CN209981590U - Electrical connector - Google Patents

Abstract

The utility model provides an electric connector, it includes insulator, is fixed in a plurality of conductive terminals in the insulator and cladding in the outer casing that shields of insulator, conductive terminal includes first terminal group and the second terminal group that is two rows of settings along the direction of height, insulator includes the base, assembles extremely the last body and the lower body of base, first terminal group and second terminal group inlay respectively and bury and be fixed in body and lower body to form last terminal assembly and lower terminal assembly, conductive terminal in first, the second terminal group all includes that fixing portion has the first type terminal of first width and fixing portion has the second type terminal of second width on the transverse direction in transverse direction, first width is greater than the second width. The utility model discloses electric connector can transmit great electric current and have good high frequency characteristic.

Description

Electrical connector

Technical Field

The utility model relates to an electric 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 thinner, thinner and shorter, which requires smaller and smaller components of the electronic products, 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 requirements of the new generation of USB Type-C connectors. In order to face thinner and thinner equipment and ensure the reliability of a product structure, various manufacturers have proposed corresponding structural designs.

The existing USB Type-C plug connector generally comprises an upper end sub-module, a central shielding piece, a lower end sub-module, an insulating body, a lower shielding plate, an upper shielding plate and a shielding shell, wherein the lower end sub-module comprises a lower insulating piece and a plurality of lower conductive terminals embedded and formed with the lower insulating piece, the upper end sub-module comprises an upper insulating piece and a plurality of upper conductive terminals embedded and formed with the upper insulating piece, the central shielding piece is clamped between the lower end sub-module and the upper end sub-module, the lower end sub-module and the upper end sub-module are installed in the insulating body, the lower shielding plate and the upper shielding plate are respectively arranged on the bottom surface and the surface of the insulating body, and the shielding shell covers the insulating body. However, the plug connector has a limited ability to transmit current and is liable to generate crosstalk when transmitting high frequency signals, resulting in poor high frequency characteristics.

In view of the above, there is a need for an improved electrical connector to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric connector that can transmit great electric current and have good high frequency characteristic.

In order to realize the above object, the utility model provides an electric connector, it has insulator, is fixed in a plurality of conductive terminals in the insulator and cladding in the outer casing that shields of insulator, conductive terminal includes and is two rows of first terminal group and the second terminal group that sets up along the direction of height, insulator includes the base, assembles extremely the last body and the lower body of base, first terminal group and second terminal group inlay respectively and bury and be fixed in body and lower body in to form last terminal assembly and lower terminal assembly, conductive terminal in first, the second terminal group all includes that fixing portion has the first type terminal of first width and fixing portion has the second type terminal of second width on the transverse direction, first width is bigger than the second width.

As a further improvement of the present invention, the first and second terminal sets each include a pair of ground terminals located at the outermost side and a pair of power terminals located at the inner side of the ground terminals, and the ground terminals are first-type terminals.

As a further improvement of the present invention, the first and second terminal sets further include a high-speed signal terminal located between the ground terminal and the adjacent power terminal, and the high-speed signal terminal is a second-type terminal.

As a further improvement of the present invention, the power terminal is a first kind of terminal, and the first width is 1.2 to 1.4 times of the second width.

As a further improvement of the present invention, the first and second terminal sets further have a high-speed signal terminal located between the ground terminal and the adjacent power supply terminal, and the high-speed signal terminal is a second-type terminal.

As a further improvement of the present invention, the electrical connector further has an assembly in insulator's latch member, the latch member has a pair of latch arms that are located conductive terminal both sides in the transverse direction and extend along the transverse direction and will a pair of crossbeam that the latch arms link to each other, the latch member still has certainly the crossbeam extends a pair of convex parts that form forward, a pair of convex parts set up and stretch into forward along the transverse direction interval in the slot that forms in the upper and lower body.

