CN109383702A

CN109383702A - Bicycle chain

Info

Publication number: CN109383702A
Application number: CN201810733623.8A
Authority: CN
Inventors: 福森毅; 江村笃裕
Original assignee: Shimano Inc
Current assignee: Shimano Inc
Priority date: 2017-08-08
Filing date: 2018-07-06
Publication date: 2019-02-26
Anticipated expiration: 2038-07-06
Also published as: TW202212710A; TWI752245B; TW201910198A; DE102018116401A1; TW201910663A; TWI814164B; CN113650719A; TWI749244B; CN115503866A; CN109383704B; CN109383703B; CN109383704A; TWI744538B; DE102018116403A1; CN109383703A; CN109383702B; DE102018116402A1; TW201910664A; CN113650719B

Abstract

Bicycle chain includes the first inner plate and the second inner plate.First inner plate includes link ends in first, chain middle part in link ends and first in second.Second inner plate includes link ends in third, chain middle part in link ends and second in the 4th.Link ends edge has the first chamfering extended around chain central axis in first in first, so that a part of the first chamfering is arranged in the first circumferential zones, when the axial direction observation of chain central axis along first, the first circumferential zones chain longitudinal centre line out of first is limited to the first reference line.First circumferential zones are less than 14 degree.

Description

Bicycle chain

Technical field

The present invention relates to bicycle chains.

Background technique

Cycling is becoming the entertainment form being becoming increasingly popular and mode of transportation.In addition, cycling is As the competitive sport welcome by amateur and professional person very much.No matter bicycle be for entertaining, traffic or competing Match, bicycle industry is all in all parts for continuously improving bicycle.A kind of bicycle assembly parts redesigned extensively It is chain.

Summary of the invention

According to the first aspect of the invention, a kind of bicycle chain includes the first inner plate and the second inner plate.In first Carrier bar includes link ends in first, chain middle part in link ends and first in second.Link ends include having the in described first Chain is open in the first of chain central axis in one.Link ends include chain opening in second in described second, and chain is opened in described second Mouth has chain central axis in second of the chain central axis extension along described first.In described second chain central axis with it is described Chain central axis is spaced apart in first on chain longitudinal direction in first.Chain middle part is by the end of the chain in described first in described first Link ends interconnect in portion and described second.Link ends in described first, chain in link ends and described first in described second Middle part defines chain neighboring in first.Chain neighboring includes link ends edge in first, in second in described first Chain middle edge pair in link ends edge and first.Link ends edge extends around link ends in described first in described first. Link ends edge extends around link ends in described second in described second.Chain middle edge is to along described first in described first Interior chain middle part extends in link ends edge and described second between link ends edge in described first.Second inner plate includes Link ends in third, chain middle part in link ends and second in the 4th.Link ends include chain opening, institute in third in the third It states the opening of chain in third and has and extend through chain central axis in the third that chain is open in described first.Link ends in described 4th Including chain opening in the 4th, chain opening has chain central axis in extend through in described second that chain is open the 4th in the described 4th Line.Chain central axis and chain central axis in the third are spaced apart in second on chain longitudinal direction in described 4th.It is described Chain middle part interconnects link ends in link ends in the third and the described 4th in second.Link ends in the third, Chain middle part defines chain neighboring in second in link ends and described second in described 4th.Chain outer periphery in described second Edge includes link ends edge in third, chain middle edge pair in link ends edge and second in the 4th.Link ends in the third Edge extends around link ends in the third.Link ends edge extends around link ends in the described 4th in described 4th.Institute Chain middle edge is stated in second to chain middle part chain in link ends edge and the described 4th in the third along described second Extend between end edge.In described first on chain longitudinal direction from chain central axis in described first to described first in chain End edge limits the first maximum distance.In described second on chain longitudinal direction out of described third chain central axis to described The edge limited third maximum distance of link ends in third.From chain central axis in the described 4th on chain longitudinal direction in described second Line is to edge limited 4th maximum distance of link ends in the described 4th.First maximum distance be greater than the third maximum away from From.Link ends edge has the first chamfering that chain central axis extends in described first in described first, so that described the A part of one chamfering is arranged in the first circumferential zones, when from the axial direction of chain central axis in described first, First circumferential zones chain longitudinal centre line out of first is limited to the first reference line.Chain longitudinal centre line hangs down in described first The directly chain central axis in chain central axis and described second in described first.First reference line is from described first in chain Mandrel line extends radially outwardly.First circumferential zones are less than 14 degree.

Using the bicycle chain according to first aspect, since a part of the first chamfering is arranged in the first circumferential zones In, therefore the first chamfering improves the shift property of bicycle chain.

According to the second aspect of the invention, it is configured so that according to the bicycle chain of first aspect when along the axial direction side To when observation, first chamfering and first Nei Lian longitudinal center line overlap.

Using the bicycle chain according to second aspect, the first chamfering further improves the gear shift of bicycle chain Energy.

According to the third aspect of the invention we, it is configured so that described first according to the bicycle chain of first or second aspect Chamfering from one of chain middle edge centering in described first in described first chain central axis extend to chain in described first Middle edge centering another.

Using the bicycle chain according to the third aspect, the first chamfering further improves the gear shift of bicycle chain Energy.

According to the fourth aspect of the invention, according to first, into the third aspect, the bicycle chain of either side is configured to make It obtains in the state that the bicycle chain is installed to cycle frame, first inner plate is arranged in the cycle frame Between second inner plate.

Using the bicycle chain according to fourth aspect, the gear shift operation in front chain wheel assembly can be made smooth.

According to the fifth aspect of the invention, it is configured to according to the bicycle chain in face either in first to fourth aspect So that first inner plate includes the first inner surface and the first outer surface towards second inner plate, first appearance First inner surface is arranged in the opposite side on the axial direction in face.Relative to link ends in described first from described First outer surface limits first axis thickness to first inner surface.The first axis thickness is equal to or less than 0.9mm.

Using the bicycle chain according to the 5th aspect, the shift property of bicycle chain can be effectively improved.

According to the sixth aspect of the invention, it is configured to according to the bicycle chain in face either in the first to the 5th aspect So that link ends have the first minimum radial distance and the first maximum radial distance in described first.First smallest radial away from From in described first in chain longitudinal direction and described first in first vertical direction of chain central axis upright from described Chain central axis is limited to link ends edge in described first in one.First maximum radial distance chain in described first is vertical Link ends edge in described first is limited to from chain central axis in described first on direction.First maximum radial distance Greater than first minimum radial distance.

Using the bicycle chain according to the 6th aspect, the shift property of bicycle chain can be further improved.

According to the seventh aspect of the invention, the described first most path is configured so that according to the bicycle chain of the 6th aspect It is equal to or more than 4.36mm to distance.

Using the bicycle chain according to the 7th aspect, the shift property of bicycle chain can be further improved.

According to the eighth aspect of the invention, it is configured to according to the bicycle chain in face either in the first to the 5th aspect So that link ends have from chain central axis in described first and are limited to the of link ends edge in described first in described first One radial distance.First radial distance is equal to or more than 4.36mm.

Using the bicycle chain according to eighth aspect, the shift property of bicycle chain can be further improved.

According to the ninth aspect of the invention, according to first, into eighth aspect, the bicycle chain of either side is configured to make Obtain the first radial width that there is first chamfering radial direction of the chain central axis in relative to described first to limit.When When along axial direction observation, described in a direction of first radial width from chain middle edge centering in described first Chain longitudinal centre line increases in first.

Using the bicycle chain according to the 9th aspect, the shift property of bicycle chain can be further improved.

It according to the tenth aspect of the invention, further include the according to the bicycle chain in face either in the first to the 9th aspect One chain rolling ring, the first chain rolling ring include the first outer radial periphery surface and first outer radial periphery surface are arranged in First radially inner peripheral surface of radially inner side.First inner plate includes the first inner surface and the first outer surface.Described first Inner surface is towards second inner plate.First inner surface is arranged on the axial direction in first outer surface In opposite side.Link ends include the first tubular portion in described first, and first tubular portion is from first inner surface described in Axial direction extends to support the first chain rolling ring.In along described first when the observation of chain central axis, described first Tubular portion is around chain opening in described first.When the first chain rolling ring along described first chain longitudinal direction towards described Link ends are mobile when first radially inner peripheral surface of the first chain rolling ring contacts first tubular portion in one, Chain longitudinal direction is outside at the edge of first chamfering and first diameter of the first chain rolling ring along described first The first extended distance is limited between a part of perimeter surface.The range of first extended distance is 0.95mm to 1.1mm.

Using the bicycle chain according to the tenth aspect, the shift property of bicycle chain can be further improved.

According to the eleventh aspect of the invention, it is constructed according to the bicycle chain in face either in the first to the tenth aspect At making link ends edge in the described 4th that there is the 4th chamfering extended around chain central axis in the described 4th.Described 4th Chamfering includes step part.

Using the bicycle chain according to the tenth one side, the shift property of bicycle chain can be further improved.

According to the twelfth aspect of the invention, according to the bicycle chain structure in face either in the first to the tenth one side It causes so that in the bicycle chain and in the state of sprocket engagement, when along axial direction observation, in described first Link ends are Chong Die with the tooth of the sprocket wheel to provide overlapping region.The overlapping region has the maximum equal to or more than 0.45mm Circumferential lengths.

Using the bicycle chain according to the 12nd aspect, chain retention property can be improved.

According to the thirteenth aspect of the invention, the maximum week is configured so that according to the bicycle chain of the 12nd aspect It is equal to or less than 3mm to length.

Using the bicycle chain according to the 13rd aspect, chain retention property can be further improved.

According to the fourteenth aspect of the invention, a kind of bicycle chain includes the first inner plate, the second inner plate, outside first Carrier bar and the second outer plate.First inner plate includes link ends in first, chain middle part in link ends and first in second.It is described Link ends include chain opening in have chain central axis in first first in first.Link ends include in second in described second Chain is open, and chain opening has chain central axis in second of the chain central axis extension along described first in described second.It is described Chain central axis and chain central axis in described first are spaced apart in first on chain longitudinal direction in second.Chain in described first Middle part interconnects link ends in link ends and described second in described first.Link ends, described second in described first Chain middle part defines chain neighboring in first in interior link ends and described first.Chain neighboring includes the in described first Link ends edge in one, chain middle edge pair in link ends edge and first in second.Link ends edge surrounds in described first Link ends extend in described first.Link ends edge extends around link ends in described second in described second.In described first In link ends edge and described second link ends edge in described first for chain middle part to along described first for chain middle edge Between extend.Second inner plate includes link ends in third, chain middle part in link ends and second in the 4th.Chain in the third End includes chain opening in third, and chain opening, which has, in the third extends through in the third that chain is open in described first in chain Mandrel line.Link ends include chain opening in the 4th in described 4th, and chain opening, which has, in the described 4th extends through described second Chain central axis in the 4th of interior chain opening.Chain central axis is with chain central axis in the third in second in described 4th It is spaced apart on chain longitudinal direction.Chain middle part is mutual by link ends in link ends in the third and the described 4th in described second Connection.Link ends in the third, chain middle part defines chain periphery in second in link ends and described second in the described 4th Edge.Chain neighboring includes link ends edge in third, in the 4th in link ends edge and second among chain in described second Edge pair.Link ends edge extends around link ends in the third in the third.Link ends edge surrounds in described 4th Link ends extend in described 4th.Chain middle edge is to chain middle part chain in the third along described second in described second Extend between link ends edge in end edge and the described 4th.From chain in described first on chain longitudinal direction in described first Central axis is to edge limited first maximum distance of link ends in described first.From described on chain longitudinal direction in described second The edge limited third maximum distance of link ends in chain central axis to the third in third.First maximum distance is greater than institute State third maximum distance.In the state that the bicycle chain is installed to cycle frame, the first inner plate setting exists Between the cycle frame and second inner plate.First outer plate include the first outer link ends, the second outer link ends and First exterior chain middle part.The first outer link ends include that the first exterior chain with the first exterior chain central axis is open.Described Two outer link ends include the second exterior chain opening, and second exterior chain opening has the extended along the first exterior chain central axis Two exterior chain central axis.The first exterior chain middle part connects mutually the described first outer link ends and the second outer link ends It connects.Second outer plate includes the outer link ends of third, the 4th outer link ends, the second exterior chain middle part and protrusion.The third exterior chain End includes third exterior chain opening, and the third exterior chain opening has in the third exterior chain for extending through the first exterior chain opening Mandrel line.The 4th outer link ends are open including the 4th exterior chain, and the 4th exterior chain opening, which has, extends through described second 4th exterior chain central axis of exterior chain opening.The second exterior chain middle part is by link ends outside the third and the 4th exterior chain End interconnects.The protrusion extends from the second exterior chain middle part towards the first exterior chain middle part.Described first Inner plate is arranged in first outer plate and second inner plate in described first on the axial direction of chain central axis Between.Second inner plate is arranged between first inner plate and second outer plate on the axial direction.

Using the bicycle chain according to fourteenth aspect, chain retention property can be improved.

According to the fifteenth aspect of the invention, it is configured so that outside described first according to the bicycle chain of fourteenth aspect Carrier bar does not have the protrusion extended along the axial direction from the first exterior chain middle part towards the second exterior chain middle part.

Using the bicycle chain according to the 15th aspect, chain retention property can be further improved.

According to the sixteenth aspect of the invention, institute is configured so that according to the bicycle chain of the 14th or the 15th aspect Stating the first exterior chain middle part includes the first exterior chain intermediate surface along the axial direction towards the second exterior chain middle part.Institute Stating the second exterior chain middle part includes the second exterior chain intermediate surface along the axial direction towards the first exterior chain middle part.Institute It states protrusion and extends along the axial direction from the second exterior chain intermediate surface towards the first exterior chain intermediate surface.

Using the bicycle chain according to the 16th aspect, chain retention property can be further improved.

According to the seventeenth aspect of the invention, a kind of bicycle chain includes the first inner plate and the second inner plate.First Inner plate includes link ends in first, chain middle part in link ends and first in second.Link ends include having in described first Chain is open in the first of chain central axis in first.Link ends include chain opening in second, chain in described second in described second It is open with chain central axis in chain central axis extends along described first second.Chain central axis and institute in described second Chain central axis is stated in first to be spaced apart on chain longitudinal direction in first.Chain middle part is by chain in described first in described first Link ends interconnect in end and described second.Second inner plate includes link ends in third, link ends and second in the 4th Interior chain middle part.Link ends include chain opening in third in the third, and chain opening is described with extending through in the third Chain central axis in the third that chain is open in first.Link ends include chain opening in the 4th, chain in the described 4th in described 4th Being open has chain central axis in extend through chain opening in described second the 4th.In described 4th chain central axis with it is described Chain central axis is spaced apart in second on chain longitudinal direction in third.Chain middle part is by the end of the chain in the third in described second Link ends interconnect in portion and the described 4th.First inner plate includes the first inner surface and the first outer surface.Described One inner surface is towards second inner plate.First outer surface is arranged in first inner surface on the axial direction Opposite side on.First axis is limited from first outer surface to first inner surface relative to link ends in described first Thickness.The first axis thickness is equal to or less than 0.79mm.

Using according to the 17th aspect bicycle chain, the tooth of sprocket wheel can be smoothly inserted into the first inner plate and In space between second inner plate.This improves the shift property of bicycle chain.

According to the eighteenth aspect of the invention, it is configured so that in described first according to the bicycle chain of the 17th aspect Chain middle part includes recess portion.It is limited relative to chain middle part in described first from first outer surface to first inner surface Second axial width.Second axial width is less than the first axis thickness.

Using the bicycle chain according to the 18th aspect, shift property can be improved.

According to the nineteenth aspect of the invention, a kind of bicycle chain includes the first inner plate and the second inner plate.First Inner plate includes link ends in first, chain middle part in link ends and first in second.Link ends include having in described first Chain is open in the first of chain central axis in first.Link ends include chain opening in second, chain in described second in described second It is open with chain central axis in chain central axis extends along described first second.Chain central axis and institute in described second Chain central axis is stated in first to be spaced apart on chain longitudinal direction in first.Chain middle part is by chain in described first in described first Link ends interconnect in end and described second.Second inner plate includes link ends in third, link ends and second in the 4th Interior chain middle part.Link ends include chain opening in third in the third, and chain opening is described with extending through in the third Chain central axis in the third that chain is open in first.Link ends include chain opening in the 4th, chain in the described 4th in described 4th Being open has chain central axis in extend through chain opening in described second the 4th.In described 4th chain central axis with it is described Chain central axis is spaced apart in second on chain longitudinal direction in third.Chain middle part is by the end of the chain in the third in described second Link ends interconnect in portion and the described 4th.First inner plate includes the first inner surface and the first outer surface.Described One inner surface is towards second inner plate.First outer surface is arranged in first inner surface on the axial direction Opposite side on.Second inner plate includes the second inner surface and the second outer surface.Second inner surface is towards described One inner plate.Second inner surface is arranged in the opposite side on the axial direction in second outer surface.Described in Axial direction from chain middle part in described first to described second in chain middle part limit axial distance.The model of the axial distance It encloses for 2.1mm to 2.3mm.

Using the bicycle chain according to the 19th aspect, the robustness of bicycle chain can be improved.

According to a twentieth aspect of the invention, according to the 19th aspect bicycle chain be configured so that the axial direction away from From for 2.2mm.

Using the bicycle chain according to the 20th aspect, the robustness of bicycle chain can be further improved.

Detailed description of the invention

It by reference to the detailed description below in conjunction with attached drawing, can be readily available, while more fully understand of the invention More complete intention and its many bonus.

Fig. 1 is the side elevational of the bicycle with the power train using bicycle chain according to first embodiment Figure.

Fig. 2 is the partial perspective view of bicycle chain shown in FIG. 1, wherein having sprocket wheel.

Fig. 3 is the partial plan layout of bicycle chain shown in FIG. 1.

Fig. 4 is the perspective view of the first inner plate of bicycle chain shown in Fig. 1.

Fig. 5 is another perspective view of the first inner plate of bicycle chain shown in FIG. 1.

Fig. 6 is the side elevation view of the first inner plate of bicycle chain shown in FIG. 1.

Fig. 7 is the bottom view of the first inner plate of bicycle chain shown in FIG. 1.

Fig. 8 is another side elevation view of the first inner plate of bicycle chain shown in FIG. 1.

Fig. 9 is the perspective view of the second inner plate of bicycle chain shown in FIG. 1.

Figure 10 is another perspective view of the second inner plate of bicycle chain shown in FIG. 1.

Figure 11 is the side elevation view of the second inner plate of bicycle chain shown in FIG. 1.

Figure 12 is the bottom view of the second inner plate of bicycle chain shown in FIG. 1.

Figure 13 is another side elevation view of the second inner plate of bicycle chain shown in FIG. 1.

Figure 14 is the amplification side elevation view of the first inner plate of bicycle chain shown in FIG. 1.

Figure 15 is the amplification side elevation view of the second inner plate of bicycle chain shown in FIG. 1.

Figure 16 is the sectional view along the line XVI-XVI of Figure 13 inner plate intercepted.

Figure 17 is the perspective view of the first outer plate of bicycle chain shown in FIG. 1.

Figure 18 is another perspective view of the first outer plate of bicycle chain shown in FIG. 1.

Figure 19 is the side elevation view of the first outer plate of bicycle chain shown in FIG. 1.

Figure 20 is the bottom view of the first outer plate of bicycle chain shown in FIG. 1.

Figure 21 is another side elevation view of the first outer plate of bicycle chain shown in FIG. 1.

Figure 22 is the perspective view of the second outer plate of bicycle chain shown in FIG. 1.

Figure 23 is another perspective view of the second outer plate of bicycle chain shown in FIG. 1.

Figure 24 is the side elevation view of the second outer plate of bicycle chain shown in FIG. 1.

Figure 25 is the bottom view of the second outer plate of bicycle chain shown in FIG. 1.

Figure 26 is another side elevation view of the second outer plate of bicycle chain shown in FIG. 1.

Figure 27 is the amplification side elevation view of the first outer plate of bicycle chain shown in FIG. 1.

Figure 28 is the amplification side elevation view of the second outer plate of bicycle chain shown in FIG. 1.

Figure 29 is the side elevation view of the first inner plate of bicycle chain shown in FIG. 1, wherein having sprocket wheel.

Figure 30 is the partial perspective view according to the bicycle chain of second embodiment.

Figure 31 is the partial plan layout of bicycle chain shown in Figure 30.

Figure 32 is the perspective view of the first inner plate of bicycle chain shown in Figure 31.

Figure 33 is another perspective view of the first inner plate of bicycle chain shown in Figure 31.

Figure 34 is the amplification side elevation view of the first inner plate of bicycle chain shown in Figure 31.

Figure 35 is the perspective view of the second inner plate of bicycle chain shown in Figure 31.

Figure 36 is another perspective view of the second inner plate of bicycle chain shown in Figure 31.

Figure 37 is the perspective view of the first outer plate of bicycle chain shown in Figure 31.

