Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
1999-09-14
2001-06-26
Donovan, Lincoln (Department: 2839)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
C439S733100, C439S252000
Reexamination Certificate
active
06250969
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector having a dielectric housing and a plurality of contacts compactly retained in the housing without damaging the housing.
U.S. Pat. Nos. 4,133,593; 4,645,278 and 5,535,100 disclose connectors each having a dielectric housing and a plurality of contacts received in the housing. The housing defines a plurality of apertures each having a tubular periphery and provides a partition between proximate apertures. When received in a corresponding aperture, the contact abuts against the partition between the proximate apertures and exerts a stress on the partition because the partition is lack of a recess means for spacing the contact therefrom. The stress may crack the partition between proximate apertures and produces a crack in the partition, especially when the pitch between proximate contacts is very small. During soldering procedure, melted tin will flow into the crack and electrically connect proximate contacts resulting in a short circuit thereof. Hence, an improved electrical connector is required to overcome the disadvantages of the prior art.
BRIEF SUMMARY OF THE INVENTION
An object of the present invention is to provide a connector having a dielectric housing and a plurality of contacts compactly received in the housing without damaging the housing.
Accordingly, an electrical connector comprises a dielectric housing and a number of contacts received in the housing. The housing defines three aligned apertures and a partition is provided between two proximate aperture. The housing defines four recesses equiangularly disposed in a periphery of each aperture and two selected recesses thereof are respectively recessed in two partitions beside the aperture. Therefor each contact is received in a corresponding aperture and abuts against parts of the periphery of the aperture that are not recessed therein while being spaced from the partition. Thus, stress exerted on the partitions is limited thereby preventing the partitions from being crushed by the contacts.
Each part is offset a predetermined angle from a line connecting the centers of the apertures. Each part comprises an arcuate surface and a pair of opposite side faces having extensions passing through the center of the associated aperture and forming an angle therebetween. The contacts abut against corresponding arcuate surfaces of the parts thereby securely retaining the contacts in corresponding apertures. The housing also defines a countersunk at an entrance of each aperture for facilitating insertion of the contact into the correspond aperture.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description of the present embodiment when taken in conjunction with the accompanying drawings.
REFERENCES:
patent: 3122407 (1964-02-01), Cowe
patent: 4620757 (1986-11-01), Thevenaz
patent: 4684193 (1987-08-01), Havel
patent: 5489221 (1996-02-01), Fujiura et al.
patent: 5885113 (1999-03-01), Bricaud
Chung Wei Te
Donovan Lincoln
Hon Hai - Precision Ind. Co., Ltd.
Nguyen Son V.
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