Drag adjustment mechanism of a double-bearing reel

Abstract

By pressing down the drag lever, the clutch is instantly engaged, allowing the line to be reeled in. [Solution] The drag adjustment mechanism switches between a drag-free state and a drag-operated state by rotating the spool shaft 13 around its axis by swinging the drag lever 37, and changing the pressure contact state between the friction disc 23, which is linked to the spool 11, and the clutch disc 25, which rotates by the handle operation, via a cam mechanism. The projection 47 moves from the neutral (FREE) position of the cam surface 36 of the cam part 35 to the endpoint position 2 (STRIKE) when the drag lever 37 is lowered to its limit. Also, when the drag lever 37 is raised, it moves from the intermediate position (STRIKE) to the endpoint position 1 (MAX). The drag force is ineffective at the neutral (FREE) position and is at its maximum at the endpoint position 1 (MAX). In this way, the drag force can be applied even when the drag lever 37 is pushed down.

Description

Technical Field

[0005] , ,

[0001] The present invention relates to a two-bearing type reel.

Background Art

[0002] A handle is rotatably supported on the reel body of the two-bearing type reel. When the clutch is connected, the spool rotates by operating the handle and the thread is wound up. When the connection of the clutch is released, the spool becomes rotation-free and it is possible to release the thread. This type does not have an independent clutch, and the role of the clutch is played by the drag. That is, in this type, both the adjustment of the drag and the switching of the clutch are performed by operating a single lever.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Conventionally, by lifting the lever, the spool is switched from the rotation-free state to the drag operating state. It is difficult to immediately lift the lever with the hand holding the two-bearing type reel. Moreover, some people cannot lift the lever with the hand holding the two-bearing type reel and lift the lever with the other hand. In that case, the timing of lifting the lever will be further delayed.

[0005] The present invention has been made paying attention to the above conventional problems, and an object thereof is to provide a novel and useful drag adjustment mechanism for a two-bearing type reel that enables switching the spool from the rotation-free state to the drag operating state even by an operation of pushing down the lever. [Means for solving the problem]

[0006] The present invention relates to a drag adjustment mechanism for a double-bearing type reel that rotates the spool shaft around an axis by swinging the drag lever, and switches between a drag-released state and a drag-operated state by changing the pressure contact state between a friction disc that is linked to the spool and a clutch disc that rotates by handle operation via a cam mechanism, wherein the cam mechanism consists of a cam surface formed on the axial end face of the cam part and a cam follower that is pressed against the cam surface so as to be relatively movable, and the cam surface has positions formed on both sides of the position where the drag is released, with the drag-operated state being achieved by operating the drag lever, by changing the axial height, and the positions where the drag is operated are located on the lifting side and the pushing-down side of the drag lever.

[0007] Preferably, the drag release position on the cam surface is formed closer to the downward-pushing end position between the end position of the drag operation state where the drag lever is lifted and the end position of the drag operation state where it is pushed down. Preferably, the cam surface is formed such that the drag force at an intermediate position before reaching the end position of the drag operation state on the lifting side of the drag lever is the same as the drag force at the end position of the drag operation state on the pushing side, and the drag force at the end position of the lifting drag operation state is maximized. Preferably, the cam follower of the cam mechanism is composed of a pair of projections that are facing each other in the radial direction. [Effects of the Invention]

[0008] In the double-bearing reel equipped with the drag adjustment mechanism of the present invention, the spool can be switched from a free-rotating state to a drag-operated state not only by lifting the lever, but also by pushing it down. This makes it possible to instantly engage the clutch and bring the line into a state where it can be wound up. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view of a double-bearing type reel according to an embodiment of the present invention. [Figure 2] Figure 1 is a side view of a double-bearing type reel. [Figure 3] Figure 1 is an exploded perspective view of a double-bearing type reel. [Figure 4] Figure 1 is a cross-sectional view of the double-bearing type reel in the clutch release state (neutral (FREE) position). [Figure 5] Figure 4 shows the cam curve development diagram, which is obtained by linearly unfolding the arc-shaped cam surface, and the relationship between this and the position change of the drag lever. [Figure 6] This is a conventional relationship diagram compared to Figure 5. [Figure 7] Figure 5 is a cross-sectional view of a double-bearing reel, corresponding to the positional change of the drag lever. [Figure 8] This is a perspective view showing the positional change of the drag lever in the double-bearing reel shown in Figure 1, corresponding to Figure 7. [Modes for carrying out the invention]

