Centralized power distribution unit having bus bars accommodated in holding grooves of insulating holders
First Claim
1. A centralized power distribution unit for a vehicular thin brushless motor, wherein said centralized power distribution unit is formed into a ring configuration and can concentratedly distribute current to stator windings of the motor, the centralized power distribution unit comprising:
- a plurality of bus bars, each having a terminal portion to be connected to a power source and one or more tabs to be respectively connected to one or more of the stator windings, the bus bars provided correspondingly with phases of the motor;
an insulating holder that holds the bus bars and maintains a predetermined gap between the bus bars; and
a resin insulating layer that covers the bus bars;
wherein a plurality of holding grooves are provided in the insulating holder; and
the bus bars, which are pre-bent in a thickness direction to be shaped into a substantially annular shape, are respectively accommodated in the holding grooves.
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Accused Products
Abstract
A centralized power distribution unit for a vehicular thin brushless motor includes a plurality of bus bars, an insulating holder that holds the bus bars to form a predetermined gap between the bus bars, and a resin insulating layer that covers the bus bars. Each of the bus bars has a terminal portion to be connected to a power source, such as a battery, and a tab to be connected to a winding of a stator. The bus bars are disposed correspondingly with phases of the motor. A plurality of holding grooves are formed in the insulating holder. The bus bars, which are pre-bent in a thickness direction to be shaped into a substantially annular shape, are respectively accommodated in the holding grooves. The pre-bending is preferably carried out by a bending machine.
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Citations
13 Claims
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1. A centralized power distribution unit for a vehicular thin brushless motor, wherein said centralized power distribution unit is formed into a ring configuration and can concentratedly distribute current to stator windings of the motor, the centralized power distribution unit comprising:
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a plurality of bus bars, each having a terminal portion to be connected to a power source and one or more tabs to be respectively connected to one or more of the stator windings, the bus bars provided correspondingly with phases of the motor;
an insulating holder that holds the bus bars and maintains a predetermined gap between the bus bars; and
a resin insulating layer that covers the bus bars;
wherein a plurality of holding grooves are provided in the insulating holder; and
the bus bars, which are pre-bent in a thickness direction to be shaped into a substantially annular shape, are respectively accommodated in the holding grooves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification