SE419960B - DEVICE FOR VARYING THE PEDAL TISSUE LENGTH OF A CYCLE - Google Patents
DEVICE FOR VARYING THE PEDAL TISSUE LENGTH OF A CYCLEInfo
- Publication number
- SE419960B SE419960B SE7910658A SE7910658A SE419960B SE 419960 B SE419960 B SE 419960B SE 7910658 A SE7910658 A SE 7910658A SE 7910658 A SE7910658 A SE 7910658A SE 419960 B SE419960 B SE 419960B
- Authority
- SE
- Sweden
- Prior art keywords
- pedal
- shaft
- crank arm
- rotatable
- crank pin
- Prior art date
Links
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
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/02—Construction of cranks operated by hand or foot of adjustable length
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Mechanical Control Devices (AREA)
- Transmission Devices (AREA)
- Automatic Cycles, And Cycles In General (AREA)
- Luminescent Compositions (AREA)
- Dental Preparations (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
7910658-9 Fig. 2 visar en del av vevarmen i vy framifrån. 7910658-9 Fig. 2 shows a part of the crank arm in front view.
Fig. 3 visar ett snitt efter linjen III - III i fig. 1.Fig. 3 shows a section along the line III - III in Fig. 1.
Beskrivning_av utföringsexempel På ritningen betecknas med ll en cykelpedal, med 12 en vevarm och med 13 en pedalaxel. Denna är utformad som en vevaxel med en längre axeltapp 14 och en excentrisk i för- hållande till denna anordnad kortare axeltapp 15. Den långa axeltappen lä är via rullningslager 16 roterbart lagrad i en borrning 17 i pedalen ll. På pedalaxeln 13 är anordnat ett frinav 18, som omges av en bussning 19, vilken vid ena änden är försedd med utskärningar 20, vilka samverkar med i pedalhuset ll fast anordnade klackar 21. Som framgår av fig. 3 är utskärningarna 20 så stora att hylsan kan vridas ca 70° mot verkan av en fjäder 22, vars ena ände är förbunden med hylsan 19, medan motsatta änden är förbunden med pedalen ll. Frinavet 18 är så utformat att detta tillåter fri rota- tion av pedalaxeln i en rotationsriktning medan i motsatt riktning pedalaxeln 13 fastlåses i förhållande till buss- ningen 19.Description_of embodiment In the drawing, ll denotes a bicycle pedal, with 12 one crank hot and with 13 a pedal shaft. This is designed as one crankshaft with a longer shaft journal 14 and an eccentric in front holding to this arranged shorter shaft journal 15. The long one the shaft journal lä is rotatably mounted in via roller bearings 16 a bore 17 in the pedal ll. On the pedal shaft 13 is arranged a free end 18, which is surrounded by a bushing 19, which at one the end is provided with cut-outs 20, which cooperate with i the pedal housing 11 fixedly mounted lugs 21. As can be seen from fig. 3, the cut-outs 20 are so large that the sleeve can be turned approx 70 ° against the action of a spring 22, one end of which is connected with the sleeve 19, while the opposite end is connected to the pedal ll. The free hub 18 is designed to allow free rotation. tion of the pedal shaft in one direction of rotation while in the opposite direction the pedal shaft 13 is locked in relation to the bus 19.
Pedalaxelns 13 kortare axeltapp 15 är som sagt excentriskt anordnad relativt den längre axeltappen 14, varvid excentri- citeten lämpligen uppgår till mellan 6-10 mm. Vevarmen 12 är medelst en glidlagring 25 roterbart lagrad på axel- tappen 15 och fixerad till denna medelst en mutter 2ü. I vevarmen 12 är inbyggd ett fjäderbelastat vridmotstånd 25 innefattande en kula 26, som av en fjäder 2? pressas mot axeltappen 15 och samverkar med på dess mantelyta anord- nade fördjupningar 28. I Kraften hos fjädern 27 är så vald, att ett tillräckligt stort vridmotstånd erhålles för att axeltappen 15 skall kvarhållas i sin valda position relativt vevarmen 12.The shorter shaft pin 15 of the pedal shaft 13 is, as stated, eccentric arranged relative to the longer shaft pin 14, the eccentric the density suitably amounts to between 6-10 mm. The crank arm 12 is rotatably mounted on a shaft by means of a sliding bearing 25 pin 15 and fixed to it by means of a nut 2ü. IN the crank arm 12 is built into a spring-loaded rotary resistor 25 comprising a ball 26, as of a spring 2? pressed against the shaft journal 15 and cooperates with devices arranged on its mantle surface. specializations 28. I The force of the spring 27 is so selected that a sufficient large torsional resistance is obtained for the shaft journal 15 to held in its selected position relative to the crank arm 12.
