Electrical connectors – Metallic connector or contact having movable or resilient... – Spring actuated or resilient securing part
Patent
1995-05-30
1997-12-30
Swann, J. J.
Electrical connectors
Metallic connector or contact having movable or resilient...
Spring actuated or resilient securing part
439852, 439861, H01R 1510
Patent
active
057022720
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a connecting terminal into which a cooperating connecting terminal is inserted, and a method of manufacturing such a connecting terminal.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partial cross sectional view showing a first example of a known connecting terminal.
FIG. 2 is a plan view illustrating a blanked or blanked plate of the first example;
FIG. 3 is a partial cross sectional view depicting a second example of a known connecting terminal;
FIG. 4 is a plan view showing a blanked plate of the second example of the connecting terminal;
FIG. 5 is a partial cross sectional view depicting a first embodiment of the connecting terminal according to the invention;
FIG. 6 is an enlarged view illustrating a main portion of the first embodiment;
FIG. 7 is a front view of the first embodiment;
FIG. 8 is a plan view showing a blanked plate of the first embodiment;
FIG. 9 is a partial cross sectional view illustrating a second embodiment of the connecting terminal according to the invention;
FIG. 10 is a plan view showing a blanked plate of the second embodiment;
FIG. 11 is a partial cross sectional view depicting a third embodiment of the connecting terminal according to the invention;
FIG. 12 is a plan view illustrating a blanked plate of the third embodiment;
FIG. 13 is a cross sectional view of a main portion of a fourth embodiment; and
FIG. 14 is a plan view of a blanked plate of the fourth embodiment.
TECHNICAL BACKGROUND
A first example of a known connecting terminal of a kind mentioned in the preamble has been described in, for instance Japanese Patent Application Publication Kokai Sho 61-165970, which is manufactured by blanking or punching an electrically conductive metal plate and then by bending or folding the thus blanked or punched plate. As shown in FIG. 1, the connecting terminal 1 is consisting of a terminal connecting portion 2 and an electric wire clamping portion 3, said terminal connecting portion 2 is surrounded by a bottom plate 4, side plates 5 and 6 projecting from both sides of the bottom plate and top plates 7 and 8 which extend horizontally from the side plates 5 and 6. A movable contact strip 9 having a contact portion 9a is folded back from a front end of the bottom plate 4 toward inside of the terminal connecting portion 2.
FIG. 2 is a plan view of a blanked plate 1' of the connecting terminal 1 formed by a punching process prior to a folding process. In the blanked plate, there are formed the terminal connecting portion 2 and wire clamping portion 3. In the terminal connecting portion 2, there are formed the bottom plate 4, side plates 5 and 6 extending from the sides of the bottom plate 4, top plates 7 and 8 extending form the sides of the side plates 5 and 6, and movable contact strip 9 extending from the front edge of the bottom plate 4.
In a next folding process, the thus blanked plate 1' is folded along broken lines. At first, the movable contact strip 9 is folded in a shape of an inverted mountain to form the contact portion 9a, and then the movable contact strip is folded over the bottom plate 4. Then, the remaining portions are folded.
In Japanese Patent Application Laid-open Publication Kokai Hei 3-93175, there is proposed a second example of a known connecting terminal, in which a loss of material can be reduced. As illustrated in FIG. 3, the connecting terminal 11 comprises a terminal connecting portion 12 and an electric wire clamping portion 13, said terminal connecting portion being surrounded by a bottom plate 14, side plates 15 and 16, and a top plate 17. Within the terminal connecting portion 12, a movable contact strip 18 having a contact portion 18a is folded from a side of the top plate 17 toward inside of the top plate and a front end of the movable contact strip 18 is held by clamping strip 19.
FIG. 4 is a plan view showing a blanked plate 11' of the connecting terminal 11. There are formed the terminal connecting portion 12 and electric wire clamping portion 13, and the terminal connecting porti
REFERENCES:
patent: 5158485 (1992-10-01), Saito et al.
patent: 5186664 (1993-02-01), Abe
patent: 5226842 (1993-07-01), Endo et al.
patent: 5271741 (1993-12-01), Saito et al.
International Search Report for International Application No. PCT/JP94/01638.
Ryosei Electro-Circuit Systems Ltd.
Swann J. J.
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