Multipolar electrical connector

Details Multipolar electrical connector Multipolar electrical connector

1996-02-27

1998-07-14

Nguyen, Khiem

Electrical connectors

With contact preventer or retractable cover part

Movably mounted

H01R 13453

Patent

active

057794910

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to a multipolar electrical connector, and particularly to a multipolar electrical connector in which a number of contacts are arranged and protruded into an insertion space for a counter connector.


BACKGROUND ART

In a multipolar electrical connector of this kind, contacts are configured by pins of a diameter of 0.8 mm, or by thinner pins of a diameter of 0.5 mm. The distance between adjacent contacts (the pitch of the contacts) is as small as about 2 mm. If one of the contacts is bent and the pitches of the contacts are partly disturbed so that the pitches are no longer uniform, there arise problems as follows. When a counter electrical connector is inserted into an insertion space of the body, the end face of the counter electrical connector bumps against the contact, with the result that the counter electrical connector cannot be completely inserted. When the counter electrical connector is further inserted by force, the contact which bumps against the end face buckles.
Such misalignment of contact pitches due to a bend of a contact easily occurs, for example, in the case where an external force is accidentally applied to a contact in handling such as that the multipolar electrical connector is transported or mounted to an apparatus, or where one or more of the contacts are twisted when a counter electrical connector is inserted into an insertion space for the connector.
In a prior art multipolar electrical connector, an insertion space is defined and a number of contacts are pressingly inserted into the body, thereby protruding them into the insertion space for a counter electrical connector, which insertion space is disposed in the body. Therefore, a sort of protection against an external force is realized as a whole by peripheral walls which define the insertion space. However, such protection is not done in such a manner that the contacts are individually prevented from being subjected to an external force. Consequently, a bend or buckling of a contact which may occur in the case such as where an external force is accidentally applied or where one or more of the contacts are twisted by a counter electrical connector inserted into the insertion space cannot be surely prevented from occurring.


SUMMARY OF THE INVENTION

It is an object of the present invention to provide a multipolar electrical connector wherein a cover member is disposed in an insertion space of the body, the cover member being displaceable in the insertion space together with a counter electrical connector which is to be inserted into and extracted from the insertion space, and the multipolar electrical connector is configured so that, when the counter electrical connector is not inserted into the insertion space, the tip ends of the contacts do not protrude outside of the cover member, whereby, when the counter electrical connector is not inserted, the contacts are individually protected from an external force.
It is another object of the present invention to provide a multipolar electrical connector wherein the connector is configured so that, even in the case where a contact is bent, when the bend is formed under certain conditions, the contact is introduced into a hole portion of a counter electrical connector when the counter electrical connector is inserted into an insertion space of the body, while being guided by a hole portion which is formed in a cover member, whereby all contacts can be respectively connected in an unforced manner with contacts of the counter electrical connector.
In order to attain the noted objects, the multipolar electrical connector of the present invention is a multipolar electrical connector which comprises a body having an insertion space for a counter electrical connector, and a number of contacts which protrude into the insertion space while being arranged at predetermined spaces, wherein the connector further comprises: a cover member which is placed in the insertion space, covers an opening portion of the insertion space, and is displaceable in

REFERENCES:
patent: 2935726 (1960-05-01), Raymond
patent: 3739322 (1973-06-01), Haegert
patent: 3893744 (1975-07-01), Porazinski
patent: 4808127 (1989-02-01), Swanic
patent: 4969834 (1990-11-01), Johnson
patent: 5167516 (1992-12-01), Tan et al.
patent: 5466164 (1995-11-01), Miyazaki et al.
patent: 5492780 (1996-02-01), Okada

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