CN1133807A - Multi-speed operating device for bicycle - Google Patents
Multi-speed operating device for bicycle Download PDFInfo
- Publication number
- CN1133807A CN1133807A CN 95120453 CN95120453A CN1133807A CN 1133807 A CN1133807 A CN 1133807A CN 95120453 CN95120453 CN 95120453 CN 95120453 A CN95120453 A CN 95120453A CN 1133807 A CN1133807 A CN 1133807A
- Authority
- CN
- China
- Prior art keywords
- cable
- speed
- bicycle
- pulling force
- handgrip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Gear-Shifting Mechanisms (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
The invention discloses a gear change operating mechanism for a bicycle, relating to a gear change operating mechanism for a bicycle which adds operation on a bicycle transmission provided with a recuperator spring (RS) by an operation cabled twist. The invention is characterized in that the invention is provided with a gear change operating component and an assistant spring (AS) which exerts pressure on the gear change operating component through a direction opposite to the movable pressing direction of the operation cabled twist by the recuperator spring (RS). No matter where the gear change operating component stays at, a cabled twist supporting part which acts a support on the operation cabled twist maintains the pull of the operation cabled wire generated by an assistant spring (AS) to be consistent or approximately consistent.
Description
The invention relates to that the bicycle gear device (derailer) that will have return spring (returnspring) is via operating the speed-changing operating device for bicycle that cable (cable) is operated.
Above-mentioned speed-changing operation device, be to have the variable speed operation member is used the assist spring of wanting reversing sense to exert pressure with (energize) direction of exerting pressure of return spring, when if return spring desires to carry out the rightabout speed change of direction with the operation change-speed box, come auxiliary variable speed operation just can implement variable speed operation like a cork by assist spring, this Rear Derailleur (rear derailer) that has Japanese kokai publication sho 61-205586 for example to be put down in writing is known.
Yet, at above-mentioned example, at its variable speed operation member, be to have this swinging center as central circular tube portion, if during operation variable speed operation member, then cylindrical portion can be rotated and be operated and batch cable, or do rollback and operate, simultaneously, assist spring can be exerted pressure (energize) towards the low speed side swing with the variable speed operation member that is installed on this load-carrying element being installed in the variable speed operation member, and the pulling force that betides the operation cable because of assist spring is along with grow more when high-speed side is done variable speed operation more.That is as shown in figure 13, the pulling force CT1 that betides the operation cable owing to the effect of assist spring can become bigger along with moving of speed change tool.
Therefore, for example changed in the past that tape guide roller (guidepully) that the chaining bar uses is to use assist spring and operated and exerted pressure towards high-speed side, simultaneously, when having linked when moving to low speed side change-speed box that the pulling force that betides the operation cable because of assist spring can increase structure and having been operated along with tape guide roller, as shown in figure 13, even use the cable pulling force CT1 of assist spring and the difference of using the cable pulling force CT2 that return spring took place to present little difference in high-speed side, but, then still keep the big state of difference at low speed side, and need big operating effort.That is to say, during this speed-changing operation device, during variable speed operation when slowing down, because cutting the strength of the cable pulling force that uses assist spring from the cable pulling force that uses return spring is exactly necessary operations power, so, near when speed change is deceleration side more low speed (low) side end especially operating effort, the difference of the operating effort when desiring speed change in (high) side at a high speed and be deceleration side will become big.
Again, when making change-speed box, constitute because of return spring and betide the pulling force of operation cable no matter the moving part of tape guide roller keeps necessarily or be roughly certain, even and when considering the operation of this change-speed box, as shown in figure 15, because of the difference of assist spring pulling force CT1 that betides cable and the cable pulling force CT2 that takes place because of return spring becomes bigger at low speed side, and at the operating effort of low speed side during to the deceleration side speed change, though with the difference of the operating effort of high-speed side during to the deceleration side speed change than the situation of Figure 13 compare become less, but still have difference significantly, and cause operability bad.
The purpose of this invention is to provide a kind of binding make by return spring the cable pulling force change type, when pulling force keeps that necessarily or roughly any change-speed box of a definite form is operated, all brisk and all do not have difference at the operating effort of high-speed side and low speed side, or under the little state of pulling force, can carry out the speed-changing operation device of variable speed operation.
In order to reach above-mentioned purpose, the present invention takes technical scheme as follows:
A kind of speed-changing operating device for bicycle, it is the speed-changing operating device for bicycle that the bicycle gear device with return spring RS is operated via the operation cable, it is characterized by: have the variable speed operation member, and by above-mentioned return spring RS, with moved the direction opposite sense of exerting pressure through the aforesaid operations cable, the assist spring AS that above-mentioned variable speed operation member is exerted pressure, have the cable support portion of supporting role in the aforesaid operations cable, so that no matter above-mentioned variable speed operation member is positioned at any operating position, the pulling force of the operation cable that is produced by above-mentioned assist spring AS remains necessarily or is roughly certain.
Described speed-changing operating device for bicycle, it is characterized in that: above-mentioned variable speed operation member is joltily to be supported on the base component, and above-mentioned assist spring AS is for to be linked to the said base member with an end, and other end is linked to the torsion-coil spring of above-mentioned variable speed operation member.
Described speed-changing operating device for bicycle is characterized in that: above-mentioned cable support portion is to link operation cable and above-mentioned variable speed operation member, and the cable support portion that aforesaid operations cable drawing can be become keep linearity.
Described speed-changing operating device for bicycle, it is characterized in that: regardless of moving according to the operation of speed change handgrip and making the non-productive operation power AF that torsional variation produced of assist spring AS take place how to change, set the relevant position of cable support portion and outer grip slipper, by non-productive operation power AF, make the cable pulling force CT1 that is produced on the inboard cable by cable support portion and outer grip slipper that substantial variation not take place.
Described speed-changing operating device for bicycle, it is characterized by: above-mentioned variable speed operation member is a kind of speed change handgrip that can joltily be supported in bicycle handle bar by the said base member, and, have and withstanding finger hold, and have the operating position of above-mentioned variable speed operation member is kept in a plurality of location that can connect disengaging by positioning unit and above-mentioned positioning unit with depressed part detent mechanism towards 2 of above-mentioned variable speed operation member moving direction decentralized configuration.
Described speed-changing operating device for bicycle is characterized by, and the said base member is that the handgrip carriage that handle is installed on bicycle handle bar is controlled in brake.
According to above formation, the present invention has following effect:
During even with change-speed box anti-impact return spring and towards the direction of operating speed change, as when adopting assist spring, just invest complementary operating effort, and the operating effort that must apply with manual type is owing to the auxiliary operating effort that reduces its auxiliary deal of assist spring, but, at this moment, even with the variable speed operation component operation to any operating position, because supporting the operation cable, the cable support portion make the employed cable pulling force of assist spring can keep certain or approximately certain, so, when if operation causes the cable pulling force can change the change-speed box of form because of the effect of assist spring, because the caused cable pulling force of assist spring CT1, the cable pulling force CT2 that is taken place with return spring becomes tensile relationship as shown in figure 14, and compare with known example shown in Figure 13, can make in the required manual operation power of low speed side, tail off with difference and carry out variable speed operation in the required manual operation power of high-speed side.Again, if when operating the change-speed box of or an about definite form certain because of the cable pulling force maintenance that return spring took place, the cable pulling force CT2 that is taken place because of cable pulling force CT1 and return spring that assist spring took place, to become tensile relationship as shown in figure 16, and compare with the known example of Figure 15, can make in the required manual operation power of low speed side, with difference in the required manual operation power of high-speed side can be little than conventional approaches.If when adopting the change-speed box of latter form, if when adopting because of cable pulling force that return spring took place, then become to become in the required manual operation power of low speed side and in the difference of the required manual operation power of high-speed side and carry out variable speed operation under the null state with the change-speed box that keeps because of identical two pulling force of cable pulling force that assist spring took place all dashing.Among Figure 13, Figure 14, Figure 15 and Figure 16, abscissa represents that from left to right from the most high-revolving shift position of low speed, ordinate is represented the cable pulling force.
When even operation causes the change-speed box of version because of return spring cable pulling force, even or operation keeps necessarily because of cable pulling force that return spring took place or roughly during the change-speed box of a definite form, not only but acquisition the auxiliary of assist spring in limit operated, and, can not feel in the action required power of low speed side and high-speed side and to exert oneself so as conventional approaches, and according to change-speed box even almost do not feel difference and can operate, no matter from operating effort or operation feeling carried out brisk variable speed operation.
When implementing transmission system of the present invention, shown in the 1st embodiment, the variable speed operation member is become oscillating type, simultaneously, if when assist spring adopts torsion-coil spring (torsion coil spring), then with the variable speed operation member supported to and can be compared by parallel mobile constitutor by four linkage rod group (four-bar linkage), for example holding only thrusts out one's fingers under the state of handlebar can operate the variable speed operation member, again, whole speed-changing operation device can become comparatively light and handy.Thereby can be installed on handgrip very delicately and operation easily, simultaneously, can constitute the higher bicycle of commodity value.
When implementing transmission system of the present invention, shown in the 1st embodiment, if when adopting that the operation cable can being kept is pulled and be in line the structure of shape, then batch the operation cable with having to operate, or roll out the required cylindrical portion of cable, and, this cylindrical portion is formed non-circular formation to be compared, as long as with the cable support portion, become suitable relevant position with holding parts configuration settings, just the cable pulling force that assist spring took place can be remained certain or approximately certain individual side cable (outer cable).That is to say, be set at suitablely, also can lightly be changed from this viewpoint than simple structure as long as can become the installation constitution that to operate cable.
When implementing transmission system of the present invention, shown in the 1st embodiment, the variable speed operation member is equiped with and withstands operating portion with being positioned at 2 fingers that disperseed towards speed change tool moving direction, and, if when installing the detent mechanism of the operating position of keeping the variable speed operation member, then the limit is held handlebar and can be operated the variable speed operation member.That is, not only the mat assist spring can be operated outside the variable speed operation member like a cork, and, move too many detent mechanism by the variable speed operation member can not surpass operating position and the limit suitably be positioned decide operating position and can carry out variable speed operation.More and, the operating portion that withstands two fingers is configured to be positioned at one side for using thumb with regard to maneuverable place, for example the body front side of handlebar (handle bar) is positioned at the handlebar downside, and Fang Ze is positioned at the maneuverable place of forefinger in addition, for example in the other side's side of handlebar and be disposed at when being positioned at the handlebar downside, during the actuating length of variable speed operation member is bigger even the gear number is many situation, if desire is shaken when operation with the variable speed operation member towards the other side's side, can with regard to total kilometrage only a side the finger hold of withstanding use thumb be operated like a cork, when operation is shaken in the body front side, can only use forefinger be operated like a cork other side's the finger hold of withstanding if desire with regard to total kilometrage.Therefore, not only but the limit supported cart is advantageously carrying out variable speed operation, and, even the gear number for a long time, from with the variable speed operation member in alignment with the Action Target position, or from the use of variable speed operation member, further again, from easy use operating effort, can carry out variable speed operation like a cork.
When implementing transmission system of the present invention, shown in the 1st embodiment, if with base component for doing when brake controlled handle (brake lever) and be installed on the used handgrip frame 22 (leverbracket) of handlebar, then with adopt brake to control the formation that handle is installed on handlebar individually to compare, whole speed-changing operation device can be made light and handy and the variable speed operation member is close to the hand grip portion of handlebar, and use the hand of supported cart handle promptly to become easy operation.Thereby, the limit supported cart and variable speed operation becomes easily, can be installed on handlebar leggiero.
Following embodiments of the invention being done with reference to accompanying drawing specifies:
Fig. 1 is the instruction diagram of expression according to the Rear Derailleur serviceability of the speed change handgrip of the embodiment of the invention, and its variable speed operation member and change-speed box are the positions that is positioned at high-speed side.
