SPOOL BRAKE DEVICE OF DUAL-BEARING REEL

• US 20090166459A1
• Filed: 11/26/2008
• Published: 07/02/2009
• Est. Priority Date: 12/28/2007
• Status: Active Grant

• Current Assignee: Shimano Inc
• Original Assignee: Shimano Inc
• Inventors: NIITSUMA, Akira, KAWASAKI, Ken'ichi
• Granted Patent: US 7,648,096 B2
• Time in Patent Office: Days
• US Class Current: 242/287
• CPC Class Codes: A01K 89/01555 using magnets

Abstract

A spool brake mechanism 25 is a device for braking a spool. The spool brake mechanism 25 includes a spool brake member 40 and a control component 55. The control component 55 is configured to control a spool brake member with first braking force. The control component 55 is also configured to control the spool brake member with second braking force when tension detected by a tension detection member becomes equal to or less than a reference tension.

Claims

1. A spool brake device of a dual-bearing reel configured to brake a spool that is rotatably mounted to a reel unit and arranged to wind a fishing line around the periphery surface thereof, the spool brake device comprising:

a spool brake member being configured to electrically-controllably brake the spool;

a first braking force setting element being configured to set first braking force;

a tension setting element being configured to set a reference tension;

a tension detection member being configured to detect tension to be applied to the fishing line;

a second braking force setting element being configured to set second braking force by multiplying the first braking force by a predetermined scale factor; and

a spool control component being configured to control the spool brake member with the first brake force at the start of braking, the spool control component being configured to control the spool brake member with the second braking force when tension detected by the tension detection member becomes equal to or less than the reference tension after the start of braking.

2. The spool brake device according to claim 1, further comprising

a timer configured to start counting when the detected tension becomes equal to or less than the reference tension.

3. The spool brake device of a dual-bearing reel according to claim 2, wherein the spool control component is configured to control the spool brake member with the second braking force when the timer finishes counting.

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

after casting a first timer value counted by the timer is less than subsequent timer values counted by the timer.

5. The spool brake device according to claims 1, further comprising

a velocity detection member configured to detect rotational velocity of the spool.

6. The spool brake device of a dual-bearing reel according to claim 5, wherein the spool control component is configured to reduce the first braking force in conjunction with reduction of the rotational velocity detected by the velocity detection member.

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

the spool control component is configured to reduce the first braking force in proportion to the square of the detected rotational velocity.

8. The spool brake device according to claim 1, wherein

the spool control component is configured to start controlling the spool brake member when the detected tension becomes equal to or less than a predetermined value.

9. The spool brake device according to claim 7, wherein

the spool control component is configured to reduce the reference tension in conjunction with reduction of the detected rotational velocity.

10. The spool brake device according to claim 1, wherein

the first braking force setting element and the second braking force setting element are capable of setting a plurality of first braking forces and a plurality of second breaking forces, respectively, the plurality of first braking forces being different from each other, the plurality of second braking forces being different from each other.

11. The spool brake device according to claim 10, further comprising

a braking force selection portion being configured to select one of a plurality of combinations formed by selecting one of the plurality of first braking forces and one of the plurality of second braking forces.

12. The spool brake device according to claim 10, wherein

the reference tension setting element is capable of setting a plurality of reference tensions depending on the plurality of first braking forces.

13. The spool brake device according to claim 2, further comprising

a damping rate setting portion being configured to set temporal damping rate of the second braking force.

14. The spool brake device according to claims 13, wherein

the spool control component is configured to reduce the second braking force at the set damping rate in accordance with time to be elapsed after the timer finishes counting.

15. A spool brake device of a dual-bearing reel configured to brake a spool that is rotatably mounted to a reel unit and arranged to wind a fishing line around the periphery surface thereof, the spool brake device comprising:

a first spool brake member being configured to brake the spool with a first braking force in conjunction with rotation per unit time of the spool;

a second spool brake member being configured to brake the spool with electrically-controllable second braking force;

a tension setting element being configured to set reference tension;

a tension detection member being configured to detect tension to be applied to the fishing line;

a second braking force setting element being configured to set a second braking force generated by multiplying the first braking force by a predetermined scale factor; and

a spool control component being configured to control the second spool brake member with the second brake force when tension detected by the tension detection member becomes equal to or less than the reference tension.

16. The spool brake device according to claim 15, wherein

the first spool brake member includes a brake shoe and a brake drum, the brake shoe being capable of integrally rotating with the spool, the brake shoe being capable of radially moving outward by means of centrifugal force to be generated by rotation of the spool, the brake drum being arranged on the outer peripheral side of the brake shoe in the reel unit, the brake drum being capable of making contact with the brake shoe.