CN106961031B

CN106961031B - Electric connector

Info

Publication number: CN106961031B
Application number: CN201710287893.6A
Authority: CN
Inventors: 彭易平
Original assignee: Smart Chip Microelectronic Co ltd
Current assignee: Smart Chip Microelectronic Co ltd
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2023-04-25
Anticipated expiration: 2037-04-27
Also published as: CN106961031A

Abstract

The invention provides an electric connector, which comprises an insulating body, a plurality of conductive terminals fixed in the insulating body, a pair of locking pieces capable of locking the butt-joint connector and a shielding shell coated outside the insulating body, wherein the insulating body is provided with an accommodating space for the insertion of the butt-joint socket connector, the conductive terminals comprise a first terminal group and a second terminal group which are arranged in two rows along the height direction, the first terminal group and the second terminal group are correspondingly and reversely arranged, each of the first terminal group and the second terminal group is respectively provided with a pair of grounding terminals and a pair of power terminals, each row of terminal groups is also provided with a pair of additional terminals respectively positioned between the grounding terminals and the adjacent power terminals, and the shielding shell is at least overlapped with one side of the additional terminals along the height direction. The additional terminals of the electric connector are overlapped with the shielding shell to enhance the electromagnetic interference resistance of the electric connector.

Description

Electric connector

Technical Field

The present invention relates to the field of connectors, and more particularly, to a reversible electrical connector.

Background

With the rapid development of science and technology in the electronic industry, the volume of electronic products is developed along the trend of being lighter, thinner and smaller, and the component sizes of the electronic products are required to be smaller, and the connector industry is the first place.

This results in better mechanical performance requirements and higher product design difficulties due to the smaller size of the new generation USB Type-C connector. In order to face lighter, thinner and finer equipment and ensure the reliability of the product structure, various manufacturers put forward corresponding structural designs in a dispute.

In an existing USB Type-C plug connector as shown in the chinese patent publication No. CN 204516988U, a metal shielding sheet and a mylar sheet are disposed between an insulating body and a shielding housing to eliminate signal interference outside two rows of terminals, but the manufacturing process and assembly of the conventional USB Type-C plug connector are complicated.

Accordingly, there is a need to provide an improved electrical connector that overcomes the above-described problems.

Disclosure of Invention

The invention aims to provide an electric connector with good electromagnetic shielding effect.

In order to achieve the above object, the present invention provides an electrical connector, which includes an insulating body, a plurality of conductive terminals fixed in the insulating body, a pair of locking pieces capable of locking the butt connector, and a shielding housing covering the insulating body, wherein the insulating body has a receiving space into which the butt connector can be inserted, the conductive terminals include a first terminal group and a second terminal group which are arranged in two rows along a height direction, the first terminal group and the second terminal group are respectively provided with a pair of grounding terminals and a pair of power terminals, each row of the terminal groups further has a pair of additional terminals respectively located between the grounding terminals and the adjacent power terminals, the heads of the additional terminals extend forward beyond the heads of other terminals in the same row, so that a contact portion of the additional terminals can be in contact with the grounding pieces arranged at the rear portion of a tongue plate of the butt connector, the housing is at least lapped with one side of the additional terminals along the height direction, the shielding housing and the second terminal group are respectively provided with a pair of grounding terminals and a pair of power terminals, the first terminal group and the second terminal group are respectively provided with a pair of grounding terminals and a pair of power terminals, each pair of additional terminals are respectively located between the grounding terminals and the adjacent power terminals, each additional terminal group has a pair of additional terminal has a tail portion which is in contact portion and an interference fit with the electrical connection end portion.

As a further improvement of the present invention, a pair of additional terminals in the first terminal group are integrally connected with corresponding additional terminals in the second terminal group, respectively.

As a further improvement of the present invention, the insulating body has a main body portion, a butt joint portion provided in front of the main body portion, and an installation portion located behind the main body portion and protruding outward, the top and bottom walls of the installation portion are respectively formed with a pair of slots penetrating in the height direction, the slots on the top wall are respectively aligned with the slots on the bottom wall in the height direction, and the slots are respectively communicated with corresponding terminal slots on the insulating body, and the mating portions are inserted into the corresponding slots.

As a further improvement of the invention, the mounting part is also provided with containing holes concavely arranged from the top wall and the bottom wall to the inner side, the containing holes are positioned at the inner side of the corresponding slots and are communicated with the slots, the upper side and the lower side of the matching part are respectively provided with concave parts, and the elastic sheet of the shielding shell inwards extends into the containing holes and the concave parts of the additional terminals respectively and is overlapped with the corresponding additional terminals.

As a further improvement of the present invention, the mating portion of the additional terminal has a height greater than that of the holding portion thereof to form an abutment surface at the front end of the mating portion, the abutment surface being abutted forward against the blocking surface forming the receiving hole.

As a further improvement of the present invention, the top wall or the bottom wall of the shielding housing is provided with a pair of slits, the mounting portion is further provided with insertion portions protruding outward from the top wall or the bottom wall thereof, the insertion portions are located outside the corresponding receiving holes, and the insertion portions are inserted forward from behind and received in the corresponding slits.

As a further improvement of the present invention, the pair of latching pieces are disposed outside the conductive terminals in a lateral direction, and each latching piece has a base portion, a latching arm at a front end thereof, a fixing portion interference-fitted with the insulative housing, and at least one grounding portion at a rear end thereof to be connected to the circuit board.

The beneficial effects of the invention are as follows: the electric connector is provided with the additional terminal which is positioned between the grounding terminal and the power terminal and is overlapped with the shielding shell to enhance the electromagnetic interference resistance of the electric connector.

Drawings

FIG. 1 is a perspective assembly view of an electrical connector of the present invention;

FIG. 2 is another view of the electrical connector of FIG. 1;

fig. 3 is an exploded perspective view of the electrical connector of fig. 1;

FIG. 4 is another view of the electrical connector of FIG. 3;

FIG. 5 is a perspective assembly view of the electrical connector of FIG. 2 with the shielding housing removed;

fig. 6 is a front view of the electrical connector of fig. 5;

fig. 7-8 are schematic cross-sectional views of the electrical connector of fig. 2 taken along linebase:Sub>A-base:Sub>A;

fig. 9 is a schematic cross-sectional view of the electrical connector of fig. 2 taken along line B-B.

Detailed Description

The present invention will be described in detail below with reference to the embodiments shown in the drawings. These embodiments are not intended to limit the invention and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the invention.

Referring to fig. 1 to 9, an electrical connector 100 according to a preferred embodiment of the invention is shown, wherein the electrical connector 100 includes an insulative housing 1, a plurality of conductive terminals 2 fixed in the insulative housing 1, a locking member 3, a shielding housing 4 covering the insulative housing 1, and a circuit board (not shown) disposed behind the insulative housing 1 and electrically connected to the conductive terminals 2.

As shown in fig. 2 to 9, the insulating body 1 has a main body 11, a mating portion 12 disposed in front of the main body 11, and an installation portion 13 disposed behind the main body 11 and protruding outward, wherein the main body 11 and the mating portion 12 are integrally formed in an elliptical columnar shape, and a receiving space 120 disposed in a forward open manner is formed inside the mating portion 12 for inserting the mating socket connector in a forward or reverse direction. The inner sides of the top wall and the bottom wall of the insulating body 1 are respectively provided with a plurality of terminal grooves 10, and the terminal grooves 10 extend forward from the rear end surface of the insulating body 1 to the inner side of the abutting part 12 and are communicated with the accommodating space 120. In this embodiment, a portion of the terminal receiving grooves 10 formed in the top wall of the insulating body 1 are communicated with the corresponding terminal grooves 10 formed in the bottom wall in the height direction, and another portion of the terminal receiving grooves 10 are independent from the corresponding terminal grooves 10 formed in the bottom wall in the height direction, that is, are not communicated with each other.

The butt joint part 12 has a top wall 121 and a bottom wall 122 disposed opposite to the top wall 121, the top wall 121 and the bottom wall 122 have a pair of slots 123 penetrating therethrough in a height direction, the pair of slots 123 of the top wall 121 are disposed opposite to and aligned with the pair of slots 123 on the bottom wall 122 in the height direction, the pair of slots 123 disposed opposite to each other in the height direction form a group, the butt joint part 12 has two groups of slots 123 located on both sides in a transverse direction, and each group of slots 123 is communicated with the corresponding terminal groove 10 on the inner side and the rear side thereof.

The top wall and the bottom wall of the mounting portion 13 are respectively penetrated and formed with a pair of slots 131 along the height direction, the slots 131 on the top wall are respectively aligned with the slots 131 on the bottom wall along the height direction, and the slots 131 are respectively communicated with the corresponding terminal slots 10. Meanwhile, the grooves 131 are aligned with the corresponding slots 123 of the docking portion 12 in the front-rear direction, respectively. The mounting portion 13 further has a receiving hole 132 recessed inward from the top and bottom walls thereof and an insertion portion 133 protruding outward from the top and bottom walls thereof, the receiving hole 132 being located inside the corresponding slot 131 and communicating with the slot 131, the insertion portion 133 being located outside the corresponding receiving hole 132, and in this embodiment, the top and bottom walls of the mounting portion 13 are each provided with a pair of slots 131, a pair of receiving holes 132, and a pair of insertion portions 133. A boss 134 is formed to protrude downward from the center of the bottom wall of the mounting portion 13, and the boss 134 is located at the rear end of the mounting portion 13.

The two sides of the insulating body 1 are respectively provided with a through groove 14 extending along the front-rear direction, a holding groove 15 and a notch 16 positioned in front of the corresponding through groove 14, the holding groove 15 is communicated with the through groove 14 and the notch 16 on the corresponding side along the front-rear direction, the through groove 14 is positioned at the corresponding positions on the two sides of the main body 11, and the holding groove 15 is positioned at the corresponding positions on the two sides of the mounting part 13 and penetrates the mounting part 13 along the front-rear direction.

Referring to fig. 3 to 9, the conductive terminals 2 include a first terminal set 21 and a second terminal set 22 arranged in two rows along the height direction, and the first terminal set 21 and the second terminal set 22 are correspondingly and reversely arranged. The first terminal set 21 includes a pair of ground terminals 20a, a pair of additional terminals 20b, a pair of power terminals 20c, a detection terminal 20d (CC 1 for detecting the positive and negative insertion and identifying the CABLE) and a pair of signal terminals 20f, and the detection terminal 20d and the pair of signal terminals 20f are located in the middle of the first terminal set 21, i.e., between the pair of power terminals 20c, the pair of ground terminals 20a are located at the outermost side, the pair of power terminals 20c are located at the outer side of the detection terminal 20d or the signal terminal 20f, and the pair of additional terminals 20b are located at the inner side of the adjacent ground terminals 20a and the outer side of the power terminals 20 c. In the present embodiment, the second terminal group 22 is different from the first terminal group 21 in that the second terminal group 22 is provided with less one pair of signal terminals 20f (see fig. 6).

Each of the conductive terminals 2 has an elastic contact arm 201 protruding into the accommodating space 120, a holding portion 202 fixed in the terminal slot 10 of the insulating body 1, and a tail portion 203 extending backward from the holding portion 202 and protruding out of the insulating body 1, wherein the contact arms 201 are disposed on the upper side and the lower side of the accommodating space 120 in two rows.

The additional terminal 20b further has a mating portion 204 located between the holding portion 202 and the tail portion 203, and the height of the mating portion 204 is greater than that of the holding portion 202, so that an abutment surface 2041 is formed at the front end of the mating portion 204, and at the same time, concave portions 2042 are respectively provided at the upper and lower sides of the mating portion 204.

In this embodiment, the contact arm 201 protrudes upward or downward into the accommodating space 120, and has a contact portion 2011 at a free end thereof, and the contact portion 2011 protrudes toward the corresponding contact arm 201 in the other row to clamp a tongue piece (not shown) of a mating connector between the contact portions 2011. The top or bottom of the tail portions 203 protrude toward the opposite tail portions 203 to form a holding portion 2031, and the holding portion 2031 is disposed near the rear end of the conductive terminal 2, so that the holding portions 2031 of the tail portions 203 of the upper and lower rows protrude toward each other to sandwich a circuit board (not shown) therebetween.

Meanwhile, the terminal groove 10 corresponds to the contact portion 2011 of the conductive terminal 2 up and down, so as to provide a space for the contact portion 2011 of the conductive terminal 2 to float outwards, which is convenient for plugging the mating connector. The contact portions 2011 of the first terminal set 21 and the second terminal set 22 are arranged at the same positions on the insulating body 1 as the butt joint portions of the corresponding terminals on the standard USB Type-C plug connector.

In the present embodiment, the holding portions 202 of the ground terminal 20a, the additional terminal 20b, and the power terminal 20c in the first terminal group 21 are integrally connected with the holding portions 202 of the corresponding conductive terminals in the second terminal group 22 in the height direction, respectively, so as to form a conjoined terminal. When in assembly, the conjoined terminals in the first terminal group 21 and the second terminal group 22 can be assembled into the insulating body 1 at the same time, thereby bringing great convenience to assembly. The detection terminal 20d and the signal terminal 20f in the first terminal set 21 are independent from the corresponding conductive terminals in the second terminal set 22, thereby forming independent terminals.

When assembled, the first terminal set 21 and the second terminal set 22 are assembled and fixed in the corresponding terminal groove 10 of the insulating body 1 from back to front, respectively. The contact arms 201 of the additional terminals 20b vertically correspond to the slots 123 of the insulating body 1, so as to provide a space for the contact arms 201 to float outwards, facilitate the plugging of the mating connector, the mating portions 204 are inserted into the corresponding slots 131, and the abutting surfaces 2041 are abutted forward against the blocking surfaces 1320 forming the receiving holes 132.

The front ends of the contact arms 201 of the ground terminal 20a and the power terminal 20c are flush with the front ends of the detection terminals 20d in the same-row terminal group in the lateral direction, and the front ends of the contact arms 201 of the additional terminals 20b protrude forward beyond the front ends of the other terminals in the same-row terminal group, that is, the heads of the additional terminals 20b extend forward beyond the heads of the other terminals in the same-row terminal group, so that the contact portions 2011 of the additional terminals 20b are in contact with the ground member provided at the rear of the tongue plate of the mating receptacle connector (not shown).

The distance between the pair of contact portions 2011 of the pair of additional terminals 20b disposed opposite to each other in the height direction is larger than the distance between any other two of the opposite contact portions 2011 of the two terminal groups (first and second terminal groups), and the distance between the contact portions 2011 of the pair of ground terminals 20a disposed opposite to each other in the two terminal groups is the same as the distance between the contact portions 2011 of the pair of power terminals 20c disposed opposite to each other. That is, in the height direction, the contact arms 231 of the two opposing individual terminals 23 are located between the pair of contact arms 201 of the additional terminal.

