Static-free interrogating connector for electric components

• US 4,954,087 A
• Filed: 03/02/1990
• Issued: 09/04/1990
• Est. Priority Date: 04/27/1988
• Status: Expired due to Term

• Current Assignee: i STAT Corporation (Abbott Laboratories)
• Original Assignee: i STAT Corporation (Abbott Laboratories)
• Inventors: Zelin, Michael P., Lauks, Imants R.
• Primary Examiner(s): Bradley, Paula A.
• Application Number:
  US07/489,844
• Time in Patent Office: 186 Days
• Field of Search: 174/51, 200/51.1, 361/412, 361/413, 439/70-72, 439/76, 439/92, 439/93, 439/95, 439/188, 439/260, 439/264, 439/620
• US Class Current: 439/71
• CPC Class Codes: G01R 1/07357 with flexible bodies, e.g. buckling beams
• CPC Class Codes: H01R 13/2442 with a single cantilevered beam
• CPC Class Codes: H01R 13/70 with built-in switch
• CPC Class Codes: H01R 31/08 Short-circuiting members for bridging contacts in a counterpart

Abstract

An improved connector for connection to and identification and testing of electric components such as integrated circuits is described which features a number of spring biased contact elements normally in contacting relation with a shorting bar. When a particular component is placed in a specified physical relation to the connector, a combination of exposed electrical contacts and nonconductive elements on the component to be tested displace specified ones of the contact members away from the shorting bars, providing a connection pattern which can be detected. At the same time, test signals can be applied to the electric component to be tested. The circuit may be identified and its specific parameters identified and characterized in a single operation according to the invention. Advantageously, the shorting bar is grounded so that any static charge on the component to be tested is grounded before the contact elements are displaced from the shorting bar.

Claims

1. A connector for contacting an electric component comprising:

a housing including means for locating said component in a specified physical relationship to said housing;

a plurality of contact members carried by and biased with respect to said housing so as to be urged into physical contact with a predetermined electric component in said specified physical relationship to said housing;

conductor means located such that at least some of said biased contact members are urged into electrically conductive relation with said conductor means when no electric component is in said specified physical relationship to said housing, and such that selected contact members are displaced out of their electrically conductive relation to said conductor means when an electric component is in said specified physical relationship to said housing, different combinations of said contact members being displaced by different electric components; and

means connected to said contact members for determining the combination of displacements of said contact members when an electric component is in said specified physical relationship to said housing, and for identifying the component responsive thereto.

2. The connector of claim 1, wherein when an electric component is in said specified physical relationship to said housing at least some of the contact members are in electrically conductive relation to contact elements on said component, and wherein said at least some of the contact members are identified by said means for determining.

3. The connector of claim 2, wherein said means for identifying comprises means for comparing a combination of signals detected with respect to said contact members to stored data representing a plurality of stored combinations of signals, and for identifying the component responsive to correspondence between the detected combination of signals and one of the stored combinations of signals.

4. The connector of claim 3, further comprising means for application of predetermined signals to said component while in said specified physical relationship to said housing, and means for monitoring the response of the component thereto.

5. The connector of claim 3, wherein the components of each of a plurality of classes of electrical components provide unique combinations of signals to said contact members when in said specified physical relationship to said housing.

6. The connector of claim 5, wherein the components of each of the classes have physical configurations such that when the components are placed in said specified physical relationship to said housing different combinations of said contact members unique to each of said classes are displaced from their electrically conductive relation to said conductor means.

7. The connector of claim 6, wherein some of said combinations of said contact members are displaced by electrically insulative members on said component.

8. In combination, an electric component and a connector for making electrical connection to a plurality of exposed contact elements on the component, said component comprising a body comprising locating means and a number of exposed contact elements, said connector comprising a plurality of contact members and a housing, said housing including locating means for mating with said locating means on the component, such that the physical position of the contact elements on the component is defined with respect to the contact members of the connector,

said contact members of said connector each comprising a fixed portion mounted in said housing, a terminal portion for electrical connection to a conductor, and a movable portion at least partially exposed with respect to said housing and adapted to engage a contact element on said electric component, at least said movable portion being biased into a rest position from which it is displaced when it engages a contact element on said component,

said connector further comprising shorting means adapted to physically contact and be in electrically conductive relation with the movable portions of at least some of said contact members when in said rest position,

said plurality of said contact members being arranged in at least one row and said shorting means comprising a conductive bar extending transversely to said row.

9. The combination of claim 8 wherein the shorting means is grounded.

10. The combination of claim 8 wherein different electric components displace different contact members.

11. The combination of claim 8, wherein said contact members are each formed to define a bent portion between said fixed portion and said movable portion, such that said bent portion flexes in order to provide said bias to said movable portion.

12. The combination of claim 11, wherein said shorting bar extends transversely to the movable portions of said row of contact members.

13. In combination, an electric component and a connector for making electrical connection to a plurality of exposed contact elements on the component, said component comprising a body comprising locating means and a number of exposed contact elements, said connector comprising a plurality of contact members and a housing, said housing including locating means for mating with said locating means on the component, such that the physical position of the contact elements on the component is defined with respect to the contact members of the connector,

said contact members of said connector each comprising a fixed portion mounted in said housing, a terminal portion for electrical connection to a conductor, and a movable portion at least partially exposed with respect to said housing and adapted to engage a contact element on said electric component, at least said movable portion being biased into a rest position from which it is displaced when it engages a contact element on said component,

said connector further comprising shorting means adapted to physically contact and be in electrically conductive relation with the movable portions of at least some of said contact members when in rest position,

in further combination with means connected to said contact members for identifying a particular component responsive to interaction of the contact members with the particular component.