JP2002119183A - Anti-reverse apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably maintain anti-reverse performances by the wedge action of a one-way clutch even in the case of different reverse rotation speeds of a driving shaft. SOLUTION: A retainer 2 is installed inside an outer ring 1, a tubular part 2a of the retainer 2 is provided with plural storage holes 2c in the circumferential direction and rodlike rolling members 10 having wedge actions and spring members 11 are stored in the plural storage holes 2c and a driving shaft B is fitted to the internal circumference of the retainer 2. The internal circumferential face 1a of the outer ring 1 is provided with free rotation areas α of the rodlike rolling members 10 and blocking faces β which the rodlike rolling members 10 are brought into contact with and block the rotations in recessed parts. The blocking faces β are alternately provided with internal circumferential faces 1a having large wedge angles γ and internal circumferential faces 1b having small wedge angles δ, the wedge angles γ at one side have, for example, 8 deg. to 10 deg., are useful for static torque and have a large acceptable torque and the wedge angles δat the other side have, for example, 6 deg.C to 8 deg.C, are useful for dynamic torque and have a small acceptable torque. The outer ring 1 is a stationary part and the driving shaft B is a rotating part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a reverse rotation preventing device which permits rotation of a rotating portion in one direction and prevents rotation in another direction.

[0002]

2. Description of the Related Art For example, a fishing reel having a reverse rotation preventing device is provided.
In order to improve the hooking operability and fishing line release property by reducing the play at the time of stopping the reverse rotation, the ratchet system adopted a one-way clutch that uses the wedge action of the roller with a small degree of reverse rotation as the reverse rotation prevention device. Thing is real opening 64-64
No. 64, Japanese Utility Model Application Laid-Open No. 64-38963 and Japanese Patent No.
At present, it is widely used as known in Japanese Patent Application Publication No. 996339.

At the time of actual fishing, the speed applied during the reverse rotation of the drive shaft via the fishing line depends on the response to the fighting with the fish (intermittent winding operation, fish pulling and tilting operation, etc.). The actual situation is that the loads are different. However, the one-way clutch used in the conventional anti-reverse device for fishing reels has a relatively low-speed specification and a large allowable torque (the wedge angle of the roller is such that the locking performance is not hindered). Is set relatively large.)
At the time of actual fishing, when the reverse rotation speed of the drive shaft is relatively slow due to the fight with the target fish and fish, the wedge action is performed without any problem. The reverse rotation stop function is executed. However, depending on the fishing conditions, the drive shaft may rotate at a high speed in the reverse direction due to sudden pulling or momentum of the fish, and in this case, the roller tends to slide against the wedge action surface,
Then, there remains such a problem that the bite-in property is reduced, a reliable wedge action is not obtained, the locking is not performed, and a phenomenon that the drive shaft idles without being stopped against reverse rotation is caused.

[0004]

The problem to be solved is that, in an actual situation where the reversing speed of the drive shaft is different, the wedge action of the roller of the one-way clutch functions to reliably prevent the reverse rotation of the drive shaft. That is not possible.

An object of the present invention is to provide a reverse rotation preventing device capable of stably maintaining the reverse rotation stopping performance due to the wedge action of a one-way clutch even when the reverse rotation speed of a drive shaft is different in view of the above-mentioned drawbacks.

[0006]

According to the present invention, in order to achieve the above object, an invention according to claim 1 is provided between a fixed portion and a rotating portion to rotate the rotating portion in one direction. In a reverse rotation prevention device comprising a one-way clutch having a retainer accommodating and holding a plurality of rolling members for allowing and preventing rotation in the other direction, the rolling members are disposed in wedge regions having a plurality of different wedge angles. The gist is that.

According to a second aspect of the present invention, there is provided a holding device for holding and holding a plurality of rolling members provided between a fixed portion and a rotating portion for allowing rotation of the rotating portion in one direction and preventing rotation in the other direction. In a reverse rotation prevention device comprising a one-way clutch having a device, clutches housed and held in the retainer and having different wedge angles at which a rolling member wedges are disposed between the fixed portion and the rotating portion. It is assumed that.
The invention according to claim 3 is a reverse rotation in which a switching operation member is engaged with the reverse rotation preventing device to rotate the switching operation member, thereby allowing rotation of the rotating portion in one direction and preventing rotation in the other direction. The gist is that the mode can be switched between a prevention mode and a free rotation mode that allows rotation in both directions. The invention according to claim 4 is characterized in that the reverse rotation preventing device is provided between a rotating portion that rotates in conjunction with a handle of a fishing reel and a fixed portion of the reel body. It is.

