GB2134195A - Multi-ratio hub gear for a two- wheeled vehicle - Google Patents
Multi-ratio hub gear for a two- wheeled vehicle Download PDFInfo
- Publication number
- GB2134195A GB2134195A GB08401353A GB8401353A GB2134195A GB 2134195 A GB2134195 A GB 2134195A GB 08401353 A GB08401353 A GB 08401353A GB 8401353 A GB8401353 A GB 8401353A GB 2134195 A GB2134195 A GB 2134195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hub
- bearing position
- axially
- ring
- ofthe
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
- B62M11/16—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B5/00—Wheels, spokes, disc bodies, rims, hubs, wholly or predominantly made of non-metallic material
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Structure Of Transmissions (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
The multi-ratio hub for a two- wheeled vehicle comprises a hub spindle (1) on which a driver (5) provided with a chain wheel (21) is rotatably mounted at a first bearing position (3). A hub sleeve (7) is rotatably mounted at a second bearing position (9) on the driver (5) and at a third bearing position (11) on the hub spindle (1). The hub sleeve (7) and the driver (5) encompass a planet gear (51) which comprises an externally toothed sun wheel (53), an internally toothed hollow wheel (55) and a planet wheel carrier (59) with at least one planet wheel (63) rotatably mounted thereon. A control element (87) displaceable axially in relation to the hub spindle (1) is axially displaceable manually from outside the hub by means of an actuating device (97, 99, 111). The control element (87) is coupled with the actuating device so as to permit a relative rotation between the control element (87) and the actuating device (97, 99, 111). The control element (87) is in operative connection with coupling elements (77) for control of the gear ratio through at least one aperture (15) of the driver (5) provided radially outside the first bearing position (3) Figure 1. <IMAGE>
Description
SPECIFICATION
Multi-ratio hub gear for a two-wheeled vehicle
The invention relates to a multi-ratio hubgearfora two-wheeled vehicle, especially a bicycle.
From Fed. German Pub. Sp. No. 29 40 841 a multi-ratio hub for a cycle is known on the hub spindle ofwhich a driver with several chain wheels is mounted rotatably at a first bearing position. A hub sleeve provided with spokeflanges is mounted rotatably at a second bearing position on the driver and at a third bearing position on the hub spindle. The hub sleeve and the driver cover off a planetary gearwhich comprises an externally toothed sun wheel connected fast in rotation with the hub spindle, a hollowwheel connected fast in rotation with the driver and a planet wheel carrier with several planet wheels rotatably mounted thereon. Both the planetwheel carrier and the hub sleeve carry pawltoothingsconcentricwith the hub spindle, in which pawls mounted on an axially displaceable pawl carrier engage under resilient initial stress.By means of a control flank on the planet wheel carrierthe pawls of the ratchet on the planetwheel carrier side can be shifted to be inoperative due to the axial displacement ofthe pawl carrier. In this way the hub sleeve can be coupled either with the driver or with the planet wheel carrier.
The pawl carrier of the known multi-ratio hub is shifted buy a draw member guided in the hub spindle.
This type of ratio control requires a relatively complicated configuration of the hub spindle and of the two ratchets. Furthermore the assembly expense of such hubs is comparatively high.
It isthe problem ofthe invention to simplifythe design ofthe hub and especially its parts necessary for gear-changing, and to facilitate the assembly ofthe hub.
In the multi-ratio hub according to the invention the driver carrying the chain wheel is again mounted rotatably at a first bearing position on the hub spindle ora partfirmly connected with the hub spindle, while the hub sleeve for its part is mounted at a second bearing position on the driver and at a third bearing position on the hub spindle. The gear elements ofthe planet gear are shifted by coupling elements into the drive path between the driver and the hub sleeve. For the control ofthe coupling elements a shift element is provided which can be displaced axially by means of an actuating device operable manuallyfrom outside the hub.In this case the shift element is coupled with the actuating devicethrough an axial bearing position arranged on the side of the first bearing position axially remotefrom the third bearing position and is in operative connection, through at least one aperture of the driver, with the coupling elements. The axial bearing position permits a relative rotation between the shift element and the actuating device. In such a bearing position the components which determine the controlling of the planet gear are arranged axially outside the bearing positions which carrythe hub sleeve on the hub spindle. Thusthey can be fitted after the assembling ofthe planet gear, the hub sleeve, the driver and the hub spindle, which facilitates the assemblyofthe multi-ratio hub. Moreover solid hub spindles of comparatively simple configuration can be used.
In preferred forms of embodimentthe shift element directly controls the pawls of a pawl ratchet acting between the driver and the hub sleeve. In this case the pawls are seated on the driver, so that they can be shifted by axial displacement of the preferably annular control element rotating together with the driver.
Inafurther preferred form of embodimentthe actuating device comprises for the axial displacement of the control element two thrust rings provided with complementary th rust faces lying against one another, of which the axiallyouterthrust ring, mounted rotatably on the hub spindle, can be rotated manuallyforexamplethrough a draw cable, and in this rotation axially displaces the axially innerthrust ring acting upon the shift element. Forthis purpose the innerthrust ring is guided fast in rotation but axially displaceably on the hub spindle or a part firmly connected with the hub spindle.
An example of embodiment oftheSverfion is to be explained in greater detail below itch reference to drawings, wherein:- FIGURE 1 shows the upper half of an axial longitudinal section through a two-speed cycle hub;
FIGURE 2 shows a partial axially longitudinally sectional representation of a driver ofthe two-speed hub according to Figure 1;
FIGURE 3 shows a diagrammatic plan view ofa chain wheel ofthe two-speed hub according to Figure 1;
FIGURE 4 shows a sectional view of a shift ring used in the two-speed hub according to Figure 1, seen along a line IV-IVin Figure 5, and
FIGURE 5 shows a plan view ofthe shift ring according to Figure 4.
The two-speed cycle hub comprises a hub spindle 1 consisting of solid material and notdrilledthrough axially, on which a driver 5 enclosing the hub spindle 1 is rotatably mounted by means of a first ball bearing 3.
A hub sleeve 7 enclosing both the hub spindle 1 and the driver 5 too is rotatably mounted on the driver in the region of its one end through a ball bearing 9and on the hub spindle 1 in the region of its other end through a ball bearing 11. In this case the ball bearing 9 is arranged axially between the ball bearings 3 and 11.
On its side of the ball bearing 3 remote from the ball bearing 9the driver 5 carries a substantially axially proceeding tubular extension 13which containstwo diametrically opposite, radiallythrough-passing slots 15 which extend as far as the end face of the tubular extension 13. On the tubular extension 13, clamped in between an axial shoulder 17 and a fastening element 19, there is seated a chain wheel 21 which, as shown best by Figure3, carries on its internal circumference two diametrically opposite noses 23 which engage in the slots 15 ofthe driver5 and hold the chain wheel 21 fast in rotation on the driverS. The hub sleeve is made for preference as a light metal die-casting and carries
This print takes account of replacement documents submitted after the date of filing to enable
the application to comply with the formal requirements of the Patents Rules 1982.
spoke flanges 25,27 in the region of its ends. The spokeflange 25 on the driverside is cast integrally on the hub sleeve 7, while the spoke flange 27 is attached subsequently.
The hub spindle 1 is made substantially smooth
surfaced, that iswithout majorjumps of diameter, and
is provided with an external threading 29 and 31 in the
region of each of its two ends. Bearing cones 33 and
35, directed towards one another, ofthe two ball bearings 3 and 11 1 are screwed on to the external threadings 29 and 31, which cones axially fix on the
hub spindle 1 the driver5 and the hub sleeve 7 which is supported on the driver 5 both radially and axially through the ball bearing 9. The part of the hub sleeve 7 covering the driver 5 has a considerably larger diameterthan the part adjacent to the ball bearing 11.
