CN100548790C - Low outline rear derailleur - Google Patents
Low outline rear derailleur Download PDFInfo
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- CN100548790C CN100548790C CNB2006101625227A CN200610162522A CN100548790C CN 100548790 C CN100548790 C CN 100548790C CN B2006101625227 A CNB2006101625227 A CN B2006101625227A CN 200610162522 A CN200610162522 A CN 200610162522A CN 100548790 C CN100548790 C CN 100548790C
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Abstract
Bicycle derailleur comprises: base component; Movable link; Link component, its be connected between base component and the movable link in case make movable link with respect to base component along sideway movement; And extended element, it has movable link coupled position that is connected in movable link and the leading sheave coupled position of setovering forward from this movable link coupled position.Leading sheave is attached to extended element so that around the leading sheave rotational at leading sheave coupled position place, and tension pulley block is attached to movable link, is positioned at the leading sheave below.Leading sheave and tension pulley block are not to be connected directly to same member.
Description
The cross reference of related application
The application is the common pending application No.11/307 that submitted on February 28th, 2006,941 part continuation application.
Technical field
The present invention relates to bicycle, relate in particular to the low outline rear derailleur that is used for conversion chain between a plurality of sprocket wheels that rotate together along with trailing wheel.
Background technology
Bicycle derailleur is used to make chain to engage with one of a plurality of sprocket wheels that rotate along with bicycle rear selectively.Typical case's rear derailleur comprise base component, supporting the movable link of fairleader and be connected in base component and movable link between so that fairleader with respect to the connecting rod mechanism of base component conversion chain and between a plurality of sprocket wheels along sideway movement.Connecting rod mechanism comprises and a pair ofly is connected to base component and is connected to movable link and forms the link component of parallelogram, and base component is installed on the rear end of cycle frame by hold-down bolt, and this hold-down bolt is screwed into the tapped bore that is formed in the vehicle frame.Usually the biasing member that is form of springs is installed in the connecting rod mechanism so that movable link inwardly or along side direction is outwards setovered along side direction with respect to base component.Biasing member generally includes and is installed between base component and the movable link and is clipped in coil spring between the pair of links member.
Because the characteristic of the sideway movement of conversion chain desired fairleader between a plurality of sprocket wheels, connecting rod mechanism. movable link and fairleader be all along the protruding cooresponding distance of side direction, when chain especially true when being positioned at outermost back sprocket engagement.Accompanying between the double-type link component under the helical spring situation, the putting spring because described link component is necessary spaced-apart is so just further increased this consequence.Therefore, fairleader easily is impacted or easy and near object tangle up, and is especially true when cross-country riding in the mountain region.This consequence increases along with sprocket wheel quantity and becomes more serious, thereby has increased the lateral distance that fairleader must be advanced.
Since chain must long enough in case simultaneously with the forward and backward sprocket engagement of maximum, so when chain with forward and backward sprocket wheel combined engagement except that maximum forward and backward sprocket wheel and when not needing the total length of chain, some mechanism must be set to strain the relaxation cases in the chain.Fairleader is usually designed to and is used for this purpose.More specifically, fairleader generally includes leading sheave and is installed on the tension pulley block of this leading sheave below, and fairleader is biased along clockwise direction.Leading sheave makes chain sprocket wheel after move to another back sprocket wheel, and the biasing of the cw of fairleader makes tension pulley block pulling chain become snakelike, thus when not needing the total length of chain the relaxation cases in the tension chain.Yet, when simultaneously being different from simultaneously with the required chain length of the forward and backward sprocket engagement of minimum greatly with the required chain length of the forward and backward sprocket engagement of maximum, distance between leading sheave and the tension pulley block also must be bigger, so that tension pulley block can all be enough to spur chain in both cases with the tension flaccid part.Unfortunately, tension pulley block is far away more apart from leading sheave, and tension pulley block is face closely just.So just increased that fairleader is clashed into or with near the risk of object tangle up.
Summary of the invention
The various features that the objective of the invention is to bicycle derailleur.In one embodiment, bicycle derailleur comprises: base component; Movable link; Link component is connected between base component and the movable link so that make this movable link move along side direction (laterally) with respect to this base component; And extended element, it has movable link coupled position that is connected in movable link and the leading sheave coupled position of setovering forward from this movable link coupled position.Leading sheave is attached to extended element so that around the leading sheave rotational at leading sheave coupled position place, and tension pulley block is positioned at the leading sheave below, is attached to this movable link.Leading sheave and tension pulley block are not to be connected directly to same member.
In another embodiment, bicycle derailleur comprises: base component; Movable link; And link component, be connected between base component and the movable link so that movable link with respect to base component along sideway movement.Link component rotates with respect to base component around first axle, and link component rotates with respect to movable link around second axis.Biasing member is connected into and makes movable link setover along side direction with respect to base component.When observing perpendicular at least one axis in the first axle or second axis, biasing member remains in the outer fix of the outer surface of link component, and when observing perpendicular at least one axis in the first axle or second axis, at least a portion of link component and biasing member is overlapping.
Will know other inventive features by reading following description, these features can be separately or are combined the basis that forms as other invention that claim and equivalents thereof limited with above feature.
Description of drawings
Fig. 1 is the side direction external view that is in the specific embodiment of the rear derailleur in the high speed position;
Fig. 2 is for dialling the side direction interior views of chain device;
Fig. 3 is the birds-eye view of dialling the chain device that is in the high speed position;
Fig. 4 is the backplan of dialling the chain device that is in the high speed position;
Fig. 5 is the front elevation of dialling the chain device that is in the high speed position;
Fig. 6 is the back view of dialling the chain device that is in the high speed position;
Fig. 7 is the lateral plan of dialling the chain device that is in the low-speed position;
Fig. 8 is the birds-eye view of dialling the chain device that is in the low-speed position;
Fig. 9 is the backplan of dialling the chain device that is in the low-speed position;
Figure 10 is the front elevation of dialling the chain device that is in the low-speed position;
Figure 11 is the back view of dialling the chain device that is in the low-speed position;
Figure 12 is the side direction external view that is attached to the rear derailleur on the conventional vehicle frame;
Figure 13 is the side direction external view of another embodiment of rear derailleur, and wherein rear derailleur is in the position that makes chain and minimum back sprocket engagement, and at this moment front chain shifter makes chain and minimum preceding sprocket engagement;
Figure 14 is for dialling the side direction interior views of chain device;
Figure 15 is the back view of dialling the chain device that is in the position that makes chain and minimum back sprocket engagement;
Figure 16 is the view of dialling the chain device that is parallel to the pivot axis of connecting rod mechanism;
Figure 17 is the view of dialling the chain device perpendicular to the pivot axis of connecting rod mechanism;
Figure 18 A-18C is detailed external view, interior views and the cutaway view of end that is positioned at the link component at movable link place;
Figure 19 is the cutaway view at movable link and leading sheave place;
Figure 20 is the oblique drawing of pivot shown in Figure 19;
Figure 21 is the side direction external view of rear derailleur, and wherein rear derailleur is in the position that makes chain and maximum back sprocket engagement, and at this moment front chain shifter makes chain and minimum preceding sprocket engagement;
Figure 22 is for dialling the back view of chain device, and wherein rear derailleur is in the position that makes chain and maximum back sprocket engagement, and at this moment front chain shifter makes chain and minimum preceding sprocket engagement; And
Figure 23 is the side direction external view of rear derailleur, and wherein rear derailleur is in the position that makes chain and maximum back sprocket engagement, and at this moment front chain shifter makes chain and maximum preceding sprocket engagement.
The specific embodiment
Fig. 1-11 dials each view of the specific embodiment of chain device 10 for being in low profile in each position.For example, Fig. 1 is the side direction external view of rear derailleur 10, and Fig. 2 is for dialling the back view of chain device 10.As shown in Figure 1, rear derailleur 10 is attached on the rear portion of cycle frame 14, so that guiding chain 18 in a plurality of back sprocket wheel R1-R8, these backs sprocket wheel R1-R8 is around rear vehicle shaft 22 coaxial rotation that are supported on the vehicle frame 14, and its axis 22 defines rotational axis x.
See the most clearly in Fig. 1 and 3, regulating control is installed hub 99 and is stretched out along side direction then backward from hub 86 is installed.The side direction outside that regulating control is installed hub 99 comprises the regulating control mounting structure that is tapped bore 100 forms, and the size of this tapped bore 100 is suitable for being threadably engaged the regulating control that is set screw 101 forms.The top of set screw 101 only is against on the positioning support 66 on the vehicle frame end 34.Therefore, the rotation direction position between vehicle frame end 34 and the base component 70 just can be adjusted by rotating set screw 101 simply.
The housing coupler 102 that is the hollow cylinder form places the top of transition portion 94, and wherein the size of housing coupler 102 is suitable for being attached to and ending on the shell 106 of Bowden (bowden) type cable 110 according to known way.Housing coupler 102 is oriented to be positioned at the rotational axis x rear, more especially, is positioned at the rear of frame end 34 and is positioned at the side direction inboard of the installation surface 90 of base component 70 at least in part, as shown in Figure 3.Housing coupler 102 comprises shell containing hole 104, and this shell containing hole 104 has with respect to following pulley plane P bevelled axially bored line B.If desired, cable can be regulated the bolt (not shown) and be installed in the shell containing hole 104 so that place between housing coupler 102 and the shell 106, principle and structure that this cable is regulated bolt are well-known.
As shown in figs. 1 and 2, connecting rod coupling part 98 comprises abutment wall 114, outside connecting rod mounting ear 118 and inboard connecting rod mounting ear 122.In this embodiment, inboard connecting rod mounting ear 122 forms the extension of transition portion 94, it in the past backward, slope inwardly along side direction from the top down, abutment wall 114 stretches out from installed inside ear 122 along side direction so that from the top down, recede to lateral outer end from transition portion 94, and outside connecting rod mounting ear 118 extends downwards so that in the past backward, slope inwardly along side direction from the top down from abutment wall 114.
