A bicycle hub is provided with a hub axle, a hub shell and a pair of bearing units. Each of the bearing units has an inner race supported on one axle end of the hub axle, an outer race threadedly coupled to an inner tubular surface of the hub shell, and a plurality of first rolling members disposed
A bicycle hub is provided with a hub axle, a hub shell and a pair of bearing units. Each of the bearing units has an inner race supported on one axle end of the hub axle, an outer race threadedly coupled to an inner tubular surface of the hub shell, and a plurality of first rolling members disposed between the inner and outer races. Preferably, a first stopper ring is coupled to one of the first inner and outer races to form an axial abutment that is arranged to contact the other of the first inner and outer races to prevent axial separation of the first inner and outer races prior to installation of the bearing unit between the hub axle and the hub shell.
대표청구항▼
What is claimed is: 1. A bicycle hub comprising: a hub axle having a first axle end and a second axle end with a center axis extending between the first and second axle ends; a hub shell having a first shell end and a second shell end with an inner tubular surface forming a central passage extendin
What is claimed is: 1. A bicycle hub comprising: a hub axle having a first axle end and a second axle end with a center axis extending between the first and second axle ends; a hub shell having a first shell end and a second shell end with an inner tubular surface forming a central passage extending between the first and second shell ends, the hub axle being disposed within the central passage of the hub shell, the inner tubular surface at said first shell end being formed with a first step-shaped end portion having an outer set of internal threads, an inner set of internal threads and an outer axial abutment surface formed between the outer set of internal threads and the inner set of internal threads; a first bearing unit disposed between the first axle end of the hub axle and the first shell end of the hub shell to rotatably support the first shell end of the hub shell on the first axle end of the hub axle, the first bearing unit including: a first inner race supported on the first axle end of the hub axle, a first outer race threadedly coupled to the inner set of internal threads of the inner tubular surface of the hub shell, and a plurality of first rolling members disposed between the first. inner race and the first outer race; and a second bearing unit disposed between the second axle end of the hub axle and the second shell end of the hub shell to rotatably support the second shell end of the hub shell on the second axle end of the hub axle; wherein: the first inner race is an inner cone that includes a first outer angular bearing surface facing towards the second axle end and contacting one axial side of the first rolling members such that the first outer angular bearing surface contacts and supports each of the first rolling members at an inner peripheral area and an axial facing area; and the first outer race is an outer cup that includes a first inner angular bearing surface facing towards the first axle end and contacting the first rolling members on an axial side that is opposite from the first outer angular bearing surface such that the first inner angular bearing surface contacts and supports each of the first rolling members at an outer peripheral area and an axial facing area. 2. The bicycle hub according to claim 1, wherein the first outer race has a first outer peripheral surface with first external threads that are threadedly engaged with first internal threads formed on the inner tubular surface of the hub shell. 3. The bicycle hub according to claim 1, wherein the first outer race has a first tool engagement structure at its axial end that is configured to receive a tool to rotate the first outer race. 4. The bicycle hub according to claim 1, wherein the second bearing unit includes a second inner race supported by the second axle end of the hub axle, a second outer race threadedly coupled to the inner tubular surface of the hub shell, and a plurality of second rolling members disposed between the second inner race and the second outer race. 5. The bicycle hub according to claim 4, wherein the second inner race is an inner cone that includes a second outer angular bearing surface facing towards the first axle end and contacting one axial side of the second rolling members such that the second outer angular bearing surface contacts and supports each of the second rolling members at an inner peripheral area and an axial facing area; and the second outer race is an outer cup that includes a second inner angular bearing surface facing towards the second axle end and contacting the second rolling members on an axial side that is opposite from the second outer angular bearing surface such that the second inner angular bearing surface contacts and supports each of the second rolling members at an outer peripheral area and an axial facing area. 6. The bicycle hub according to claim 5, further comprising a first axial compression structure coupled to the first axle end of the hub axle and arranged to axially contact the first inner race of the first bearing unit; a second axial compression structure coupled to the second axle end of the hub axle and arranged to axially contact the second bearing unit; and a bearing spacer disposed over an outer periphery of the hub axle, the bearing spacer having a first spacer end contacting the first inner race of the first bearing unit and a second spacer end contacting the second bearing unit. 7. The bicycle hub according to claim 6, wherein the first outer race has a first outer peripheral surface with first external threads that are threadedly engaged with first internal threads formed on the inner tubular surface of the hub shell; and the second outer race has a second outer peripheral surface with second external threads that are threadedly engaged with second internal threads formed on the inner tubular surface of the hub shell. 8. The bicycle hub according to claim 1, further comprising a first axial compression structure coupled to the first axle end of the hub axle and arranged to axially contact the first inner race of the first bearing unit; and a second axial compression structure coupled to the second axle end of the hub axle and arranged to axially contact a second inner race of the second bearing unit. 9. The bicycle hub according to claim 1, further comprising a bearing spacer disposed over an outer periphery of the hub axle, the bearing spacer having a first spacer end contacting the first inner race of the first bearing unit and a second spacer end contacting the second bearing unit. 10. The bicycle hub according to claim 7, wherein the first outer race has a first tool engagement structure at its axial end that is configured to receive a tool to rotate the first outer race; and the second outer race has a second tool engagement structure at its axial end that is configured to receive a tool to rotate the second outer race. 11. A bicycle hub comprising: a hub axle having a first axle end and a second axle end with a center axis extending between the first and second axle ends; a hub shell having a first shell end and a second shell end with an inner tubular surface forming a central passage extending between the first and second shell ends, the hub axle being disposed within the central passage of the hub shell, the inner tubular surface at said first shell end being formed with a first step-shaped end portion having an outer