Fig. 2 is the instruction diagram identical with Fig. 1, and variable speed operation member and change-speed box are the positions that is positioned at the dead slow side.
Fig. 3 is the lateral plan of Fig. 1,2 whole Rear Derailleur.
Fig. 4 is the planar view of Fig. 1,2 whole speed-changing operation device.
Fig. 5 is the section-drawing of the speed-changing operation device of Fig. 4.
Fig. 6 is the section-drawing of speed change handgrip installation portion of the speed-changing operation device of Fig. 4.
Fig. 7 is the indicating device instruction diagram of the speed-changing operation device of Fig. 4.
Fig. 8 is by the instruction diagram of the present invention because of the cable pulling force that assist spring and return spring took place.
Fig. 9 is the shape instruction diagram of assist spring of the present invention.
Figure 10 is that expression is because the cable pulling force instruction diagram that assist spring took place of variable speed operation member of the present invention.
Figure 11 is the skeleton diagram according to the speed-changing operation device of other embodiments of the invention.
Figure 12 is because of cable pulling force instruction diagram that assist spring and return spring took place at Figure 11.
Figure 13 according to tape guide roller when the moving the change-speed box that increases tension type because of return spring and assemble known variable speed operation member of low speed side, because of assist spring, and the cable pulling force instruction diagram that return spring took place.
Figure 14 is identical with Figure 13 and the cable tension instruction diagram of expression when substituting variable speed operation member in the past and use variable speed operation member of the present invention with the present invention.
Figure 15 is identical with Figure 13, and for no matter tape guide roller moves and during pulling force that return spring took place to be the change-speed box of a shaping type assemble known variable speed operation member to low speed side, because of assist spring, and the cable pulling force instruction diagram that return spring took place.
Figure 16 is the figure same with Figure 15, and the cable pulling force instruction diagram of expression when substituting known variable speed operation member and using speed-changing operation device of the present invention.
As shown in Figure 4, the handgrip frame 22 that handle 5 is controlled in brake is installed, 1 speed change handgrip 21 is installed is waited and constitute speed-changing operating device for bicycle 20 for constituting near the hand grip portion of handlebar 2.This speed-changing operation device 20 is as shown in Figure 1, by outside cable (outer cable) 3a and inboard cable (inner cable) the operation cable 3 that 3b constituted, be linked to bicycle gear device 10 with tape guide roller 11 and return spring RS etc., by speed change handgrip 21 light operation Rear Derailleurs 10 by operation cable 3,7 backgears using for each back-wheel drive of bicycle use change chaining bar 4, and it is constructed as follows in detail.
That is, as Fig. 4, Fig. 5 and shown in Figure 6, above-mentioned handgrip frame 22 constitute to be embedded in handlebar 2 and to use installation screw 22b to be fastened having with being positioned at band (band) 22a of portion that controls handle 5 side opposition sides that brakes, and are installed on handlebar 2.Be installed on installation screw 23 for this handgrip frame 22 and fasten a fixing shaft component 24 that constitutes, and, be tightly fixed on the pawl grip slipper (jawholder) 25 that handgrip frame 22 is constituted by these shaft component 24 bolts, for above-mentioned shaft component above-mentioned speed change handgrip 21 is rotated and to be supported in freely around the axle center 24a of shaft component 24, simultaneously, the cover plate body 26 that covers speed change handgrip 21 base portion 21a etc. being used crozes (spline) is that to close in shaft component 24 end be to end can not constituting rotationally and using and screw 27 is installed is fixed.In speed change handgrip 21 base portion 21a, the assist spring AS that torsion-coil spring constitutes is housed, above-mentioned cover plate body 26 have the outside cable 3a of support operation cable 3 employed outside grip slipper (outer holder) 28, simultaneously, have by block at above-mentioned speed change handgrip 21 and to support the cable support portion 21b that the inboard cable 3b of cable nipple (cablenipple) 3c operation cable 3 is constituted, by as above, constitute above-mentioned speed-changing operation device 20.
That is to say, speed change handgrip 21 is via a shaft component 24 and handgrip frame 22, be mounted to and shake repeatedly around the 24a of axle center at handlebar 2, at cover plate body 26 outshots from speed change handgrip 21, disperse to the moving direction of speed change handgrip 21, simultaneously, for be positioned at than handlebar 2 more two fingers of eyeball side installing withstand operating portion 21A, 21B is operated and withstand the arbitrary of operating portion by these fingers.Promptly, speed change handgrip 21 is desired to shake direction D when operation to shown in Figure 5, Figure 10 then, abscissa is from left to right represented the shift position from 1 speed to 7 speed, ordinate is represented the cable pulling force, withstanding operating portion 21A at finger withstands thumb and only uses this finger to withstand operating portion 21A and can be operated with regard to its total kilometrage, if desire to shaking as shown in Figure 5 direction U when operation, is then withstood speed change handgrip 21 operating portion 21B for finger and is withstood forefinger and only use this finger to withstand operating portion 21B and just can be operated its total kilometrage.Again, mat is located at 7 of location division 21c location depressed part 21e of speed change handgrip 21, with the resin system positioning pawl 29 that is installed on above-mentioned pawl grip slipper 25, constitute with speed change handgrip 21 keep decide the required detent mechanism of each operating position at 7 places.Substitute positioning pawl 29 and also can adopt the location with ball etc., therefore these are generically and collectively referred to as positioning unit 29.That is if when shaking operation speed change handgrip 21, then operating effort is to close to break away from when the depressed part 21e of location with the service portion 29a of positioning pawl 29 by this, then since this embedding be close and with speed change handgrip 21 be positioned fixed operating position.Promptly, speed change handgrip 21 is to be positioned at a most distolateral location depressed part 21e among 7 location depressed part 21e from the low-tach 1 fast position that is positioned at most in alignment with the service portion 29a of positioning pawl 29, and moves to the location depressed part 21e that is positioned at his distolateral position among 7 the location depressed part 21e most service portion 29a the most high-revolving 7 fast positions in alignment with positioning pawl 29.Cable support portion 21b is along with speed change handgrip 21 moves to low speed side, inboard cable 3b pulled out from outside cable 3a operated, along with speed change handgrip 21 moves to high-speed side, though inboard cable 3b is rolled out operation, but, be not to batch the inboard cable 3b that pulls out from outside cable 3a, operate but form with linearity.Promptly, at this, cable support portion 21b is along with speed change handgrip 21 moves, track of being described and non-rectilinear but circular arc, still, the inboard cable 3b that is pulled out from outside cable 3a, be no matter its amount of pulling out, but often be pulled slightly linearly and kept, so, claim this to be the shape stretched operation that is in line.Assist spring AS be by one distolateral be to terminate in handgrip frame 22 25a of mount pad portion of pawl grip slipper 25 but terminate in handgrip frame 22, and distolateral in addition be to terminate in speed change handgrip 12 base portion 21a speed change handgrip 21 is applied pressure to above-mentioned 1 fast position.That is, the return spring RS by change-speed box 10 applies pressure to speed change handgrip 21 and the direction of exerting pressure opposite sense via operation cable 3.
As shown in Figure 8, when speed change handgrip 21 moves to the field operation of 7 fast positions from 1 fast position, be to move as the arc track T at center along the axle center 24a that shakes with speed change handgrip 21 as the cable support portion 21b of the inboard cable 3b strong point.If when shaking the non-productive operation power AF of operation speed change handgrip 21 because of assist spring AS on this track t, then in the inboard cable 3b from cable strong point 21b to outer grip slipper cable pulling force CT1 can take place because of this non-productive operation power AF.Ratio for the value of thrust of the non-productive operation power AF of this cable pulling force CT1, be for changing for leaning angle A according to inboard cable 3b by the straight line L that shakes axle center 24a and cable strong point 21b, so, cable strong point 21b can move, even because of the torsional variation of assist spring AS causes non-productive operation power AF to change, when if above-mentioned leaning angle A can do suitable variation, cable pulling force CT1 will not change, even or taken place to change also not can great changes will take place as non-productive operation power AF.And above-mentioned leaning angle A throws away cable support portion 21b according to speed change handgrip 21, with the setting of the relevant position of the outer grip slipper 28 of cover plate body 26 and decide.Therefore, if when cable support portion 21b is become suitable relevant position with outer grip slipper 28 configuration settings, then the cable pulling force T1 that betides inboard cable 3b because of assist spring AS is with any position of speed change handgrip 21 from the fast position of 1 fast position operation to 7, and, operate between 1 fast position and the 2 fast positions or between 4 fast positions and the 5 fast positions etc. between any speed threshold position of the fast position of 1 fast position operation to 7, that is to say that all big activation of arbitrary operating position that operates in the whole operation field keeps certain.In view of the above, adopted torsion-coil spring as shown in Figure 9 for being assist spring AS, and when cable support portion 21b being become relevant position as shown in Figure 8 with outer grip slipper 28 configuration settings, then as shown in figure 10, the cable pulling force that assist spring AS is taken place is no matter where speed change handgrip 21 operating positions are positioned at, even also can remain when quickening operation certain (CT1-1), or, even also can remain certain (CT1-2) when doing deceleration-operation.
Promptly, if when concrete numerical value being described according to present embodiment, if with the inboard cable 3b configuration settings of cable support portion 21b in when making speed change handgrip 21 operate in 1 fast position, then outer grip slipper 28 will be positioned at the about 25.9mm part of the distance D 1=that shakes axle center 24a from speed change handgrip 21 to the axle center of the inboard cable 3b of cable support portion 21b, and if when speed change handgrip 21 operated in 7 fast positions, the axle center of the inboard cable 3b of then outer grip slipper 28 and cable support portion 21b will be positioned at the about 29mm of distance D 7=that shakes axle center 24a from above-mentioned.And mat is pulled down when positioning pawl 29 is equilateral to make it not act on speed change handgrip 21 and operate speed change handgrip 21, when grip slipper 28 is measured the pulling force that inboard cable 3b taken place outside, then measures cable pulling force CT1-1 as shown in figure 10, the situation of CT1-2.That is, cable pulling force CT1-1 is that the measured value with the cable pulling force of speed change handgrip 21 when 1 fast position operation accelerates to 7 fast positions is 3.35～3.4kgf.Cable pulling force CT1-2 be with speed change handgrip 21 during from the fast position of deceleration-operation to 1,7 fast position the measured value of its cable pulling force be 2.72～3.4kgf.That is to say, even be that certain pulling force CT1 of 2.68～3.4kgf roughly takes place because of assist spring AS inboard cable 3b when speed change handgrip 21 operated in any operating position in its whole operation field.At this, the cable pulling force (CT1-1) when speed change handgrip 21 is quickened in operation and the difference of cable pulling force (CT1-2) be result from friction wait take place.
The formation of change-speed box 10 is as Fig. 1,2 and shown in Figure 3.Promptly, constitute: will the supporter 14 of tape guide roller 11 and straining pulley (tentionpully) 12 be installed via leading chain spare 13, with be linked to trailing wheel with pitching (fork) 1 protrusions that is constituted 15 by linking board 15a with bolt, use the jack back 1617 of pair of right and left to be linked, simultaneously, constitute by supporter 14 and walking bar rod 16,17 and protrusions 15 and form parallel four linkage rod group (fourbar linkage) R1 of mechanism.The jack back 16 of pair of right and left, among 17 from the right side walking bar rod 16 operation armed lever 16A of portion that extends of walking bar rod 17 to the left, with install by the return spring RS that draws coil spring to become to supporter 14, in the binding board 15a of protrusions 15 connects to the part that is rotating at around the B of axle center, adorned the 1st back-moving spring S1 that torsion-coil spring became, and the 2nd back-moving spring S2 that become by torsion-coil spring has been housed in the chain guide for use 13 of supporter 14 connects to the part that is rotating at around the P of axle center.Have the required outer grip slipper 18 of outside cable 3a that has support operation cable 3 at protrusions 15, simultaneously, the inboard cable 3b bolt that uses cable check screw 19 will operate cable 3 tightly is linked to the cable support portion that the aforesaid operations armed lever 16a of portion is constituted.
