Spinning reel

Abstract

To provide a spinning reel in which a worm shaft gear that constitutes a torque-limiting mechanism can be made smaller in size.SOLUTION: A spinning reel 1 includes a reel body 3, a spool shaft 15, an oscillating mechanism 21, and a torque-limiting mechanism 34. The torque-limiting mechanism 34 includes a worm shaft 23, a worm shaft gear 27, and a torsion spring 35. The torsion spring 35 is disposed between the worm shaft 23 and the worm shaft gear 27. The torsion spring 35 generates a frictional force in a circumferential direction by contacting the worm shaft 23. The torsion spring 35 permits or cancels transmission of torque from the worm shaft gear 27 to the worm shaft 23 by the frictional force.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a spinning reel. [Background technology]

[0002] A conventional spinning reel includes a reel body, a spool shaft, a reciprocating mechanism, and a torque limiting structure (see Patent Document 1). The reciprocating mechanism has a slider attached to the spool shaft and a worm shaft that rotates to move the spool shaft and slider back and forth.

[0003] The torque limiting structure includes a worm shaft, a worm shaft gear rotatably supported on the worm shaft, a plurality of locking recesses, a pin member, and a biasing member. The plurality of locking recesses are formed on an inner peripheral surface of the worm shaft gear.

[0004] The pin member and the biasing member are disposed on the worm shaft. The pin member is disposed facing the inner peripheral surface of the worm shaft gear. The biasing member biases the pin member toward the inner peripheral surface of the worm shaft gear.

[0005] When the head of the pin member is engaged with one of the multiple locking recesses, the torque of the worm shaft gear is transmitted to the worm shaft. On the other hand, when the torque of the worm shaft gear exceeds the allowable torque, the pin member repeatedly engages and disengages with the multiple locking recesses, causing the worm shaft gear to rotate intermittently relative to the worm shaft. In this state, the torque of the worm shaft gear is not transmitted to the worm shaft. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-136917 Summary of the Invention [Problem to be solved by the invention]

[0007] In the conventional torque limiting structure, the allowable torque can be increased by locking the pin member in the locking recess. In this way, when the torque acting on the worm shaft gear is large and the torque of the worm shaft gear exceeds the allowable torque, the worm shaft gear rotates intermittently relative to the worm shaft gear.

[0008] In this case, the worm shaft gear needs to withstand the impacts that occur during this intermittent operation, so the strength of the worm shaft gear needs to be ensured. In other words, with the conventional torque limiting structure, there is a problem in that the worm shaft gear becomes large in size.

[0009] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a spinning reel in which the worm shaft gear that constitutes the torque limiting structure can be made smaller. [Means for solving the problem]

[0010] A spinning reel according to one aspect of the present invention includes a reel body, a spool shaft, a reciprocating mechanism, and a torque limiting structure. The spool shaft is supported by the reel body. The reciprocating mechanism has a slider attached to the spool shaft and a worm shaft that rotates to reciprocate the spool shaft and slider in the axial direction.

[0011] The torque limiting structure includes a worm shaft, a worm shaft gear, and a friction force generating member. The worm shaft gear is rotatably supported on the worm shaft. The friction force generating member is disposed between the worm shaft and the worm shaft gear. The friction force generating member generates a friction force in the circumferential direction by contacting at least one of the worm shaft and the worm shaft gear. The friction force generating member allows or disables torque transmission from the worm shaft gear to the worm shaft.

[0012] In this spinning reel, when the torque of the worm shaft gear is equal to or less than the allowable torque, frictional force is generated in the circumferential direction between the frictional force generating member and at least one of the worm shaft and the worm shaft gear. In this state, when the torque of the worm shaft gear exceeds the allowable torque, the worm shaft gear rotates continuously relative to the worm shaft.

[0013] Therefore, in this spinning reel, the worm shaft gear that constitutes the torque limiting structure can be made smaller than the worm shaft gear that rotates intermittently relative to the worm shaft as in conventional technology.