Similarly, the connecting rod coupling part 98 of base component 70 is straddling first end of lower link 166, and pivotally connects thereon by the pivot 178 that defines pivot axis P3.Actuator arm 175 extends internally downwards and along side direction from first end of lower link 166, so that be consistent with the slope profile that outer surface by these sprocket wheels R1-R8 forms basically.The cable attachment structures that is bolt 176 and clamping washer 177 forms is provided on the outer end of actuator arm 175 so that the interior cable 108 of attached Bowden type cable 106, as shown in Figure 2.As shown in Figure 3, when fairleader 78 was positioned at the outermost lateral position, bolt 176 and packing ring 177 placed installation surface 90 inboards of base component 70.
As shown in Figure 2, the leg 179 and 180 of lower link 166 is putting spiral retracing spring 181 betwixt.One end of spring 181 is installed on the base component 70 at pivot 170 places, and the other end of spring 181 is connected on the movable link 74 at pivot 182 places.Therefore, spring 181 makes movable link 74 outwards setover along side direction.
Fairleader 78 comprises leads chain connecting rod 194, is rotatably installed on by pivot 200 and leads first on the chain connecting rod 194 or go up leading sheave 198, lead chain connecting rod 202 and be rotatably installed on down by pivot 208 and lead second on chain connecting rod 202 or time tension pulley block 206 down.On lead chain connecting rod 194 and can pivotally be connected in by pivot 210 and lead on the chain connecting rod installation frame 158.On lead chain connecting rod 194 and comprise that chain promotes member 214 and chain condition unit 218.Chain promotion member 214 places leads between chain connecting rod installation frame 158 and the leading sheave 198, and arch section 222 is placed near the tooth on the leading sheave 198.When with chain 18 from being converted to than large diameter sprocket than the minor diameter sprocket wheel and preventing chain 18 when leading sheave 198 comes off, chain promotes member 214 and is used to promote chain 18.Chain promotes member 214 and promotes the member pivot axis around the chain that is limited by pivot 210, this axis in the present embodiment with the first pulley axis bias of pivot 200 qualifications.Therefore, leading sheave 198 and chain promote member 214 and all promote the member pivot axis around the chain that is limited by pivot 210.
As shown in Figure 2, the upper end 205 of leading down chain connecting rod 202 can pivotally be connected on the main body 130 of movable link 74 and comprise a plurality of for example three spring attachment openings 242 by pivot 238.The other end of above-mentioned spring 138 inserts in one of spring attachment openings 242 so that set the required bias force of leading chain connecting rod 202 down.Therefore, lead chain connecting rod 202 cw biasing in Fig. 1 down.The lower end 207 of leading chain connecting rod 202 down tension pulley block 206 and is supporting chain condition unit 248 un-rotatably by pivot 208 rotatably supports.In this embodiment, as shown in Figure 4, upper end 205 is vertically stretched basically and is inwardly setovered along side direction with respect to lower end 207, and also vertically stretch basically this lower end 207.About chain condition unit 248, chain condition unit 248 comprises inner panel 252, outside plate 256 and regulator pin 260.The radial inner end of inner panel 252 is connected on the pivot 208, and the radial outer end of inner panel 252 is anchored on the end of regulator pin 260.In this embodiment, outside plate 256 forms down a part of leading chain connecting rod 202 and is supporting pivot 208.The radial outer end of outside plate 256 is anchored on the other end of regulator pin 260.Inner panel 252 helps chain 18 is being prevented that chain 18 from coming off from tension pulley block 206 when being converted to than the minor diameter sprocket wheel than large diameter sprocket, and outside plate 256 helps chain 18 is being prevented that chain 18 from coming off from tension pulley block 206 when being converted to than large diameter sprocket than the minor diameter sprocket wheel.Regulator pin 260 helps to prevent that chain 18 from the excessive radial motion taking place.Chain condition unit 248 can save in certain embodiments.
In this embodiment, the size of base component 70, movable link 74, fairleader 78 and connecting rod mechanism 82 makes when fairleader 78 places the outermost lateral position, and leading sheave 198 is in about 220 ° extremely in about 270 ° scope with respect to rotational axis x.
As shown in Figure 4, leading sheave 198 has leading sheave 198 binary pulley plane P.In this embodiment, when observing perpendicular to pivot 200, each tooth on the leading sheave 198 is symmetry and being centered on the pulley all, so pulley plane P is positioned at the center of leading sheave 198, and all pulley teeth all are arranged in pulley plane P.In this embodiment, pulley plane P also halves tension pulley block 206.In order to provide the side direction of reduction to outline for group chain device 10, each parts are constructed such that at least one in pulley plane P and boxed rod 162 or the lower link 166 intersects when proper fairleader 78 is placed on the position in outermost somewhere between dead position and interior side direction position (for example outermost lateral position shown in Fig. 4).
