Coil fixing member and rotary electric machine
AssigneeDenso Corporation
InventorHiroshi KANEIWA
Life of this patent
Estimating the term…
Abstract
Each coil fixing member is placed between a stator coil and at least one end surface of a stator core in an electric rotary machine in order to suppress a displacement between the stator core and the stator coil. The coil fixing member consists of a spacer and a bolt. The bolt and a corresponding screw hole formed on an end surface of the stator core are used to fix the stator core in the electric rotary machine. The spacer consists of a main body part and a bolt fixing part. The bolt fixing part has a bolt hole. The main body part has a tapered shape. The main body part is placed between the end surface of the stator core and connection parts of windings of the stator coil, and fixed to the stator core by the bolt through the bolt hole of the bolt fixing part.
Claims13
A coil fixing member to be placed between a stator coil and at least one end surface of a stator core in an electric rotary machine having a rotor with a plurality of magnetic north and south poles alternately placed along the circumferential direction thereof, each coil fixing member suppressing a displacement between the stator core and the stator coil and fixing them together, the stator core having a plurality of slots formed along the circumferential direction of the stator core, the direction in depth of each slot being equal to the diameter direction of the stator core, the slots facing together at the inside or the outside, the stator coil comprising stator windings, each stator winding having connection parts, each connection part connecting the stator windings in slot accommodation parts together at the outside of the slots, and the slot accommodation parts being placed in different slots in the circumferential direction of the stator core,
- each coil fixing member comprising:
- a main body part to be placed between the connection parts of the stator windings and the end surface of the stator core in order to suppress the displacement between the stator coil and the stator core;
- and
- a displacement preventing member capable of preventing the displacement of the main body part placed between the stator core and the stator coil.
An electric rotary machine comprising:
- a rotor having a plurality of magnetic north and south poles, alternately placed along the circumferential direction thereof;
- a stator core having a plurality of slots formed on at least one end surface thereof along the circumferential direction;
- a stator coil comprising stator windings, each stator winding having connection parts, each connection part connecting slot accommodation parts together at the outside of the slot, and the slot accommodation parts being placed in different slots in the circumferential direction;
- and
- a plurality of coil fixing members placed between the stator coil and at least one end surface of the stator core in order to suppress a displacement between the stator coil and the stator core,
- each coil fixing member comprising:
- a main body part placed between the connection parts of the stator windings and the end surface of the stator core in order to suppress the displacement between the stator coil and the stator core;
- and
- a displacement preventing member capable of preventing the displacement of the main body part to the stator core and the stator coil.
Dependencies are inferred from the claim text.