Figure 38 is another perspective view of the first outer plate of bicycle chain shown in Figure 31.

Figure 39 is the amplification side elevation view of the first outer plate of bicycle chain shown in Figure 31.

Figure 40 is the side elevation view of the first outer plate of bicycle chain shown in Figure 31.

Figure 41 is another amplification side elevation view of the first outer plate of bicycle chain shown in Figure 31.

Figure 42 is the top view of the first outer plate of bicycle chain shown in Figure 31.

Figure 43 is the perspective view of the second outer plate of bicycle chain shown in Figure 31.

Figure 44 is another perspective view of the second outer plate of bicycle chain shown in Figure 31.

Figure 45 is the partial plan layout according to the bicycle chain of third embodiment.

Figure 46 is the amplification side elevation view of the first inner plate of bicycle chain shown in Figure 45.

Figure 47 is the amplification side elevation view according to the first inner plate of the bicycle chain of the modification of third embodiment.

Figure 48 is the partial plan layout according to the bicycle chain of the 4th embodiment.

Figure 49 is the amplification side elevation view of the second inner plate of bicycle chain shown in Figure 48.

Specific embodiment

Embodiment is described with reference to the drawings, wherein similar appended drawing reference indicates corresponding or identical in the drawings Element.

First embodiment

Referring initially to Fig. 1, the bicycle 10 equipped with bicycle chain 12 according to first embodiment is shown.Voluntarily Vehicle 10 includes cycle frame B1, handlebar B2, saddle B3 and power train B4.Power train B4 is configured to turn the pedalling force of cyclist It is changed to driving force.Bicycle chain 12 is a part of power train B4.Power train B4 further includes crank component of bicycle B5, rear chain Take turns B6, front chain mover B7 and rear chiain-moving device B8.Crank component of bicycle B5 includes preceding sprocket wheel B51.Crank component of bicycle B5 encloses On the axis that center of rotation axis A1 is rotatably installed in cycle frame B1.Sprocket wheel B6 surrounds center of rotation axis A2 afterwards It is rotatably mounted to cycle frame B1.Bicycle chain 12 is arranged on preceding sprocket wheel B51 and rear sprocket wheel B6 so as to therebetween Extend.Front chain mover B7 and rear chiain-moving device B8 is configured and arranged to the transverse direction side by making bicycle chain 12 along bicycle 10 Change gear to gear shift.Preceding sprocket wheel B51 can also be referred to as bicycle chainwheel B51.Sprocket wheel B6 can also be referred to as voluntarily afterwards Blockchain wheel B6.

For example, in this application, following direction term "front", "rear", " forward ", " backward ", "left", "right", " transverse direction ", " upward " and " downward " and any other similar direction term refer to based on the saddle B3 for being sitting in bicycle 10 and towards Those of cyclist's determination of handlebar B2 direction.Therefore, these arts for being used to describe the bicycle 10 including bicycle chain 12 Language should be explained relative to the bicycle 10 used as shown in Figure 1, on a horizontal surface with upright riding position.These For describe bicycle chain 12 term should relative to as shown in Figure 1, be mounted on a horizontal surface uprightly to ride Line position sets the bicycle chain 12 of the bicycle 10 used to explain.

As shown in Figures 2 and 3, bicycle chain 12 includes the first inner plate 14, the second inner plate 16,18 and of the first outer plate Second outer plate 20.In this embodiment, bicycle chain 12 includes multiple first inner plates 14, multiple second inner plates 16, multiple first outer plates 18 and multiple second outer plates 20.However, the sum of the first inner plate 14, the second inner plate 16 The sum of sum, the sum of the first outer plate 18 and the second outer plate 20 is not limited to this embodiment.Bicycle chain 12 has Driving direction DD, bicycle chain 12 transmits pedalling force along driving direction DD during scrunching.

As shown in figure 3, the setting of the first inner plate 14 exists in the state that bicycle chain 12 is installed to cycle frame B1 Between cycle frame B1 and the second inner plate 16.That is, in the state that bicycle chain 12 is engaged with bicycle chainwheel B51, First inner plate 14 is arranged between cycle frame B1 and the second inner plate 16.Vehicle is installed in bicycle chain 12 In the state of frame B1, the first outer plate 18 is arranged between cycle frame B1 and the second outer plate 20.However, in bicycle chain Item 12 is installed in the state of cycle frame B1, and the second inner plate 16 can be set in cycle frame B1 and the first inner plate Between 14.In the state that bicycle chain 12 is installed to cycle frame B1, the second outer plate 20 is arranged in cycle frame Between B1 and the first outer plate 18.

As shown in figure 3, the first inner plate 14 is arranged first in first on the axial direction D1 of chain central axis CA11 Between outer plate 18 and the second inner plate 16.Second inner plate 16 is arranged in the first inner plate 14 and second on D1 in the axial direction Between outer plate 20.However, the second inner plate 16 can be arranged in axial direction D1 in the first outer plate 18 and the first inner plate Between 14.First inner plate 14 can be arranged between the second outer plate 20 and the second inner plate 16 in axial direction D1.

First inner plate 14 includes the first inner surface 14A and the first outer surface 14B.First inner surface 14A is towards in second Carrier bar 16.The first inner surface 14A is arranged in axial direction in the opposite side of D1 in first outer surface 14B.

Second inner plate 16 includes the second inner surface 16A and the second outer surface 16B.Second inner surface 16A is towards in first Carrier bar 14.The second inner surface 16A is arranged in axial direction in the opposite side of D1 in second outer surface 16B.

First outer plate 18 includes third inner surface 18A and third outer surface 18B.Third inner surface 18A is towards outside second Carrier bar 20.Third inner surface 18A is arranged in axial direction in the opposite side of D1 in third outer surface 18B.

Second outer plate 20 includes the 4th inner surface 20A and the 4th outer surface 20B.4th inner surface 20A is towards outside first Carrier bar 18.The 4th inner surface 20A is arranged in axial direction in the opposite side of D1 in 4th outer surface 20B.

Bicycle chain 12 further includes the first chain pin 22, the second chain pin 24, the first chain rolling ring 26 and the second chain rolling ring 28.Opposite a pair the first inner plate 14 and the second inner plate 16 can pivots around the first pivot axis P A1 using the first chain pin 22 It is connected to opposite a pair the first outer plate 18 and the second outer plate 20 with turning.Opposite a pair of of inner plate 14 and 16 utilizes second Chain pin 24 is pivotally coupled to another opposite a pair the first outer plate 18 and the second outer plate around the second pivot axis P A2 20.First chain pin 22 limits the first pivot axis P A1.Second chain pin 24 limits the second pivot axis P A2.First chain rolling ring 26 Opposite a pair of of inner plate 14 and 16 is rotatably mounted to around the first pivot axis P A1.Second chain rolling ring 28 is around the Two pivot axis P A2 are rotatably mounted to opposite a pair of of inner plate 14 and 16.

As shown in Fig. 2, bicycle chainwheel B51 includes multiple first tooth TH1 and multiple second tooth TH2.First tooth TH1 engagement In the interior chain space SP1 being arranged between the first inner plate 14 and the second inner plate 16.Second tooth TH2 is bonded on setting the In exterior chain space S P2 between one outer plate 18 and the second outer plate 20.

As shown in Fig. 4 to 8, the first inner plate 14 includes chain in link ends 32 and first in link ends 30, second in first Middle part 34.Link ends 30 include chain opening 36 in have chain central axis CA11 in first first in first.Chain in second End 32 includes chain opening 38 in have chain central axis CA12 in second second.Chain central axis CA12 is along in second Chain central axis CA11 extends in one.Chain central axis CA11 chain in first is vertical in chain central axis CA12 and first in second It is spaced apart on the D21 of direction.Chain middle part 34 interconnects link ends 32 in link ends 30 and second in first in first.Such as Shown in Fig. 3, the first chain pin 22 extends through chain opening 36 in first.Second chain pin 24 extends through chain opening 38 in second.The Link ends 30 are arranged in second on the downstream side of link ends 32 along driving direction DD in one.

As shown in figure 4, link ends 30 include that in axial direction D1 extends to support first from the first inner surface 14A in first First tubular portion 30A of chain rolling ring 26 (Fig. 3).Link ends 32 include from the first inner surface 14A in axial direction D1 in second Extend the second tubular portion 32A to support the second chain rolling ring 28 (Fig. 3).

As shown in fig. 6, the first tubular portion 30A is around chain in first in along first when chain central axis CA11 observation Opening 36.In along second when chain central axis CA12 observation, the second tubular portion 32A is around chain opening 38 in second.First Tubular portion 30A includes chain opening 36 in first.Second tubular portion 32A includes chain opening 38 in second.

As shown in fig. 7, limiting first from the first outer surface 14B to the first inner surface 14A relative to link ends 30 in first Axial thickness T 11.First axis thickness T11 is equal to or less than 0.9mm.It is highly preferred that first axis thickness T11 is equal to or less than 0.79mm.Chain middle part 34 includes recess portion 34A in first.Relative to chain middle part 34 in first from the first outer surface 14B to One inner surface 14A limits the second axial thickness T 12.Second axial thickness T 12 is less than first axis thickness T11.

As shown in Fig. 9 to Figure 13, the second inner plate 16 is including in link ends 42 and second in link ends the 40, the 4th in third Chain middle part 44.Link ends 40 include having in third chain opening 46 in the third of chain central axis CA13 in third.In 4th Link ends 42 include chain opening 48 in have chain central axis CA14 in the 4th the 4th.Chain central axis CA14 and in 4th Chain central axis CA13 chain longitudinal direction D22 along second is spaced apart in three.Chain middle part 44 makes link ends in third in second Link ends 42 interconnect in 40 and the 4th.

As shown in figure 3, chain central axis CA13 extends through chain opening 36 in first in third.Chain central axis in 4th CA14 extends through chain opening 38 in second.Chain central axis CA11 is substantially heavy in chain central axis CA13 and first in third It closes.Chain central axis CA12 is substantially overlapped in chain central axis CA14 and second in 4th.However, chain central axis in third CA13 can with first in chain central axis CA11 deviate.In 4th chain central axis CA14 can with second in chain central axis CA12 deviates.Link ends 40 are arranged in the 4th on the downstream side of link ends 42 along driving direction DD in third.

As shown in Figure 10, link ends 40 include that in axial direction D1 extends to support the from the second inner surface 16A in third The third tubular portion 40A of one chain rolling ring 26 (Fig. 3).In 4th link ends 42 include from the second inner surface 16A in axial direction D1 extends the 4th tubular portion 42A to support the second chain rolling ring 28 (Fig. 3).

As shown in figure 13, in along third when chain central axis CA13 observation, third tubular portion 40A is around chain in third Opening 46.In along the 4th when chain central axis CA14 observation, the 4th tubular portion 42A is around chain opening 48 in the 4th.Third Tubular portion 40A includes chain opening 46 in third.4th tubular portion 42A includes chain opening 48 in the 4th.

As shown in figure 12, third is limited from the second outer surface 16B to the second inner surface 16A relative to link ends 40 in third Axial thickness T 21.Chain middle part 44 includes recess portion 44A in second.Relative to chain middle part 44 in second from the second outer surface 16B The 4th axial thickness T 22 is limited to the second inner surface 16A.4th axial thickness T 22 is less than third axial thickness T 21.In the reality It applies in mode, third axial thickness T 21 is substantially equal to first axis thickness T11.However, third axial thickness T 21 can be with One axial thickness T 11 is different.

As shown in figure 14, chain middle part 34 limits in first in link ends 32 and first in link ends 30, second in first Chain neighboring 50.In first chain neighboring 50 include link ends edge 50A in first, in second link ends edge 50B and Chain middle edge is to 50C in first.Link ends edge 50A extends around link ends 30 in first in first.Link ends in second Edge 50B extends around link ends 32 in second.In first chain middle edge to 50C along chain middle part 34 in first first Extend between link ends edge 50B in interior link ends edge 50A and second.

As shown in figure 15, chain middle part 44 limits in second in link ends 42 and second in link ends the 40, the 4th in third Chain neighboring 52.In second chain neighboring 52 include link ends edge 52A in third, in the 4th link ends edge 52B and Chain middle edge is to 52C in second.Link ends edge 52A extends around link ends 40 in third in third.Link ends in 4th Edge 52B extends around link ends 42 in the 4th.In second chain middle edge to 52C along chain middle part 44 in second in third Extend between link ends edge 52B in interior link ends edge 52A and the 4th.

As shown in figure 14, in first on chain longitudinal direction D21 out of first the end of the chain in chain central axis CA11 to first Edge 50A in portion limits the first maximum distance MD11.In first on chain longitudinal direction D21 out of second chain central axis CA12 to Link ends edge 50B limits the second maximum distance MD12 in second.In this embodiment, the second maximum distance MD12 is substantially etc. In the first maximum distance MD11.However, the second maximum distance MD12 can be different from the first maximum distance MD11.

As shown in figure 15, chain longitudinal direction D22 link ends in chain central axis CA13 to third out of third along second Edge 52A limits third maximum distance MD13.From chain central axis CA14 in the 4th on chain longitudinal direction D22 in second Link ends edge 52B limits the 4th maximum distance MD14 in four.

As shown in Figure 14 and Figure 15, the first maximum distance MD11 is greater than third maximum distance MD13.Third maximum distance MD13 is less than the 4th maximum distance MD14.4th maximum distance MD14 be substantially equal to the first maximum distance MD11 and second it is maximum away from From MD12.However, the first maximum distance MD11 may be approximately equal to or be less than third maximum distance MD13.Third maximum distance MD13 may be approximately equal to or be greater than the 4th maximum distance MD14.4th maximum distance MD14 can be with the first maximum distance MD11 It is different at least one of the second maximum distance MD12.

As shown in figure 14, there is the first inner plate 14 the chain longitudinal direction D21 along first to be limited to link ends side in first The first maximum length ML11 in edge 50A and second between link ends edge 50B.As shown in figure 15, the second inner plate 16 has Chain longitudinal direction D22 is limited in third in link ends edge 52A and the 4th between link ends edge 52B second most along second Long length ML12.As shown in FIG. 14 and 15, the first maximum length ML11 is greater than the second maximum length ML12.However, first is maximum Length ML11 can be equal to or less than the second maximum length ML12.

As shown in figure 14, link ends edge 50A has first extended around chain central axis CA11 in first in first Chamfering 50A1, so that a part of the first chamfering 50A1 is arranged in the first circumferential zones AR11.First inner plate 14 includes the Chain longitudinal centre line CL11 in one.When the axial direction D1 observation of chain central axis CA11 along first, the first circumferential zones AR11 chain longitudinal centre line CL11 out of first is limited to the first reference line RL11.In first chain longitudinal centre line CL11 perpendicular to Chain central axis CA12 in chain central axis CA11 and second in first.First reference line RL11 chain central axis out of first CA11 extends radially outwardly.First circumferential zones AR11 is less than 14 degree.

When in axial direction D1 is observed, the first chamfering 50A1 is Chong Die with chain longitudinal centre line CL11 in first.First falls 50A1 chain middle edge out of first in angle extends in first in chain one in 50C around chain central axis CA11 in first Between edge to another in 50C.First chamfering 50A1 has the radial direction of the chain central axis CA11 in relative to first The the first radial width RW1 limited.When in axial direction D1 is observed, first radial width RW1 chain middle edge out of first To chain longitudinal centre line CL11 constant in a direction first in 50C.However, when in axial direction D1 is observed, the One radial width RW1 can out of first chain middle edge to chain longitudinal centre line CL11 in a direction first in 50C not It is constant.

Link ends 30 have the first minimum radial distance MR11 and the first maximum radial distance MR12 in first.First is minimum Radial distance MR11 the first vertical direction that chain central axis CA11 is vertical in chain longitudinal direction D21 and first in first The upper chain central axis CA11 out of first of D31 is limited to link ends edge 50A in first.First maximum radial distance MR12 is Chain central axis CA11 is limited to link ends edge 50A in first out of first on chain longitudinal direction D21 in one.First maximum diameter It is equal to or more than the first minimum radial distance MR11 to distance MR12.First minimum radial distance MR11 is equal to or more than 4.36mm.Preferably, the first maximum radial distance MR12 is 4.75mm.First maximum radial distance MR12 be equal to first it is maximum away from From MD11.However, between the first minimum radial distance MR11, the first maximum radial distance MR12 and the first maximum distance MD11 Size relationship is not limited to this embodiment.

As shown in figure 14, link ends edge 50B has second extended around chain central axis CA12 in second in second Chamfering 50B1, so that a part of the second chamfering 50B1 is arranged in the second circumferential zones AR12.When the chain central axis out of second When the axial direction D1 observation of line CA12, the second circumferential zones AR12 chain longitudinal centre line CL11 out of first is limited to from second The second reference line RL12 that interior chain central axis CA12 extends radially outwardly.Second circumferential zones AR12 is less than 14 degree.

When in axial direction D1 is observed, the second chamfering 50B1 is Chong Die with chain longitudinal centre line CL11 in first.Second falls 50B1 chain middle edge out of first in angle extends in first in chain one in 50C around chain central axis CA12 in second Between edge to another in 50C.Second chamfering 50B1 has the radial direction of the chain central axis CA12 in relative to second The the second radial width RW2 limited.When in axial direction D1 is observed, second radial width RW2 chain middle edge out of first To chain longitudinal centre line CL11 constant in a direction first in 50C.However, when from axial direction D1, the Two radial width RW2 can out of first chain middle edge to chain longitudinal centre line CL11 in a direction first in 50C not It is constant.

Link ends 32 have the second minimum radial distance MR21 and the second maximum radial distance MR22 in second.Second is minimum Radial distance MR21 the second vertical direction that chain central axis CA12 is vertical in chain longitudinal direction D21 and second in first The upper chain central axis CA12 out of second of D32 is limited to link ends edge 50B in second.Second vertical direction D32 is parallel to One vertical direction D31.However, the second vertical direction D32 can be angularly offset from the first vertical direction D31.

Chain central axis CA12 is limited second maximum radial distance MR22 out of second on chain longitudinal direction D21 in first Link ends edge 50B in second.Second maximum radial distance MR22 is equal to or more than the second minimum radial distance MR21.At this In embodiment, the second minimum radial distance MR21 is equal to or more than 4.36mm.Preferably, the second maximum radial distance MR22 is 4.75mm.Second maximum radial distance MR22 is equal to the second maximum distance MD12.However, the second minimum radial distance MR21, the Size relationship between two maximum radial distance MR22 and the second maximum distance MD12 is not limited to this embodiment.

As shown in figure 15, link ends edge 52A has the third extended around chain central axis CA13 in third in third Chamfering 52A1, so that a part of third chamfering 52A1 is arranged in third circumferential zones AR13.Second inner plate 16 includes the Chain longitudinal centre line CL12 in two.When the axial direction D1 observation of chain central axis CA13 along third, third circumferential zones AR13 chain longitudinal centre line CL12 out of second is limited to third reference line RL13.In second chain longitudinal centre line CL12 perpendicular to Chain central axis CA14 in chain central axis CA13 and the 4th in third.Third reference line RL13 chain central axis out of third CA13 extends radially outwardly.Third circumferential zones AR13 is less than 14 degree.

When in axial direction D1 is observed, third chamfering 52A1 is Chong Die with chain longitudinal centre line CL12 in second.Third is fallen 52A1 chain middle edge out of second in angle extends in second in chain one in 52C around chain central axis CA13 in third Between edge to another in 52C.Third chamfering 52A1 has along the radial direction relative to chain central axis CA13 in third The third radial width RW3 of restriction.When in axial direction D1 is observed, third radial width RW3 chain middle edge out of second To chain longitudinal centre line CL12 constant in a direction second in 52C.However, when from axial direction D1, the Three radial width RW3 can out of second chain middle edge to chain longitudinal centre line CL12 in a direction second in 52C not It is constant.

Link ends 40 have third minimum radial distance MR31 and third maximum radial distance MR32 in third.Third is minimum The radial distance MR31 third vertical direction that chain central axis CA13 is vertical in chain longitudinal direction D22 and third in second The upper chain central axis CA13 out of third of D33 is limited to link ends edge 52A in third.Third maximum radial distance MR32 is Chain central axis CA13 is limited to link ends edge 52A in third out of third on chain longitudinal direction D22 in two.Third maximum diameter It is equal to or more than third minimum radial distance MR31 to distance MR32.Third minimum radial distance MR31 is equal to or more than 4.36mm.Preferably, third maximum radial distance MR32 is 4.75mm.Third maximum radial distance MR32 be equal to third maximum away from From MD13.However, between third minimum radial distance MR31, third maximum radial distance MR32 and third maximum distance MD13 Size relationship is not limited to this embodiment.