set of internal threads, an inner set of internal threads and an outer axial abutment surface formed between the outer set of internal threads and the inner set of internal threads; a first bearing unit disposed between the first axle end of the hub axle and the first shell end of the hub shell to rotatably support the first shell end of the hub shell on the first axle end of the hub axle, the first bearing unit including: a first inner race supported by the first axle end of the hub axle, a first outer race supported by the inner set of internal threads of the inner tubular surface of the hub shell, a plurality of first rolling members disposed between the first inner race and the first outer race, and a first stopper ring coupled to one of the first inner and outer races to form an axial abutment that is arranged to contact the other of the first inner and outer races to prevent axial separation of the first inner and outer races prior to installation of the first bearing unit between the hub axle and the hub shell; and a second bearing unit disposed between the second axle end of the hub axle and the second shell end of the hub shell to rotatably support the second shell end of the hub shell on the second axle end of the hub axle. 12. The bicycle hub according to claim 11, wherein the first inner race is an inner cone that includes a first outer angular bearing surface facing towards the second axle end and contacting one axial side of the first rolling members such that the first outer angular bearing surface contacts and supports each of the first rolling members at an inner peripheral area and an axial facing area; and the first outer race is an outer cup that includes a first inner angular bearing surface facing towards the first axle end and contacting the first rolling members on an axial side that is opposite from the first outer angular bearing surface such that the first inner angular bearing surface contacts and supports each of the first rolling members at an outer peripheral area and an axial facing area. 13. The bicycle hub according to claim 11, wherein the first stopper ring is a split ring that is located in a groove formed in the first inner race. 14. The bicycle hub according to claim 11, wherein the first outer race has a first outer peripheral surface with first external threads that are threadedly engaged with first internal threads formed on the inner tubular surface of the hub shell. 15. The bicycle hub according to claim 11, wherein the second bearing unit includes a second inner race supported by the second axle end of the hub axle, a second outer race supported by the inner tubular surface of the hub shell, a plurality of second rolling members disposed between the second inner race and the second outer race, a second stopper ring coupled to one of the second inner and outer races to form an axial abutment that is arranged to contact the other of the second inner and outer races to prevent axial separation of the second inner and outer races prior to installation of the second bearing unit between the hub axle and the hub shell. 16. The bicycle hub according to claim 15, wherein the first inner race is an inner cone that includes a first outer angular bearing surface facing towards the second axle end and contacting one axial side of the first rolling members such that the first outer angular bearing surface contacts and supports each of the first rolling members at an inner peripheral area and an axial facing area; the first outer race is an outer cup that includes a first inner angular bearing surface facing towards the first axle end and contacting the first rolling members on an axial side that is opposite from the first outer angular bearing surface such that the first inner angular bearing surface contacts and supports each of the first rolling members at an outer peripheral area and an axial facing area; the second inner race is an inner cone that includes a second outer angular bearing surface facing towards the first axle end and contacting one axial side of the second rolling members such that the second outer angular bearing surface contacts and supports each of the second rolling members at an inner peripheral area and an axial facing area; and the second outer race is an outer cup that includes a second inner angular bearing surface facing towards the second axle end and contacting the second rolling members on an axial side that is opposite from the second outer angular bearing surface such that the second inner angular bearing surface contacts and supports each of the second rolling members at an outer peripheral area and an axial facing area. 17. The bicycle hub according to claim 15, wherein the first stopper ring is a split ring that is located in a groove formed in the first inner race; and the second stopper ring is a split ring that is located in a groove formed in the second inner race. 18. The bicycle hub according to claim 15, wherein the first outer race has a first outer peripheral surface with first external threads that are threadedly engaged with first internal threads formed on the inner tubular surface of the hub shell; and the second outer race has a second outer peripheral surface with second external threads that are threadedly engaged with second internal threads formed on the inner tubular surface of the hub shell. 19. The bicycle hub according to claim 15, wherein the first outer race has a first tool engagement structure at its axial end that is configured to receive a tool to rotate the first outer race; and the second outer race has a second tool engagement structure at its axial end that is configured to receive a tool to rotate the second outer race. 20. A bicycle hub comprising: a hub axle having a first axle end and a second axle end with a center axis extending between the first and second axle ends; a hub shell having a first shell end and a second shell end with an inner tubular surface forming a central passage extending between the first and second shell ends, the hub axle being disposed within the central passage of the hub shell, the inner tubular surface at said first shell end being formed with a first step-shaped end portion having an outer set of internal threads, an inner set of internal threads and an outer axial abutment surface formed between the outer set of internal threads and the inner set of internal threads; a first bearing unit disposed between the first axle end of the hub axle and the first shell end of the hub shell to rotatably support the first shell end of the hub shell on the first axle end of the hub axle, the first bearing unit including: a first inner race supported on the first axle end of the hub axle, a first outer race threadedly coupled to the inner set of internal threads of the inner tubular surface of the hub shell, and a plurality of first rolling members disposed between the first inner race and the first outer race; a second bearing unit disposed between the second axle end of the hub axle and the second shell end of the hub shell to rotatably support the second shell end of the hub shell on the second axle end of the hub axle; a first axial compression structure coupled to the first axle end of the hub axle and arranged to axially contact the first inner race of the first bearing unit; and a second axial compression structure coupled to the second axle end of the hub axle and arranged to axially contact a second inner race of the second bearing unit.
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이 특허에 인용된 특허 (21)
Ohtsu Tomohiko,JPX, Bearing assembly for bicycle parts.
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