Freewheel adjustable wheel and exercise bike having same

Patent metadata

Field	Value
Publication number	US-2025177801-A1
Application number	US-202318838760-A
Country	US
Kind code	A1
Filing date	Jan 10, 2023
Priority date	Mar 22, 2022
Publication date	Jun 5, 2025
Grant date	—

Abstract

A freewheel adjustable wheel of the present invention comprises: a rotary gear unit that is rotated by receiving power from a pedal part and is provided with a gear along the outer circumference thereof; a case part that supports the rotary gear unit to be rotatable; a clutch bearing that transmits the power to the case part when the rotary gear unit rotates in the forward direction; a clutch hub that rotates together with the rotary gear unit; clutch gears installed on the clutch hub and fixed to the case part; and a drive unit that supplies rotational power; and a moveable gear unit moved by means of the power of the driving unit.

First claim

1 . A freewheel adjustable wheel comprising:
a rotary gear configured to rotate by receiving power from a pedal and equipped with a gear along an outer circumference thereof; a casing rotatably supporting the rotary gear; a clutch bearing installed between the rotary gear and the casing, wherein the clutch bearing is configured to transmit power to the casing when the rotary gear rotates in a forward direction; a clutch hub fixed outwardly of the rotary gear and configured to rotate together with the rotary gear; a clutch gear installed in series with the clutch hub and fixed to the casing; a driver fixed to the casing and configured to supply rotational power; and a moveable gear assembly configured to move by power of the driver, wherein the moveable gear assembly moves in a freewheel mode of being engaged with the clutch hub and a non-freewheel mode of being engaged with the clutch hub and the clutch gear at the same time.

2 . The freewheel adjustable wheel of claim 1 , wherein the rotary gear includes:
a pulley member located outwardly of the casing and configured to receive power from the pedal via a belt; and a rotatable body extending from the pulley member inwardly of the casing and configured to rotate together with the pulley member

3 . The freewheel adjustable wheel of claim 2 , wherein the clutch hub includes:
a disk-shaped hub body having a center coincident with a center of the rotatable body and fixed outwardly of the rotatable body; and a first outer gear installed along an outer circumference of the hub body and formed in a shape of a protrusion extending in a vertical direction.

4 . The freewheel adjustable wheel of claim 1 , wherein the casing includes:
a cover casing configured to rotate together with the clutch gear and receive rotational power via the clutch bearing, wherein the cover casing is installed in a shape to surround the clutch bearing and the moveable gear assembly; and a fixed casing supporting the driver and installed in an open portion of the cover casing.

5 . The freewheel adjustable wheel of claim 4 , wherein the clutch gear includes:
a gear body installed in an annular shape inwardly of the cover casing and fixed to the cover casing; and a second outer gear protruding outwardly of the gear body and being engaged with the moveable gear assembly to receive power.

6 . The freewheel adjustable wheel of claim 4 , further comprising a stator fixed to the fixed casing and installed in an annular shape along an edge of the fixed casing, wherein the stator is configured to generate a magnetic force.

7 . The freewheel adjustable wheel of claim 4 , wherein the driver includes:
a driving body fixed to the fixed casing and configured to supply rotational power; and an output shaft protruding outwardly of the driving body, wherein the output shaft is configured to rotate by an operation of the driving body, and is connected to the moveable gear assembly to move the moveable gear assembly.

8 . The freewheel adjustable wheel of claim 1 , wherein the moveable gear assembly includes:
a first moveable gear installed in an annular shape outwardly of the clutch hub and configured to move in a straight direction by receiving power from the driver; and a second moveable gear located inwardly of the first moveable gear and including a gear being engaged with the clutch hub and the clutch gear.

9 . The freewheel adjustable wheel of claim 8 , wherein the first moveable gear includes:
a first assembly gear installed on one side of the clutch hub and configured to move by an operation of the driver; and a second assembly gear installed on the other side of the clutch hub and connected to the first assembly gear, wherein a first coupling protrusion inserted into a coupling groove defined at an outer side of the second moveable gear is disposed at an inner side of the first assembly gear, wherein a second coupling protrusion inserted into the coupling groove is disposed at an inner side of the second assembly gear.

10 . The freewheel adjustable wheel of claim 8 , wherein the second moveable gear includes:
a second moveable gear body installed in an annular shape; a coupling groove defining an annular groove along an outer circumference of the second moveable gear body and coupled to a protrusion protruding inwardly of the moveable gear assembly; and an inner gear protruding inwardly of the second moveable gear body and being engaged with a gear disposed in the clutch gear and a gear disposed in the clutch hub.

11 . A freewheel adjustable wheel comprising:
a rotary gear configured to rotate by receiving power from a pedal and equipped with a gear along an outer circumference thereof; a shaft installed horizontally through the rotary gear and fixed to a frame; a cover casing having the rotary gear and the shaft installed through a center thereof, wherein the cover casing is rotatably installed; a fixed casing installed in a shape to shield an open portion of the cover casing, wherein rotation of the fixed casing is restricted; a clutch bearing installed between the rotary gear and the cover casing, wherein the clutch bearing is configured to transmit power to the cover casing when the rotary gear rotates in a forward direction; a clutch hub fixed outwardly of the rotary gear and configured to rotate together with the rotary gear; a clutch gear installed in series with the clutch hub and fixed to the cover casing; a driver fixed to the fixed casing and configured to supply rotational power; and a moveable gear assembly configured to move by power of the driver, wherein the moveable gear assembly moves in a freewheel mode of being engaged with the clutch hub and a non-freewheel mode of being engaged with the clutch hub and the clutch gear at the same time.

12 . The freewheel adjustable wheel of claim 11 , wherein the rotary gear includes:
a pulley member located outwardly of the cover casing and configured to receive power from the pedal via a belt; and a rotatable body extending from the pulley member inwardly of the cover casing and configured to rotate together with the pulley member.

13 . The freewheel adjustable wheel of claim 12 , wherein the clutch hub includes:
a disk-shaped hub body having a center coincident with a center of the rotatable body and fixed outwardly of the rotatable body; and a first outer gear installed along an outer circumference of the hub body and formed in a shape of a protrusion extending in a vertical direction.

14 . The freewheel adjustable wheel of claim 11 , wherein the clutch gear includes:
a gear body installed in an annular shape inwardly of the cover casing and fixed to the cover casing; and a second outer gear protruding outwardly of the gear body and being engaged with the moveable gear assembly to receive power.

15 . The freewheel adjustable wheel of claim 11 , further comprising a stator fixed to the fixed casing and installed in an annular shape along an edge of the fixed casing, wherein the stator is configured to generate a magnetic force to adjust a rotational load on the cover casing.

16 . The freewheel adjustable wheel of claim 11 , wherein the driver includes:
a driving body fixed to the fixed casing and configured to supply rotational power; and an output shaft protruding outwardly of the driving body, wherein the output shaft is configured to rotate by an operation of the driving body, and is connected to the moveable gear assembly to move the moveable gear assembly.

17 . The freewheel adjustable wheel of claim 11 , wherein the moveab

Assignees

• Lg Electronics Inc

Inventors

• Kim Min Seok
• Koh Sunggyu
• Chung Jai Whan

Classifications

• A63B24/0087

  Electric or electronic controls for exercising apparatus of groups A63B21/00 - A63B23/00, e.g. controlling load · CPC title

• A63B22/0605 Primary

  performing a circular movement, e.g. ergometers · CPC title

• A63B21/154

  using special pulley-assemblies · CPC title

• A63B21/0052

  induced by electromagnets (A63B21/0056 takes precedence) · CPC title

• A63B2022/0658

  for cycling with a group of people, e.g. spinning classes · CPC title