CN206309868U - Bicycle chain structure - Google Patents

Abstract

A kind of bicycle chain structure, it includes plural link units, and each link units sequentially concatenate combination.The chain is used to be engaged in a backgear group, and the chain can be shifted one's position between the different gears of the backgear group.Further, the link units include two link plates, two inner link plates and a pintles.The outer rim at the both ends of the two of which link plate is formed with the beveling construction of wide-angle.Such beveling construction can provide larger avoidance space to the gear of the backgear group, allow the chain to complete quickly and smoothly upper and lower chain action in the state of low interference.

Description

Bicycle chain structure

Technical field

The utility model particularly relates to the chain structure of bicycle on a kind of technical field of bicycle.

Background technology

One bicycle includes the drive system and other assemblies that the pedal force of cyclist can be converted into driving force.One chain Bar is some of the drive system, and the drive system is also comprising sprocket assemblies, a front chain mover after one group of front crankset, one And a rear chiain-moving device etc..Wherein the derailleur and being configured to can promote the chain to produce displacement in the horizontal direction of the bicycle And carry out gear shift.

Above-mentioned bicycle chain has to be sold by multiple interconnect in an alternating manner multiple inner links and multiple outer links. During promoting chain to produce lateral displacement, the outer links of chain tend to contact the surface of chain link sometimes.Therefore it is Solve the smooth degree of the upper and lower chain link of chain and reduce interference to produce, kickdown can be set on bicycle crank group surface recessed Portion or impression, or the structure of chain is improved.

The patent content of TaiWan, China I329716 patents and No. 324574 patent is all visible to chain structure Improvement.The outward surface pressure of the link plate that the chain structure of improvement is included in the link units sets indenture, and outer at this The end both sides of link plate form hypotenuse construction.The thickness of the link plate is so dropped using the impression, and utilizes the hypotenuse Construction is provided and avoids space, when making the link plate close to gear, the position of engagement (centers of link units) energy of chain Enough teeth portion closer to the gear, reach raising cochain effect.

However, the link plate surface makes indenture, undoubtedly increase by one procedure；In order to keep the link plate Structural strength, the mis-cut angle for causing the hypotenuse to construct is not enough so that avoid effect on driving birds is not good.Therefore for backgear group, Because of the spacing very little between gear and gear, the chain structure difficulty before the patent disclosed in case meets optimal use effect.

Utility model content

The purpose of this utility model is to provide a kind of bicycle chain structure, and it has and enables to chain in low interference State, it is quick and smoothly complete upper and lower chain action.

The purpose of this utility model is to provide a kind of bicycle chain structure, and it has can reduce torsion loss and carry The effect of height output torsion.

In order to achieve the above object with effect, the utility model provides a kind of bicycle chain structure, it is characterised in that by multiple Number link units concatenation, each link units are included：

Two link plates, parallel relative, respectively the two ends of the link plate are respectively an outside plate end, an outside plate connecting portion Two outside plate ends of connection, each outside plate end has a pin-and-hole；

One line of centres, is two circle center line connectings of the respectively pin-and-hole of the outside plate end；

Two RADIALs, positioned at the link plate, the center of circle and the vertical line of centres, Ling Yitong of the one by the pin-and-hole Cross the center of circle of another pin-and-hole and the vertical line of centres；

Two beveling constructions, are respectively formed at the outside plate end of the respectively link plate, and each beveling construction is all included Two oblique cutting parts, two oblique cutting parts are formed in the outer rim of the outside plate end opposite sides, and the two ends of each oblique cutting part are divided Not Wei Yu the RADIAL phase heteropleural；

Two inner link plates, between two link plates, respectively the two ends of the inner link plate are formed respectively for parallel and configuration One inner panel end, each inner panel end has an axis hole；

One pintle, its two ends are used to place relative pin-and-hole and the axis hole respectively so that the relative link plate And the inner link plate shape is into combination.

Further, the ora terminalis of the respectively outside plate end of the link plate each has a curved section, the camber line area The two ends of section connect beveling construction respectively, and the curved section is located between two relative oblique cutting parts.

Further, the curved section includes a leading edge camber line and two linking camber lines, two linking camber line difference The two ends of the leading edge camber line are formed in, two other ends of the linking camber line connect the oblique cutting part respectively.

Further, the leading edge camber line is connected the connecting point position of camber line with this for one first contact, the linking camber line with The connecting point position of the oblique cutting part is one second contact, and the circle center line connecting of first contact and the pin-and-hole is one first path length, and this Two point is one second path length with the circle center line connecting of the pin-and-hole, and first path length is more than second path length.

