JP2007259713A - Fishing spinning reel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fishing spinning reel which effectively improves a meshing state between a pinion gear and a face gear while preventing reduction in tooth strength of the face gear meshed with the pinion gear, thereby obtains smoothly winding rotation performance and has high durability. <P>SOLUTION: In the fishing spinning reel related to one embodiment, a flank portion 22 for avoiding the direct sliding contact of the pinion gear 13 with a reverse rotation side tooth face 13b is formed at the outer peripheral end part of the reverse rotation side tooth face 3b of the drive gear (face gear) 3. Therefore, the meshing state between the pinion gear 13 and the drive gear 3, especially from the external corner part in the radial direction of the reverse rotation side tooth face toward the inside in the radial direction, is allowed at the flank portion 22 and smoothly moved even in meshing error and occurrence of deformation during a high-load winding. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fishing spinning reel provided with a drive mechanism for rotating a rotor having a fishing line guide portion in conjunction with rotation of a handle.

  In general, in a winding drive mechanism of a spinning reel for fishing, a curved line in which a tooth line is bent and twisted on a handle shaft rotatably supported by a reel body constituted by a reel body and a lid. A face gear having teeth on the outer peripheral end face is provided, and the face gear is meshed with a pinion gear on a rotor shaft (rotating shaft) that is offset and orthogonal to the handle shaft. Thus, a rotor driving mechanism is configured in which the rotor is driven to rotate by the rotation of the handle (see, for example, Patent Document 1).

  Further, in the above configuration, the tooth shape of the face gear is determined by a molding method using a molding die created by electric discharge machining of a die electrode having a tooth shape on the die, or by a hobbed pinion cutter. It is formed by a cutting method, and is determined by the distance (offset amount) between the rotation shaft cores of both the pinion gear and the face gear and the angle of the helical teeth of the pinion gear.

JP 2002-17213 A

  As described above, the face gear that meshes with the pinion gear and is rotationally driven is provided on the handle shaft that is offset and orthogonal to the rotor shaft on which the pinion gear is mounted. Reduced dimensional accuracy and errors during manufacture and assembly of the reel body that supports the rotating shaft such as the handle shaft affect the meshing state of the face gear and pinion gear (meshing error), and smooth rotation performance is stabilized. It is difficult to get. Similarly, when the tooth shape changes due to the high-load take-up drive, the meshing state of both gears similarly deteriorates.

  In addition, the deterioration of the meshing state (for example, collision of the tooth surface corners or lack of meshing smoothness due to one-sided contact) due to the effects of dimensional errors in the manufacturing stage and deformation at the time of high load winding is prevented. As one of the improvement methods, there is a case where crowning, which is a modification that escapes the tooth width in the direction of the tooth trace, is applied. In this crowning, the tooth profile of the gear having a curved tooth shape is twisted. Part of the face gear that may cause the effect of modifying the meshing state with the pinion gear in the actual face gear, in particular, which may cause an inconvenient direct sliding contact with the tooth surface of the pinion gear, Specifically, the tooth tip of the tooth surface opposite to the tooth surface of the face gear that meshes with the pinion gear during the fishing line winding operation (the tooth surface facing the rotation direction of the face gear during the fishing line winding operation). It is difficult to sufficiently obtain the position, therefore, it is difficult to effectively improve the meshing state between the face gear and the pinion gear. Further, in the crowning, since the tooth surface is cut more than necessary, there is a possibility that the strength of the teeth may be reduced, and there remains a problem such as inferior durability during high-load winding.

  The present invention has been made paying attention to the above circumstances, the purpose of which can effectively improve the meshing state of both gears while preventing a reduction in the tooth strength of the face gear meshing with the pinion gear, Accordingly, it is an object of the present invention to provide a fishing spinning reel with high durability that can obtain smooth winding rotation performance.

  In order to solve the above-described problems, the present invention provides a fishing spinning spinning reel in which a driving mechanism coupled to a handle shaft is provided on a reel body to rotationally drive a rotor having a fishing line guide. Has a face gear that is provided on the handle shaft and meshes with a pinion gear that rotates integrally with the rotor, and each tooth of the face gear faces in the direction of rotation of the face gear during the fishing line winding operation. A first tooth surface and a second tooth surface located on the opposite side of the first tooth surface, and a tooth surface of the pinion gear at an outer peripheral side end of the second tooth surface. An escape portion for avoiding direct sliding contact with is formed.

  The above configuration is particularly beneficial when the handle shaft is disposed in a state that is offset and orthogonal to the rotor shaft on which the pinion gear is mounted.

  According to the present invention, it is possible to effectively improve the meshing state of both gears while preventing a reduction in the tooth strength of the face gear meshing with the pinion gear, and thereby to obtain a smooth winding rotation performance. A high fishing spinning reel can be provided.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a fishing spinning reel 1 according to an embodiment of the present invention includes a reel body 1a, a leg portion 1b extending from the reel body 1a, and an end portion of the leg portion 1b. And a rod attachment portion 1c attached to a fishing rod (not shown). A handle shaft 2 to which the handle 5 is fixed is rotatably supported in the reel body 1a. A drive gear 3 as a face gear is fixed to the handle shaft 2, and a tubular pinion gear 13 is engaged with the drive gear 3. The pinion gear 13 is formed integrally with a tubular rotor shaft 27 that extends in a direction orthogonal to the handle shaft 2 and is rotatably supported on the reel body 1 a via a bearing 19. A rotor 8 having a bale 6 and a fishing line guide device 15 is integrally attached to the part.

  A spool shaft 9 extending in a direction orthogonal to the handle shaft 2 passes through the pinion gear 13 and the rotor shaft 27. In this case, the spool shaft 9 is arranged concentrically with the pinion gear 13 and can move back and forth along a direction orthogonal to the handle shaft 2. A spool 10 around which a fishing line is wound is attached to the tip of the spool shaft 9.

  Further, an oscillating mechanism 19 (not shown) is engaged with the drive gear 3 via a pinion gear 13. The oscillating mechanism 19 meshes with the pinion gear 13 and rotates with a worm shaft (traverse cam shaft) 19a, and meshes with a groove of the worm shaft 19a and is attached to the spool shaft 9 so as not to move in the axial direction. When the handle shaft 2 is rotated by the rotation operation of the handle 5, the spool shaft 9 is driven to reciprocate (back and forth) along the axial direction.

  In such a configuration, when the handle 5 is rotated to rotate the handle shaft 2, the spool 10 attached to the spool shaft 9 reciprocates back and forth via the oscillating mechanism 19, and the drive gear 3 and the pinion. The rotor 8 is rotationally driven via the gear 13. Therefore, the fishing line is evenly wound around the spool 10 via the fishing line guide device 15.

  As clearly shown in FIG. 2, the handle shaft 2 on which the drive gear 3 is mounted is arranged in an offset and orthogonal state with respect to the rotor shaft 9 on which the pinion gear 13 is mounted, and the handle 5 Is extended so as to cross the spool shaft 9 in the reel body 1a. Specifically, both side portions of the handle shaft 2 are rotatably supported by the reel body 1a via bearings 41 and 42, and the left and right end portions 2b and 2c of the handle shaft 2 to which the handle 5 is fixed are provided on the reel Positioned in openings 50 and 50 formed on the left and right sides of the reel body 1a so as to face both the left and right sides of the body 1a. A female screw 51 is formed in the openings 50, 50 of the reel body 1 a, and a lid 40 for closing the opening 50 is screwed into the female screw 51.

  As clearly shown in FIGS. 3 to 5, the drive gear 3 has a plurality of teeth 3 </ b> A at a predetermined pitch on the outer periphery. Similarly, the pinion gear 13 has a plurality of teeth 13A meshing with the teeth 3A of the drive gear 3 at a predetermined pitch on the outer periphery. Each tooth 3A of the drive gear 3 is a forward rotation side tooth surface (first tooth surface) facing the rotation (forward rotation) direction A of the drive gear 3 at the time of fishing line winding operation (forward rotation of the rotor 8). ) 3a, a reverse-side tooth surface (second tooth surface) 3b located on the opposite side of the forward-rotation side tooth surface 3a (facing the rotation (reverse rotation) direction of the drive gear 3 at the time of fishing line feeding operation), and a tooth It has a front surface 3c and a tooth bottom surface 3d.

  In this case, due to the special tooth surface shape of the gears 3 and 13 in which the tooth traces are curved and twisted, the normal rotation side tooth surface 3a of the drive gear 3 causes the forward rotation of the rotor 8 accompanying the fishing line winding operation. At the time (when the drive gear 3 rotates in the forward rotation direction A), it starts to mesh with the forward rotation side tooth surface 13a of the pinion gear 13 from the radially outer portion (outer end portion), and then the drive gear 3 Along with the normal rotation, the radially inner portion gradually bites into the normal rotation side tooth surface 13 a of the pinion gear 13. On the other hand, the reverse side tooth surface 3b of the drive gear 3 is the reverse side of the pinion gear 13 from the radially inner portion when the rotor 8 is reversely rotated (when the drive gear 3 rotates in the reverse direction) accompanying the fishing line feeding operation. Engagement with the tooth surface 13 b starts, and then, as the drive gear 3 reverses, the radially outer portion gradually engages with the reverse rotation side tooth surface 13 b of the pinion gear 13.

  Here, at the time of forward rotation of the rotor 8 accompanying the fishing line winding operation (when the drive gear 3 rotates in the forward rotation direction A), the radially outer portion of the forward rotation side tooth surface 3a of the drive gear 3 is the pinion. When starting to mesh with the forward rotation side tooth surface 13a of the gear 13, the radially outer end edge (the portion indicated by P1 in FIGS. 3 and 5) of the reverse rotation side tooth surface 3b of the drive gear 3 is the reverse rotation side of the pinion gear 13. In this state, the reverse tooth surface 3b of the drive gear 3 continues to be in direct contact with the reverse tooth surface 13b of the pinion gear 13 in this state. Then, the transition to the meshing state between the radially inner portion of the forward rotation side tooth surface 3a of the drive gear 3 and the forward rotation side tooth surface 13a of the pinion gear 13 is not smoothly performed, and the gears 3 and 13 are meshed. It ’s just a bad condition , There is a risk that the teeth 3A, 13A will with time rapidly worn.

  Therefore, in the present embodiment, a direct sliding contact with the reverse rotation side tooth surface 13b of the pinion gear 13 is avoided at the radially outer end portion (outer peripheral end portion) of the reverse rotation side tooth surface 3b of the drive gear 3. An escape portion 22 is formed. As a result, the radially outer end edge P1 of the reverse rotation side tooth surface 3b of the drive gear 3 that has come into contact with the reverse rotation side tooth surface 13b of the pinion gear 13 at the beginning of meshing during fishing line winding operation is rotated in the subsequent normal rotation direction A. Accordingly, the pinion gear 13 is separated from the reverse-side tooth surface 13b (indicated by P2 in FIG. 3). Therefore, thereafter, there is no inconvenience that the reverse side tooth surface 3b of the drive gear 3 continues to be in direct sliding contact with the reverse side tooth surface 13b of the pinion gear 13 as the drive gear 3 rotates forward.

  In the present embodiment, the relief portion 22 of each tooth 3A of the drive gear 3 tapers from the radially outer end portion of the drive gear 3 toward the radially inner end portion, as clearly shown in FIGS. 4 and 5. Further, it is formed as a triangular cutout that tapers from the tooth tip surface 3c toward the tooth bottom surface 3d. In this case, the ratio D / E of the tooth width direction dimension D of the relief portion 22 to the tooth width E of the tooth 3A (see FIG. 4) is 0.05 (5%) or more and 0.5 (50%) or less. Is preferred. The closer the ratio D / E is to 0.05, the easier the processing is, but a sufficient function (smooth rotation) cannot be obtained due to processing variations, so the ratio D / E is 0.4 (40%). ) Is particularly preferred. On the other hand, if the ratio D / E exceeds 0.5 (50%), the clearance between the pinion 13 and the drive gear 3 becomes large, and there is a possibility that smooth rotation cannot be obtained due to rattling. Further, the ratio F / G (see FIG. 5) of the tooth height direction dimension F of the relief portion 22 to the tooth height G of the tooth 3A is also 0.1 (10%) or more and 1 (100%) or less for the same reason. It is preferable that it is about 0.5 (50%).

  Various forms of the surface shape of the relief portion 22 are conceivable. FIG. 6 shows an example of the surface shape of the relief portion 22. 6A shows a circular arc surface (spherical surface) in which the relief portion 22 has a convex surface, and FIG. 6B shows an arc surface (spherical surface) in which the surface shape of the relief portion 22 has a concave shape. In FIG. 6C, the surface shape of the relief portion 22 is flat (straight).

  As described above, in this embodiment, the escape portion for avoiding the direct sliding contact with the reverse rotation side tooth surface 13b of the pinion gear 13 at the outer peripheral side end portion of the reverse rotation side tooth surface 3b of the drive gear 3. 22 is formed. Therefore, even when meshing error or deformation occurs at the time of high load winding, the drive gear 3 with respect to the pinion gear 13 is meshed from the radially outer corner on the reverse side tooth surface side toward the radially inner side. Is allowed by the relief portion 22 and smoothly shifts (therefore, from the start of meshing between the radially outer portion of the normal rotation side tooth surface 3a of the drive gear 3 and the normal rotation side tooth surface 13a of the pinion gear 13, (The transition to the meshing state between the radially inner portion of the normal rotation side tooth surface 3a of the gear 3 and the normal rotation side tooth surface 13a of the pinion gear 13 is smoothly performed), and the reduction in tooth strength is prevented (tooth 3A). , 13A can be effectively prevented from being accelerated over time), and the meshing state can be effectively improved, and smooth winding rotation performance can be obtained and a driving mechanism having durability can be realized.

  When the rotor 8 rotates in reverse (when the fishing line is fed out), the reverse rotation tooth surface 3b of the drive gear 3 starts to engage with the reverse rotation tooth surface 13b of the pinion gear 13 from its radially inner portion, so that the relief portion 22 engages. Does not adversely affect the condition and rotation performance.

  Further, in this embodiment, the reverse side tooth surface 3b is not cut more than necessary by crowning, but only the radially outer end portion (near the tooth tip) at the beginning of meshing necessary for improving the meshing state is cut. As a result, the strength of the teeth 3A is not greatly reduced, and the durability at the time of high load winding is excellent.

  Needless to say, the present invention is not limited to the above-described embodiments, and can be variously modified without departing from the scope of the invention. For example, in the embodiment described above, the relief portion 22 formed on the reverse rotation side tooth surface 3b of the drive gear 3 has a triangular shape, but the shape of the relief portion 22 can be arbitrarily set. As long as the strength of the teeth is not impaired, the relief portion 22 can be formed not only on the outer peripheral side end portion of the reverse rotation side tooth surface 3b but also on other parts of the tooth 3A (for example, the normal rotation side tooth surface 3a). .

It is a side view which has a partial cross section of the spinning reel for fishing which concerns on one Embodiment of this invention. It is an expanded sectional view which follows the AA line of FIG. It is a principal part expanded sectional view in alignment with the BB line of FIG. FIG. 3 is an X direction arrow view (enlarged view) of FIG. 2. It is a principal part expansion perspective view of a drive gear. It is sectional drawing which follows the CC line of FIG.

Explanation of symbols

1 Spinning reel for fishing 2 Handle shaft 3 Drive gear (face gear)
3A tooth 3a normal rotation side tooth surface (first tooth surface)
3b Reverse rotation side tooth surface (second tooth surface)
8 Rotor 13 Pinion gear 13A Teeth 13a Forward rotation tooth surface 13b Reverse rotation tooth surface 15 Fishing line guide portion 22 Relief portion 27 Rotor shaft

Claims (2)

In a fishing reel in which a drive mechanism coupled to a handle shaft for rotationally driving a rotor having a fishing line guide is provided on the reel body,
The drive mechanism has a face gear that is provided on the handle shaft and meshes with a pinion gear that rotates integrally with the rotor;
Each tooth of the face gear has a first tooth surface facing the rotation direction of the face gear during the fishing line winding operation and a second tooth surface located on the opposite side of the first tooth surface. An escape portion for avoiding direct sliding contact with the tooth surface of the pinion gear is formed at the outer peripheral side end portion of the second tooth surface. .   2. The fishing spinning reel according to claim 1, wherein the handle shaft is disposed in a state of being offset and orthogonal to a rotor shaft to which the pinion gear is mounted.

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