Insulators

DETAILED DESCRIPTION I claim: 1.
An insulator for an electrical terminal, comprising a housing made from a plastic material including two opposed pairs of walls which define between them a continuous elongated passage which passes through the housing, a stop adjacent one end of the passage adapted to arrest movement of a terminal through the housing, an outward step in one wall of the passage, a catch integral with and hinged at one end to the step in the stepped wall of the passage, a face on the catch remote from the catch hinge, said face having a length at least twice the thickness of the wall to which the catch is attached; the catch being movable on said hinge between a first position on the outside of the housing and in which said face is substantially normal to the outer surface of said wall to which it is attached and clear of the passage and a second position in which it has passed through an opening in the wall and in which a portion of the catch is located in the passage to trap a terminal in the passage between the catch and the stop, and a formation on the catch adapted to engage a formation adjacent the edge of the opening through which the catch is movable to hold the catch in said second position.
2.
An insulator as claimed in claim 1 in which the opening in the wall through which the catch passes in movement from said first to second positions extends from the end of the catch which is opposite said one end to a position short of the step in the wall and the outer edges of the opening are coincident with the lower edges of the catch when the catch is in said first position.
3.
An insulator as claimed in claim 2 in which a slot which is as deep as the thickness of the wall extends from each side of the opening on either side of the catch into the step so that the hinge of the catch is in the step in the wall.
4.
An insulator as claimed in claim 3 including two catches which are arranged side by side in the stepped wall.
5.
An insulator as claimed in claim 4 in which a guide projects from one wall of the housing into the passage to engage and transversely to locate a terminal located in the passage