Torque Limiting Device for Fishing Reel and Fishing Reel

Abstract

The present invention provides a torque limiting device for a fishing reel and a fishing reel. The torque limiting device (70) limits the torque between the drive shaft (30) and the rotating member (52) supported by the drive shaft. The torque limiting device has a housing portion (71), an engaging portion (72), a pair of pin members (73), and a biasing member (74). The housing portion is provided on the drive shaft and opens in the radial direction of the drive shaft. The engaging portion is formed on the inner circumferential surface of the rotating member. The pair of pin members are arranged in the housing portion so as to be able to advance and retreat relative to the rotating member and can engage with the engaging portion. The biasing member is arranged in the housing portion and biases the pair of pin members toward the rotating member. The length (L1) of the housing portion in the axial direction of the drive shaft is equal to or greater than the length (L2) of the rotating member in the axial direction. Accordingly, the durability of the torque limiting device can be improved.

Description

Technical Field

[0001] The present invention relates to a torque limiting device for a fishing reel and a fishing reel. Background Art

[0002] In the prior art, a fishing reel having a torque limiting device is known, and the torque limiting device limits the torque between a rotating shaft member in the fishing reel and a rotating member supported on the shaft member. For example, the fishing reel disclosed in Patent Document 1 has a torque limiting device that limits the torque between a handle shaft and a gear supported on the handle shaft. The torque limiting device has a pin member and a biasing member. The pin member and the biasing member are disposed in a through hole formed in the handle shaft.

[0003] [Prior Art Documents]

[0004] [Patent Documents]

[0005] Patent Document 1: Japanese Patent Grant Gazette No. 5912371 Summary of the Invention

[0006] [Technical Problems to be Solved by the Invention]

[0007] In the prior art, the diameter of the through hole for disposing the pin member and the biasing member is smaller than the length of the driven gear in the axial direction of the handle shaft. Therefore, for example, the outer diameter dimension of the biasing member cannot be set to be greater than the length of the driven gear in the axial direction. That is, since the design freedom of the biasing member is low, it is difficult to improve the durability of the torque limiting device.

[0008] An object of the present invention is to improve the durability of the torque limiting device for a fishing reel and the fishing reel.

[0009] [Means for Solving the Technical Problems]

[0010] The torque limiting device for a fishing reel according to the present invention limits the torque between a drive shaft and a rotating member supported on the drive shaft. The torque limiting device has a housing portion, an engaging portion, at least one pin member, and at least one biasing member. The housing portion is provided on the drive shaft and opens in the radial direction of the drive shaft. The engaging portion is formed on the inner circumferential surface of the rotating member. A pair of pin members are disposed in the housing portion so as to be able to advance and retreat relative to the rotating member and can engage with the engaging portion. At least one biasing member is disposed in the housing portion and biases one pin member toward the rotating member. The length of the housing portion in the axial direction of the drive shaft is greater than the length of the rotating member in the axial direction.

[0011] In the torque limiting device of the fishing reel, in the axial direction of the shaft member, the length of the accommodating portion is equal to or greater than the length of the rotating member. Therefore, the design freedom of the biasing member disposed in the accommodating portion can be improved. Accordingly, for example, the outer diameter dimension of the biasing member can be made equal to or greater than the length of the rotating member in the axial direction, thereby improving the durability of the biasing member. As a result, the durability of the torque limiting device can be improved.

[0012] The biasing member may be a helical spring. The outer diameter of the biasing member may be equal to or greater than the length of the rotating member in the axial direction. In this case, the outer diameter dimension of the helical spring can be set to be equal to or greater than the length of the rotating member in the axial direction, or the wire diameter of the helical spring can be made larger than the wire diameter of the helical spring in the prior art. Therefore, the durability of the helical spring can be improved. As a result, the durability of the torque limiting device can be improved.

[0013] The shaft member may have a flange portion that abuts against the rotating member in the axial direction. The accommodating portion may be formed by cutting off a part of the flange portion. In this case, since the accommodating portion is formed by cutting off a part of the flange portion, even when the length of the accommodating portion in the axial direction is increased, the enlargement of the shaft member in the axial direction can be suppressed.

[0014] The engaging portion may have an inclined surface that is inclined so as to gradually approach the axis of the shaft member as it approaches the flange portion. In this case, when the pin member engages with the engaging portion, a force that presses the rotating member toward the flange portion is generated by the inclined surface of the engaging portion, so that the rotating member is less likely to wobble.

[0015] The fishing reel according to another invention of the present invention includes a reel body, a shaft member, a rotating member, and the above-described torque limiting device, wherein the shaft member is rotatably supported by the reel body; the rotating member is supported by the shaft member; and the torque limiting device limits the torque between the shaft member and the rotating member.

[0016] In this fishing reel, in the axial direction of the shaft member, the length of the accommodating portion is equal to or greater than the length of the rotating member. Therefore, the design freedom of the biasing member disposed in the accommodating portion can be improved. Accordingly, for example, the outer diameter dimension of the biasing member can be made equal to or greater than the length of the rotating member in the axial direction, thereby improving the durability of the biasing member. As a result, the durability of the torque limiting device can be improved.

[0017] [Advantages of the Invention]

[0018] According to the present invention, for the torque limiting device of the fishing reel and the fishing reel, the durability of the torque limiting device can be improved. [Description of the Drawings]

[0019] Figure 1It is a top view of a double-bearing fishing reel adopting an embodiment of the present invention.

[0020] Figure 2 It is Figure 1 a sectional view taken along line II-II of

[0021] Figure 3 It is a right view of an electric fishing reel in a state where the first side cover and the mechanism mounting plate are removed.

[0022] Figure 4 It is a partial three-dimensional exploded view of a double-bearing fishing reel.

[0023] Figure 5 It is a partial three-dimensional view of a drive shaft.

[0024] Figure 6 It is a side view of a clutch reset mechanism.

[0025] Figure 7 It is a sectional view of a mounting portion of a handle shaft.

[0026] Figure 8 It is Figure 7 a sectional view taken along line VIII-VIII of

[0027] [Explanation of reference numerals]

[0028] 30: Drive shaft (an example of a shaft member); 30b: Flange portion; 52: Rotating member; 70: Torque limiting device; 71: Receiving portion; 72: Engaging portion; 72c: Second inclined surface (an example of an inclined surface); 73: Pin member; 74: Biasing member; 100: Double-bearing fishing reel (an example of a fishing reel for fishing). Detailed implementation mode

[0029] As Figures 1 to 3 shown, the double-bearing fishing reel 100 adopting an embodiment of the present invention has a fishing reel main body 2, a spool 3, a handle 4, and a spool drive mechanism 13 (refer to Figure 3 ). The double-bearing fishing reel 100 is an electric fishing reel that rotates the spool 3 by driving a motor 12 with electric power supplied from an external power source. The double-bearing fishing reel 100 is an example of a fishing reel for fishing. In addition, in the following description, the axial direction refers to the direction in which the spool shaft 10 and the drive shaft 30 described later extend.

[0030] The fishing reel main body 2 has a frame 7, a first side cover 8a, and a second side cover 8b. The frame 7 has a first side plate 7a, a second side plate 7b, a plurality of connecting portions 7c, and a mechanism mounting plate 9.

[0031] Towards the front of the frame 7 (the direction in which the fishing line is paid out), the first side plate 7a is arranged on the right side. The second side plate 7b is axially spaced from the first side plate 7a and is arranged on the left side of the frame 7. A plurality of connecting portions 7c extend axially and connect the first side plate 7a and the second side plate 7b. The mechanism mounting plate 9 is arranged between the first side plate 7a and the first side cover 8a, and various mechanisms are mounted on the mechanism mounting plate 9.