As shown in figure 15, link ends edge 52B has the 4th extended around chain central axis CA14 in the 4th in the 4th Chamfering 52B1.4th chamfering 52B1 extends around chain central axis CA14 in the 4th, so that a part of 4th chamfering 52B1 is set It sets in the AR14 of fourth circumferential region.When the axial direction D1 observation of chain central axis CA14 along the 4th, fourth circumferential area AR14 chain longitudinal centre line CL12 out of second in domain is limited to the 4th reference line RL14.4th reference line RL14 is from the 4th in chain Mandrel line CA14 extends radially outwardly.Fourth circumferential region AR14 is less than 14 degree.

When observing on D1 in the axial direction, 4th chamfering 52B1 is Chong Die with chain longitudinal centre line CL12 in second.4th Chamfering 52B1 chain middle edge out of second extends to chain in second around chain central axis CA14 in the 4th to one in 52C Middle edge is to another in 52C.4th chamfering 52B1 has the radial direction side of the chain central axis CA14 in relative to the 4th To the 4th radial width RW4 of restriction.When in axial direction D1 is observed, the 4th radial width RW4 chain medial side out of second Edge increases chain longitudinal centre line CL12 in a direction second in 52C.However, the 4th is radial from axial direction D1 Width RW4 can out of second chain middle edge it is constant to chain longitudinal centre line CL12 in a direction second in 52C.

Link ends 42 have the 4th minimum radial distance MR41 and the 4th maximum radial distance MR42 in 4th.4th is minimum Radial distance MR41 the 4th vertical direction that chain central axis CA14 is vertical in chain longitudinal direction D22 and the 4th in second The upper chain central axis CA14 out of fourth of D34 is limited to link ends edge 52B in the 4th.4th vertical direction D34 is parallel to Three vertical direction D33.However, the 4th vertical direction D34 can be angularly offset from third vertical direction D33.

4th maximum radial distance MR42 is limited on chain longitudinal direction D22 from chain central axis CA14 in the 4th in second Link ends edge 52B in the 4th.4th maximum radial distance MR42 is equal to or more than the 4th minimum radial distance MR41.4th Minimum radial distance MR41 is equal to or more than 4.36mm.Preferably, the 4th maximum radial distance MR42 is 4.75mm.4th is maximum Radial distance MR42 is equal to the 4th maximum distance MD14.However, the 4th minimum radial distance MR41, the 4th maximum radial distance Size relationship between MR42 and the 4th maximum distance MD14 is not limited to this embodiment.

As shown in figs.10 and 15,4th chamfering 52B1 includes step part 54.Step part 54 is around chain center in the 4th Axis CA14 extends.Step part 54 includes first surface 54A and second surface 54B.First surface 54A and second surface 54B It is arranged in 4th chamfering 52B1.The second inner surface of second surface 54B and the second inner plate 16 is arranged in first surface 54A Between 16A.

As shown in figure 16, second surface 54B is tilted relative to first surface 54A and 4th chamfering 52B1.First surface 54A It is tilted with second surface 54B relative to the second inner surface 16A.First surface 54A and second surface 54B is set on D1 in the axial direction It sets between the second inner surface 16A and the second outer surface 16B.First surface 54A and second surface 54B are in 4th chamfering 52B1 Recess portion is set.

As shown in figure 14, the first chain rolling ring 26 includes the first outer radial periphery surface 26A and is arranged in the first outer radial periphery First radially inner peripheral surface 26B of the radially inner side of surface 26A.When the first chain rolling ring 26 in first chain longitudinal direction D21 Link ends 30 are mobile until the first radially inner peripheral surface 26B of the first chain rolling ring 26 contacts the first tubular portion in upper direction first When 30A, the first extended distance ED11 chain longitudinal direction D21 along first is limited to the edge and the first chain of the first chamfering 50A1 Between a part of first outer radial periphery surface 26A of rolling ring 26.The range of first extended distance ED11 be 0.95mm extremely 1.1mm。

As shown in figure 3, the first chamfering 50A1 is tilted, so that link ends 30 are in the second tooth in the first of the first inner plate 14 TH2 is suitable for the profile of the second tooth TH2 when being bonded in exterior chain space S P2.Second chamfering 50B1 inclination, so that chain in first Link ends 32 are suitable for the profile of the second tooth TH2 when the second tooth TH2 is bonded in exterior chain space S P2 in the second of plate 14.This Outside, since the first maximum distance MD11 is greater than third maximum distance MD13, it may make chain in the first of the first inner plate 14 End 30 is when the second tooth TH2 is bonded in exterior chain space S P2 more suitable for the profile of the second tooth TH2.Features described above improves Chain retention property between bicycle chainwheel B51 and bicycle chain 12.

As shown in Figure 17 to 21, the first outer plate 18 includes the first outer link ends 60, outside the second outer link ends 62 and first Chain middle part 64.First outer link ends 60 include the first exterior chain opening (the first exterior chain with the first exterior chain central axis CA21 Circular open) 66.Second outer link ends 62 include the second exterior chain opening (the second exterior chain with the second exterior chain central axis CA22 Circular open) 68.Second exterior chain central axis CA22 extends along the first exterior chain central axis CA21.In this embodiment, First exterior chain opening 66 is circular open, and the second exterior chain opening 68 is circular open.Therefore, the first exterior chain opening 66 can also To be referred to as the first exterior chain circular open 66.Second exterior chain opening 68 can also be referred to as the second exterior chain circular open 68.Second Exterior chain central axis CA22 is spaced apart on the first exterior chain longitudinal direction D41 with the first exterior chain central axis CA21.First exterior chain Middle part 64 interconnects the first outer link ends 60 and the second outer link ends 62.As shown in figure 3, the first chain pin 22 extends through First exterior chain opening 66.Second chain pin 24 extends through the second exterior chain opening 68.First outer link ends 60 are set along driving direction DD It sets on the upstream side of the second outer link ends 62.

As shown in Figure 22 to 26, the second outer plate 20 includes link ends 70 outside third, outside the 4th outer link ends 72 and second Chain middle part 74.The outer link ends 70 of third include having the third exterior chain opening 76 of third exterior chain central axis CA23.Outside 4th Link ends 72 include the 4th exterior chain opening 78 with the 4th exterior chain central axis CA24.4th exterior chain central axis CA24 and Three exterior chain central axis CA23 are spaced apart on the second exterior chain longitudinal direction D42.Second exterior chain middle part 74 is by the end of the chain outside third Portion 70 and the 4th outer link ends 72 interconnect.

As shown in figure 3, third exterior chain central axis CA23 extends through the first exterior chain opening 66.4th exterior chain central axis CA24 extends through the second exterior chain opening 68.Third exterior chain central axis CA23 and the first exterior chain central axis CA21 is substantially heavy It closes.4th exterior chain central axis CA24 is substantially overlapped with the second exterior chain central axis CA22.However, third exterior chain central axis CA23 can deviate with the first exterior chain central axis CA21.4th exterior chain central axis CA24 can be with the second exterior chain central axis CA22 deviates.The outer link ends 70 of third are along the upstream side that the 4th outer link ends 72 are arranged in driving direction DD.

As shown in figure 3, the second outer plate 20 includes extending from the second exterior chain middle part 74 towards the first exterior chain middle part 64 Protrusion 80.From the 4th inner surface 20A, in axial direction the first exterior chain middle part 64 of D1 direction extends protrusion 80.In first exterior chain Between portion 64 include in axial direction first exterior chain intermediate surface 64A of the D1 towards the second exterior chain middle part 74.Third inner surface 18A Including the first exterior chain intermediate surface 64A.Second exterior chain middle part 74 is including in axial direction D1 towards the first exterior chain middle part 64 The second exterior chain intermediate surface 74A.4th inner surface 20A includes the second exterior chain intermediate surface 74A.Protrusion 80 is from the second exterior chain Between surface 74A in axial direction D1 towards the first exterior chain intermediate surface 64A extend.

From the second exterior chain intermediate surface 74A, in axial direction the first outer plate 18 of D1 direction extends a projection amount to protrusion 80 AP1.Difference between first maximum distance MD11 and third maximum distance MD13 is less than the projection amount AP1 of protrusion 80.However, first Difference between maximum distance MD11 and third maximum distance MD13 can be equal to or more than the projection amount AP1 of protrusion 80.

As shown in figure 3, the first outer plate 18 does not have outside the first exterior chain middle part 64 in axial direction D1 direction second The protrusion that chain middle part 74 extends.However, the first outer plate 18 can include protrusion 80 as the second outer plate 20.

As shown in figure 3, out of first in first inner surface 14A to second of chain middle part 34 chain middle part 44 second in Surface 16A limits axial distance AD1.The range of axial distance AD1 is 2.1mm to 2.3mm.In this embodiment, it is axial away from It is 2.2mm from AD1.However, axial distance is not limited to this embodiment and above range.Axial distance AD1 is in first in chain Between portion 34 the first inner surface 14A and second in chain middle part 44 the second inner surface 16A between in the axial direction on D1 most Big axial distance.

As shown in figure 3, limiting additional axial distance from the third inner surface 18A of the first exterior chain middle part 64 to protrusion 80 AD2.Additional axial distance AD2 is D1 in the axial direction between the third inner surface 18A and protrusion 80 of the first exterior chain middle part 64 On maximum axial distance.Axial distance AD1 is less than additional axial distance AD2.

First tooth TH1 has the first axis width TH11 that in axial direction D1 is limited.Second tooth TH2 has along axial side The the second axial width TH21 limited to D1.First tooth TH1 and the second tooth TH2 are alternately arranged on driving direction DD.First axle It is less than the axial distance AD1 of interior chain space SP1 to width TH11.Second axial width TH21 is greater than the axial direction of interior chain space SP1 Distance AD1, and it is less than the additional axial distance AD2 of exterior chain space S P2.

As shown in figure 27, the first outer link ends 60, the second outer link ends 62 and the first exterior chain middle part 64 limit outside first Chain neighboring 82.First exterior chain neighboring 82 include the first exterior chain end edge 82A, the second exterior chain end edge 82B and First exterior chain middle edge is to 82C.First exterior chain end edge 82A extends around the first outer link ends 60.Second outer link ends Edge 82B extends around the second outer link ends 62.First exterior chain middle edge is to 82C along the first exterior chain middle part 64 first Extend between exterior chain end edge 82A and the second exterior chain end edge 82B.

First outer plate 18 includes perpendicular to the first exterior chain central axis CA21 and the second exterior chain central axis CA22 One exterior chain longitudinal centre line CL21.First exterior chain end edge 82A has the extended around the first exterior chain central axis CA21 One chamfering 82A1, so that a part of the first chamfering 82A1 is arranged in circumferential zones AR21, when in the first exterior chain central axis When observing on the axial direction D1 of CA21, circumferential zones AR21 is limited to from the first exterior chain longitudinal centre line CL21 from the first exterior chain The first reference line RL21 that central axis CA21 extends radially outwardly.Circumferential zones AR21 is less than 90 degree.In this embodiment, Circumferential zones AR21 is equal to or less than 45 degree.Circumferential zones AR21 is greater than 0 degree.However, circumferential zones AR21 is not limited to the implementation Mode.

