Terminal unit, and connector including the same
A terminal unit includes an internal terminal for connecting to an inner conductor of a shield cable, a dielectric member for retaining the internal terminal, and an external terminal for connecting to an external conductor. The terminal unit further includes a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal. The impedance adjustment member includes an adjustment section that is disposed at a position that is between the external terminal and the internal terminal and that is a position able to adjust an impedance of a press-fit portion.
1 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the external terminal includes a main body that houses the internal terminal;
an opening is formed in the main body such that an internal space of the main body is open toward a rear side;
the adjustment section includes a lid portion having a plate thickness direction facing in a direction intersecting with a plane perpendicular to a front-rear direction, with the lid portion being disposed so as to narrow the opening;
the lid portion includes a pair of side plate portions disposed so as to sandwich the inner conductor; and
a pass through portion is formed between the pair of side plate portions to allow the inner conductor to pass through in the front-rear direction, with the pass through portion open in one direction perpendicular to the front-rear direction.
2 . The terminal unit of claim 1 , wherein:
the lid portion includes:
an upper plate portion coupling the pair of side plate portions together.
3 . The terminal unit of claim 1 , wherein the adjustment section includes a front-rear direction extension portion having a plate thickness direction facing in a direction along a plane perpendicular to a front-rear direction and extending in the front-rear direction.
4 . The terminal unit of claim 3 , wherein the front-rear direction extension portion includes:
a pair of opposing plate portions opposing each other so as to sandwich the internal terminal; and
a coupling plate portion that couples the pair of opposing plate portions together.
5 . The terminal unit of claim 1 , wherein the impedance adjustment member and the external terminal make contact with each other and are electrically connected together.
6 . The terminal unit of claim 5 , wherein contact between the impedance adjustment member and the external terminal is realized through projection portions formed at at least one of the impedance adjustment member or the external terminal.
7 . The terminal unit of claim 1 , wherein:
the impedance adjustment member is disposed at an outer face of the dielectric member; and
a placement indentation for placement of the impedance adjustment member is formed at the outer face of the dielectric member.
8 . The terminal unit of claim 1 , wherein:
the terminal unit further comprises a conductive sleeve disposed at an outer side of an insulating cover that covers the inner conductor; and
the sleeve and the impedance adjustment member make contact with each other.
9 . The terminal unit of claim 8 , wherein the sleeve is formed by a machined component, a die-cast component, or an injection molded body.
10 . The terminal unit of claim 8 , wherein contact between the sleeve and the impedance adjustment member is press contact.
11 . The terminal unit of claim 1 , wherein:
the terminal unit includes a conductive sleeve disposed at an outer side of an insulating cover that covers the inner conductor; and
the dielectric member includes an entry portion disposed inside the sleeve.
12 . The terminal unit of claim 11 , wherein the entry portion is formed in a tubular shape so as to surround the inner conductor.
13 . The terminal unit of claim 6 , wherein:
the projection portion is formed at the external terminal; and
the external terminal includes a resilient support portion that resiliently supports the projection portion.
14 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the adjustment section includes a front-rear direction extension portion having a plate thickness direction facing in a direction along a plane perpendicular to a front-rear direction and extending in the front-rear direction;
the front-rear direction extension portion includes:
a pair of opposing plate portions opposing each other so as to sandwich the internal terminal;
a coupling plate portion that couples the pair of opposing plate portions together; and
the three plate portions of the pair of opposing plate portions and the coupling plate portion each contact the external terminal.
15 . The terminal unit of claim 14 , wherein contact between each of the three plate portions and the external terminal is realized through projection portions formed at at least one of the front-rear direction extension portion or the external terminal.
16 . The terminal unit of claim 14 , wherein contact between each of the three plate portions and the external terminal is realized through projection portions formed at the external terminal.
17 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the terminal unit further comprises a conductive sleeve disposed at an outer side of an insulating cover that covers the inner conductor;
the sleeve and the impedance adjustment member make contact with each other;
contact between the sleeve and the impedance adjustment member is press contact; and
the impedance adjustment member includes a biasing portion to bias the sleeve toward the impedance adjustment member.
18 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the terminal unit further comprises a conductive sleeve disposed at an outer side of an insulating cover that covers the inner conductor;
the sleeve and the impedance adjustment member make contact with each other;
the adjustment section includes a lid portion having a plate thickness direction facing in a direction intersecting with a plane perpendicular to a front-rear direction;
the lid portion includes a side plate portion formed in a cantilever beam shape; and
the sleeve contacts the side plate portion.
19 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the impedance adjustment member and the external terminal make contact with each other and are electrically connected together;
contact between the impedance adjustment member and the external terminal is realized through projection portions formed at at least one of the impedance adjustment member or the external terminal;
the projection portion is formed at the external terminal; and
the impedance adjustment member includes a resilient contact portion that resiliently contacts the projection portion.
20 . The terminal unit of claim 19 , wherein:
the impedance adjustment member includes a hole portion; and
the resilient contact portion is a spring that is supported at both sides and formed so as to divide the hole portion.
21 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the terminal unit includes a conductive sleeve disposed at an outer side of an insulating cover that covers the inner conductor;
the sleeve and the impedance adjustment member are anchored together in a front-rear direction; and
the impedance adjustment member and the dielectric member are anchored together in the front-rear direction.
22 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the impedance adjustment member includes a first press-fit portion press-fitted onto the external conductor; and
the external terminal includes:
a main body enabling insertion of the dielectric member from rearward, and
a second press-fit portion for press-fitting together with the shield cable formed further rearward than the main body.
23 . A connector comprising:
a plurality of terminal units; and
a housing that retains the plurality of terminal units, wherein:
the terminal unit is a terminal unit of claim 1 .
24 . A terminal unit for mounting to a shield cable including at least one inner conductor and an external conductor that shields the at least one inner conductor, the terminal unit comprising:
at least one internal terminal for connecting to the at least one inner conductor;
a dielectric member that retains the internal terminal;
an external terminal for connecting to the external conductor and that houses the internal terminal; and
a conductive impedance adjustment member formed as a separate body from the internal terminal and the external terminal, wherein:
the internal terminal includes a press-fit portion for press-fitting onto the inner conductor;
the impedance adjustment member includes an adjustment section disposed at a position that is between the external terminal and the internal terminal that is a position able to adjust impedance of the press-fit portion;
the external terminal includes a main body that houses the internal terminal;
an opening is formed in the main body such that an internal space of the main body is open toward a rear side;
the adjustment section includes a lid portion having a plate thickness direction facing in a direction intersecting with a plane perpendicular to a front-rear direction, with the lid portion being disposed so as to narrow the opening;
the adjustment section includes a front-rear direction extension portion having a plate thickness direction facing in a direction along a plane perpendicular to a front-rear direction and extending in the front-rear direction;
the front-rear direction extension portion includes:
a pair of opposing plate portions opposing each other so as to sandwich the internal terminal; and
a coupling plate portion that couples the pair of opposing plate portions together;
the lid portion includes a pair of side plate portions disposed so as to sandwich the inner conductor; and
the pair of side plate portions are connected to rear ends of the pair of opposing plate portions.