CN109301546B

CN109301546B - Electrical connector

Info

Publication number: CN109301546B
Application number: CN201811197333.2A
Authority: CN
Inventors: 蔡友华; 何建志
Original assignee: Lotes Co Ltd
Current assignee: Lotes Co Ltd
Priority date: 2018-10-15
Filing date: 2018-10-15
Publication date: 2020-06-30
Anticipated expiration: 2038-10-15
Also published as: CN109301546A

Abstract

The invention discloses an electric connector, which comprises an insulating body; the plurality of terminals are arranged in the insulating body and comprise at least one grounding terminal; the grounding sheet is arranged on one side of the terminals and comprises a contact part, the two opposite sides of the contact part are provided with a first contact surface and a second contact surface, and the first contact surface is used for being in contact with the grounding terminals; and the abutting sheet is arranged on one side of the contact part far away from the grounding terminal and abuts against the second contact surface, force can be directly provided on the contact part, more stable holding force is provided, so that the contact part of the grounding sheet is kept in contact with the grounding terminal, and the electric connector has better high-frequency performance.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly, to an electrical connector with improved high frequency performance.

[ background of the invention ]

The existing electric connector comprises an insulating body, wherein the insulating body is provided with two opposite side walls, a slot is formed between the two side walls, a plurality of terminals are arranged in the two side walls and are arranged in a row, the terminals comprise a plurality of signal terminals and a plurality of grounding terminals, a shielding sheet is arranged on the outer side of each row of terminals, the shielding sheet extends to enable a plurality of elastic sheets to abut against the grounding terminals respectively, however, in the process of multiple plugging and unplugging, the elastic sheets swing with the grounding terminals to cause fatigue of the elastic sheets, the elastic sheets are unstable or not in contact with the grounding terminals, the shielding effect of the shielding sheets is poor, and the high-frequency performance of the electric connector is greatly influenced.

Therefore, there is a need for a new electrical connector to overcome the above problems.

[ summary of the invention ]

The invention aims to provide an electric connector which has a grounding piece stably contacted with a grounding terminal and has better high-frequency performance.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electrical connector includes an insulative housing; a plurality of terminals disposed within the insulator body, the plurality of terminals including at least one ground terminal; the grounding sheet is arranged on one side of the terminals and comprises a contact part, the two opposite sides of the contact part are provided with a first contact surface and a second contact surface, and the first contact surface is used for being in contact with the grounding terminals; and the abutting sheet is arranged on one side of the contact part, which is far away from the grounding terminal, and abuts against the second contact surface.

Furthermore, the insulating body is provided with two opposite side walls and two side plates connected with the two side walls, the two side walls and the two side plates are enclosed to form a slot with an upward opening, the side walls are provided with a plurality of terminal accommodating grooves, a plurality of terminals are respectively arranged in the terminal accommodating grooves, each terminal is provided with a contact section exposed in the slot, a welding section extends out of the insulating body, and a connecting section is connected between the contact section and the welding section.

Furthermore, the grounding piece is located a plurality of one side that the slot was kept away from to the terminal, the grounding piece includes a shielding piece and by the shielding piece to the at least first shell fragment that the ground terminal is buckled and is extended formation, the shielding piece shields a plurality of the terminal, first shell fragment have certainly the lower extreme limit of shielding piece to the ground terminal is buckled and is extended a kink that forms and the contact site, the contact site certainly the kink is vertical extension formation downwards, first contact surface is whole hugs closely the face of ground terminal.

Furthermore, the top surface of the side wall is recessed downwards to form a first fixing groove, the inner wall surface of the inner side of the first fixing groove is protruded outwards to form at least one lug, and the shielding sheet is fixedly held in the first fixing groove and is in interference fit with the lug.

Furthermore, the abutting piece is located on one side of the grounding piece far away from the slot, the abutting piece comprises a shielding piece and at least one second elastic piece formed by bending and extending the shielding piece towards the contact part, the second elastic piece is provided with an extending part formed by bending and extending the upper end edge of the shielding piece towards the contact part and an abutting part formed by upward vertical extension of the extending part, the shielding piece shields the terminals, and the abutting part is completely tightly attached to the second contact surface.

Further, the abutting portion abuts against the middle of the second contact surface.

