Electrical connectors – Contact comprising cutter – Insulation cutter
Patent
1996-11-06
2000-07-25
Bradley, Paula
Electrical connectors
Contact comprising cutter
Insulation cutter
439417, 439395, H01R 1340
Patent
active
060930470
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to an improvement of slot type electrical terminals and more particularly to the electrical terminal blocks employing slot-type terminals.
2. Description of the Prior Art
Generally, terminal blocks employing electrical terminal contacts, are used in great variety and numbers in communication equipment to facilitate electrical connection of insulated electrical conductors to the contacts in the data processing system and harness thereof as well as to other conductors. In the past, the electrical connection has been accomplished by stripping the insulation from one end of the conductor and then soldering the conductor to the terminal contacts.
As a method of connecting an insulated conductor into a contact of a conductor terminal, there has been proposed soldering of the conductor material to the contact. However, this procedure requires considerable skill on the part of the workmen making the solder connection and is somewhat cumbersome and time consuming. In order to overcome these disadvantages, terminal blocks employing insulation-penetrating slot-type terminal contacts have been developed. The slot type terminal includes a pair of electrically conductive vertical blades, "each having a slot", or "forming slot therebetween" at free ends thereof as a contact. The construction of blades permits electrical connection simply by penetrating the insulation of conductors. The penetration into the insulation is obtained by compressive forces applied to the conductors during seating of the wire in the terminal contact slot without stripping the insulation. In this slot-type terminal, problems may arise during the insertion procedure in that the crimping action of the slot to the conductor material requires that the conductor be restrained from flexing at this point so as not to damage the conductor. The flexing may cause degradation of the conductor material which ultimately results in its breaking off.
The conventional conductor connecting terminal will be described hereinbelow with reference to FIG. 1 to 3.
FIG. 1 shows an exploded view of the conventional connector block provided with the slot type terminal block. W denotes the insulated conductor, reference number 1 denotes terminal block body, 2 denotes the conductor connecting terminal included in the terminal block body, and 3 denotes the cover thereof.
FIG. 2 shows the cross sectional view of the insulated conductor. Wc denotes insulated conductor, D denotes the diameter of the conductor material, and Wi denotes the insulation of the conductor.
FIG. 3 shows the perspective view of the conventional slot-type connecting terminal, finished with connection of the related insulated conductor, widely used in the terminal block shown in FIG. 1.
With reference to FIG. 1, a terminal block body 1 which allows connection of plurality of conductors has a plurality of recesses 4 for accepting related insulated conductor connecting terminals 2 in the shape of conductive strip material. As can be seen in FIG. 3, each of the connecting terminals 2 is comprised of an elongated rectangular base portion 5, a pin connector portion (not shown) extending at one end of said base portion, and a pair of upstanding blades 6 and 6, first blade 6 being extended upwardly at the other end of the base portion 5 and second blade 6 being extended upwardly and in parallel with said first blade at a distance therefrom. The upstanding blades 6 and 6 have respective U-shaped slots 8 in the vicinity of the center of the free end thereof provided with a pair of downwardly converging and oppositely disposed tapered edges 7 and 7. Said edges 7 and 7 form a pair of knife edges with sharp-edged blade therebetween. Since the distance between opposite knife edges substantially equals the diameter of the conductor Wc, depressing the insulated conductor into the slot 8 results in penetration of the knife portion into the insulation and thus the making of electrical connection of the insulated conductor with
REFERENCES:
patent: 2408045 (1946-09-01), Cottrell
patent: 3964816 (1976-06-01), Narozny
patent: 4074929 (1978-02-01), Krider
patent: 4109991 (1978-08-01), Evans
patent: 4256360 (1981-03-01), Debaight
patent: 4296988 (1981-10-01), Warner
patent: 4354719 (1982-10-01), Weidler
patent: 4773875 (1988-09-01), Huiskes
patent: 5022867 (1991-06-01), Kourimsky et al.
patent: 5088934 (1992-02-01), Chow et al.
patent: 5295857 (1994-03-01), Toly
patent: 5683266 (1997-11-01), Guidi et al.
Bradley Paula
Ta Tho Dac
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