The ball bearing 9 is arranged in the region ofthe shoulder which provides the enlargement of diameter ofthe hub sleeve 7 and comprises a bearing shell 37, for example of sheet steel orthe like, pressed fast in rotation into the hub sleeve. The ball bearing 11 at the end of the hub sleeve 7 remote from the driver comprises a bearing shell 39 of sheet steel orthe like pressed fast in rotation into the hub sleeve 7 and protruding radially beyond the axial end face of the hub sleeve 7 with a radially outwardly projecting collar 41. On the protruding colla r 41 there is secured an annular dust cap 43 of synthetic plastics material or the likewhich seals offthe ball bearing 11 to the exterior.A likewise annular dust cap 45 bridges over the annular gap remaining between the chain wheel 21 and the axial end ofthe hub sleeve 7 on the driver side. Lock nuts 47,49 screwed on to thethreadings 29, 31 ofthe hub spindle 1 secure the adjustment of the bearing cones 33,35.
The hub sleeve 7 and the driver 5 cover over a planet gear designated in general by 51. The planet gear comprises a sun wheel toothing 53 on a part ofthe driver-side bearing cone 33 protruding axially to between the ball bearings 3 and 11, a hollow wheel toothing 55, lying radially opposite to the sun wheel toothing 53, on the driver and a planet wheel carrier 59 rotatably mounted on a bearing surface 57 ofthe hub spindle 1 between the two bearing cones 33,35, from the side of which carrier axially facing the driver 5 bearing journals 61 protrude in the axial direction of the hub spindle 1. Planetwheels 63 meshing with the sun wheel toothing 53 and the hollow wheel toothing 55 are mounted rotatably on the bearing journals 61.A ring cage 65, for example of synthetic plastics material, holds the planet wheels 63 on the planet wheel carrier 59.
Afirst pawl ratchet 67 is effective between the planet wheel carrier 59 and the hub sleeve. The ratchet 67 comprises a pawl carrier 69 pressed fast in rotation into the hub sleeve 7, on which at least one pawl, but preferably several pawls 71, is or are pivotably mounted about a pivot axis or pivot axes parallel to the hub spindle 1. The pawl 71 engages in a radially opposite pawl toothing 73 ofthe planet wheel carrier 59 and is held in engagement with the pawl toothing 73 under initial spring stress by an annular spring 75 in the usual manner. A second ratchet 77 is further able to couple the hub sleeve 7 with the driver 5. The ratchet 77 in the present case comprises two pawls 79
which are mounted on the driver 5 pivotably about
pivot axes parallel to the hub spindle 1.Radially
oppositelyto the pawls 79 an engaging ring 81 with an internal pawl toothing 83 is pressed fast in rotation
into the hub sleeve 7. An annular spring 85 holds the
pawls 79 under initial spring stress in engagement with the pawl toothing 83.
The pawls 79 of the ratchet 77 are controllable, as will be described below, and determine the gear setting of the two-speed hub, according to whether they engage in the pawl toothing 83 or are held out of engagement. Forthecontrolling ofthe ratchet 77 a control ring 87, represented in greater detail in Figures 4 and 5, is provided. The control ring 87 is arranged within thetubular extension 13 ofthe driver 5 to the side of the ball bearing 3 axially remote from the ball bearing 11 and axially displaceably encloses the bearing cone 33 ofthe ball bearing 3.The control ring 87 diametrically oppositely carries two substantially radially protruding control arms 89, each ofwhich engages through one ofthetwo slots 15 ofthe tubular extension 13 axially between the ratchet 77 and the chain wheel 21. The control arms 89 attheir ends form ramps 91 which co-operate with a control part 93 on eachofthetwo pawls 79 in the axial displacement of the control ring 87 and liftthe associated control pawl 79 in each case outofthe pawl toothing 83.
A helical compression spring 95 stressed in between the driver 5 and the control ring 87 and enclosing the bearing cone 33 pressesthe control ring 87 axially awayfrom the ratchet 77 into a position in which the control arms 89 can cause the pawls 79to engage freely in the pawl toothing 83.
