ELECTROMAGNETIC CONTINUOUSLY VARIABLE TRANSMISSION SYSTEM

• US 20200132181A1
• Filed: 10/25/2018
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Application

• Current Assignee: Southern Taiwan University of Science and Technology
• Original Assignee: Southern Taiwan University of Science and Technology
• Inventors: Lee, Cho-Yu, Chang, Jui-Hung, Lim, Chin-Fong
• Application Number:
  US16/170,594
• Publication Number:
  US 20200132181A1
• Time in Patent Office: Days
• CPC Class Codes: F16H 55/56 of which the bearing parts are relatively axially adjustable
• CPC Class Codes: F16H 63/062 electric or electro-mechanical actuating means
• CPC Class Codes: F16H 9/18 only one flange of each pulley being adjustable
• CPC Class Codes: H01F 2007/086 Structural details of the armature
• CPC Class Codes: H01F 7/081 Magnetic constructions
• CPC Class Codes: H01F 7/1638 Armatures not entering the winding

Abstract

An electromagnetic continuously variable transmission system is provided, including: a pulley, including a first disc having an axial sleeve and a second disc, the first disc having a plurality of grooves which extend radially at one side, pulley balls being slidably received within respective ones of the grooves, the first disc having a first slope at another side, the second disc being located by the side of the first disc with the grooves; a driving shaft, disposed in the axial sleeve and the second disc, the first disc being axially slidable relative to the driving shaft; an electromagnetic assembly, disposed on the pulley, including electromagnets spacingly arranged in a part of the grooves; when each of the electromagnets is electrified and generate magnetism, each of the electromagnets magnetically attracts one of the pulley balls toward the axial sleeve.

Claims

1. An electromagnetic continuously variable transmission system, including:

a pulley, including a first disc and a second disc, a center of the first disc having an axial sleeve, one of two sides of the first disc on an axial direction having a plurality of grooves which extend radially, a plurality of pulley balls being respectively slidably received within respective ones of the plurality of grooves, the other of the two sides of the first disc having a first slope, the second disc being located by the side of the first disc having the plurality of grooves;

a driving shaft, disposed within the axial sleeve of the first disc and the second disc, the first disc being slidable relative to an axial direction of the driving shaft;

an electromagnetic assembly, disposed on the pulley, including a plurality of electromagnets, the plurality of electromagnets being spacingly arranged in a part of the plurality of grooves and near one end of the axial sleeve;

wherein when each of the plurality of electromagnets is electrified and generate magnetism, each of the plurality of electromagnets magnetically attracts one of the plurality of pulley balls corresponding thereto toward the axial sleeve.

2. The electromagnetic continuously variable transmission system of claim 1, wherein the electromagnetic assembly further includes a conducting disc, the conducting disc is electrically connected to the plurality of electromagnets, and the conducting disc is disposed on one side of the second disc remote from the first disc.

3. The electromagnetic continuously variable transmission system of claim 2, further including a control module, the control module including a switch and a power supply unit, and when the switch is turned on, the power supply unit supplies electricity to the conducting disc.

4. The electromagnetic continuously variable transmission system of claim 2, wherein a plurality of conductive brushes extends radially beyond the conducting disc.

5. The electromagnetic continuously variable transmission system of claim 2, wherein a plurality of conductive brushes extends axially beyond the conducting disc.

6. The electromagnetic continuously variable transmission system of claim 1, further including a third disc, the driving shaft being disposed into the third disc, the first disc being between the second disc and the third disc, one side of the third disc toward the first slope having a second slope, the first slope and the second slope configured for engagement of a transmission belt therebetween.

7. The electromagnetic continuously variable transmission system of claim 1, wherein a number of the plurality of electromagnets is half a number of the plurality of grooves.

8. The electromagnetic continuously variable transmission system of claim 1, wherein the plurality of electromagnets are disposed through the second disc and project into the part of the plurality of grooves.

9. The electromagnetic continuously variable transmission system of claim 8, wherein each of the plurality of electromagnets has a curved surface which is shaped in complementary to a circumference of one of the plurality of pulley balls.

10. The electromagnetic continuously variable transmission system of claim 1, wherein the plurality of electromagnets are disposed on an outer circumference of the axial sleeve, and the plurality of electromagnets are flat.