First exterior chain end edge 82A has the first additional chamfering 82A2.First additional chamfering 82A2 is and the first chamfering 82A1 separated chamfering.First chamfering 82A1 includes the additional circumferential end 82A12 of the first circumferential end 82A11 and first.First Chamfering 82A1 crosses the first exterior chain longitudinal centre line CL21 from the first circumferential end 82A11 and extends to the first additional circumferential end 82A12.When in axial direction D1 is observed, the first exterior chain longitudinal centre line CL21 setting is in the first circumferential end 82A11 and the Between one additional circumferential end 82A12.

First chamfering 82A1, which has, is limited to the first circumferential end 82A11 and first around the first exterior chain central axis CA21 The first circumferential direction angle AG21 between additional circumferential end 82A12.First additional chamfering 82A2, which has, surrounds the first exterior chain central axis The first additional circumferential direction angle AG22 that line CA21 is limited between the opposite end of the first additional chamfering 82A2.First circumferential direction angle AG21 Circumferential direction angle AG22 additional greater than first.However, the first circumferential direction angle AG21 can be equal to or less than the first additional circumferential direction angle AG22.The The additional chamfering 82A2 of one chamfering 82A1 and first is arranged on the 18B of third outer surface.It can be from the first exterior chain end edge 82A Omit at least one of additional chamfering 82A2 of the first chamfering 82A1 and first.

Second exterior chain end edge 82B has the second chamfering 82B1 extended around the second exterior chain central axis CA22, makes The a part for obtaining the second chamfering 82B1 is arranged in circumferential zones AR22, in axial direction D1 observation, circumferential zones AR22 The second reference line to extend radially outwardly from the second exterior chain central axis CA22 is limited to from the first exterior chain longitudinal centre line CL21 RL22.Circumferential zones AR22 is less than 90 degree.In this embodiment, circumferential zones AR22 is equal to or less than 45 degree.Circumferential zones AR22 is greater than 0 degree.However, circumferential zones AR22 is not limited to this embodiment.

Second exterior chain end edge 82B has the second additional chamfering 82B2.Second additional chamfering 82B2 is and the second chamfering 82B1 separated chamfering.Second chamfering 82B1 includes the additional circumferential end 82B12 of the second circumferential end 82B11 and second.Second Chamfering 82B1 crosses the first exterior chain longitudinal centre line CL21 from the second circumferential end 82B11 and extends to the second additional circumferential end 82B12.When in axial direction D1 is observed, the first exterior chain longitudinal centre line CL21 setting is in the second circumferential end 82B11 and the Between two additional circumferential end 82B12.

Second chamfering 82B1, which has, is limited to the second circumferential end 82B11 and second around the second exterior chain central axis CA22 The second circumferential direction angle AG23 between additional circumferential end 82B12.Second additional chamfering 82B2, which has, surrounds the second exterior chain central axis The second additional circumferential direction angle AG24 that line CA22 is limited between the opposite end of the second additional chamfering 82B2.Second chamfering 82B1 and Second additional chamfering 82B2 is arranged on the 18B of third outer surface.The second chamfering can be omitted from the second exterior chain end edge 82B At least one of additional chamfering 82B2 of 82B1 and second.

As shown in figure 28, the outer link ends 70 of third, the 4th outer link ends 72 and the second exterior chain middle part 74 limit outside second Chain neighboring 84.Second exterior chain neighboring 84 include third exterior chain end edge 84A, the 4th exterior chain end edge 84B and Second exterior chain middle edge is to 84C.Third exterior chain end edge 84A extends around the outer link ends 70 of third.4th outer link ends Edge 84B extends around the 4th outer link ends 72.Second exterior chain middle edge is to 84C along the second exterior chain middle part 74 in third Extend between exterior chain end edge 84A and the 4th exterior chain end edge 84B.

Second outer plate 20 includes perpendicular to third exterior chain central axis CA23 and the 4th exterior chain central axis CA24 Two exterior chain longitudinal centre line CL22.Third exterior chain end edge 84A has the extended around third exterior chain central axis CA23 Three chamfering 84A1.There is third exterior chain end edge 84A third to add chamfering 84A2.Third, which adds chamfering 84A2, is fallen with third Angle 84A1 separated chamfering.Third chamfering 84A1, which has, is limited to third chamfering 84A1's around third exterior chain central axis CA23 Third circumferential direction angle AG31 between opposite end.Third, which adds chamfering 84A2, to be had around third exterior chain central axis CA23 restriction Third between the opposite end that third adds chamfering 84A2 adds circumferential direction angle AG32.It is attached that third circumferential direction angle AG31 is greater than third Add circumferential angle AG32.However, third circumferential direction angle AG31, which can be equal to or less than third, adds circumferential direction angle AG32.Third chamfering 84A1 Chamfering 84A2 is added with third to be arranged on the 4th outer surface 20B.Third can be omitted from third exterior chain end edge 84A to fall Angle 84A1 and third add at least one of chamfering 84A2.

4th exterior chain end edge 84B has the 4th chamfering 84B1 extended around the 4th exterior chain central axis CA24.The Four exterior chain end edge 84B have the 4th additional chamfering 84B2.4th additional chamfering 84B2 is separated with 4th chamfering 84B1 Chamfering.4th chamfering 84B1 has to be limited between the opposite end of 4th chamfering 84B1 around the 4th exterior chain central axis CA24 Fourth circumferential angle AG33.4th additional chamfering 84B2 have around the 4th exterior chain central axis CA24 be limited to the 4th it is additional fall The 4th additional circumferential direction angle AG34 between the opposite end of angle 84B2.Fourth circumferential angle AG33 is greater than the 4th additional circumferential angle AG34.However, fourth circumferential angle AG33 can be equal to or less than the 4th additional circumferential direction angle AG34.4th chamfering 84B1 and the 4th is attached Chamfering 84B2 is added to be arranged on the 4th outer surface 20B.Can from the 4th exterior chain end edge 84B omit 4th chamfering 84B1 and At least one of 4th additional chamfering 84B2.

As in figs. 27 and 28, the first circumferential direction angle AG21 is greater than third circumferential direction angle AG31, third adds circumferential direction angle AG32, the Four circumferential direction angle AG33 and the 4th add each of circumferential direction angle AG34.Second circumferential direction angle AG23 be greater than third circumferential direction angle AG31, Third adds circumferential direction angle AG32, fourth circumferential angle AG33 and the 4th and adds each of circumferential direction angle AG34.However, first is circumferential It is attached that angle AG21 can be equal to or less than third circumferential direction angle AG31, third additional circumferential direction angle AG32, fourth circumferential angle AG33 and the 4th Add at least one of circumferential angle AG34.It is additional that second circumferential direction angle AG23 can be equal to or less than third circumferential direction angle AG31, third Circumferential angle AG32, fourth circumferential angle AG33 and the 4th add at least one of circumferential direction angle AG34.

As shown in figure 29, in the state that bicycle chain 12 is engaged with preceding sprocket wheel B51, when in axial direction, D1 is observed When, link ends 30 are Chong Die with the second tooth TH2 of preceding sprocket wheel B51 in first, to provide overlapping region OA1.Overlapping region OA1 has Maximum circumferential lengths OA1A equal to or more than 0.45mm.Maximum circumferential lengths OA1A is equal to or less than 3mm.

In the state that bicycle chain 12 is engaged with sprocket wheel (for example, preceding sprocket wheel B51), when in axial direction, D1 is observed When, link ends 32 are Chong Die with the tooth TH1 of sprocket wheel (for example, preceding sprocket wheel B51) in second, to provide overlapping region OA2.Overlapping region OA2 has the maximum circumferential lengths OA2A equal to or more than 0.45mm.Maximum circumferential lengths OA2A is equal to or less than 3mm.

The maximum circumferential lengths OA2A of link ends 32 is big in the maximum circumferential lengths OA1A and second of link ends 30 in first It causes equal.However, in first link ends 30 maximum circumferential lengths OA1A can with second in link ends 32 maximum it is circumferential long It is different to spend OA2A.

Second embodiment

Referring to Figure 30 to Figure 44 description according to the bicycle chain 212 of second embodiment.In addition to the first inner plate 14, except the second inner plate 16, the first outer plate 18 and the second outer plate 20, bicycle chain 212 has and bicycle chain 12 identical structures.Therefore, with the element in first embodiment there is the element of roughly the same function will be numbered herein It is identical, and for simplicity, it will not be described in detail further herein and/or they be shown.

As shown in figs. 30 and 31, bicycle chain 212 includes the first inner plate 214, the second inner plate 216, the first exterior chain Plate 218 and the second outer plate 220.In this embodiment, bicycle chain 212 includes multiple first inner plates 214, Duo Ge Two inner plates 216, multiple first outer plates 218 and multiple second outer plates 220.However, the sum of the first inner plate 214, The sum of the sum of two inner plates 216, the sum of the first outer plate 218 and the second outer plate 220 is not limited to present embodiment.

As shown in Figure 32 and Figure 33, the first inner plate 214 has the first inner plate 14 substantially phase with first embodiment Same structure.As shown in figure 34, link ends edge 50A has first extended around chain central axis CA11 in first in first Chamfering 250A1, so that a part of the first chamfering 250A1 is arranged in the first circumferential zones AR11.First chamfering 250A1 has The first radial width RW21 that the radial direction of chain central axis CA11 limits in relative to first.When in axial direction, D1 is seen When examining, the first radial width RW21 out of first chain middle edge to chain longitudinal centre line in a direction first in 50C CL11 increases.

As shown in figs. 35 and 36, the second inner plate 216 has and 214 same structure of the first inner plate.Such as Figure 32 Shown, link ends edge 50B has the second chamfering 250B1 extended around chain central axis CA11 in first in second, so that A part of second chamfering 250B1 is arranged in the first circumferential zones AR11.Second chamfering 250B1 has in relative to second The second radial width RW22 that the radial direction of chain central axis CA12 limits.When in axial direction D1 is observed, the second chamfering 250B1 chain middle edge out of first increases chain longitudinal centre line CL11 in a direction first in 50C.

As shown in figs. 37 and 38, the first outer plate 218 has roughly the same with the first outer plate 18 of first embodiment Structure.First outer plate 218 does not have the protrusion 80 of first embodiment.First outer plate 218 includes the first outer link ends 260, the second outer link ends 262 and the first exterior chain middle part 264.First outer link ends 260 have the with first embodiment One outer 60 same structure of link ends.Second outer link ends 262 have the second outer link ends 62 with first embodiment Same structure.First exterior chain middle part 264 has roughly the same with the first exterior chain middle part 64 of first embodiment Structure.

