EP0622982A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improved burn-in socket apparatus
Assignee: Texas Instruments Inc
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Filing: 1994-04-21
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Granted: —
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Expires: 2014-04-21
Abstract
Abstract A burn-in socket is shown including a latch member (60) capable of moving leads (101) of an IC package (100) received on a seat (200) on a base member (20), biasing the leads into engagement with movable contact arms (212) of contacts (21) mounted in the base member. A linking mechanism (50), movable in dependence upon the vertical movement of a cover member (30), transmits the cover member movement to latch member (60). Linking mechanism (50) has an arm (52) pivotably connected at one end to the cover member (30) and at an opposite end to a lever body (54) intermediate opposite ends thereof. The lever body has one end pivotably connected to base member (20) and its opposite end connected to latch member (60). A return spring (40) places a bias on the cover to maintain it normally separated from the base member and provides a selected contact force. The socket can be used with a wide variety of IC package types either before or after leads extending from the IC package have been formed.
Inventors
- 👤 Masahiro Fuchigami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:13
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02; G01R1/04; G01R1/0408; G01R1/0433; H; H05; H05K; H05K7/00; H05K7/02; H05K7/10; H05K7/1015; H05K7/1023
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
255 words
Socket apparatus for receiving an integrated circuit package having a plurality of leads extending therefrom comprising a base member having an integrated circuit package receiving seat formed thereon, the base member mounting a plurality of contact elements arranged in a selected array, the contact elements each having a main body portion mounted in the base member, a terminal portion extending downwardly from the body portion to a point below the base member and a movable contact arm extending upwardly toward the integrated circuit package receiving seat, a cover member disposed over the base member and being movable between a position engaging the base member and a position away from the base member, spring means for applying a bias to the cover member urging the cover member away from the base member, a latch member and a linking mechanism coupled to the cover member, the latch member movable toward and away from the movable contact arms, the position of the latch member being dependent upon the position of the cover member, the linking mechanism comprising arm means having a first end pivotably attached to the cover member and a second end, lever means having a first end pivotably attached to the base member and a second end attached to the latch member, the lever means having an intermediate portion attached to the second end of the arm means, the lever means pivoting about the first end of the lever means with the latch member moving toward the movable contact arms as the cover member moves upwardly.
Claim 2
Dependent Claim
22 words
A socket apparatus according to claim 1 further including means to limit movement of the cover member away from the base member.
Claim 3
Dependent Claim
107 words
A socket apparatus according to claim 1 or 2 in which the spring means comprises at least one coil spring disposed between the base member and the cover member and at least one elongated element having a free distal end extending upwardly from the base member, the cover member having an aperture therethrough for each elongated element, an elongated element received in each aperture and a flange formed on the free distal end of each elongated element, the flange having an outer periphery larger than the aperture receiving the elongated element to form a stop surface limiting motion of the cover member away from the base member.
Claim 4
Dependent Claim
72 words
A socket apparatus according to claim 1, 2 or 3 in which the movable contact arms have a free distal end portion lying in a plane when the cover member is in its position engaging the base member against the bias of the spring means and the latch member having a lower surface which moves below the plane when the cover member is in its outer position away from the base member.
Claim 5
Dependent Claim
52 words
A socket apparatus according to claim 4 in which the distance the lower surface of the latch member moves below the plane is represented by AA' and the distance the cover moves causing the movement of the lower surface of the latch member AA' is represented by CC' with CC' >> AA'.
Claim 6
Dependent Claim
39 words
A socket apparatus according to any one of the preceding claims in which the integrated circuit package receiving seat has first and second opposite sides and a separate latch member and linking mechanism is provided for each opposite side.
Claim 7
Dependent Claim
45 words
A socket apparatus according to claim 1 in which the integrated package receiving seat has first and second opposite sides and front and back opposite sides and a separate latch member and linking mechanism is provided for each first and second, front and back side.
Claim 8
Dependent Claim
35 words
A socket apparatus according to claim 1 in which the movable contact arms extend generally in a straight line upwardly and inwardly from the contact main body portions towards the integrated circuit package receiving seat.
Claim 9
Dependent Claim
15 words
A socket apparatus according to claim 1 in which the lever means is generally L-shaped.
Claim 10
Dependent Claim
27 words
A socket apparatus according to claim 1 in which the arm means comprises first and second arms and the lever means comprises first and second lever bodies.
References Cited (Backward Citations)
US5020998A
Cited
EP0457472A1
Cited
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