Bicycle sprocket and bicycle sprocket assembly
First Claim
1. A bicycle sprocket having a rotational center axis, the bicycle sprocket comprising:
- a sprocket body having an axial width defined in an axial direction parallel to the rotational center axis; and
a chain engagement structure arranged on a radially outer periphery of the sprocket body, the chain engagement structure including;
at least one shifting facilitation area configured to facilitate changing gears; and
a plurality of chain-engaging teeth including at least two neighboring chain-engaging teeth each including a chain-engaging portion configured to engage with a bicycle chain, the chain-engaging portion having an axial chain-engaging width defined in the axial direction, the axial chain-engaging width being larger than the axial width of the sprocket body, the chain-engaging portion being configured to face a link plate of the bicycle chain in the axial direction.
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Accused Products
Abstract
A bicycle sprocket has a rotational center axis. The bicycle sprocket comprises a sprocket body and a chain engagement structure. The sprocket body has an axial width defined in an axial direction parallel to the rotational center axis. The chain engagement structure is arranged on a radially outer periphery of the sprocket body. The chain engagement structure includes at least one shifting facilitation area and a plurality of chain-engaging teeth. The at least one shifting facilitation area is configured to facilitate changing gears. The plurality of chain-engaging teeth include at least two neighboring chain-engaging teeth each including a chain-engaging portion configured to engage with a bicycle chain. The chain-engaging portion has an axial chain-engaging width defined in the axial direction. The axial chain-engaging width is larger than the axial width of the sprocket body.
52 Citations
25 Claims
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1. A bicycle sprocket having a rotational center axis, the bicycle sprocket comprising:
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a sprocket body having an axial width defined in an axial direction parallel to the rotational center axis; and a chain engagement structure arranged on a radially outer periphery of the sprocket body, the chain engagement structure including; at least one shifting facilitation area configured to facilitate changing gears; and a plurality of chain-engaging teeth including at least two neighboring chain-engaging teeth each including a chain-engaging portion configured to engage with a bicycle chain, the chain-engaging portion having an axial chain-engaging width defined in the axial direction, the axial chain-engaging width being larger than the axial width of the sprocket body, the chain-engaging portion being configured to face a link plate of the bicycle chain in the axial direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 23, 24, 25)
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13. A bicycle sprocket assembly having a rotational center axis, the bicycle sprocket assembly comprising:
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a first sprocket including; a first sprocket body; and a first chain engagement structure arranged on a radially outer periphery of the first sprocket body, the first chain engagement structure including; at least one first shifting facilitation area configured to facilitate changing gears; and a plurality of first chain-engaging teeth, at least one of the plurality of first chain-engaging teeth including a first chain-engaging portion configured to engage with a bicycle chain, the first chain-engaging portion having a first axial chain-engaging width defined in an axial direction parallel to the rotational center axis; and a second sprocket including; a second sprocket body; and a second chain engagement structure arranged on a radially outer periphery of the second sprocket body, the second chain engagement structure including; at least one second shifting facilitation area configured to facilitate changing gears; and a plurality of second chain-engaging teeth, at least one of the plurality of second chain-engaging teeth including a second chain-engaging portion configured to engage with the bicycle chain, the second chain-engaging portion having a second axial chain-engaging width defined in the axial direction, the first axial chain-engaging width being different from the second axial chain-engaging width, a total number of the plurality of second chain-engaging teeth being smaller than a total number of the plurality of first chain-engaging teeth. - View Dependent Claims (14, 15, 16)
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17. A bicycle sprocket assembly having a rotational center axis, the bicycle sprocket assembly comprising:
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a first sprocket including; a first sprocket body; and a first chain engagement structure arranged on a radially outer periphery of the first sprocket body, the first chain engagement structure including; at least one first shifting facilitation area configured to facilitate changing gears; and a plurality of first chain-engaging teeth, at least one of the plurality of first chain-engaging teeth including a first chain-engaging portion configured to engage with a bicycle chain, the first chain-engaging portion having a first axial chain-engaging width defined in an axial direction parallel to the rotational center axis; a second sprocket including; a second sprocket body; and a second chain engagement structure arranged on a radially outer periphery of the second sprocket body, the second chain engagement structure including; at least one second shifting facilitation area configured to facilitate changing gears; and a plurality of second chain-engaging teeth, at least one of the plurality of second chain-engaging teeth including a second chain-engaging portion configured to engage with the bicycle chain, the second chain-engaging portion having a second axial chain-engaging width defined in the axial direction, a total number of the plurality of second chain-engaging teeth being smaller than a total number of the plurality of first chain-engaging teeth; a third sprocket positioned between the first sprocket and the second sprocket in the axial direction and adjacent to the first sprocket without another sprocket, the third sprocket including; a third sprocket body; and a third chain engagement structure arranged on a radially outer periphery of the third sprocket body, the third chain engagement structure including; at least one third shifting facilitation area configured to facilitate changing gears; and a plurality of third chain-engaging teeth, at least one of the plurality of third chain-engaging teeth including a third chain-engaging portion configured to engage with the bicycle chain, the third chain-engaging portion having a third axial chain-engaging width defined in the axial direction, a total number of the plurality of third chain-engaging teeth being smaller than the total number of the plurality of first chain-engaging teeth and larger than the total number of the plurality of second chain-engaging teeth; a fourth sprocket positioned between the second sprocket and the third sprocket in the axial direction and adjacent to the second sprocket without another sprocket, the fourth sprocket including; a fourth sprocket body; and a fourth chain engagement structure arranged on a radially outer periphery of the fourth sprocket body, the fourth chain engagement structure including; at least one fourth shifting facilitation area configured to facilitate changing gears; and a plurality of fourth chain-engaging teeth, at least one of the plurality of fourth chain-engaging teeth including a fourth chain-engaging portion configured to engage with the bicycle chain, the fourth chain-engaging portion having a fourth axial chain-engaging width defined in the axial direction, a total number of the plurality of fourth chain-engaging teeth being smaller than the total number of the plurality of third chain-engaging teeth and larger than the total number of the plurality of second chain-engaging teeth; the first chain-engaging portion of the first chain-engaging tooth being apart from the third chain-engaging portion of the third chain-engaging tooth by a first axial distance defined in the axial direction; the second chain-engaging portion of the second chain-engaging tooth being apart from the fourth chain-engaging portion of the fourth chain-engaging tooth by a second axial distance defined in the axial direction; and the first axial distance being different from the second axial distance. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification