Connector with easily mating grounding contact

Details Connector with easily mating grounding contact Connector with easily mating grounding contact

1999-12-29

2001-04-17

Nguyen, Khiem (Department: 2839)

Electrical connectors

Electromagnetic or electrostatic shield

Multi-part shield body

C439S095000, C439S786000

Reexamination Certificate

active

06217386

ABSTRACT:

BACKGROUND OF THE INVENTION
1. The Field of the Present Invention
The present invention relates to a connector, and particularly to an electrical connector whose grounding contacts can easily be connected with shells for producing a good shielding effect.
2. Description of the Prior Art
A conventional connector shown in
FIGS. 4-5
comprises an insulative housing
2
′, a plurality of contacts
1
′ and a plurality of shell
3
′. A pair of crimps
14
′ are formed on the distal end of the engaging portion
12
′ of each contact
1
′. Being cut from a metal sheet with the contact as a pair of tabs on opposite sides of the contact and then being oppositely bent toward each other produces the two crimps. In assembly each shell
3
′ covers a protrusion
24
′ of the housing
2
′, two retention tabs
32
′ of the shell
3
′ being inserted into appropriate arc slots (not shown) in a front wall of the housing
2
′. A distal end of each of the retention tab
32
′ is exposed to a passage
22
′ of the housing
2
′ for contacting and interferingly fitting with the crimps
14
′ of the contact
1
′ (shown in FIG.
5
).
In the prior art the two crimps
14
′ are small controlled by the breadth of the engaging portion
12
′ of the contact
1
′ so that the resiliency is decreased and the rigidity is increased. The distal end of the retention tab
32
′ forces two crimps
14
′ open and is inserted therebetween. The contact and the shell firmly fit together but the interacting forces between them are so great that they can be damaged easily. Moreover, the retention forces required between the housing and the shell are great to prevent from separating from the housing during connection. An improved electrical connector is required to overcome the disadvantages of the prior art.
SUMMARY OF THE INVENTION
An object of the present invention is to provide an electrical connector whose contacts can be easily connected with shells.
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.
A connector in accordance with the present invention comprises an insulative housing, a plurality of contacts and a plurality of shells. The housing has a bottom wall and a front wall forming a plurality of protrusions. A plurality of contact receiving passages is defined through the housing for receiving engaging portions of the contacts. A spring arm is formed on each engaging portion. The spring arm is large compared to the two crimps of the prior art, and thus has sufficient resiliency for resiliently engaging with a retention tab of the shell. The engaging force between the contact and the shell is relatively small and the retention force required between the housing and the shell is not great, so that assembling the contact with the shell while keeping the shell engaged with the housing is easily done. Guide faces are provided on a distal section of the spring arm and on the engaging portion of the contact to aid insertion of the retention tab therebetween.


REFERENCES:
patent: 6074223 (2000-06-01), Huang
patent: 6095824 (2000-08-01), McHugh
patent: 6116926 (2000-09-01), Ortega et al.
patent: 6123583 (2000-09-01), Huang

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