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US 11,684,054 B2Granted
Spool braking device using eddy current and fishing reel having same
AssigneeDoyo Engineering Co., Ltd.
InventorKang Ho Hyun
Life of this patent
Estimating the term…
Abstract
Provided are a spool braking device and a fishing reel equipped with the spool braking device. In the spool braking device, a magnet holder with a magnet moves toward an axial direction of a spool using eddy current and thus controls a rotational speed of the spool through a varying magnetic force acting on a braking plate of the spool. The spool braking device is capable of preventing a decrease in a distance a lure travels during casting when the spool is rotated at a low speed and preventing a backlash phenomenon through a braking operation suitable for high-speed rotation of the spool.
Claims7
A spool braking device comprising:
- a braking plate provided on a first-side surface of a spool;
- a magnet holder having a magnet formed in such a manner as to face the braking plate;
- and
- a holder displacement unit displacing the magnet holder using eddy current generated between the braking plate and the magnet when the spool is rotated,
- wherein the holder displacement unit comprises:
- a receding portion, a pressing portion, or both that are formed as a cam that has a bottom point and a top point that are obliquely connected to each other;
- a first elastic body elastically supporting the magnet holder in a first-side direction of increasing a distance to the braking plate;
- and
- a slide cam into which an axial mount portion of the magnet holder is inserted,
- wherein, when the spool is rotated, while moving in an axial direction of the spool, the magnet holder controls a rotational speed of the spool with a magnet force acting on the braking plate, the magnet force varying with a distance between the braking plate and the magnet, and
- wherein the pressing portion is configured as a first end cam protruding toward a second side along a circumferential direction from the slide cam, and the receding portion is configured as a receding protrusion protruding from an outer circumferential surface of the axial mount portion and brought into contact with the first end cam.
8 more elements
A spool braking device comprising:
- a braking plate provided on a first-side surface of a spool;
- a magnet holder having a magnet formed in such a manner as to face the braking plate;
- and
- a holder displacement unit displacing the magnet holder using eddy current generated between the braking plate and the magnet when the spool is rotated,
- wherein the holder displacement unit comprises:
- a receding portion, a pressing portion, or both that are formed as a cam that has a bottom point and a top point that are obliquely connected to each other;
- and
- a first elastic body elastically supporting the magnet holder in a first-side direction of increasing a distance to the braking plate,
- wherein the magnet holder comprises:
- an axial mount portion inserted into a front-surface axial portion of a spool cover, and
- wherein the pressing portion is configured as a first end cam protruding from an outer circumferential surface of the front-surface portion and formed along a circumferential direction, and the receding portion is configured as a receding protrusion protruding from an inner circumferential surface of the axial mount portion and brought into contact with the first end cam.
8 more elements
A spool braking device comprising:
- a braking plate provided on a first-side surface of a spool;
- a magnet holder having a magnet formed in such a manner as to face the braking plate;
- and
- a holder displacement unit displacing the magnet holder using eddy current generated between the braking plate and the magnet when the spool is rotated,
- wherein the holder displacement unit comprises:
- a receding portion, a pressing portion, or both that are formed as a cam that has a bottom point and a top point that are obliquely connected to each other;
- a first elastic body elastically supporting the magnet holder in a first-side direction of increasing a distance to the braking plate;
- and
- a slide cam connected to the magnet holder in such a manner as to be rotatable or movable backward and forward in a first direction or bidirectionally, together with the magnet holder, and
- wherein the receding portion is configured as a first end cam protruding from an inner circumferential surface of the slide cam and having a bottom point and a top point that are obliquely connected to each other, and the pressing portion is configured as a pressing protrusion protruding toward the first end cam from a first side of the slide cam and brought into contact with the first end cam.
7 more elements
Dependencies are inferred from the claim text.