As shown in figure 39, the first outer link ends 260, the second outer link ends 262 and the first exterior chain middle part 264 limit first Exterior chain neighboring 282.First exterior chain neighboring 282 includes the first exterior chain end edge 282A, the second exterior chain end edge 282B and the first exterior chain middle edge are to 282C.First exterior chain end edge 282A extends around the first outer link ends 260.Second Exterior chain end edge 282B extends around the second outer link ends 262.First exterior chain middle edge is to 282C along in the first exterior chain Between portion 264 extend between the first exterior chain end edge 282A and the second exterior chain end edge 282B.

First exterior chain end edge 282A, the second exterior chain end edge 282B and the first exterior chain middle edge are in 282C At least one is with chamfering.In this embodiment, the first exterior chain end edge 282A, which has, surrounds the first exterior chain central axis The first chamfering 82A1 that CA21 extends, so that a part of the first chamfering 82A1 is arranged in circumferential zones AR21, when first When observing on the axial direction D1 of exterior chain central axis CA21, circumferential zones AR21 is limited from the first exterior chain longitudinal centre line CL21 To the first reference line RL21.In this embodiment, the first additional chamfering 82A2 is omitted from the first exterior chain end edge 282A.

Second exterior chain end edge 282B has the second chamfering 82B1 extended around the second exterior chain central axis CA22, makes The a part for obtaining the second chamfering 82B1 is arranged in circumferential zones AR22, when in axial direction D1 is observed, circumferential zones AR22 The second reference line RL22 is limited to from the first exterior chain longitudinal centre line CL21.In this embodiment, from the second exterior chain end edge The second additional chamfering 82B2 is omitted in edge 282B.

As shown in figure 39, when along be parallel to the first exterior chain central axis CA21 axial direction D1 observation when, along perpendicular to The vertical direction D51 of first exterior chain longitudinal centre line CL21 is from the first exterior chain central axis CA21 to the first exterior chain end edge 282A limits the first radial distance MR221.Vertically D51 is in the first exterior chain middle edge to limiting most narrow spacing between 282C From MD221.200% of minimum range MD221 less than the first radial distance MR221.Minimum range MD221 is equal to or more than 5mm. Minimum range MD221 is equal to or less than 8mm.Minimum range MD221 is equal to or more than the 121% of the first radial distance MR221.Most Small distance MD221 is equal to or less than the 190% of the first radial distance MR221.In this embodiment, minimum range MD221 is The 142% of first radial distance MR221.However, minimum range MD221 is not limited to this embodiment and above range.

When observing on D1 in the axial direction, vertically D51 is from the second exterior chain central axis CA22 to the second exterior chain End edge 282B limits the first additional radial distance MR223.Minimum range MD221 radial distance MR223 additional less than first 200%.Minimum range MD221 is equal to or more than the 121% of the first additional radial distance MR223.Minimum range MD221 is equal to Or less than the 190% of the first additional radial distance MR223.In this embodiment, minimum range MD221 is first additional radial The 142% of distance MR223.However, minimum range MD221 is not limited to above range.

As shown in figure 40, the first exterior chain middle edge has the song equal to or more than 8.2mm at least one of 282C Rate radius CR21.Radius of curvature CR21 is equal to or less than 12mm.In this embodiment, radius of curvature CR21 is 11.8mm.So And radius of curvature CR21 is not limited to this embodiment and above range.

As shown in figure 39, the first exterior chain end edge 282A includes at least one first exterior chain straight flange edge 282A1 and extremely A few first exterior chain curved edges edge 282A2.Second exterior chain end edge 282B includes at least one second exterior chain straight edge Portion 282B1 and at least one second exterior chain curved edges edge 282B2.

As shown in figure 40, when being observed on D1 in the axial direction, at least one first exterior chain straight flange edge 282A1 and at least One the second exterior chain straight flange edge 282B1 and radius are equal to the first exterior chain middle edge to the curvature half of at least one of 282C The imaginary circle VC1 of diameter CR21 is tangent.First exterior chain longitudinal centre line CL21 by the first outer plate 218 be divided equally into the first side SD1 and Second side SD2 opposite relative to the first exterior chain longitudinal centre line CL21 with the first side SD1.When in axial direction D1 is observed, At least one second exterior chain straight flange edge of at least one the first exterior chain straight flange edge 282A1 and the first side SD1 of first side SD1 The the first exterior chain middle edge of 282B1 and radius equal to the first side SD1 is to the radius of curvature CR21's of at least one of 282C Imaginary circle VC1 is tangent.

As shown in figure 41, the first exterior chain middle part 264 has recess portion 264R.Recess portion 264R is arranged in third inner surface 18A On.When being observed on the axial direction D1 for being parallel to the first exterior chain central axis CA21, in the first exterior chain central axis CA21 The second radial distance MR222 is limited between the boundary of recess portion 264R.Second radial distance MR222 is greater than the first radial distance MR221.Second radial distance MR222 is greater than 4.2mm.Second radial distance MR222 is equal to or less than 4.75mm.In the embodiment party In formula, the second radial distance MR222 is 4.71mm.However, the second radial distance MR222 can be equal to or less than first it is radial away from From MR221.Second radial distance MR222 is not limited to this embodiment and above range.

When observing on D1 in the axial direction, the second additional radial distance MR224 is limited to the second exterior chain central axis Between CA22 and the boundary of recess portion 264R.Second additional radial distance MR224 is greater than the first additional radial distance MR223.Second Additional radial distance MR224 is greater than 4.2mm.Second additional radial distance MR224 is equal to or less than 4.75mm.Preferably In, the second additional radial distance MR224 is 4.71mm.However, the second additional radial distance MR224 can be equal to or less than first Additional radial distance MR223.Second additional radial distance MR224 is not limited to this embodiment and above range.

As shown in figure 42, the maximum axial width MAW1 of the first outer plate 218 is equal to or less than 1mm.First outer plate 218 Maximum axial width MAW1 be equal to or more than 0.7mm.In axial direction D1 is limited maximum axial width MAW1.In the embodiment party In formula, maximum axial width MAW1 is 0.81mm.However, maximum axial width MAW1 is not limited to this embodiment and above-mentioned model It encloses.

As shown in Figure 43 and 44, the second outer plate 220 has and 218 same structure of the first outer plate.Outside second Carrier bar 220 includes the outer link ends 270 of third, the 4th outer link ends 272 and the second exterior chain middle part 274.The outer link ends 270 of third With with the first outer 260 same structure of link ends.4th outer link ends 272 have with the second outer link ends 262 substantially Identical structure.Second exterior chain middle part 274 has and 264 same structure of the first exterior chain middle part.Therefore, for letter For the sake of clean, they are not detailed herein.

As shown in figure 31, the first chamfering 250A1 is tilted so that link ends 30 are in the second tooth in the first of the first inner plate 214 TH2 is suitable for the profile of the second tooth TH2 when being bonded in exterior chain space S P2.Second chamfering 250B1 is tilted so that the first inner plate Link ends 32 are suitable for the profile of the second tooth TH2 when the second tooth TH2 is bonded in exterior chain space S P2 in the second of 214.Third Chamfering 252A1 is tilted so that link ends 40 are bonded in exterior chain space S P2 in the second tooth TH2 in the third of the second inner plate 216 When be suitable for the profile of the second tooth TH2.4th chamfering 252B1 is tilted so that link ends 42 exist in the 4th of the second inner plate 216 the Second tooth TH2 is suitable for the profile of the second tooth TH2 when being bonded in exterior chain space S P2.Features described above improves bicycle chainwheel Chain retention property between B51 and bicycle chain 212.

Third embodiment

Referring to Figure 45 to Figure 47 description according to the bicycle chain 312 of third embodiment.In addition to the first inner plate Except 214, bicycle chain 312 has structure identical with bicycle chain 212.Therefore, have big with above embodiment It causes the element of identical function that will be numbered herein identical, and for simplicity, will not be described in detail further and/or show herein Out they.

As shown in figure 45, bicycle chain 312 includes the first inner plate 314, the second inner plate 216, the first outer plate 218 With the second outer plate 220.In this embodiment, bicycle chain 312 includes multiple first inner plates 314.However, in first The sum of carrier bar 314 is not limited to this embodiment.

As shown in figure 46, the first inner plate 314 has the knot roughly the same with the first inner plate 214 of second embodiment Structure.Link ends edge 50A has the first chamfering 50A1 extended around chain central axis CA11 in first in first, so that first A part of chamfering 50A1 is arranged in the first circumferential zones AR11.

As shown in figure 47, link ends 30 can partly have circular shape in first.In such an embodiment, There is link ends 30 the chain central axis CA11 out of first to be limited to the first radial distance of link ends edge 50A in first in one MR311.First radial distance MR311 is equal to or more than 4.36mm.

4th embodiment

Referring to Figure 48 and Figure 49 description according to the bicycle chain 412 of the 4th embodiment.In addition to the second inner plate Except 216, bicycle chain 412 has structure identical with bicycle chain 212.Therefore, have big with above embodiment Cause the element of identical function that will be numbered herein identical, and for simplicity, will not be described in detail further herein and/or They are shown.

As shown in figure 48, bicycle chain 412 includes the first inner plate 214, the second inner plate 416, the first outer plate 218 With the second outer plate 220.In this embodiment, bicycle chain 412 includes multiple second inner plates 416.However, in second The sum of carrier bar 416 is not limited to this embodiment.

As shown in figure 49, the first maximum distance MD11 is greater than third maximum distance MD13.Third maximum distance MD13 is less than 4th maximum distance MD14.4th maximum distance MD14 is substantially equal to the first maximum distance MD11 and the second maximum distance MD12. However, the first maximum distance MD11 may be approximately equal to or be less than third maximum distance MD13.Third maximum distance MD13 can be with Approximately equal to or greater than the 4th maximum distance MD14.4th maximum distance MD14 can be with the first maximum distance MD11 and second most At least one of distance MD12 difference greatly.

As used herein term " includes " and its derivative are intended to open-ended term, indicate the feature, The presence of component, assembly unit, group, entirety and/or step, but it is not excluded for feature, component, assembly unit, group that other do not state, whole The presence of body and/or step.This conception of species is also applied for the vocabulary of similar meaning, for example, term " having ", "comprising" and its group New word.

Term " component ", " section ", " portion ", " part ", " element ", " ontology " and " structure " can have when being used as odd number There is the double meaning of single part or multiple portions.

Such as ordinal number of " first " and " second " enumerated in the application is only mark, but does not have other meanings, for example, Particular order etc..In addition, for example, term " first element " does not imply that the presence of " second element ", and term " second in itself Element " does not imply that the presence of " first element " in itself.

Other than a pair of of element has the construction of mutually the same shape or structure, the term as used herein " a pair " can To include construction of a pair of of element with shape different from each other or structure.

Term "one", " one or more " and "at least one" may be used interchangeably herein.

Finally, it is as used herein such as " substantially ", the degree term of " about " and " close " mean modified art The reasonable departure of language, so that final result will not significantly change.All numerical value described in this application can be interpreted Including such as " substantially ", the term of " about " and " close ".

It is apparent that according to the above instruction, many variations and modifications can be made to the present invention.It is therefore to be understood that Within the scope of the appended claims, the present invention is implemented other than can specifically describing herein.

Claims

1. a kind of bicycle chain, the bicycle chain include:

First inner plate, first inner plate include:

Link ends in first, link ends include chain opening in first with chain central axis in first in described first；

Link ends in second, link ends include chain opening in second in described second, and chain opening has along described in described second Chain central axis in chain central axis extends in first second, chain center in chain central axis and described first in described second Axis is spaced apart in first on chain longitudinal direction；With

Chain middle part in first, chain middle part is mutual by link ends in link ends and described second in described first in described first Connection, link ends in described first, chain middle part defines chain periphery in first in link ends and described first in described second Edge, chain neighboring includes: in described first

The link ends edge in first that link ends in described first extend；

The link ends edge in second that link ends in described second extend；With

Chain middle edge pair in first, in described first chain middle edge to along described first chain middle part in described first Extend between link ends edge in link ends edge and described second；With

Second inner plate, second inner plate include:

Link ends in third, in the third link ends include in third chain be open, chain opening, which has, in the third extends through Cross chain central axis in the third that chain is open in described first；

Link ends in 4th, link ends include chain opening in the 4th in the described 4th, and chain opening, which has, in the described 4th extends through Chain central axis in the 4th of chain opening in described second is crossed, chain central axis and chain central axis in the third in the described 4th Line is spaced apart in second on chain longitudinal direction；With

Chain middle part in second, chain middle part is mutual by link ends in link ends in the third and the described 4th in described second Connection, link ends in the third, chain middle part defines chain periphery in second in link ends and described second in the described 4th Edge, chain neighboring includes: in described second

The link ends edge in the third that link ends in the third extend；

The link ends edge in the 4th that link ends in the described 4th extend；With

Chain middle edge pair in second, in described second chain middle edge to along described second chain middle part in the third Extend between link ends edge in link ends edge and the described 4th,

In described first on chain longitudinal direction from chain central axis in described first to described first in link ends it is edge limited First maximum distance,

Link ends are edge limited in chain central axis to the third out of described third on chain longitudinal direction in described second Third maximum distance,

It is edge limited from chain central axis in the described 4th to link ends in the described 4th on chain longitudinal direction in described second 4th maximum distance,

First maximum distance is greater than the third maximum distance, and

Link ends edge has the first chamfering that chain central axis extends in described first in described first, so that described the A part of one chamfering is arranged in the first circumferential zones, when from the axial direction of chain central axis in described first, First circumferential zones chain longitudinal centre line out of first is limited to the first reference line, and chain longitudinal centre line hangs down in described first The directly chain central axis in chain central axis and described second in described first, first reference line is from described first in chain Mandrel line extends radially outwardly, and first circumferential zones are less than 14 degree.

2. bicycle chain according to claim 1, wherein

When along axial direction observation, first chamfering and first Nei Lian longitudinal center line overlap.

3. bicycle chain according to claim 1, wherein

First chamfering from one of chain middle edge centering in described first in described first chain central axis extend to In described first the centering of chain middle edge another.

4. bicycle chain according to claim 1, wherein

In the state that the bicycle chain is installed to cycle frame, first inner plate is arranged in the vehicle Between frame and second inner plate.

5. bicycle chain according to claim 1, wherein

First inner plate includes

The first inner surface towards second inner plate, and

First inner surface is arranged in the opposite side on the axial direction in first outer surface, first outer surface, And

First axis thickness, institute are limited from first outer surface to first inner surface relative to link ends in described first First axis thickness is stated equal to or less than 0.9mm.

6. bicycle chain according to claim 1, wherein

Link ends have the first minimum radial distance and the first maximum radial distance in described first,

First minimum radial distance chain central axis upright in chain longitudinal direction and described first in described first It is limited to link ends edge in described first from chain central axis in described first in first vertical direction,

First maximum radial distance is limited in described first from chain central axis in described first on chain longitudinal direction Link ends edge in described first, and

First maximum radial distance is greater than first minimum radial distance.

7. bicycle chain according to claim 6, wherein

First minimum radial distance is equal to or more than 4.36mm.

8. bicycle chain according to claim 1, wherein

Link ends, which have from chain central axis in described first, in described first is limited to the of link ends edge in described first One radial distance, and

First radial distance is equal to or more than 4.36mm.

9. bicycle chain according to claim 1, wherein

The first radial width that there is first chamfering radial direction of the chain central axis in relative to described first to limit, With

When along axial direction observation, a court of first radial width from chain middle edge centering in described first Chain longitudinal centre line increases in described first.

10. bicycle chain according to claim 1, further includes

First chain rolling ring, the first chain rolling ring include the first outer radial periphery surface and are arranged in first outer radial periphery First radially inner peripheral surface of the radially inner side on surface, wherein

First inner plate includes

The first inner surface towards second inner plate, and

First inner surface is arranged in the opposite side on the axial direction in first outer surface, first outer surface,

Link ends include the first tubular portion in described first, and first tubular portion is from first inner surface along the axial direction side To extending to support the first chain rolling ring, in along described first when the observation of chain central axis, first tubular portion Chain is open in described first,

When chain longitudinal direction is moved until described towards link ends in described first along described first for the first chain rolling ring When first radially inner peripheral surface of first chain rolling ring contacts first tubular portion, the chain longitudinal direction along described first It is limited between a part on first outer radial periphery surface at the edge and the first chain rolling ring of first chamfering First extended distance, and

The range of first extended distance is 0.95mm to 1.1mm.

11. bicycle chain according to claim 1, wherein

Link ends edge has the 4th chamfering extended around chain central axis in the described 4th in described 4th, and

The 4th chamfering includes step part.

12. bicycle chain according to claim 1, wherein

In the state of the bicycle chain and sprocket engagement, when along axial direction observation, the end of the chain in described first Portion is Chong Die with the tooth of the sprocket wheel to provide overlapping region, and

The overlapping region has the maximum circumferential lengths equal to or more than 0.45mm.

13. bicycle chain according to claim 12, wherein

The maximum circumferential lengths are equal to or less than 3mm.

14. a kind of bicycle chain, the bicycle chain include:

First inner plate, first inner plate include:

The link ends edge in first that link ends in described first extend；

The link ends edge in second that link ends in described second extend；With

Second inner plate, second inner plate include:

The link ends edge in the third that link ends in the third extend；

The link ends edge in the 4th that link ends in the described 4th extend；With

First maximum distance is greater than the third maximum distance, and

In the state that the bicycle chain is installed to cycle frame, first inner plate is arranged in the vehicle Between frame and second inner plate；

First outer plate, first outer plate include:

First outer link ends, the first outer link ends include that the first exterior chain with the first exterior chain central axis is open；

Second outer link ends, the second outer link ends are open including the second exterior chain, and the second exterior chain opening has along described The second exterior chain central axis that first exterior chain central axis extends；With

First exterior chain middle part, the first exterior chain middle part are mutual by the described first outer link ends and the second outer link ends Connection；With

Second outer plate, second outer plate include:

The outer link ends of third, the outer link ends of the third include third exterior chain opening, and the third exterior chain opening, which has, to be extended through Cross the third exterior chain central axis of the first exterior chain opening；

4th outer link ends, the 4th outer link ends are open including the 4th exterior chain, and the 4th exterior chain opening, which has, to be extended through Cross the 4th exterior chain central axis of the second exterior chain opening；

Second exterior chain middle part, the second exterior chain middle part are mutual by link ends outside the third and the 4th outer link ends Connection；With

Protrusion, the protrusion extend from the second exterior chain middle part towards the first exterior chain middle part,

First inner plate is arranged in first outer plate and institute in described first on the axial direction of chain central axis It states between the second inner plate, and

Second inner plate is arranged between first inner plate and second outer plate on the axial direction.

15. bicycle chain according to claim 14, wherein

First outer plate do not have along the axial direction from the first exterior chain middle part towards second exterior chain in Between portion extend protrusion.

16. bicycle chain according to claim 14, wherein

The first exterior chain middle part includes among first exterior chain of the axial direction towards the second exterior chain middle part Surface,

The second exterior chain middle part includes among second exterior chain of the axial direction towards the first exterior chain middle part Surface, and

The protrusion extends along the axial direction from the second exterior chain intermediate surface towards the first exterior chain intermediate surface.

17. a kind of bicycle chain, the bicycle chain include:

First inner plate, first inner plate include:

Chain middle part in first, chain middle part is mutual by link ends in link ends and described second in described first in described first Connection；With

Second inner plate, second inner plate include:

Chain middle part in second, chain middle part is mutual by link ends in link ends in the third and the described 4th in described second Connection,

First inner plate includes

The first inner surface towards second inner plate, and

First outer surface, first outer surface are arranged in the opposite side of first inner surface in the axial direction, and

First axis thickness, institute are limited from first outer surface to first inner surface relative to link ends in described first First axis thickness is stated equal to or less than 0.79mm.

18. bicycle chain according to claim 17, wherein

Chain middle part includes recess portion in described first,

The second axial width is limited from first outer surface to first inner surface relative to chain middle part in described first, With

Second axial width is less than the first axis thickness.

19. a kind of bicycle chain, the bicycle chain include:

First inner plate, first inner plate include:

Second inner plate, second inner plate include:

First inner plate includes

The first inner surface towards second inner plate, and

The axial direction of the first inner surface chain central axis in described first is arranged in first outer surface, first outer surface In opposite side on direction,

Second inner plate includes

The second inner surface towards first inner plate, and

Second inner surface is arranged in the opposite side on the axial direction in second outer surface, second outer surface, With

Along the axial direction from chain middle part in described first to described second in chain middle part limit axial distance, the axis It is 2.1mm to 2.3mm to the range of distance.

20. bicycle chain according to claim 19, wherein

The axial distance is 2.2mm.