[0014] In a spinning reel according to another aspect of the present invention, the frictional force generating member is preferably engaged with the worm shaft gear. In this case, the frictional force generating member is a torsion spring slidably disposed on the outer peripheral surface of the worm shaft. This configuration allows for stable generation of frictional force between the frictional force generating member and the worm shaft.

[0015] In a spinning reel according to another aspect of the present invention, the torsion spring preferably has a first spring portion wound in a first winding direction, in which case the first spring portion is disposed on the outer peripheral surface of the worm shaft so that the first winding direction is opposite to the fishing line winding direction of the worm shaft gear.

[0016] With this configuration, when the worm shaft gear rotates in the fishing line winding direction, the first spring portion of the torsion spring tightens, so torque can be suitably transmitted from the worm shaft gear to the worm shaft.

[0017] In a spinning reel according to another aspect of the present invention, it is preferable that the torsion spring further includes a second spring portion wound in a second winding direction opposite to the first winding direction. In this case, the second spring portion is connected to the first spring portion. The second spring portion is disposed on the outer peripheral surface of the worm shaft so that the second winding direction is the same as the fishing line winding direction of the worm shaft gear.

[0018] If an external force acts on the spool shaft in the direction opposite to the direction in which the spool shaft moves, the worm shaft gear rotates in the direction opposite to the fishing line winding direction. In this case, there is a risk that the first spring portion will loosen. However, by connecting the second spring portion to the first spring portion, the second spring portion can prevent the first spring portion from loosening, even if the worm shaft gear rotates in the direction opposite to the fishing line winding direction.

[0019] In a spinning reel according to another aspect of the present invention, the worm shaft gear preferably has a hole extending in the axial direction. In this case, the torsion spring has a locking portion that is locked in the hole. With this configuration, the torsion spring can be suitably locked to the worm shaft gear.

[0020] In a spinning reel according to another aspect of the present invention, the locking portion preferably has an insertion portion that is inserted into the hole and a claw portion that extends from the insertion portion along a side surface of the worm shaft gear. This configuration allows the torsion spring to be more appropriately locked to the worm shaft gear.

[0021] In a spinning reel according to another aspect of the present invention, the worm shaft gear preferably has a protrusion that protrudes in the axial direction. In this case, the torsion spring has a locking portion that locks onto the protrusion. With this configuration, the torsion spring can be suitably locked to the worm shaft gear.

[0022] In a spinning reel according to another aspect of the present invention, the worm shaft gear preferably has an insertion hole through which the worm shaft is inserted. In this case, the torque limiting structure further has an O-ring disposed between the outer peripheral surface of the worm shaft and the inner peripheral surface of the insertion hole.

[0023] In this configuration, by disposing an O-ring between the outer peripheral surface of the worm shaft and the inner peripheral surface of the insertion hole, the O-ring can assist in preventing the first spring portion from loosening. [Effects of the Invention]

[0024] According to the present invention, the worm shaft gear in a spinning reel can be made smaller. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a side view of a spinning reel according to an embodiment of the present invention. [Figure 2] FIG. 1 is a side view of a spinning reel with the side cover and main body guard removed. [Figure 3] FIG. 2 is an exploded perspective view illustrating an oscillating mechanism. [Figure 4A] Side view (rear) of the worm shaft gear. [Figure 4B] Side view (front) of a worm shaft gear. [Figure 5] FIG. [Figure 6] FIG. 4 is an exploded perspective view illustrating a torque limiting structure. [Figure 7] FIG. 10 is a perspective view of a torsion spring according to a modified example (A). [Figure 8] FIG. 10 is a side view of the torque limiting structure of the modified example (B). [Figure 9] FIG. 10 is a side view of the torque limiting structure of the modified example (C). [Figure 10] FIG. 10 is a side view of the torque limiting structure of modified example (D). DETAILED DESCRIPTION OF THE INVENTION

[0026] As shown in Figure 1, a spinning reel 1 embodying one embodiment of the present invention includes a reel body 3, a handle 5, a spool 7, and a rotor 9. As shown in Figure 2, the spinning reel 1 further includes a handle shaft 11, a drive gear 13, a spool shaft 15, a pinion gear 17, a speed reduction mechanism 19, an oscillating mechanism 21, and a torque limiting structure 34 (see Figure 6). Note that Figure 2 shows the spinning reel 1 shown in Figure 1 with the side cover 1a and body guard 1b removed.