[0032] The first side cover 8a covers the right side of the first side plate 7a of the frame 7. The second side cover 8b covers the left side of the second side plate 7b of the frame 7.

[0033] As Figure 2 shown, the spool 3 is rotatable relative to the fishing reel main body 2 and is arranged between the first side plate 7a and the second side plate 7b. The spool 3 is supported by a spool shaft 10 that extends axially inside the fishing reel main body 2. The spool 3 is mounted on the spool shaft 10 so as to be rotatable integrally with the spool shaft 10. The spool shaft 10 is rotatably supported by the fishing reel main body 2 by a pair of bearings 11a, 11b arranged on the fishing reel main body 2. The spool shaft 10 in the present embodiment extends in the left-right direction.

[0034] The handle 4 is rotatable relative to the fishing reel main body 2. The handle 4 is provided on the first side cover 8a side of the fishing reel main body 2.

[0035] The spool driving mechanism 13 transmits the rotations of the handle 4 and the motor 12 to the spool 3. As Figure 3 shown, the spool driving mechanism 13 has a first rotation transmission mechanism 14 and a second rotation transmission mechanism 15.

[0036] The first rotation transmission mechanism 14 decelerates the rotation of the motor 12 and transmits it to the spool 3. Specifically, the first rotation transmission mechanism 14 has: a planetary gear mechanism (not shown) connected to the output shaft of the motor 12; a first gear member 60; a second gear member 61; and a pinion 32.

[0037] The rotation of the motor 12 is transmitted to the first gear member 60 via the planetary gear mechanism. The second gear member 61 meshes with the first gear member 60. The second gear member 61 is an intermediate gear for transmitting the rotation of the first gear member 60 to the pinion 32 and meshes with the pinion 32.

[0038] The pinion gear 32 is rotatable about the axis of the spool shaft 10, and the spool shaft 10 passes through the inner peripheral portion of the pinion gear 32. Further, the pinion gear 32 is disposed on the fishing reel main body 2 so as to be axially movable between a connected position and a disengaged position. The connected position is a position where the pinion gear 32 is connected to the spool shaft 10 so as to be integrally rotatable with the spool shaft 10, and the disengaged position is a position where the connection between the pinion gear 32 and the spool shaft 10 is disengaged. The pinion gear 32 engages with a clutch fork 41 described later and moves axially together with the clutch fork 41. The pinion gear 32 has an annular recess 32a for engaging the clutch fork 41.

[0039] The second rotation transmission mechanism 15 transmits the rotation of the handle 4 to the spool 3 via the first rotation transmission mechanism 14. The second rotation transmission mechanism 15 includes a drive shaft 30, a drive gear 31, and a third gear member 62.

[0040] The drive shaft 30 is an example of a shaft member. The handle 4 is connected to the drive shaft 30 so as to be integrally rotatable with the drive shaft 30. The drive shaft 30 is rotatably supported by the fishing reel main body 2. The drive shaft 30 extends in the left-right direction. As Figure 5 shown, the drive shaft 30 has a mounting portion 30a and a flange portion 30b. The mounting portion 30a is a portion for mounting a rotating member 52 described later. The outer peripheral surface of the mounting portion 30a is formed in a cylindrical shape. The flange portion 30b extends radially outward of the drive shaft 30 with respect to the mounting portion 30a. The outer diameter of the flange portion 30b is larger than the outer diameter of the mounting portion 30a. The flange portion 30b is disposed adjacent to the mounting portion 30a on the side closer to the handle 4 than the mounting portion 30a.

[0041] The drive shaft 30 is mounted on the first side cover 8a by a roller clutch (not shown) that prohibits rotation in the direction opposite to the winding direction. Further, the drive shaft 30 is also prohibited from rotating in the direction opposite to the winding direction by a claw-type one-way clutch composed of a rotating member 52 and a claw member 54 (see Figure 4 ).

