Spinning type winding wheel

Abstract

This invention provides a spinning reel that enables miniaturization of the worm gear constituting the torque limiting structure. The spinning reel (1) comprises a reel body (3), a spool (15), an oscillation mechanism (21), and a torque limiting structure (34). The torque limiting structure (34) includes a worm shaft (23), a worm gear (27), and a torque spring (35). The torque spring (35) is disposed between the worm shaft (23) and the worm gear (27). The torque spring (35) generates frictional force circumferentially by contacting the worm shaft (23). The torque spring (35), by means of friction, allows or disallows torque transmission from the worm gear (27) to the worm shaft (23).

Description

Technical Field

[0001] This invention relates to a spinning reel. Background Technology

[0002] Conventional spinning reels consist of a reel body, a spool, a reciprocating mechanism, and a torque limiting structure (see Patent Document 1). The reciprocating mechanism includes a slider mounted on the spool and a worm shaft that rotates to move the spool and the slider in the forward and backward direction.

[0003] The torque limiting structure includes a worm shaft, a worm shaft gear rotatably supported relative to the worm shaft, multiple locking recesses, a pin component, and a force-applying component. Multiple locking recesses are formed on the inner circumferential surface of the worm shaft gear.

[0004] A pin and a force-applying component are mounted on the worm shaft. The pin is positioned to face the inner circumferential surface of the worm shaft gear. The force-applying component applies force to the pin against the inner circumferential surface of the worm shaft gear.

[0005] When the head of the pin component is engaged with one of the multiple locking recesses, the torque of the worm gear is transmitted to the worm shaft. Conversely, when the torque of the worm gear becomes greater than the permissible torque, the repeated engagement and disengagement of the pin component with respect to the multiple locking recesses causes the worm gear to rotate intermittently relative to the worm shaft. In this state, the torque of the worm gear is not transmitted to the worm shaft.

[0006] Patent document 1: Japanese Patent Application Publication No. 2016-136917.

[0007] In conventional torque limiting designs, a pin is engaged with a locking recess, thereby increasing the permissible torque. Thus, when the torque acting on the worm gear is high, and the torque on the worm gear becomes greater than the permissible torque, the worm gear rotates intermittently relative to the worm gear.

[0008] In this case, the worm gear shaft needs to withstand the impact during intermittent operation, so the strength of the worm gear shaft must be ensured. That is, the conventional torque limiting design has the problem of large worm gear shafts. Summary of the Invention

[0009] The present invention was made in view of the above-mentioned problems, and the object of the present invention is to provide a spinning reel that enables miniaturization of the worm shaft gear constituting the torque limiting structure.

[0010] One embodiment of the present invention provides a spinning reel comprising a reel body, a spool, a reciprocating mechanism, and a torque limiting structure. The spool is supported on the reel body. The reciprocating mechanism includes a slider mounted on the spool and a worm shaft that rotates to reciprocate the spool and the slider axially.

[0011] The torque limiting structure includes a worm shaft, a worm shaft gear, and a friction generating component. The worm shaft gear is rotatably supported relative to the worm shaft. The friction generating component is disposed between the worm shaft and the worm shaft gear. The friction generating component generates circumferential friction by contacting at least one of the worm shaft and the worm shaft gear. The friction generating component allows or disallows torque transmission from the worm shaft gear to the worm shaft by means of friction.

[0012] In this spinning type winding reel, when the torque of the worm shaft gear is below the allowable torque, friction is generated circumferentially between the friction-generating component and at least one of the worm shaft and worm shaft gear. In this state, if the torque of the worm shaft gear becomes greater than the allowable torque, the worm shaft gear rotates continuously relative to the worm shaft.

[0013] Therefore, in this spinning type winding wheel, compared with the worm shaft gear that rotates intermittently relative to the worm shaft as in the prior art, the worm shaft gear constituting the torque limiting structure can be miniaturized.

[0014] In other embodiments of the spinning reel of the present invention, preferably, the friction-generating component is engaged with the worm shaft gear. In this case, the friction-generating component is a torque spring that is slidably disposed on the outer peripheral surface of the worm shaft. With this structure, friction can be stably generated between the friction-generating component and the worm shaft.

[0015] In another embodiment of the spinning reel of the present invention, preferably, the torque spring includes a first spring portion wound along a first winding direction. In this case, the first spring portion is arranged on the outer peripheral surface of the worm shaft in such a way that the first winding direction is opposite to the fishing line winding direction of the worm shaft gear.

[0016] With this structure, when the worm shaft gear rotates in the direction of the fishing line winding, the first spring part of the torque spring is compressed, so that the torque can be properly transmitted from the worm shaft gear to the worm shaft.

[0017] In other embodiments of the present invention, in a spinning reel, the torque spring preferably further comprises 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 in such a manner that the second winding direction is the same as the fishing line winding direction of the worm shaft gear.

[0018] Here, when an external force acts on the spool shaft in the opposite direction to the direction of the spool shaft's movement, the worm gear rotates in the opposite direction to the direction of the fishing line winding. In this case, the first spring may loosen. However, by connecting the aforementioned second spring to the first spring, even if the worm gear rotates in the opposite direction to the direction of the fishing line winding, the loosening of the first spring can be suppressed by the second spring.

[0019] In other embodiments of the spinning reel of the invention, the worm gear shaft has a hole extending axially. In this case, the torque spring has a locking portion that engages with the hole. This structure allows the torque spring to be properly engaged with the worm gear shaft.

[0020] In other embodiments of the spinning reel of the present invention, the locking portion preferably has an insertion portion that passes through the hole and a claw portion that extends from the insertion portion along the side of the worm gear shaft. This structure allows the torque spring to be properly locked by means of the worm gear shaft.

[0021] In other embodiments of the spinning reel of the invention, the worm shaft gear preferably has a protrusion extending axially. In this case, the torque spring has a locking portion that engages with the protrusion. This structure allows the torque spring to be properly engaged with the worm shaft gear.

[0022] In other embodiments of the spinning reel of the present invention, preferably, the worm shaft gear has a through hole for the worm shaft to pass through. In this case, the torque limiting structure also includes an O-ring disposed between the outer peripheral surface of the worm shaft and the inner peripheral surface of the through hole.

[0023] In this structure, by placing an O-ring between the outer circumferential surface of the worm shaft and the inner circumferential surface of the through hole, the relaxation of the first spring part can be assisted by the O-ring.

[0024] Invention Effects

[0025] According to the present invention, the worm shaft gear can be miniaturized in a spinning winding reel. Attached Figure Description

[0026] Figure 1 This is a side view of a spinning reel according to an embodiment of the present invention.

[0027] Figure 2 This is a side view with the side cover and main protective components of the spinning reel removed.

[0028] Figure 3 It is an exploded three-dimensional diagram used to illustrate the oscillation mechanism.

[0029] Figure 4A This is a side view (rear surface) of the worm gear shaft.

[0030] Figure 4B This is a side view (front surface) of the worm gear shaft.

[0031] Figure 5 This is a side view used to illustrate the speed reduction mechanism.

[0032] Figure 6 This is an exploded perspective view used to illustrate the torque limiting structure.

[0033] Figure 7 This is a three-dimensional view of the torque spring in variation (A).

[0034] Figure 8 This is a side view of the torque limiting structure of variant (B).

[0035] Figure 9 This is a side view of the torque limiting structure of variant (C).

[0036] Figure 10 This is a side view of the torque limiting structure of variant (D). Detailed Implementation

[0037] The spinning type winding wheel 1 according to one embodiment of the present invention is as follows: Figure 1 As shown, it comprises a winding reel body 3, a handle 5, a drum 7, and a rotor 9. Figure 2 As shown, the spinning reel 1 also includes a handle shaft 11, a drive gear 13, a drum shaft 15, a planetary gear 17, a reduction mechanism 19, an oscillation mechanism 21, and a torque limiting structure 34 (see reference). Figure 6 ).in addition, Figure 2 It is Figure 1 The diagram shows the side cover 1a and main protective component 1b of the spinning type winding wheel 1 after removal.

[0038] like Figure 1 As shown, the handle 5 is rotatably supported on the winding reel body 3. In this embodiment, an example is shown where the handle 5 is positioned on the left side of the winding reel body 3. The handle 5 may also be positioned on the right side of the winding reel body 3. The handle 5 is mounted on the handle shaft 11.

[0039] like Figure 2 As shown, the handle shaft 11 is rotatably supported on the winding reel body 3. The drive gear 13 is mounted on the handle shaft 11 in a manner that allows it to rotate integrally with the handle shaft 11. The drive gear 13 meshes with the planetary gear 17.

[0040] The fishing line is wound around the reel 7. (Example) Figure 2As shown, the drum 7 is configured to move along the front-rear direction relative to the winding reel body 3 together with the drum shaft 15. The drum 7 is connected to the drum shaft 15. For example, the drum 7 is connected to the end of the drum shaft 15 via a traction mechanism not shown in the figure. When the drum 7 is connected to the drum shaft 15, the central axis of the drum 7 is coaxial with the drum shaft X1 described later.

[0041] like Figure 2 As shown, the spool shaft 15 is supported in a way that allows it to move in the front-to-back direction relative to the winding wheel body 3. The spool shaft 15 is inserted into the inner circumference of the cylindrical planetary gear 17. The spool shaft 15 reciprocates in the front-to-back direction relative to the winding wheel body 3 through the operation of the oscillation mechanism 21.

[0042] The drum shaft 15 has a drum axis X1. The front-to-back direction is the direction in which the drum axis X1 extends. Unless otherwise specified, the axial direction is the direction in which the drum axis X1 extends. The radial direction is the direction away from the drum axis X1. The circumferential and rotational directions are the directions about the drum axis X1.

[0043] The oscillation mechanism 21 causes the drum shaft 15 and the handle shaft 11 to move in a forward and backward direction in conjunction with their rotation. The oscillation mechanism 21 is disposed within the internal space of the winding reel body 3. Figure 2 and Figure 3 As shown, the oscillation mechanism 21 has a worm shaft 23, a slider 25, and a worm shaft gear 27.

[0044] The worm shaft 23 rotates to allow the drum shaft 15 and the slider 25 to move in the back-and-forth direction. The worm shaft 23 is arranged parallel to the drum shaft 15. The worm shaft 23 is rotatably supported on the winding reel body 3. The worm shaft 23 has a rotation axis W1.

[0045] The worm shaft 23 has a shaft body 23a, a groove 23b, and a spring mounting portion 23c. The shaft body 23a is a shaft component that is longer in one direction. The shaft body 23a extends axially along the rotation axis W1. The groove 23b is provided on the outer peripheral surface of the shaft body 23a. The pawl component 26, described later, engages with the groove 23b.

[0046] The spring mounting section 23c is used to mount the torque spring 35 (described later) of the torque limiting structure 34. The spring mounting section 23c is formed in a cylindrical shape. The spring mounting section 23c is provided on the shaft body 23a in such a way that it is adjacent to the groove 23b in the axial direction extending from the rotation axis W1.

[0047] The slider 25 is mounted on the drum shaft 15. For example, the slider 25 is fixed to the rear end of the drum shaft 15. The slider 25 moves in the back-and-forth direction by the rotation of the worm shaft 23.

[0048] For example, such as Figure 3As shown, the claw component 26 is mounted on the slider 25. The claw component 26 is rotatably mounted on the drum shaft 15 and the slider 25. The claw component 26 engages with the groove 23b of the worm shaft 23. Thus, when the worm shaft 23 rotates, the claw component 26 moves along the groove 23b of the worm shaft 23. As a result, the slider 25 moves in the back-and-forth direction.

[0049] like Figure 2 and Figure 3 As shown, the worm shaft gear 27 is disposed on the worm shaft 23. The worm shaft gear 27 is rotatably supported relative to the worm shaft 23. Hereinafter, the direction of rotation of the worm shaft gear 27 when winding the fishing line will be denoted as the fishing line winding direction R1.

[0050] The worm shaft gear 27 has a rotation axis W2. For example, the worm shaft gear 27 is arranged on the worm shaft 23 such that the rotation axis W2 of the worm shaft gear 27 is concentric with the rotation axis W1 of the worm shaft 23.

[0051] like Figure 3 , Figure 4A and Figure 4B As shown, the worm shaft gear 27 has a gear body 27a, an annular protrusion 27b, a through hole 27c, an annular stepped portion 27d, at least one locking hole 27e (an example of a hole portion), and at least one guide groove 27f.

[0052] The gear body 27a is formed in the shape of a circular plate. The gear body 27a meshes with the second minor diameter gear 33b (described later) of the reduction mechanism 19. For example... Figure 4B As shown, the annular protrusion 27b extends axially from the outer periphery of the gear body 27a along the rotation axis W2 of the worm gear 27.

[0053] like Figure 3 , Figure 4A and Figure 4B As shown, a through hole 27c is provided in the gear body 27a. For example, the through hole 27c passes through the gear body 27a in the axial direction extending from the rotation axis W2 of the worm shaft gear 27. The worm shaft 23 is inserted into the through hole 27c.

[0054] like Figure 3 and Figure 4A As shown, an annular stepped portion 27d is provided on the inner circumference of the gear body 27a. The annular stepped portion 27d is provided radially around the rotation axis W2 of the worm gear 27 on the outer side of the through hole 27c. The annular stepped portion 27d extends circumferentially around the rotation axis W2 of the worm gear 27.

[0055] 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 spaced apart from each other in the circumferential direction about the rotation axis W2 of the worm shaft gear 27. The plurality of locking holes 27e pass through the gear body 27a in the axial direction extending from the rotation axis W2 of the worm shaft gear 27. Figure 4B As shown, multiple locking holes 27e are arranged on the radial inner side of the annular protrusion 27b.

[0056] like Figure 3 and Figure 4A As shown, at least one guide groove 27f includes a plurality of (e.g., three) guide grooves 27f. In this embodiment, a plurality of (e.g., three) guide grooves 27f are provided on the gear body 27a. For example, the plurality of guide grooves 27f are spaced apart from each other in the circumferential direction about the rotation axis W2 of the worm shaft gear 27. The plurality of guide grooves 27f extend individually from the annular stepped portion 27d toward the plurality of locking holes 27e.

[0057] like Figure 2 As shown, the planetary gear 17 is cylindrical. The planetary gear 17 is rotatably supported on the winding reel body 3. The planetary gear 17 is disposed radially outward of the spool shaft 15. The planetary gear 17 rotates relative to the spool shaft 15. The planetary gear 17 rotates about the spool axis X1.

[0058] like Figure 5 As shown, the reduction mechanism 19 reduces the rotation of the planetary gear 17 and transmits it to the oscillation mechanism 21. Figure 5 In this diagram, the gear teeth of each gear are omitted. The reduction mechanism 19 is disposed between the planetary gear 17 and the oscillation mechanism 21. For example, the reduction mechanism 19 is disposed between the planetary gear 17 and the worm shaft gear 27.

[0059] The reduction mechanism 19 has at least two intermediate gears 31 and 33. For example, the reduction mechanism 19 has a first intermediate gear 31 and a second intermediate gear 33. The first intermediate gear 31 is configured to rotate about a first axis A1 parallel to the spool axis X1. The first intermediate gear 31 is rotatably supported on the winding reel body 3. The first intermediate gear 31 has a first major diameter gear 31a and a first minor diameter gear 31b.

[0060] The first major diameter gear 31a meshes with the planetary gear 17. The axis of rotation of the first major diameter gear 31a is the first shaft A1. The first minor diameter gear 31b is formed with a smaller diameter than the first major diameter gear 31a. The first minor diameter gear 31b is integrally formed with the first major diameter gear 31a and rotates integrally with the first major diameter gear 31a. The axis of rotation of the first minor diameter gear 31b is the first shaft A1.

[0061] The second intermediate gear 33 is configured to rotate about a second axis A2 parallel to the first axis A1. The second intermediate gear 33 is rotatably supported on the winding wheel body 3. The second intermediate gear 33 has a second major diameter gear 33a and a second minor diameter gear 33b.

[0062] The second major diameter gear 33a meshes with the first minor diameter gear 31b. The rotation axis of the second major diameter gear 33a is the second shaft A2. The second minor diameter gear 33b is formed with a smaller diameter than the second major diameter gear 33a. The second minor diameter gear 33b is integrally formed with the second major diameter gear 33a and rotates integrally with the second major diameter gear 33a. The rotation axis of the second minor diameter gear 33b is the second shaft A2. The second minor diameter gear 33b meshes with the worm gear 27.

[0063] If 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 planetary gear 17. The rotation of the planetary gear 17 is transmitted to the worm gear 27 via the reduction mechanism 19. The rotation of the worm gear 27 is transmitted via... Figure 6 The torque limiting structure 34 shown transmits torque to the worm shaft 23. Here, when the worm shaft 23 rotates, the slider 25 and the drum shaft 15 move in the back-and-forth direction.

[0064] like Figure 1 and Figure 2 As shown, rotor 9 is used to wind fishing line onto spool 7. Rotor 9 is located at the front of reel body 3. Rotor 9 is configured to rotate relative to reel body 3. Rotor 9 is located radially outward of planetary gear 17. Rotor 9 is assembled to rotate integrally with respect to planetary gear 17.

[0065] If 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 planetary gear 17. The rotor 9 rotates in conjunction with the rotation of the planetary gear 17.

[0066] like Figure 6 As shown, the torque limiting structure 34 includes a worm shaft 23, a worm shaft gear 27, and a torque spring 35 (an example of a friction-generating component). The torque limiting structure 34, by means of the frictional force of the torque spring 35, allows or disallows torque transmission from the worm shaft gear 27 to the worm shaft 23.

[0067] The torque spring 35 generates frictional force in the circumferential direction about the rotational axis W2 of the worm shaft 27 by contacting at least one of the worm shaft 23 and the worm shaft gear 27. In this embodiment, the torque spring 35 generates frictional force in the circumferential direction about the rotational axis W1 of the worm shaft 23 by contacting the worm shaft 23.

[0068] like Figure 6As shown, the torque spring 35 is slidably disposed on the outer peripheral surface of the worm shaft 23. Figure 4B As shown, the torque spring 35 is engaged with the worm shaft gear 27.

[0069] like Figure 6 As shown, the torque spring 35 has a first spring portion 37 and a locking portion 39. The first spring portion 37 is a helical spring. The first spring portion 37 is wound along 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 with the locking portion 39 as the starting point.

[0070] The first spring portion 37 is disposed on the outer peripheral surface of the worm shaft 23 in a manner opposite to the first winding direction C1 and 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 in a manner opposite to the first winding direction C1 and the fishing line winding direction R1 of the worm shaft gear 27. The inner peripheral surface of the first spring portion 37 is in contact with the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23.

[0071] As a result, when the worm shaft gear 27 rotates along the fishing line winding direction R1, the first spring portion 37, which is wound along the first winding direction C1, is pressed tight. Friction is generated between the inner circumferential surface of the first spring portion 37 and the outer circumferential surface of the spring arrangement portion 23c of the worm shaft 23. With the aid of this friction, torque is transmitted from the worm shaft gear 27 to the worm shaft 23.

[0072] Furthermore, the fishing line winding direction R1 of the worm shaft gear 27 is defined as about 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 rotation direction of the worm shaft 23 when the slider 25 and the drum shaft 15 move in the back-and-forth direction.

[0073] like Figure 4A and Figure 4B As shown, the locking portion 39 engages with 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 engages with one of the plurality of locking holes 27e. Figure 6 As shown, the locking portion 39 has an arm portion 39a, a through portion 39b, and a claw portion 39c. The arm portion 39a extends from the first spring portion 37. The through portion 39b is integrally formed with the arm portion 39a. The claw portion 39c is integrally formed with the through portion 39b.

[0074] like Figure 4A As shown, the end of the first spring portion 37 is disposed in the annular stepped portion 27d of the worm shaft gear 27. The 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 locked in one of the plurality of locking holes 27e.

[0075] like Figure 4B As shown, the claw portion 39c extends along the side of the gear body 27a of the worm shaft gear 27. The end of the claw portion 39c contacts the inner circumferential surface of the annular protrusion 27b of the worm shaft gear 27. By bringing the end of the claw portion 39c into contact with the inner circumferential surface of the annular protrusion 27b of the worm shaft gear 27, the torque spring 35 can be stopped from rotating.

[0076] In the torque limiting configuration 34 described above, such as Figure 6 As shown, the first winding direction C1 of the first spring part 37 of the torque spring 35 is opposite to the winding direction R1 of the fishing line of the worm shaft gear 27, so when the worm shaft gear 27 rotates, the first spring part 37 of the torque spring 35 is compressed.

[0077] As a result, the torque of the worm shaft gear 27 is transmitted to the worm shaft 23 due to the friction between the inner circumferential surface of the first spring portion 37 of the torque spring 35 and the outer circumferential surface of the worm shaft 23.

[0078] Here, if the torque of the worm shaft gear 27 becomes greater than the allowable torque, the inner circumferential surface of the first spring portion 37 of the torque spring 35 slides on the outer circumferential 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.

[0079] The aforementioned spinning type winding reel 1 has the following characteristics. In the spinning type winding reel 1, when the torque of the worm shaft gear 27 is below the allowable torque, a frictional force is generated between the torque spring 35 and the worm shaft 23 in the circumferential direction around the rotation axis W2 of the worm shaft gear 27.

[0080] In this state, when the torque of the worm shaft gear 27 becomes greater than the allowable torque, the worm shaft gear 27 rotates continuously relative to the worm shaft 23. Therefore, compared to the prior art, the worm shaft gear 27 constituting the torque limiting structure 34 can be miniaturized.

[0081] In the spinning type winding reel 1, the torque 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 structure, frictional force can be stably generated between the torque spring 35 and the worm shaft 23.

[0082] In the spinning reel 1, the first spring portion 37 of the torque spring 35 is arranged on the outer circumferential surface of the worm shaft 23 in a manner opposite to the first winding direction C1 and the fishing line winding direction R1 of the worm shaft gear 27. With this structure, when the worm shaft gear 27 rotates along the fishing line winding direction R1, the first spring portion 37 of the torque spring 35 is compressed, so that the torque can be properly transmitted from the worm shaft gear 27 to the worm shaft 23.

[0083] In the spinning type winding reel 1, the locking part 39 of the torque spring 35 is locked into the locking hole 27e of the worm shaft gear 27. With this structure, the torque spring 35 can be properly engaged with the worm shaft gear 27.

[0084] In the spinning type winding reel 1, the locking portion 39b of the torque spring 35 is inserted into the locking hole 27e of the worm shaft gear 27, and the claw portion 39c extends along the side of the worm shaft gear 27. This allows the torque spring 35 to be properly engaged by means of the worm shaft gear 27.

[0085] (Modified Example)

[0086] (A) In the aforementioned embodiment, an example is shown where the torque spring 35 has a first spring portion 37. In this case, depending on the shape of the groove portion 23b of the worm shaft 23, when an external force acts on the spool shaft 15 in the direction opposite to the direction of the spool shaft 15's forward movement, the worm shaft 23 rotates in the opposite direction to the fishing line winding direction R1, and the first spring portion 37 may be released.

[0087] To solve this problem, one could also do as follows: Figure 7 As shown, the torque spring 35 also has a second spring portion 41. The second spring portion 41 is a helical spring. The second spring portion 41 is connected to the first spring portion 37. The second spring portion 41 and the first spring portion 37 are integrally formed. For example, the second spring portion 41 is integrally formed with the first spring portion 37 via a connecting portion 42.

[0088] The second spring section 41 is wound in a second winding direction C2, which is opposite to the first winding direction C1. The second winding direction C2 is the direction in which the wire of the second spring section 41 is wound starting from the end of the first spring section 37, such as the connecting part 42.

[0089] The second spring portion 41 is arranged on the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23 in the same manner as the second winding direction C2 and the fishing line winding direction R1 of the worm shaft gear 27. The inner peripheral surface of the second spring portion 41 is in contact with the outer peripheral surface of the spring mounting portion 23c of the worm shaft 23.

[0090] Therefore, when the worm shaft 23 rotates in the opposite direction to the fishing line winding direction R1, the second spring portion 41 is pressed tight. Friction is generated between the inner circumferential surface of the second spring portion 41 and the outer circumferential surface of the spring mounting portion 23c of the worm shaft 23. Due to this friction, the loosening of the first spring portion 37 can be suppressed by means of the friction of the O-ring 43.

[0091] (B) The torque limiting structure 34 of the aforementioned embodiment can also be as follows: Figure 8As shown, it also includes 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 also has a first ring mounting portion 23d. The first ring mounting portion 23d is provided on the outer peripheral surface of the shaft body 23a. The first ring mounting portion 23d is an annular groove.

[0092] The worm gear 27 also has a second ring configuration portion 27g. The second ring configuration portion 27g is provided on the inner circumferential surface of the through hole 27c. The second ring configuration portion 27g is an annular groove. The second ring configuration portion 27g is disposed radially outside the first ring configuration portion 23d.

[0093] O-ring 43 is disposed radially between the first ring configuration portion 23d and the second ring configuration portion 27g, away from the rotation axis W1 of the worm shaft 23. O-ring 43 contacts the bottom of the first ring configuration portion 23d and the bottom of the second ring configuration portion 27g. Preferably, O-ring 43 is disposed radially between the first ring configuration portion 23d and the second ring configuration portion 27g in a compressed state.

[0094] With this structure, the relaxation of the first spring portion 37 described in the above modified example (A) can be suppressed by the friction of the O-ring 43.

[0095] (C) In the foregoing embodiments, an example is shown in which the torque spring 35 is used as a friction generating component at the torque limiting structure 34. At the torque limiting structure 34, the friction generating component can be arbitrarily configured as long as it can contact at least one of the worm shaft 23 and the worm shaft gear 27.

[0096] For example, such as Figure 9 As shown, the torque spring 35 can also be omitted, and the O-ring 43 used in modified example (B) can be used as a friction generating component. In this case, the O-ring 43 is arranged in a compressed state between the first ring arrangement portion 23d and the second ring arrangement portion 27g in a radial direction away from the rotation axis W1 of the worm shaft 23.

[0097] In this structure, when the torque of the worm gear 27 is below the allowable torque, the torque of the worm gear 27 is transmitted to the worm shaft 23 via the O-ring 43. Here, when the torque of the worm gear 27 becomes greater than the allowable torque, the O-ring 43 slides relative to 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 gear 27 to the worm shaft 23. This configuration also achieves the same effect as the aforementioned embodiment.

[0098] (D) In ​​the foregoing embodiment, an example is shown where the torque spring 35 is engaged in the locking hole 27e of the worm shaft gear 27. For example... Figure 10As shown, the torque spring 35 can also be engaged with the protrusion 27h of the worm shaft gear 27. In this case, the protrusion 27h protrudes axially from the side of the gear body 27a.

[0099] The torque spring 35 has a first spring portion 37 and a locking portion 139. The structure of the first spring portion 37 is the same as that in the aforementioned embodiment. The locking portion 139 has an arm portion 39a and a hook portion 139c. The structure of the arm portion 39a is the same as that in the aforementioned embodiment.

[0100] The hook portion 139c is integrally formed with the arm portion 39a. The hook portion 139c is formed in the shape of a hook. The hook portion 139c is engaged with the protrusion 27h. This configuration can achieve the same effect as the aforementioned embodiment.

[0101] Industrial availability

[0102] This invention can be used with spinning winding wheels.

