Terminal and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10424858-B2
Application number	US-201816225150-A
Country	US
Kind code	B2
Filing date	Dec 19, 2018
Priority date	Nov 6, 2017
Publication date	Sep 24, 2019
Grant date	Sep 24, 2019

Abstract

A terminal and a manufacturing method thereof includes: S 1 : providing a metal plate sheet, and punching the metal plate sheet to form a through slot thereon, such that the metal plate sheet forms two branches on two opposite sides of the through slot; S 2 : cutting one end of each of the two branches, such that the ends of the two branches are separated from each other to form two contact portions respectively, and a first distance is initially provided between the two contact portions; and S 3 : extruding at least one of the two branches, such that the extruded branch plastically deform to increase the first distance between the two contact portions to become a second distance, preventing the two contact portions of the terminal from contacting each other and moving altogether in the process where the terminal is pressed by the chip module and elastically deforms.

First claim

What is claimed is:

1. A terminal, configured to be electrically connected to a chip module, comprising:
a base;
an elastic arm, formed by bending and extending upward from one end of the base, the elastic arm having a through slot, two branches and two contact portions, wherein the through slot penetrates through the elastic arm, the elastic arm forms the two branches on two opposite sides of the through slot, each of the two contact portions is formed at an end of one of the two branches, the two contact portions abut a same pad of the chip module, and each of the branches defines a center line along an extending direction thereof;
a bending portion, formed by bending and extending downward from an opposite end of the base, wherein a through hole penetrates through the base and the bending portion, and the through hole has an upper edge in the base;
a conducting portion, formed by bending and extending from the bending portion, wherein the conducting portion is configured to be conducted to a circuit board; and
two extrusion portions, respectively provided on the two branches, wherein each of the two branches is provided with one of the two extrusion portions, a distance between outer edges of the two extrusion portions is smaller than or equal to a length of the upper edge of the through hole, each of the extrusion portions is located between the two center lines, each of the extrusion portions is a concave structure formed by a punching equipment applying a force correspondingly onto the branches, such that the branches correspondingly plastically deform, and deformations of each of the branches at two sides of the center line thereof are different from each other, thereby increasing a distance between the two contact portions.

2. The terminal of claim 1 , wherein the two extrusion portions are symmetrically provided about a center line of the through slot.

3. The terminal of claim 1 , wherein each of the two branches has two plate surfaces provided opposite to each other and an inner edge and an outer edge connecting the two plate surfaces, the through slot is formed between the inner edges of the two branches, each of the extrusion portions is concavely formed on one of the two plate surfaces of the corresponding one of the branches toward the other one of the two plate surfaces, and each of the extrusion portions does not penetrate the other one of the two plate surfaces.

4. The terminal of claim 3 , wherein each of the contact portions has an abutting surface abutting the chip module, and the abutting surface and each of the extrusion portions are located on a same plate surface of the corresponding one of the branches.

5. The terminal of claim 1 , wherein each of the extrusion portions is located on the elastic arm at a location adjacent to the base.

6. The terminal of claim 1 , wherein the distance between the two contact portions is smaller than a width of the through slot.

7. The terminal of claim 1 , wherein each of the branches has an inner edge and an outer edge opposite to each other, the inner edge is adjacent to the through slot, and each of the contact portions is formed by flipping upward of the inner edge at the end of each of the branches.

8. The terminal of claim 1 , wherein an upper surface of each of the contact portions tilts downward to form a chamfer, such that a contact area between each of the contact portions and the chip module is decreased.

9. The terminal of claim 1 , wherein the distance between the two contact portions is greater than zero and smaller than or equal to 0.12 mm.

10. The terminal of claim 1 , wherein the two branches break from each other at an end of the elastic arm without blanking.

Assignees

• Lotes Co Ltd

Inventors

• Ju Ted
• Jin Zuo Feng

Classifications

• H01R12/718

  Contact members provided on the PCB without an insulating housing (contacts for abutting H01R12/714) · CPC title

• H01R13/2457 Primary

  consisting of at least two resilient arms contacting the same counterpart · CPC title

• H01R13/2492

  multiple contact points · CPC title

• H01R12/716

  Coupling device provided on the PCB · CPC title

• H01R43/16 Primary

  for manufacturing contact members, e.g. by punching and by bending · CPC title