[0042] The drive gear 31 is rotatably mounted on the drive shaft 30. The rotation of the drive shaft 30 is transmitted to the drive gear 31 via a well-known drag mechanism.

[0043] The third gear member 62 meshes with the drive gear 31 and is connected to the carrier of the planetary gear mechanism so as to be integrally rotatable with the carrier of the planetary gear mechanism. Accordingly, the rotation of the third gear member 62 is transmitted to the pinion gear 32 via the carrier, the first gear member 60, and the second gear member 61.

[0044] The double-bearing fishing reel 100 further includes a clutch mechanism 16 (see Figure 2) and the clutch operating member 17 (refer to Figure 3 ). In addition, as Figure 4 and Figure 6 show, the double-bearing fishing reel 100 also has a clutch control mechanism 20, a clutch reset mechanism 22, and a restricting member 24.

[0045] The clutch mechanism 16 is a mechanism for transmitting the rotational force of the handle 4 to the spool 3 or disconnecting the transmission of the rotational force. The clutch mechanism 16 has the same structure as the clutch mechanism in the prior art and is provided between the spool shaft 10 and the pinion 32. As Figure 2 shows, the clutch mechanism 16 has an engagement pin 16a and an engagement recess 16b.

[0046] When the clutch mechanism 16 is in the transmission state, that is, when the pinion 32 is in the connected position, the engagement pin 16a engages with the engagement recess 16b, and the rotation of the pinion 32 is transmitted to the spool shaft 10. On the other hand, when the clutch mechanism 16 is in the disconnected state, that is, when the pinion 32 is in the disengaged position, the engagement pin 16a disengages from the engagement recess 16b, and the rotation of the pinion 32 is not transmitted to the spool shaft 10.

[0047] The clutch operating member 17 is supported by the fishing reel main body 2 at the rear of the fishing reel main body 2 so as to be movable in the vertical direction. The clutch operating member 17 can move between Figure 3 the first position shown by the solid line and the second position shown by the dashed line, and is biased toward the first position side.

[0048] As Figure 4 shows, the clutch operating member 17 has a rotating portion 18 and an operating portion 19. The rotating portion 18 is supported by the fishing reel main body 2 so as to be rotatable about the axis of the spool shaft 10. The rotating portion 18 has an annular portion 18a, an insertion portion 18b, a first spring hooking portion 18c, and a connecting portion 18d. The annular portion 18a is supported on the outer peripheral surface of the first support portion 9a provided on the mechanism mounting plate 9 so as to be swingable. The insertion portion 18b penetrates the operating portion 19 in the axial direction and is connected to the operating portion 19 so as to be movable integrally with the operating portion 19.

[0049] The first spring hooking portion 18c is formed to extend radially outward from the outer peripheral portion of the annular portion 18a. One end of the first spring member 51 that biases the clutch operating member 17 toward the first position is hooked on the first spring hooking portion 18c. The first spring member 51 is, for example, a helical spring. The other end of the first spring member 51 is hooked on the outer side surface of the fishing reel main body 2 on the side of the first side cover 8a of the mechanism mounting plate 9.

[0050] The connecting portion 18d connects the annular portion 18a and the insertion portion 18b. A support shaft 18e is provided on the connecting portion 18d, and the support shaft 18e supports a clutch pawl 44 (to be described later) of the clutch control mechanism 20.

[0051] The operation portion 19 is a portion for manually pressing and operating the clutch operation member 17. The operation portion 19 is arranged substantially parallel to the spool shaft 10. The operation portion 19 can move along the first side plate 7a and the second side plate 7b via a first contact member 43a and a second contact member 43b.

[0052] The clutch control mechanism 20 alternately switches the clutch mechanism 16 between a transmission state and a disconnection state every time the clutch operation member 17 moves from the first position to the second position. The structure of the clutch control mechanism 20 is the same as that in the prior art, so it will be simply described here.

