CN107039807B

CN107039807B - Electric connector

Info

Publication number: CN107039807B
Application number: CN201710021917.3A
Authority: CN
Inventors: 彭易平
Original assignee: Smart Chip Microelectronic Co ltd
Current assignee: Smart Chip Microelectronic Co ltd
Priority date: 2017-01-12
Filing date: 2017-01-12
Publication date: 2023-03-14
Anticipated expiration: 2037-01-12
Also published as: CN116231359A; CN107039807A

Abstract

The invention provides an electric connector, which comprises an insulating body, a plurality of conductive terminals fixed in the insulating body, a locking piece and a shielding shell coated outside the insulating body, wherein the insulating body is provided with an accommodating space for inserting a butt-joint socket connector, a plurality of terminal grooves arranged in a penetrating manner along the front-back direction and a mounting part positioned at the rear end of the terminal grooves, the terminal grooves are arranged side by side along the transverse direction of the electric 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 conductive terminals are assembled into the terminal grooves from back to front and are provided with welding parts which are exposed out of the mounting part and arranged in two rows, the mounting part of the insulating body is provided with a plurality of barriers arranged along the height direction, the barriers separate adjacent welding parts from each other, and the welding parts are flat plate-shaped structures arranged horizontally and are electrically connected with a cable. The electric connector can save a built-in circuit board structure, not only saves the cost, but also can simplify the process.

Description

Electric connector

Technical Field

The invention relates to the technical field of connectors, in particular to an electric connector capable of being plugged positively and negatively.

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 shorter, which requires the size of the components of the electronic products to be smaller, and the connector industry is the first place to take the lead.

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.

In the conventional USB Type-C plug connector, two terminal assemblies are formed on conductive terminals in an injection molding manner, and then the two terminal assemblies and a front body are assembled into a whole, so that tolerance accumulation can be caused; the conductive terminals of other plug connectors are assembled into a single-piece insulating body, but the tail parts of the conductive terminals need to be connected with a cable through the switching of an internal circuit board; meanwhile, a central latch is usually disposed between the two rows of terminals, and the latch usually has a main body and a pair of latch arms extending forward from two sides of the main body, which is not desirable in terms of cost and assembly.

Accordingly, there is a need for an improved electrical connector that overcomes the above-mentioned problems.

Disclosure of Invention

The present invention is directed to an improved electrical connector having conductive terminals and a locking member.

In order to achieve the above-mentioned object, the present invention provides an electrical connector, which comprises an insulating body, a plurality of conductive terminals fixed in the insulating body, a locking member and a shielding shell covering the insulating body, wherein the insulating body has an accommodating space for inserting an opposite plug-in connector, a plurality of terminal slots arranged in a front-back direction in a penetrating manner, and a mounting part at the rear end of the terminal slots, the terminal slots are arranged side by side along the transverse direction of the electrical connector, the conductive terminals comprise a first terminal group and a second terminal group arranged in two rows along the height direction, the conductive terminals are assembled into the corresponding terminal slots of the insulating body from back to front and have welding parts which are exposed in the mounting part and arranged in two rows, the mounting part of the insulating body has a plurality of separation columns arranged along the height direction, the partition separates adjacent welding parts from each other, the welding parts are of flat-plate-shaped structures arranged horizontally and are electrically connected with cables, the first terminal group and the second terminal group are respectively provided with a pair of grounding terminals and a pair of power terminals, the pair of power terminals in the first terminal group and the pair of power terminals in the second terminal group are integrally connected to form an integrated power terminal, the integrated power terminal comprises a pair of plate body parts which are vertically arranged, contact arms which respectively extend forwards from each plate body part and a tail part which is located at the rear end of each plate body part and connects the plate body parts, the tail part comprises two welding parts located at different heights and a connecting part located between the two welding parts along the transverse direction, and the connecting part is connected with two ends, close to the two welding parts.

As a further improvement of the present invention, each of the plate portions extends forward to form a pair of the contact arms spaced apart in the height direction, and the pair of the contact arms are oppositely disposed to serve as the contact arms of the corresponding power terminals in the first and second terminal sets, respectively.

As a further improvement of the present invention, the connecting portion is Z-shaped and includes a pair of vertical portions connected to the corresponding welding portions, respectively, and a horizontal portion located between the pair of vertical portions to connect the pair of vertical portions.

As a further improvement of the present invention, the pair of plate portions are provided at intervals in the lateral direction, and the top surfaces and/or the bottom surfaces thereof are provided with interference portions projecting outward in the height direction.

As a further improvement of the present invention, a pair of ground terminals in the first terminal group is integrally connected with corresponding ground terminals in the second terminal group to form a conjoined ground terminal, and the two terminal groups have two conjoined ground terminals located at two sides thereof.

As a further improvement of the present invention, the locking members are a pair of locking members which are independently arranged, the two sides of the insulating body are respectively provided with a retaining groove extending along the front-rear direction, the retaining groove is recessed forward from the rear end surface of the mounting portion to be communicated with the accommodating space, and the locking members are assembled into the corresponding retaining grooves from the back to the front and are positioned between the first terminal set and the second terminal set along the height direction.

As a further improvement of the present invention, the locking member is mechanically and electrically connected to the shielding shell.

The invention has the beneficial effects that: the conductive terminal of the electric connector and a pair of locking parts which are independently arranged are assembled into the insulating body from back to front, and the conductive terminal is provided with the welding part which is horizontally arranged and has a flat structure so as to be connected with a cable, so that a built-in circuit board structure is omitted, the cost is saved, and the process can be simplified; meanwhile, the power terminals of the electric connector are connected into a whole to form the connected power terminal, so that the structure is simple and the assembly is convenient.

Drawings

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

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

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

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

FIG. 5 is a schematic diagram of the connection between the conductive terminals and the resistive element of the electrical connector shown in FIG. 3;

FIG. 6 is a view from another perspective of the conductive terminals and the resistive element of the electrical connector shown in FIG. 5;

FIG. 7 is a perspective assembled view of the electrical connector of FIG. 1 with the resistive element removed;

fig. 8 is a perspective view of the electrical connector of fig. 7 with the shutter housing removed;

FIG. 9 is a cross-sectional schematic view of the electrical connector of FIG. 7;

FIG. 10 is a schematic plan view of the conductive terminals and the resistive element of the electrical connector shown in FIG. 5;

fig. 11 is a perspective view of the integral power terminal of the electrical connector shown in fig. 3.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes in accordance with the embodiments are within the scope of the present invention.

Referring to fig. 1 to 11, which are preferred embodiments of the electrical connector 100 of the present invention, the electrical connector 100 includes an insulating body 1, a plurality of conductive terminals 2 fixed in the insulating body 1, a locking member 3, a shielding shell 4 covering the insulating body 1, and a resistor element 5 electrically connected to the corresponding conductive terminals 2.

Referring to fig. 1 to 4 in combination with fig. 7 to 9, the insulation body 1 has a main body 11, a butt-joint portion 12 disposed in front of the main body 11, and a mounting portion 13 located behind the main body 11 and protruding outward, wherein the main body 11 and the butt-joint portion 12 are disposed in an oval column shape as a whole, and a receiving space 120 opened forward is formed inside the butt-joint portion 12 for inserting the docking connector forward or backward. The insulating body 1 is provided with a plurality of terminal slots 10 running through along the front-back direction, and the terminal slots 10 are arranged side by side along the transverse direction of the electric connector 100.

Each terminal groove 10 extends forward from the rear end face of the insulation body 1, a part of the terminal grooves 10 extends forward to the inside of the docking portion 12 and communicates with the receiving space 120, and the remaining part of the terminal grooves 10 extends forward to the inside of the main portion 11 and does not extend to the inside of the docking portion 12, that is, the remaining part of the terminal grooves 10 are enclosed inside the main portion 11 and do not communicate with the receiving space 120.

The two sides of the insulating body 1 are respectively provided with a pair of holding grooves 14 extending along the front-back direction, and a pair of the holding grooves 14 are symmetrically arranged at the two side portions of the insulating body 1, and are respectively recessed forward from the rear end surface of the mounting portion 13 to the inside of the butting portion 12 and communicated with the accommodating space 120.