Use in this article then, speech " intersects " and is always the common meaning with one or more common points.Therefore, this term also comprises for example tangent relation.The outermost lateral position can be when dialling chain device 10 by the outermost lateral position when bicycle takes off.In this case, the outermost lateral position can be in position static and that only be subjected under the situation of bias force of retracing spring 181 and determine dialling the chain device by fairleader 78, and interior side direction position is determined by the position of fairleader 78 when fairleader 78 is manually pulled on its interior side direction position.Alternatively, the outermost lateral position can be determined by the position of fairleader 78 when it is configured to align with sprocket wheel R1 behind the minimum diameter, and interior side direction position can be determined by the position of fairleader 78 when it is configured to align with sprocket wheel R8 behind the maximum gauge.The speech that uses " between " comprise the meaning in being included in.
In addition, in this embodiment, when being placed in outermost at fairleader 78 under the situation of (for example outermost lateral position shown in Fig. 6) on the position in somewhere between dead position and the interior side direction position, when passing the parts measurement of all connections, at least one among pulley plane P and pivot axis P1 or the pivot axis P3 intersects.For example, pivot 170 defines pivot axis P1 and boxed rod 162 is attached to base component 70.Expose at outside connecting rod installation component 118 places on the top, lateral of pivot 170, and in the blind hole (not shown) in the interior side direction top of the pivot 170 insertion inside connecting rod installation component 122, does not expose at inside connecting rod installation component 122 places on therefore interior side direction top.Therefore the length of passing the pivot axis P1 that the parts of all connections measure extend to the interior side direction surface of the inside connecting rod installation component 122 at pivot axis P1 place from the top, lateral of the pivot 170 of pivot axis P1.Similarly, pivot 178 defines pivot axis P3 and lower link 166 is attached to base component 70.Expose at outside connecting rod installation component 118 places on the top, lateral of pivot 178, and in the blind hole (not shown) in the interior side direction top of the pivot 178 insertion inside connecting rod installation component 122, does not expose at inside connecting rod installation component 122 places on therefore interior side direction top.Therefore the length of passing the pivot axis P3 that the parts of all connections measure extend to the interior side direction surface of the inside connecting rod installation component 122 at pivot axis P3 place from the top, lateral of the pivot 178 of pivot axis P3.
In this embodiment, be placed in when fairleader 78 on the position in somewhere between outermost lateral position and the interior side direction position, in the time of for example on the outermost lateral position shown in Fig. 4, pulley plane P both intersected with boxed rod 162 and lower link 166, intersected with pivot axis P1 and P3 again.Yet, might not need to intersect with all above-mentioned parts at all lateral position places that are in fairleader 78.For example, at least one axis in pivot axis P1-P4 places the side direction inboard of pulley plane P, and when at least one axis among the pivot axis P1-P4 places the side direction outside of pulley plane P, in this embodiment, the second pivot axis P2 that measures according to above definition is just placed on the side direction outside of pulley plane P (and movable link plane M) position as shown in Figure 3 fully.In this embodiment, pulley plane P and crossing in any space S between the surface (for example surface shown in Fig. 2 261 and 262) in opposite directions 1 of boxed rod 162 and lower link 166, as shown in Figure 4.Be placed in when fairleader 78 on the position in somewhere between outermost lateral position and the interior side direction position, in the time of for example on the outermost lateral position shown in Fig. 3, pulley plane P also intersects with base component 70.
(for clarity sake removed spring 181) in addition as shown in Figure 4, the inner surface 264 that is arranged essentially parallel to the movable link plane M of pulley plane P and movable link 74 intersects.In this embodiment, inner surface 264 and movable link plane M coplane, but also can adopt other configuration, because movable link 74 can have many different shapes.When fairleader 78 is placed on the position in somewhere between outermost lateral position and the interior side direction position, movable link plane M both intersects with boxed rod 162 and lower link 166, pivot axis P1 and P3, again and the space S between the surface in opposite directions 1 of boxed rod 162 and lower link 166 intersect.In addition, be placed in when fairleader 78 on the position in somewhere between outermost lateral position and the interior side direction position, in the time of for example on the outermost lateral position shown in Fig. 4, the space S between the surface in opposite directions 1 of at least a portion of the space S 2 between movable link plane M and the pulley plane P and boxed rod 162 and lower link 166 intersects.
As shown in Fig. 3 and 8, dial chain device 10 and have very low lateral profile.For example, when fairleader 78 was positioned on the outermost lateral position shown in Fig. 3, relevant parts were just along extending laterally to vehicle frame 14 outsides.The part of actuator arm 175 and connecting rod mechanism 82 places the side direction inboard of pulley plane P and movable link plane M and meets the diagonal line outline line of sprocket wheel R1-R8, thereby has formed very compact design.When fairleader 78 is positioned on the side direction position shown in Fig. 8, hub 58 is installed for dialling the side direction outermost portions of chain device 10.In fact, hub 58 even do not stretch out chain stay 26 or the side direction of seat stay 30 outside is installed.On this position, actuator arm 175 and connecting rod mechanism 82 also meet the diagonal line outline line of sprocket wheel R1-R8.
Group chain device of prior art can not have this low profile.Reason is that the chain that the fairleader in the chain device has dialled of prior art promotes member and the inner panel that extends to down tension pulley block from last leading sheave as integrally formed, and this inner panel has limited the ability that fairleader outwards moves along side direction.In embodiment disclosed herein, the size that chain promotes member 214 is adapted such that the ability that can not hinder fairleader 78 outwards to move along side direction.Two block structures of fairleader 78 also are convenient to this sideway movement.In addition, the size of dialling base component in the chain device and connecting rod mechanism of prior art be adapted to be mounted to trailing wheel rotational axis x below basically or even its place ahead, and this guarantees that with regard to requiring enough lateral spacings connecting rod mechanism can not clash into sprocket wheel during operation.Because in embodiment disclosed herein, the size of base component 70, boxed rod 162, lower link 166, movable link 74 and fairleader 78 makes, when fairleader 78 is placed on the outermost lateral position, leading sheave 198 with respect to rotational axis x be in about 220 ° to about 270 ° scope, so the required lateral distance of parts further reduces, because connecting rod mechanism can more closely meet the outline line that the outer surface by these sprocket wheels R1-R8 forms.Certainly, although many significantly reduction group chain device profiles that all help in the feature described herein do not need all features, decide according to using.
Figure 12 is the outer side view of the rear derailleur 10 on the vehicle frame end 300 that is installed on conventional type vehicle frame 14 '.In this case, vehicle frame end 300 comprises front portion 304 and rear portion 308, its middle front part 304 extends to the level attitude that aligns with rotational axis x from chain stay 26 and seat stay 30, and rear portion 308 from the level attitude that aligns with rotational axis x backward and perpendicular extend downwards.Joint between front portion 304 and the rear portion 308 has formed axle and has put groove 312, and this size that puts groove 312 is suitable for putting therein rear axle 22.In this embodiment, axle puts groove 312 and also is in the orientation that bevelled is vertical substantially a little and defines open end 316 and closed end 320, and wherein open end 316 places closed end 320 belows.Rear portion 308 has formed the annular that has the opening (not shown) hub 324 has been installed, and the size of this opening is suitable for putting therein hold-down bolt 328.
Figure 13 be mounted to conventional vehicle frame 14 ' vehicle frame end 300 rear derailleur 10 ' the side direction external view of another embodiment, Figure 14 for dial chain device 10 ' the side direction interior views, Figure 15 for dial chain device 10 ' be in make chain 18 with minimum after sprocket wheel R1 engage the position time back view.Vehicle frame end 300 have with Figure 12 in vehicle frame end 300 identical construction, and components identical is represented with identical Reference numeral.
Regulating control is installed hub 499 and is stretched out along side direction then backward from hub 486 is installed.Regulating control is installed hub 499 and is comprised the regulating control mounting structure that is the tapped bore form, and this screw thread hole size is suitable for being threadably engaged the regulating control that is set screw 501 forms.The top of set screw 501 only is against on the positioning support 454 on the adapter 430.Therefore, the turned position between adapter 430 and the base component 470 just can be adjusted by rotating set screw 501 simply.
The housing coupler 502 that is the hollow cylinder form places the top of transition portion 494, and wherein the size of housing coupler 502 is suitable for being attached to and ending at the shell 506 (Figure 15) of Bowden type cable 510.Housing coupler 502 is oriented to be positioned at the rotational axis x rear, more especially, is positioned at the rear of adapter 430 and is positioned at the side direction inboard of the installation surface 490 of base component 470 at least in part.In this embodiment, housing coupler 502 places the side direction inside edge of the transition portion 494 of base component 470, as shown in figure 15.Housing coupler 502 comprises shell containing hole 503 (Figure 15 and Figure 16), this shell containing hole 503 have as among first embodiment with respect to pulley plane P bevelled axially bored line B.If desired, cable can be regulated the bolt (not shown) is installed in the shell containing hole 503 so that place between housing coupler 502 and the shell 506.
Connecting rod mechanism 482 comprises a pair of link component that is lower link 566 forms in outer boxed rod 562 of side and the side.First end of boxed rod 562 is a fork-shaped so that straddling the connecting rod coupling part 498 of base component 470, and connects thereon pivotly by the pivot 570 that defines pivot axis P1.Second end of boxed rod 562 is that fork-shaped is installed hub 550 so that straddling the boxed rod of the connecting rod installation frame 534 of movable link 474, and connects thereon pivotly by the pivot 574 that defines pivot axis P2.In this embodiment, the distance between the outermost edge of first end of the boxed rod 562 at base component 470 places is greater than the distance between the outermost edge of second end of the boxed rod 562 at movable link 474 places.Actuator arm 575 stretches out downwards and along side direction from first end of boxed rod 562, extends out to connecting rod coupling part 498 positions in the middle near base component 470 along side direction subsequently.The cable attachment structures that is bolt 576 and clamping washer 577 forms is provided on the outer end of actuator arm 575 so that the interior cable 508 of attached Bowden type cable 510, as shown in figure 15.When fairleader 478 was positioned at the outermost lateral position, bolt 576 and packing ring 577 placed the installation surface 490 side direction inboards of base component 470.
First end of lower link 566 is a fork-shaped so that straddling the connecting rod coupling part 498 of base component 470, and pivotally connects thereon by the pivot 578 that defines pivot axis P3.Second end of lower link 566 forms tubular hub 587 is installed, and this installation hub 587 is installed hub 554 by the lower link of the connecting rod installation frame 534 of movable link 474 and straddled, and pivotally connects thereon by the pivot 582 that defines pivot axis P4.Because this set structure is so the distance between the outermost edge of first end of the lower link 566 at base component 470 places is greater than the distance between the outermost edge of second end of the lower link 566 at movable link 474 places.
Outer boundary set screw 586 (Figure 15) and interior boundary set screw 590 are installed on the transition portion 494 of base component 470 and the boundary between the connecting rod coupling part 498, so as respectively the outermost of regulating movable link 474 according to well-known mode to interior side direction position.
Shown in Figure 18 A, the leg 579 of boxed rod 562 and 580 forms the spring charge/discharge channel 583 that is form of cut or cuts, to put the biasing member of coil spring 581 forms therein.One end of spring 581 is attached to base component 470 at the primary importance place by pivot 570 expressions.As shown in figure 17, the other end of spring 581 is connected to movable link 474 at second place place, and this second place is by representing with the spring erection column 591 of pivot 582 connecting rod installation frames 534 coaxial, that be attached to movable link 474.Figure 14 has saved spring 581 so that clearly show that spring erection column 591.Because this structure, so spring 581 makes movable link 74 outwards setover along side direction.In this embodiment, spring 581 is around axle of spring S (Figure 16) coiling, and this axle of spring S extends along the direction that is substantially perpendicular among the pivot P1-P4 at least one.
Shown in Figure 18 A, spring 581 remains in pivot 570 places.As shown in figure 17, when observing perpendicular to pivot axis P1-P4, spring 581 remains in spring erection column 591 places in outer surface 595 outsides of outer surface 593 outsides of boxed rod 562 and lower link 566.In the present embodiment, pivot axis P1-P4 is parallel to each other.In addition, when observing perpendicular at least one among the pivot axis P1-P4, boxed rod 562 and lower link 566 are respectively overlapping with at least a portion of spring 581.In the present embodiment, when observing perpendicular at least one among the pivot axis P1-P4, boxed rod 562 and lower link 566 both all and the overlapping so that part of spring 581 of at least a portion of spring 581 be clipped between boxed rod 562 and the lower link 566.
In order to reduce the spacing between boxed rod 562 and the lower link 566, the spring charge/discharge channel 596 of curved form of grooves (Figure 18 B and 18C) is formed at the inside face 600 of the boxed rod 562 of the connecting rod 566 that faces down.The spring charge/discharge channel 598 (Figure 16) of another curved form of grooves is formed at towards the inside face 602 of the lower link 566 of boxed rod 562, so that groove leaves the lateral inclination side 604 of lower link 566.For thickness and the intensity that keeps lower link 566, the outside face of lower link 566 608 forms the convex opposite with spring charge/discharge channel 598 and swells 612.In the present embodiment, the spring charge/ discharge channel 596 and 598 the degree of depth change so that adapt to spring 581 with respect to boxed rod 562 and lower link 566 inclined orientation.Pass under the situation of corresponding external peripheral surface 593 and 595 spring charge/ discharge channel 596 and 598 degree of depth maximum at spring 581.
See most clearly in Figure 16, fairleader 478 comprises: extended element, and it presents the form of leading chain connecting rod 694; Last leading sheave 698, it is installed on by pivot 700 at leading sheave coupled position place and leads chain connecting rod 694 so that rotate around leading sheave axis G; The pulley connecting rod, it is the form of leading chain connecting rod 702 down; And following tension pulley block 706, it leads chain connecting rod 702 under tension pulley block coupled position place is rotatably installed on by pivot 708.As shown in figure 19, pivot 712 is installed in the main body 530 of movable link 474 of spring 538 radially inner sides.As shown in Figure 19 and 20, pivot 712 comprises the scalariform Cylinder shape constructional element, and it has: smaller diameter portion 716 is press-fit in the axle mounting hub 720 in the main body 530; A pair of than major diameter part 722 and 724, around it tubulose bearing 728 is installed; Major diameter spacer flanger 732; And less fixed diameter hub 736, it is represented the movable link coupled position with the extended element axis E and has a pair of opposed rotation- prevention plane 740 and 744 and axle mounting opening 746.
On lead chain connecting rod 694 and be tabular component, this tabular component has: pivot opening 762, it is used to install an end of pivot 700; The first rotation-prevention opening 766, it has the rotation-prevention plane 770 and 774 that rotation-prevention plane 740 and 744 a pair of and on the pivot 712 engages; And the second rotation-prevention opening 778.Rotation-prevention bolt 782 extends through the second rotation-prevention opening 778 and is screwed in the tapped bore 786 in the extended element installation frame 558.Therefore, on lead chain connecting rod 694 and be installed on un-rotatably on the extended element installation frame 558, and leading sheave axis G is fixed into from the extended element axis E and setovers forward.
Chain condition unit 818 also is mounted to leads chain connecting rod 694.In the present embodiment, chain condition unit 818 comprises outside plate 826, inner panel 830 and regulator board 834.Outside plate 826 and chain promote member 790 as integrally formed (for example: single-piece) and promote member 790 from this chain and extend radially outward.Inner panel 830 comprises: pivot opening 838, and it is used to install the other end of pivot 700; And installation shaft opening 842, its be used for installing the axle mounting opening 746 that is press-fit into pivot 712 thereby with an end of the coaxial installation shaft 846 of extended element axis E.Tubular axle sleeve 850 is installed so that keep suitable spacing between described two parts last leading between chain connecting rod 694 and the inner panel 830 around installation shaft 846.Regulator board 834 and inner panel 830 as integrally formed (for example: single-piece), and its from inner panel 830 towards outside plate 826 along extending laterally.Outside plate 826 helps chain 18 is being prevented that chain 18 from coming off from leading sheave 698 when being converted to than the minor diameter sprocket wheel than large diameter sprocket, and inner panel 830 helps chain 18 is being prevented that chain 18 from coming off from leading sheave 698 when being converted to than large diameter sprocket than the minor diameter sprocket wheel.Regulator board 834 helps to prevent that chain 18 from the excessive radial motion taking place.Yet chain condition unit 818 can save in certain embodiments.
Shown in Figure 14,17 and 19, the upper end 854 of leading chain connecting rod 702 down comprises opening 858 (Figure 19), bearing 728 and pivot 712 pass this opening in case make lead down chain connecting rod 702 with respect to movable link 474 and on lead chain connecting rod 694 and be supported, thereby can be at movable link coupled position place around the pulley connecting rod axis L rotation coaxial with the extended element axis E.The upper end 854 also comprises spring construction opening 862, the other end of spring 538 insert in this spring attachment openings 862 in case make lead down chain connecting rod 702 with respect to movable link 474 along cw setover (Fig. 1).The rotation stop pin 866 that extends towards movable link 474 is mounted to down leads chain connecting rod 702 so that contact with movable link 474, thereby the initial position of chain connecting rod 702 time is led in setting.
Shown in Figure 14 and 16, lead the lower end 870 of chain connecting rod 702 down and supporting tension pulley block 706 by pivot 708, and supporting chain condition unit 878 un-rotatably so that rotate around tension pulley block axis T.In this embodiment, upper end 854 is vertically stretched basically and outwards is offset along side direction with respect to lower end 870, and also vertically stretch basically this lower end 870.Chain condition unit 878 comprises inner panel 882, outside plate 886 and regulator pin 892.The radial inner end of inner panel 882 is connected on the pivot 708, and the radial outer end of inner panel 882 is anchored on the end of regulator pin 892.In this embodiment, outside plate 886 forms down a part of leading chain connecting rod 702 and is supporting pivot 708.The radial outer end of outside plate 886 is anchored on the other end of regulator pin 892.Inner panel 882 helps chain 18 is being prevented that chain 18 from coming off from tension pulley block 706 when being converted to than the minor diameter sprocket wheel than large diameter sprocket, and outside plate 886 helps chain 18 is being prevented that chain 18 from coming off from tension pulley block 706 when being converted to than large diameter sprocket than the minor diameter sprocket wheel.Regulator pin 892 helps to prevent that chain 18 from the excessive radial motion taking place.Chain condition unit 878 can save in certain embodiments.
Be different from first embodiment, the size of base component 470, movable link 474, fairleader 478 and connecting rod mechanism 482 is adapted such that the leading sheave coupled position is offset forward from the movable link coupled position at anchor hub 736 places of pivot 712.Even when applying biasing, during as the biasing backward that causes by chain 18 usually, also be like this to leading sheave 698.The distance that this increases between leading sheave 698 and the tension pulley block 706, allow like this tension pulley block in the position that does not need tension pulley block 706 more flaccid part in the tension chain 18 under the situation of face closely.
As first embodiment, leading sheave 698 has leading sheave 698 binary pulley plane P (Figure 15).When observing perpendicular to pivot 700, each tooth on the leading sheave 698 is symmetry and being centered on the pulley all, so pulley plane P is positioned at the center of leading sheave 698, and all pulley teeth all are arranged in pulley plane P.In this embodiment, pulley plane P also halves tension pulley block 706.In order to provide the side direction of reduction to outline for group chain device 10 ', each parts are constructed such that at least one in pulley plane P and boxed rod 562 or the lower link 566 intersects when proper fairleader 478 is placed on the position in outermost somewhere between dead position and interior side direction position (for example outermost lateral position shown in Figure 15).
As first embodiment, when go up the position (for example outermost lateral position shown in Figure 15) that fairleader 478 is placed in outermost somewhere between dead position and interior side direction position, when the parts that pass all connections are measured, at least one axes intersect among pulley plane P and pivot axis P1 or the P3.For example, pivot 570 defines pivot axis P1 and boxed rod 562 is attached to base component 470.Expose to the limit at the opposite side of boxed rod 562 on the relative top of pivot 570.Passing the length of the pivot axis P1 that the parts of all connections measure therefore extends from the relative top of pivot 570.Similarly, pivot 578 defines pivot axis P3 and lower link 566 is attached to base component 470.Expose to the limit at the opposite side of lower link 566 on the relative top of pivot 578.Passing the length of the pivot axis P3 that the parts of all connections measure therefore extends from the relative top of pivot 578.
In this embodiment, be placed in when fairleader 478 on the position in somewhere between outermost lateral position and the interior side direction position, in the time of for example on the outermost lateral position shown in Figure 15, pulley plane P both intersected with boxed rod 562 and lower link 566, intersected with pivot axis P1 and P3 again.Yet, might not need to intersect with all above-mentioned parts at all lateral position places that are in fairleader 478.For example, at least one axis in pivot axis P1-P4 places the side direction inboard of pulley plane P, and when at least one axis among the pivot axis P1-P4 places the side direction outside of pulley plane P, in this embodiment, the second pivot axis P2 that measures according to above definition is just placed on the side direction outside of pulley plane P position as shown in figure 15 fully.In this embodiment, pulley plane P and intersect (Figure 16) in any space S between the surface (for example: surface 600 and 602) in opposite directions 1 of boxed rod 562 and lower link 566.Be placed in when fairleader 478 on the position in somewhere between outermost lateral position and the interior side direction position, in the time of for example on the outermost lateral position shown in Figure 15, pulley plane P also intersects with base component 470.
Although above the different embodiment to inventive features are described, under the situation that does not exceed the spirit and scope of the present invention, can use other remodeling.For example, the size of each parts, shape, position or orientation can change as required.Direct connection or the assembly that is in contact with one another can be equipped with intermediate structure betwixt as shown in the figure.The function of an element can be finished by two, and vice versa.The function of an element can be carried out by another, and the function of each element is interchangeable.The 26S Proteasome Structure and Function of an embodiment can adopt in another embodiment.And do not require and show all advantages In a particular embodiment simultaneously.Be unique to each feature of prior art,, comprise structure and/or concept of function that these features embody, all should be considered as more multiple bright independent description by the applicant no matter be to occur separately or with the further feature combination.Therefore, scope of the present invention should not limited by the initial absorbed expression content that disclosed ad hoc structure reaches particular organization or feature.
Claims (7)
1. bicycle derailleur comprises:
Base component;
Movable link is supporting fairleader;
The first connecting rod member, be connected between this base component and this movable link so that this movable link with respect to this base component along sideway movement;
Wherein this first connecting rod member rotates with respect to this base component around first axle;
Wherein this first connecting rod member rotates with respect to this movable link around second axis; And
Biasing member, be connected into and make this movable link setover along side direction with respect to this base component, wherein when observing perpendicular at least one axis in the first axle or second axis, this biasing member remains in the outside primary importance of the outer surface of first connecting rod member, and at least a portion of this first connecting rod member and this biasing member is overlapping;
Wherein said biasing member comprises spring; And
Wherein said spring comprises the coil spring that is coiling axle of spring, and this axle of spring extends along being substantially perpendicular in this first axle and second axis direction of at least one.
2. according to claim 1 group of chain device, wherein this coil spring has first end of the primary importance of remaining in.
3. according to claim 2 group of chain device, wherein this primary importance is arranged at the second axis place.
4. according to claim 2 group of chain device, wherein this coil spring has second end of the second place of remaining in.
5. according to claim 4 group of chain device, wherein this primary importance is arranged at the second axis place, and wherein this second place is arranged at the first axle place.
6. according to claim 1 group of chain device also comprises:
The second connecting rod member, be connected between this base component and this movable link in case make this movable link with respect to this base component along sideway movement;
Wherein this second connecting rod member rotates with respect to this base component around the third axle line; And
Wherein this second connecting rod member rotates with respect to this movable link around four axistyle.
7. according to claim 6 group of chain device, wherein the part of this biasing member is clipped between this first connecting rod member and this second connecting rod member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/423,247 US20070202978A1 (en) | 2006-02-28 | 2006-06-09 | Low profile rear derailleur |
| US11/423247 | 2006-06-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101085640A CN101085640A (en) | 2007-12-12 |
| CN100548790C true CN100548790C (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101625227A Active CN100548790C (en) | 2006-06-09 | 2006-11-27 | Low outline rear derailleur |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100548790C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012013645B4 (en) * | 2012-07-09 | 2023-03-23 | Sram Deutschland Gmbh | Rear derailleur for a bicycle derailleur and chain guide roller for such a rear derailleur |
| DE102018001253A1 (en) * | 2017-03-20 | 2018-09-20 | Sram Deutschland Gmbh | Rear derailleur for coaxial mounting |
| IT201700035716A1 (en) * | 2017-03-31 | 2018-10-01 | Campagnolo Srl | Bicycle rear derailleur |
| US11319021B2 (en) * | 2017-08-23 | 2022-05-03 | Shimano Inc. | Bicycle rear derailleur |
-
2006
- 2006-11-27 CN CNB2006101625227A patent/CN100548790C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101085640A (en) | 2007-12-12 |
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