[0008]

According to the first aspect of the present invention, even if the reverse rotation speed of the drive shafts B and B 'changes from low-speed rotation to high-speed rotation due to an actual situation change, the high-speed operation at low-speed reverse rotation is not achieved. The rolling member 10 in the region of the inferior wedge angles γ and γ ′ having a large allowable torque acts preferentially, and at the time of high-speed reverse rotation, the allowable torque decreases, but the small wedge angles δ and δ have a high instantaneous wedge action locking function. In this case, the rolling members 10 in the region of ′ preferentially act on each other, and the reverse rotation stopping function can be obtained sufficiently stably in response to the change in the reverse rotation speed of the drive shafts B and B ′.

According to the second aspect of the present invention, by disposing the clutch bodies having different wedge angles between the fixed portion and the rotating portion, it is possible to sufficiently cope with different changes in the reverse rotation speed between the low speed and the high speed. The anti-reverse function described above can be obtained, and since it can be arranged on different drive shafts, the degree of freedom in design increases. In addition, parts can be replaced according to the wear and damage of each clutch, so that maintenance is improved. According to the third aspect of the present invention, the anti-reverse device A 'can be switched between an operation state in which wedge action is performed (reverse rotation prevention mode) and a non-operation state in which no wedge action is performed (free rotation mode). It becomes possible. According to the fourth aspect of the present invention, when the anti-reverse device A 'comprising a rolling type one-way clutch is incorporated into a fishing spinning reel, a fishing reel having a remarkable change in the reverse rotation speed of the drive shaft B is provided. In addition, a stable reversing prevention function is obtained, and a reliable fight with fish becomes possible.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiment. FIGS. 1 and 2 show a first embodiment of a reverse rotation preventing device comprising a rolling type one-way clutch, and FIG. 1 is a sectional front view of the reverse rotation preventing device. FIG. 2 is an enlarged sectional front view of a main part.

A reverse rotation preventing device A comprising a rolling type one-way clutch has a retainer 2 mounted inside an outer race 1 and a rod-shaped rolling member 10 acting as a wedge in a plurality of accommodation holes of the retainer 2 is accommodated therein. The drive shaft B is fitted on the inner periphery of the container 2. On the inner peripheral surface of the outer race 1, a free rotation area α of the bar-shaped rolling member 10 and a blocking surface β where the bar-shaped rolling member 10 abuts and is prevented from rotating by a concave portion. In the blocking surface β, inner peripheral surfaces 1a having a large wedge angle and inner peripheral surfaces 1b having a small wedge angle are alternately formed. The wedge angle is set at a right angle to a line a connecting the center of the outer ring 1 and the center of the rod-shaped rolling member 10.
Of the inner peripheral surfaces 1a and 1b with respect to the center line b, and one wedge angle γ and the other wedge angle δ. One wedge angle γ
Is 8 ° to 10 ° for static torque and has a large allowable torque. The other wedge angle δ is, for example, 6 ° to 8 ° for dynamic torque and has a small allowable torque.

The retainer 2 is formed by a cylindrical portion 2a and a disk 2b, and a plurality of receiving holes 2c are formed in the circumferential direction of the cylindrical portion 2a. A rod-shaped rolling member 10 and a spring member 11 are inserted into the plurality of accommodation holes 2c, respectively. When the rolling member 10 is inserted into the plurality of accommodation holes 2c, the rolling member 10
Is mounted on the outer periphery of the drive shaft B, is inserted into the concave portion of the outer race 1, and is urged by the spring member 11 in the blocking surface β direction. In FIG. 1, the outer ring 1 serves as a fixed part, and the drive shaft B serves as a rotating part.