[0103] Explanation of reference numerals in the attached figures

[0104] 1 Spinning type winding reel

[0105] 3. Winding reel body

[0106] 15. Roller shaft

[0107] 25 sliders

[0108] 23 Worm Shaft

[0109] 21 Oscillating Mechanism

[0110] 27 Worm shaft gear

[0111] 27c Through Hole

[0112] 27e locking hole

[0113] 27g protrusion

[0114] 34 Torque limiting structure

[0115] 35 Torque Spring

[0116] 37. First Spring Section

[0117] 39, 139 locking parts

[0118] 39b Insertion section

[0119] 39c Claw

[0120] 41 Second Spring Section

[0121] 43, 45 O-rings

[0122] C1 First winding direction

[0123] C2 Second winding direction

[0124] R1 is the direction of the fishing line winding for the worm gear shaft.

Claims

1. A spinning type winding reel, characterized in that, It features a winding reel body, a drum shaft, a reciprocating movement mechanism, and a torque limiting structure. The aforementioned drum shaft is supported on the aforementioned winding reel body. The aforementioned reciprocating mechanism includes a slider mounted on the aforementioned drum shaft and a worm shaft that rotates to cause the aforementioned drum shaft and the aforementioned slider to reciprocate axially. The aforementioned torque limiting structure includes the aforementioned worm shaft, worm shaft gear, and friction generating component. The aforementioned worm shaft gear is rotatably supported relative to the aforementioned worm shaft. The aforementioned friction-generating component is disposed between the aforementioned worm shaft and the aforementioned worm shaft gear, and generates friction in the circumferential direction by contacting at least one of the aforementioned worm shaft and the aforementioned worm shaft gear. This friction allows or disallows torque transmission from the aforementioned worm shaft gear to the aforementioned worm shaft. In the aforementioned torque limiting structure, When the torque of the aforementioned worm gear shaft becomes below the allowable torque, the aforementioned friction force generating component allows the transmission of the aforementioned torque from the aforementioned worm gear shaft to the aforementioned worm shaft. When the torque of the aforementioned worm gear shaft becomes greater than the allowable torque, the inner circumferential surface of the aforementioned friction generating component slides on the outer circumferential surface of the aforementioned worm shaft, thereby releasing the transmission of the aforementioned torque from the aforementioned worm gear shaft to the aforementioned worm shaft, and the aforementioned worm gear shaft continuously rotates relative to the aforementioned worm shaft.

2. The spinning type winding reel as described in claim 1, characterized in that, The aforementioned friction-generating component is engaged with the aforementioned worm shaft gear and is a torque spring that is slidably disposed on the outer peripheral surface of the aforementioned worm shaft.

3. The spinning type winding reel as described in claim 2, characterized in that, The aforementioned torque spring has a first spring portion wound along the first winding direction. The first spring portion is disposed on the outer peripheral surface of the worm shaft in such a way that the first winding direction is opposite to the fishing line winding direction of the worm shaft gear.

4. The spinning type winding reel as described in claim 3, characterized in that, The aforementioned torque spring also has a second spring portion, which is wound along a second winding direction opposite to the aforementioned first winding direction and connected to the aforementioned first spring portion. The aforementioned second spring portion is arranged on the outer peripheral surface of the aforementioned worm shaft in such a way that the aforementioned second winding direction is the same as the aforementioned worm shaft gear's fishing line winding direction.

5. The spinning reel as described in any one of claims 2 to 4, characterized in that, The aforementioned worm gear shaft has a bore extending axially. The aforementioned torque spring has a locking portion that engages with the aforementioned hole.

6. The spinning type winding reel as described in claim 5, characterized in that, The aforementioned locking portion has an insertion portion that is inserted into the aforementioned hole and a claw portion that extends from the aforementioned insertion portion along the side of the aforementioned worm shaft gear.

7. The spinning reel as described in any one of claims 2 to 4, characterized in that, The aforementioned worm gear shaft has a protrusion that extends axially. The aforementioned torque spring has a locking portion that engages with the aforementioned protrusion.

8. The spinning reel as described in any one of claims 1 to 4, characterized in that, The aforementioned worm shaft gear has a through hole for the aforementioned worm shaft to be inserted. The aforementioned torque limiting structure also includes an O-ring disposed between the outer peripheral surface of the aforementioned worm shaft and the inner peripheral surface of the aforementioned through hole.

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