Further, an extension segmental arc is further included, the extension segmental arc is formed in the oblique cutting part of the link plate and is somebody's turn to do Between outside plate connecting portion, the extension segmental arc is that a convex arc section connects a concave-arc part, and one end of the wherein convex arc section connects the beveling Portion, the concave-arc part connects the outside plate connecting portion.

Further, two kinks are further included, two kinks are formed in the outside plate connection of the link plate Portion two ends, the kink connects the outside plate end, and the outer surface of the outside plate end is protruded in the outer surface of the connecting portion.

Chain structure disclosed in the utility model includes plural link units, and each link units sequentially concatenate combination, And the chain is engaged in a backgear group.Further, the link units include two link plates, two inner link plates and a chains Section pin.The outer rim at the both ends of the two of which link plate is formed with the beveling construction of wide-angle.Such beveling construction can Larger avoidance space is provided to the gear of the backgear group, allows the chain can be in the state of low interference, quickly and smoothly Complete upper and lower chain action.

Brief description of the drawings

Fig. 1 is applied to the structural representation exploded view of bicycle for the utility model.

Fig. 2 is outside drawing of the present utility model.

Fig. 3 is outside drawing of the utility model configuration in backgear group.

Fig. 4 is the outside drawing of the utility model link units.

Fig. 5 is the exploded view of the utility model link units.

Fig. 6 is the planar structure schematic diagram of the utility model link plate.

Fig. 7 is the structural representation of the utility model link plate one end.

Fig. 8 is the planar structure schematic diagram of the utility model link plate.

Fig. 9 is the cochain view one of the utility model chain.

Figure 10 is the cochain view two of the utility model chain.

Figure 11 is the link units of the utility model cochain state and the relative position schematic diagram of gear.

Reference

10：Bicycle；12：Chain；14：Drive system；16：Preceding crank gearing component；18：Sprocket assemblies afterwards；20：Preceding group Chain device；22：Rear chiain-moving device；24：Backgear group；26,：27：Gear；30：Link units；32：Link plate；34：Outside plate end； 36：Outside plate connecting portion；38：Pin-and-hole；40：Inner link plate；42：Inner panel end；44：Inner panel connecting portion；46：Axis hole；48：Chain link Pin；50：Line of centres；52：RADIAL；54：RADIAL；56：Beveling construction；58：Oblique cutting part；60：Oblique cutting part；62：Curved section； 64：Leading edge camber line；66：Linking camber line；68：First contact；70：Second contact；72：Extend segmental arc；74：Convex arc section；76：Concave arc Portion；78：Kink.

Specific embodiment

It is below, according to the purpose of this utility model and effect, hereby to enumerate preferred embodiment, and coordinate schema to describe in detail.

Fig. 1 is referred to, a kind of known bicycle 10 is disclosed in figure.The bicycle 10 is included can be by the pedal force of cyclist It is converted into the drive system 14 and other assemblies of driving force.One chain 12 is some of the drive system 14.In addition the drive Dynamic system 14 also comprising the toothed disc group having one before sprocket assemblies 18, a front chain mover 20 after crank gearing component 16, And a rear chiain-moving device 22.The two of which derailleur 20 and 22 may be used to stir the chain 12, and then enable the chain 12 at this The horizontal direction of bicycle 10 produces displacement, and converts the chain 12 in the position of backgear group 24 of the rear sprocket assemblies 18 or be somebody's turn to do The toothed disc position of preceding crank gearing component 16, and reach the purpose of gear shift.

Because the design of tradition or known patent can make during the chain 12 carries out gear shift, cause the chain 12 with should The fluted disc of sprocket assemblies 18 can produce interference afterwards, therefore the present embodiment proposes more preferably solution.

Fig. 2 is referred to, the chain 12 is formed by the concatenation of plural link units 30.And each link units 30 can connect into one Annular element.Fig. 3 is referred to, a part for the chain 12 may be used to around the home on a gear 26 of the backgear group 24, after this Gear train 24 belongs to a part for the foregoing rear sprocket assemblies 18 (see Fig. 1).

Fig. 4 is referred to, the link units 30 include two link plates, 32, two pintles 48 of inner link plate 40 and. Two link plates 32 are parallel relative, two inner link plates 40 are parallel relative and configuration two link plates 32 it Between.The two ends of the pintle 48 connect relative link plate 32 and the inner link plate 40 respectively.

Fig. 5 is referred to, the two ends of the link plate 32 are respectively an outside plate end 34, and an outside plate connecting portion 36 is used to connect Two outside plate ends 34.Secondly each outside plate end 34 has a pin-and-hole 38.The two ends of the inner link plate 40 are formed respectively One inner panel end 42.One inner panel connecting portion 44 is used to connect two inner panel ends 42.Each inner panel end 42 has an axle Hole 46.The link plate 32 is relative with the inner link plate 40 to make the pin-and-hole 38 be connected relatively with the axis hole 46, the pintle 48 End places and combines the relative pin-and-hole 38 and the axis hole 46.