[0027] As shown in FIG. 1 , the handle 5 is rotatably supported on the reel body 3. In this embodiment, the handle 5 is disposed on the left side of the reel body 3. The handle 5 may also be disposed on the right side of the reel body 3. The handle 5 is attached to a handle shaft 11.

[0028] 2, the handle shaft 11 is rotatably supported by the reel body 3. The drive gear 13 is attached to the handle shaft 11 so as to be rotatable integrally with the handle shaft 11. The drive gear 13 meshes with a pinion gear 17.

[0029] Fishing line is wound around the spool 7. As shown in FIG. 2, the spool 7 is configured to be movable back and forth relative to the reel body 3 together with the spool shaft 15. The spool 7 is connected to the spool shaft 15. For example, the spool 7 is connected to the tip of the spool shaft 15 via a drag mechanism (not shown). When the spool 7 is connected to the spool shaft 15, the central axis of the spool 7 is coaxial with the spool axis X1 (described later).

[0030] As shown in Figure 2, the spool shaft 15 is supported so as to be movable in the front-to-rear direction relative to the reel body 3. The spool shaft 15 is inserted into the inner periphery of a cylindrical pinion gear 17. The spool shaft 15 moves back and forth in the front-to-rear direction relative to the reel body 3 by operation of the oscillating mechanism 21.

[0031] The spool shaft 15 has a spool axis X1. The front-to-rear direction is the direction in which the spool axis X1 extends. Unless otherwise specified, the axial direction is the direction in which the spool axis X1 extends. The radial direction is the direction away from the spool axis X1. The circumferential direction and rotational direction are directions around the spool axis X1.

[0032] The oscillating mechanism 21 moves the spool shaft 15 back and forth in response to the rotation of the handle shaft 11. The oscillating mechanism 21 is disposed in the internal space of the reel body 3. As shown in FIGS. 2 and 3, the oscillating mechanism 21 includes a worm shaft 23, a slider 25, and a worm shaft gear 27.

[0033] The worm shaft 23 rotates to move the spool shaft 15 and the slider 25 in the front-to-rear direction. The worm shaft 23 is disposed parallel to the spool shaft 15. The worm shaft 23 is rotatably supported by the reel body 3. The worm shaft 23 has a rotation axis W1.

[0034] The worm shaft 23 has a shaft body 23a, a groove 23b, and a spring arrangement portion 23c. The shaft body 23a is a shaft member that is long in one direction. The shaft body 23a extends in the axial direction in which the rotation axis W1 extends. The groove 23b is provided on the outer peripheral surface of the shaft body 23a. A pawl member 26, which will be described later, engages with the groove 23b.

[0035] A torsion spring 35 (described later) of the torque limiting structure 34 is disposed in spring disposition portion 23c. Spring disposition portion 23c is formed in a cylindrical shape. Spring disposition portion 23c is provided on shaft body 23a so as to be adjacent to groove portion 23b in the axial direction in which rotation axis W1 extends.

[0036] The slider 25 is attached to the spool shaft 15. For example, the slider 25 is fixed to the rear end of the spool shaft 15. The slider 25 moves back and forth as the worm shaft 23 rotates.

[0037] For example, as shown in Figure 3, a pawl member 26 is attached to the slider 25. The pawl member 26 is rotatably attached to the spool shaft 15 and the slider 25. The pawl member 26 engages with the groove portion 23b of the worm shaft 23. As a result, when the worm shaft 23 rotates, the pawl member 26 moves along the groove portion 23b of the worm shaft 23. As a result, the slider 25 moves in the front-rear direction.

[0038] 2 and 3, the worm shaft gear 27 is disposed on the worm shaft 23. The worm shaft gear 27 is rotatably supported on the worm shaft 23. Hereinafter, the direction in which the worm shaft gear 27 rotates when the fishing line is being wound is referred to as the fishing line winding direction R1.

