JPH1175643A5 - - Google Patents

Description

[0077]
SUMMARY OF THE INVENTION An object of the present invention is to provide a centrifugal braking device for a dual-bearing reel that allows for easy adjustment of braking force.

[0009]
In this centrifugal braking device, when the spool rotates, the rotating member rotates in tandem, causing the braking member to move outward due to centrifugal force. When the braking member contacts the braking surface, friction acts on the rotating member, braking the spool. The braking force is determined by the number of braking members that can contact the braking surface before reaching the travel limit position. This braking force can be adjusted by moving the fixed member in the axial direction of the rotating member using a moving mechanism. Because the braking surface has a conical shape, as the fixed member approaches the rotating member, the diameter of the contact circle between the braking surface of the fixed member and the braking member decreases, shortening the travel distance of the braking member relative to the braking surface. Therefore, even braking members whose travel limit position is close to the rotating member can contact the braking surface, gradually increasing the number of braking members that can contact it, and thus increasing the braking force. Conversely, as the fixed member moves away from the rotating member, the travel distance of the braking member relative to the braking surface increases. Therefore, only braking members whose movement limit position is far from the rotating member can come into contact with the braking surface, reducing the number of braking members that can come into contact and reducing the braking force. Here, the braking force caused by centrifugal force can be adjusted by the simple operation of moving the fixed member, making braking force adjustment work easy.

[0022]
The large diameter portion 16a is disposed within the internal space of the bobbin trunk 12b of the spool 12, and has serrations 16d formed on the outer peripheral surface of its central portion for securing the spool 12. A parallel chamfered portion 16e that constitutes the clutch mechanism 13 is formed on the right end of the large diameter portion 16a in FIG.
The left small-diameter portion 16c is further tapered in two steps, and its base end is formed with serrations 16f for fixing the rotating member 66 of the centrifugal brake mechanism 23. The tip end is supported by a bearing 35a on the brake case 65. The right small-diameter portion 16b supports the pinion gear 32 so that it can move axially. Both ends of the spool shaft 16 have spherical surfaces to prevent an increase in rotational resistance.