Referring to fig. 3 to 11, the conductive terminals 2 include a first terminal set 21 and a second terminal set 22 arranged in two rows along a height direction, and the first terminal set 21 and the second terminal set 22 are arranged in opposite directions and correspond to each other. The positions of the mating portions of the first terminal set 21 and the second terminal set 22 on the insulative housing 1 are the same as the positions of the mating portions of the corresponding terminals on the standard USB Type-C plug connector.

Each of the first terminal group 21 and the second terminal group 22 is provided with a pair of ground terminals 23 and a pair of power terminals 24, the pair of ground terminals 23 are respectively located on both sides of the first terminal group 21 or the second terminal group 22, and the power terminals 24 are located inside the adjacent ground terminals 23.

The pair of ground terminals 23 in the first terminal group 21 are respectively connected with the corresponding ground terminals 23 in the second terminal group 22 to form a connected ground terminal, and the two

terminal groups

21 and 22 have two connected ground terminals located at both sides thereof. Specifically, each of the integrated ground terminals has a pair of elastic contact arms 231 oppositely disposed along the height direction and protruding into the receiving space 120, a holding portion 232 fixed in the terminal slot 10 of the insulating body, and a tail portion 233 extending backward from the holding portion 232 and protruding out of the mounting portion 13 of the insulating body 1. The holding portion 232 is vertically disposed behind the pair of contact arms 231 and integrally connected to the pair of contact arms 231, and the pair of contact arms 231 and the holding portion 232 of each of the integrated ground terminals are in a two-to-one correspondence relationship and connected to form a tuning fork structure with a forward opening. The tail 233 is L-shaped, and has a vertical portion 2331 connected to the holding portion 232 and a welding portion 2332 horizontally disposed and electrically connected to a cable (not shown). The soldering portions 2332 of the two connected ground terminals located on both sides extend in opposite directions, and further, the soldering portions 2332 of the two connected ground terminals extend in opposite directions and are located on different horizontal planes.

The pair of contact arms 231 protrudes downward or upward into the receiving space 120 to form the contact arms 231 of two corresponding conductive terminals in the upper and lower rows, and the corresponding conductive terminals in the upper and lower rows share a holding portion 232 and a tail portion 233. Each of the contact arms 231 has a butting portion 2311 at a free end thereof, and the butting portion 2311 of one of the pair of contact arms 231 protrudes toward the other contact arm 231. In the height direction of the electrical connector 100, the holding portion 232 of the one-piece ground terminal protrudes upward and/or downward to form an interference portion 2321 to be in interference fit with the top and bottom surfaces of the corresponding terminal slot 10.

The pair of power terminals 24 in the first terminal group 21 and the pair of power terminals 24 in the second terminal group 22 are integrally connected to form a one-piece power terminal, and specifically, the one-piece power terminal includes a pair of plate portions 241 vertically disposed, elastic contact arms 242 respectively extending forward from each plate portion 241, and a tail portion 243 located at a rear end thereof and connecting the pair of plate portions 241. The pair of plate portions 241 are provided at intervals in the lateral direction, and the top surface and/or the bottom surface thereof is provided with an interference portion 2411 protruding outward in the height direction. Each of the plate portions 241 extends forward to form a pair of contact arms 242 spaced apart in the height direction, and the pair of contact arms 242 are disposed oppositely to serve as contact arms of corresponding power supply terminals in the first and

second terminal sets

21 and 22, respectively. The tail portion 243 is in a continuous step shape and protrudes from two sides of the mounting portion 13 of the insulating body 1, and includes two welding portions 2431 located at different heights and a connecting portion 2432 located between the two welding portions 2431 along a transverse direction, the welding portions 2431 are horizontally arranged, and the connecting portion 2432 is connected to two ends of the two welding portions 2431 close to each other. The connecting portion 2432 has a Z-shape, and includes a pair of vertical portions 2433 respectively connected to the corresponding welding portions 2431 and a horizontal portion 2434 between the pair of vertical portions 2433 to connect the pair of vertical portions 2433.

The shape and structure of the contact arm 242 of the integrated power terminal are the same as those of the contact arm of the integrated power terminal, and are not described herein again. In this embodiment, some of the conductive terminals in the first terminal set 21 and the corresponding conductive terminals (the grounding terminal 23 and the power terminal 24) in the second terminal set 22 are integrally connected to form a conjoined terminal, and during assembly, the conductive terminals in the first and

second terminal sets

21 and 22 can be assembled into the insulating body 1 at the same time, which brings great convenience to assembly.

At least one of the first terminal set 21 and the second terminal set 22 further has a detection terminal 25 (CC 1 for detecting the function of forward/reverse insertion and recognizing the function of CABLE) and a pair of signal terminals 26 located inside the power terminal 24. The other of the first and

second terminal sets

21, 22 may also be provided with corresponding conductive terminals on a standard USB Type-C plug connector as desired for use.

In the present embodiment, the first terminal set 21 is provided with the detecting terminal 25 and a pair of signal terminals 26, the detecting terminal 25 has an elastic contact arm 251 protruding into the receiving space 120, a holding portion 252 fixed in the terminal slot 10 of the insulating body, and a tail portion 253 extending backward from the holding portion 252 and protruding out of the mounting portion 13 of the insulating body 1. The tail 253 is L-shaped and has a welding portion 2531 disposed horizontally, specifically, the tail 253 extends from the rear end of the holding portion 252 toward the second terminal set 22 and is bent to horizontally dispose the welding portion 2531 thereof, and the welding portion 2531 extends in a direction away from the adjacent power terminal. The soldering portion 2531 is located at the same height as the soldering portion of the conductive terminals (the ground terminal 23 and the power terminal 24) in the second terminal group 22.

The signal terminals 26 have substantially the same shape and structure, and each have an elastic contact arm 261 protruding into the receiving space 120, a holding portion 262 fixed in the terminal slot 10 of the insulating body, and a tail portion 263 extending backward from the holding portion 262 and protruding out of the mounting portion 13 of the insulating body 1, wherein the tail portion 263 is L-shaped and has a welding portion 2631 arranged horizontally. The two soldering portions 2631 of the pair of signal terminals 26 extend in opposite directions.

Referring to fig. 4 to 6 and 8, the soldering portions of the conductive terminals 2 are divided into two rows arranged along the height direction and are respectively arranged on two sides of the mounting portion 13 of the insulating body 1, and further, the soldering portion 2332 of the ground terminal 23 on one side, the two soldering portions 2631 of the pair of signal terminals 26 and one soldering portion 2431 of the conjoined power terminal are flush with each other and located at a first height; the soldering portion 2332 of the grounding terminal 23, the soldering portion 2531 of the detection terminal 25 and the other soldering portion 2431 of the integrated power terminal are flush and located at a second height. The horizontal portion 2434 is located between the soldering portion 2631 of the signal terminal 26 and the soldering portion 2531 of the detection terminal 25 in the height direction.

The mounting portion 13 of the insulating body 1 has a plurality of spacers 131 arranged along the height direction, the spacers 131 separate the

adjacent soldering portions

2332, 2431, 2531 and 2631 from each other, and the

soldering portions

2332, 2431, 2531 and 2631 are all flat plate-shaped structures arranged horizontally, so as to realize the electrical connection with the cable, thereby eliminating a built-in circuit board in the conventional structure, and saving the cost, time and labor. Meanwhile, the soldering portion 2531 of the detection terminal 25 is mechanically and electrically connected to the

soldering portions

2332 and 2431 on the same side as the grounding terminal 23 or the power terminal 24 through the resistor element 5, and when the soldering portion 2531 of the detection terminal 25 is connected to the grounding terminal 23 or the power terminal 24, the resistance of the resistor element 25 is adjusted as required.

The conductive terminal 2 is assembled into the corresponding terminal slot 10 of the insulating body 1 from the back to the front, and the

contact arms

231, 242, 251, 261 are exposed in the receiving space 120 to contact with the mating connector. Since the

soldering portions

2332, 2431, 2531 and 2631 of the conductive terminal 2 are all flat plate-shaped structures which are horizontally arranged, the conductive terminal can be directly soldered with a cable without using a built-in circuit board for switching.