[0039] The worm shaft gear 27 has a rotation axis W2. For example, the worm shaft gear 27 is disposed on the worm shaft 23 so that the rotation axis W2 of the worm shaft gear 27 is concentric with the rotation axis W1 of the worm shaft 23.

[0040] As shown in Figures 3, 4A, and 4B, the worm shaft gear 27 has a gear body 27a, an annular protrusion 27b, an insertion hole 27c, an annular step portion 27d, at least one locking hole 27e (an example of a hole portion), and at least one guide groove 27f.

[0041] The gear body 27a is formed in a disk shape. The gear body 27a meshes with a second small-diameter gear 33b (described later) of the reduction mechanism 19. As shown in Fig. 4B, the annular protrusion 27b protrudes annularly from the outer periphery of the gear body 27a in the axial direction in which the rotation axis W2 of the worm shaft gear 27 extends.

[0042] 3, 4A, and 4B, the insertion hole 27c is provided in the gear body 27a. For example, the insertion hole 27c penetrates the gear body 27a in the axial direction in which the rotation axis W2 of the worm shaft gear 27 extends. The worm shaft 23 is inserted into the insertion hole 27c.

[0043] 3 and 4A, the annular step portion 27d is provided on the inner peripheral portion of the gear body 27a. The annular step portion 27d is provided outside the insertion hole 27c in the radial direction about the rotational axis W2 of the worm shaft gear 27. The annular step portion 27d extends in the circumferential direction about the rotational axis W2 of the worm shaft gear 27.

[0044] The at least one locking hole 27e includes a plurality of locking holes 27e. In this embodiment, a plurality of (e.g., three) locking holes 27e are provided on the outer periphery of the gear body 27a. The plurality of locking holes 27e are arranged at intervals from one another in the circumferential direction about the rotational axis W2 of the worm shaft gear 27. The plurality of locking holes 27e penetrate the gear body 27a in the axial direction in which the rotational axis W2 of the worm shaft gear 27 extends. As shown in FIG. 4B, the plurality of locking holes 27e are arranged radially inward of the annular protrusion 27b.

[0045] 3 and 4A, the at least one guide groove 27f includes a plurality of (e.g., three) guide grooves 27f. In this embodiment, the plurality of (e.g., three) guide grooves 27f are provided in the gear body 27a. For example, the plurality of guide grooves 27f are arranged at intervals from one another in the circumferential direction about the rotational axis W2 of the worm shaft gear 27. The plurality of guide grooves 27f extend separately from the annular step portion 27d toward the plurality of locking holes 27e.

[0046] As shown in Figure 2, the pinion gear 17 is formed in a cylindrical shape. The pinion gear 17 is rotatably supported by the reel body 3. The pinion gear 17 is disposed radially outward of the spool shaft 15. The pinion gear 17 rotates relative to the spool shaft 15. The pinion gear 17 rotates around the spool axis X1.

[0047] As shown in Fig. 5, the reduction mechanism 19 reduces the rotation speed of the pinion gear 17 and transmits the reduced rotation speed to the oscillating mechanism 21. Gear teeth of each gear are omitted in Fig. 5. The reduction mechanism 19 is disposed between the pinion gear 17 and the oscillating mechanism 21. For example, the reduction mechanism 19 is disposed between the pinion gear 17 and the worm shaft gear 27.

[0048] The reduction gear mechanism 19 has at least two intermediate gears 31, 33. For example, the reduction gear mechanism 19 has a first intermediate gear 31 and a second intermediate gear 33. The first intermediate gear 31 is rotatably mounted around a first axis A1 parallel to the spool axis X1. The first intermediate gear 31 is rotatably supported by the reel body 3. The first intermediate gear 31 has a first large diameter gear 31a and a first small diameter gear 31b.

[0049] The first large diameter gear 31a meshes with the pinion gear 17. The rotation axis of the first large diameter gear 31a is the first axis A1. The first small diameter gear 31b is formed to have a smaller diameter than the first large diameter gear 31a. The first small diameter gear 31b is formed integrally with the first large diameter gear 31a and rotates integrally with the first large diameter gear 31a. The rotation axis of the first small diameter gear 31b is the first axis A1.

