JPS64761Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a backlash prevention device using magnetic braking for a double bearing type reel.

This type of conventional magnetic braking system requires a large space inside the reel side plate because magnetic pole rings with magnets are placed on the inside and outside of the non-magnetic conductive ring provided on the spool, and The drawback is that the reel weight also increases.

The present invention is an attempt to improve these defects, and includes an arcuate magnet on the inner and outer sides of a non-magnetic conductive ring protruding from one side of the spool, and an arcuate yoke piece with a diagonal cut section formed in approximately half of the spool. The inner one is fixed to the outer circumferential surface of the spool shaft supporting cylinder, and the outer one is fixed to the inner circumferential surface of a rotary cylinder rotatably provided on the reel side plate, and the rotary cylinder is fixed to the reel side plate. The gist is that it is formed so that it can be rotated by a handle provided on the side.

An embodiment of the present invention will be described with reference to the drawings. A spool shaft 4 having a spool 3 fixed thereto is supported via a bearing 5 between the reel side plates 1 and 2 of a double-bearing reel. A non-magnetic conductive ring body 6 made of aluminum or the like is provided protrudingly.

A dish-shaped frame 9 is fixed inside the reel side plate 1 and has a notch 7 in the front part and a support cylinder 8 for a bearing 5 protruding from the center part, and the front part of the outer peripheral surface of the support cylinder 8 is fixed to the inside of the reel side plate 1. A permanent magnet 10 is fixed in an arc shape through a yoke 11 and a mounting ring 11', and a rotary cylinder 12 is rotatably provided in the dish-shaped frame 9.
Meshing teeth 13 are integrally formed on the outer periphery of the holder so as to be exposed from the notch 7, and on the inner periphery thereof, the non-magnetic conductive ring 6 is sandwiched between the meshing teeth 13 and facing the permanent magnet 10. An arcuate yoke piece 14 is provided with a diagonal cut portion 14'.

Further, the meshing teeth 13 mesh with an operating shaft 15 gear 16 pivotally supported on the reel side plate 1, and the operating shaft 1
By rotating the handle 17 of No. 5, the rotating barrel 12 is made rotatable via the gear 16 and the meshing teeth 13, and the arcuate yoke piece 14 is deviated counterclockwise with respect to the permanent magnet 10. Then, the oblique cut portion 14 comes to face the permanent magnet 10, and finally the arc-shaped yoke piece 14 is formed so as not to face the permanent magnet.

However, the permanent magnet 10 has a plurality of magnets 10', 10' having NS magnetic poles disposed intermittently in the radial direction of the spool 3, but on the surface of one permanent magnet.
It is also possible to use one in which the NS poles are magnetized alternately.

Since the embodiment of the present invention is constructed as described above, by rotating the handle 17, the diagonal cut portion 1 of the arcuate yoke piece 14 is removed.
When the part other than 4' is made to face the permanent magnet 10 as shown in FIGS. 2 and 5, the magnetic flux density by the permanent magnet 10 generates an eddy current in the non-magnetic conductive ring 6, and the maximum spool damping causes the fishing line to buckle. From this state, when the arcuate yoke piece 14 is rotated counterclockwise with the handle 17 so that the diagonal cut portion 14' of the arcuate yoke piece 14 faces the permanent magnet 10, it becomes non-magnetic. The eddy current generated in the conductive ring 6 gradually decreases, and the spool braking force gradually decreases, and the braking force becomes minimum when the arcuate yoke 14 is completely separated from the magnet 10 portion as shown in FIGS. 4 and 7.

In the above embodiment, the arc-shaped yoke piece 14 is placed on the outside of the non-magnetic conductive ring 6, and the magnet 10 is placed on the inside. It can also be made to rotate.

In the present invention, an arc-shaped magnet is mounted on one of the inner and outer sides of a non-magnetic conductive ring protruding from a spool, and an arc-shaped yoke piece with a diagonal cut portion formed in approximately half is mounted on the other side. Since the braking force is adjusted according to the overlapping state of the arc-shaped yoke that is formed to be rotatable and faces the arc-shaped magnet, the braking force is controlled by a partial magnetic field formation mechanism of the non-magnetic conductive ring, and moreover, neither of the magnets The spool can be braked on only one side, preventing the fishing line from collapsing without requiring a large space or large weight as in conventional methods, and is an advantage of this type of magnetic braking system in that it can reduce the weight of the reel. It has great features and practicality.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view of the present invention, Fig. 2 is a longitudinal sectional front view of the invention, Figs. 3 and 4 are longitudinal sectional front views of the main parts of the invention, respectively, and Figs. 5 to 7 are FIG. 3 is an explanatory diagram showing the operating state of the present invention. DESCRIPTION OF SYMBOLS 1... Reel side plate, 3... Spool, 4... Spool shaft, 6... Non-magnetic conductive ring, 8... Support tube, 10... Permanent magnet, 12... Rotating tube, 14...
...Arc-shaped yoke piece, 14'...Bevel cut portion, 17...Handle.

Claims (1)

[Scope of utility model registration request] An arcuate magnet and an arcuate yoke piece with a diagonal cut portion formed on approximately half of the yoke are arranged to face each other on the inside and outside of a non-magnetic conductive ring protruding from one side of the spool, and the inner part is placed on the outer peripheral surface of the spool shaft support cylinder. and the outer part is fixed to the inner circumferential surface of a rotary tube rotatably provided on a reel side plate, and the rotary tube is formed so that it can be rotated by a handle provided on the reel side plate. Backlash prevention device for double bearing type reel.