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Electrical connector assembly having board hold down

a technology of electrical connectors and assembly parts, which is applied in the direction of coupling device connections, engagement/disengagement of coupling parts, printed circuit manufacturing, etc., can solve the problem of difficult to ensure a close coplanarity tolerance on these parts, and achieve the effect of accurate and reliable engagemen

Inactive Publication Date: 2006-07-20
HON HAI PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] An object of the present invention is to provide an electrical connector assembly having a daughter card which can accurately and reliably engage with a card edge connector thereof.

Problems solved by technology

The solder tails of the terminals and the solder tabs of the latches must be coplanar so that good solder joints can be produced, but it is difficult to ensure a close coplanarity tolerance on these parts.
This problem is especially critical in some applications where several card edge connectors are arranged on the mother board side by side.

Method used

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  • Electrical connector assembly having board hold down
  • Electrical connector assembly having board hold down
  • Electrical connector assembly having board hold down

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] Referring to FIG. 1, an electrical connector assembly 1 in accordance with the present invention comprises a mother board 10, a card edge connector 20, a daughter card 30, and a board hold down 40.

[0018] The mother board 10 comprises two rows of solder pads 11 arranged on an upper surface 12 thereof and adjacent to a front end thereof. A pair of retention holes 13 are defined adjacent to a rear end of the mother board 10. The card edge connector 20 comprises an elongate housing 21 and a plurality of contacts 22 received in the housing 21. The daughter card 30 comprises a mating edge 31 at a front end thereof and a rear edge 32 opposite to the mating edge 31. The rear edge 32 defines a pair of engaging holes 320 adjacent to opposite side edges thereof. A plurality of conductive pads 33 are provided on opposite sides of the mating edge 31 of the daughter card 30.

[0019] Referring to FIG. 2, the board hold down 40 is stamped and formed from a sheet of metal and comprises an elo...

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PUM

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Abstract

An electrical connector assembly (1) includes a mother board (10) defining a pair of retention holes (13), a card edge connector (20) mounted on the mother board, a daughter card (30) including a mating edge (31) inserted into the card edge connector and a rear edge (32) defining a pair of engaging holes (320) vertically aligned with the pair of retention holes of the mother board, and a board hold down (40). The board hold down includes a pair of supporting portions (44) supporting the rear edge of the daughter card, a pair of retaining portions (42), and an operating portion (43) between the pair of retaining portions and having a spring tab (434) locking the rear edge of the daughter card. Each of the retaining portions includes a mounting portion (422) soldered in a corresponding retention hole and a positioning portion (421) engaged with a corresponding engaging hole.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Relevant subject matter is disclosed in U.S. Patent application Ser. No. 10 / 766,158 filed on 01 / 27 / 2004 and entitled “ELECTRICAL CONNECTOR ASSEMBLY HAVING BOARD HOLD DOWN”, which is invented by the same inventor and assigned to the same assignee as this application. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an electrical connector assembly, and particularly to an assembly having a board hold down for detachably holding a circuit board to another circuit board thereof. [0004] 2. Description of Related Art [0005] Card edge connectors, such as PCI (Peripheral Component Interconnect) and PCI Express connectors, are widely used to connect daughter cards and mother boards. Typically, each of the card edge connectors generally comprises an elongate housing defining an elongate slot for receiving a mating edge of the daughter card, a plurality of terminals disposed along one or both sid...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01R13/62H01R4/38H01R12/71H05K1/14H05K3/30
CPCH05K1/141H05K3/301H01R12/7005
Inventor KORSUNSKY, IOSIF R.BROWN, ROBERT W.SHIPE, JOANNE E.
Owner HON HAI PRECISION IND CO LTD