[0050] The second intermediate gear 33 is rotatably provided about a second axis A2 parallel to the first axis A1. The second intermediate gear 33 is rotatably supported by the reel body 3. The second intermediate gear 33 has a second large diameter gear 33a and a second small diameter gear 33b.

[0051] The second large diameter gear 33a meshes with the first small diameter gear 31b. The rotation axis of the second large diameter gear 33a is the second axis A2. The second small diameter gear 33b is formed to have a smaller diameter than the second large diameter gear 33a. The second small diameter gear 33b is formed integrally with the second large diameter gear 33a and rotates integrally with the second large diameter gear 33a. The rotation axis of the second small diameter gear 33b is the second axis A2. The second small diameter gear 33b meshes with the worm shaft gear 27.

[0052] When the handle shaft 11 rotates due to the rotation of the handle 5, the drive gear 13 rotates. The rotation of the drive gear 13 is transmitted to the pinion gear 17. The rotation of the pinion gear 17 is transmitted to the worm shaft gear 27 via the reduction mechanism 19. The rotation of the worm shaft gear 27 is transmitted to the worm shaft 23 via the torque limiting structure 34 shown in FIG. 6. When the worm shaft 23 rotates, the slider 25 and the spool shaft 15 move in the front-to-rear direction.

[0053] As shown in Figures 1 and 2, the rotor 9 is used to wind fishing line onto the spool 7. The rotor 9 is located at the front of the reel body 3. The rotor 9 is configured to be rotatable relative to the reel body 3. The rotor 9 is located radially outward of the pinion gear 17. The rotor 9 is attached to the pinion gear 17 so as to be rotatable integrally with it.

[0054] When the handle shaft 11 is rotated by rotating the handle 5, the drive gear 13 rotates. The rotation of the drive gear 13 is transmitted to the pinion gear 17. The rotor 9 rotates in conjunction with the rotation of the pinion gear 17.

[0055] 6, the torque limiting structure 34 includes the worm shaft 23, the worm shaft gear 27, and a torsion spring 35 (an example of a friction force generating member). The torque limiting structure 34 allows or cancels torque transmission from the worm shaft gear 27 to the worm shaft 23 by the friction force of the torsion spring 35.

[0056] The torsion spring 35 comes into contact with at least one of the worm shaft 23 and the worm shaft gear 27, thereby generating a frictional force in the circumferential direction about the rotational axis W2 of the worm shaft gear 27. In this embodiment, the torsion spring 35 comes into contact with the worm shaft 23, thereby generating a frictional force in the circumferential direction about the rotational axis W1 of the worm shaft 23.

[0057] 6, the torsion spring 35 is slidably disposed on the outer circumferential surface of the worm shaft 23. The torsion spring 35 is locked to the worm shaft gear 27 as shown in FIG.

[0058] As shown in Figure 6, the torsion spring 35 has a first spring portion 37 and a locking portion 39. The first spring portion 37 is a coil spring. The first spring portion 37 is wound in a first winding direction C1. The first winding direction C1 is the direction in which the wire of the first spring portion 37 is wound starting from the locking portion 39.

[0059] The first spring portion 37 is disposed on the outer peripheral surface of the worm shaft 23 so that the first winding direction C1 is opposite to the fishing line winding direction R1 of the worm shaft gear 27. For example, the first spring portion 37 is disposed on the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23 so that the first winding direction C1 is opposite to the fishing line winding direction R1 of the worm shaft gear 27. The inner peripheral surface of the first spring portion 37 contacts the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23.

[0060] As a result, when the worm shaft gear 27 rotates in the fishing line winding direction R1, the first spring portion 37, which is wound in the first winding direction C1, tightens. A frictional force is generated between the inner peripheral surface of the first spring portion 37 and the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23. Torque is transmitted from the worm shaft gear 27 to the worm shaft 23 by this frictional force.

[0061] The fishing line winding direction R1 of the worm shaft gear 27 is defined around the rotation axis W2 of the worm shaft gear 27. For example, the fishing line winding direction R1 of the worm shaft gear 27 is the same as the direction in which the worm shaft 23 rotates when the slider 25 and the spool shaft 15 move back and forth.

[0062] As shown in FIGS. 4A and 4B, the locking portion 39 is locked in the locking hole 27e. For example, the locking portion 39 extends from the first spring portion 37 in a direction away from the rotation axis W1 of the worm shaft 23. The locking portion 39 is locked in one of the locking holes 27e. As shown in FIG. 6, the locking portion 39 has an arm portion 39a, an insertion portion 39b, and a claw portion 39c. The arm portion 39a extends from the first spring portion 37. The insertion portion 39b is formed integrally with the arm portion 39a. The claw portion 39c is formed integrally with the insertion portion 39b.

[0063] 4A, an end of the first spring portion 37 is disposed in the annular stepped portion 27d of the worm shaft gear 27. An arm portion 39a of the locking portion 39 is disposed in the guide groove 27f of the worm shaft gear 27. The insertion portion 39b is inserted into one of the plurality of insertion holes 27c.

[0064] 4B, the claw portion 39c extends along the side surface of the gear body 27a of the worm shaft gear 27. The tip of the claw portion 39c comes into contact with the inner circumferential surface of the annular protrusion 27b of the worm shaft gear 27. By bringing the tip of the claw portion 39c into contact with the inner circumferential surface of the annular protrusion 27b of the worm shaft gear 27, it is possible to prevent the torsion spring 35 from rotating.

[0065] In the torque limiting structure 34 described above, as shown in FIG. 6, the first winding direction C1 of the first spring portion 37 of the torsion spring 35 is opposite to the fishing line winding direction R1 of the worm shaft gear 27, so when the worm shaft gear 27 rotates, the first spring portion 37 of the torsion spring 35 tightens.

[0066] As a result, the torque of the worm shaft gear 27 is transmitted to the worm shaft 23 by the frictional force between the inner circumferential surface of the first spring portion 37 of the torsion spring 35 and the outer circumferential surface of the worm shaft 23 .

[0067] Here, when the torque of the worm shaft gear 27 becomes larger than the allowable torque, the inner peripheral surface of the first spring portion 37 of the torsion spring 35 slides on the outer peripheral surface of the worm shaft 23. In this state, the torque is not transmitted from the worm shaft gear 27 to the worm shaft 23.

[0068] The above-described spinning reel 1 has the following characteristics: In the spinning reel 1, when the torque of the worm shaft gear 27 is equal to or less than the allowable torque, a frictional force is generated between the torsion spring 35 and the worm shaft 23 in the circumferential direction around the rotation axis W2 of the worm shaft gear 27.

[0069] In this state, if the torque of the worm shaft gear 27 becomes larger than the allowable torque, the worm shaft gear 27 rotates continuously relative to the worm shaft gear 27. As a result, the worm shaft gear 27 constituting the torque limiting structure 34 can be made smaller than in the prior art. In the spinning reel 1, the torsion spring 35 is slidably disposed on the outer circumferential surface of the worm shaft 23 while being engaged with the worm shaft gear 27. With this configuration, a stable friction force can be generated between the torsion spring 35 and the worm shaft 23.

[0070] In the spinning reel 1, the first spring portion 37 of the torsion spring 35 is disposed on the outer peripheral surface of the worm shaft 23 so that the first winding direction C1 is opposite to the fishing line winding direction R1 of the worm shaft gear 27. With this configuration, when the worm shaft gear 27 rotates in the fishing line winding direction R1, the first spring portion 37 of the torsion spring 35 tightens, so that torque can be suitably transmitted from the worm shaft gear 27 to the worm shaft 23.

[0071] In the spinning reel 1, the locking portion 39 of the torsion spring 35 is locked in the locking hole 27e of the worm shaft gear 27. With this configuration, the torsion spring 35 can be engaged with the worm shaft gear 27 in an appropriate manner.

[0072] In the spinning reel 1, the insertion portion 39b of the locking portion 39 of the torsion spring 35 is inserted into the locking hole 27e of the worm shaft gear 27, and the claw portion 39c extends along the side surface of the worm shaft gear 27. This allows the torsion spring 35 to be more appropriately engaged with the worm shaft gear 27.

