No-strip electrical connector

• US 4,037,905 A
• Filed: 12/12/1975
• Issued: 07/26/1977
• Est. Priority Date: 01/21/1974
• Status: Expired due to Term

• Current Assignee: Ideal Industries Incorporated
• Original Assignee: Ideal Industries Incorporated
• Inventors: Lucas, James F.
• Primary Examiner(s): McGlynn, Joseph H.
• Application Number:
  US05/640,252
• Time in Patent Office: 592 Days
• Field of Search: 339/97-99
• US Class Current: 439/402
• CPC Class Codes: H01R 4/2454 forming a U-shape with slotted branches

Abstract

An electrical insulated wire connector in which a through wire and tap wire are held in parallel channels in an insulating body having an integral self-locking cover and opening through its side into which a J-shaped conductive insert with slotted free ends is forced so that its slots penetrate the insulation of the wires and make an electrical connection between them.

Claims

1. A no-strip electrical connector comprising a connector body of insulating material with two longitudinal wire-receiving channels, at least one of which extends throughout the entire length of the body and opens along a top longitudinal surface of the body to accept a through wire, the other channel being for a tap wire and being also bordered by the top surface of the body and containing a generally transverse stop surface, the connector body having side openings disposed intermediate the length of the tap wire channel through a longitudinal side of the body normal to the top surface and adjacent the tap wire channel and through the connector body between the channel, and a generally bent-over, two-legged conductive insert for inserting into the opening in the side of the connector body, both ends of the insert being slotted to form U-shaped contact members on the ends thereof which, when simultaneously forced into the insulated wires lying in the channels, penetrate the insulation of the wires and make an electrical contact between them, one leg of the insert being longer than the other and being adapted to engage the through wire lying in the through wire channel, the shorter leg being adapted to engage the tap wire lying in the tap wire channel when the insert is forced into the connector body, said connector body having as an integral part thereof a hinged cover flap with means for locking it in a closed position over the top and side of the body so as to cover the channels and side opening.

2. The no-strip electrical connector of claim 1 wherein the tap wire channel is of smaller diameter than the through wire channel and the slot in the shorter leg of the conductive insert is narrower than the slot in the longer leg so that a tap wire of smaller diameter than the through wire may be connected thereto.

3. The no-strip electrical connector of claim 1 wherein the opening through the side of the body adjacent the tap wire channel is wider than the outer exposed surface of the conductive insert so that the position of the tap wire within the connector body can be viewed both before and after the conductive insert has been inserted.

4. A no-strip electrical connector of claim 1 wherein the attached cover is hinged along the bottom edge of the side of the connector body containing the insert opening;

said cover being an integral unit folded into three portions, the first to cover the side of the connector in which the insert has been inserted, the second to cover the top of the connector containing the wire-receiving channels, and the third to cover the closed side of the connector body, said connector having a means for locking the cover into closed position over the three sides.

5. The no-strip electrical connector of claim 1 wherein the longer contact leg of the conductive insert contains a keyhole-shaped aperture consisting of a hole allowing passage of the tap wire through the insert and an additional slot protruding outward therefrom for piercing the insulation of the tap wire, said additional slot having generally similar dimensions as those of the slot in the shorter contact leg.

6. The no-strip electrical connector of claim 5 wherein the metallic conductive insert has a generally flat outer base generally normal to the parallel inwardly projecting contact legs, the difference between the lengths of the legs being generally equal to the distance between the center lines of the channels, the end of the shorter leg having a slot less than the width of the conductor of the smallest tap wire and generally as deep as the width of the tap wire channel, the end of the longer leg having a slot generally less than the width of the conductor of the smallest through wire and generally as deep as the width of the through wire channel, the longer leg containing a keyhole-shaped aperture consisting of a hole and slot, said hole being generally equal in diameter to the width of the tap wire channel, said slot extending outward therefrom and having generally similar dimensions as those of the slot in the shorter contact leg, said aperture being positioned on the longer leg such that with the free end of the longer leg at the point of initial contact with the through wire channel the center of the hole of the aperture is positioned generally in line with the center line of the tap wire channel.

