Patent ID: 9564706
Date: 2017-02-07
CPC Classifications: H01R

Claim:
1. A connection unit comprising: a terminal block comprising a nut-accommodating portion adapted for accommodating a nut, the nut-accommodating portion located on one side of the terminal block in which an opening is formed in an axial direction of the nut, and a holding portion that has a hole formed through the holding portion; a terminal-connecting portion that is partially exposed when viewed from the other side of the terminal block and is fixed to the holding portion in such a way that a part of an outer surface of the terminal-connecting portion is in tight contact with an inner surface of the hole of the holding portion; and a nut cover for covering a top surface of the nut accommodated in the nut-accommodating portion to prevent the nut from coming off the accommodating portion, the connection unit being fitted on a housing that houses a power unit, the connection unit being adapted to sandwich the terminal-connecting portion and an external terminal that is connected to the power unit, between a head of a bolt inserted from the other side and the nut accommodated in the nut-accommodating portion, for electrically connecting the terminal-connecting portion to the external terminal, the connection unit further comprising: a first restricting means for restricting a movement of the nut cover relative to the terminal block both in an axial direction of the bolt and in a first direction perpendicular to the axial direction; and a second restricting means for restricting a movement of the nut cover relative the terminal block in a second direction perpendicular both to the axial direction and to the first direction, the second restricting means comprising: a locking hook formed on one of the terminal block and the nut cover; and a locking hole formed in the other one of the terminal block and the nut cover, the locking hole being adapted to receive the locking hook, wherein the nut cover disposed at the one side of the terminal block in the axial direction of the nut has a bolt through-hole for the bolt to penetrate such that a tip end of a screw thread of the bolt protrudes from the nut cover with the nut being thread-engaged with the bolt.