Further, the bottom surface of the side wall is recessed upwards to form at least one groove, the contact portion and the abutting portion are arranged in the groove, the groove is communicated with the terminal accommodating groove in the left-right direction, and the grounding terminal is exposed in the groove.

Further, the second elastic sheet is provided with an arc part formed by bending and extending the abutting part away from the contact part and then close to the contact part, the arc part is arranged in the groove, and the arc part abuts against the inner wall surface of the outer side of the groove.

Further, the groove and the second fixing groove are communicated in the front-rear direction, and the inner wall surface of the outer side of the groove and the inner wall surface of the outer side of the second fixing groove are located on the same plane.

Further, a gap is formed between the arc part and the inner wall surface of the upper side of the groove.

Furthermore, the bottom surface of the side wall is recessed upwards to form at least one second fixing groove, the groove is positioned between the two second fixing grooves in the front-back direction, and the shielding piece is fixedly held in the second fixing grooves.

Compared with the prior art, the grounding piece is provided with the contact part which is contacted with the grounding terminal, the first contact surface and the second contact surface are arranged on the two opposite sides of the contact part, the first contact surface is used for being contacted with the grounding terminal, the second contact surface is used for being abutted with the abutting piece, force can be directly provided to the contact part, more stable holding force is provided, the contact part of the grounding piece is kept in contact with the grounding terminal, and the electric connector has better high-frequency performance.

[ description of the drawings ]

Fig. 1 is a partial cross-sectional view of a partially exploded perspective view of an electrical connector and an opposing member of the present invention;

FIG. 2 is a partial cross-sectional view of a partial perspective assembly of the electrical connector and the mating member of the present invention;

FIG. 3 is a cross-sectional view of the electrical connector and the mating member of the present invention;

fig. 4 is a partial exploded perspective view of the electrical connector of the present invention;

fig. 5 is a partial bottom view of the dielectric body of the electrical connector of the present invention;

fig. 6 is a partial top view of the dielectric body of the electrical connector of the present invention;

detailed description of the embodiments reference is made to the accompanying drawings in which:

side plate 12 of side wall 11 of insulating body 1 of electric connector 100

Fool-proof block 141 of slot 14 of retaining groove 131 of bottom wall 13

Terminal receiving groove 15 first fixing groove 16, projection 161 groove 17

Second fixing groove 18 terminal 2 signal terminal 2A grounding terminal 2B

Contact section 21 connecting section 22 welding section 23 grounding piece 3

The first elastic piece 32 of the shielding plate 31 has a bent portion 321 and a contact portion 322

The first contact surface 3221 and the second contact surface 3222 abut against the shielding piece 41 of the plate 4

Arc part 423 of extension 421 abutting part 422 of second elastic sheet 42

Fool-proof groove 7 of butt piece 200 of circuit board 6 of holding piece 5

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

Referring to fig. 1 and 4, an electrical connector 100 for transmitting high frequency electronic signals according to an embodiment of the present invention includes an insulating housing 1, a plurality of terminals 2 disposed in the insulating housing 1, two grounding plates 3, two supporting plates 4, and two fixing plates 5, wherein the electrical connector 100 can be fixed on a circuit board 6 (not shown) and can be plugged with a pair of connectors 200 (not shown).

Referring to fig. 1, fig. 2 and fig. 4, the insulating housing 1 is substantially longitudinal, and the insulating housing 1 includes two opposite side walls 11, two side plates 12 connecting the two side walls 11, and a bottom wall 13. The two side walls 11 and the two side plates 12 define a slot 14 with an upward opening for inserting the docking member 200, in this embodiment, the docking member 200 is an electronic card. The bottom surfaces of the side walls 11 are recessed upward to form a plurality of terminal receiving grooves 15, the terminal receiving grooves 15 are arranged in a row, the terminal receiving grooves 15 penetrate through the upper surfaces of the side walls 11, the two rows of terminal receiving grooves 15 are symmetrically arranged in the two side walls 11 relative to the insertion grooves 14, and the terminal receiving grooves 15 are communicated with the insertion grooves 14, so that the terminals 2 can be exposed in the insertion grooves 14. A fool-proof block 141 is disposed on one side of the slot 14 and connects the two sidewalls 11 and the bottom wall 13 for cooperating with the fool-proof slot 7 of the electronic card.

