JPH035257Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a backlash prevention device for a double-bearing type fishing reel that brakes the rotation of the spool using the magnetic force of a permanent magnet.

Conventionally, this type of backlash prevention device is known to move a permanent magnet close to or away from a magnetic body or non-magnetic conductor that rotates integrally with the spool. Displacement of the permanent magnets is not possible with strict parallelism, and it is even more difficult to displace the permanent magnets when the permanent magnets are arranged in a ring.

SUMMARY OF THE INVENTION In view of the above drawbacks, it is an object of the present invention to propose a backlash prevention device for a double-bearing fishing reel that has a simple structure, is easy to assemble and disassemble, and allows fine braking adjustment.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments. FIGS. 1 to 3 show the first embodiment, and the double bearing type reel is shown in FIG.
The spool 3 is fixed to the spool shaft 13 between the inner reel plates 2 and 12, and the spool shaft is held in parallel with one bearing 14 and the other bearing (not shown). It is configured to be rotatably supported on a shaft and rotated by a handle 15 via a clutch mechanism and a gear train mechanism (not shown).
A holding case 4 holding a bearing 14 is fitted and fixed to a, and a sliding member 5 and a sliding plate 6 are provided in the holding case 4, and the sliding member is connected to the spool 3 by a spring 16.
The yoke 17 and the rare earth permanent magnet 7 are fixed to one end of the sliding member 5, and the rare earth permanent magnet 7 is forced to move away from the yoke 18 fixed to one side of the spool 3. It faces a non-magnetic conductor 19 made of copper material, and is configured such that an adjustment knob 8 is rotatably provided on the reel side plate 2 and the holding case 4, and the sliding member 5 is slid in the axial direction via a slide plate 6. has been done.

The holding case 4 is formed into a cup shape with a bottom, and has a shaft cylinder 4a protruding from the bottom. The bearing 14 is fitted and fixed in the center hole of the shaft cylinder, and an E-ring 20 is engaged with the outer periphery of the shaft cylinder 4a. A circumferential groove is formed, an oval-shaped through hole 4b is bored at the bottom of the outer side of the shaft cylinder 4a as shown in FIG. 2, and a circular protrusion 4c is protruded from the center of the outer side.

The sliding member 5 includes a through hole 5a fitted into the shaft tube 4a, an annular portion 5b to which the yoke 17 and the rare earth permanent magnet 7 are fixed, and upper and lower inclined surfaces inclined in the axial direction formed at the outer bottom. Formed by 5c, 5c,
As shown in FIG. 3, a plurality of rare earth permanent magnets 7 are arranged and fixed on the yoke 17 so that adjacent magnets have different polarities.

As shown in FIGS. 1, 2, and 4, the slide plate 6 has an elongated hole 6a in the center into which the shaft cylinder 4a is inserted, and the inclined surfaces 5c, 5c are formed on the upper and lower sides of one side.
Inclined surfaces 6b, 6 inclined in the axial direction in sliding contact with
b is formed, and an arm portion 6c that is inserted into the through hole 4b extends from the upper end of the other side.

As shown in FIGS. 1 and 5, the adjustment knob 8 has a knob 8a, a protrusion 8b that fits into the through hole 2a of the reel side plate 2, a recess 8c that fits the circular protrusion 4c of the holding case 4, and an outer periphery. A circumferential spiral cam groove 8e is formed in which the tooth profile 8d and the arm portion 6c are fitted, and the engagement piece 21 is engaged with the tooth profile 8d.

When the buck crash prevention device is constructed as described above and the adjustment knob 8 is rotated, for example, in the direction of the arrow in FIG. As the plate 6 moves up and down, the sliding member 5 moves forward in the direction of the spool 3 due to the engagement of the inclined surfaces 6b and 5c that are inclined in the axial direction, and the rare earth permanent magnet 7 is brought close to the non-magnetic conductor 19 for adjustment. When the knob 8 is rotated in the opposite direction, they are separated, and when the spool 3 is rotated, an eddy current is generated in the non-magnetic conductor 19 by the rare earth permanent magnet 7, and the rotation of the spool 3 is braked.

When the buck crash prevention device is configured as described above, the sliding member 5 to which the sliding plate 6 and the permanent magnet 7 are fixed and the spring 16 are inserted into the outer periphery of the shaft cylinder 4a of the holding case 4 from the spool 3 side, and the E-ring 20 to prevent it from coming off, and the adjustment knob 8 is rotatably provided between the outside of the holding case 4 and the reel side plate 2, making assembly and disassembly easy, and preventing sand etc. from getting inside the holding case 4. It is also easy to disassemble and clean.

Further, it is easy to precisely process the dimensions of the inclined surfaces 5c and 6b of the sliding member 5 and the slide plate 6 so that the permanent magnet 7 moves back and forth while maintaining parallelism with the non-magnetic conductor 19.

The spool 3 may be made of aluminum or the like and may be a non-magnetic conductor.

Furthermore, the rotation of the spool 3 may be braked by fixing a magnetic body such as an iron plate to one side of the spool and facing the rare earth permanent magnet, and magnetically attracting the magnetic body with the magnetic force of the rare earth permanent magnet.

The permanent magnet 7 in the above description includes annular magnets 22 magnetized with different polarities alternately in the circumferential direction as shown in FIG.
may also be used.

Since the present invention is constructed as described above, the sliding member having the sliding plate and the permanent magnet fixed to it from the spool side in the holding case and the spring are fitted so that the sliding member can move back and forth in the axial direction and are separated from the spool. The adjustment knob can be rotatably provided between the outside of the holding case and the reel side plate, making the configuration simple and easy to assemble and disassemble. It is easy to disassemble and clean even if the spool gets stuck, and even when using a magnet with a large area facing the spool side, it can be displaced with high precision parallelism, making it efficient and easy to use. It is possible to provide a crash prevention device for a double-bearing type fishing reel, which has excellent practical effects such as being able to adjust the braking.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a cross-sectional front view of essential parts of a double-bearing reel in which the invention is implemented; Fig. 2 is a side view of the holding case seen from the outside of the adjustment knob; Figure 3 is a perspective view of the permanent magnet and yoke, Figure 4 is a front view of the slide plate, and Figure 5 is the first
FIG. 6 is a cross-sectional view taken along the line 1--2, and FIG. 6 is an external perspective view of another embodiment of the permanent magnet. 1... Reel inner plate, 2... Reel side plate, 3...
...Spool, 4...Holding case, 4b...Through hole, 5...Sliding member, 5c, 6b slope, 6...
Slide plate, 6c... Arm, 7... Permanent magnet, 8
...Adjustment knob, 8e...Spiral cam groove, 16...
Spring, 19...Nonmagnetic conductor.

Claims (1)

[Scope of utility model registration request] A fishing reel that brakes the rotation of the spool by placing a permanent magnet facing a magnetic material or non-magnetic conductive material that rotates together with the spool, is formed in the shape of a cup with a bottom on the inside plate of the reel, and has an axial tube at the bottom. A holding case having a protruding and elongated through hole is fixed to the holding case, and a sliding member having the permanent magnet fixed to the shaft cylinder of the holding case is provided so as to be slidable in the axial direction, and the sliding member A slide plate having an extended arm to be inserted into the through hole of the holding case is fitted into the shaft cylinder between the holding case and the holding case so as to be slidable in a direction perpendicular to the axial direction, and the sliding member and the holding case are slidably connected to each other. An inclined surface is provided on the joining surface of the plates, and the sliding member is pressed into contact with a spring that urges it in a direction away from the spool, and an adjustment knob is rotatably provided between the outside of the holding case and the inside of the reel side plate. The arm portion of the slide plate is inserted into the circumferential spiral cam groove provided on the adjustment knob, and the slide plate slides in a direction perpendicular to the axial direction, thereby moving the slide member forward in the spool direction. A backlash prevention device for a double-bearing type fishing reel, which is characterized by: