US-12628316-B2 - Electrical connector having bending extension part at terminals

Abstract

An electric connector includes a casing, a plurality of ground terminals, a first connection portion, a plurality of electrical terminals and a second connection portion. The casing has an accommodating space. The plurality of ground terminals and the plurality of electrical terminals are arranged in the accommodating space. The first connection portion connects to the plurality of ground terminals and is bent and extended to form a first extension part. The second connection portion connects to the plurality of electrical terminals and extends a second extension part. One of the first extension part and the second extension part is a plate structure with bent steps.

Inventors

• Jing-Xian Shi
• Nien-Wei Tung

Assignees

• DELTA ELECTRONICS, INC.

Dates

Publication Date

20260512

Application Date

20230908

Priority Date

20230614

Claims (9)

1. 1 . An electric connector, comprising: a casing having an accommodating space; a plurality of ground terminals arranging in the accommodating space; a first connection portion connecting to the plurality of ground terminals and being bent and extended to form a first extension part; a plurality of electrical terminals arranging in the accommodating space; and a second connection portion connecting to the plurality of electrical terminals and extending a second extension part; wherein the first extension part has a first vertical projection, the second extension part has a second vertical projection, the first vertical projection partially overlaps with the second vertical projection and defines an overlapping projection length, and one of the first extension part and the second extension part is a plate structure with bent steps.
2. 2 . The electric connector according to claim 1 , wherein each the ground terminal and each the electrical terminal have free ends and rear ends, the first connection portion couples with the rear ends of the plurality of ground terminals, and the second connection portion couples with the rear ends of the plurality of electrical terminals.
3. 3 . The electric connector according to claim 1 , wherein a width of the plate structure with bent steps is greater than ½ of width of the casing.
4. 4 . The electric connector according to claim 1 , wherein the length of the overlapping projection length is between ¼ and ⅔ of width of the casing.
5. 5 . The electric connector according to claim 1 , wherein a distance is defined between the first extension part or the second extension part and a top surface of the casing.
6. 6 . The electric connector according to claim 1 , wherein a height difference is defined between the first extension part and the second extension part.
7. 7 . The electric connector according to claim 1 , wherein one of the first extension part and the second extension part is the plate structure with bent steps, and the other second extension part or the first extension part comprises a first plate and a second plate.
8. 8 . The electric connector according to claim 7 , wherein one of the first extension part and the second extension part is the plate structure with bent steps and comprises a third plate.
9. 9 . The electric connector according to claim 1 , wherein one of the first extension part and the second extension part is an L-shaped plate structure.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to China Patent Application No. 202310704385.9, filed on Jun. 14, 2023. The entire contents of the above-mentioned application are incorporated herein by reference for all purposes. FIELD OF THE INVENTION The present disclosure relates to an electric connector, and more particularly to an electric connector having bending extension part at the rear end of terminals to enhance heat dissipation. BACKGROUND OF THE INVENTION Electric connectors are widely used in electronic equipment in newly days as an interface for power and signal transmission. However, with rapid development of technology, in order to respond to different kinds, types, or brands of electronic equipment, electric connectors of various types and specifications are flourished. For example, the most commonly used connection interface by public is the Universal Serial Bus (USB) connector assembly. Users can plug some peripheral devices with USB male plugs, such as mice, external hard disks, mobile power supplies, etc., into the electronic devices with USB female sockets, so as to achieve electrical connection between the peripheral devices and the electronic device to transmit power and signals, and the peripheral devices can play various functions respectively. With the increase demand in transmission amounts, transmission rate, and performance requirements, the high-speed TYPE-C specification electric connector assembly of USB is introduced. The USB TYPE-C electric connector assembly has smaller size than the traditional USB interfaces, but can support higher power charging and power supply capability, and faster in transmission speed. In addition, it can support front and back plugging, so that users no longer need to distinguish the front and back side, and it is more suitable for using in modern electronic devices that pursue thinness and lightness. Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic exploded view perspective view illustrating a male electric connector of the prior art. FIG. 1B is a schematic exploded view perspective view illustrating a ground terminal assembly and an electrical terminal assembly of the prior art male electric connector of FIG. 1A. As shown in FIG. 1A, the prior art male electric connector 1 includes a casing 10, a ground terminal assembly 11 and an electrical terminal assembly 12, wherein the casing 10 has an accommodating space 100, and the ground terminal assembly 11 and the electrical terminal assembly 12 are arranged in the accommodating space 100 of the casing 10. As shown in FIG. 1B, the ground terminal assembly 11 has a free end 11a and a rear end 11b, the free end 11a is for coupling with a corresponding contact terminal (not shown), and the rear end 11b is disposed on the opposite end of the free end 11a. In the prior art, the rear end usually has an extension part 11c for welding, so its area is usually slightly smaller. Similarly, the electrical terminal assembly 12 also has a free end 12a and a rear end 12b, and the rear end 12b also has an extension part 12c for welding, and its area is also smaller. Consequently, in the prior art, the ground terminal assembly 11 and the electrical terminal assembly 12 of the conventional male electrical connector 1 cannot effectively use the space at the rear ends 11b, 12b. Moreover, due to the small areas of the extension parts 11c, 12c, the heat dissipation area is limited, and the temperature rise during charging cannot be effectively reduced, result in difficult to increase the rated current value. Therefore, there is a need of providing an electric connector to obviate the drawbacks encountered from the prior arts. SUMMARY OF THE INVENTION It is an object of the present disclosure to provide an electric connector, especially a USB TYPE-C electric connector assembly for charging. The electric connector includes a casing, a plurality of ground terminals, a first connection portion, a plurality of electrical terminals and a second connection portion, wherein the first connection portion connects to the plurality of ground terminals and is bent and extended to form a first extension part, and the second connection portion connects to the plurality of electrical terminals and extends a second extension part. One of the first extension part and the second extension part is a plate structure with bent steps. By the enlarge area and the arrangement of the plate structure with bent steps of the first extension part and the second extension part, the heat conduction area is enlarged, so as to increase the heat dissipation area, reduce the temperature rise during charging and increase the rated current value, and the charging current value and charging performance can be improved. It is another object of the present disclosure to provide an electric connector, especially a USB TYPE-C electric connector for charging. The electric connector includes a casing, a plurality of ground termin