Fig. 6 is referred to, a line of centres 50 is two the two of the outside plate end 34 pin-and-holes 38 of the link plate 32 Circle center line connecting.Two RADIALs 52 and 54 are located at the link plate 32, one RADIAL 52 by the center of circle of the pin-and-hole 38 and The vertical line of centres 50, the center of circle and the vertical line of centres 50 of another RADIAL 54 by another pin-and-hole 38.

Two beveling constructions 56 are respectively formed at two outer rims of the outside plate end 34 of the respectively link plate 32.Enter one Step, two beveling constructions 56 all include two oblique cutting parts 58 and 60.Two oblique cutting parts 58 and 60 are formed in the outside plate end The outer rim of 34 opposite sides.It is worth noting that, the oblique cutting part 58 and 60 has larger beveling length and beveling depth (more Near the pin-and-hole), cause the two ends of the oblique cutting part 58 and 60 respectively positioned at the phase heteropleural of the RADIAL 52 and 54 accordingly.

Secondly, the ora terminalis of the outside plate end 34 each has a curved section 62.The two ends connection of the curved section 62 should Beveling construction 56.Further, the curved section 62 is located between relative two oblique cutting parts 58 and 60, and the curved section 62 Two ends connect the oblique cutting part 58 and 60 respectively.

Fig. 7 is referred to, the curved section 62 includes a leading edge camber line 64 and two linking camber lines 66.Two linking camber lines 66 two ends for being respectively formed at the leading edge camber line 64, two other ends of the linking camber line 66 connect the He of oblique cutting part 58 respectively 60.The connecting point position that wherein the leading edge camber line 64 is connected camber line 66 with this is one first contact 68, and the linking camber line 66 is oblique with this The connecting point position in portion 58 and 60 is cut for one second contact 70, first contact 68 is one first footpath with the circle center line connecting of the pin-and-hole 38 (R1), second contact 70 and the circle center line connecting of the pin-and-hole 38 are one second footpath (R2), and the length in first footpath (R1) is more than should The length in the second footpath (R2).By the reduction of the length in second footpath (R2) so that (second connects for one end of the linking camber line 66 Point) closer to the center of circle of the pin-and-hole 38, in turn resulting in the oblique cutting part 58 and 60 can have bigger mis-cut angle；In other words, originally The design of embodiment is for pristine outside profile (shown in dotted line), it is possible to provide bigger resection, and can provide more Big avoidance angle.Additionally, the Curvature change of the linking camber line 66, makes second contact 70 where the end of oblique cutting part 58 and 60 Stress be able to appropriate reduction.

The present embodiment also extends segmental arc 72 comprising one again.The extension segmental arc 72 is formed in the oblique cutting part of the link plate 32 58th, between 60 and the outside plate connecting portion 36.The extension segmental arc 72 is that a convex arc section 74 connects a concave-arc part 76, the wherein convex arc section 74 one end connects the oblique cutting part 58 and 60, and the concave-arc part 76 connects the outside plate connecting portion 36.The convex arc of the extension segmental arc 72 Portion 74 connects the shape design of the concave-arc part 76, helps to reduce the oblique cutting part 58,60 and the outside plate connecting portion 36 and adjacent structure Stress between making.

Fig. 5, Fig. 8 are referred to, the link plate 32 of the present embodiment further includes two kinks 78.Two kinks 78 The two ends of the outside plate connecting portion 36 of the link plate 32 are formed in, the kink 78 connects the outside plate end 34, thereby caused Protrude the outer surface of the outside plate end 34 in the outer surface of the outside plate connecting portion 36.

Because the design of the present embodiment reduces the area of the outside plate end 34, and one end of the oblique cutting part 58 and 60 more connects The nearly pin-and-hole 38, therefore it is the adjustment of base material and appropriate heat treatment parameter of arranging in pairs or groups that the link plate 32 can use medium carbon steel, is made The structural strength for obtaining the link plate 32 is sufficient for being formed the demand of the oblique cutting part 58 and 60.In addition the design of the kink 78 Can improve the tensile resistance of the link plate 32, thus with 32 ancestrals of the link plate disclosed in the present embodiment into chain 12 have applicable structural strength.

Fig. 9, Figure 10 are referred to, when chain 12 is shifted gears in different gears 26,27, for example, is changed to by less gear 26 Larger gear 27, during cochain, the chain 12 is stirred and is close to larger gear 27, and the chain 12 is to incline Oblique form is close to the gear 27, and being now placed in the link plate 32 of side can first reach the larger gear 27.In cochain During, due to treat cochain the link units 30 can closer to the gear wheel 27, so the teeth portion of the gear wheel 27 with Part chain 12 of cochain is completed, more consistent direction can be kept.In other words, the teeth portion of the gear wheel 27 can be more accurate The center for being engaged on each link units 30.

Figure 11 is referred to, because the chain 12 is presented shape of kicking up, so the oblique cutting part 60 that the link plate 32 possesses To should gear 27 teeth portion when, the oblique cutting part 60 can not be produced with the teeth portion of the gear 27 and contacted.

In accordance with the above, the chain 12 has bigger displacement space, then the chain of arranging in pairs or groups with respect to the surface of the gear 26 12 angle of kicking up, the chain 12 can smoothly complete cochain action in the state of low interference.Similarly, it is also possible to low dry Lower chain is completed in the state of relating to dynamic.

In addition in cochain process, although the chain 12 can be formed because cochain is acted it is crooked tighten shape, but by the tooth Wheel 26 can more accurately be engaged on the effect of the center of each link units 30, so the chain 12 is relative with the gear 26 Angle can diminish, consequently, it is possible to the crooked degree reduction of the chain 12, the degree of tautness reduction of the chain 12, activity raising, therefore The chain 12 can more rapidly and smoothly complete cochain action.

It is the particularly player with for user, the cochain of low interference and lower chain are acted, and more rapidly more suitable Smooth upper and lower chain action, representing the torsion that user stepped on produced by pedal can be exported under the conditions of smaller loss, Thereby reach the effect of bigger power output.

Above-described embodiment is only illustrative technology of the present utility model and its effect, new not for this practicality is limited Type.It is any it is ripe can be in the case of without prejudice to know-why of the present utility model and spirit, to above-mentioned in technique personage Embodiment is modified and is changed, therefore rights protection scope of the present utility model answers claim institute as described later Row.

Claims (6)

1. a kind of bicycle chain structure, it is characterised in that concatenated by plural link units, each link units are included：

Two link plates, parallel relative, respectively the two ends of the link plate are respectively an outside plate end, outside plate connecting portion connection Two outside plate ends, each outside plate end has a pin-and-hole；

One line of centres, is two circle center line connectings of the respectively pin-and-hole of the outside plate end；

Two RADIALs, positioned at the link plate, the center of circle and the vertical line of centres of the one by the pin-and-hole are another by another The center of circle of one pin-and-hole and the vertical line of centres；

Two beveling constructions, are respectively formed at the outside plate end of the respectively link plate, and each beveling construction all includes two Oblique cutting part, two oblique cutting parts are formed in the outer rim of the outside plate end opposite sides, and position is distinguished at the two ends of each oblique cutting part In the phase heteropleural of the RADIAL；

Two inner link plates, between two link plates, respectively the two ends of the inner link plate are formed in one respectively for parallel and configuration Plate end, each inner panel end has an axis hole；

One pintle, its two ends are used to place relative pin-and-hole and the axis hole respectively so that the relative link plate and should Inner link plate shape is into combination.

2. bicycle chain structure as claimed in claim 1, it is characterised in that the end of the respectively outside plate end of the link plate The two ends that edge each has a curved section, the curved section connect beveling construction respectively, and the curved section is located at relative Between two oblique cutting parts.

3. bicycle chain structure as claimed in claim 2, it is characterised in that the curved section includes a leading edge camber line and two Bar is connected camber line, and two linking camber lines are respectively formed at the two ends of the leading edge camber line, two other ends of the linking camber line point The oblique cutting part is not connected.

4. bicycle chain structure as claimed in claim 3, it is characterised in that the leading edge camber line is connected the contact of camber line with this Position is one first contact, and the linking camber line is one second contact, first contact and the pin with the connecting point position of the oblique cutting part The circle center line connecting in hole is one first path length, and second contact is one second path length, first path length with the circle center line connecting of the pin-and-hole More than second path length.

5. bicycle chain structure as claimed in claim 1, it is characterised in that further include an extension segmental arc, the extension segmental arc It is formed between the oblique cutting part of the link plate and the outside plate connecting portion, the extension segmental arc is that a convex arc section connects a concave arc The one end in portion, the wherein convex arc section connects the oblique cutting part, and the concave-arc part connects the outside plate connecting portion.

6. bicycle chain structure as claimed in claim 1, it is characterised in that further include two kinks, two bendings Portion is formed in the outside plate connecting portion two ends of the link plate, and the kink connects the outside plate end, and the connecting portion appearance Protrude the outer surface of the outside plate end in face.