That is, tape guide roller 11 uses parallel four R1 of linkage rod group mechanism, can reciprocatingly be installed on the 1a of erection of transmission portion that extends with the fork end of fork 1 from trailing wheel toward cross-car.Promptly, side belt wheel 11 is as shown in Figure 2, can reciprocatingly chain 4 be hanged up 1 fast position of the low speed gear (lowgear) of the maximum outside diameter that among 7 backgears, is positioned at body inner side toward the car body transverse direction, with as shown in Figure 1, chain 4 is hanged up between 7 fast positions of the top gear (top gear) that is positioned at the minimum outer diameter that is positioned at the car body outside most, pulling force by inboard cable 3b is done move operation in regular turn and is changed the chaining bar in low speed side by high-speed side to big footpath side from 7 back-geared path sides, on the other hand, the elastic recovering force of mat return spring RS is done move operation in regular turn and is changed the chaining bar in high-speed side by low speed side to the path side from 7 back-geared big footpath sides.The 1st tight spring B 1 be one distolateral be to terminate in to link board 15a, and distolateral in addition for being to terminate in protrusions 15 protrusions 15 is exerted pressure toward the direction BF that shakes around the B of axle center with fork 1 for trailing wheel, thus via tape guide roller 11 and straining pulley 12 Qian and pulling force to chain 4.Again, the 2nd back-moving spring B2 be one distolateral be to terminate in supporter 14, and in addition distolaterally will lead chain spare 13 and around the P of axle center, exert pressure in leading chain spare 13 for tying toward shaking direction PF for supporter 14, thereby via tape guide roller 11 and straining pulley 12 Qian and pulling force to chain 4.
As shown in Figure 8, at Rear Derailleur 10, when tape guide roller 11 when 1 fast position moves to the moving range of 7 fast positions, for the cable check screw 19 of doing inboard cable 3b point of contact, be to move as the arc track T at center along the connecting pin axle center X that belongs to right moving connecting rod 16 and protrusions 15 binding centers.If supposition is done the reversing during operating effort RF of right walking bar rod 16 because of return spring RS shakes on this track T, because of this operating effort RF that reverses, to outer grip slipper 18 parts cable pulling force CT2 can take place from inboard cable 3b point of contact 19.Value of thrust ratio for the operating effort RF that reverses of cable pulling force CT2, because of according to changing for linking the leaning angle of lock shaft heart X with the inboard cable 3b of straight line L by point of contact 19, so point of contact 19 also is moved according to moving of tape guide roller 11, even the operating effort RF that reverses changes owing to the length variations of return spring RS, when if above-mentioned leaning angle A can suitably change, cable pulling force CT2 can not change, or, so big variation takes place even change also can be set at unlike the operating effort RF that reverses.And, because of above-mentioned leaning angle A is a cable point of contact 19 by right walking bar rod 16, with the setting of the relevant position of the outer grip slipper 18 of protrusions 15 and decide, so, mat is suitably set the relevant position of cable point of contact 19 and outer grip slipper 18, so, mat is suitably set the relevant position of cable point of contact 19 and outer grip slipper 18, suppose that tape guide roller 11 and back-moving spring 12 do not change the chaining bar, and if can not change extension during antagonistic force from chain 4 at tape guide roller 11, betide the pulling force CT2 of inboard cable 3b because of return spring RS, be the arbitrary speed threshold position of tape guide roller 11 from fast position, 1 fast position to 7, or 1 between fast position and the 2 fast positions or between 4 fast positions and the 5 fast positions etc. between arbitrary speed threshold position of fast position, 1 fast position to 7, that is, even move to that arbitrary position of whole mobile field also can keep necessarily or roughly certain.The cable point of contact 19 that decides right walking bar rod 16 in view of the above is during with the configuration of outer grip slipper 18, then tape guide roller 11 and straining pulley 12 not chaining bar 4 and becoming at tape guide roller 11 can not change under the state of extension antagonistic force from chain 4, then no matter the position of tape guide roller 11 how, constitute in inboard cable 3b and take place, the cable pulling force CT2 of 2.68～3.4kgf because of return spring RS.
That is to say, if, only Rear Derailleur 10 and speed-changing operation device 20 are used 3 bindings of operation cable and be not installed on car body, even or be installed on car body and also chain 4 do not hanged up in tape guide roller 11 and straining pulley 12 and the state of hanging antagonistic force that changes from chain 4 is not taken place in order to do making at tape guide roller 11, and, also make positioning pawl 29 also become the state of not having an effect in speed change handgrip 21.If when operating speed change handgrip 21 with this understanding, then speed change handgrip 21 is from arbitrary speed threshold position of fast position, 1 fast position to 7, or 1 between fast position and the 2 fast positions or between 4 fast positions and the 5 fast positions etc. between arbitrary speed threshold position of fast position, 1 fast position to 7, promptly, even when constituting any position that is positioned at the whole operation field, because of return spring RS betides the cable pulling force CT2 of inboard cable 3b, keep in balance with the cable pulling force CT1 that betides inboard cable 3b because of assist spring AS.
That is, desire speed change when deceleration side,, speed change handgrip 21 is operated towards shaking direction D as Fig. 1 and shown in Figure 5.So speed change handgrip 21 is the inboard cable 3b of pull operation, and inboard cable 3b makes return spring RS that elastic deformation take place and tape guide roller 11 is done move operation together with straining pulley 12 towards body inner side.By this, tape guide roller 11 changes chain 4 and hangs to big footpath side from backgear path side, and gear just switches to low speed side from high-speed side.At this moment, even from 1 speed when 7 speed switch to any gear, inboard cable 3b also keeps in balance because of return spring RS pulling force CT2 that takes place and the pulling force CT1 that assist spring AS is taken place, and the operating effort of return spring RS generation elastic deformation desirable strength is assisted by assist spring AS.Thereby, put on the manual operation power of speed change handgrip, as long as be overcome act on tape guide roller 11 change chaining bar resistance, the outside cable 3a of operation cable 3 and the friction of inboard cable 3b because of the operation resistance that positioning pawl 29 is taken place, can be operated speed change handgrip 21.
