Insulation displacement contact capable of securely terminating a wide range of electrical conductors
An insulation displacement contact (IDC) is capable of securely terminating wires having a wide range of diameters. The IDC is also designed to withstand repeated terminations of wires having diameters at the large end of the supported size range while remaining capable of securely terminating wires having diameters at the small end of the range. To these ends, the IDC comprises two or more distinct flex regions. At least one of the flex regions has an associated mechanical stop that limits the degree of deformation that can be applied to that region as a wire is being terminated on the IDC. If the diameter of the wire being terminated on the IDC is large enough to deflect the first flex region to the end of its deflection range, the mechanical stop is engaged, causing further deflection to be transferred to the next flex region.
1 . An insulation displacement contact, comprising:
a base region; and
a first blade and a second blade that extend from the base region and form a slot therebetween,
wherein
a first hole that is wider than the slot is formed at a bottom of the slot between the first blade and the second blade,
the first blade comprises a first flex region located part way along a length of the first blade between the base region and a top of the first blade,
the first flex region comprises a second hole formed through the first blade and a gap that traverses from a perimeter of the second hole to an outward-facing edge of the first blade,
a portion of the first blade above the first flex region flexes away from the second blade about the first flex region by a degree limited by a mechanical stop comprising facing edges of the gap, and
while the mechanical stop is engaged, the first blade flexes away from the second blade about a second flex region, created by inclusion of the first hole, located on the base region at a meeting point between the first blade and the second blade.
2 . The insulation displacement contact of claim 1 , wherein
the portion of the first blade above the first flex region is configured to flex away from the second blade until the facing edges of the gap contact one another.
3 . The insulation displacement contact of claim 1 , wherein
the second blade comprises another first flex region located part way along a length of the second blade between the base region and a top of the second blade, and
a portion of the second blade above the other first flex region is configured to flex away from the first blade about the other first flex region by a degree limited by another mechanical stop associated with the other first flex region.
4 . The insulation displacement contact of claim 3 , wherein the upper portion of the first blade and the upper portion of the second blade angle toward one another while the insulation displacement contact is at rest with no wire installed in the insulation displacement contact.
5 . The insulation displacement contact of claim 1 , wherein the first blade comprises multiple flex regions including the first flex region.
6 . The insulation displacement contact of claim 1 , wherein
the portion of the first blade above the first flex region is configured to flex away from the second blade in response to insertion of a wire into the slot, and
insertion, into the slot, of a wire having a diameter that exceeds a diameter threshold causes the mechanical stop to be engaged.
7 . The insulation displacement contact of claim 1 , wherein at least a portion of the slot has a width that is less than or equal to 6 mils.
8 . A cable connector comprising at least one insulation displacement contact according to claim 1 .
9 . An insulation displacement contact, comprising:
a first blade and a second blade that extend from a base region and define a slot between respective inward-facing edges of the first blade and the second blade,
wherein
a first hole wider than the slot is formed at a bottom of the slot between the first blade and the second blade,
in response to insertion of a wire into the slot, an upper portion of the first blade pivots away from the second blade about a first flex region formed on the first blade between the base region and a top of the first blade and located part way along a length of the first blade, wherein the first flex region comprises a second hole formed through the first blade and a gap that traverses from a perimeter of the second hole to an outward-facing edge of the first blade, and
in response to engagement of a mechanical stop comprising facing edges of the gap while the upper portion of the first blade is pivoting away from the second blade, the first blade pivots away from the second blade about a second flex region that is created by inclusion of the first hole and located on the base region at a meeting point between the first blade and the second blade.
10 . The insulation displacement contact of claim 9 , wherein
the portion of the first blade above the first flex region flexes away from the second blade until the facing edges of the gap engage, and
engagement of the facing edges transfers deformation stress of the first blade from the first flex region to the second flex region.
11 . The insulation displacement contact of claim 9 , wherein
in response to the insertion of the wire into the slot, an upper portion of the second blade pivots away from the first blade about another first flex region formed on the second blade between the base region and a top of the second blade, and
in response to engagement of another mechanical stop associated with the other first flex region while the upper portion of the second blade is pivoting away from the first blade, the second blade pivots away from the first blade about the second flex region.
12 . The insulation displacement contact of claim 11 , wherein the upper portion of the first blade and the upper portion of the second blade angle toward one another while the insulation displacement contact is at rest and no wire is inserted in the slot.
13 . The insulation displacement contact of claim 9 , wherein the first blade comprises multiple flex regions including the first flex region.
14 . The insulation displacement contact of claim 9 , wherein at least a portion of the slot has a width that is less than or equal to 6 mils.
15 . A cable connector comprising at least one insulation displacement contact according to claim 9 .
16 . A method, comprising:
receiving a wire in a gap between a first blade and a second blade that extend from a base region of an insulation displacement contact, wherein a first hole wider than the gap is formed at a bottom of the gap;
in response to the receiving, deflecting, about a first flex region located part way along a length of the first blade between the base region and a top of the first blade, a portion of the first blade above the first flex region, wherein the deflecting is enabled by a gap that traverses from a second hole formed through the first blade to an outward-facing edge of the first blade; and
in response to engagement of facing edges of the gap during the deflecting, deflecting the first blade away from the second blade about a second flex region located on the base region at a meeting point between the first blade and the second blade and created by inclusion of the first hole.
17 . The method of claim 16 , further comprising, in response to the receiving of the wire, deflecting, about another first flex region located part way along a length of the second blade between the base region and a top of the second blade, a portion of the second blade above the other first flex.
18 . The method of claim 17 , wherein the upper portion of the first blade and the upper portion of the second blade angle toward one another while the insulation displacement contact is at rest and no wire is inserted into the gap.
19 . The method of claim 17 , wherein the first blade comprises multiple flex regions including the first flex region.
20 . The method of claim 17 , further comprising transferring in response to the engagement of the facing edges, deformation stress of the first blade from the first flex region to the second flex region.