The operation of the reverse rotation preventing device A comprising a rolling type one-way clutch is shown in FIG. 1. When the drive shaft B is rotated clockwise in the forward direction, the retainer 2 is also driven to rotate by friction and the rolling member 1 is rotated.
0 is in the free rotation range α and is in a non-operating state in which no wedge action is performed, so that the drive shaft B can rotate clockwise in the forward direction. Next, when the drive shaft B is reversely rotated in the counterclockwise direction, the retainer 2 is also driven to rotate by friction, and the rolling member 10 is positioned on the blocking surface β to be in an operation state in which the driving member B acts as a wedge. Clockwise rotation is prevented and reverse rotation is not possible. At this time, when a static torque turned in the reverse direction from the state where the drive shaft B is stopped acts, a large wedge angle γ acts, and the static lock property is large. The small wedge angle δ when the drive shaft B is instantaneously reversed or when the dynamic torque with the stopper ON during the reverse rotation is applied.
Works, and the dynamic locking property is great.

A large wedge angle γ is strong against static torque but weak against dynamic torque, and a small wedge angle δ is strong against dynamic torque but weak against static torque. By combining a large wedge angle γ and a small wedge angle δ, the two are alternately combined. Static lock and dynamic lock can be exhibited.

When the reverse rotation preventing device is configured as described above, even if the reverse rotation speed of the drive shaft B changes from low-speed rotation to high-speed rotation due to an actual situation change, the high-speed performance is inferior at low-speed reverse rotation. The rolling member 10 in the region of the wedge angle γ where the permissible torque is large acts preferentially, and the rolling member 10 in the region of the small wedge angle δ where the permissible torque decreases during the high-speed reverse rotation but the instantaneous wedge action locking function is high is reduced. Each of them acts preferentially, and the reverse rotation preventing function can be obtained sufficiently stably in response to the change in the reverse rotation speed of the drive shaft B.

FIGS. 3 and 4 show a second embodiment of a reverse rotation preventive device comprising a rolling type one-way clutch. FIG. 3 is an exploded perspective view of an outer ring, a retainer and a drive shaft, and FIG. 4 is a side view of the outer ring and a retainer. FIG.

In a reverse rotation prevention device A 'comprising a rolling type one-way clutch, a retainer 2 is mounted inside an outer race 1 and a plurality of circumferential holes of the retainer 2 are formed in a double row in the axial direction. The wedge-shaped rod-shaped rolling member 10 is housed therein, and the drive shaft B is fitted on the inner periphery of the retainer 2. On the inner peripheral surface of the outer race 1, a free rotation area α of the bar-shaped rolling member 10 and a blocking surface β where the bar-shaped rolling member 10 abuts and is prevented from rotating by a concave portion. The blocking surface β is an inner peripheral surface 1a having a large wedge angle.
And the inner peripheral surface 1b having a small wedge angle are alternately formed.

The retainer 2 is formed by a cylindrical portion 2a and a disk 2b. A plurality of receiving holes 2c are formed in the circumferential direction of the cylindrical portion 2a. 'Is formed. A rod-shaped rolling member 10 and a spring member are inserted into the plurality of accommodation holes 2c and 2c ', respectively. When the rolling member 10 is inserted into the plurality of accommodation holes 2c, 2c ', the rolling member 10 is mounted on the outer periphery of the drive shaft B and is inserted into the concave portion of the outer ring 1, and is moved in the blocking surface β direction by the spring member. Being energized. Other configurations are substantially the same as those of the first embodiment.

The operation of the reverse rotation prevention device A 'comprising a rolling type one-way clutch is substantially the same as that of the first embodiment.
Since a plurality of accommodation holes 2c in the circumferential direction are formed in the cylindrical portion 2a, and a plurality of accommodation holes 2c 'in a double row are formed in the axial direction, and the rolling members 10 are respectively inserted therein. The rolling member 10 operates in a double row between the outer peripheral surface of the drive shaft B and the inner peripheral surface of the outer ring 1 in a wedge action.

When the anti-reverse device is constructed as described above, a plurality of receiving holes 2c, 2c 'and a rolling member 10 are inserted into one outer ring 1 of the fixing portion in a double row in the axial direction. Since the retainer 2 is incorporated, the effects of the first embodiment are exhibited in a double row.

FIGS. 5 to 8 show a development in which the anti-reverse device comprising a rolling type one-way clutch according to the second embodiment is incorporated in a fishing spinning reel. FIG. 5 is a fishing spinning reel. 6 is an enlarged sectional side view of a main part of FIG.
FIG. 7 is a sectional front view of the reverse rotation preventing device, and FIG. 8 is a partial sectional side view of the reverse rotation preventing device.

The spinning reel for fishing includes a reel body 3
The anti-reverse device A 'including the bearing 12 and the rolling type one-way clutch of the second embodiment is inserted into the concave portion 3b of the front support portion 3a, and the anti-reverse device A' The outer ring 1 is prevented from rotating in the recess 3b. The cylindrical interlocking shaft 4 that rotates interlockingly with the rotation of the handle 14 is rotatably supported by the bearing 12 and the anti-reverse device A ′, and the drive shaft B is fitted around the interlocking shaft 4 and the outer periphery of the interlocking shaft 4 so as not to rotate. And an inner ring 5 composed of In the developed example, the support portion 3a serves as a fixed portion of the reel body 3, and the drive shaft B serves as a rotating portion.

A tooth portion 4a and a contact portion 4b are integrally formed at the base end of the interlocking shaft 4, and a bearing 12 is brought into contact with the contact portion 4b. The center ring 6a of the inner ring 5 and the rotor 6 is fitted to the front side of the bearing 12, and the inner ring 5 and the center cylinder 6a are attached to the front end of the interlocking shaft 4 with a nut 15 screwed. Tooth portion 4 integrally formed on the front side of the base end of interlocking shaft 4
a is meshed with the drive gear 16 and the rotor 6 is
It is supported so as to be rotated in conjunction with the rotation of. A spool shaft 18 having a spool 17 attached to the end thereof is slidably inserted into the center hole of the interlocking shaft 4 so as to be able to reciprocate back and forth. The drive gear 16 is supported by a bearing (not shown) attached to the reel body 3 and a lid (not shown), and is rotated by the handle 14.

The rotor 6 has a pair of bail support arms 6b and 6c.
One of the bail support members 19 and the other of
The support member 20 is supported by support pins 21 and 22 at a fishing line winding position and a fishing line discharge position (not shown) so as to be freely reversible.
A roller mounting part 23 of a fishing line guide part is mounted on one of the bail support members 19, and a line roller 24 is rotatably held. A bail 25 is mounted between the other bail support member 20 and the roller mounting portion 23.

In a reverse rotation prevention device A 'comprising a rolling type one-way clutch, a retainer 2 is fitted on the outer periphery of an inner ring 5 comprising a collar which is non-rotatably fitted on the outer periphery of an interlocking shaft 4 of a drive shaft B. As in the first and second embodiments, the plurality of receiving holes 2c and 2c 'of the retainer 2 accommodate the rolling member 10 acting as a wedge, and the rolling member 10 is mounted on the outer periphery of the inner ring 5. On the inner peripheral surface of the outer race 1, a free rotation area α of the bar-shaped rolling member 10 and a blocking surface β where the bar-shaped rolling member 10 abuts and is prevented from rotating by a concave portion. 2, the blocking surface β is formed by alternately forming inner peripheral surfaces 1a having a large wedge angle and inner peripheral surfaces 1b having a small wedge angle. The outer periphery of the retainer 2 is fitted to the inner peripheral surface of the outer ring 1.

An operation lever 2d is integrally provided on a side surface of the retainer 2 of the reverse rotation prevention device A 'comprising a rolling type one-way clutch. A long hole 2e is formed at the free end of the operation lever 2d. The operation lever 2d is inserted into the notch 3c of the support portion 3a, protrudes outside the support portion 3a, and is retained by the retaining plate 13. An operating rod 26 is rotatably mounted on the reel body 3, and a switching operation plate 27 is mounted on the front side of the operating rod 26, and an operating portion 28 composed of a pin fixed to the switching operation plate 27 has an elongated hole 2e. Has been inserted. A dead point spring 3 is provided between a pin 29 fixed to the switching operation plate 27 and a pin 30 fixed to the reel body 3.
1 is stretched.

An operation knob 32 is attached to an operation rod 26 projecting to the rear outside of the reel body 3. Operating rod 2
The switching operation member C includes the switching operation plate 6, the switching operation plate 27, the operating portion 28, the pin 29, and the dead point spring 31.

The operation of the reverse rotation prevention device A 'comprising a rolling type one-way clutch is such that the operation knob 32, the operation rod 26 and the switching operation plate 27 are rotated to rotate the operation lever 2d to the position shown by the solid line in FIG. When it is moved, the operation lever 2d of the retainer 2 is rotated clockwise, and the rolling member 10 is located in the free rotation range α and enters a non-operating state in which no wedge acts, that is, a free rotation mode. The forward rotation and the reverse rotation of the motor 6 and the interlocking shaft 4 become possible. Next, when the operation knob 32, the operation lever 26, and the switching operation plate 27 are rotated and the operation lever 2d is rotated to the position indicated by the two-dot chain line in FIG. Since the rolling member 10 is rotated clockwise and is positioned on the blocking surface β where the rolling member 10 abuts and is prevented from rotating, a wedge-acting operation state, that is, a reverse rotation preventing mode is established. In the forward rotation, the rolling member 10 can move in the clockwise direction against the spring member 11 so that the forward rotation is possible. However, the reverse rotation causes the rolling member 10 to contact the blocking surface β and rotate in the reverse direction by the wedge action. Becomes impossible.

The operation of the fishing spinning reel includes an operation knob 32, an operation rod 26, a switching operation plate 27, and a holder 2.
When the operation lever 2d is rotated to the position shown by the solid line in FIG. 7, the rolling member 10 is in a non-operating state (free rotation mode) in which the rolling member 10 does not wedge in the free rotation range α. When the handle 14 is rotated in the direction in which is wound around the spool 17, the drive gear 16 is rotated, and the interlocking shaft 4 and the rotor 6 are rotated forward through the teeth 4a. Fishing line 33 is spool 1
7, the fishing line 33 is guided by a line roller 24 of a fishing line guide provided on one of the bail support members 19, and is wound in parallel with a spool 17 which is reciprocated back and forth. Turned.

When the reverse rotation of the rotor 6 is prevented, the operation knob 32, the operation rod 26, the switching operation plate 27 and the holder 2 are operated to rotate, and the operation lever 2d is set to a two-dot chain line in FIG. Is switched to the operation state (reverse rotation prevention mode) in which the rolling member 10 is in contact with the rolling member 10 and is positioned on the blocking surface β where rotation is prevented. Fishing line 33 by pulling the prey
Is pulled out and the rotor 6 is rotated counterclockwise, the interlocking shaft 4 and the rotor 6 are rotated reversely. However, since the rolling member 10 is located on the blocking surface β where the rotation is prevented by the contact, the reverse rotation is prevented by the wedge action. Further, at this time, a plurality of accommodating holes 2c in the circumferential direction are formed in the cylindrical portion 2a of the retainer 2, and a plurality of accommodating holes 2c 'are formed in the axial direction in a double row. Is inserted, so that the rolling member 10 operates in a double row wedge action between the outer peripheral surface of the drive shaft B and the inner peripheral surface of the outer ring 1, and the playability at the time of reverse rotation is small. The reverse rotation of the rotor 6 is stopped very quickly.

As described above, the operation lever provided on the retainer 2 rotatably supports the retainer 2 for holding the rolling member 10 of the reverse rotation preventing device A 'comprising a rolling type one-way clutch.
Switching operation plate 2 supported on reel body 3 in long hole 2e of 2d
7 can be switched between an operation state in which the reverse rotation prevention device A 'operates as a wedge (reverse rotation prevention mode) and a non-operation state in which no wedge operation is performed (free rotation mode). It becomes practical. When the anti-reverse device A 'composed of a rolling type one-way clutch is incorporated in a fishing spinning reel, a stable anti-reverse function is provided even in a fishing reel in which the reverse rotation speed of the drive shaft B changes remarkably. Obtained, and a reliable fight with fish becomes possible. Even if the reverse rotation preventing device A including the rolling one-way clutch of the first embodiment is incorporated in the spinning reel for fishing, substantially the same effect can be obtained.

In the above description, the reel incorporating the anti-reverse device A 'composed of a rolling one-way clutch has been described as a fishing spinning reel, but it may be applied to other types of reels. .

FIG. 9 shows a third embodiment of a reverse rotation preventing device comprising a rolling type one-way clutch. FIG. 9 is an exploded perspective view of an outer ring, a retainer and a drive shaft.

In the reverse rotation preventing device A "comprising a rolling type one-way clutch according to the third embodiment, a plurality of circumferentially arranged receiving holes 2c formed in the cylindrical portion 2a of the retainer 2 are axially arranged in a double row. A plurality of receiving holes 2c 'are formed with different phases for each row, and the free rotation area α of the rod-shaped rolling member 10 formed of a concave portion formed on the inner peripheral surface of the outer ring 1' and the rod-shaped rolling member. The blocking surface β, which is in contact with and prevents rotation, is formed by changing the phase of each row, and the blocking surface β is formed with the inner peripheral surfaces 1a and 1c having a large wedge angle and the inner surface having a small wedge angle as in FIG. Outer surface 1
b and 1d are formed alternately. The other configuration is the first
This is almost the same as the embodiment.

When the anti-reverse device is constructed as in the third embodiment, a plurality of receiving holes 2c, 2c 'are formed in one outer ring 1' in double rows in the axial direction while changing the phase. Since the retainer 2 into which the rolling member 10 is inserted is incorporated, the one-way clutch wedge function of the one-way clutch double row rolling member 10 more reliably exerts the one-way clutch function even in a severe use environment or actual condition. As a result, the anti-reverse performance can be stably and reliably maintained, and good incorporation and decomposability can be obtained. The retainer 2 in which the plurality of receiving holes 2c and 2c 'and the rolling member 10 are inserted in a double row in the axial direction is incorporated in one outer ring 1' of the fixing portion, so that the first embodiment is used. Will be exhibited in multiple rows.

FIGS. 10 and 11 show a fourth embodiment of a reverse rotation preventing device comprising a rolling type one-way clutch. FIG. 10 is a sectional front view of the reverse rotation preventing device, and FIG. 11 is an enlarged sectional front view of a main part.

The anti-reverse device D comprising a rolling one-way clutch has a retainer 2 'mounted inside an outer ring 1 "which rotates in conjunction with a handle, and a plurality of retainers 2' are provided in the circumferential direction of the cylindrical portion 2a of the retainer 2 '. A receiving hole 2c is formed, a plurality of rod-like rolling members 10 and spring members 11 acting as wedges are received in the plurality of receiving holes 2c, and a retainer 2 'is fixed to a stationary member E to which a reverse rotation preventing device D is mounted. When the rolling member 10 is inserted into the plurality of accommodation holes 2c, the rolling member 10 is mounted on the outer periphery of the fixed support portion E.
The inner peripheral surface of the outer ring 1 "is formed in a perfect circle. In FIG. 10, the outer ring 1" is a rotating part. Inner ring 5 'of fixed support E
Is formed in a polygonal shape, and a blocking surface β and a free rotation region α are formed in which the rod-shaped rolling member 10 abuts to prevent rotation. In the blocking surface β, inner peripheral surfaces 5a having a large wedge angle and inner peripheral surfaces 5b having a small wedge angle are alternately formed.

The wedge angle is indicated by the angle of the inner peripheral surfaces 5a and 5b with respect to the center line b of the rod-shaped rolling member 10 perpendicular to the line a connecting the center of the outer ring 1 "and the center of the rod-shaped rolling member 10, and one wedge angle γ And the other wedge angle δ ', one wedge angle γ' is, for example, 8 ° to 10 ° for static torque and a large allowable torque, and the other wedge angle δ 'is, for example, 6 ° to 8 °. The blocking surface β is formed on the other outer peripheral side on the left side in the figure, and the free rotation range α is formed on the other outer peripheral side on the right side in the figure. The peripheral surface is formed in a polygon corresponding to the outer peripheral surface of the inner ring 5 '.

When the reverse rotation preventing device D composed of a rolling type one-way clutch is configured as described above, even if the reverse rotation speed of the outer wheel 1 ″ changes from low speed rotation to high speed rotation due to an actual situation change, low speed reverse rotation is performed. At the time of rotation, the rolling member 10 in the region of the wedge angle γ ', which is inferior in high speed but has a large permissible torque, acts preferentially. Angle δ '
The rolling members 10 in the region (2) preferentially act on each other, and the reverse rotation stopping function can be obtained sufficiently stably in response to the change in the reverse rotation speed of the outer ring 1 ".

In the above description, the large wedge angle and the small wedge angle are alternately arranged in the circumferential direction. However, the circumferential direction is the same wedge angle, and the large wedge angle and the small wedge angle are arranged in a double row in the axial direction. The angles may be arranged alternately.

[0041]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect, even if the reverse rotation speed of the drive shaft changes from low-speed rotation to high-speed rotation due to an actual situation change, the wedge angle at the low-speed reverse rotation is inferior to high-speed but large in allowable torque. The rolling members in the region act preferentially, and the allowable torque decreases at the time of high-speed reverse rotation, but the rolling members in the region with a small wedge angle having high instantaneous wedge action locking function respectively act preferentially, and the drive is performed. The reverse rotation stopping function can be obtained sufficiently stably in response to a change in the reverse rotation speed of the shaft.

According to the second aspect of the present invention, by disposing the clutch bodies having different wedge angles between the fixed portion and the rotating portion, a stable reverse stop that can sufficiently cope with different changes in the reverse rotation speed between low speed and high speed rotation. The function can be obtained, and since it can be arranged on different drive shafts, the degree of freedom of design is increased.
In addition, parts can be replaced according to the wear and damage of each clutch, so that maintenance is improved. Claim 3
As a result, the operating state in which the reverse rotation prevention device is wedge-operated (reverse rotation prevention mode) and the non-operational state in which no wedge operation is performed (free rotation mode)
Since it is possible to switch to a wide range, a wide range of practical use is possible. According to the fourth aspect of the present invention, when the anti-reverse device comprising a rolling type one-way clutch is incorporated in a fishing spinning reel, a stable reverse rotation can be achieved even in a fishing reel in which the reverse rotation speed of the drive shaft B changes remarkably. The stopping function is obtained, and a reliable fight with the fish becomes possible.

[Brief description of the drawings]

FIG. 1 is a cross-sectional front view of a first embodiment of a reverse rotation prevention device including a rolling type one-way clutch.

FIG. 2 is an enlarged sectional front view of the main part.

FIG. 3 is an exploded perspective view of an outer ring, a retainer, and a drive shaft in a second embodiment of a reverse rotation preventing device including a rolling type one-way clutch.

FIG. 4 is a side view of the outer race and the retainer.

FIG. 5 is a cross-sectional side view of a main part of a fishing spinning reel in a deployed example in which the anti-reverse device comprising a rolling type one-way clutch of the second embodiment is incorporated in a fishing spinning reel. .

FIG. 6 is an enlarged sectional side view of the main part.

FIG. 7 is a sectional front view of the reverse rotation prevention device.

FIG. 8 is a partial cross-sectional side view of the reverse rotation prevention device.

FIG. 9 is an exploded perspective view of an outer ring, a retainer, and a drive shaft in a third embodiment of a reverse rotation preventing device including the same rolling type one-way clutch.

FIG. 10 is a cross-sectional front view of a reverse rotation preventing device according to a fourth embodiment of the present invention, which includes a rolling type one-way clutch.

FIG. 11 is an enlarged sectional front view of the main part.

[Explanation of symbols]

1, 1 ', 1 "Outer ring 1, 1', 1", 3a, E Fixed part (outer ring, support part) 2, 2 'Cage 10 Rolling member 14 Handle A, A', A ", D Rolling type Reverse rotation prevention device consisting of directional clutch B, B 'Rotating part (drive shaft) C Switching operation member γ, γ', δ, δ 'Wedge angle

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kyo Kaneko 3-14-16 Maesawa, Higashi-Kurume-shi, Tokyo Daiwa Seiko Co., Ltd. F-term (reference) 2B108 BF00 BF14

Claims (4)

[Claims] A one-way clutch provided between a fixed portion and a rotating portion for holding a plurality of rolling members for allowing rotation of the rotating portion in one direction and preventing rotation in the other direction; Wherein the rolling member is disposed in a wedge region having a plurality of different wedge angles. 2. A one-way clutch which is provided between a fixed portion and a rotating portion and has a retainer housing and holding a plurality of rolling members for allowing rotation of the rotating portion in one direction and preventing rotation in the other direction. A clutch having a different wedge angle between the fixed portion and the rotating portion, the clutch being accommodated and held in the retainer and having a wedge function for a rolling member. 3. A reverse rotation preventing motor for engaging a switching operation member with the reverse rotation preventing device and rotating the switching operation member to allow rotation of the rotating portion in one direction and prevent rotation in the other direction. Mode and free rotation mode that allows rotation in both directions.
3. The method according to claim 1, wherein the switchable state is set to be switched between the first mode and the second mode.
The reverse rotation prevention device as described. 4. The reversing prevention device is provided between a rotating portion that rotates in conjunction with a handle of a fishing reel and a fixed portion of a reel body. 3. The reverse rotation prevention device according to any one of 3.