The two-speed hub can be actuated manually through an actuating device. Forthis purpose two thrust rings 97 and 99 enclosing the bearing cone 33 are provided on the side ofthe control ring 87 axially remote from the ball bearing 3. The thrust rings 97,99 carry axial th rust faces 101 and 103 respectively, rising in the peripheral direction, through which they are axially supported on one another. The thrust ring 97 placed remote from the control ring 87 is mounted rotatably on the bearing cone 33 and axially fixed on the side axially remote from the thrust ring 99 by a securing ring 105. The thrust ring 99 is guided axially displaceably on the bearing cone 33 and held fast in rotation in relation to the hub spindle 1 by means of a nose 109 engaging in an axial groove 107 of the bearing cone 33.The thrust ring 99 rests in sliding manner on the control ring 87 and togetherwith the control ring 87 forms an axial bearing which permits a rotation ofthe control ring 87, which rotates together with the driver 5, in relation to the non-rotating thrust ring 99. A radially projecting lever part 111 is removably held on the thrust ring 97 on the axially outer side of the chain wheel 21, to which lever part a draw cable 113 leading to a gear change.lever orthe like is hooked at a distance from the thrust ring 97. An annular spring 115 enclosing the bearing cone 33 is arranged between the thrust rings 97,99, the ends of which spring are coupled with the thrust rings 97,99 and initially stress the rotatable thrust ring 97 against a stop (not illustrated further) fastwith the hub spindle.
The stop is so arranged thatthethrust ring 99 is situated in its position closestto the thrust ring 97 when the thrust ring 97 rests on the stop. The helical compression spring 95 presses the thrust ring 99 against the thrust ring 97, through the control ring 87.
If the lever part 111 is rotated by pulling on the draw cable 11 3, then the thrust ring 99 and thus the control ring 87 are displaced axially towards the driver and the control arms 89 of the control ring 87 liftthe pawls 79 out of the pawl toothing 83. If the draw cable 113 is released the annular spring 115 rotates the thrust ring 97 back into its rest position and the helical compression spring 95 liberates the pawls 79 again.
Figure 1 shows the two-speed hub in the direct gear in which the ratchet77 is engaged and couplesthe driver 5 directly with the hub sleeve 7. The drive torque path proceeds from the chain wheel 21 byway ofthe driver 5, the pawls 79, the pawl toothing 83 to the hub sleeve 7. The planet wheel carrier 59 is driven through the planetwheels 63 and rotates at a lower rate than the driver 5. In this case the pawls 71 overrun the pawl toothing 73. Due to tension loading of the draw cable 113 the control ring 87 is displaced to the left in Figure 1, wherebythe pawls 79 are held out of the pawl toothing 83. Now the torque path proceeds from the chain wheel 21 by way ofthe driverS, the planet wheel carrier 59 and the pawls 71 to the hub sleeve 7.The two-speed hub is being driven in the hill-climbing gear, that is the drive-input rotation speed ofthe chain wheel 21 is stepped down and the hub sleeve 7 rotates at lower rotation rate than the chain wheel 21.
The lever part 111 is preferablyformed as a cable pulley having a cable guide groove on its circumferenceforthe draw cable 113. The lever part 111 annularly encloses the thrust ring 97, its internal diameter being less than the radial distance between the noses 23 of the chain wheel 21. In this way, when the lever part 111 is removed the chain wheel can likewise be removed, which facilitates the assembly of the two-speed hub and especiallythe fitting of the spokestothe hub. The lever part 111 1 andthethrust ring 97 are connected fast in rotation with one another in positive shape-engaging mannerthrough a plural ity of complementary detent elements 117. The detent elements 117 are distributed in the circumferential direction ofthethrust ring 97 and of the lever part 111 in such a way that the lever part 111 can be secured according to choice in one of several angular positions on the thrust ring 97. In this way the basic position of the lever part 111 in relation to the basic position ofthe thrust ring 97 can be adapted to the installation conditions on the cycle, for example to the manner of guidance and the length ofthe draw cable 113.
Claims (12)
1. Multi-ratio hub for a two-wheeled vehicle, especially a bicycle, comprising
a) a hub spindle (1), b) a driver(5) mounted rotatably on the hub spindle (1) at a first bearing position (3), with at least one chain wheel (21),
(c) a hub sleeve (7) which is mounted rotatably on the driver (5) at a second bearing position (9) and on the hub spindle (1) at a third bearing position (11),
d) a planet gear (51) covered by the hub sleeve (7) and the driver (5) and comprising an externally toothed sun wheel (53), an internally toothed hollow wheel (55) and a planet wheel carrier (59) having at least one planet wheel (63) rotatably mounted thereon for engagement with the sun wheel (53) and the hollow wheel (55), one of these gearing elements (53) being held fast in rotation on the hub spindle (1) and the othertwo gearing elements (55,59) being rotatable aboutthe hub spindle (1) and one ofthetwo gearing elements (55) rotatable about the hub spindle (1) being in drive connection with the driver (5),
e) shiftable coupling elements (67,77) covered by the hub sleeve (7) and the driver (5), for the coupling of the hub sleeve (7) according to choice with one in each case ofthetwo gearing elements(55,59) which are rotatable about the hub spindle (1),
f) a control element (87) displaceable axially in relation tothe hub spindle (1) and shifting the coupling elements (67,77), and
g) an actuating device (97,99,111) operable manually from outside the hubforthe axial displacement ofthe control element (87), characterised in that the control element (87) is displaceable with the actuating device (97,99,111) by means of an axial bearing position arranged on the side ofthe first bearing position (3) axially remote from the third bearing position (11) and permitting a relative rotation between the control element (87) and the actuating device (97,99, 111) about the hub spindle (1), and in that the control element (87) is in operative connection with the coupling elements (67,77) through at least one aperture (15) of the driver (5) provided radially outside the first bearing position (3).
2. Multi-ratio hub according to Claim 1,characterised in that the coupling elements comprise a (first) pawl ratchet (77) in the drive path between the driver (5) and the hub sleeve (7), which ratchet comprises a pawl toothing (83) concentric with the hub spindle (1) and at least one pawl (79) resiliently initially stressed in the direction of engagement and mounted pivot ablyon the driver (5), and in thatthe control element (87) in afirstaxial position holds each ofthe pawls (79) out ofthe pawl toothing (83) and in a second position liberatesthe pawlsto engage inthe pawltoothing (83).
3. Multi-ratio hub according to Claim 2, characterised in thatthe control element is formed as a control ring (87) which rotatably encloses the hub spindle (1) and is arranged in atubularextension (13) ofthe driver (5) carrying the chain wheel (21), on the side of the first bearing position (3) axially remote from the third bearing position (11), and in that the control ring (87) carries a control arm (89) for each of the pawls (79) of the first ratchet (77), which arm passes through an aperture (15), allocated to it, ofthe tubular extension (13).
4. Multi-ratio hub according to Claim 3, characterised inthatthecontrol ring (87)togetherwith an axially displaceable ring (99) enclosing the hub spindle (1) forms the axial bearing position.
5. Multi-ratio hub according to Claim 2, characterised inthatthe second bearing position (9) is arranged axially between the first bearing position (3) and the third (11) and the first ratchet (77) is arranged on the side ofthe second bearing position (9) axially remote from the third bearing position (11).
6. Multi-ratio hub according to one of the preceding Claims, characterised in that the coupling ele
ments comprise a (second) ratchet (67) in the drive
path between the planet wheel carrier (59) and the hub
sleeve (7), comprising a pawl toothing (73) concentric
with the hub spindle (1) and at least one pawl (71)
initially resiliently stressed in the direction of engage
ment.
7. Multi-ratio hub according to Claim 6, characte
rised in that the pawl toothing (73) of the second
ratchet (67) is provided on the planetwheel carrier (59) and in that an engaging ring (69) carrying the pawl (71) ofthe second ratchet (67) is secured fast in rotation on the hub sleeve (7).
8. Multi-ratio hub according to one of the preceding Claims, characterised in that two mutually relatively rotatable, complementarythrust rings (97,99) enclosing the hub spindle (1) are arranged on the side ofthe axial bearing position axially remote from the first bearing position (3), at least one of which thrust rings has a thrust face rising axially in the circumferen- tial direction which lies against a counter-face ofthe otherthrust ring and in the relative rotation of the thrust rings (97,99) moves these axially away from one another, in that the firstthrust ring (97) axially remote from the axial bearing position is axially fixed and rotatable by means ofthe actuating device (111) and in thatthe second thrust ring (99) axially adjacent to the axial bearing position is guided fast in rotation in relation to the hub spindle (1).
