Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/02—Contact members
  • H01R13/10—Sockets for co-operation with pins or blades
  • H01R13/11—Resilient sockets
  • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
  • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
  • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
  • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
  • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
  • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion

Definitions

• the present invention relates to an electric terminal, in particular, with a double flexible blade.
• Electric terminals are known, formed by blanking and bending conductive sheet metal, and integrally comprising a deformable portion for connection to a cable, and a contact body cooperating with a complementary contact element, such as another electric terminal or a printed circuit.
• such a terminal is described for example in US Patent n. 3,069,652, wherein the contact body presents a first flexible contact blade cooperating with the complementary contact element; and a second reinforcing blade cooperating with the first blade when this is deformed duri; .j connection to the complementary contact element, to increase the elastic load on the latter.
• the first blade extends integrally from one end of a wall of the contact body, and is bent rearwards towards the connecting portion, while the second blade is blanked in the same wall of the contact body and projects frontwards from a portion of said wall adjacent to the connecting portion.
• the first and second blades project in opposite directions and cooperate with each other at a central portion of the contact body.
• an electric terminal comprising a deformable portion for connection to an electric cable; and a_ contact portion cooperating with a complementary contact element; said contact portion comprising a first flexible contact blade extending integrally from the front portion of a wall of said contact body and bent towards said connecting portion, said first blade cooperating elastically with said complementary contact element; and a second reinforcing blade, blanked in said wall of said contact body and cooperating with said first blade at least as of a predetermined degree of deformation of said first blade, to increase the elastic load on said complementary contact element; characterized in that said second blade extends from said front portion of said wall of said contact body towards said connecting portion of said terminal.
• Figure 1 shows a view in perspective of a female electric terminal in accordance with the teachings of the present invention
• Figure 2 shows a front view of the Figure 1 terminal
• Figure 3 shows a section along line III-III in Figure 2;
• Figure 4 shows a sheet metal blank for producing the Figure 1 terminal.
• Number 1 in Figure 1 indicates a so-called “box” type female electric terminal.
• the terms “top”, “bottom”, “front”, “rear” and similar used in the following description and claims are in no way limiting, and are used purely for description purposes with reference to the position of terminal 1 as illustrated in Figure 1 " .
• Terminal 1 is formed in one piece from conductive sheet metal by pressing and bending blank 1 ' in Figure 4.
• Terminal 1 substantially comprises a box type contact body 2 cooperating with a male blade terminal 3 (shown partially by the dotted line in Figure 3) ; and a deformable connecting portion 4 for connection to an electric cable 5.
• Body 2 substantially comprises a bottom wall 6, from a rear portion 7 of which connecting portion 4 originates; a pair of lateral walls 8a, 8b bent 90° upwards in relation to bottom wall 6; and a top wall 9 integral with one of the lateral walls (8a) and bent in relation to it in a plane substantially parallel to bottom wall 6.
• Body 2 presents a front opening 10 for insertion of male terminal 3.
• Terminal 1 also comprises a first flexible contact blade 11 (Figure 3) extending integrally from a front portion 12 of bottom wall 6, and bent inside body 2 towards connecting portion 4.
• Blade 11 presents a curved longitudinal profile with its convexity facing top wall 9, and comprises an intermediate contact portion 13 of maximum convexity facing top wall 9 and forming with wall 9 a clearance smaller than the thickness of terminal 3.
• Blade 11 also presents a free end 14 bent slightly towards top wall 9 and located close to the rear end of body 2. Transversely, blade 11 is conveniently slightly convex (Figure 2) to reduce the area of the portion contacting male terminal 3.
• Terminal 1 also comprises a second flexible 5 reinforcing blade 15 projecting from front portion 12 of bottom wall 6 towards connecting portion 4, and sloping inwards of the body so that its free end 16 is located close to and substantially parallel to the free end 14 of blade 11.
• 10 Blade 15 is in the form of a flat isosceles trapezium, and is formed in bottom wall 6 by means of a substantially U-shaped slot 17 ( Figure 4) .
• terminal 1 in accordance with the teachings of the present invention will be clear from the foregoing description.
• reinforcing blade 15 extends rearwards from the front end of body 2 enables the free bending length of the blade to be sized freely and so selected as to prevent peak insertion loads of the male terminal. Moreover, any possibility of jamming is prevented by the two blades 11, 15 extending substantially in the same direction and cooperating with each other at the respective free ends. Finally, the design of end 14 of blade 11, which is bent substantially parallel to blade 15, provides for minimizing deformation of the end portion of blade 11 by the elastic load of blade 15, and hence the portion of the elastic load of blade 15 absorbed by such deformation.
• terminal 1 as described and illustrated herein without, however, departing from the scope of the present invention.
• terminal 1 may be other than a box type, and may be connected to any type of complementary contact element, e.g. a male terminal of any design, or a printed circuit.
• blades 11 and 15 may contact each other prior to deformation, to achieve immediate action of blade 15 upon blade 11 being deformed by the complementary contact element.

Applications Claiming Priority (3)

Publications (2)

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ID=11412449

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• 1994
  • 1994-04-12 IT ITTO940273A patent/IT1273126B/it active IP Right Grant
• 1995
  • 1995-04-11 DE DE69503775T patent/DE69503775T2/de not_active Expired - Fee Related
  • 1995-04-11 EP EP95917309A patent/EP0755579B1/de not_active Expired - Lifetime
  • 1995-04-11 WO PCT/EP1995/001325 patent/WO1995028020A1/en active IP Right Grant
  • 1995-04-11 ES ES95917309T patent/ES2120745T3/es not_active Expired - Lifetime

Non-Patent Citations (1)

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