Electrical connecting apparatus and contact

• US 7,377,788 B2
• Filed: 07/11/2006
• Issued: 05/27/2008
• Est. Priority Date: 01/16/2004
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Nihon Micronics
• Original Assignee: Kabushiki Kaisha Nihon Micronics
• Inventors: Hasegawa, Yoshiei
• Primary Examiner(s): Gilman; Alexander
• Application Number:
  US11/485,518
• Publication Number:
  US 20070096749A1
• Time in Patent Office: 686 Days
• Field of Search: 439/66, 439/862, 439 68- 72, 439/824, 439/91
• US Class Current: 439/66
• CPC Class Codes: G01R 1/06727 Cantilever beams
• CPC Class Codes: G01R 1/07342 the body of the probe being at an angle other than perpendicular to test object, e.g. probe card

Abstract

An electrical connecting apparatus comprises: a base plate provided with a first and a second mounting portion groups respectively having a plurality of first and second mounting portions arranged so as to be alternately positioned in a first direction; and a first and a second contact groups respectively having a plurality of first and second contacts individually mounted on the first and second mounting portions and in a cantilever state, the first and second contacts being displaced from each other in a second direction intersecting the first direction at the mounting positions on the base plate. This prevents any damage to adjacent mounting portions due to heat at the time of mounting the contacts, so that an arrangement pitch of the contacts can be made small.

Claims

1. An electrical connecting apparatus comprising:

a base plate with a first mounting portion group and a second mounting portion group respectively having a plurality of first mounting portions and a plurality of second mounting portions arranged to be alternately positioned in a first direction;

a first contact group and a second contact group respectively having a plurality of first contacts and a plurality of second contacts individually mounted on said first mounting portions and said second mounting portions in a cantilever state;

wherein each of said first and second contacts has a seat portion attached to said mounting portion and extending in a third direction intersecting both of said first direction and a second direction intersecting said first direction, an elastically deformable arm portion extending from said seat portion in a second direction, a tip portion extending from the front end portion of said arm portion toward the opposite side of said base plate, and a projected portion projecting from the front end of said tip portion toward the opposite end of said seat portion side;

wherein attached positions of said first and second contacts on said mounting portions are displaced from each other in said second direction; and

wherein the seat portions of said first and second contacts are respectively inclined toward the other side and the one side in said second direction relative to said base plate such that their tip portions are positioned on an imaginary straight line extending in parallel to said first direction.

2. An electrical connecting apparatus as claimed in claim 1, wherein each contact is a plate-like blade needle.

3. An electrical connecting apparatus as claimed in claim 1, wherein each mounting portion has a strip-like shape elongated in the second direction, and

wherein said base plate is further provided with a plurality of wirings individually connected to said mounting portions.

4. An electrical connecting apparatus as claimed in claim 1, wherein said first and second mounting portions are displaced from each other in the second direction.

5. An electrical connecting apparatus as claimed in claim 1, wherein said tip portion has a smaller thickness dimension than that of said seat portion and seat arm portion.

6. An electrical connecting apparatus as claimed in claim 1, wherein said seat portion is inclined toward either the one side or the other side in the width direction of said seat portion relative to said arm portion.

7. An electrical connecting apparatus as claimed in claim 1, wherein said base plate further includes third and fourth mounting portion groups respectively having a plurality of third mounting portions and a plurality of fourth mounting portions arranged to be alternately positioned in the first direction;

wherein said electrical connecting apparatus further comprises third and fourth contact groups having respectively a plurality of third contacts and a plurality of fourth contacts mounted individually on said third and fourth mounting portions in a cantilever state;

wherein each of said third and fourth contacts has a seat portion attached to said mounting portion and extending in said third direction, an elastically deformable arm portion extending from said seat portion in said second direction, a tip portion extending from the front end portion of said arm portion toward the opposite side of said base plate, and a projected portion projecting from the front end of said tip portion toward the opposite side of said seat portion side;

wherein attached portions of said third and fourth contacts on said mounting portions are displaced from each other in said second direction; and

wherein the seat portions of said third and fourth contacts are respectively inclined toward the other side and the one side in said second direction relative to said base plate such that their tip portions are positioned on an imaginary line extending in parallel to said first direction.

8. An electrical connecting apparatus as claimed in claim 7, wherein said arm portion has a slot penetrating said arm portion in the thickness direction of said seat portion and forming a pair of arms spaced apart in a direction intersecting said base plate.