JP4672900B2 - Double bearing reel for fishing - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a double-bearing reel for fishing provided with a drag brake mechanism, and more particularly to one suitable for upsizing.
[0002]
[Prior art]
A drag brake mechanism in which a braking force is generated by frictional contact between the brake plate and the side surface of the spool is employed in most fishing reels. Usually, a friction plate for preventing wear is provided on the side surface of the spool.
[0003]
FIG. 3 is a view showing the structure of a conventional fishing double bearing reel B. As shown in FIG. In the figure, a spool 1 for winding a fishing line is pivotally supported by a shaft 2 by ball bearings, and both ends of the shaft 2 are fixed to a frame 3. Between the left end of the shaft 2 in the drawing and the spool 1, there is a disc spring 4 that suppresses the axial movement of the spool 1, and the other side of the shaft 2 always keeps the brake plate 5 away from the spool 1. An urging compression spring 6 is attached. A friction plate 1 a is attached to the side surface of the spool 1 that faces the brake plate 5.
[0004]
A drag lever 7 is fixed to the right end side of the shaft 2 in the figure, and a cam 8 is provided at the attachment portion of the shaft 2 of the drag lever 7. When the drag lever 7 rotates about the shaft 2, the cam 8 moves the brake plate 5 in the longitudinal direction of the shaft 2 according to the rotation angle and presses it against the side surface of the spool 1, and the spool 1 according to the pressing force. A braking force is applied to the rotation of the motor.
[0005]
The brake plate 5 is a metal plate, and a cork plate is used as the friction plate 1a on the spool 1 side in order to ensure frictional force with the spool 1.
The double-bearing reel B has a handle 9, and this rotation is transmitted to the brake plate 5 via a gear train 10. Therefore, the rotational force of the handle 9 is transmitted to the spool 1 according to the braking force.
[0006]
The drag brake mechanism of the reel is an extremely important mechanism for catching fish quickly and reliably, and it is no exaggeration to say that the performance of the drag brake mechanism is the performance of a fishing reel as it is. Therefore, if the fish pulling force exceeds the set braking force, the brake plate 5 and the friction plate 1a are immediately slipped, the slip is kept extremely smooth and the fishing line is reliably pulled out, and the fish pulling force is below the set value. Reel manufacturers have developed a variety of ingenuity to create a drag brake mechanism that can reliably engage and disengage the fishing line when it becomes frictional.
[0007]
The conventional structure of these drag brake mechanisms is the same as the basic structure regardless of the type of fishing reel, and one brake plate is attached to the side surface of the spool as described in FIG. The braking force is generated by the frictional force generated by the pressing.
[0008]
[Problems to be solved by the invention]
However, when the brake plate 5 is pressed from one side of the spool 1, there is no problem as long as the force pressing the spool 1 is equal, but there is no play between the spool 1 and the ball bearing or between the ball bearing and the shaft 2. Due to the backlash and the flatness error of the brake plate 5, a uniform force is not applied to the entire surface of the friction plate 1 a of the spool 1, which is always imbalanced. As a result, the spool 1 may be twisted or the brake force may fluctuate, resulting in a problem that the spool 1 cannot be smoothly rotated. In particular, when the reel becomes large, the influence is large.
[0009]
The present invention has been conceived from such facts, and is characterized by providing a double-bearing reel that can smoothly rotate the spool without causing a variation in the braking force even when a braking force is applied to a large spool.
[0010]
[Means for Solving the Problems]
To accomplish the above object, there is provided a dual-bearing reel for fishing equipped with a drag brake mechanism braking force is generated by pressing the brake plate to the both sides of the spool, the first shaft middle empty When the spool at both ends to said first axis rotatably supported by a ball bearing, is rotatably inserted to the first axis and concentric with and the first shaft to the hollow portion of the first shaft, first A second shaft that can move relative to the shaft in the thrust direction and a position that can be brought into contact with and separated from each of both side surfaces of the spool, and is rotatable with respect to the first shaft and moved in the thrust direction. Two brake plates that are freely movable, drive means that rotationally drives at least one of the brake plates, an elastic body that biases each brake plate away from the side surface of the opposing spool, and the second shaft on the other hand is fixed to the side, the shake Key and one can be pressed to the side of the opposing spool stopper means plate, fixed to the other side of the second axis, capable of pressing the pressing with a desired pressure to the sides of the spool which faces the other of said brake plate Means.
[0011]
A configuration may be adopted in which a friction plate made of a friction material for automobiles is provided on a side surface of the spool that contacts the brake plate, or the stopper means has a thrust bearing.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view of an essential part of a dual bearing reel A of the present invention. The spool 11 shown in the figure has a shape in which circular side plates are provided on both sides of the central axis. The hollow portion 11a of the central shaft has enlarged portions at both ends, and ball bearings 12 and 12 are fitted into the enlarged portions, and the hollow first shaft 13 is rotatably supported by these. Friction plates 11 b and 11 b are attached to the outside of the side plate of the spool 11.
[0013]
Near both ends of the first shaft 13, metal (aluminum or aluminum alloy) brake plates 14 and 15 are attached so as to be rotatable and movable in the axial direction. Between the brake plates 14 and 15 and the spool 11, elastic bodies 16 and 16 that urge the brake plates 14 and 15 away from the spool 11 are fitted. As the elastic body 16, a disc spring is used because it is small and can obtain a large force with a small displacement.
[0014]
A second shaft 17 is rotatably inserted into the hollow portion of the first shaft 13. The second shaft 17 is longer than the first shaft 13, protrudes on both sides of the first shaft 13, and is supported at both ends or the vicinity thereof by a frame (not shown) similar to the conventional example. A thrust bearing 18a is inserted into the left end of the second shaft 17 in the figure, its right side surface abuts on the brake plate 14, and its left side surface abuts on a retaining member 18b screwed to the second shaft 17. Yes. The stopper member 18 is constituted by the retaining member 18b and the thrust bearing 18a. With this configuration, when the second shaft 17 is moved to the right in FIG. 1, the stopper means 18 overcomes the urging force of the elastic body 16 and moves the brake plate 14 to the right in FIG. It is possible to press contact with the friction plate 11b. The brake plate 14 is integrally coupled with a gear 19 that is rotationally driven by an electric motor as drive means (not shown).
[0015]
By the way, the conventional friction plates 1a, 1a are made of cork due to the size of the friction coefficient. However, the dual-bearing reel A of the present invention is applied to the friction plates 11b, 11b as a brake lining used in an automobile. And the same friction material as the clutch plate. That is, the friction plates 11b and 11b are made of a friction material that can withstand high temperatures using plastic, metal, organic, or inorganic fibers. As such a friction material, for example, trade name “Woven Clutch ACF” or “Woven Clutch MB” of Chuo Brake Manufacturing Co., Ltd. (Sagami-cho, Koshigaya-shi, Saitama) can be exemplified.
[0016]
The reason for changing the material in this way is as follows.
For example, lubricating oil such as grease for ball bearings and thrust bearings is used for the reels. In fishing, when the brake plates 14 and 15 are pressed against the friction plates 11b and 11b and the brake is applied, the temperature rises due to frictional heat. This temperature rise spreads to the surroundings, and the grease melts and scatters around and adheres to the brake plates 14 and 15 and the friction plates 11b and 11b. When the friction plates 11b and 11b are cork, the adhered grease becomes lubricating oil, the friction coefficient is extremely reduced, and the brake is hardly effective. On the other hand, in the case of the brake lining and clutch plate for automobiles described above, although the friction coefficient decreases due to the adhesion of lubricating oil such as grease, it is sufficient that the brake force is sufficiently reduced to ensure the braking force.
[0017]
A ratchet gear 20 is attached to the right end of the first shaft 13 in FIG. The ratchet gear 20 is integrally coupled to the brake plate 15 and rotates via a gear train (not shown) when a reel handle (not shown) as a driving means is turned. . The ratchet gear 20 prevents reverse rotation of the spool 11, and although not shown in the drawing, a claw for preventing reverse rotation is attached.
[0018]
FIG. 2 is a view showing a fitting portion between the ratchet gear 20 and the first shaft 13. The right end portion 13a of the first shaft 13 has a square shape, and the center hole 20a of the ratchet gear 20 is a square hole having a size that allows the right end portion 13a to be inserted lightly but without rattling. Accordingly, the ratchet gear 20 rotates with the first shaft 13, but the first shaft 13 can move in the thrust direction.
[0019]
One end of the drag lever 21 is fixed to the second shaft 17. The drag lever 21 is integrally provided with a cam 22. When the drag lever 21 is rotated around the second shaft 17, the distance between the drag lever 21 and the ratchet gear 20 changes. The drag lever 21 and the cam 22 constitute a pressing means.
[0020]
Now, the description of the configuration is completed, and then the operation is described.
First, the operator grasps the tip of the drag lever 21 and rotates the drag lever 21 around the second shaft 17. By this rotation, the cam 22 increases the distance between the drag lever 21 and the ratchet gear 20, and the ratchet gear 20 is pressed in the left direction in FIG. Then, the entire second shaft 17 is moved in the right direction in FIG. 1 by the reaction force, so that the brake plate 14 is pressed against the friction plate 11 b on the left side of the spool 11 by the stopper means 18. At the same time, the ratchet gear 20 moves to the left, and the brake plate 15 integrated with the ratchet gear 20 comes into pressure contact with the friction plate 11 b on the right side of the spool 11. In short, the spool 11 is pressed by the brake plates 14 and 15 with the same force from both sides, and the rotation from the handle or the electric motor is transmitted by the frictional force between the brake plates 14 and 15 and the friction plates 11b and 11b. Become. At this time, a desired braking force can be set by adjusting the position of the drag lever 21.
[0021]
In the present invention, since the friction force is obtained by pressing the spool 11 with the brake plates 14 and 15 from both sides, the spool 11 is not tilted or twisted even if a large drag force is set. Thus, the spool 11 can be rotated. In particular, since there is a thrust bearing 18a, the first shaft 13 and the second shaft 17 can rotate relatively lightly even when the brake plates 14 and 15 are pressed against the friction plate 11b of the spool 11 with a strong force. .
[0022]
【The invention's effect】
As described above, the present invention is a fishing dual-bearing reel having a drag brake mechanism that generates a braking force by pressing a brake plate against a side surface of a spool, and is rotatably inserted into the spool. A hollow first shaft that is formed, a second shaft that is concentric with the first shaft in a hollow portion of the first shaft and rotatably inserted with respect to the first shaft, and both side surfaces of the spool. Two brake plates which are provided at detachable positions and are rotatable with respect to the first shaft and movable in the thrust direction; drive means for rotationally driving at least one of the brake plates; and each brake plate An elastic body urging in a direction away from the side surface of the opposing spool, stopper means provided on one side of the second shaft and capable of pressing one of the brake plates against the side surface of the opposing spool, and the second shaft Provided on the other side of And a pressing means capable of pressing the other side of the brake plate against the opposite side surface of the spool with a desired pressing force, so that the braking force can be applied by pressing the brake plate with a large force from both sides of the spool. The spool can be prevented from being twisted or tilted by the braking force, and the rotation can be made smooth.
[0023]
If a friction plate made of a friction material for automobiles is provided on the side of the spool that contacts the brake plate, the optimum friction coefficient can be selected by appropriately combining the materials of the brake plate and the friction plate. can do.
[0024]
If the stopper means has a thrust bearing, even if a large frictional force (braking force) is applied to the spool, the relative rotation between the first shaft and the second shaft can be lightly rotated without being hindered. it can.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing the structure of a double bearing reel for fishing according to the present invention.
FIG. 2 is a view showing a fitting portion between the ratchet gear of FIG. 1 and a first shaft.
FIG. 3 is a cross-sectional view showing the structure of a conventional fishing double bearing reel.
[Explanation of symbols]
11 Spool 11a Hollow part 11b Friction plate 13 First shaft 14, 15 Brake plate 16 Elastic body 17 Second shaft 18 Stopper means 18a Thrust bearings 21, 22 Pressing means

Claims (3)

A double-bearing reel for fishing equipped with a drag brake mechanism that generates a braking force by pressing the brake plate against both sides of the spool,
A middle empty first axis (13), a spool (11) rotatably supported at both ends of the ball bearing to the first axis (13) (12, 12), the hollow portion of the first shaft (11a ), A second shaft (17) that is concentric with the first shaft and is rotatable with respect to the first shaft, and is movable relative to the first shaft in the thrust direction, and both side surfaces of the spool Two brake plates (14, 15) which are provided at positions where they can contact and separate from each other and are rotatable with respect to the first shaft and movable in the thrust direction, and at least one of the brake plates is driven to rotate. Driving means, an elastic body (16) for urging each brake plate (14, 15) away from the opposite side surface of the spool, and one side of the second shaft (17) fixed to the brake One of the plates (14) can be pressed against the opposite side of the spool. Tsu path and means (18), fixed to the other side of the second axis (17), the brake plate in the other (15) capable of pressing at a desired pressure to the sides of the opposed spool pressing means (21, 22) and a dual bearing reel for fishing.   The double-bearing reel for fishing according to claim 1, wherein a friction plate (11b) made of a friction material for automobiles is provided on a side surface of the spool (11) contacting the brake plate (14, 15). .   The double bearing reel for fishing according to claim 1 or 2, wherein the stopper means (18) has a thrust bearing (18a).

Images