JPH08322440A - Centrifugal brake for double bearing reel - Google Patents

Abstract

PURPOSE: To provide the subject brake capable of avoiding backlash by applying proper levels of braking force. CONSTITUTION: A support pin 2a is projected in parallel with the shaft center of a spool 6 on the side of the spool 6 mounted on a double bearing reel and engaged, in a revolvable way, with the basal part of a brake shoe 4 in a stick fashion, and a stationary ring 5 is attached onto a side frame 7 rotatably supporting the spool 6 so as to enclose the brake shoe 4; in this case, the inner circumference 5a of the stationary ring 5 is set along the rotational orbit of the brake shoe 4 in spool rotation and the inner diameter of the stationary ring 5 is set so that the tip of the brake shoe comes into contact therewith when the brake shoe 4 rotates concomitantly with the rotation of the spool 6; furthermore, a spring 3 oriented so as to energize on spool side is attached with its one end on the side of the spool 6 and its other end on the brake shoe 4, and the springy force of the spring 3 is made smaller than the centrifugal force applying onto the brake shoe 4 at a certain spool rotational speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal braking device used for a dual bearing reel.

[0002]

2. Description of the Related Art When lure fishing is performed using a dual-bearing reel, the speed of the yarn drawn out from the spool immediately after landing after casting is suddenly reduced, and the yarn stops coming out when the lure is landed. , The spool that rotates due to the withdrawal of the thread tries to rotate at the same speed as the speed before the landing of the lure due to the inertia even after the withdrawal speed of the thread slows down or even after the withdrawal of the thread stops. The spool rotation speed became faster than the drawing speed, causing backlash of the yarn. Therefore, when casting using both bearing reels, technology to hold the spool with your finger after casting,
So-called summing was used to match the yarn drawing speed with the spool rotation speed to prevent backlash. However, the summing is a very advanced technology,
This was a difficult technique for beginners and others, and it could not be done easily. Therefore, some conventional dual-bearing reels are provided with a centrifugal brake on the spool in order to prevent the back crush of the yarn that occurs during casting as described above without using summing.

In a conventional centrifugal brake 104, a support pin 100a is provided around the spool side surface 100 in a radial direction toward the outer periphery of the spool, and a cylindrical brake shoe 101 is slidably inserted into the support pin 100a. ,
The fixing ring 102 is provided on the side frame that rotatably supports the spool.
And the inner circumference 10 of the fixing ring 102.
3 is located along the outside of the rotation path of the brake shoe when the spool rotates. In the centrifugal brake 104 configured as described above, when the spool rotates at a constant speed during casting, the brake shoe 101 fitted into the support pin 100a slides toward the outer peripheral side due to centrifugal force, and By making contact along the circumferential surface 103, an appropriate resistance is added to the rotation of the spool, and this rotation resistance reduces the inertial rotation of the spool during casting, preventing backlash.

[0004]

However, in the centrifugal brake in the above-described conventional structure, for example, even when the rotation of the spool reaches a speed at which the centrifugal force does not act on the brake shoe, the rotation of the spool causes the support pin to face downward, The brake shoe moves up and down with respect to the support pin because it repeats alternating upwards. However, when the support pin is from horizontal to upward, the brake shoe is not in contact with the inner surface of the fixed ring, but when it is from horizontal to downward, the brake shoe is in contact with the inner surface of the fixed ring. And this movement is repeated until the rotation of the spool stops. That is, even when the rotation of the spool is at a speed at which centrifugal force does not act on the brake shoe, in other words, at a rotation speed at which centrifugal force brake does not act, brake braking force acts until the rotation of the spool stops, and Even if the backlash does not occur due to the speed of rotation and the withdrawal of the thread being matched, the braking force continues to act, giving unnecessary resistance to the rotating spool, and it does not fly to the expected distance during casting. There was a flaw.

An object of the present invention is to release the brake braking force at the same time that the rotation of the spool reaches a speed at which the centrifugal force does not act on the brake shoe, in other words, the rotation speed at which the centrifugal force brake does not act, so that the spool becomes On the other hand, the purpose of the present invention is to provide a centrifugal brake for a dual-bearing reel that gives an appropriate amount of brake braking force, eliminates backlash, and can fly to the distance assumed during casting.

[0006]

In order to achieve the above-mentioned object, the present invention has a support pin projecting from a side surface of a spool provided on both bearing reels in parallel with the axis of the spool.
The base portion of the brake shoe formed in the shape of a long piece is rotatably fitted on the support pin, and a fixing ring is attached to the side frame that rotatably supports the spool so as to surround the brake shoe. The circumference is along the rotation path of the brake shoe during spool rotation, and the inner diameter of the fixed ring is the inner diameter with which the tip of the brake shoe comes into contact when the brake shoe rotates due to rotation of the spool, and is further urged toward the spool side. The spring was attached to the side of the spool at one end and to the brake shoe at the other end so that the spring force of this spring was weaker than the centrifugal force acting on the brake shoe at a certain spool rotation speed.

[0007]

According to the above means, the centrifugal force generated by the rotation of the spool acts on the brake shoe, and the brake shoe rotates about the support pin toward the inner circumference of the fixed ring.
The tip of the brake shoe comes into contact with the inner circumference of the fixed ring, and brake braking force is obtained. Normally, the brake shoe is held in a non-contact state with the inner circumference of the fixed ring by the biasing force of the spring, and the spring has a spring force that is weaker than the centrifugal force that acts on the brake shoe at a certain spool rotation speed. When a centrifugal force at a certain spool rotation speed acts on the brake shoe, the brake shoe rotates toward the fixed ring and comes into contact with the inner circumference of the fixed ring, and brake braking force is generated to rotate the spool. At the same time, the rotation of the spool is reduced to a certain speed or less, and at the same time, the brake shoe returns to its original position by the urging force of the spring and becomes in a non-contact state with the inner circumference of the fixed ring, and the brake braking force It is released and there is no resistance to spool rotation.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a double-bearing reel having a centrifugal brake a according to the present invention. The both bearing reels are configured such that the spool 6 is rotatably supported between the left and right side frames 7 and 8, the fixing ring 5 is provided on the side surface of the side frame 7, and the centrifugal brake a is provided on one side of the spool 6. I am doing it.

In the centrifugal brake a, a ring-shaped mounting member 2 is fitted on the side surface of a spool 6, and a support pin 2a is provided on the surface of the mounting member 2 so as to project parallel to the axis of the spool 6. The coil spring 3 is inserted into the support pin 2a in the direction of urging it toward the spool 6, the brake shoe 4 is rotatably inserted through the coil spring 3, and both ends of the coil spring 3 are The other end is fixed to the support pin 2a and the brake shoe 4, respectively.

The coil spring 3 has a spring force that is weaker than the centrifugal force acting on the brake shoe 4 at a certain spool rotation speed, and the brake shoe 4 in the normal state is urged by the coil spring 3 to move inside the fixed ring. When the spool 6 is held in a non-contact state with the circumference 5a and the rotation of the spool 6 exceeds a certain speed, the brake shoe 4 rotates toward the fixed ring 5 and the inner circumference 5a.
When the spool 6 rotates below a certain speed, the brake shoe 4 is rotated to its original position by the urging force of the coil spring 3 and comes into contact with the inner circumference 5a. I am in a state.

When the brake shoe 4 is rotated about the support pin 2a from the base portion 4b toward the tip 4a,
The support ring 2a is formed in a long piece extending in an arc shape having a length such that it contacts the inner circumference 5a of the fixing ring 5, and the base 4b and the tip 4a are semicircular. It is inserted in a direction orthogonal to the above. Further, the shape of the brake shoe 4 may be formed into an elliptical shape or the like as long as it has such a length as to come into contact with the inner circumference 5a of the fixed ring 5 when rotated.

The fixing ring 5 is attached to the side frame 7 so as to surround the brake shoe 4, and the inner circumference 5a of the fixing ring 5 is arranged along the rotation track of the brake shoe 4 during spool rotation and the inner diameter of the fixing ring 5. Is the inner diameter with which the tip 4a of the brake shoe 4 comes into contact when the brake shoe 4 rotates with the rotation of the spool.

The centrifugal brake a is provided with a locking means 1 for the brake shoe 4, and the locking means 1 forms a leaf spring 9 on the support member 2 in an L shape. The short side 9a is inserted into and fixed to the mounting member, and the tip of the long side 9b intersects with the rotation path of the brake shoe 4 about the support pin 2a.

For example, in the above embodiment, the brake shoe 4
There are 4 places, but when casting to a farther place, the braking force may be too strong with the 4 brake shoes, and the intended distance may not be achieved.

However, by providing the locking means 1 for the brake shoe 4 as described above, the brake shoe 4 can be locked and a desired brake braking force can be selected.

To bring the brake shoe 4 into the locked state,
When the brake shoe 4 is rotated by pushing the leaf spring 9 toward the leaf spring 9 with a fingertip, the leaf spring 9 is elastically deformed in the turning direction, and the tip portion 4a of the brake shoe 4 is deformed.
Comes to a certain position, the leaf spring 9 moves to the brake shoe 4
And returns to its original position by elastically surmounting the tip end portion 4a of the plate spring, and the brake shoe 4 is positioned between the leaf spring 9 and the axial center of the spool 6 so that the leaf spring 9 stops the rotation even when a centrifugal force is applied, and is locked. In order to hold and release the locked state, the reverse operation of the above may be performed.

The locking means 1 of the brake shoe 4 is, as shown in FIGS. 6 to 8, the tip portion 4 of the brake shoe 4.
A guide pin 4c is projectingly provided on the back side of the support member 2 toward the support member 2 in parallel with the axis of the support pin 2a, and the support member 2 has a rotation track of the guide pin 4c in the brake shoe 4 about the support pin 2a. A notch 10 is provided on the line, and the notch 1
Two protrusions 10b, 10b facing the inner surface of 0 are projected, and the edge 10c of the notch 10 and the protrusion 10 are provided.
The space 10a between the guide pins 4c and 10b is formed so as to be wider than the diameter of the guide pin 4c.
May be engaged.

In order to bring the brake shoe 4 into the locked state by the above-mentioned locking means, the guide pin 4c of the brake shoe 4 is moved along the cutout portion 10 with a fingertip and the edge portion 1 of the cutout portion 10 is cut.
It is rotated toward 0c and pushed in so as to get over the protrusions 10b, 10b, so that the edge portion 10c and the protrusion 10b,
The guide pin 4c of the brake shoe 4 is positioned in the space 10a of 10b so that the protrusion 10b,
In order to stop the rotation by 10b to maintain the locked state and release the locked state, the reverse operation of the above may be performed.

[0019]

According to the centrifugal brake of the double-bearing reel of the present invention, the centrifugal force due to the rotation of the spool is applied to the brake shoe by the structure of claim 1, and the brake shoe is directed toward the inner circumference of the fixed ring with the support pin as the center. Since the brake shoe rotates, the tip of the brake shoe comes into contact with the inner circumference of the fixed ring and a braking force is obtained, so that back crash can be prevented.

Normally, the brake shoe is held in a non-contact state with the inner circumference of the fixed ring by the urging force of the spring, and the spring has a spring force weaker than the centrifugal force acting on the brake shoe at a certain spool rotation speed. Therefore, when a centrifugal force at a certain spool rotation speed acts on the brake shoe, the brake shoe rotates toward the fixed ring and comes into contact with the inner circumference of the fixed ring, generating brake braking force. The rotation of the brake is reduced, and the rotation of the spool is reduced to a certain speed or less. As the braking force is released and there is no resistance to spool rotation, it was assumed when casting Fly to away.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a dual bearing reel including a centrifugal brake according to the present invention.

2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is a partially cutaway view showing an enlarged view of arrow B in FIG.

4 is an enlarged view of an essential part of FIG. 2, showing a state in which a leaf spring is deformed by a brake shoe.

5 is an enlarged cross-sectional view taken along the line AA of FIG. 1 showing a state where the brake shoe is partially locked by a leaf spring.

FIG. 6 is an enlarged view of essential parts showing another embodiment of the locking means.

7 is a sectional view taken along line CC of FIG.

FIG. 8 is an enlarged view of an essential part showing a state where the brake shoes are locked.

FIG. 9 is a sectional view showing the structure of a conventional centrifugal brake.

[Explanation of symbols]

 a ... Centrifugal brake 2a ... Support pin 3 ... Coil spring 4 ... Brake shoe 5 ... Fixing ring 6 ... Spool

Claims (1)

[Claims] 1. A support pin is provided on a side surface of a spool included in a dual bearing reel in parallel with an axis of the spool, and a base portion of a brake shoe formed in a long piece is rotatably fitted to the support pin. A fixing ring is attached to the side frame that rotatably supports the spool so as to surround the brake shoe, and the inner circumference of the fixing ring is along the rotation path of the brake shoe when the spool rotates and the inner diameter of the fixing ring is The inner diameter is such that the tip of the brake shoe comes into contact when the brake shoe rotates with the rotation of the spool.
A spring that biases the spool is attached to the side of the spool at one end and to the brake shoe at the other end, and the spring force of this spring is weaker than the centrifugal force acting on the brake shoe at a certain spool rotation speed. Centrifugal force braking device for dual bearing reels that uses spring force.