portion 21a of the plurality of first ground terminals 201 and a first fixing portion 21b of the plurality of first signal terminal pairs 202 to separate the first terminal module 2 from the second terminal module 3 at the fixing portion, so as to avoid signal interference from the second terminal module 3. Specifically, the first metal shielding plate 511 includes a first horizontal plate 5111 and a first vertical plate 5112 that is vertically and downwardly bent and extended from the rear end of the first horizontal plate 5111. The first horizontal plate 5111 covers the first horizontal section 211a and the second horizontal section 212a. The first vertical plate 5112 covers the first vertical section 212a and the second vertical section 213b. The junction of the first horizontal plate 5111 and the first vertical plate 5112 covers the inclined section 212b. The abutting portion 512 includes a first abutting portion 5121 that is torn from the first horizontal plate 5111 and a second abutting portion 5122 that is torn from the first vertical plate 5112. The first abutting portion 5121 abuts against the first horizontal section 211a of the plurality of first ground terminals 201, and the second abutting portion 5122 abuts against the first vertical section 212a of the first ground terminal 201. In the present utility model, the first fixing portion 21a of the first ground terminal 201 directly bends and extends at the rear end of the first horizontal section 211a to form the first vertical section 212a, which facilitates the abutment of the second abutting portion 5122.

[0031] A second metal shielding member 52 for connecting a plurality of the second grounding terminals in series is further disposed between the first metal shielding member 51 and the second terminal module 3 of the electrical connector 100. The first metal shielding member 51 and the second metal shielding member together form the metal shielding member 5. The second metal shielding member 52 includes a second metal shielding plate 521 extending in a first direction to cover the second fixing portion 31 of the second terminal module 3, and an abutting portion 522 formed by bending and extending from the second metal shielding plate 521 to connect a plurality of the second grounding terminals in series. The second metal shielding plate 521 covers the second fixing portions 31a of a plurality of second grounding terminals 301 and the second fixing portions 31b of a plurality of second signal terminal pairs 302 to further separate the first terminal module 2 and the second terminal module 3 at the fixing portion, so as to avoid signal interference between the first terminal module 2 and the second terminal module 3. The second metal shielding plate 521 includes a second horizontal plate 5211, an inclined plate 5212 formed by bending and extending obliquely downward from the rear end of the second horizontal plate 5211, and a second vertical plate 5213 formed by bending and extending downward from the rear end of the inclined plate 5212. The abutting portion 522 includes a first abutting portion 5221 formed by tearing from the second horizontal plate 5211 and a second abutting portion 5222 formed by tearing from the second vertical plate 5213. The first abutting portion 5221 abuts against the third horizontal segments 311a of a plurality of the second grounding terminals 301, and the second abutting portion 5222 abuts against the third vertical segments 313a of a plurality of the second grounding terminals 301.

[0032] The first terminal module 2 and the first metal shielding member 51 are injection-molded on the first insulating block 11. The second terminal module 3 and the second metal shielding member 52 are injection-molded on the second insulating block 12. The first horizontal plate 5111 of the first metal shielding member 51 and the second horizontal plate 5211 of the second metal shielding member 52 are opposite to and parallel to each other. The first vertical plate 5112 and the second vertical plate 5213 are opposite to and parallel to each other. The height of the second vertical plate 5213 is higher than that of the first vertical plate 5112. The first insulating block 11 has a first horizontal portion 111 and a first vertical portion 112 extending downward from the rear end of the first horizontal portion. The upper side of the first horizontal portion 111 is provided with a first protrusion 1111a and a first groove 1111b. The second insulating block 12 has a second horizontal portion 121 and a second vertical portion 122 extending downward from the rear end of the second horizontal portion. The lower side of the second horizontal portion 121 is provided with a second protrusion 1211a and a second groove 1211b. When the first insulating block 11 and the second insulating block 12 are mated, the first vertical portion 112 abuts against the second vertical portion 122 backward. The first protrusion 1111a, the first groove 1111b are respectively engaged with the second groove 1211b and the second protrusion 1211a. Further, a baffle 1212 is formed by protruding downward on the lower side of the second horizontal portion 121 of the second insulating block 12, and is located behind the second protrusion 1211a and the second groove 1211b. The baffle 1212 is for the first protrusion 1111a of the first insulating block 11 to abut against backward. In addition, a slope 123 corresponding to the second inclined section 312a, the third inclined section 312b and the inclined plate 5212 is formed at the junction of the inner sides of the second horizontal portion 121 and the second vertical portion 122 of the second insulating block 12. The height of the slope 123 in the up and down direction is the same as that of the baffle 1212, and the space between the baffle 1212 and the slope 123 is air.

[0033] The above are only the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the specification of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. An electrical connector, comprising a housing having a mating groove, a first terminal module, and an insulating body that holds the first terminal module and holds the first terminal module in the housing, wherein the first terminal module comprises a first fixing portion fixed to the insulating body, a first elastic contact arm extending forward from one end of the first fixing portion and protruding into the mating groove, and a first pin portion extending from the other end of the first fixing portion out of the insulating body, the first terminal module comprises a plurality of first grounding terminals and a plurality of first signal terminal pairs arranged along a first direction, characterized in that: The length of the first ground terminal is greater than the length of the first signal terminal pair.

2. The electrical connector according to claim 1, wherein: The first fixed portion of the first grounding terminal includes a first horizontal section and a first vertical section extending vertically downward from a rear end of the first horizontal section, the first fixed portion of the first signal terminal pair includes a second horizontal section corresponding to the first horizontal section in a first direction, an inclined section extending obliquely downward from a rear end of the second horizontal section, and a second vertical section extending downward from the inclined section corresponding to the first vertical section, and the inclined section of the first signal terminal pair is not blocked by the first grounding terminal when viewed from the first direction.

3. The electrical connector according to claim 2, wherein: The electrical connector includes a second terminal module fixed on the insulating body, opposite to the first terminal module and arranged above the first terminal module, the second terminal module includes a second fixing portion fixed to the insulating body, a second elastic contact arm extending forward from one end of the second fixing portion and protruding into the docking groove, and a second pin portion extending out of the insulating body from the other end of the second fixing portion, and the electrical connector is provided with a first metal shielding component connecting a plurality of first grounding terminals in series between the first terminal module and the second terminal module.

4. The electrical connector according to claim 3, wherein: The first metal shielding member includes a first metal shielding plate extending along a first direction to cover a first fixing portion of the first terminal module and an abutting portion extending from the first metal shielding plate and connecting a plurality of first grounding terminals in series.

5. The electrical connector according to claim 4, wherein: The first metal shielding plate includes a first horizontal plate covering the first horizontal segment and the second horizontal segment, and a first vertical plate covering the first vertical segment and the second vertical segment by bending downward vertically from the rear end of the first horizontal plate. The abutting portion includes a first abutting portion torn from the first horizontal plate to abut against the first horizontal segments of several first grounding terminals respectively, and a second abutting portion torn from the first vertical plate to abut against the first vertical segments of several first grounding terminals respectively.

6. The electrical connector according to claim 5, wherein: The second terminal module includes a plurality of second grounding terminals and a plurality of second signal terminal pairs arranged along a first direction, the second fixed portion of the second grounding terminal includes a third horizontal section, a second inclined section extending obliquely downward from a rear end of the third horizontal section, and a third vertical section bent downward from the second inclined section, the second fixed portion of the second signal terminal includes a fourth horizontal section, a third inclined section extending obliquely downward from a rear end of the fourth horizontal section, and a fourth vertical section bent downward from the third inclined section, the third horizontal section, the second inclined section, and the third vertical section are respectively aligned with the fourth horizontal section, the third inclined section, and the fourth vertical section in the first direction.

7. The electrical connector according to claim 6, wherein: The electrical connector is provided with a second metal shielding member located between the first metal shielding member and the second terminal module, the second metal shielding member includes a second metal shielding plate extending along the first direction to cover the second fixed portion of the second terminal module and an abutment portion extending and bending from the second metal shielding plate to connect a plurality of second grounding terminals in series.

8. The electrical connector according to claim 7, wherein: The second metal shielding plate includes a second horizontal plate, an inclined plate extending obliquely downward from the rear end of the second horizontal plate, and a second vertical plate bent downward and extended from the inclined plate, the abutting portion includes a first abutting portion torn from the second horizontal plate and abutting against the third horizontal segments of several second grounding terminals respectively, and a second abutting portion torn from the second vertical plate and abutting against the third vertical segments of several second grounding terminals respectively, the inclined plate corresponds to the second inclined segment of the second grounding terminal and the third inclined segment of the second signal terminal.

9. The electrical connector according to claim 8, wherein: The first horizontal plate and the second horizontal plate are opposite to and parallel to each other, the first vertical plate and the second vertical plate are opposite to and parallel to each other, and the height of the second vertical plate is higher than that of the first vertical plate.

10. The electrical connector according to claim 7, wherein: The insulating body includes a first insulating block injection-molded on the first terminal module and the first metal shielding member, and a second insulating block injection-molded on the second terminal module and the second metal shielding member and matched with the first insulating block.

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