As a further improvement of the present invention, the upper and lower bodies have a joining section located at the front side and an extending section located at the rear side, the joining section of the upper and lower bodies is stacked along the height direction, and the extending section of the upper and lower bodies is disposed along the height direction at an interval so as to form an accommodating space between the upper and lower bodies.

As a further improvement of the present invention, the upper and lower bodies each further have a pair of slots formed by recessing forward from the rear surface of the joining section thereof, and the upper body is a pair of the slots are aligned and linked together with the corresponding slots of the lower body along the height direction to accommodate the convex portions together.

As a further improvement of the present invention, in the transverse direction, the orthographic projection of a pair of adjacent high-speed signal terminals in the first and second terminal sets on the horizontal plane falls into the corresponding orthographic projection of the convex portion on the horizontal plane.

As a further improvement of the present invention, each of the convex portions has a width in the transverse direction ranging from 0.7 mm to 1.27 mm.

The utility model has the advantages that: the utility model discloses electric connector can transmit great electric current and have good high frequency characteristic.

Drawings

Fig. 1 is a perspective assembly view of the electric connector of the present invention.

Fig. 2 is a view of the electrical connector of fig. 1 from another perspective.

Fig. 3 is a partially exploded view of the electrical connector shown in fig. 1.

Fig. 4 is a further exploded view of the electrical connector shown in fig. 3.

Fig. 5 is a partial assembled view of the electrical connector of fig. 4 with the shield shell removed.

Fig. 6 is a further assembled view of the electrical connector shown in fig. 5.

Fig. 7 is a top view of a row of conductive terminals in the electrical connector of fig. 3.

Fig. 8 is a cross-sectional view of the base of the electrical connector shown in fig. 3.

Fig. 9 is a rear view of the electrical connector of fig. 1 with the shielding shell and the locking member removed.

Fig. 10 is a cross-sectional view of the electrical connector of fig. 1.

Fig. 11 is a cross-sectional view of the electrical connector of fig. 1 with the shutter housing removed.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. However, the present invention is not limited to the embodiment, and the structural, method, or functional changes made by those skilled in the art according to the embodiment are all included in the scope of the present invention.

Referring to fig. 1 to 11, in order to illustrate a preferred embodiment of the electrical connector 100 of the present invention, the electrical connector 100 includes an insulating housing 1, a plurality of conductive terminals 2 fixed in the insulating housing 1, a locking member 3 assembled in the insulating housing 1, a shielding shell 4 covering the insulating housing 1, and a pair of metal spring pieces 5 disposed between the insulating housing 1 and the shielding shell 4.

As shown in fig. 3 to 11, the insulation body 1 has a base 11 disposed in an oval column shape, a plugging space 110 for the plug-in connector to be plugged in forward or backward is formed inside the base 11, and a plurality of terminal slots 111 are formed in a front portion of the base 11. In this embodiment, the insulative housing 1 further includes an upper body 12 and a lower body 13 assembled into the base 11, the upper body 12 and the lower body 13 are stacked and assembled together along a height direction of the electrical connector 100 and then inserted into the base 11, the base 11 has a top wall 112 and a bottom wall 113 oppositely disposed along the height direction, and the top and bottom walls 112, 113 extend rearward beyond a rear end surface 130 of the upper and lower bodies 12, 13.

The outer surfaces of the top wall 112 and the bottom wall 113 are respectively provided with an accommodating area 114 formed by sinking towards the direction of the inserting space 110 and a plurality of accommodating holes 115 formed by penetrating, the accommodating areas 114 are respectively arranged by being opened upwards or downwards to accommodate the metal elastic sheet 5, and the accommodating holes 115 are respectively communicated with the accommodating areas 114 on the same side. The top wall 112 and the bottom wall 113 are respectively provided with a pair of combining holes 116 disposed oppositely and located at two sides of the corresponding accommodating region 114.

In addition, the top and bottom walls 112, 113 respectively have guiding surfaces 1121, 1131 at least partially protruding from the rear side of the rear end surface 130. Each of the guiding surfaces 1121, 1131 extends obliquely to the rear surface of the top wall 112 or the bottom wall 113 along a direction disposed at an angle with the horizontal direction, and a pair of the guiding surfaces 1121, 1131 are disposed oppositely along the height direction and form a trumpet-shaped guiding cavity with an enlarged rear opening, so that the upper and lower bodies 12, 13 can be smoothly assembled into the base 11.

The top and bottom walls 112, 113 further have at least one protrusion 1122 protruding from the outer surface thereof, and each protrusion 1122 extends in the front-back direction to enhance the sealing property between the base 11 and the shielding shell 4 after the base is installed in the shielding shell 4.

The base 11 further has a pair of sidewalls 117 connecting the top wall 112 and the bottom wall 113, and the terminal groove 111 does not penetrate the top wall 112 and the bottom wall 113 in the height direction, that is, the conductive terminals 2 are not exposed outside the top wall 112 or the bottom wall 113 when viewed from the upper side or the lower side, so that no insulating mylar is required to be used on the upper side and the lower side of the base 11, the number of parts is reduced, the manufacturing cost of the product is reduced, and the assembling process of the electrical connector 100 is also reduced, so that the assembly of the electrical connector 100 is simpler and more convenient, and the production efficiency of the product is effectively improved.

The two sides of the base 11 are respectively provided with a slot 1171 formed by penetrating the corresponding side wall 117, and a pair of the slots 1171 are respectively opened laterally and outwards and formed by extending from the rear surface of the base 11 to the front in a concave manner, and are transversely communicated with the plugging space 110 at the two sides of the base 11. The base 11 has a mounting space 1103 recessed from the rear toward the front, and the pair of slots 1171 are disposed on both sides of the base 11 in the lateral direction and communicate with the mounting space 1103.

The upper and lower bodies 12, 13 each have a coupling section 121, 131 at the front side and an extension section 122, 132 at the rear side, the coupling sections 121, 131 of the upper and lower bodies 12, 13 are stacked in the height direction, and the extension sections 122, 132 of the upper and lower bodies 12, 13 are spaced apart in the height direction to form an accommodating space 120 therebetween.

The upper body 12 and the lower body 13 are respectively provided with at least one positioning portion 1201, 1301 on the side deviating from each other in the height direction, the top wall 112 and the bottom wall 113 are respectively provided with at least one positioning hole 1102, and the positioning portions 1201, 1301 are matched with the corresponding positioning holes 1102 to fix the upper body 12 and the lower body 13 in the base 11. In this embodiment, the sides of the upper body 12 and the lower body 13 away from each other are respectively provided with a pair of positioning portions 1201, 1301 arranged at intervals in the transverse direction.

Meanwhile, the upper and lower bodies 12 and 13 are provided with through holes 1202 and 1302 capable of exposing the corresponding conductive terminal 2 to the outside so as to support and position the conductive terminal 2 when the upper and lower bodies 12 and 13 are molded, and in this embodiment, at least one through hole 1202 and 1302 is disposed on each of the upper and lower sides of the upper and lower bodies 12 and 13.

Each of the upper and lower bodies 12, 13 further has a pair of insertion grooves 133 formed by being recessed forward from the rear surface of the coupling sections 121, 131 thereof, and the pair of insertion grooves (not shown) of the upper body 12 is aligned in the height direction and communicates with the corresponding insertion grooves 133 of the lower body 13.

In addition, the upper and lower bodies 12, 13 further have fixing structures assembled and fixed to each other, and the fixing structures include at least one positioning protrusion 124, 134 and a positioning groove 135 in interference fit with the positioning protrusion 124, 134. In the present embodiment, the upper body 12 and the lower body 13 are provided with one positioning protrusion 124, 134 and one positioning groove 135.

