Drive gear for fishing reel

Abstract

The present application provides a drive gear of a fishing reel. The drive gear (11) has a circular plate portion (30) and a plurality of gear teeth (31). The circular plate portion (30) has a rotational axis (X). The plurality of gear teeth (31) respectively protrude from a side surface on an outer peripheral side of the circular plate portion (30) in a direction extending toward the rotational axis (X). The gear teeth (31) have a main body portion (32) and an extension portion (33). A first angle (a11, a12) formed by a cylindrical surface (CP1) passing through a tooth top surface (31c) of the main body portion (32) and a radially inner side surface (31d) of the extension portion (33) is larger than an engagement pressure angle (b). Accordingly, the present application provides a drive gear of a fishing reel capable of improving a rotation feeling.

Description

TECHNICAL FIELD

[0001] The present application relates to a drive gear of a fishing reel. BACKGROUND

[0002] The drive gear of the related art has a plurality of gear teeth. Each gear tooth of the drive gear of the related art has a pair of tooth surfaces. Each tooth surface is engaged with a pinion gear. A rotational direction engagement line L1 and a plurality of simultaneous engagement contact lines L2 intersecting the rotational direction engagement line L1 are defined on each tooth surface (refer to the description of the present application Figure 9 ).

[0003] Here, the rotational direction engagement line L1 is a line formed by connecting the highest position of each tooth surface on the plurality of simultaneous engagement contact lines L2. The plurality of simultaneous engagement contact lines L2 are each a line at which the pinion gear contacts the tooth surface of the drive gear.

[0004] [Related Art Document]

[0005] [Patent Document]

[0006] Patent Document 1: Japanese Patent Publication No. 6202796 SUMMARY

[0007] [Problems to be Solved by the Invention]

[0008] In the drive gear of the related art, the rotational direction engagement line L1 extends from the base end on the outer circumferential side of the gear tooth to the tooth tip on the inner circumferential side of the gear tooth.

[0009] In this state, in the case where the pinion gear is engaged with the tooth tip on the inner circumferential side of the gear tooth, that is, in the case where the pinion gear is engaged with the corner portion QR on the inner circumferential side of the tooth surface of which the simultaneous engagement contact line L2 is short, stress concentration occurs at the corner portion QR of the tooth tip on the inner circumferential side of the gear tooth of the drive gear. Figure 9

[0010] In this case, there is a concern that the bending moment acting on the base end portion of the gear tooth becomes large and the gear tooth is deformed. In this regard, there is a concern that the drive gear cannot be smoothly rotated. In addition, in the case where the drive gear cannot be smoothly rotated, there is a concern that an abnormal noise is emitted when the drive gear is rotated while being engaged with the pinion gear.

[0011] The present application has been made in view of the above-described circumstances, and an object of the present application is to provide a drive gear of a fishing reel capable of improving the rotation feeling. In addition, an object of the present application is to provide a drive gear of a fishing reel capable of suppressing an abnormal noise generated at the time of rotation.[Technical Solution to Solve the Problem]

[0012] ​A drive gear of a fishing reel according to one aspect of the present invention is a drive gear used in a fishing reel. The drive gear of the fishing reel has a circular plate portion and a plurality of gear teeth. The circular plate portion has a rotational axis. The plurality of gear teeth each protrude in a direction extending from a side surface on an outer circumferential side of the circular plate portion toward the rotational axis.

[0013] The gear tooth has a main portion and an extension portion extending from the main portion toward a radially inner side. A first angle formed by an axially outer side surface of the main portion and a radially inner side surface of the extension portion is larger than a meshing pressure angle.

[0014] In the present drive gear, the extension portion extends from the main portion toward the radially inner side on the gear tooth. Here, the first angle is larger than the meshing pressure angle. In this way, by providing the extension portion on the gear tooth and making the first angle larger than the meshing pressure angle, stress generated at a corner portion on an inner circumferential side of a tooth tip of the gear tooth can be made smaller than that in the prior art. Accordingly, rotation feeling of the drive gear can be improved. In addition, by improving the rotation feeling of the drive gear, an abnormal sound generated when the drive gear rotates can be suppressed.

