US20010002640A1 - Oneway clutch bearing - Google Patents
Oneway clutch bearing Download PDFInfo
- Publication number
- US20010002640A1 US20010002640A1 US09/729,017 US72901700A US2001002640A1 US 20010002640 A1 US20010002640 A1 US 20010002640A1 US 72901700 A US72901700 A US 72901700A US 2001002640 A1 US2001002640 A1 US 2001002640A1
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- United States
- Prior art keywords
- bearing
- wall
- housing
- oneway
- bearing holder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000000088 plastic resin Substances 0.000 claims abstract description 8
- 238000009987 spinning Methods 0.000 abstract description 8
- 238000005096 rolling process Methods 0.000 description 14
- 238000010276 construction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K89/00—Reels
- A01K89/01—Reels with pick-up, i.e. with the guiding member rotating and the spool not rotating during normal retrieval of the line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/064—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls
- F16D41/066—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical
- F16D41/067—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K89/00—Reels
- A01K89/01—Reels with pick-up, i.e. with the guiding member rotating and the spool not rotating during normal retrieval of the line
- A01K89/0117—Anti-reverse mechanisms
Definitions
- the present invention relates to an oneway clutch bearing, and more particularly to an oneway clutch bearing used for preventing a reverse rotation of a spinning reel during fishing.
- a conventional apparatus for preventing reverse rotation of a spinning reel is generally provided by a click gear installed inside a rotor of the spinning reel.
- Korean Utility Model Publication No. 94-7711 which was assigned to Taiwa Seiko Corporation, discloses an apparatus for preventing reverse rotation of a spinning reel comprising an axis integrally formed on a stopper click coupled with a reverse click gear inside a convexed portion of a rotor.
- a movable member of the stopper click is operated by an actuating arm, and the axis is journalled on the front of a main body of the reel by the movable member.
- a movable body is integrally installed at the axis of the main body of the reel.
- the movable body is operated by a cam portion of the actuating arm having a lever supported inside the main body of the reel.
- the stopper click is provided with a spring, so that the stopper click is meshed with the click gear 3 to prevent the reverse rotation.
- the conventional apparatus for preventing reverse rotation has a problem that the rotor slips upon preventing the reverse rotation. Therefore, it is a general practice to enlarge a gear tooth portion to ensure the engaged state of the stopper click and the click gear.
- the number of gear teeth reduces in inverse proportion to the size of the gear tooth section, and the reduction of the number of the gear teeth increases the angle of the guidance to reverse rotation. This disables a prompt prevention of the reverse rotation.
- Japanese Utility Model Laid-Open No. 64-38963 discloses an apparatus for preventing reverse rotation, in which an oneway clutch bearing is mounted around the internal circumference of a latch wheel, and a number of rollers of the oneway clutch bearing are fitted around the external circumference of a bushing of a rotating axis.
- the above apparatus has a drawback in that the rolling velocity of the roller contacting surface decreases due to the small diameter of the rotating bushing, into which the rollers are fitted. This creates a problem of not fully guaranteeing an instantaneous braking. Also, a load is partially put on the abutting surface of each component when preventing reverse rotation, thereby resulting in a possible deformation and a low durability of the roller.
- the conventional bearing has no on/off switching function, and operates in uni-direction, thereby posing a problem of additionally providing a separate apparatus around the periphery of the oneway clutch bearing.
- the apparatus disclosed in Japanese Patent Laid-Open No. 64-38963 has a construction in which a gear is fitted into an outer periphery of the oneway clutch bearing to prevent its rotation, while the gear teeth are detachably engaged with the gear.
- the conventional apparatus not only has a complicated construction but also requires a wide mounting space.
- the apparatus for preventing reverse rotation disclosed in Hirano comprises a circular holder 109 rotatably mounted on a bushing, a circular external frame 110 rotatably fixed on a reel casting, and rolling members 107 retained by the circular holder 109 and the circular external frame 110 .
- the circular holder 109 comprises a guide recess 108 for receiving the rolling members 107 therein.
- Each guide recess 108 has an open slot 108 ′ at its lower portion, and the rolling members 107 received by the guide recess 108 through the open slot 108 ′ is partially exposed to be contacted with the bushing.
- the rolling members 107 contact with the internal surface of the circular external frame 110 to function as a wedge.
- a spring 111 is provided inside the guide recess 108 for biasing the rolling members 107 to wedge the bushing 6 .
- the spiral function of the rolling members 107 is generated by the internal circumference. Specifically, if the rolling members 107 are positioned at the concave portion 122 by means of rectangular internal surfaces 121 , 123 of the circular external frame 110 , the bushing can freely rotate in clockwise and counterclockwise directions. However, if the rolling members 107 are positioned apart from the concave portion 122 , reverse rotation of the bushing is prevented due to a functional contact with the rolling members 107 .
- one of the rolling members 107 is received between the two internal surfaces 121 , 123 of the circular external frame 110 .
- the internal surface of the circular external frame 110 has an octagonal shape.
- the number of rolling members is limited to four. In that case, if any of the rolling members 107 is damaged or the function of the spring for easing the rolling members deteriorates, the bushing is offset to that direction, thereby being unable to prevent reverse rotation of the bushing.
- the apparatus for preventing reverse rotation as disclosed in the aforementioned patent has a complicated construction with numerous fittings, thereby increasing the manufacturing cost.
- the clutch bearing includes a bearing cover with a clearance adjusting groove formed on an inner surface, and a bearing holder with a roller bearing.
- the clutch bearing has some problems as below followings:
- the bearing holder is made of a metal, it is difficult to precisely machine bearing receiving grooves and bearing guide protrusions of the bearing holder.
- a spring supporting the roller bearing is separate from the bearing holder. Accordingly, because the bearings are inserted into the bearing holder through the bearing receiving grooves formed on an outer periphery of the bearing holder, the bearing holder has to be maintained in a horizontal state to receive the bearings. Also, while all of bearings are completely inserted into the bearing holder, the bearing holder can be inserted into the bearing cover. This assembling operation is very cumbersome, and a time needed to assembly it is extended.
- the spring since the spring is separately inserted into the bearing holder, the spring has to have a shape of K so that the spring can smoothly operate. Because the spring has a short length due to its shape, the bearing is stiff in an off-mode.
- an object of the present invention is to resolve the above problems, and to provide an oneway clutch bearing capable of being as assembled easily.
- Another object of the present invention is to provide an oneway clutch bearing capable of preventing a roller bearing from being contacted with a bushing in an on-mode.
- an oneway clutch bearing using a frictional force between roller bearings and a bushing comprising: a housing made of plastic resin, and including an outer wall, an inner wall, and a bottom portion engaging the outer wall and the inner wall, the bottom portion being provided at its center with a circular opening, and a plurality of bearing supporting bars being protruded at a constant interval from an edge of the circular opening; a bearing holder made of plastic resin, and rotatably disposed between the outer wall and inner wall of the housing; a bearing guide disposed above the bearing holder, inserted between the inner wall and the outer wall of the housing, and having a plurality of arcuate recesses to receive the rollers; and a cover mounted onto an opened end of the housing.
- a height of the bearing supporting bar is slightly higher than that of the outer and inner walls, so that the free end of the bearing supporting bar is inserted to the cover.
- a plurality of through openings are formed between the outer wall and the inner wall.
- the bearing holder includes a circular base, a tap protruded downward from the base, a plurality of retaining bars protruded upward from the base, and an inverse-U shaped resilient member.
- the circular base of the bearing holder is inserted into the hollow portion of the housing, with the tap being inserted into a slit of the housing.
- the oneway clutch bearing of the present invention provides an advantage in that since the spring guide can be made by a drawing process, the manufacturing time and cost are shorter than those of a conventional clutch bearing.
- the bearing holder, the bearing guide, and the roller bearing can be inserted in to the housing by turns, so that the assembly of the clutch bearing is easy.
- FIG. 1 is an exploded perspective view of the oneway clutch bearing according to a preferred embodiment of the present invention.
- FIG. 2 is a plan view illustrating an assembled state of the oneway clutch bearing of FIG. 1.
- FIG. 3 is a view illustrating an on-mode of the oneway clutch bearing according to the present invention.
- FIG. 4 is a view illustrating an off-mode of the present invention in an assembled state.
- FIG. 5 is a partially perspective view of a conventional oneway clutch bearing.
- FIG. 1 is an exploded perspective view of the of the oneway clutch bearing according to the present invention.
- the clutch bearing of the present invention comprises a housing 10 having one open side and the other closed side.
- the housing 10 is made of plastic resin, and includes a circular outer wall 101 , a hexagonal inner wall 101 , and a bottom portion 103 engaging the outer wall and the inner wall.
- the bottom portion 103 is provided at its center with a circular opening 108 .
- a number of bearing supporting bars 104 are protruded at a constant interval from an edge of the circular opening 108 , and a cavity is formed between the inner wall 102 and the bearing supporting bar 104 .
- a height of the bearing supporting bar 104 is slightly higher than that of the outer and inner walls 101 and 102 .
- a free end of the bearing supporting bar 104 is inserted and fixed to a groove of a cover 18 as described below.
- a slit 105 having a constant size and a number of through openings 106 are form ed between the outer wall 101 and the inner wall 102 .
- a bearing holder 12 made of plastic resin is rotatably disposed in a hollow portion of the housing 10 .
- the bearing holder 12 includes a circular base 121 , a tap 122 protruded downward from the base 121 , a plurality of retaining bars 123 protruded upward from the base 121 , and an inverse-U shaped resilient member 125 each positioned adjacent to the retaining bar 123 .
- the retaining bar 123 consists of a first inside bar and a second outside bar, the second bar having a width wider than that of the first bar and engaged to the first bar.
- the circular base 121 of the bearing holder 12 is inserted into the hollow portion of the housing 10 , with the tap 122 being inserted into the slit 105 of the housing 10 .
- the housing 10 has a step portion 103 a on a bottom portion thereof, and the base 121 of the bearing holder 12 is positioned on the lower bottom of the hollow portion.
- the tap 122 of the bearing holder 12 is protruded downward from the bottom of the housing, so that the bearing holder 12 is movable by operation of the tap. If the tap 122 moves in the left or right direction, the oneway clutch bearing is switched in an on/off-mode.
- the “on-mode” means that the oneway clutch bearing rotates in one direction.
- the “on-mode” means that the oneway clutch bearing can freely rotate clockwise and counterclockwise.
- a bearing guide 14 is forcedly fitted into the hollow portion of the housing 10 , with the bearing holder 12 being inserted into the hollow portion of the housing. It should be noted that the bearing guide 14 is positioned on the upper bottom of the hollow portion not to prevent the bearing holder 12 from rotating.
- the bearing guide 14 While the outer periphery of the bearing guide 14 has a hexagonal shape to coincide with the shape of the inner wall 102 , the bearing guide is provided on its inner periphery with a number arcuate recesses to receive the rollers 16 . These recesses are formed in such a way that each recess has a deep portion 142 and a swallow portion 143 , and the bearing holder is made by a drawing process.
- the bearing holder 12 , the bearing guide 14 , and the roller bearings 16 are mounted in the hollow portion of the housing 10 by turns, and then the cover 18 is inserted into the opened end of the housing.
- FIG. 3 shows the off-mode of the oneway clutch bearing.
- the roller bearing 16 is positioned on the deep portion 142 of the bearing guide 14 , and is positioned at the back of the bearing supporting bar 104 .
- the bushing (not shown) is contacted with the bearing supporting bar, but not contacted with the roller bearings. Accordingly, since the bushing is not restricted by the roller bearings, the bushing is freely rotatable in any directions.
- FIG. 4 shows the on-mode of the oneway clutch bearing. If the bearing holder 12 rotates counterclockwise as shown in the figure, the roller bearings 16 disposed between the bearing supporting bar 123 and the spring 125 rotate counterclockwise. At that time, the roller bearings are disposed on the swallow portion 143 of the recess. When the roller bearings 16 rotates clockwise with the roller beings being contacted with the bushing, the roller bearings tend to roll to the right along the shallow portion of the recess.
- the spring 125 is disposed at a right side of the roller bearing 16 .
- the roller bearing 16 is slightly movable toward the right side against the biasing force of the spring in the on-mode of the clutch bearing. Accordingly, when the bushing rotates, the roller bearing does not apply a resisting force to the bushing.
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Abstract
An oneway clutch bearing used for preventing a reverse rotation of a spinning reel during fishing is disclosed. The clutch bearing comprises a housing made of plastic resin, and including an outer wall, an inner wall, and a bottom portion engaging the outer wall and the inner wall, the bottom portion being provided at its center with a circular opening, and a plurality of bearing supporting bars being protruded at a constant interval from an edge of the circular opening; a bearing holder made of plastic resin, and rotatably disposed between the outer wall and inner wall of the housing; a bearing guide disposed above the bearing holder, inserted between the inner wall and the outer wall of the housing, and having a plurality of arcuate recesses to receive the rollers; and a cover mounted onto an opened end of the housing.
Description
- The present invention relates to an oneway clutch bearing, and more particularly to an oneway clutch bearing used for preventing a reverse rotation of a spinning reel during fishing.
- A conventional apparatus for preventing reverse rotation of a spinning reel is generally provided by a click gear installed inside a rotor of the spinning reel.
- For example, Korean Utility Model Publication No. 94-7711, which was assigned to Taiwa Seiko Corporation, discloses an apparatus for preventing reverse rotation of a spinning reel comprising an axis integrally formed on a stopper click coupled with a reverse click gear inside a convexed portion of a rotor. A movable member of the stopper click is operated by an actuating arm, and the axis is journalled on the front of a main body of the reel by the movable member.
- A movable body is integrally installed at the axis of the main body of the reel. The movable body is operated by a cam portion of the actuating arm having a lever supported inside the main body of the reel. The stopper click is provided with a spring, so that the stopper click is meshed with the click gear3 to prevent the reverse rotation.
- According to the construction of the conventional apparatus for preventing reverse rotation of the spinning wheel as described above, if the lever is moved toward the left side by the actuating arm and thus the stopper click is supported in a state of engaging the stopper click with the click gear for preventing reverse rotation, the rotor can be rotated in the clockwise direction but not in the counterclockwise direction due to the engaged state of the stopper click and the click gear. Meanwhile, if the lever is moved toward the right side by the actuating arm so that the stopper click is in a state of disengaging the stopper click from the click gear, the rotor can be freely rotated in either direction.
- However, the conventional apparatus for preventing reverse rotation has a problem that the rotor slips upon preventing the reverse rotation. Therefore, it is a general practice to enlarge a gear tooth portion to ensure the engaged state of the stopper click and the click gear. The number of gear teeth reduces in inverse proportion to the size of the gear tooth section, and the reduction of the number of the gear teeth increases the angle of the guidance to reverse rotation. This disables a prompt prevention of the reverse rotation.
- Moreover, when a stopper click is positioned on a ridge of the gear, if the lever is moved toward the right side for the purpose of preventing the reverse rotation, the rotor slips off the same length as the gear tooth portion until the end portion of the click reaches a valley of the gear tooth portion. Accordingly, the conventional apparatus for preventing reverse rotation has a drawback of not fully guaranteeing an instantaneous braking.
- Meanwhile, Japanese Utility Model Laid-Open No. 64-38963 discloses an apparatus for preventing reverse rotation, in which an oneway clutch bearing is mounted around the internal circumference of a latch wheel, and a number of rollers of the oneway clutch bearing are fitted around the external circumference of a bushing of a rotating axis.
- However, the above apparatus has a drawback in that the rolling velocity of the roller contacting surface decreases due to the small diameter of the rotating bushing, into which the rollers are fitted. This creates a problem of not fully guaranteeing an instantaneous braking. Also, a load is partially put on the abutting surface of each component when preventing reverse rotation, thereby resulting in a possible deformation and a low durability of the roller.
- The conventional bearing has no on/off switching function, and operates in uni-direction, thereby posing a problem of additionally providing a separate apparatus around the periphery of the oneway clutch bearing. For instance, the apparatus disclosed in Japanese Patent Laid-Open No. 64-38963 has a construction in which a gear is fitted into an outer periphery of the oneway clutch bearing to prevent its rotation, while the gear teeth are detachably engaged with the gear. Thus, the conventional apparatus not only has a complicated construction but also requires a wide mounting space.
- In view of the above drawbacks, U.S. Pat. No. 5,494,232 issued to Hirano et al. on Feb. 27, 1996 (“Hirano”) discloses another apparatus for preventing reverse rotation of a spinning reel used for fishing. Referring to FIG. 4, the apparatus for preventing reverse rotation disclosed in Hirano comprises a
circular holder 109 rotatably mounted on a bushing, a circularexternal frame 110 rotatably fixed on a reel casting, androlling members 107 retained by thecircular holder 109 and the circularexternal frame 110. Thecircular holder 109 comprises aguide recess 108 for receiving therolling members 107 therein. Eachguide recess 108 has anopen slot 108′ at its lower portion, and therolling members 107 received by theguide recess 108 through theopen slot 108′ is partially exposed to be contacted with the bushing. Therolling members 107 contact with the internal surface of the circularexternal frame 110 to function as a wedge. Aspring 111 is provided inside the guide recess 108 for biasing therolling members 107 to wedge thebushing 6. - According to the above construction, the spiral function of the
rolling members 107 is generated by the internal circumference. Specifically, if therolling members 107 are positioned at theconcave portion 122 by means of rectangularinternal surfaces external frame 110, the bushing can freely rotate in clockwise and counterclockwise directions. However, if therolling members 107 are positioned apart from theconcave portion 122, reverse rotation of the bushing is prevented due to a functional contact with therolling members 107. - According to the above construction, one of the
rolling members 107 is received between the twointernal surfaces external frame 110. Thus, the internal surface of the circularexternal frame 110 has an octagonal shape. Considering the size of the apparatus as well as the rotation in both directions of the circular holder mounted on the spinning reel, it is practically impossible for the internal surface to have a geometrical shape which is more rectangular than octagonal. Accordingly, the number of rolling members is limited to four. In that case, if any of therolling members 107 is damaged or the function of the spring for easing the rolling members deteriorates, the bushing is offset to that direction, thereby being unable to prevent reverse rotation of the bushing. Also, the apparatus for preventing reverse rotation as disclosed in the aforementioned patent has a complicated construction with numerous fittings, thereby increasing the manufacturing cost. - Another clutch bearing is disclosed in Korean Utility Model Unexamined Publication No. 96-10656, as shown in FIG. 5. The clutch bearing includes a bearing cover with a clearance adjusting groove formed on an inner surface, and a bearing holder with a roller bearing. The clutch bearing has some problems as below followings:
- Firstly, since the bearing holder is made of a metal, it is difficult to precisely machine bearing receiving grooves and bearing guide protrusions of the bearing holder.
- Secondarily, a spring supporting the roller bearing is separate from the bearing holder. Accordingly, because the bearings are inserted into the bearing holder through the bearing receiving grooves formed on an outer periphery of the bearing holder, the bearing holder has to be maintained in a horizontal state to receive the bearings. Also, while all of bearings are completely inserted into the bearing holder, the bearing holder can be inserted into the bearing cover. This assembling operation is very cumbersome, and a time needed to assembly it is extended.
- Finally, since the spring is separately inserted into the bearing holder, the spring has to have a shape of K so that the spring can smoothly operate. Because the spring has a short length due to its shape, the bearing is stiff in an off-mode.
- Therefore, an object of the present invention is to resolve the above problems, and to provide an oneway clutch bearing capable of being as assembled easily.
- Another object of the present invention is to provide an oneway clutch bearing capable of preventing a roller bearing from being contacted with a bushing in an on-mode.
- To achieve the above object, there is provided an oneway clutch bearing using a frictional force between roller bearings and a bushing, the clutch bearing comprising: a housing made of plastic resin, and including an outer wall, an inner wall, and a bottom portion engaging the outer wall and the inner wall, the bottom portion being provided at its center with a circular opening, and a plurality of bearing supporting bars being protruded at a constant interval from an edge of the circular opening; a bearing holder made of plastic resin, and rotatably disposed between the outer wall and inner wall of the housing; a bearing guide disposed above the bearing holder, inserted between the inner wall and the outer wall of the housing, and having a plurality of arcuate recesses to receive the rollers; and a cover mounted onto an opened end of the housing.
- A height of the bearing supporting bar is slightly higher than that of the outer and inner walls, so that the free end of the bearing supporting bar is inserted to the cover. A plurality of through openings are formed between the outer wall and the inner wall.
- The bearing holder includes a circular base, a tap protruded downward from the base, a plurality of retaining bars protruded upward from the base, and an inverse-U shaped resilient member. The circular base of the bearing holder is inserted into the hollow portion of the housing, with the tap being inserted into a slit of the housing.
- According to the present invention, since the length of the spring of the bearing holder is short, the tension of the spring is weak, thereby making the rotation in clockwise direction smooth.
- The oneway clutch bearing of the present invention provides an advantage in that since the spring guide can be made by a drawing process, the manufacturing time and cost are shorter than those of a conventional clutch bearing.
- Also, since the upper side of the housing is opened, the bearing holder, the bearing guide, and the roller bearing can be inserted in to the housing by turns, so that the assembly of the clutch bearing is easy.
- The above object and other advantages of the present invention will become more apparent by the preferred embodiment thereof with reference to the accompanying drawings, in which:
- FIG. 1 is an exploded perspective view of the oneway clutch bearing according to a preferred embodiment of the present invention.
- FIG. 2 is a plan view illustrating an assembled state of the oneway clutch bearing of FIG. 1.
- FIG. 3 is a view illustrating an on-mode of the oneway clutch bearing according to the present invention.
- FIG. 4 is a view illustrating an off-mode of the present invention in an assembled state.
- FIG. 5 is a partially perspective view of a conventional oneway clutch bearing.
- FIG. 1 is an exploded perspective view of the of the oneway clutch bearing according to the present invention. Referring to FIG. 1, the clutch bearing of the present invention comprises a
housing 10 having one open side and the other closed side. - The
housing 10 is made of plastic resin, and includes a circularouter wall 101, a hexagonalinner wall 101, and abottom portion 103 engaging the outer wall and the inner wall. Thebottom portion 103 is provided at its center with acircular opening 108. A number ofbearing supporting bars 104 are protruded at a constant interval from an edge of thecircular opening 108, and a cavity is formed between theinner wall 102 and thebearing supporting bar 104. A height of thebearing supporting bar 104 is slightly higher than that of the outer andinner walls bearing supporting bar 104 is inserted and fixed to a groove of acover 18 as described below. Aslit 105 having a constant size and a number of throughopenings 106 are form ed between theouter wall 101 and theinner wall 102. - A
bearing holder 12 made of plastic resin is rotatably disposed in a hollow portion of thehousing 10. The bearingholder 12 includes acircular base 121, atap 122 protruded downward from thebase 121, a plurality of retainingbars 123 protruded upward from thebase 121, and an inverse-U shapedresilient member 125 each positioned adjacent to the retainingbar 123. The retainingbar 123 consists of a first inside bar and a second outside bar, the second bar having a width wider than that of the first bar and engaged to the first bar. - The
circular base 121 of the bearingholder 12 is inserted into the hollow portion of thehousing 10, with thetap 122 being inserted into theslit 105 of thehousing 10. Thehousing 10 has astep portion 103 a on a bottom portion thereof, and thebase 121 of the bearingholder 12 is positioned on the lower bottom of the hollow portion. Thetap 122 of the bearingholder 12 is protruded downward from the bottom of the housing, so that the bearingholder 12 is movable by operation of the tap. If thetap 122 moves in the left or right direction, the oneway clutch bearing is switched in an on/off-mode. The “on-mode” means that the oneway clutch bearing rotates in one direction. The “on-mode” means that the oneway clutch bearing can freely rotate clockwise and counterclockwise. - A
bearing guide 14 is forcedly fitted into the hollow portion of thehousing 10, with the bearingholder 12 being inserted into the hollow portion of the housing. It should be noted that the bearingguide 14 is positioned on the upper bottom of the hollow portion not to prevent thebearing holder 12 from rotating. - While the outer periphery of the bearing
guide 14 has a hexagonal shape to coincide with the shape of theinner wall 102, the bearing guide is provided on its inner periphery with a number arcuate recesses to receive therollers 16. These recesses are formed in such a way that each recess has adeep portion 142 and aswallow portion 143, and the bearing holder is made by a drawing process. - The
bearing holder 12, the bearingguide 14, and theroller bearings 16 are mounted in the hollow portion of thehousing 10 by turns, and then thecover 18 is inserted into the opened end of the housing. - The operation of the oneway clutch bearing according to the present invention will now be explained with reference to FIGS. 3 and 4.
- FIG. 3 shows the off-mode of the oneway clutch bearing. In that state, the
roller bearing 16 is positioned on thedeep portion 142 of the bearingguide 14, and is positioned at the back of thebearing supporting bar 104. The bushing (not shown) is contacted with the bearing supporting bar, but not contacted with the roller bearings. Accordingly, since the bushing is not restricted by the roller bearings, the bushing is freely rotatable in any directions. - FIG. 4 shows the on-mode of the oneway clutch bearing. If the bearing
holder 12 rotates counterclockwise as shown in the figure, theroller bearings 16 disposed between thebearing supporting bar 123 and thespring 125 rotate counterclockwise. At that time, the roller bearings are disposed on theswallow portion 143 of the recess. When theroller bearings 16 rotates clockwise with the roller beings being contacted with the bushing, the roller bearings tend to roll to the right along the shallow portion of the recess. At that time, if a clearance does not exist between theroller bearings 16 and the inner periphery of thespring guide 14, and if a clearance does not exist between the roller bearings and the bushing, the roller bearings does not roll between the spring guide and the bushing. In other words, the counterclockwise rotation of the bushing is restricted by 6 roller bearings. - It should be noted that the
spring 125 is disposed at a right side of theroller bearing 16. Specifically, theroller bearing 16 is slightly movable toward the right side against the biasing force of the spring in the on-mode of the clutch bearing. Accordingly, when the bushing rotates, the roller bearing does not apply a resisting force to the bushing. - With the construction of the oneway clutch bearing, since the length of the spring of the bearing holder is short, the tension of the spring is weak, thereby making the rotation in clockwise direction smooth.
- While the present invention has been described and illustrated herein with reference to the preferred embodiment thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. An oneway clutch bearing using a frictional force between roller bearings and a bushing, the clutch bearing comprising:
a housing made of plastic resin, and including an outer wall, an inner wall, and a bottom portion engaging the outer wall and the inner wall, the bottom portion being provided at its center with a circular opening, and a plurality of bearing supporting bars being protruded at a constant interval from an edge of the circular opening;
a bearing holder made of plastic resin, and rotatably disposed between the outer wall and inner wall of the housing;
a bearing guide disposed above the bearing holder, inserted between the inner wall and the outer wall of the housing, and having a plurality of arcuate recesses to receive the rollers; and
a cover mounted onto an opened end of the housing.
2. The oneway clutching bearing as claimed in , wherein a height of the bearing supporting bar is slightly higher than that of the outer and inner walls, so that a free end of the bearing support bar is inserted to the cover.
claim 1
3. The oneway clutching bearing as claimed in , wherein a plurality of through openings are formed between the outer wall and the inner wall.
claim 1
4. The oneway clutching bearing as claimed in , wherein the bearing holder includes a circular base, a tap protruded downward from the base, a plurality of retaining bars protruded upward from the base, and an inverse-U shaped resilient member.
claim 1
5. The oneway clutching bearing as claimed in , wherein the circular base of the bearing holder is inserted into the hollow portion of the housing, with the tap being inserted into a slit of the housing.
claim 4
6. The oneway clutching bearing as claimed in , wherein the housing has a step portion on a bottom portion thereof, the base of the bearing holder is positioned on a lower bottom of the housing, and the bearing guide is positioned on an upper bottom of the housing.
claim 5
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990055092A KR100332053B1 (en) | 1999-12-06 | 1999-12-06 | Oneway clutch bearing |
KRP1999-55092 | 1999-12-06 | ||
KR99-55092 | 1999-12-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010002640A1 true US20010002640A1 (en) | 2001-06-07 |
US6454069B2 US6454069B2 (en) | 2002-09-24 |
Family
ID=19623681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/729,017 Expired - Fee Related US6454069B2 (en) | 1999-12-06 | 2000-12-04 | Oneway clutch bearing |
Country Status (3)
Country | Link |
---|---|
US (1) | US6454069B2 (en) |
JP (1) | JP2001161231A (en) |
KR (1) | KR100332053B1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100357626C (en) * | 2001-04-11 | 2007-12-26 | 拓基轴承株式会社 | One-way overrunning clutch |
KR100505384B1 (en) * | 2002-09-07 | 2005-08-01 | 소기섭 | Ball guide manufacture method of thrust ball bearing |
US7377508B2 (en) * | 2003-05-12 | 2008-05-27 | Lexmark International, Inc. | Pick mechanism and algorithm for an image forming apparatus |
US7182192B2 (en) * | 2004-11-08 | 2007-02-27 | Lexmark International, Inc. | Clutch mechanism and method for moving media within an image forming apparatus |
US20060219494A1 (en) * | 2005-03-30 | 2006-10-05 | Ibc-Hearthware, Inc. | Unidirectional bearing assembly |
US7699305B2 (en) | 2007-03-29 | 2010-04-20 | Lexmark International, Inc. | Smart pick control algorithm for an image forming device |
JP5065128B2 (en) * | 2008-03-31 | 2012-10-31 | Ntn株式会社 | One-way clutch |
CN114526294B (en) * | 2022-02-15 | 2023-07-14 | 上海宇航系统工程研究所 | Indexing type unidirectional transmission device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0951826B1 (en) * | 1992-06-11 | 2003-01-08 | Daiwa Seiko Inc. | Spinning reel for fishing |
JPH08109934A (en) * | 1994-10-12 | 1996-04-30 | Shimano Inc | Roller clutch for bicycle |
JP3339532B2 (en) * | 1994-10-17 | 2002-10-28 | 株式会社シマノ | Spinning reel reverse rotation prevention device |
US5878972A (en) * | 1996-08-29 | 1999-03-09 | Ryobi Ltd. | Release preventing device for fishing reel |
JP3780371B2 (en) * | 1996-12-25 | 2006-05-31 | 株式会社ジェイテクト | One-way clutch |
KR200153576Y1 (en) * | 1997-07-09 | 1999-08-02 | 정대인 | The antibacklash device in the fishing reel |
KR100330485B1 (en) * | 1997-07-14 | 2002-05-10 | 정수진 | Single directional clutch bearing with on/off switching function |
-
1999
- 1999-12-06 KR KR1019990055092A patent/KR100332053B1/en not_active IP Right Cessation
-
2000
- 2000-10-06 JP JP2000308108A patent/JP2001161231A/en active Pending
- 2000-12-04 US US09/729,017 patent/US6454069B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR100332053B1 (en) | 2002-04-13 |
KR20010054311A (en) | 2001-07-02 |
US6454069B2 (en) | 2002-09-24 |
JP2001161231A (en) | 2001-06-19 |
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AS | Assignment |
Owner name: SHIN A SPORTS CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OH, CHUL SUK;REEL/FRAME:011340/0967 Effective date: 20001129 |
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REMI | Maintenance fee reminder mailed | ||
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STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
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Effective date: 20060924 |