[0053] The clutch control mechanism 20 includes a clutch cam 40, a clutch fork 41, and a clutch pawl 44.

[0054] The clutch cam 40 rotates only in one direction every time the clutch operation member 17 moves from the first position to the second position. Specifically, the clutch cam 40 rotates a predetermined rotation phase RP in the first direction R1 shown every time the clutch operation member 17 moves from the first position to the second position. The clutch cam 40 is rotatably mounted on the first support portion 9a of the mechanism mounting plate 9. Figure 6 As shown, the clutch cam 40 has a plurality of ratchet teeth 40a and a plurality of cam portions 40b. The plurality of ratchet teeth 40a are circumferentially spaced apart on the outer peripheral surface of the clutch cam 40. The predetermined rotation phase RP is determined according to the number of ratchet teeth 40a. In the present embodiment, the number of ratchet teeth 40a is 12, and the predetermined rotation phase RP is 30 degrees.

[0055] As Figure 6 shown, the ratchet teeth 40a have a first ratchet tooth 40c and a second ratchet tooth 40d. The first ratchet tooth 40c and the second ratchet tooth 40d are alternately arranged at intervals in the circumferential direction.

[0056] The cam portions 40b are circumferentially spaced apart at a phase PS associated with the predetermined rotation phase RP. The cam portions 40b move the clutch fork 41 in the axial direction every time the clutch operation member 17 moves from the first position to the second position.

[0057] The clutch fork 41 is provided to move the pinion 32 between the connection position and the release position. As

[0058] shown, Figure 4As shown, the clutch fork 41 is supported by a guide member 49 so as to be axially movable, and the guide member 49 is fixed to the first support portion 9a of the mechanism mounting plate 9. The clutch fork 41 is axially biased in a direction approaching the clutch cam 40 by two second spring members 42 mounted on the guide member 49. The clutch fork 41 has an engaging portion 41a that engages with the annular recess 32a of the pinion 32.

[0059] The clutch pawl 44 is supported by a support shaft 18e of the rotating portion 18 so as to be swingable. As the clutch operating member 17 moves from the first position to the second position, the clutch pawl 44 rotates the clutch cam 40 by a predetermined rotation phase RP in the first direction R1. Specifically, the clutch pawl 44 engages with either the first ratchet tooth 40c or the second ratchet tooth 40d of the ratchet teeth 40a, and presses the clutch cam 40 in the first direction R1. The clutch pawl 44 is biased toward the ratchet teeth 40a by a third spring member 48 supported by the support shaft 18e of the rotating portion 18.

[0060] The clutch reset mechanism 22 is a mechanism that returns the clutch mechanism 16 to the transmission state by rotating the handle 4 when the clutch mechanism 16 is in the disengaged state. The clutch reset mechanism 22 has a rotating member 52. The rotating member 52 is supported by the drive shaft 30 and rotates in response to the rotation of the handle 4. The rotating member 52 is mounted on the mounting portion 30a. The rotating member 52 abuts against the flange portion 30b in the axial direction. The axial movement of the rotating member 52 is restricted by the flange portion 30b.

[0061] The rotating member 52 has a plurality of protrusion portions 52a and a connection hole 52b. The protrusion portions 52a are provided at intervals in the circumferential direction. When the clutch mechanism 16 is in the disengaged state, the protrusion portions 52a engage with the first ratchet teeth 40c of the clutch cam 40 by rotating the handle 4, and rotate the clutch cam 40 in the first direction R1.

[0062] The protrusion portions 52a are configured not to engage with the second ratchet teeth 40d of the clutch cam 40. Specifically, the second ratchet teeth 40d are formed to be thinner in the radial direction than the first ratchet teeth 40c. In addition, when the clutch mechanism 16 is in the transmission state, the protrusion portions 52a are disposed at positions close to the second ratchet teeth 40d. Therefore, even if the handle 4 rotates, the clutch cam 40 will not be rotated in the first direction R1 by the protrusion portions 52a.

[0063] The connection hole 52b is circular except for an engaging portion 72 described later, and the drive shaft 30 axially penetrates through the connection hole 52b.

[0064] The movement of the restricting member 24 that restricts the movement of the clutch operating member 17 restricts the operation of the clutch return mechanism 22 when the clutch mechanism 16 is switched from the transmission state to the disengaged state.

[0065] Specifically, when the clutch mechanism 16 is in the transmission state, if the clutch operating member 17 is moved from the first position to the second position, the clutch mechanism 16 is switched from the transmission state to the disengaged state by the rotation of the clutch cam 40. The restricting member 24 restricts the operation of the clutch return mechanism 22 during at least a part of the period from when the clutch mechanism 16 is switched from the transmission state to the disengaged state until the clutch operating member 17 returns to the second position. In addition, at least a part of the period includes when the clutch operating member 17 is located at the second position.

[0066] As Figure 4 shown, the restricting member 24 is provided on the rotating portion 18 of the clutch operating member 17. Specifically, the restricting member 24 extends in a plate shape along the axial direction from the annular portion 18a of the rotating portion 18. The restricting member 24 is integrally provided on the rotating portion 18. The restricting member 24 is formed, for example, by bending a part of the rotating portion 18.

[0067] When the clutch mechanism 16 is switched from the transmission state to the disengaged state by the movement of the clutch operating member 17, the restricting member 24 restricts the interference between the first ratchet tooth 40c of the clutch cam 40 and the protruding portion 52a of the rotating member 52. Specifically, the rotating portion 18 rotates as the clutch operating member 17 moves from the first position to the second position, and accordingly, the restricting member 24 rotates from the Figure 6 standby position shown by the solid line to the restricting position shown by the dashed line. Accordingly, the rotation of the rotating member 52 in the winding direction WD is restricted by the restricting member 24, thereby preventing the operation of the clutch return mechanism 22 due to the rotation of the handle 4.

[0068] As Figure 6 and Figure 7 shown, the double-bearing fishing reel 100 also has a torque limiting device 70. The torque limiting device 70 limits the torque transmitted between the drive shaft 30 and the rotating member 52. The torque limiting device 70 is provided to prevent damage to the restricting member 24 and the protruding portion 52a when a large load is applied to the restricting member 24.

[0069] The torque limiting device 70 has a housing portion 71, an engaging portion 72, a pair of pin members 73, and a biasing member 74.

[0070] The housing portion 71 is provided on the drive shaft 30. The housing portion 71 is formed in the mounting portion 30a. The housing portion 71 opens in the radial direction of the drive shaft 30. In the present embodiment, the housing portion 71 is constituted by a through hole formed by penetrating the mounting portion 30a in the radial direction. AsFigure 5 and Figure 8 As shown in Figure 8 , the housing portion 71 is formed by cutting a part of the flange portion 30b. A part of the housing portion 71 overlaps the flange portion 30b in the radial direction.

[0071] As Figure 8 shown in Figure 8 , the length L1 of the housing portion 71 in the axial direction is equal to or greater than the length L2 of the rotating member 52 in the axial direction. Preferably, the length L1 of the housing portion 71 is longer than the length L2 of the rotating member 52. An embodiment in which the length L1 of the housing portion 71 is longer than the length L2 of the rotating member 52 is shown in Figure 8 .

[0072] The engaging portion 72 is formed on the inner peripheral surface of the rotating member 52. The engaging portion 72 is formed on the inner peripheral surface of the rotating member 52 so as to be recessed radially outward. The engaging portion 72 is formed in the connecting hole 52b. In the present embodiment, four engaging portions 72 are provided at intervals in the circumferential direction, and are formed so as to be recessed from the mounting portion 30a side toward the connecting hole 52b.

[0073] The engaging portion 72 has a locking surface 72a, a first inclined surface 72b, and a second inclined surface 72c. The locking surface 72a is formed along the tips of a pair of pin members 73. The first inclined surface 72b is configured to urge the rotating member 52 in the winding direction WD. When viewed from the axial direction of the drive shaft 30, the first inclined surface 72b is linearly inclined and is formed such that the inner diameter gradually increases as it advances in the winding direction WD.

[0074] The second inclined surface 72c is an example of an inclined surface. As Figure 8 shown in Figure 8 , the second inclined surface 72c is inclined so as to gradually approach the axis C of the drive shaft 30 (see Figure 7 ) as it approaches the flange portion 30b. In addition, the axis C of the drive shaft 30 extends in a direction orthogonal to the Figure 7 paper surface. The second inclined surface 72c is formed so as to cover the locking surface 72a and the first inclined surface 72b. In addition, the second inclined surface 72c may be formed only on the locking surface 72a.

[0075] A pair of pin members 73 are disposed in the housing portion 71 so as to be able to advance and retreat relative to the rotating member 52. A pair of pin members 73 are guided in the radial direction by the inner peripheral surface in the housing portion 71. In the axial direction, the length L3 of a pair of pin members 73 is equal to or greater than the length L2 of the rotating member 52. Preferably, the length L3 of a pair of pin members 73 is longer than the length L2 of the rotating member 52. An embodiment in which the length L3 of a pair of pin members 73 is longer than the length L2 of the rotating member 52 is shown in Figure 8 . The length L3 of a pair of pin members 73 is shorter than the length L1 of the housing portion 71.

[0076] A pair of pin members 73 can engage with the engaging portion 72. The pair of pin members 73 has a head portion 73a with a spherical top and a shaft portion 73b having a diameter smaller than that of the head portion 73a. The head portion 73a presses against the locking surface 72a, whereby the rotating member 52 rotates together with the drive shaft 30. When a torque equal to or greater than the allowable value acts between the drive shaft 30 and the rotating member 52, the head portion 73a retracts into the accommodating portion 71, and the drive shaft 30 rotates relative to the rotating member 52. That is, when a torque equal to or greater than the allowable value acts between the drive shaft 30 and the rotating member 52, only the drive shaft 30 rotates. In a state where the pair of pin members 73 is engaged with the engaging portion 72, the pair of pin members 73 presses the rotating member 52 against the flange portion 30b via the second inclined surface 72c.

[0077] The biasing member 74 is disposed in the accommodating portion 71. The biasing member 74 biases the pair of pin members 73 toward the rotating member 52. The biasing member 74 is, for example, a coil spring and is installed in a compressed state on the shaft portion 73b of the pair of pin members 73. The outer diameter D1 of the biasing member 74 is equal to or greater than the axial length L2 of the rotating member 52. As Figure 8 shown, it is preferable that the outer diameter D1 of the biasing member 74 is longer than the length L2 of the rotating member 52. An embodiment in which the outer diameter D1 of the biasing member 74 is longer than the length L2 of the rotating member 52 is shown in Figure 8 . The outer diameter D1 of the biasing member 74 is smaller than the length L1 of the accommodating portion 71. The inner diameter of the biasing member 74 is larger than the outer diameter of the shaft portion 73b and smaller than the outer diameter of the head portion 73a.

[0078] In the torque limiting device 70 having the above structure, in the axial direction, the length L1 of the accommodating portion 71 is equal to or greater than the length L2 of the rotating member 52. Therefore, the design freedom of the biasing member 74 disposed in the accommodating portion 71 can be improved. Accordingly, for example, the outer diameter dimension of the biasing member 74 (here, the outer diameter D1 of the coil spring) can be made equal to or greater than the length L2 of the rotating member 52, thereby improving the durability of the biasing member 74. As a result, the durability of the torque limiting device 70 can be improved. In addition, in the axial direction, the length L3 of the pair of pin members 73 can be made equal to or greater than the length L2 of the rotating member 52. Therefore, the durability of the torque limiting device 70 can be further improved.