[0015] In a drive gear of a fishing reel according to another aspect of the present invention, a first angle is larger than a second angle formed by an axially outer side surface of the main portion and a radially outer side surface of the main portion.

[0016] In this case, since the first angle is larger than the second angle, rotation feeling of the drive gear can be appropriately improved. In addition, an abnormal sound generated when the drive gear rotates can be appropriately suppressed.

[0017] In a drive gear of a fishing reel according to another aspect of the present invention, a pair of tooth surfaces are formed on the main portion and the extension portion so as to be spaced apart from each other in a circumferential direction. The tooth surfaces have a first end edge extending in a tooth trace direction on a base end side of the gear tooth and a second end edge extending in the tooth trace direction on a tip end side of the gear tooth. The first end edge is longer than the second end edge.

[0018] In this case, since the first end edge is longer than the second end edge, deformation of the gear tooth can be suppressed. Accordingly, rotation feeling of the drive gear can be appropriately improved. In addition, an abnormal sound generated when the drive gear rotates can be appropriately suppressed.

[0019] In a drive gear of a fishing reel according to another aspect of the present invention, a ratio of the first end edge to the second end edge is 1.28 or more. Accordingly, rotation feeling of the drive gear can be further appropriately improved. In addition, an abnormal sound generated when the drive gear rotates can be further appropriately suppressed.

[0020] In the drive gear of the fishing reel according to the present application, the tooth surface further has a third end edge and a fourth end edge, wherein the third end edge connects the first end edge and the second end edge on the radially inner side of the gear tooth, and the fourth end edge connects the first end edge and the second end edge on the radially outer side of the gear tooth. The third end edge is longer than the fourth end edge.

[0021] In this case, by making the third end edge longer than the fourth end edge, the simultaneous meshing contact line at the corner portion on the inner peripheral side of the addendum of the gear tooth can be made longer than in the prior art. Accordingly, the rotation feeling of the drive gear can be appropriately improved. In addition, the abnormal noise generated when the drive gear rotates can be appropriately suppressed.

[0022] In the drive gear of the fishing reel according to the present application, the ratio of the third end edge to the fourth end edge is 1.10 or more. Accordingly, the rotation feeling of the drive gear can be further appropriately improved. In addition, the abnormal noise generated when the drive gear rotates can be further appropriately suppressed.

[0023] The fishing reel according to the present application has a fishing reel main body, a handle, and the above-described drive gear, wherein the handle is rotatably supported to the fishing reel main body, and the above-described drive gear is rotated by rotation of the handle. The same effects as those of the above-described drive gear can be obtained in the fishing reel according to the present application.

[0024] [Effects of the Invention]

[0025] According to the present application, the rotation feeling of the drive gear of the fishing reel can be improved. In addition, the abnormal noise generated when the drive gear of the fishing reel rotates can be suppressed. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a sectional view of a spinning reel according to an embodiment of the present application.

[0027] Figure 2 is a sectional view of Figure 1 .

[0028] Figure 3 is a perspective exploded view of a rotor drive mechanism.

[0029] Figure 4 is a plan view of the rotor drive mechanism.

[0030] Figure 5 is a perspective view of a gear tooth of a drive gear.

[0031] Figure 6A is a side view of the gear tooth of the drive gear.

[0032] Figure 6Bis a side view of a gear tooth of a drive gear.

[0033] Figure 6C is Figure 5 is a cross-sectional view of a cutting line VIC of

[0034] Figure 7 is Figure 6A is a cross-sectional view of a plane C passing through the meshing end point P of

[0035] Figure 8A is a side view showing a region of a gear tooth of a drive gear that is not used for meshing.

[0036] Figure 8B is a side view showing a region of a gear tooth of a drive gear that is not used for meshing.

[0037] Figure 9 is a reference diagram for explaining the related art.

[0038] [Legend]

[0039] 11: drive gear; 30: circular plate portion; 31: gear tooth; 31a: first side surface; 31b: second side surface; 31c: addendum surface; 31d: radially inner side surface; 31e: radially outer side surface; 32: main body portion; 33: extension portion; B1: first end edge; B2: second end edge; B3: third end edge; B4: fourth end edge; a11, a12: first angle; a21, a22: second angle; b: meshing pressure angle. DETAILED DESCRIPTION

[0040] As shown in Figure 1 , a spinning reel 100 (an example of a fishing reel) employing an embodiment of the present application has a handle 1, a reel body 2 that rotatably supports the handle 1, a rotor 3, and a spool 4. The rotor 3 is rotatably supported at a front portion of the reel body 2.

[0041] The handle 1 has a handle shaft 1a, a handle arm 1b, and a handle grip 1c. A drive shaft 10 is connected to the handle shaft 1a so as to be rotatable integrally with the handle shaft 1a. The handle arm 1b is provided to the handle shaft 1a. The handle grip 1c is provided to the handle arm 1b. Further, the handle 1 can be installed on either of left and right sides of the reel body 2.

[0042] Fishing line is wound around the outer circumference of the spool 4. The spool 4 is positioned at the front of the rotor 3 in a manner that allows it to move freely back and forth. The spool 4 is mounted at the top of the spool shaft 15. The spool shaft 15 has a spool axis X1. The rotor 3 is connected to the pinion 12 in a manner that allows it to rotate integrally with the pinion 12. The rotor 3 is supported on the fishing reel body 2 in a manner that allows it to rotate relative to the fishing reel body 2.

[0043] <Structure of the main body of the fishing reel>

[0044] like Figure 1 As shown, the fishing reel body 2 has a reel body 2a and a cover component 2b. Figure 2 The fishing reel body 2a has an internal storage space with an opening on the side; the cover component 2b is detachably mounted to the fishing reel body 2a and is used to block the storage space of the fishing reel body 2a. In addition, the fishing reel body 2 has a main body cover 26 that covers the rear of the fishing reel body 2a and the cover component 2b.

[0045] A rod mounting leg 2c is integrally formed on the fishing reel body 2a. Inside the fishing reel body 2a are a rotor drive mechanism 5 and a swing mechanism 6. The swing mechanism 6 is used to move the spool shaft 15 in the front-to-back direction. Through the operation of the swing mechanism 6, the spool 4 moves in the front-to-back direction. Since the structure of the swing mechanism 6 is substantially the same as that of existing swing mechanisms, its description is omitted here.

[0046] <Structure of Rotor Drive Mechanism>

[0047] The rotor drive mechanism 5 transmits the rotation of the handle 1 to the rotor 3. For example... Figure 2 and Figure 3 As shown, the rotor drive mechanism 5 has a drive gear 11 and a pinion 12. The drive gear 11 rotates integrally with the drive shaft 10. The pinion 12 meshes with the drive gear 11.

[0048] like Figure 3 As shown, the pinion 12 has a cylindrical gear body 12a and a gear portion 12b. The gear body 12a is arranged on the fishing reel body 2a in a manner that intersects with the handle shaft 1a. More specifically, the gear body 12a is arranged on the fishing reel body 2a in a manner that intersects with the rotation axis X of the drive gear 11.

[0049] The gear body 12a is rotatably supported on the fishing reel body 2a. For example, the gear body 12a is rotatably supported on the fishing reel body 2a by bearings 14a and 14b. A through hole 12d is formed on the gear body 12a, through which the spool shaft 15 can be inserted.

[0050] An external thread 12e and an anti-rotation plane 12f are formed on the gear body 12a. By engaging the external thread 12e and the anti-rotation plane 12f with the rotor 3, the gear body 12a is connected to the rotor 3 in a manner that allows it to rotate integrally with the rotor 3. A gear portion 12b is formed on the gear body 12a.

[0051] like Figure 2 As shown, the drive gear 11 is integrally formed with the drive shaft 10. The drive gear 11 can also be formed independently of the drive shaft 10. The drive shaft 10 rotates integrally with the handle shaft 1a via a threaded connection. The drive shaft 10 can also rotate integrally with the handle shaft 1a via a non-circular engagement. The drive shaft 10 is rotatably mounted to the fishing reel body 2a via a bearing 27a mounted on the cover component 2b and a bearing 27b mounted on the fishing reel body 2a.

[0052] In this embodiment, such as Figure 2 , Figure 3 and Figure 4 As shown, the drive gear 11 is a face gear. The drive gear 11 has a circular plate portion 30 and a plurality of gear teeth 31. The circular plate portion 30 has a rotation axis X. The circular plate portion 30 is formed in the shape of a circular plate. The circular plate portion 30 is integrally formed with the drive shaft 10. The circular plate portion 30 may also be formed independently of the drive shaft 10.

[0053] like Figure 2 and Figure 3 As shown, a plurality of gear teeth 31 protrude from the outer peripheral side surface of the circular plate portion 30 in a direction extending toward the rotation axis X. For example, the plurality of gear teeth 31 are integrally formed on the outer peripheral side surface of the circular plate portion 30. The plurality of gear teeth 31 are formed at predetermined intervals along the circumferential direction on the outer peripheral side of one side surface of the circular plate portion 30. The circumferential direction is the direction around the rotation axis X with reference to the rotation axis X.

[0054] like Figure 5 As shown, each gear tooth 31 has a main body portion 32 and an extension portion 33. The main body portion 32 forms a radially outer portion on the gear tooth 31. In detail, the main body portion 32 forms a radially central portion and a radially outer portion. The main body portion 32 has a tooth tip surface 31c (an example of an axially outer surface) and a radially outer surface 31e. The main body portion 32 forms a portion of a first side surface 31a and a portion of a second side surface 31b.

[0055] like Figure 5As shown, the extension portion 33 is a portion extending from the main body portion 32 to the radially inner side. The extension portion 33 forms a radially inner side portion of the gear tooth 31. The extension portion 33 has a radially inner side surface 31d. The extension portion 33 forms a portion of the first side surface 31a and a portion of the second side surface 31b. The first side surface 31a and the second side surface 31b form a pair of side surfaces of the main body portion 32 and a pair of side surfaces of the extension portion 33.

[0056] Further, in Figure 5 , the boundary between the extension portion 33 and the main body portion 32 is indicated by a broken line. The plane indicated by the broken line is perpendicular with respect to the circular plate portion 30. The plane passes through the corner portion of the addendum surface 31c and the radially inner side surface 31d. In the Figure 6B and Figure 6C described later, the broken line has the same meaning.

[0057] Each of the gear teeth 31 has the first side surface 31a, the second side surface 31b, the addendum surface 31c, the radially inner side surface 31d, and the radially outer side surface 31e. The first side surface 31a and the second side surface 31b are an example of a pair of tooth surfaces.

[0058] The first side surface 31a is a tooth surface that engages with the pinion gear 12 when the handle 1 is turned in the winding direction. The second side surface 31b is a tooth surface that engages with the pinion gear 12 when the handle 1 is turned in the unwinding direction.

[0059] The first side surface 31a and the second side surface 31b form a pair of side surfaces of the gear tooth 31. For example, the first side surface 31a and the second side surface 31b form a pair of side surfaces of the main body portion 32 and the extension portion 33. The first side surface 31a and the second side surface 31b are formed on the main body portion 32 and the extension portion 33 so as to be spaced apart from each other in the circumferential direction. The first side surface 31a and the second side surface 31b each have a first end edge B1 and a second end edge B2.

[0060] The first end edge B1 of the first side surface 31a extends in the tooth line direction on the base end side of the gear tooth 31. The first end edge B1 of the first side surface 31a is formed by a corner portion of the first side surface 31a and a side surface of the circular plate portion 30.