As shown in fig. 3, 5 and 6, a top surface of the sidewall 11 is recessed downward to form a first fixing groove 16, the first fixing groove 16 is located on a side of the terminal receiving groove 15 away from the insertion groove 14, an inner wall surface of an inner side of the first fixing groove 16 is outwardly protruded to form a plurality of protrusions 161, the protrusions 161 are extended in a vertical direction and are arranged in parallel with each other at intervals, a bottom surface of the sidewall 11 is recessed upward to form a plurality of grooves 17 and are arranged in a row in a front-back direction, the grooves 17 are located on a side of the terminal receiving groove 15 away from the insertion groove 14, and the grooves 17 are arranged in parallel with the insertion groove 14. Each of the grooves 17 is communicated with a corresponding terminal receiving groove 15 in the left-right direction, so that the terminal 2 can be exposed in the groove 17, the bottom surface of the side wall 11 is further recessed upward to form a plurality of second holding grooves 131 arranged in a row in the front-rear direction, a row of the second fixing grooves 18 is parallel to the insertion groove 14, the second fixing grooves 18 are located on one side of the terminal receiving groove 15 away from the insertion groove 14, the groove 17 is located between the two second fixing grooves 18 in the front-rear direction, the groove 17 is communicated with the second fixing grooves 18 in the front-rear direction, and the inner wall surface of the outer side of the groove 17 and the inner wall surface of the outer side of the second fixing grooves 18 are located on the same plane. The ribs 161 are offset from the grooves 17 when viewed from above. The groove 17 is upwardly communicated with the first fixing groove 16. Two ends of the bottom wall 13 are recessed upwards to form two holding grooves 131, the holding sheet 5 is held in the holding grooves 131, the holding sheet 5 is welded on the circuit board 6, and the electrical connector 100 is fixed on the circuit board 6.

Referring to fig. 2 and 4, the terminals 2 are disposed in the terminal receiving slots 15, the terminals 2 include a contact section 21, a soldering section 23 extending out of the insulating housing 1, and a connection section 22 connected between the contact section 21 and the soldering section 23, the contact section 21 is exposed in the slot 14 for electrically connecting with the electronic card, and the soldering section 23 is soldered on the circuit board 6. The plurality of terminals 2 include a plurality of ground terminals 2B and a plurality of signal terminals 2A.

As shown in fig. 2, 3 and 4, the grounding plate 3 is located on a side of the terminals 2 away from the slot 14, the grounding plate 3 includes a plate-shaped shielding plate 31 and a plurality of first elastic pieces 32 formed by bending and extending the shielding plate 31 downward, the shielding plate 31 is held in the first fixing groove 16 and interferes with the protruding member 161, and the first elastic pieces 32 are located in the groove 17. The shielding plate 31 is shielded outside the plurality of terminals 2, and the first elastic piece 32 includes a bending portion 321 formed by bending and extending the lower end edge of the shielding plate 31 toward the ground terminal 2B, and a contact portion 322 formed by vertically extending the bending portion 321 downward. The contact portion 322 is located on a side of the ground terminal 2B away from the insertion slot 14, the contact portion 322 is a portion of the ground strip 3 contacting the ground terminal 2B, the contact portion 322 contacts the ground terminal 2B, two opposite sides of the contact portion 322 have a first contact surface 3221 and a second contact surface 3222, and the first contact surface 3221 is close to the ground terminal 2B and is configured to contact the ground terminal 2B. The first contact surface 3221 is entirely in close contact with the plate surface of the ground terminal 2B. The first contact surface 3221 is a surface of the contact portion 322 contacting with the ground terminal 2B, the first contact surface 3221 is located on one side of the contact portion 322, and the second contact surface 3222 is located on the other side of the contact portion 322 opposite to the first contact surface 3221, in this embodiment, the first contact surface 3221 and the second contact surface 3222 are oppositely disposed on the left and right sides and are parallel to each other, and the first contact surface 3221 and the second contact surface 3222 have the same shape and size.