[0079] <Other Embodiments>

[0080] The above describes one embodiment of the present invention. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the invention. In particular, the multiple embodiments and modification examples described in this specification can be arbitrarily combined as needed.

[0081] (a) In the above-described embodiment, an electric fishing reel that drives the spool 3 by the motor 12 is disclosed as a fishing reel, but the present invention can also be applied to a double-bearing fishing reel with manual winding.

[0082] (b) In the above-described embodiment, the restricting member 24 is integrally provided on the rotating portion 18, but it is not necessarily required to be integrally provided on the rotating portion 18. Additionally, it is not necessarily required to provide the restricting member 24 on the rotating portion 18.

[0083] (c) In the above-described embodiment, the rotating member 52 also serves as a one-way clutch and a clutch return mechanism 22, but it is not necessarily required that the rotating member 52 also serves as a one-way clutch and a clutch return mechanism 22. A ratchet member that can engage with the claw member 54 and rotate integrally with the drive shaft 30 can also be provided separately from the rotating member 52.

[0084] (d) In the above-described embodiment, the torque limiting device 70 is configured to limit the torque transmitted between the drive shaft 30 and the rotating member 52, but the torque limiting device 70 can also limit the torque between the worm shaft of the line equalizing mechanism and the driven gear supported on the worm shaft, where the line equalizing mechanism is used to evenly wind the fishing line around the spool 3. Additionally, the torque limiting device 70 can also limit the torque between the drive shaft 30 and other rotating members supported on the drive shaft 30. For example, the torque between the rotating member that transmits rotation to the driven gear and the drive shaft 30 can also be limited. Additionally, the torque between the spool shaft 10 and the rotating member supported by the spool shaft 10 can also be limited.

[0085] (e) It is sufficient for the torque limiting device 70 to have at least one pin member 73. It is sufficient for the torque limiting device 70 to have at least one engaging portion 72. The housing portion 71 does not necessarily need to penetrate the mounting portion 30a in the radial direction. Additionally, the outer peripheral surface of the mounting portion 30a on which the rotating member 52 is mounted does not necessarily need to be cylindrical.

Claims

1. A torque limiting device for a fishing reel, which limits the torque between a shaft member that rotates the fishing reel and a rotating member supported by the shaft member, characterized in that it has a receiving portion, an engaging portion, at least one pin member, and at least one biasing member, wherein the receiving portion is provided on the shaft member and opens in the radial direction of the shaft member; the engaging portion is formed on the inner circumferential surface of the rotating member; at least one of the pin members is arranged in the receiving portion so as to be able to advance and retreat relative to the rotating member and can engage with the engaging portion; at least one of the biasing members is arranged in the receiving portion and biases the pin member toward the rotating member; the length of the receiving portion in the axial direction of the shaft member is greater than or equal to the length of the rotating member in the axial direction.

2. The torque limiting device according to claim 1, characterized in that the biasing member is a helical spring, the outer diameter of the biasing member is greater than or equal to the length of the rotating member in the axial direction.

3. The torque limiting device according to claim 1 or 2, characterized in that the shaft member has a flange portion that abuts against the rotating member in the axial direction, the receiving portion is formed by cutting off a part of the flange portion.

4. The torque limiting device according to claim 3, characterized in that the engaging portion has an inclined surface that is inclined so as to gradually approach the axis of the shaft member as it approaches the flange portion.

5. A fishing reel, characterized in that it has a reel body, a shaft member, a rotating member, and the torque limiting device according to any one of claims 1 to 4, wherein the shaft member is rotatably supported by the reel body; the rotating member is supported by the shaft member; the torque limiting device limits the torque between the shaft member and the rotating member.

Images