Connection structure of shielded terminal and shielded electrical wire
A connection structure of a shielded terminal 10 and a shielded electrical wire 60 includes a shielded electrical wire 60 including a shield layer 63 ; and a shielded terminal 10 including an outer conductor 20 connected to the shield layer 63 , wherein the outer conductor 20 is formed by assembling a first shell 21 including an electrical wire connection portion 30, 31, 32 that comes into contact with an outer circumference of the shield layer 63 , and a second shell 22 including a compression bonding portion 44 that is crimped to an outer circumference of the electrical wire connection portion 30, 31, 32 , and a catch portion 36 that catches on an outer circumferential surface of the shield layer 63 is formed in the electrical wire connection portion 30, 31, 32.
1. A connection structure comprising:
a shielded electrical wire including a shield layer; and
a shielded terminal including an outer conductor configured to be connected to the shield layer,
wherein
the outer conductor is formed by assembling
a first shell including at least one electrical wire connection portion that extends rearward in an axial direction of the shielded electrical wire and is configured to come into contact with an outer circumference of the shield layer, each of the at least one electrical wire connection portion supported at one end by a forward portion of the first shell, and
a second shell including a compression bonding portion that is configured to be crimped to an outer circumference of the at least one electrical wire connection portion, and
a catch portion including an opening edge of a through hole is formed in at least one of the at least one electrical wire connection portion, the opening edge formed on an inner circumferential surface of the at least one electrical wire connection portion and configured to catch on an outer circumferential surface of the shield layer when the compression bonding portion is crimped.
2. The connection structure according to claim 1 , wherein
the through hole extends from an outer circumferential surface of the at least one electrical wire connection portion to the inner circumferential surface of the at least one electrical wire connection portion and is formed by a pressing process with respect to each of the at least one electrical wire connection portion, and
the pressing process produces a right angle edge on the inner circumferential surface of the at least one electrical wire connection portion.
3. The connection structure according to claim 1 , wherein
the at least one electrical wire connection portion includes a plurality of electrical wire connection portions disposed at intervals in a circumferential direction of the shielded electrical wire.
4. The connection structure according to claim 1 , wherein
the compression bonding portion includes a crimping portion that extends in a circumferential direction from a base portion while supported on only one side, and
an engagement projection that engages with an engagement hole of the electrical wire connection portion is formed on an extending end portion of the crimping portion.
5. The connection structure according to claim 4 , wherein
the engagement projection digs into the shield layer.
6. The connection structure according to claim 4 , wherein
the shield layer covers an outer circumferential surface of an insulating cover of the shielded electrical wire, and
the engagement projections are configured to be extended through the shield layer so as to dig into the insulating cover when engaged with the engagement hole.
7. The connection structure according to claim 4 , wherein
the engagement hole is disposed further back than the through hole.
8. The connection structure according to claim 4 , wherein
an opening area of the engagement hole is greater than an opening area of through hole.
9. The connection structure according to claim 1 , wherein
the compression bonding portion includes a crimping portion that extends in a circumferential direction from a base portion while supported on only one side,
the compression bonding portion is crimped at an outer circumferential edge portion of the crimping portion to give a maximum amount of deformation, and
the catch portion is disposed in a region pressed by an outer circumferential edge portion of the crimping portion.