Rotor, rotating electric machine, automobile, and method for manufacturing a rotor

Abstract

A rotor is provided that reduces the effects of electromagnetic noise in a temperature information transmission device and also reduces the risk of damage. [Solution] The rotor 20 comprises a magnet 25, a core 23, a shaft 21, and a temperature information transmitting device 50. The core 23 rotates while holding the magnet 25. The shaft 21 is mounted on the rotation axis of the core 23. The temperature information transmitting device 50 includes a temperature sensing unit 52 and a coil 51. The temperature sensing unit 52 detects temperature. The coil 51 outputs temperature information detected by the temperature sensing unit 52. The temperature sensing unit 52 is installed closer to the magnet 25 than the coil 51. The coil 51 is installed on the shaft 21.

Claims

1. Magnets and A core that rotates while holding the aforementioned magnet, A shaft provided on the rotation axis of the core, The device includes a temperature sensing unit that detects temperature and a coil that outputs information about the temperature detected by the temperature sensing unit, The temperature sensing element is installed in a position closer to the magnet than the coil. The coil is a rotor installed on the shaft.

2. The core has a gap that extends in the direction of the rotation axis, The magnet is inserted into the gap, The rotor according to claim 1, wherein the temperature sensing element is in contact with the surface of the magnet.

3. The system further includes a positioning member for positioning the temperature-sensing portion so that it contacts the surface of the magnet. The temperature-sensing part is in contact with the magnet inside the gap. The rotor according to claim 2, wherein the positioning member presses the temperature-sensing portion toward the magnet.

4. The rotor according to claim 1, wherein the coil axis of the coil extends in a direction perpendicular to the direction of the rotation axis.

5. The system further includes a fixing member for fixing the coil to the shaft, The rotor according to claim 1, wherein the fixing member includes a ring portion having a through hole into which the shaft is inserted and fixed to the shaft, and a support portion connected to the ring portion and supporting the coil.

6. Stator and, A rotor according to any one of claims 1 to 5, A temperature information receiving device provided on the stator and including a coil that is magnetically coupled to the coil of the rotor, A rotating electric machine equipped with this feature.

7. An automobile equipped with the rotating electric machine described in claim 6.

8. A method for manufacturing a rotor, comprising attaching a temperature information transmitting device to a core that rotates around a shaft as its axis while holding a magnet, the device including a temperature sensing unit for detecting temperature and a coil for outputting temperature information detected by the temperature sensing unit, The temperature-sensing element is positioned closer to the magnet than the coil, A method for manufacturing a rotor, comprising installing the coil on the shaft.

9. The method for manufacturing a rotor according to claim 8, wherein, in the installation of the temperature sensing element, the temperature sensing element is installed so as to be in contact with the surface of the magnet when the magnet is located inside a gap that extends in the direction of the rotation axis.

10. The method for manufacturing a rotor according to claim 9, wherein, in the installation of the temperature sensing element, the temperature sensing element is positioned within the gap so as to be pressed toward the magnet by a positioning member.

11. The method for manufacturing a rotor according to claim 8, wherein, in the installation of the coil, the coil is installed on the shaft such that the coil axis of the coil extends in a direction perpendicular to the rotation axis.

12. In installing the aforementioned coil, The shaft is inserted into the through hole of the ring portion of the fixing member that secures the coil, thereby fixing the ring portion to the shaft. The method for manufacturing a rotor according to claim 8, wherein the coil is supported by a support portion connected to the ring portion.

13. A method for manufacturing a rotor according to any one of claims 8 to 12, further comprising electrically connecting the temperature sensing element of the temperature sensing unit and the coil using substrate wiring or wire wrapping.

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