The locking parts 3 are made of metal materials, and a pair of the locking parts 3 are arranged independently and oppositely on two sides of the conductive terminal 2 in the transverse direction. Each of the locking elements 3 has a base 31, a locking arm 32 at its front end, and a projection 33 formed to project from the inner side surface of the base 31 toward the other locking element 3. When the locking member 3 is assembled into the insulative housing 1, the locking member 3 is assembled into the retention slots 14 at two sides of the insulative housing 1 from the back to the front, and is located between the first and second terminal sets 21 and 22 along the height direction. The latch arm 32 extends forward from the front end of the base 31 into the receiving space 120, and is latched and fixed with the mating connector in the receiving space 120, and the protrusion 33 is abutted and matched with the inside of the insulating body 1. The rear portion of the base 31 is mechanically and electrically connected to the shielding shell 4, and in this embodiment, the rear portion of the base 31 is welded to the inner side of the shielding shell 4.

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 is used for butt-joint positive and negative insertion matching of a socket connector, and the front and negative insertion connector has the advantage of convenience in use due to the fact that both the positive and negative insertion are suitable. The shielding shell 4 is sleeved outside the insulating body 1 from front to back and is connected with the pair of locking pieces 3.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical 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 insulator, is fixed in a plurality of conductive terminal, snap close piece and cladding in the insulator in vitro shield the casing, insulator has can supply to dock connector male accommodating space, runs through a plurality of terminal grooves that set up and be located the installation department of its rear end along the fore-and-aft direction, the terminal groove sets up side by side along electric connector's transverse direction, conductive terminal includes and is two rows of first terminal group and the second terminal group that set up along the direction of height, its characterized in that: the conductive terminals are assembled into corresponding terminal grooves of the insulating body from back to front and are provided with welding parts which are exposed out of the installation part and are arranged in two rows, the installation part of the insulating body is provided with a plurality of barriers arranged along the height direction, the barriers separate the adjacent welding parts from each other, the welding parts are of a flat plate structure arranged horizontally and are electrically connected with cables, the first terminal group and the second terminal group are respectively provided with a pair of grounding terminals and a pair of power terminals, the pair of power terminals in the first terminal group and the pair of power terminals in the second terminal group are integrally connected to form a connected power terminal, the connected power terminal comprises a pair of plate parts which are vertically arranged, contact arms which respectively extend forwards from each plate part and a tail part which is positioned at the rear end of the plate part and connects the pair of plate parts, the tail part comprises two welding parts which are positioned at different heights and a connecting part which is positioned between the two welding parts along the transverse direction, and the connecting part is connected with two ends, which are close to the two welding parts.

2. The electrical connector of claim 1, wherein: each plate body part extends forwards to form a pair of contact arms arranged at intervals along the height direction, and the pair of contact arms are oppositely arranged to be respectively used as the contact arms of the corresponding power terminals in the first terminal group and the second terminal group.

3. The electrical connector of claim 1, wherein: the connecting portion is Z-shaped and includes a pair of vertical portions connected to the corresponding welding portions, and a horizontal portion located between the pair of vertical portions to connect the pair of vertical portions.

4. The electrical connector of claim 1, wherein: the pair of plate body portions are arranged at intervals in the transverse direction, and the top surfaces and/or the bottom surfaces thereof are provided with interference portions protruding outward in the height direction.

5. The electrical connector of claim 1, wherein: and the two terminal groups are provided with two conjoined grounding terminals positioned at two sides of the two terminal groups.

6. The electrical connector of any one of claims 1-5, wherein: the lock catch pieces are a pair of lock catch pieces which are arranged independently, the two sides of the insulating body are respectively provided with a fixing groove which extends along the front-back direction, the fixing grooves are recessed forwards from the rear end surface of the mounting part to be communicated with the accommodating space, and the lock catch pieces are assembled into the corresponding fixing grooves from back to front and are positioned between the first terminal group and the second terminal group along the height direction.

7. The electrical connector of claim 6, wherein: the locking fastener is mechanically and electrically connected with the shielding shell.