Spool braking device for dual bearing reel

• US 20070108330A1
• Filed: 10/17/2006
• Published: 05/17/2007
• Est. Priority Date: 11/15/2005
• Status: Active Grant

• Current Assignee: Shimano Inc
• Original Assignee: Shimano Inc
• Inventors: Ikuta, Takeshi, Kawasaki, Ken'ichi, Nakagawa, Shouji
• Granted Patent: US 7,503,517 B2
• Time in Patent Office: Days
• US Class Current: 242/288
• CPC Class Codes: A01K 89/01555 using magnets

Abstract

A spool braking mechanism for a dual bearing reel includes a spool braking unit, a setting knob, an adjustment knob, and a spool controlling unit. The spool controlling unit is arranged between a spool and a reel body, and is an electrically controllable unit that controls the spool. The setting knob is movably disposed on the reel unit and is selectively positioned in a plurality of first operating positions. The setting knob is movably disposed on the reel unit and is selectively positioned in a plurality of second operating positions. The spool braking unit electrically controls the spool braking unit according to the first and second operating positions.

Claims

1. A spool braking device for a dual bearing reel comprising:

a spool braking unit configured to brake for a spool;

a first operating member configured to be movably mounted to a reel unit and configured and arranged to be selectively moved to a plurality of first operation positions;

a second operating member configured to be movably mounted to the reel unit and configured and arranged to be selectively moved to a plurality of second operating positions; and

a spool controlling unit configured to control a braking force of the spool braking unit according to the first operating positions of the first operating member and the second operating positions of the second operating member.

2. The spool braking device according to claim 1, wherein

the spool braking unit is configured to electrically control braking for the spool, and the spool controlling unit is configured to electrically control a braking force of the spool braking unit.

3. The spool braking device according to claim 2, wherein

the spool controlling unit controls the spool braking unit with a plurality of strength braking patterns in which strengths of a plurality of basic braking patterns whose degree of time-series variation of braking force are different from each other are varied.

4. The spool braking device according to claim 3, wherein

the spool braking unit includes

a first selection device that selects any of a plurality of braking modes including at least one of the plurality of basic braking patterns according to the operated first operating position of the first operating member, and

a second selection device that selects one of the plurality of strength braking patterns of the braking mode selected according to the operated second operating position of the second operating member, and

the spool braking unit is controlled by a selected strength braking pattern from the strength braking patterns.

5. The spool braking device according to claim 1, further comprising

an operation regulating mechanism that regulates an operation of the first operating member.

6. The spool braking device according to claim 2, wherein

the spool braking unit includes

a rotor having a plurality of magnets that are aligned in a rotational direction and have interchangeably opposite polarities, the rotor rotates in association with the spool,

a plurality of coils serially connected and configured to be mounted to a portion of the reel unit at predetermined intervals in a circumferential direction so that they surround the rotor, and

a switch element connected to both ends of the plurality of coils serially connected to each other, and

the spool controlling unit controls an on/off state of the switch element.

7. The spool braking device according to claim 6, wherein

the spool controlling unit controls the on/off state of the switch element by controlling a duty ratio of pulse width modulation (PWM) signals with a predetermined cycle.

8. The spool braking device according to claim 7, wherein

any of the plurality of the basic braking patterns is configured such that after a first time period has elapsed from the start of casting, the spool is braked with the constant duty ratio of 20% to 100% of a maximum braking force during a second time period, the spool is braked with a duty ratio that gradually decreases from the constant duty ratio during a third time period.

9. A dual bearing reel comprising:

a reel unit including a frame, a first side cover and a second side cover, the frame having first and second side plates, the first and second side covers covering the first and second side plates, respectively;

a spool rotatably mounted to the reel unit;

a handle configured to rotate the spool; and

a spool braking device configured to brake the spool and including

a spool braking unit configured to electrically control braking for the spool,

a first operating member movably mounted to the reel unit and configured and arranged to be selectively moved to a plurality of first operation positions,

a second operating member movably mounted to the reel unit and configured and arranged to be selectively moved to a plurality of second operating positions, and

a spool controlling unit configured to electrically control a braking force of the spool braking unit according to the first operating positions of the first operating member and the second operating positions of the second operating member.

10. The dual bearing reel according to claim 9, wherein

the spool braking unit is configured to electrically control braking for the spool, and the spool controlling unit is configured to electrically control a braking force of the spool braking unit.

11. The dual bearing reel according to claim 10, wherein

the spool controlling unit controls the spool braking unit with a plurality of strength braking patterns in which strengths of a plurality of basic braking patterns whose degree of time-series variation of braking force are different from each other are varied.

12. The dual bearing reel according to claim 11, wherein

the spool braking unit includes

a first selection device that selects any of a plurality of braking modes including at least one of the plurality of basic braking patterns according to the operated first operating position of the first operating member, and

a second selection device that selects one of the plurality of strength braking patterns of the braking mode selected according to the operated second operating position of the second operating member, and

the spool braking unit is controlled by a selected strength braking pattern from the strength braking patterns.

13. The dual bearing reel according to claim 10, further comprising

an operation regulating mechanism that regulates an operation of the first operating member.

14. The dual bearing reel according to claim 10, wherein

the spool braking unit includes

a rotor having a plurality of magnets that are aligned in a rotational direction and have interchangeably opposite polarities, the rotor rotates in association with the spool,

a plurality of coils serially connected and mounted to a portion of the reel unit at predetermined intervals in a circumferential direction so that they surround the rotor, and

a switch element connected to both ends of the plurality of coils serially connected to each other, and

the spool controlling unit controls an on/off state of the switch element.

15. The dual bearing reel according to claim 13, wherein

the spool controlling unit controls the on/off state of the switch element by controlling a duty ratio of pulse width modulation (PWM) signals with a predetermined cycle.

16. The dual bearing reel according to claim 15, wherein

any of the plurality of the basic braking patterns is configured such that after a first time period has elapsed from the start of casting, the spool is braked with the constant duty ratio of 20% to 100% of a maximum braking force during a second time period, the spool is braked with a duty ratio that gradually decreases from the constant duty ratio during a third time period.

17. The dual bearing reel according to claim 10, wherein

the first side cover is configured and arranged to expose the first operating member and cover the second operating member.

18. The dual bearing reel according to claim 10, wherein

the first side cover is configured and arranged to expose the first and second operating members.

19. The dual bearing reel according to claim 10, wherein

the first and second operating members are coaxially arranged.