As shown in fig. 2, 3 and 4, the supporting piece 4 is located on one side of the grounding piece 3 away from the slot 14, the supporting piece 4 includes a plate-shaped shielding piece 41 and a plurality of second elastic pieces 42 formed by bending and extending the shielding piece 41 upwards, the shielding piece 41 is partially held in the second fixing groove 18, the other parts are located in the groove 17, the second elastic pieces 42 include an extending portion 421 formed by bending and extending the upper end edge of the shielding piece 41 towards the contact portion 322, a supporting portion 422 formed by vertically extending the extending portion 421 upwards, and an arc portion 423 formed by bending and extending the supporting portion 422 away from the contact portion 322 and then close to the contact portion 322, and the elastic pieces are substantially symmetrical in the up-down direction. The abutting portion 422 is located on a side of the contact portion 322 away from the ground terminal 2B, the abutting portion 422 abuts against the contact portion 322, and the second contact surface 3222 is configured to abut against the abutting portion 422, so that an abutting force provided by the abutting portion 422 can directly act on the contact portion 322, a more stable holding force is provided, and the contact portion 322 is kept in contact with the ground terminal 2B. In this embodiment, the abutting portion 422 is tightly attached to the second contact surface 3222 and located in the middle of the second contact surface 3222, the arc portion 423 abuts against an inner wall surface of the outer side of the groove 17, when the docking member 200 is plugged, due to the pressing of the docking member 200 on the contact section 21 of the terminal 2, the terminal 2 moves outward, the contact portion 322 is also pressed by the grounding terminal 2B to move outward, and the contact portion 322 presses the abutting portion 422 outward, at this time, the arc portion 423 of the abutting piece 4 abuts against the inner wall surface of the outer side of the groove 17, the second fixing groove 18 holds the shielding piece 41, so as to form two supporting points of the sidewall 11 on the abutting piece 4, the abutting portion 422 is supported by the inner wall surfaces of the groove 17 and the second fixing groove 18 after being elastically deformed outward, and the abutting portion 422 presses the contact portion 322 inward, so that the contact portion 322 is held in contact with the ground terminal 2B. The arc part 423 has a gap with the inner wall surface of the groove 17, so that the arc part 423 can slide on the inner wall surface of the groove 17, and has an elastically deformed space, and the arc part 423 can guide the arc part 423 to slide. The grounding plate 3 is closer to the slot 14 than the holding plate 4. The second fixing groove 18 fixes the shielding piece 41, so that the inner wall surface of the groove 17 and the supporting points of the inner wall surface of the second fixing groove 18 facing the supporting piece 4 are located in the same vertical plane, the second elastic piece 42 is basically symmetrical in the vertical direction, the force of the contact part 322 extruding the supporting part can be evenly distributed to the upper supporting point and the lower supporting point, and the second elastic piece 42 can be elastically deformed left and right stably.

As shown in fig. 1 and 2, in assembly, the terminal 2 is inserted into the terminal receiving groove 15 from the bottom surface of the sidewall 11, the grounding plate 3 is inserted into the first fixing groove 16 from the top surface of the sidewall 11 until the first resilient sheet 32 extends into the groove 17 and contacts with the grounding terminal 2B, and finally, the holding plate 4 is inserted into the second fixing groove 18 from the bottom surface of the sidewall 11 until the second resilient sheet 42 extends into the groove 17 and contacts with the contact portion 322.

(1) The grounding plate 3 has a contact portion 322 contacting the grounding terminal 2B, two opposite sides of the contact portion 322 have a first contact surface 3221 and a second contact surface 3222, the first contact surface 3221 is configured to contact the grounding terminal 2B, the second contact surface 3222 is configured to abut against the abutting plate 4, a force provided by the abutting plate 4 may directly act on the contact portion 322, so as to provide a more stable holding force to keep the contact portion 322 in contact with the grounding terminal 2B, and improve the high-frequency performance of the electrical connector 100.

(2) The arc part 423 of the second elastic piece 42 abuts against the inner wall surface of the outer side of the groove 17, a gap is formed between the arc part 423 and the inner wall surface of the upper side of the groove 17, when the second elastic piece 42 elastically deforms in the process of plugging and unplugging the electric connector 100 and the butting piece 200, the inner wall surface of the groove 17 can support the second elastic piece 42, the groove 17 and the gap can provide a space for the second elastic piece 42 to elastically deform, and then the abutting part 422 extrudes the contact part 322, so that the contact part 322 is firmly abutted against the ground terminal 2B.

(3) The contact portion 322 and the abutting portion 422 are disposed in the groove 17, the groove 17 is communicated with the terminal accommodating groove 15 in the left-right direction, so that the ground terminal 2B is exposed in the groove 17, and the contact portion 322 can be completely attached to the plate surface of the ground terminal 2B.