[0061] The second end edge B2 of the first side surface 31a extends in the tooth line direction on the top end side of the gear tooth 31. The second end edge B2 of the first side surface 31a is formed by a corner portion of the first side surface 31a and the addendum surface 31c.

[0062] The first end edge B1 of the second side surface 31b extends in the tooth trace direction on the base end side of the gear tooth 31. The first end edge B1 of the second side surface 31b is formed by a corner portion of the second side surface 31b and a side surface of the circular plate portion 30. The first end edge B1 of the second side surface 31b is disposed apart in the circumferential direction from the first end edge B1 of the first side surface 31a.

[0063] The second end edge B2 of the second side surface 31b extends in the tooth trace direction on the top end side of the gear tooth 31. The second end edge B2 of the second side surface 31b is formed by a corner portion of the second side surface 31b and the addendum face 31c. The second end edge B2 of the second side surface 31b is disposed apart in the circumferential direction from the second end edge B2 of the first side surface 31a. It can also be interpreted that the second end edge B2 of the first side surface 31a and the second end edge B2 of the second side surface 31b are also included in the addendum face 31c.

[0064] The first side surface 31a and the second side surface 31b also have a third end edge B3 and a fourth end edge B4. The third end edge B3 of the first side surface 31a connects the first end edge B1 of the first side surface 31a and the second end edge B2 of the first side surface 31a on the radially inner side of the gear tooth 31. The third end edge B3 of the first side surface 31a is formed by a corner portion of the first side surface 31a and the radially inner side surface 31d.

[0065] The fourth end edge B4 of the first side surface 31a connects the first end edge B1 of the first side surface 31a and the second end edge B2 of the first side surface 31a on the radially outer side of the gear tooth 31. The fourth end edge B4 of the first side surface 31a is formed by a corner portion of the first side surface 31a and the radially outer side surface 31e.

[0066] The third end edge B3 of the second side surface 31b connects the first end edge B1 of the second side surface 31b and the second end edge B2 of the second side surface 31b on the radially inner side of the gear tooth 31. The third end edge B3 of the second side surface 31b is formed by a corner portion of the second side surface 31b and the radially inner side surface 31d.

[0067] The third end edge B3 of the second side surface 31b is disposed apart in the circumferential direction from the third end edge B3 of the first side surface 31a. It can also be interpreted that the third end edge B3 of the first side surface 31a and the third end edge B3 of the second side surface 31b are also included in the radially inner side surface 31d.

[0068] The fourth end edge B4 of the second side surface 31b connects the first end edge B1 of the second side surface 31b and the second end edge B2 of the second side surface 31b on the radially outer side of the gear tooth 31. The fourth end edge B4 of the second side surface 31b is formed by a corner portion of the second side surface 31b and the radially outer side surface 31e.

[0069] The fourth end edge B4 of the second side surface 31b is disposed at a circumferentially spaced interval from the fourth end edge B4 of the first side surface 31a. It can also be explained that the fourth end edge B4 of the first side surface 31a and the fourth end edge B4 of the second side surface 31b are also included in the radially outer side surface 31e.

[0070] The tooth tip surface 31c forms a top end surface of the gear tooth 31. For example, the tooth tip surface 31c forms a top end surface of the main body portion 32. The tooth tip surface 31c is connected to the radially inner side surface 31d and the radially outer side surface 31e. The tooth tip surface 31c is connected to the first side surface 31a and the second side surface 31b. In detail, the tooth tip surface 31c forms an outer surface of the gear tooth 31 (the main body portion 32) between the second end edge B2 of the first side surface 31a and the second end edge B2 of the second side surface 31b.

[0071] The radially inner side surface 31d forms an outer surface on a side close to the rotational axis X of the gear tooth 31. For example, the radially inner side surface 31d forms an outer surface on a radially inner side of the extension portion 33. The radially inner side surface 31d is connected to the tooth tip surface 31c and the side surface of the circular plate portion 30. The radially inner side surface 31d is connected to the first side surface 31a and the second side surface 31b. In detail, the radially inner side surface 31d forms an outer surface of the gear tooth 31 (the extension portion 33) between the third end edge B3 of the first side surface 31a and the third end edge B3 of the second side surface 31b.