In addition, as desiring speed change when the acceleration side, as Fig. 2 and shown in Figure 5, with speed change handgrip 21 towards shaking direction U operation.So, speed change handgrip 21 rolls out the inboard cable 3b of operation, and tape guide roller 11 is carried out move operation together with straining pulley 12 contends with the antagonistic force that changes the chaining bar that acts on two belt wheels 11,12 to the car body outside in order to roll out that the elastic recovery action takes place this cable return spring RS.By this, tape guide roller 11 changes chain 4 and hangs to the path side from back-geared big footpath side, and gear will switch to high-speed side from low speed side.At this moment, even from 1 speed when switching to any gear of 7 speed, inboard cable 3b also keeps in balance because of return spring RS pulling force CT2 that takes place and the pulling force CT1 that assist spring AS is taken place, and desires to make the operating effort of the required intensity of assist spring AS generation elastic deformation to be assisted by return spring RS.Thereby, put on the manual operation power of speed change handgrip 21, as long as be to overcome to act on operation outside cable 3a of cable 3 and the friction of inboard cable 3b,, can operate speed change handgrip 21 because of the operation resistance that positioning pawl 29 is taken place.
As shown in Figure 7, expose at cover plate body 26 from speed change handgrip 21, and, become towards the circumferential surface sections 21d of car body back and have placed arrow type mandatory sign 31, simultaneously, corresponding to the above-mentioned circumferential surface sections 21d of cover plate body 26, and, wall wall 26a towards the car body back has 7 numerals or gear sign 32 ..., constituted the indicating device 30 of representing gear by above-mentioned circumferential surface sections 21d and wall part 26a.
That is, if when shaking operation speed change handgrip 21, then circumferential surface sections 21d is moved for wall part 26a, when speed change handgrip 21 becomes action required position the 7 fast positions from 1 fast position, then pointer sign 31 can 7 gears of indication indicates in 32 the operating position corresponding to speed change handgrip 21, there is arbitrary gear of pointer sign 31 to indicate 32 owing to know indication, so can judge that blocked operation is to arbitrary grade of number from the 1st speed to the 7 speed.And, do for doing the pointer structure with speed change handgrip 21, made indicating device and cover plate body 26 is used respectively as member as indicating in the hope of the simplification of structure.
Fig. 5 and fix screw 33 shown in Figure 6 are to make the first end of fix screw 33 embed the depressed part of speed change handgrip 21 and tying acts on speed change handgrip 21 to be installed on cover plate body 26.When fix screw 33 tyings act on speed change handgrip 21, then speed change handgrip 21 is fixed in the 7th fast position.That is to say, hand over dirty change-speed box 10 and speed-changing operation device 20 to be assemblied in car body and when operation cable 3 is linked, by return spring RS Rear Derailleur 10 is applied pressure to 7 fast positions, so, speed change handgrip 21 contended with that spring force is in the assist spring AS of severe deformation state and the limit is maintained at 7 fast positions when implementing, be not easy to link operation.Thereby, if when desiring to operate the binding of cable 3, if when fix screw 33 is positioned at active position, because of not needing that the speed change handgrip 21 assist spring AS that contends with is maintained at the manual operation of 7 fast positions, so, can link operation like a cork.Then, when finishing this binding operation, just pull down fix screw 33, or switch to the non-working position of removing the tying effect, so just can use speed change handgrip 21 because of screw 33 first ends come off from speed change handgrip 21.And, if when adopting fix screw 33 that speed change handgrip 21 can be maintained at 7 fast positions, then, the connection power that makes detent mechanism act as purpose for linking easily, for the purpose of taking place intentionally to strengthen, the speed change handgrip 21 of detent mechanism can be maintained at fixed operating position required can to set more weak connection power very convenient.Promptly, when if the pulling force of assist spring AS and return spring RS has evident difference, connection power must be set at and contend with its pulling force difference and when speed change handgrip 21 can be maintained at operating position, then detent mechanism is had an effect surely not according to institute, but, if during the mechanism that the pulling force of employing assist spring AS and the pulling force of return spring RS can be kept in balance mutually, then locate the connection power of using, can prevent that speed change handgrip 21 is moved owing to vibration waits, simultaneously, even with can identification speed change handgrip 21 switch to the weak connection power of fixed operating position degree, detent mechanism also can be had an effect surely according to institute.Its result, the variable speed operation resistance that can as far as possible suppress to take place because of detent mechanism can be operated speed change like a cork.
Press, substitute fix screw 33 and adopt pin, key or constitute be filled between speed change handgrip and cover plate body decide the place obturator etc. also can obtain same effect.If employing constitutes the various stoppers that can switch to active state and remove active state and gets final product.Other embodiment
Figure 11 is the speed-changing operation device 40 that expression has other embodiment structures.That is, the base component 41 that is fixed in handlebar 2 will be constituted, with speed change handgrip 42 with operation armed lever 42a of portion, use a pair of walking bar rod 43,44 to be linked, simultaneously, base component 42 constitutes with walking bar rod 43,44 and speed change handgrip 42 and produces row four R of linkage rod group mechanism 2.Has a pair of walking bar rod 43, the 44a of armed lever portion that is extended to side's walking bar rod 44 in 44, be installed on the assist spring AS that back-moving spring constitutes with base component 41, have the required outer grip slipper 18 of outside cable 3a of support operation cable 3 at speed change handgrip 42, and use cable check screw 19 to be linked the cable support portion 44b that is constituted at the inboard cable 3b that the above-mentioned armed lever 44a of portion will operate cable 3.
Base component 41 has constituted the stationary links of parallel four R2 of linkage rod group mechanism, and speed change handgrip 42 is to do move operation for handlebar 2.That is, parallel four R2 of linkage rod group mechanism have constituted speed change handgrip installing mechanism, and this is supported for movable operation handlebar 2 with speed change handgrip 42.If during the mobile speed change handgrip 42 of operation, then can do relative shaking with speed change handgrip 42, will be manipulated into and roll out or pull out so operate the inboard cable 3b of cable 3 because of walking bar rod 44.Simultaneously, if during move operation speed change handgrip 42, then walking bar rod 44 will carry out relative shaking with base component 41, cause the assist spring junction of walking bar rod 44, change with the distance of the assist spring junction of base component 41 and because of assist spring can deform, and be that inboard cable 3b is applied pressure to parallel four R2 of linkage rod group mechanism to the shape of the operation that is pulled as its antagonistic force assist spring AS.
As shown in figure 12, during the speed-changing operation device 40 of these parallel four linkage rod group patterns, for the cable check screw 19 of doing inboard cable 3b point of contact for along with walking bar rod 44 with will be that the arc track T at center moves for being connecting pin axle center X with installation component 41 binding centers.Cable pulling force CT1 supposes when this track T because of assist spring AS the required non-productive operation power of operation walking bar rod 44 has taken place to shake, because of this non-productive operation power AF from cable point of contact 19 to outer grip slipper 18 for extremely inboard cable 3b part can take place.Ratio for the value of thrust of the auxiliary and AF of this cable pulling force CT1, be because of changing for the inboard cable 3b of straight line L leaning angle A by binding axle center X and cable point of contact 19, so, even non-productive operation power AF changes according to the length variations of assist spring AS according to moving of cable point of contact 19, as long as above-mentioned leaning angle A does suitable variation, cable pulling force CT1 can not change, or, can not play so big variation even taken place to change as non-productive operation power AF yet.And, because above-mentioned leaning angle A is the cable point of contact 19 according to walking bar rod 44, with the setting of the relevant position of the outer grip slipper 18 of speed change handgrip 42 and determine, so, mat is suitably set the relevant position of cable support portion 44b and outer grip slipper 18, because of the cable pulling force CT1 that assist spring AS took place is no matter the variation of the operating position of speed change handgrip 42 will keep certain or be roughly necessarily.And, if during this speed-changing operation device, reason is in constituting with the parallel four linkage rod group mechanisms of transmission side same mechanism, so, if the specifications such as size of parallel four R2 of linkage rod group mechanism are formed when same with the specifications such as size of parallel four R1 of linkage rod group mechanism of change-speed box 10, the pulling force CT1 of the inboard cable 3b that is taken place with the assist spring AS of speed-changing operation device 40, the pulling force CT2 of the inboard cable 3b that is taken place with return spring RS at change-speed box 10 can become to be set as equally and easily and keep in balance.That is, if mutual specifications such as size are become when same, further mutual springback power is also made basically it become when same again, pulling force CT1 can become identical with CT2 and keep in balance.
The present invention is except Rear Derailleur is used, also the speed-changing operation device of using applicable to Front Derailleur.
Be installed on the pattern of the transmission system of handlebar, be to constitute to be supported in handgrip frame 22 and to be installed on outside the handlebar 2 together with brake handle 5, certainly be implemented on and have the special-purpose installation component different with handgrip frame 22, and constitute with brake handle 5 in addition, the mode that is installed on handlebar 2 is separately implemented also can.Again, substitute above-mentioned speed change handgrip 21,42, and rotating operation is nested in handlebar freely with the hand grip portion that forms handlebar and adopt the also applicable the present invention when constituting speed-changing operation device of the swinging operating body of operating change-speed box via the operation cable.Thereby, these speed change handgrips or swinging operating body are generically and collectively referred to as variable speed operation member 21,42, and handgrip frame 22 addresses are base component 22.
The present invention changes chain and hangs member and constitute to the use of the change-speed box of high-speed side operation except being provided as return spring, also can be used in the use that return spring changes chain the speed-changing operation device when hanging member and constituting change-speed box to the low speed side operation.At this moment, assist spring can constitute the variable speed operation member will be exerted pressure to high-speed side.
As shown in the Examples, the cable pulling force that return spring took place, no matter the position of tape guide roller, keep necessarily or roughly certain numerical value, and, make for the purpose of the change-speed box that the cable pulling force keeps in balance in order to operate because of assist spring, except using the present invention, though the present invention also can be used in cable pulling force that return spring takes place for necessarily or the cable pulling force that takes place of cable pulling force roughly certain but that not necessarily taken place with the assist spring change-speed box of keeping in balance or desire operation return spring can change along with speed change change-speed box the time speed-changing operation device use, and help the improvement that benefits operability.
Claims (6)
1, a kind of speed-changing operating device for bicycle, it is the speed-changing operating device for bicycle that the bicycle gear device (10) with return spring (RS) is operated via operation cable (3), it is characterized by: have variable speed operation member (21,42), and by above-mentioned return spring (RS), with moved the direction opposite sense of exerting pressure through aforesaid operations cable (3), to above-mentioned variable speed operation member (21, the assist spring of 42) exerting pressure (AS), has supporting role in the cable support portion of aforesaid operations cable (3) (21b, 44b), so that no matter above-mentioned variable speed operation member (21,42) be positioned at any operating position, the pulling force of the operation cable (3) that is produced by above-mentioned assist spring (AS) remains necessarily or is roughly certain.
2, speed-changing operating device for bicycle as claimed in claim 1, it is characterized in that: above-mentioned variable speed operation member (21) is can joltily be supported on the base component (22), and above-mentioned assist spring (AS) is for to be linked to said base member (22) with an end, and other end is linked to the torsion-coil spring of above-mentioned variable speed operation member (21).
3, speed-changing operating device for bicycle as claimed in claim 1 or 2, it is characterized in that: above-mentioned cable support portion (21b) is to link operation cable (3) and above-mentioned variable speed operation member (21), and the cable support portion that aforesaid operations cable (3) drawing can be become keep linearity.
4, as claim 1 or 2 or 3 described speed-changing operating device for bicycle, it is characterized in that: regardless of moving according to the operation of speed change handgrip (21) and making the non-productive operation power AF that torsional variation produced of assist spring (AS) take place how to change, set the relevant position of cable support portion (21b) and outer grip slipper (28), by non-productive operation power AF, make the cable pulling force CT1 that is produced on the inboard cable (3b) by cable support portion 21b and outer grip slipper (28) that substantial variation not take place.
5, speed-changing operating device for bicycle as claimed in claim 2, it is characterized by: above-mentioned variable speed operation member (21) is a kind of speed change handgrip that can joltily be supported in bicycle handle bar (2) by said base member (22), and, have and withstanding finger hold (21A), (21B), and have the operating position of above-mentioned variable speed operation member (21) is kept in a plurality of location that can connect disengaging by positioning unit (29) and above-mentioned positioning unit (29) with depressed part (21e) detent mechanism towards 2 of above-mentioned variable speed operation member moving direction decentralized configuration.
6, speed-changing operating device for bicycle as claimed in claim 5 is characterized by, and said base member (22) is that the handgrip carriage that handle (5) is installed on bicycle handle bar (2) is controlled in brake.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP316232/1994 | 1994-12-20 | ||
| JP31623294A JP3445852B2 (en) | 1994-12-20 | 1994-12-20 | Speed change device for bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1133807A true CN1133807A (en) | 1996-10-23 |
| CN1059396C CN1059396C (en) | 2000-12-13 |
Family
ID=18074790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95120453A Expired - Fee Related CN1059396C (en) | 1994-12-20 | 1995-12-20 | Multi-speed operating device for bicycle |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3445852B2 (en) |
| CN (1) | CN1059396C (en) |
| TW (1) | TW276229B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427355C (en) * | 2005-05-19 | 2008-10-22 | 株式会社岛野 | Position control mechanism for bicycle control device |
| CN100457542C (en) * | 2004-08-31 | 2009-02-04 | 坎培诺洛有限公司 | Actuation device for a control cable for a bicycle gearshift, with rotatable support of the cable-winding bobbin |
| CN101704400A (en) * | 2006-02-28 | 2010-05-12 | 株式会社岛野 | Low outline rear derailleur |
| US8277346B2 (en) | 2006-02-28 | 2012-10-02 | Shimano, Inc. | Low profile rear derailleur |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW448901U (en) | 2000-05-19 | 2001-08-01 | Nat Science Council | Velocity control device |
| US10053181B2 (en) * | 2012-05-30 | 2018-08-21 | Shimano Inc. | Bicycle shift operating device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2099961B (en) * | 1978-10-06 | 1983-05-25 | Shimano Industrial Co | Control lever for a cycle |
| JP2848842B2 (en) * | 1989-04-11 | 1999-01-20 | 株式会社シマノ | Gear lever for bicycle |
-
1994
- 1994-12-20 JP JP31623294A patent/JP3445852B2/en not_active Expired - Fee Related
-
1995
- 1995-01-28 TW TW84100841A patent/TW276229B/en active
- 1995-12-20 CN CN95120453A patent/CN1059396C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100457542C (en) * | 2004-08-31 | 2009-02-04 | 坎培诺洛有限公司 | Actuation device for a control cable for a bicycle gearshift, with rotatable support of the cable-winding bobbin |
| CN100427355C (en) * | 2005-05-19 | 2008-10-22 | 株式会社岛野 | Position control mechanism for bicycle control device |
| CN101704400A (en) * | 2006-02-28 | 2010-05-12 | 株式会社岛野 | Low outline rear derailleur |
| US8277346B2 (en) | 2006-02-28 | 2012-10-02 | Shimano, Inc. | Low profile rear derailleur |
| US9511820B2 (en) | 2006-02-28 | 2016-12-06 | Shimano, Inc. | Rear end structure for a bicycle frame |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3445852B2 (en) | 2003-09-08 |
| CN1059396C (en) | 2000-12-13 |
| JPH08169386A (en) | 1996-07-02 |
| TW276229B (en) | 1996-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106114738B (en) | Bicycle brake and shift operating device | |
| CN1064913C (en) | Speed changing operation device for bicycle | |
| CN100347038C (en) | Automatic shifting controller for bicycle | |
| CN100396556C (en) | Electric controller for speed variating mechanism of motor-driven bicycle | |
| CN1821015A (en) | Bicycle gear shifting control apparatus | |
| US20060058134A1 (en) | Gearshift control apparatus for a bicycle and a bicycle equipped with such apparatus | |
| EP0281567B1 (en) | Driving means of a bicycle brake, in particular a racing bicycle | |
| EP1391377A2 (en) | Electrical shift control device for a bicycle transmission | |
| JPH0924876A (en) | Handle bar of bicycle for competition | |
| US20030094064A1 (en) | Gear-change control device for a bicycle | |
| TW200911612A (en) | Control device for a derailleur of a bicycle | |
| CN1569554A (en) | Control device for a bicycle derailleur | |
| CN1111203A (en) | Apparatus for operating speed changing of bicycle | |
| CN1891563A (en) | Control device for a bicycle derailleur | |
| CN1621300A (en) | Bicycle control device | |
| US20070137390A1 (en) | Control device for a bicycle derailleur | |
| JP2523752Y2 (en) | Speed change lever device for bicycle | |
| CN1133807A (en) | Multi-speed operating device for bicycle | |
| CN1572653A (en) | Bicycle shift control device | |
| GB2028736A (en) | Back-pedal brade assemblies for bicycles | |
| KR0164274B1 (en) | Crank rod for cycle | |
| CN1133806A (en) | Multi-speed gear for bicycle | |
| EP1698551B1 (en) | Bicycle control apparatus | |
| CN205034288U (en) | Bicycle front derailleur | |
| ITTO950558A1 (en) | BRAKE LEVER SUPPORT DEVICE FOR COMPETITION BIKES |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20001213 Termination date: 20111220 |