[0010] A double-bearing type reel 1 according to an embodiment of the present invention will be described with reference to the drawings. First, the configuration of the double-bearing reel 1 will be explained according to Figures 1 to 4. The reel body 3 of the double-bearing type reel 1 consists of a frame 5 and a side cover 9. Frame 5 is a bottomed, coaxial cylindrical body, consisting of a disc-shaped bottom portion 5a and a frame-shaped side portion 5b, with a coaxial cylindrical boss 5c protruding inward from the center of the inner bottom surface of the bottom portion 5a. The stand 7 is attached to the side section 5b by tightening the stand screw. The side cover 9 is disc-shaped, and the reel body 3 is integrated with the frame 5 by tightening the side cover 9, with the opening side of the frame 5 being closed off.

[0011] The spool 11 is located inside the frame 5 side of the reel body 3. The spool 11 is almost cylindrical and extends straight in the axial direction, with both ends flaring out in a flange-like manner, and the end faces are flange surfaces 11a, 11a. A short cylindrical surface 11b is attached to the outer edge of the flange surface 11a, and together with the flange surface 11a, it forms a shallow concave surface. The spool 11 is mounted on the spool shaft 13 so as to be rotatable around the shaft and movable in the axial direction via bearing collars 15 and ball bearings 17, 17. On one axial side of the spool shaft 13, a pair of disc springs 21, 21 are inserted between a pair of spring collars 19, 19. One end of the spool shaft 13 is widened by a step to be approximately the same diameter as the spring collars 19, and the axial movement of the spool 11 relative to the spool shaft 13 in one direction is restricted by this step. One end of the spool shaft 13 is fitted into a boss 5c on the bottom surface 5a of the frame 5 so as to be axially movable.

[0012] An annular friction disc 23 is attached to the flange surface 11a of the spool 11, which is located on the axial side of the spool shaft 13, and is configured to move in conjunction with the spool 11. This friction disc 23 is housed within a concave surface. The friction engagement surface of the disc-shaped clutch disc 25 faces the exposed surface of the friction disc 23. The clutch disc 25 is mounted on the spool shaft 13 via a ball bearing 27 so as to be rotatable around the shaft and movable in the axial direction. A coil spring 29 is wound around the spool shaft 13 between the ball bearing 17 on the friction disc 23 side and the ball bearing 27 on the clutch disc 25 side.

[0013] Around the spool shaft insertion hole of the clutch disc 25, hexagonal engagement holes are formed on the surface opposite to the friction engagement surface. On the other axial side of the clutch disc 25, a pinion gear 31 is attached to the spool shaft 13 so as to be rotatable around the axis and movable in the axial direction. One axial end side of this pinion gear 31 is fitted and engaged with the engagement hole. By this engagement, the pinion gear 31 and the clutch disc 25 are integrated and linked both in rotation around the axis and in movement in the axial direction. A through hole is formed at the center of the side cover 9, and the other end of the spool shaft 13 protruding from the pinion gear 31 is supported in a both-end manner so as to be rotatable around the axis and movable in the axial direction with respect to the reel body 3 via a ball bearing 33.

[0014] On the outer surface of the side cover 9, a cylindrical cam portion 35 is attached coaxially surrounding the through hole and projects toward the outer side in the axial direction of the reel body 3. As shown in FIG. 5, a cam surface 36 is formed on the edge surface at the tip of the protruding direction of this cam portion 35. The entire circumference of the edge surface protrudes relatively with a 1 / 4 arc contour and is divided into two by a regulating protrusion. Two sets of cam surfaces 36, 36 are provided in a rotationally symmetric arrangement with the 1 / 4 arc contour 36a of the regulating protrusion as a boundary. The height of the cam portion 35 in the protruding direction is changed to form an uneven cam surface 36.

[0015] Hereinafter, description will be made focusing on one of the cam surfaces 36. On the cam surface 36, a 1 / 2 arc contour is formed and recessed near the contour 36a of one of the regulating protrusions. And between the one 1 / 4 arc and the 1 / 2 arc, they are smoothly connected by a curve. Also, between the other 1 / 4 arc and the 1 / 2 arc, the other 1 / 4 arc side and the 1 / 2 arc side are curves, and the space between the curves is an inclined line and is smoothly connected. This inclined line extends so that the degree of concavity becomes shallower as it goes from the 1 / 2 arc toward the other 1 / 4 arc. Also, due to the relationship that the interval becomes smaller, the curve between the one 1 / 4 arc and the 1 / 2 arc has a steeper gradient than the other curves.

[0016] Reference numeral 37 indicates the drag lever. This drag lever 37 consists of a mounting portion 39 with a through hole that is attached to the other axial end of the spool shaft 13, which protrudes outward from the through hole in the side cover 9, so as to be unable to rotate relative to the shaft, an arm 41 extending radially from the mounting portion 39, and an operating portion 43 provided at the tip of the arm 41. When the drag lever 37 is rotated, the spool shaft 13 swings relative to the reel body 3. The mounting portion 39 has a circular concave shape, and the edge of the through hole through which the spool shaft 13 is inserted rises within the concave surface. An annular cam riser 45 is fitted inside, surrounding this through hole. A pair of projections (cam followers) 47, 47 protrude from the annular base of the cam riser 45. These projections 47, 47 face each other radially within the concave surface. The projections 47 are tongue-shaped with hemispherical ends, with the hemispherical ends facing the opening side of the concave surface.

[0017] A plunger 49 is attached to the underside of the arm 41. The drag lever 37 is mounted on the spool shaft 13 with its projections 47, 47 facing the cam surfaces 36, 36. The operating section 43 is along the outer circumference of the side cover 9, and the plunger 49 protrudes from the outer surface of the side cover 9 so as to be able to move back and forth.

[0018] Reference numeral 51 indicates a preset knob, with a screw shaft 51b protruding from the center of the disc 51a. A screw hole is formed at the other end of the spool shaft 13, and it is screwed into the screw hole of the spool shaft 13. This tightening causes the (spool 11 to friction disc 23) and (clutch disc 25 to pinion gear 31 to reel body 3 to cam mechanism (cam section 35, cam riser 45) to the mounting section 39 of the drag lever 37) to be aligned in a line along the axial direction of the spool shaft 13 via the coil spring 29, and biased to move away from each other. The projections 47, 47 on the drag lever 37 side are movably pressed against the cam surface 36 of the cam section 35.

[0019] As shown in Figures 5, 7, and 8, when the drag lever 37 is oscillated, the spool shaft 13 rotates around its axis, and consequently the projections 47, 47 also move in a circular orbit, so the contact position on the cam surface 36 is changed.

[0020] The projection 47 reaches its endpoint when it presses against the quarter-circle arcs on both sides of the cam surface 36, and the position of contact between the cam surface 36 and the projection 47 changes between these two endpoint positions. When the projection 47 presses against the cam surface 36 so as to fit into the half-circle arc, the relative protrusion of the projection 47 is maximized. This contact position is defined as the neutral (FREE) position. Then, when the projection 47 is pressed against the contour 36a on the side closer to the half-circle arc, the relative amount of protrusion of the projection 47 decreases. This pressed-again position is defined as the endpoint position 2 (STRIKE) position. Furthermore, when the projection 47 is pressed against the other contour 36a so as to fit into it, the relative protrusion of the projection 47 becomes minimal. This pressed-again position is defined as the endpoint position 1 (MAX). When the projection 47 is pressed against an intermediate inclined surface, the relative protrusion amount of the projection 47 becomes the same as that of the endpoint position 2 (STRIKE). This contact position is defined as the intermediate position (STRIKE).

[0021] When pressed together in the neutral (FREE) position, the biasing force of the coil spring 29 causes the (spool 11 to friction disc 23) and (clutch disc 25 to pinion gear 31 to reel body 3 to cam mechanism (cam section 35, cam riser 45)) to separate. In other words, the friction disc 23 and the clutch disc 25 separate, and the spool 11 becomes free to rotate. Furthermore, when pressure is applied at positions other than the neutral (FREE) position, including the intermediate position (STRIKE), the final position 1 (MAX), and the final position 2 (STRIKE), the spool (11 to friction disc 23) and the clutch disc 25 (pinion gear 31 to reel body 3 to cam mechanism (cam section 35, cam riser 45) move closer together against the biasing force of the coil spring 29, and the friction disc 23 and the clutch disc 25 enter a pressure contact state, i.e., a clutch engagement state.

[0022] Starting from the neutral (FREE) position, lowering the Drag Lever 37 to its limit will bring it to the final position 2 (STRIKE). Raising the Drag Lever 37 will also bring it to the intermediate position (STRIKE), and raising it further to its limit will bring it to the final position 1 (MAX). Since the drag force is proportional to the pressure force, the drag force is ineffective in the neutral (FREE) position and is at its maximum in the final position 1 (MAX). Even by pushing down the drag lever 37 in this way, you can still apply drag force. The drag force is about the same as in the intermediate position (STRIKE) due to the limits of the drum lever 37's swing range, but it is sufficient for instantaneous switching. After that, by turning the lever operation to lift the drag lever 37 and bringing it to the final position 1 (MAX), you can maximize the drag force.

[0023] The drag mechanism consists of a friction disc 23, a clutch disc 25, a cam mechanism (cam section 35, cam riser 45), a drag lever 37, and various components that link them together, thereby achieving both drag adjustment and clutch switching functions as described above. Furthermore, by turning the preset knob 51, the pressure acting between the cam surface 36 of the cam section 35 and the projection 47 can be changed, thus allowing for adjustment of the drag force.

[0024] On the inner surface of the recess of the side cover 9, there is a further recess, forming a gourd-shaped recess surrounding the through hole, and the drive gear 53 is fitted into the large circular side. A gear shaft 55 is attached to this drive gear 53. A handle arm 59 is attached to the side cover 9 as a handle mechanism 57 using various parts (washer 57a, housing 57b, packing 57c, washer 57d, cap 57e, washer 57f, handle lock nut 57g, lock nut screw 57h), and a handle knob 61 is attached to the handle arm 59 using various parts (knob shaft screw 57i, knob shaft 57j, sleeve 57k, O-ring 57l, flat washer 57m, sleeve screw 57n). Furthermore, a one-way clutch (not shown) is located inside the housing 57b, restricting the direction in which the handle knob 61 can be turned to be only in the winding direction of the spool 11.

[0025] When the handle knob 61 is turned, the drive gear 53 rotates, and the pinion gear 31 rotates along with the clutch disc 25. However, when the contact position between the clutch disc 25 and the friction disc 23 is in the neutral (FREE) position, the rotational force from the handle is not transmitted to the spool 11, and the spool 11 is in a state where it can rotate freely, that is, the drag is released. On the other hand, at the intermediate position (STRIKE), the final position 1 (MAX), and the final position 2 (STRIKE), the drag is engaged, and the rotational force from the handle is transmitted to the spool 11, which then brakes its rotation. The rotation of the spool 11 is also braked on the inclined surface surrounding the intermediate position (STRIKE). The drag force is changed depending on the contact position.

[0026] The double-bearing reel 1 is configured as described above, and by pushing down the drag lever 37 from the neutral (FREE) position, the spool 11 can be switched from a free-rotating state to a drag-operated state. Therefore, by pushing down the drag lever 37 with one hand holding the double-bearing reel 1, it is possible to switch instantly. Furthermore, the preset knob 51 has a drag adjustment function. Figure 6 shows an example of a conventional cam surface 101. With this conventional cam surface 101, the drag force is not applied even when the drag lever 37 is pressed down. In contrast to this cam surface 101, the cam surface 36 in Figure 5 is characterized by having a cutout near the neutral (FREE) position to create an endpoint position 2 (STRIKE). Therefore, it can be manufactured using the existing drag mechanism as is.

[0027] Although embodiments of the present invention have been described in detail above, the specific configuration is not limited to these embodiments, and any design changes or other modifications that do not depart from the spirit of the invention are also included in the invention. For example, in various parts, washer 57d is used when the handle lock nut 57g and lock nut screw 57h are not in the correct position. Not all parts as indicated in this way are used. Furthermore, the shape of the reel body 3, the configuration of the drag mechanism and handle mechanism 57, and the shape of the various parts and their connection specifications are not limited, as long as the intended functions are realized. [Explanation of symbols]

[0028] 1...Double bearing type reel 3...Reel body 5...Frame 5a...Bottom 5b...Side section 5c...Boss 7...stand 9...side cover 11...Spool 11a...Flange surface 11b...Cylindrical surface 13...Spool shaft 15…Bearing collar 17…Ball bearing 19...Spring color 21...Disc spring 23... Friction disc 25... Clutch disc 27...Ball bearing 29...Coil spring 31...Pinion gear 33...Ball bearing 35...Cam section 36...Cam surface 36a…Outline 37…Drag Lever 39... Mounting part 41... Arm 43...Operation unit 45...Cam riser 47…Protrusion (cam follower) 49...Plunger 51...Preset knob 51a...Disc 51b...Screw shaft 53...Drive gear 55...Gear shaft 57...Handle mechanism 57a...Washer 57b...Housing 57c...Gasket 57d...Washer 57e...Cap 57f...Washer 57g...Handle lock nut 57h... Lock nut screw 57i… Knob shaft screw 57j... Knob shaft 57k... Sleeve 57l…O-ring 57m…Flat washer 57n...Sleeve Screw 59...Handle arm 61...Handle knob 101... Cam surface

Claims

1. In a drag adjustment mechanism for a double-bearing reel, the spool shaft is rotated around its axis by the swinging operation of the drag lever, and the pressure contact state between the friction disc, which is linked to the spool, and the clutch disc, which rotates by the handle operation, is changed via a cam mechanism to switch between a drag-released state and a drag-operated state. The cam mechanism consists of a cam surface formed on the axial end face of the cam portion and a cam follower that is pressed against the cam surface so as to be movable relative to it. The drag adjustment mechanism is characterized in that the cam surface has a axial height that is varied so that a position where the drag is released is flanked by the operation of the drag lever, and positions where the drag is activated are formed on both sides of the position where the drag is released, and the positions where the drag is activated are located on the lifting side and the pushing down side of the drag lever.

2. In the drag adjustment mechanism of the double-bearing type reel described in claim 1, A drag adjustment mechanism characterized in that the drag release position on the cam surface is formed closer to the end position of the drag operation state that is on the pushing side, between the end position of the drag operation state that is on the lifting side of the drag lever and the end position of the drag operation state that is on the pushing side.

3. In the drag adjustment mechanism for a double-bearing type reel as described in claim 1 or 2, A drag adjustment mechanism characterized in that the drag force at an intermediate position before reaching the end position of the drag operation state on the lifting side of the drag lever is the same as the drag force at the end position of the drag operation state on the pushing side, and the cam surface is formed such that the drag force at the end position of the lifting drag operation state is maximized.

4. In the drag adjustment mechanism for a double-bearing type reel described in claim 3, A drag adjustment mechanism characterized in that the cam follower of the cam mechanism is composed of a pair of projections arranged radially opposite each other.

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