Electrical contact and electric component socket

Patent metadata

Field	Value
Publication number	US-10770818-B2
Application number	US-201716339274-A
Country	US
Kind code	B2
Filing date	Nov 20, 2017
Priority date	Nov 21, 2016
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

An electrical contact and an electric component socket configured to be electrically connected to an electric component, wherein the electrical contact is capable of preventing a defect that a contacting portion of the electrical contact bites into a terminal of the electric component, leaving an indentation or giving rise to a state where burrs are liable to occur. An electrical contact has a contacting portion that comes in contact with a terminal of an electric component, the contacting portion includes a plurality of convex portions provided around a center in a tip portion of the contacting portion, the convex portions have flat portions on an outer circumferential side, and peak-shaped portions extending from the flat portions toward the center to come in contact with the terminal, and the contacting portion includes valley-shaped portions, each valley-shaped portion being formed between the respective convex portions in the plurality of convex portions.

First claim

The invention claimed is:

1. An electrical contact comprising:
a contacting portion including convex portions provided around a center of a tip portion of the contacting portion, wherein
each of the convex portions has a flat portion on an outer circumferential side and formed by a plane that is perpendicular to an axial line of the electrical contact, and a peak-shaped portion extending from the flat portion toward the center so as to be contactable with a terminal of an electric component, and
the contacting portion has valley-shaped portions, each valley-shaped portion being formed between adjacent convex portions of the convex portions.

2. The electrical contact according to claim 1 , wherein the valley-shaped portions comprise a combination of the valley-shaped portions having different valley depths.

3. The electrical contact according to claim 2 , wherein each valley-shaped portion comprises a valley bottom portion, and at least a part of the valley bottom portion has a flat strip shape.

4. The electrical contact according to claim 2 , wherein the valley-shaped portions comprise a combination of valley-shaped portions that each include a valley bottom portion having a flat shape and valley-shaped portions that each include a valley bottom portion having a V-shape.

5. The electrical contact according to claim 1 , further comprising an outer wall portion that surrounds an outer circumferential side of each of the valley-shaped portions.

6. An electric component socket comprising:
a socket main body positionable on a wiring substrate and having a storage portion in which an electric component having terminals is storable, and
the electrical contact according to claim 1 disposed in the socket main body to, with the socket main body positioned on the wiring substrate and the electric component having terminals stored in the storage portion, come in contact with each of the terminals.

7. The electrical contact according to claim 2 , further comprising an outer wall portion that surrounds an outer circumferential side of each of the valley-shaped portions.

8. The electrical contact according to claim 3 , further comprising an outer wall portion that surrounds an outer circumferential side of each of the valley-shaped portions.

9. The electrical contact according to claim 4 , further comprising an outer wall portion that surrounds an outer circumferential side of each of the valley-shaped portions.

10. An electric component socket comprising:
a socket main body positionable on a wiring substrate and having a storage portion in which an electric component having terminals is storable, and
the electrical contact according to claim 2 disposed in the socket main body to, with the socket main body positioned on the wiring substrate and the electric component having terminals stored in the storage portion, come in contact with each of the terminals.

11. An electrical contact comprising:
a contacting portion including convex portions provided around a center of a tip portion of the contacting portion, wherein
each of the convex portions has a flat portion on an outer circumferential side, and a peak-shaped portion extending from the flat portion toward the center so as to be contactable with a terminal of an electric component,
the contacting portion has valley-shaped portions, each valley-shaped portion being formed between adjacent convex portions of the convex portions, and
the valley-shaped portions comprise a combination of the valley-shaped portions having different valley depths.

12. An electric component socket comprising:
a socket main body positionable on a wiring substrate and having a storage portion in which an electric component having terminals is storable, and
the electrical contact according to claim 11 disposed in the socket main body to, with the socket main body positioned on the wiring substrate and the electric component stored in the storage portion, come in contact with each of the terminals.

Assignees

• Enplas Corp

Inventors

• ISAGODA Satoru
• Kanesashi Hokuto
• Miura Akira

Classifications

• G01R31/2893

  Handling, conveying or loading, e.g. belts, boats, vacuum fingers (G01R31/2867 takes precedence; handling semiconductor devices or wafers during manufacture or treatment H10P72/00) · CPC title

• G01R31/2886

  Features relating to contacting the IC under test, e.g. probe heads; chucks (G01R31/2865 takes precedence, test connections, e.g. test sockets, or probes per se, G01R1/04 or G01R1/06) · CPC title

• G01R1/06738 Primary

  related to tip portion · CPC title

• G01R1/0483

  Sockets for unleaded IC's having matrix type contact fields, e.g. BGA or PGA devices; Sockets for unpackaged, naked chips · CPC title

• G01R1/0441

  Details · CPC title