[0073] (Variation) (A) In the above embodiment, an example was shown in which the torsion spring 35 had the first spring portion 37. In this case, depending on the shape of the groove portion 23b of the worm shaft 23, if an external force acts on the spool shaft 15 in the direction opposite to the direction in which the spool shaft 15 advances, the worm shaft 23 may rotate in the opposite direction to the fishing line reeling direction R1, causing the first spring portion 37 to loosen.

[0074] To solve this problem, as shown in FIG. 7, the torsion spring 35 may further include a second spring portion 41. The second spring portion 41 is a coil spring. The second spring portion 41 is connected to the first spring portion 37. The second spring portion 41 is formed integrally with the first spring portion 37. For example, the second spring portion 41 is formed integrally with the first spring portion 37 via a connecting portion 42.

[0075] The second spring portion 41 is wound in a second winding direction C2 opposite to the first winding direction C1. The second winding direction C2 is the direction in which the wire of the second spring portion 41 is wound starting from the end of the first spring portion 37, for example, the connecting portion 42.

[0076] The second spring portion 41 is disposed on the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23 so that the second winding direction C2 is the same as the fishing line winding direction R1 of the worm shaft gear 27. The inner peripheral surface of the second spring portion 41 contacts the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23.

[0077] As a result, when the worm shaft 23 rotates in the opposite direction to the fishing line winding direction R1, the second spring portion 41 tightens. A frictional force is generated between the inner peripheral surface of the second spring portion 41 and the outer peripheral surface of the spring arrangement portion 23c of the worm shaft 23. This frictional force prevents the first spring portion 37 from loosening due to the frictional force of the O-ring 43.

[0078] (B) As shown in FIG. 8, the torque limiting structure 34 of the above embodiment may further include an O-ring 43. The O-ring 43 is disposed between the outer peripheral surface of the worm shaft 23 and the inner peripheral surface of the insertion hole 27c of the worm shaft gear 27. For example, the worm shaft 23 further includes a first ring arrangement portion 23d. The first ring arrangement portion 23d is provided on the outer peripheral surface of the shaft body 23a. The first ring arrangement portion 23d is an annular groove.

[0079] The worm shaft gear 27 further includes a second ring placement portion 27g. The second ring placement portion 27g is provided on the inner circumferential surface of the insertion hole 27c. The second ring placement portion 27g is an annular groove. The second ring placement portion 27g is disposed radially outward of the first ring placement portion 23d.

[0080] The O-ring 43 is disposed between the first ring mounting portion 23d and the second ring mounting portion 27g in the radial direction away from the rotational axis W1 of the worm shaft 23. The O-ring 43 contacts the bottom of the first ring mounting portion 23d and the bottom of the second ring mounting portion 27g. It is preferable that the O-ring 43 be disposed in a compressed state between the first ring mounting portion 23d and the second ring mounting portion 27g in the radial direction.

[0081] With this configuration, the frictional force of the O-ring 43 can prevent the first spring portion 37 from loosening as described in the modified example (A) above.

[0082] (C) In the above embodiment, an example was shown in which the torsion spring 35 is used as the friction force generating member in the torque limiting structure 34. In the torque limiting structure 34, the friction force generating member may be configured in any way as long as it can come into contact with at least one of the worm shaft 23 and the worm shaft gear 27.

[0083] 9, the O-ring 43 used in the modified example (B) may be used as the frictional force generating member without using the torsion spring 35. In this case, the O-ring 43 is disposed in a compressed state between the first ring arrangement portion 23d and the second ring arrangement portion 27g in the radial direction away from the rotational axis W1 of the worm shaft 23.

[0084] In this configuration, when the torque of the worm shaft gear 27 is equal to or less than the allowable torque, the torque of the worm shaft gear 27 is transmitted to the worm shaft 23 via the O-ring 43. Here, when the torque of the worm shaft gear 27 becomes greater than the allowable torque, the O-ring 43 slides against at least one of the first ring arrangement portion 23d and the second ring arrangement portion 27g. In this state, torque is not transmitted from the worm shaft gear 27 to the worm shaft 23. Even with this configuration, the same effects as those of the above embodiment can be obtained.

[0085] (D) In ​​the above embodiment, an example has been shown in which the torsion spring 35 is locked in the locking hole 27e of the worm shaft gear 27. As shown in Fig. 10, the torsion spring 35 may be locked in a protrusion 27h of the worm shaft gear 27. In this case, the protrusion 27h protrudes in the axial direction from the side surface of the gear body 27a.

[0086] The torsion spring 35 has a first spring portion 37 and a locking portion 139. The configuration of the first spring portion 37 is the same as that of the previous embodiment. The locking portion 139 has an arm portion 39a and a hook portion 139c. The configuration of the arm portion 39a is the same as that of the previous embodiment.

[0087] The hook portion 139c is formed integrally with the arm portion 39a. The hook portion 139c is formed in a hook shape. The hook portion 139c is locked to the protrusion 27h. Even with this configuration, the same effects as those of the above embodiment can be obtained. [Industrial Applicability]

[0088] The present invention can be used in spinning reels. [Explanation of symbols]

[0089] 1 spinning reel 3 Reel body 15 Spool shaft 25 sliders 23 Worm shaft 21 Oscillating mechanism 27 Worm shaft gear 27c Insertion hole 27e Locking hole 27g protrusion 34 Torque limiting structure 35 Torsion spring 37 First spring part 39,139 Locking part 39b Insertion part 39c Claw part 41 Second spring part 43,45 O-ring C1 1st winding direction C2 Second winding direction R1 Worm shaft gear fishing line winding direction

Claims

1. The reel body and a spool shaft supported by the reel body; a reciprocating mechanism including a slider attached to the spool shaft and a worm shaft that rotates to reciprocate the spool shaft and the slider in the axial direction; a torque limiting structure including: the worm shaft; a worm shaft gear rotatably supported on the worm shaft; and a frictional force generating member disposed between the worm shaft and the worm shaft gear, which generates a frictional force in a circumferential direction by contacting at least one of the worm shaft and the worm shaft gear, and which allows or disables torque transmission from the worm shaft gear to the worm shaft by the frictional force; Equipped with In the torque limiting structure, When the torque of the worm shaft gear is equal to or less than an allowable torque, the frictional force generating member allows the torque to be transmitted from the worm shaft gear to the worm shaft; When the torque of the worm shaft gear becomes larger than the allowable torque, the inner peripheral surface of the frictional force generating member slides on the outer peripheral surface of the worm shaft, whereby the frictional force generating member releases the transmission of the torque from the worm shaft gear to the worm shaft, and the worm shaft gear rotates continuously relative to the worm shaft. Spinning reel.

2. the friction force generating member is a torsion spring that is engaged with the worm shaft gear and is slidably disposed on the outer circumferential surface of the worm shaft.

2. The spinning reel according to claim 1.

3. the torsion spring has a first spring portion wound in a first winding direction, the first spring portion is disposed on the outer circumferential surface of the worm shaft such that the first winding direction is opposite to the fishing line winding direction of the worm shaft gear; 3. The spinning reel according to claim 2.

4. the torsion spring further includes a second spring portion wound in a second winding direction opposite to the first winding direction and connected to the first spring portion; The second spring portion is disposed on the outer peripheral surface of the worm shaft so that the second winding direction is the same as the fishing line winding direction of the worm shaft gear.

4. The spinning reel according to claim 3.

5. The worm shaft gear has an axially extending hole, The torsion spring has a locking portion that is locked in the hole.

5. The spinning reel according to claim 2.

6. The locking portion has an insertion portion that is inserted into the hole portion, and a claw portion that extends from the insertion portion along a side surface of the worm shaft gear.

6. The spinning reel according to claim 5.

7. The worm shaft gear has a protrusion that protrudes in the axial direction, The torsion spring has a locking portion that is locked to the protrusion.

5. The spinning reel according to claim 2.

8. the worm shaft gear has an insertion hole through which the worm shaft is inserted, the torque limiting structure further includes an O-ring disposed between an outer circumferential surface of the worm shaft and an inner circumferential surface of the insertion hole. A spinning reel according to any one of claims 1 to 7.

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