The coupling sections 121, 131 of the upper and lower bodies 12, 13 are respectively formed with bosses 1211, 1311 protruding outwards at both sides in the transverse direction, and the bosses 1211, 1311 protrude into the slots 1171 at the corresponding sides. Further, as shown in fig. 10, the bosses 1211, 1311 located on different sides in the lateral direction extend rearward while having a tendency to come closer toward each other.

The conductive terminals 2 comprise a first terminal set 21 and a second terminal set 22 which are arranged in two rows along the height direction, wherein the first terminal set 21 and the second terminal set 22 are arranged correspondingly and reversely and are consistent with the standard USBType C terminal arrangement. The first terminal set 21 and the second terminal set 22 are embedded and fixed in the upper body 12 and the lower body 13 respectively to form an upper terminal assembly and a lower terminal assembly, which are assembled in the height direction and then inserted into the base 11, so that the base 11 forms a fully enclosed structure in the upper and lower bodies 12, 13, thereby ensuring the structural stability of the electrical connector 100.

The conductive terminals 2 in the first terminal set 21 and the corresponding conductive terminals 2 in the second terminal set 22 are arranged in a mirror image. Each of the conductive terminals 2 has an elastic contact arm 201 protruding into the insertion space 110, a holding portion 202 fixed in the upper body 12 or the lower body 13, and a tail portion 203 extending rearward from the holding portion 202 and protruding out of the insulating body 1, wherein the contact arms 201 are arranged in two rows opposite to each other on the upper side and the lower side of the insertion space 110. In the present embodiment, the contact arms 201 protrude upward or downward into the plugging space 110, and have contact portions 2011 at free ends thereof, and the contact portions 2011 protrude toward the corresponding contact arms 201 in the other row.

When the upper and lower bodies 12, 13 are not mounted in the housing 11, the holding portion 202 of the conductive terminal 2 is exposed to the outside air through the corresponding through holes 1202, 1302 of the upper and lower bodies 12, 13; when the upper and lower bodies 12, 13 are installed in the base 11, the through holes 1202, 1302 are blocked by the top wall 112 or the bottom wall 113 of the base 11.

Referring to fig. 7 and 10, the conductive terminals in the first and second terminal sets 21 and 22 each include a first type of terminal having a first width in the transverse direction of the holding portion 202 and a second type of terminal having a second width in the transverse direction of the holding portion 202, wherein the first width is greater than the second width; preferably, the first width is 1.2 to 1.4 times the second width.

In the present embodiment, the width of the holding portion 202 of each conductive terminal 2 in the transverse direction is always consistent from back to front, and the width is extended to the contact arm 201 without change, so that the width of the other parts of the contact arm except the front section is the same as the width of the holding portion 202; in other embodiments, the width of the holding portion 202 in the transverse direction may also vary, that is, the width of the holding portion 202 of the first type terminal may be larger than the width of the corresponding portion of the second type terminal to satisfy the above condition, so that not only a larger current may be transmitted, but also good high frequency characteristics may be ensured.

Meanwhile, each of the first and second terminal sets 21 and 22 includes a pair of ground terminals 20a located at the outermost side and a pair of power terminals 20b located at the inner side of the ground terminals 20a, where the ground terminals are first-type terminals, and the power terminals 20b are also first-type terminals, so that the electrical connector 100 can transmit a large current.

The first and second terminal sets 21 and 22 further have high-speed signal terminals 20c located between the ground terminal 20a and the adjacent power terminal 20b, the high-speed signal terminals 20c are arranged in pairs, a pair of the high-speed signal terminals 20c is arranged between each ground terminal 20a and the adjacent power terminal 20b, and the high-speed signal terminals 20c are second-class terminals.

In addition, each of the first and second terminal groups 21 and 22 further includes a plurality of signal terminals located inside the pair of power terminals 20b, and the signal terminals are second-type terminals.

Specifically, in the present embodiment, the first terminal set 21 and the second terminal set 22 each have twelve conductive terminals, which are respectively, in sequence: a first ground terminal (Gnd)20a, a first pair of high-speed signal terminals (TX1+ -, differential signal terminals for transmitting high-speed signals) 20c, a first Power terminal (Power/VBUS)20b, a function detection terminal (CC1 for detecting the function of forward and reverse insertion and recognizing the function of CABLE), a pair of low-speed signal terminals (D + -, differential signal terminals for transmitting low-speed signals), an expansion terminal (SBU1, which can be defined for other purposes), a second Power terminal (Power/VBUS), a second pair of high-speed signal terminals (RX2+ -, differential signal terminals for transmitting high-speed signals), and a second ground terminal (Gnd), and signal terminals (function detection terminal, low-speed signal terminal and expansion terminal) between the two power supply terminals 20b can be set according to application requirements.

The latch member 3 is made of metal, in this embodiment, the latch member 3 has a pair of latch arms 31 located at two sides of the conductive terminal 2 in the transverse direction and a cross beam 32 extending in the transverse direction and connecting the latch arms 31, and further, the latch member 3 further has a pair of protrusions 33 extending forward from the front end of the cross beam 31, and the protrusions 33 are disposed at intervals in the transverse direction and extend forward into the slots formed in the upper and lower bodies 12 and 13. The locking member 3 is sandwiched between the upper terminal assembly and the lower terminal assembly in the height direction and has a pair of locking arms 31 on both sides thereof received in the corresponding slots 1171.

After the upper and lower terminal assemblies are assembled with each other and inserted into the base 11, the locking element 3 is inserted into the base 11 from the rear to the front, and at this time, the upper and lower bodies 12, 13 are sandwiched between the pair of locking arms 31 in the lateral direction.

The pair of slots 123 of the upper body 12 is communicated with the corresponding slots 133 of the lower body 13 to jointly receive the corresponding protrusions 33, and the positioning structure of the upper and lower bodies 12, 13 is located between the pair of protrusions 33 along the transverse direction. Specifically, in the present invention, the width of each of the convex portions 33 in the transverse direction ranges from 0.7 mm to 1.27 mm, so that the electrical connector 100 has good high-frequency performance. Each of the convex portions 33 has a length in the front-rear direction smaller than 1.5 times its width in the lateral direction.

In addition, in the transverse direction, the orthographic projection of a pair of adjacent high-speed signal terminals 20c in the first and second terminal groups 21 and 22 on the horizontal plane falls inside the orthographic projection of the corresponding convex part 33 on the horizontal plane, that is, the sum of the width of the pair of adjacent high-speed signal terminals 20c in each row of conductive terminals 2 and the width of the gap therebetween is not more than the width of each convex part 33; preferably, the width of the convex portion 33 is larger than the sum of the widths of the pair of high-speed signal terminals 20c and the gap therebetween, so that the convex portion 33 located between the first and second terminal sets 21 and 22 in the height direction can effectively shield the high-frequency interference between the high-speed signal terminals, thereby improving the high-frequency performance of the electrical connector 100.

Each of the latch arms 31 has a latch protrusion 311 and a protrusion 312 protruding toward the other latch arm 31, and the protrusion 312 is located between the latch protrusion 311 and the beam 32 in the front-back direction and abuts against the base 11 inward.

The cross beam 32 is sandwiched between the extension sections 122, 132 of the upper and lower bodies 12, 13 to be positioned in the receiving space 120, and a stop surface 1310 is formed between the combining sections 121, 131 and the extension sections 122, 132 to stop the cross beam 32 at the front side thereof.

The extension sections 122, 132 of the upper and lower bodies 12, 13 have receiving portions 1221, 1321 at the rear ends thereof, and the thickness of the receiving portions 1221, 1321 in the height direction is smaller than the thickness of the extension sections 122, 132 at the front sides thereof in the height direction.

The latch member 3 further has a solder foot 34 extending from the beam 32 to the rear surface of the housing 1 for soldering to a circuit board (not shown), so that the latch member 3 has a grounding effect. In other embodiments of the present invention, the electrical connector 100 may not have the locking element according to the requirement of the application environment.

The front end of the shielding shell 4 is provided with an oval butt joint frame port which is consistent with a butt joint frame port of a standard USB Type-C plug connector, and the butt joint frame port is used for being matched with the positive and negative insertion of the butt joint socket connector and has the advantage of convenience in use due to the fact that the positive and negative insertion is applicable.

The utility model discloses in, each metal shrapnel 5 have attached in the substrate 51 in the insulator 1 outside, certainly the rear end of substrate 51 turns over the interior of rolling over the extension forward and supports shell fragment 53 and extend backward with the butt cover shell body 4's outer support shell fragment 54, interior support shell fragment 53 towards the inside arch of grafting space 110 and go out, the rear end of outer butt shell fragment 54 is the free end, and its rear end has the orientation and is close to cover shell body 4's trend.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. The utility model provides an electric connector, its have insulator, be fixed in a plurality of conductive terminal in the insulator and cladding in the outer shielding shell of insulator, conductive terminal includes and is two rows of first terminal group and the second terminal group that set up along the direction of height, insulator includes the base, assembles extremely the last body and the lower body of base, first terminal group and second terminal group inlay respectively and are fixed in last body and lower body to form last terminal module and lower extreme subassembly, its characterized in that: the conductive terminals in the first and second terminal sets each include a first type of terminal having a first width in the transverse direction of the holding portion and a second type of terminal having a second width in the transverse direction of the holding portion, and the first width is greater than the second width.

2. The electrical connector of claim 1, wherein: the first terminal group and the second terminal group respectively comprise a pair of grounding terminals located on the outermost side and a pair of power terminals located on the inner side of the grounding terminals, and the grounding terminals are first-class terminals.

3. The electrical connector of claim 2, wherein: the first and second terminal sets each further include a high-speed signal terminal located between the ground terminal and an adjacent power supply terminal, and the high-speed signal terminal is a second-class terminal.

4. The electrical connector of claim 2, wherein: the power supply terminal is a first type terminal, and the first width is 1.2 to 1.4 times the second width.

5. The electrical connector of claim 4, wherein: the first and second terminal sets each further have a high-speed signal terminal located between the ground terminal and an adjacent power supply terminal, and the high-speed signal terminal is a second-class terminal.

6. The electrical connector of claim 1, wherein: the electric connector is also provided with a latch part assembled on the insulating body, the latch part is provided with a pair of latch arms positioned at two sides of the conductive terminal in the transverse direction and a cross beam extending along the transverse direction and connecting the latch arms, the latch part is also provided with a pair of convex parts extending forwards from the cross beam, and the convex parts are arranged at intervals along the transverse direction and extend forwards into the slots formed in the upper body and the lower body.

7. The electrical connector of claim 6, wherein: the upper body and the lower body are respectively provided with a combination section positioned on the front side and an extension section positioned on the rear side, the combination sections of the upper body and the lower body are stacked along the height direction, and the extension sections of the upper body and the lower body are arranged at intervals along the height direction to form an accommodating space between the extension sections and the lower body.

8. The electrical connector of claim 7, wherein: the upper body and the lower body are respectively provided with a pair of slots formed by forward sinking from the rear surface of the combining section, and the slots of the upper body and the corresponding slots of the lower body are aligned and communicated along the height direction so as to jointly accommodate the convex parts.

9. The electrical connector of claim 8, wherein: in the transverse direction, the orthographic projections of a pair of adjacent high-speed signal terminals in the first terminal group and the second terminal group on a horizontal plane fall into the orthographic projections of the corresponding convex parts on the horizontal plane.

10. The electrical connector of claim 9, wherein: the width of each of the projections in the transverse direction ranges from 0.7 mm to 1.27 mm.

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