7. The no-strip electrical connector of claim 6 wherein the sides of one of the contact legs are folded outward generally normal to the surface of the leg so as to impart a channel shape to the leg for added strength.

8. The no-strip electrical connector of claim 6 wherein raised dimples are formed on the insert to keep the insert positioned properly in the connector body.

9. The no-strip electrical connector of claim 8 wherein recessed dimples are formed on the interior surface of the side opening to mate with the raised dimples on the insert thereby properly positioning the insert in the connector body and retaining it there until the connector is used.

10. In a no-strip electrical connector, a connector body of insulating material with two longitudinal wire-receiving channels, at least one of which extends throughout the entire length of the body and opens along a top longitudinal surface of the body to accept a through wire, the other channel being for a tap wire and being also bordered by the top surface of the body and having a generally transverse stop surface therein, the body having side openings disposed intermediate the length of the tap wire channel and opening through a longitudinal side of the body generally normal to the top surface and adjacent the tap wire channel and through the connector body between the channels, and a generally U-shaped conductive insert positioned in the openings in the side of the body with two legs, the ends of which are slotted to form U-shaped contact members which, when the insert is forced into the body with the slots straddling and overlying the wires positioned in the channels, penetrate the insulation of the wires establishing electrical contact between them, one leg being longer than the other, the longer leg being adapted to engage an insulating wire lying in the through wire channel and the shorter leg being adapted to engage an insulating wire lying in the tap wire channel when the insert is forced into the connector body.

11. The structure of claim 10 further characterized in that the other channel for the tap wire is open along the top thereof at least to the stop surface.

12. The structure of claim 10 further characterized by and including a second longitudinal side of the body generally normal to the top surface, a socket in the second side at the end of and aligned with a side opening to receive the ends of one of the insert legs.

13. In a no-strip connector for connecting a tap wire to a through wire, a connector body of insulating material having two longitudinal wire-receiving channels therein, one channel being for a through wire and being open throughout its length along one surface of the connector body and the other channel being for a tap wire to be inserted from one end and being bordered by said one surface of the body and interrupted by a stop surface intermediate the length of the connector body, a lateral passage in the connector body opening through both channels and a longitudinal side surface of the body adjacent said one surface, a movable U-shaped two-legged metal insert in the lateral passage constructed and arranged to be compressed by a hand tool into and through the channels along a line through both channels and generally normal thereto to connect the tap wire to the through wire, one leg being longer than the other, the longer leg being adapted to engage the wire in the through wire channel and the shorter leg being adapted to engage a wire in the tap wire channel when the insert is forced into the connector body, and an opening in the connector body providing visual access to the tap wire channel at a location between the stop surface and the lateral passage.

14. In a no-strip connector for connecting a tap wire to a through wire, a connector body of insulating material having two longitudinal wire-receiving channels therein, one channel being for a through wire and being open throughout its length along one surface of the connector body and the other channel being for a tap wire to be inserted from one end and being interrupted by a stop surface intermediate the length of the connector body, a common longitudinal side of the body bordering on both channels, a lateral passage in the connector body opening through both channels and a longitudinal side of the body adjacent said common side, and a generally bent-over two-legged movable metal insert therein constructed and arranged to be compressed by a hand tool into and across the channels along a line intersecting both channels to connect the tap wire to the through wire, one leg being longer than the other, the longer leg being adapted to engage the through wire lying in the through wire channel and the shorter leg being adapted to engage the tap wire lying in the tap wire channel when the insert is forced into the connector body, the ends of the legs being slotted to form U-shaped contact members, the leading edge of the insert being tapered top and bottom to overcome any tendency of the insert to jam during insertion due to expansion of the U-shaped contact member as it is forced over a wire.