[0072] The radially outer side surface 31e forms an outer surface on a side away from the rotational axis X of the gear tooth 31. For example, the radially outer side surface 31e forms an outer surface on a radially outer side of the main body portion 32. The radially outer side surface 31e is connected to the tooth tip surface 31c and the circular plate portion 30. The radially outer side surface 31e is connected to the first side surface 31a and the second side surface 31b. In detail, the radially outer side surface 31e forms an outer surface of the gear tooth 31 (the main body portion 32) between the fourth end edge B4 of the first side surface 31a and the fourth end edge B4 of the second side surface 31b.

[0073] Each gear tooth 31 having the above-described structure is configured as follows. Figure 6A and Figure 6B is a view when each gear tooth 31 is viewed from the outside in the circumferential direction R1 (refer to Figure 5 ).

[0074] As indicated by the dotted arrows of Figure 6A , the engagement pressure angle b gradually decreases from the radially outer side toward the radially inner side. For example, the engagement pressure angle b gradually decreases from the radially outer side toward the radially inner side along the first end edge B1, from the first end edge B1 toward the second end edge B2, and along the second end edge B2 toward the radially inner side.

[0075] In Figure 6AIn the diagram, the engagement end point is indicated by the reference numeral P. Here, the intersection of the second end edge B2 and the third end edge B3 is called the engagement end point P. The engagement end point P is the point where the engagement pressure angle β becomes minimal. Figure 6A In this context, a plane C passing through the engagement end point P is defined. The plane C passes through the engagement end point P, is perpendicular to the side surface of the circular plate portion 30, and extends in the circumferential direction R1.

[0076] Here, as Figure 7 As shown, in plane C (reference) Figure 6A In the cross-section of the gear teeth 31, the meshing pressure angle b is formed by a plane P1 passing through the meshing end point P and parallel to the circular plate portion 30, and a plane P2 perpendicular to the first side surface 31a at the meshing end point P. Figure 7 The angle formed by the line perpendicular to the line representing the first side surface 31a.

[0077] like Figure 6B As shown, the first angle a11 is greater than the meshing pressure angle b (refer to...). Figure 7 Large. The first angle a11 is in the circumferential direction R1 (refer to). Figure 5 When viewing each gear tooth 31 from the outside, the angle is formed by the cylindrical surface CP1 about the rotation axis X2 and the third end edge B3. Furthermore, the first angle a11 is larger than the second angle a21. The second angle a21 is the angle formed by the cylindrical surface CP2 about the rotation axis X2 and the fourth end edge B4. The cylindrical surfaces CP1 and CP2 pass through the second end edge B2 (the tooth tip surface 31c of the main body 32).

[0078] Figure 6C It is a surface that includes the second end edge B2 on the side of the first side surface 31a on the tooth tip surface 31c and extends axially (refer to...). Figure 5 The section line VIC cuts through the cross-section of each gear tooth 31. This can also be interpreted as the surface (refer to...) Figure 5 The section line (VIC) is a surface that includes the second end edge B2 of the tooth tip surface 31c and is perpendicular to the circular plate portion 30. Furthermore, when the second end edge B2 is a straight line, this surface (refer to...) Figure 5 The section line VIC is a plane. When the second end edge B2 is a curve, this plane (refer to...) Figure 5 The section line (VIC) is a curved surface.

[0079] exist Figure 6C In the cross-section, the first angle a12 is greater than the meshing pressure angle b (refer to...). Figure 7) large. The first angle a12 is an angle formed by the cylindrical surface CP1 around the rotational axis X2 and the radially inner surface 31d of the extension 33. In addition, the first angle a12 is larger than the second angle a22. The second angle a22 is an angle formed by the cylindrical surface CP2 around the rotational axis X2 and the radially outer surface 31e of the main body portion 32. The cylindrical surfaces CP1, CP2 pass through the tooth tip surface 31c (the second end edge B2) of the main body portion 32.

[0080] In addition, as shown in Figure 6A and Figure 6B , the first end edge B1 of the first side surface 31a is longer than the second end edge B2 of the first side surface 31a. For example, the ratio of the first end edge B1 of the first side surface 31a to the second end edge B2 of the first side surface 31a is 1.28 or more. Specifically, it is preferable that the ratio of the first end edge B1 of the first side surface 31a to the second end edge B2 of the first side surface 31a be 1.28 or more and "1.50 or less".

[0081] Similarly, the first end edge B1 of the second side surface 31b is longer than the second end edge B2 of the second side surface 31b. For example, the ratio of the first end edge B1 of the second side surface 31b to the second end edge B2 of the second side surface 31b is 1.28 or more. Specifically, it is preferable that the ratio of the first end edge B1 of the second side surface 31b to the second end edge B2 of the second side surface 31b be 1.28 or more and "1.50 or less".

[0082] In addition, as shown in Figure 6A and Figure 6B , the third end edge B3 of the first side surface 31a is longer than the fourth end edge B4 of the first side surface 31a. For example, the ratio of the third end edge B3 of the first side surface 31a to the fourth end edge B4 of the first side surface 31a is 1.10 or more. Specifically, it is preferable that the ratio of the third end edge B3 of the first side surface 31a to the fourth end edge B4 of the first side surface 31a be 1.10 or more and "1.50 or less".

[0083] Similarly, the third end edge B3 of the second side surface 31b is longer than the fourth end edge B4 of the second side surface 31b. For example, the ratio of the third end edge B3 of the second side surface 31b to the fourth end edge B4 of the second side surface 31b is 1.10 or more. Specifically, the ratio of the third end edge B3 of the second side surface 31b to the fourth end edge B4 of the second side surface 31b is 1.10 or more and "1.50 or less".

[0084] In the drive gear 11 of the reel 100 described above, the extension 33 extends from the main body portion 32 to the radially inner side on each gear tooth 31. Here, the first angles a11, a12 are larger than the mesh pressure angle b. Furthermore, in the related art, the extension 33 is not formed on each gear tooth 31, and only the main body portion 32 is formed.

[0085] Thus, the extension 33 is provided on each gear tooth 31, and the first angles a11, a12 are made larger than the meshing pressure angle b, whereby the stress generated at the corner portion on the inner peripheral side of the addendum of each gear tooth 31, for example, the stress generated at the corner portion having the first angles a11, a12, can be made smaller than the stress generated in the prior art.

[0086] Accordingly, the rotation feeling of the drive gear 11 can be improved. In addition, by improving the rotation feeling of the drive gear 11, the abnormal noise generated when the drive gear 11 rotates can be suppressed.

[0087] In addition, in the drive gear 11, the first angles a11, a12 are larger than the second angles a21, a22. Accordingly, the rotation feeling of the drive gear 11 can be appropriately improved. In addition, the abnormal noise generated when the drive gear 11 rotates can be appropriately suppressed.

[0088] In addition, in the drive gear 11, the first end edge B1 is longer than the second end edge B2. Specifically, in the drive gear 11, the ratio of the first end edge B1 to the second end edge B2 is 1.28 or more. Accordingly, the deformation of each gear tooth 31 can be suppressed. Accordingly, the rotation feeling of the drive gear 11 can be further appropriately improved. In addition, the abnormal noise generated when the drive gear 11 rotates can be further appropriately suppressed.

[0089] In addition, in the drive gear 11, the third end edge B3 is longer than the fourth end edge B4. Specifically, in the drive gear 11, the ratio of the third end edge B3 to the fourth end edge B4 is 1.10 or more. Accordingly, the rotation feeling of the drive gear 11 can be further appropriately improved. In addition, the abnormal noise generated when the drive gear 11 rotates can be further appropriately suppressed.

[0090] <Other Embodiments>

[0091] The above describes one embodiment of the present application, but the present application is not limited to the above-described embodiment, and various modifications can be made within the scope of the gist of the present application. In particular, the plurality of embodiments and modified examples described in the present specification can be arbitrarily combined as needed.

[0092] (a) The drive gear 11 of the above-described embodiment can be formed by molding, can be formed by machining, or can be formed by press working.

[0093] (b) In the above-described embodiment, the spinning reel 100 is described as being used as a fishing reel, but the present application is also applicable to other fishing reels.

[0094] (c) In the above embodiment, an example is shown in which the engagement end point P is the intersection of the second end edge B2 and the third end edge B3. In this case, for example, as shown in Figure 8A the region NR1 (dotted line region) not used for engagement is formed on the first side surface 31a other than the intersection of the second end edge B2 and the third end edge B3.

[0095] On the contrary, as shown in Figure 8B the region NR2 (dotted line region) not used for engagement can also be formed on the first side surface 31a including the intersection of the second end edge B2 and the third end edge B3. In this case, the engagement end point P is formed on the second end edge B2 other than the intersection of the second end edge B2 and the third end edge B3.

[0096] In this way, the engagement end point P is provided on the second end edge B2 at a position away from the regions NR1, NR2 (dotted line regions) not used for engagement. Even if configured as above, the gear teeth 31 are formed in the same manner as in the above embodiment in terms of the relationship of the first angles a11, a12, the second angles a21, a22, and the engagement pressure angle b.

Claims

1. A drive gear of a fishing reel for a fishing reel, The drive gear of the fishing reel is characterized in that has a circular plate portion and a plurality of gear teeth, wherein the circular plate portion has a rotational axis; a plurality of the gear teeth respectively protrude from a side surface of an outer peripheral side of the circular plate portion in a direction toward the rotational axis; the gear teeth have a main portion and an extension portion that extends from the main portion toward a radially inner side, a first angle formed by a cylindrical surface around the rotational axis passing through an axial outer side surface of the main portion and a radially inner side surface of the extension portion is larger than a meshing pressure angle, a pair of tooth surfaces of the gear teeth are formed on the main portion and the extension portion so as to be spaced apart from each other in a circumferential direction, the tooth surfaces have a first end edge that extends in a tooth line direction on a base end side of the gear tooth, the first end edge is formed by the main portion and the extension portion.

2. The drive gear of the fishing reel according to claim 1, characterized in that the first angle is larger than a second angle formed by the cylindrical surface and an axial outer side surface of the main portion.

3. The drive gear of the fishing reel according to claim 1, characterized in that the tooth surfaces further have a second end edge that extends in the tooth line direction on a tip end side of the gear tooth, the first end edge is longer than the second end edge.

4. The drive gear of the fishing reel according to claim 2, characterized in that the tooth surfaces further have a second end edge that extends in the tooth line direction on a tip end side of the gear tooth, the first end edge is longer than the second end edge.

5. The drive gear of the fishing reel according to claim 3, characterized in that a ratio of the first end edge to the second end edge is 1.28 or more.

6. The drive gear of the fishing reel according to claim 3, characterized in that the tooth surfaces further have a third end edge and a fourth end edge, wherein the third end edge connects the first end edge and the second end edge on a radially inner side of the gear tooth; and the fourth end edge connects the first end edge and the second end edge on a radially outer side of the gear tooth, the third end edge is longer than the fourth end edge.

7. The drive gear of the fishing reel according to claim 6, characterized in that a ratio of the third end edge to the fourth end edge is 1.10 or more.

8. The drive gear of the fishing reel according to any one of claims 1 to 7, characterized in that the tooth surface of the main portion and the tooth surface of the extension portion are formed to be coplanar.

9. A fishing reel characterized by having a reel main body, a handle, and the drive gear according to any one of claims 1 to 8, wherein the handle is rotatably supported to the reel main body; the drive gear is rotated by rotation of the handle.

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