The locking members 3 are made of metal, in this embodiment, the locking members 3 are a pair of opposite locking members 3, and the pair of locking members 3 are laterally disposed outside the conductive terminal 2, where each locking member 3 has a base 31, a locking arm 32 at a front end thereof, a fixing portion 33 interference-fitted with the mounting portion 13 of the insulating body 1, and at least one grounding portion 34 at a rear end thereof. In this embodiment, the fixing portion 33 is disposed near the grounding portion 34, and the fixing portion 33 is a protruding spike protruding from the inner side of the base portion 31 toward the other locking member 3 to be interference-fitted with the mounting portion 13, and the fixing portion 33 extends obliquely rearward and inward. The latch arms 32 extend forward from the front end of the base 31, and are disposed at both ends of the latch 3 in the front-rear direction, opposite to the grounding portion 34. In this embodiment, the locking member 3 has a vertically symmetrical structure, and a pair of grounding portions 34 are disposed at the rear end thereof and are opposite to each other in the height direction.

When the locking member 3 is assembled into the insulating body 1, the locking member 3 is sequentially inserted into the holding groove 15 and the through groove 14 of the insulating body 1 from back to front, wherein the locking arms 32 pass through the corresponding through grooves 14 and are exposed in the notches 16 on two sides of the insulating body 1 in the transverse direction so as to be locked and held with the mating connector. The base 31 is limited in the through slot 14, the fixing portion 33 is accommodated in the holding slot 15 and is in interference fit with the mounting portion 13 of the insulating body 1, and the grounding portion 34 is exposed at the rear side of the rear end surface of the mounting portion 13 to be mechanically and electrically connected with the circuit board (not shown), so that the locking device 3 not only can lock the butt connector, but also has a grounding effect.

The front end of the shielding shell 4 is provided with an oval butt joint frame opening which is consistent with the butt joint frame opening of the standard USB Type-C plug connector and is used for being matched with the positive and negative insertion of the butt joint socket connector, and the shielding shell has the advantage of convenience in use, wherein both positive and negative insertion is applicable. The shielding shell 4 is provided with a frame 41 and a pair of extending parts 42 which protrude backwards from the frame 41 and are oppositely arranged, the extending parts 42 are rear end parts of the top wall and the bottom wall of the shielding shell 4, each extending part 42 is provided with a pair of elastic sheets 421 in a bending way towards the inner side, one extending part 42 is also provided with a notch 422 positioned at the middle part of the extending part along the transverse direction, and the notch 422 is recessed forwards from the rear end surface of the shielding shell 4; in other embodiments, the corresponding notches 422 may be formed on the pair of extending portions 42 of the shielding shell 4. The shield case 4 further has a connecting portion 43 connecting the extending portion 42 with the frame portion 41, the connecting portion 43 extending obliquely upward from front to rear so that the extending portion 43 is located outside the top wall or the bottom wall of the frame portion 41 in the height direction. The top wall and/or the bottom wall of the shielding housing 4 is provided with a pair of slits 44, and the pair of slits 44 are located on both sides of the extension 42 on the same side in the lateral direction.

The shielding shell 4 is sleeved outside the insulating body 1 from front to back, wherein the frame portion 41 is sleeved outside the main body portion 11 and the butt portion 12, and the protruding block 134 is limited in the notch 422. The insertion portions 133 are inserted from the rear to the front and are accommodated in the corresponding slits 44, and the extension portions 42 are respectively located at both sides of the mounting portion 13 of the insulating body 1 in the height direction.

The contact arm 201 of the additional terminal 20b is configured to contact with a grounding member on the mating connector, and the elastic sheet 421 of the shielding shell 4 extends into the accommodating hole 132 of the insulating body 1 and the recess 2042 of the additional terminal 20b, and is overlapped with the corresponding additional terminal 20b, where a specific overlapping manner may be mechanical connection or laser welding, so as to achieve mechanical and electrical connection, further achieve an anti-electromagnetic interference effect, and enhance EMC (electromagnetic compatibility) performance of the electrical connector. In this embodiment, the upper and lower sides of the shielding case 4 overlap the corresponding additional terminals 20b, and in other embodiments, only one side of the shielding case 4 in the height direction overlaps the additional terminals 20b, that is, the upper side or the lower side (i.e., the top wall or the bottom wall) of the shielding case 4 is bent toward the inside thereof to provide the spring sheet 421. In general, the shielding case 4 overlaps at least one side of the additional terminal 20b in the height direction.

It should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is for clarity only, and that the skilled artisan should recognize that the embodiments may be combined as appropriate to form other embodiments that will be understood by those skilled in the art.

The above list of detailed descriptions is only specific to practical embodiments of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications that do not depart from the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an electric connector, its includes the insulator, be fixed in a plurality of conductive terminal in the insulator, but a pair of hasp spare and cladding of hasp butt joint connector in the outer housing that shields of insulator, the insulator has the accommodation space that can supply butt joint connector male, conductive terminal includes and is first terminal group and the second terminal group that two rows set up along the direction of height, first terminal group and second terminal group are corresponding and reverse the arranging, first terminal group and second terminal group all are provided with a pair of ground connection terminal and a pair of power terminal, its characterized in that: each row of terminal sets is also provided with a pair of additional terminals respectively positioned between the grounding terminals and the adjacent power terminals, the heads of the additional terminals extend forwards beyond the heads of other terminals in the same row so that the contact parts of the additional terminals can be contacted with the grounding piece arranged at the rear part of the tongue plate of the butt connector, the shielding shell is at least overlapped with one side of the additional terminals along the height direction, the top wall and/or the bottom wall of the shielding shell are/is bent towards the inside and provided with elastic sheets which are mechanically and electrically connected with the additional terminals, the additional terminals are provided with tail parts which extend backwards beyond the rear end surface of the insulating body to be connected with the circuit board, the additional terminals are provided with contact arms protruding into the accommodating space, fixing parts which are in interference fit with the insulating body and matching parts positioned between the fixing parts and the tail parts, and the elastic sheets are abutted with the matching parts.

2. The electrical connector of claim 1, wherein: a pair of additional terminals in the first terminal group are integrally connected with corresponding additional terminals in the second terminal group, respectively.

3. The electrical connector of claim 1, wherein: the insulator comprises a main body part, a butt joint part arranged in front of the main body part and an installation part which is arranged behind the main body part and protrudes outwards, wherein a pair of slots are formed in the top wall and the bottom wall of the installation part in a penetrating mode along the height direction respectively, the slots on the top wall are aligned with the slots on the bottom wall along the height direction respectively, the slots are communicated with corresponding terminal slots on the insulator respectively, and the matching parts are inserted into the corresponding slots.

4. The electrical connector of claim 3, wherein: the mounting part is also provided with an accommodating hole concavely arranged from the top wall and the bottom wall to the inner side, the accommodating hole is positioned at the inner side of the corresponding grooving and is communicated with the grooving, the upper side and the lower side of the matching part are respectively provided with a concave part, and the elastic sheet of the shielding shell inwards extends into the accommodating hole and the concave part of the additional terminal respectively and is overlapped with the corresponding additional terminal.

5. The electrical connector of claim 4, wherein: the height of the matching part of the additional terminal is larger than that of the fixing part of the additional terminal, so that an abutting surface is formed at the front end of the matching part, and the abutting surface is abutted forward against the blocking surface forming the accommodating hole.

6. The electrical connector of claim 4, wherein: the top wall or the bottom wall of the shielding shell is provided with a pair of slits, the mounting part is also provided with an inserting part protruding outwards from the top wall or the bottom wall of the mounting part, the inserting part is positioned outside the corresponding accommodating hole, and the inserting part is inserted forwards from back to front and is accommodated in the corresponding slits.

7. The electrical connector of any one of claims 1 to 6, wherein: the pair of locking pieces are transversely arranged on the outer sides of the conductive terminals, and each locking piece is provided with a base part, a locking arm positioned at the front end of the base part, a fixing part in interference fit with the insulating body and at least one grounding part positioned at the rear end of the base part and connected with the circuit board.