9. Multi-ratio hub according to Claim 8, characterised in that the second thrust ring (99) rests in rotatably sliding manner on the control element (87) to form the axial bearing position and in that on the side ofthe control element (87) axially remote from the second thrust ring (99) there is arranged a compression spring (95) which initially stresses the control element (87) axially against the second thrust ring (99) and at the same time the second thrust ring (99) axially againstthe firstthrust ring (97).
10. Multi-ratio hub according to Claim 8, characte rised in thatthe firstthrust ring (97) carries fast in rotation a lever part (111) enclosing the hub spindle (1) and in that on thefirstthrust ring (97) and the lever part (111) there are provided mutually complementary, axially engageable coupling elements (117) by means of which the lever part (111) can be connected in shape-engaging positive manner with the first thrust ring (97) in one of several positions offset in angle in relation to the first thrust ring (97) according to choice.
11. Multi-ratio hub according to one ofthe preceding Claims, characterised in thatthefirst bearing position informed as a ball bearing (3) with a bearing cone (33) securablefast in rotation on the hub spindle (1) and in thatthe bearing cone (33) reaches axially between the first bearing position (3) and the third (1 1 ) and here carries a sun wheel toothing (53) ofthe planet gear (51).
12. Multi-ratio hub gear substantially as described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833302654 DE3302654A1 (en) | 1983-01-27 | 1983-01-27 | MULTI-SPEED HUB FOR BICYCLES OD. DGL. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8401353D0 GB8401353D0 (en) | 1984-02-22 |
| GB2134195A true GB2134195A (en) | 1984-08-08 |
Family
ID=6189330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08401353A Withdrawn GB2134195A (en) | 1983-01-27 | 1984-01-19 | Multi-ratio hub gear for a two- wheeled vehicle |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS59140191A (en) |
| KR (1) | KR840007212A (en) |
| DE (1) | DE3302654A1 (en) |
| GB (1) | GB2134195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6558288B2 (en) * | 2001-05-18 | 2003-05-06 | Shimano, Inc. | Internal transmission device with automatic shift mechanism for a bicycle |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3423756B2 (en) * | 1993-12-16 | 2003-07-07 | 株式会社シマノ | Operation structure of bicycle motion device |
| TWI236445B (en) * | 2003-10-21 | 2005-07-21 | Sun Race Sturmey Archer Inc | Transmission hub structure of bicycle for rotary gear shift |
| DE102004011051A1 (en) * | 2004-03-06 | 2005-09-22 | Sram Deutschland Gmbh | Control device operated in a rotary manner from outside of a hub sleeve for the center of a wheel for a bicycle comprises a switching sleeve, switching elements and switching rings for controlling ratchets |
| JP4889122B2 (en) * | 2007-09-14 | 2012-03-07 | イビデンエンジニアリング株式会社 | Substrate suction transfer device |
-
1983
- 1983-01-27 DE DE19833302654 patent/DE3302654A1/en not_active Withdrawn
-
1984
- 1984-01-19 GB GB08401353A patent/GB2134195A/en not_active Withdrawn
- 1984-01-20 KR KR1019840000241A patent/KR840007212A/en not_active Application Discontinuation
- 1984-01-26 JP JP59011144A patent/JPS59140191A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6558288B2 (en) * | 2001-05-18 | 2003-05-06 | Shimano, Inc. | Internal transmission device with automatic shift mechanism for a bicycle |
| CZ303289B6 (en) * | 2001-05-18 | 2012-07-18 | Shimano Inc. | Bicycle internal transmission device and method of power transmission in such a device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR840007212A (en) | 1984-12-06 |
| GB8401353D0 (en) | 1984-02-22 |
| DE3302654A1 (en) | 1984-08-02 |
| JPS59140191A (en) | 1984-08-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |