Magnetic force torque converter
By integrating a rotating cover with magnetic material and a permanent magnet on the outer periphery of a permanent magnet rotor, the small external rotation motor achieves enhanced torque output and efficiency, addressing the challenge of high torque at low speeds without increasing size.
Patent Information
- Application Number
- JP2023191171
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-10-23
- Publication Date
- 2025-05-08
AI Technical Summary
Existing small external rotation motors struggle to achieve high rotational torque without increasing their physical size or requiring a reducer.
A rotating cover made of magnetic material and a permanent magnet is installed on the outer periphery of a permanent magnet rotor, forming a magnetic torque converter to enhance torque output.
This configuration allows for increased start-up torque and high torque output at low speeds without increasing the motor's size, effectively converting the motor into a low-speed, high-torque external rotation hybrid motor.
Smart Images
Figure 2025071739000001_ABST
Abstract
Description
[Technical field]
[0001] In order to increase the rotational torque of a small external rotation motor, a rotating cover (secondary wheel) made of magnetic material and having a permanent magnet is attached to the outer circumference (primary wheel) of the permanent magnet placed on the rotor, forming a torque converter that utilizes magnetic force, making it a torque converter external rotation hybrid motor with high torque at low speed. Technical background
[0002] To obtain high torque at low speed without equipping a small externally rotating motor with a reducer, the magnetic force of the permanent magnet on the externally rotating (primary wheel) is utilized, and a rotating cover (secondary wheel) made of magnetic material and having a permanent magnet is placed on the outer periphery of the rotor to form a magnetic torque converter. By rotating the rotor at high speed and rotating the cover (secondary wheel) made of magnetic material and having a permanent magnet, it is possible to increase the starting torque at low speed and high torque. Summary of the Invention Problems that the invention aims to solve
[0003] In order to make the external rotation motor low speed and high torque, the magnetic force of the permanent magnet of the rotor (primary wheel) is utilized, and a low speed and high torque external rotation motor with a magnetic torque converter is realized between the rotor (primary wheel) and the rotating cover (secondary wheel) made of magnetic material and having a permanent magnet.
[0004] The magnetic force of the permanent magnet of the rotor (primary wheel) of the external rotation motor is utilized, and a rotating cover (secondary wheel) made of a magnetic material and having a permanent magnet on the outer periphery is connected to the rotating shaft of the rotor with a bearing. In order to prevent the rotating cover from vibrating, the gap between the rotor and the rotating cover is narrowed and a rotating bearing made of Teflon or with a Teflon coating is inserted in between. Effects of the invention
[0005] By attaching a rotating cover (secondary wheel) made of magnetic material and equipped with a permanent magnet to the outer circumference of the rotor of an external rotation motor, a magnetic torque converter is formed. This makes it possible to generate high torque at low speed without significantly changing the physical size, making it possible to create a small external rotation motor that can replace an axial flow type geared motor. [Brief description of the drawings]
[0006] [Figure 1] 1 is a configuration diagram showing a first embodiment of the invention related to this application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0007] A rotating cover (secondary wheel) (1) having a magnetic material and a permanent magnet is mounted on the rotating shaft of the rotor (primary wheel) (2) of the external rotation motor using bearings (3), and a Teflon or Teflon-coated bearing (4) is placed in the gap between the rotor and the cover. [Explanation of symbols]
[0008] 1 Magnetic cover (secondary wheel) 2 Magnetic rotor (primary wheel) 3 Linked Bearings 4. Lubricated hard anodized metal bearings 5 Rotor permanent magnet 6 Rotating Cover Permanent Magnet 7 Stator
Claims
1. A magnetic torque converter that utilizes the magnetic force of a permanent magnet on the outer periphery of an externally rotating motor (primary wheel), arranges a secondary wheel made of a magnetic material and having a permanent magnet on the outer periphery of the externally rotating motor, and forms a magnetic clutch.
2. A magnetic torque converter comprising a primary wheel having a rotor structure of an external rotation motor and a secondary wheel made of a magnetic material and having a permanent magnet.
3. A magnetic torque converter in which the primary and secondary wheels are surface-treated with Teflon to reduce the gap between them, ensure close contact, maximize magnetic force, and reduce vibration.
4. A magnetic torque converter that uses metal bearings made of lubricated hard anodized aluminum to improve lubrication of the primary and secondary wheels.