Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Patent
1998-11-02
2000-08-22
Nguyen, Khiem
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
439660, H01R 909
Patent
active
061063061
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a connector which is capable of coupling two wiring elements with a gap therebetween, in the manner of a stacking connector which couples a plurality of printed wiring elements disposed in a layered structure, and simultaneously electrically connects wiring provided on the wiring elements.
BACKGROUND ART
Commonly, as shown in FIGS. 19 and 20, such a stacking connector 1 has a receptacle connector 3 affixed to a printed circuit board 2, and plug connector 5 affixed to another printed circuit board 4, and by engaging these, the connector simultaneously conducts the positioning of printed circuit boards 2 and 4 and the electrical connection of the wiring on printed circuit boards 2 and 4.
That is to say, receptacle connector 3 is provided with a plurality of contacts 6 which are connected to the wiring of one printed circuit board 2, and a receptacle housing 7 which is in the shape of a box with a floor having a rectangular shape in horizontal cross section, which accepts these contacts 6; plug connector 5 is provided with a plurality of contacts 8 which connect with the wiring of the other printed circuit board 4, and a plug housing 9 which has the shape of a rectangular parallelopiped block and holds the contacts 8 in a unitary manner.
That is to say, when a receptacle connector 3 and plug connector 5 having such a structure are connected, the plug housing 9 is inserted within the receptacle housing 7, and thereby the two are engaged with a gap having a constant fit therebetween, and the printed circuit boards 2 and 4 are positioned with respect to one another with an accuracy depending on the dimensions of the fitted gap.
Now that portable electronic apparatuses such as portable phones and the like have come to be widely used as a result of developments in the miniaturization and reduction in weight of electronic products, in concert with a miniaturization and decrease in weight in the printed circuit boards 2 and 4 installed within such electronic apparatuses, it is also necessary to reduce the size and weight of the connectors 1 connecting these printed circuit boards 2 and 4. In order to reduce the size and weight of such connectors 1, light weight materials are employed, and a reduction in size of contacts 6 and 8 requires that the walls of housings 7 and 9, and in particular, receptacle housing 7, be made thinner, while maintaining the minimum strength required for the positioning and affixing of printed circuit boards 2 and 4.
However, as a result of the reduction in size and weight, there are problems in that the strength of the receptacle housing 7 with respect to impact is reduced when the walls thereof are made thinner. In particular, in portable electronic apparatuses such as portable telephones and the like, there is a high frequency of such impacts during use as a result of droppage and the like, and the receptacle housing 7 may break as a result of the repetition of such impacts.
In particular, as shown by arrow A in FIG. 20, when an impact force is applied in the longitudinal direction to the receptacle housing 7, cracks C are likely to be produced between the side walls 7a and opening end 7b of the receptacle housing 7 disposed at the ends in the longitudinal direction. The reason for this is that the side walls 7c of the receptacle housing 7 which run in the longitudinal direction receive the impact force from the plug housing over a broad surface area, and in addition the points of contact between connectors 6 and 8 are commonly provided in the transverse direction of receptacle housing 7, so that this has the effect of ameliorating the impact force as a result of the elastic deformation of contacts 6 and 8, while the side walls 7a of the receptacle housing 7 disposed at the ends in the longitudinal direction do not have such an amelioration effect, and directly receive the impact force over a narrow surface area.
Furthermore, the reason that cracks C are produced in the corner part between the side walls 7a and the opening end 7
REFERENCES:
patent: 3644873 (1972-02-01), Dalton et al.
patent: 3850497 (1974-11-01), Krumreich et al.
patent: 5013264 (1991-05-01), Tondreault
patent: 5199884 (1993-04-01), Kaufman et al.
patent: 5626483 (1997-05-01), Naitoh
patent: 5931689 (1999-08-01), Patel
PCT International Search Report JP97/00900, Mar. 19, 1997.
Kodaira Yoshihiko
Koga Masahiro
Framatome Connectors International
Nguyen Khiem
Nguyen Son V.
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