(4) The plurality of protruding ribs 161 are protruded in the first fixing groove 16, and the shielding plate 31 is fixed in the first fixing groove 16 and is in interference fit with the protruding ribs 161, so that the grounding plate 3 is stably inserted into the side wall 11 and is not easily separated from the insulating body 1.

(5) The groove 17 is communicated with the second fixing grooves 18, the groove 17 is located between the two second fixing grooves 18 in the front-back direction, the inner wall surface of the outer side of the groove 17 and the inner wall surface of the outer side of the second fixing grooves 18 are located in the same plane, the force of the contact portion 322 extruding the abutting portion can be evenly distributed to the upper supporting point and the lower supporting point, and the second elastic piece 42 can be stably deformed in a left-right elastic mode.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. An electrical connector, comprising:

an insulating body;

a plurality of terminals disposed within the insulator body, the plurality of terminals including at least one ground terminal;

the grounding sheet is arranged on one side of the terminals and comprises a contact part, the two opposite sides of the contact part are provided with a first contact surface and a second contact surface, the first contact surface is used for being in contact with the grounding terminal, the second contact surface is opposite to the first contact surface, and the first contact surface is tightly attached to the surface of the grounding terminal;

the supporting piece is arranged on one side, far away from the grounding terminal, of the contact part and comprises a shielding piece and at least one second elastic piece formed by bending and extending the shielding piece towards the contact part, the second elastic piece is provided with a supporting part which is abutted against the second contact surface, the shielding piece is abutted against the insulating body and is far away from the contact part relative to the second elastic piece, the second elastic piece is provided with a supporting part formed by bending and extending the supporting part far away from the contact part, and the supporting part is abutted against the insulating body.

2. The electrical connector of claim 1, wherein the housing has two opposing side walls and two side plates connecting the side walls, the two side walls and the two side plates define a slot opening upward, the side walls define a plurality of terminal receiving slots, the terminals are respectively disposed in the terminal receiving slots, the terminals have a contact section exposed in the slot, a soldering section extending outside the housing, and a connecting section connected between the contact section and the soldering section.

3. The electrical connector of claim 2, wherein the ground plate is located on a side of the plurality of terminals away from the slot, the ground plate includes a shielding plate and at least one first elastic piece formed by bending and extending the shielding plate toward the ground terminal, the shielding plate shields the plurality of terminals, the first elastic piece has a bending portion and the contact portion formed by bending and extending the shielding plate toward the ground terminal, the contact portion is formed by vertically extending the bending portion downward, and the first contact surface is entirely tightly attached to the surface of the ground terminal.

4. The electrical connector of claim 3, wherein the top surface of the sidewall is recessed downward to form a first fixing groove, an inner wall surface of an inner side of the first fixing groove is protruded outward to form at least one protrusion, and the shielding plate is held in the first fixing groove and is in interference fit with the protrusion.

5. The electrical connector of claim 2, wherein the abutting portion is located on a side of the ground plate away from the slot, the second resilient plate has an extending portion formed by bending and extending an upper end edge of the shielding plate toward the contact portion, and an abutting portion formed by vertically extending the extending portion upward, the shielding plate shields the plurality of terminals, and the abutting portion is entirely tightly attached to the second contact surface.

6. The electrical connector as claimed in claim 5, wherein the abutting portion abuts against a middle of the second contact surface.

7. The electrical connector of claim 5, wherein the bottom surface of the sidewall is recessed upward to form at least one recess, the contact portion and the abutting portion are disposed in the recess, the recess is connected to the terminal receiving groove in the left-right direction, and the ground terminal is exposed in the recess.

8. The electrical connector of claim 7, wherein: the supporting part is an arc part formed by bending and extending the abutting part away from the contact part and then close to the contact part, the arc part is arranged in the groove, and the arc part abuts against the inner wall surface of the outer side of the groove.

9. The electrical connector of claim 8, wherein the arcuate portion has a clearance with an inner wall surface of an upper side of the recess.

10. The electrical connector of claim 7, wherein the bottom surface of the sidewall is recessed upward to form at least one second fixing groove, the recess is located between two of the second fixing grooves in the front-rear direction, and the shielding plate is held in the second fixing grooves.

11. The electrical connector according to claim 10, wherein the groove communicates with the second fixing groove in a front-rear direction, and an inner wall surface of an outer side of the groove and an inner wall surface of an outer side of the second fixing groove are located in the same plane.