Vid cykling, d.v.s. när vevarmen 12 bringas att utföra en rotationsrörelse medurs, kommer axeltappen lü att 7910658-9 rotera kring pedalen ll, medan axeltappen 15 står stilla relativt vevarmen 12. Trampas däremot pedalveven bakåt, dvs i motsatt rotationsriktning, kommer frinavet att låsa axeltappen lü till bussningen 19, varvid vid fortsatt rörelse bakåt pedalaxeln 13 kommer att vridas kring axel- tappen 15 mot verkan av vridmotståndet 25, tills kulan 26 har snäppt in i nästa urtagning 28 på axeltappens 15 mantelyta.When cycling, i.e. when the crank arm 12 is caused to perform a clockwise rotational movement, the shaft journal lü will 7910658-9 rotate around the pedal 11 while the shaft journal 15 is stationary relative to the crank arm 12. On the other hand, the pedal crank is stepped back, ie in the opposite direction of rotation, the freewheel will lock the shaft pin lü to the bushing 19, whereby at continued movement backwards the pedal shaft 13 will be rotated about the shaft the pin 15 against the action of the torsional resistance 25, until the ball 26 has snapped into the next recess 28 on the shaft journal 15 mantelyta.
För att inte oönskade omställningar av pedalveven uppstår vid mindre bakåttramp är frinavet 18 anordnad í sagda bussning 19, som är begränsad vridbar i pedalen ll.In order that unwanted adjustments of the pedal crank do not occur in the case of minor backward trampling, the freewheel 18 is arranged in said bushing 19, which is limited rotatable in the pedal 11.
När pedalen släppes eller vevarmen 12 roteras medurs, kommer fjädern 22 att vrida bussningen 19 tillbaka till sitt utgångsläge, så att vid nästa bakåtrörelse hos vevanmen en ny omställning av vevarmen relativt axel- tappen 15 kan ske.When the pedal is released or the crank arm 12 is rotated clockwise, the spring 22 will turn the bushing 19 back to its starting position, so that at the next backward movement of crank arm a new adjustment of the crank arm relative to the shaft pin 15 can be made.
Med anordningen enligt uppfinningen kan exempelvis vev- armens längd förändras så att i ett läge en vevlängd på 165 mm erhålles, i ett andra läge en vevlängd på 170 mm, i ett tredje läge en vevlängd på 175 mm och i ett fjärde läge en vevlängd på 180 mm. Vid fortsatt bakåt-trampning kommer excentrisiteten att åter minska tills det första utgångsläget har uppnåtts.With the device according to the invention, for example, the length of the arm changes so that in one position a crank length of 165 mm is obtained, in a second position a crank length of 170 mm, in a third position a crank length of 175 mm and in a fourth position a crank length of 180 mm. In case of continued backward trampling the eccentricity will decrease again until the first the initial position has been reached.
Uppfinníngen är icke begränsad till den visade utförings- formen utan ett flertal variationer är tänkbara inom ramen för patentkraven.The invention is not limited to the embodiment shown. the form without a number of variations is conceivable within framework of the claims.
Claims (2)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7910658A SE419960B (en) | 1979-12-27 | 1979-12-27 | DEVICE FOR VARYING THE PEDAL TISSUE LENGTH OF A CYCLE |
EP80201226A EP0031627B1 (en) | 1979-12-27 | 1980-12-22 | Pedal crank for bicycles |
DE8080201226T DE3070724D1 (en) | 1979-12-27 | 1980-12-22 | Pedal crank for bicycles |
AT80201226T ATE13504T1 (en) | 1979-12-27 | 1980-12-22 | PEDAL CRANK FOR BICYCLES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7910658A SE419960B (en) | 1979-12-27 | 1979-12-27 | DEVICE FOR VARYING THE PEDAL TISSUE LENGTH OF A CYCLE |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7910658L SE7910658L (en) | 1981-06-28 |
SE419960B true SE419960B (en) | 1981-09-07 |
Family
ID=20339637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7910658A SE419960B (en) | 1979-12-27 | 1979-12-27 | DEVICE FOR VARYING THE PEDAL TISSUE LENGTH OF A CYCLE |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0031627B1 (en) |
AT (1) | ATE13504T1 (en) |
DE (1) | DE3070724D1 (en) |
SE (1) | SE419960B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2684635B3 (en) * | 1991-12-09 | 1994-02-04 | Tranvoiz Rene | DEVICE FOR MOUNTING A PEDAL AXLE ON A CRANK ARM APPLICABLE IN PARTICULAR TO CYCLES OR A ROLLING OBJECT. |
AU1380395A (en) | 1993-12-14 | 1995-07-03 | Trimatic Radtechnik Gmbh | Pedal crank arm length adjustment device |
DE4404796C2 (en) * | 1993-12-14 | 1995-10-05 | Trimatic Radtechnik Gmbh | Device for adjusting the crank arm length |
AT412638B (en) * | 2001-06-28 | 2005-05-25 | Lintl Josef | LENGTH ADJUSTABLE BICYCLE FRAME |
US8117944B2 (en) * | 2007-01-09 | 2012-02-21 | Nikola Stevovich | Pedal apparatus |
WO2014145589A2 (en) | 2013-03-15 | 2014-09-18 | Nikola Stevovich | Pedal assembly, apparatus for determining a pedal configuration and methods thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR824430A (en) * | 1937-07-15 | 1938-02-08 | Peugeot Cycles | Adjustable crankset |
US4183262A (en) * | 1975-08-01 | 1980-01-15 | Shimano Industrial Company Limited | Gear crank for a bicycle |
US4331043A (en) * | 1979-05-10 | 1982-05-25 | Shimano Industrial Company, Limited | Gear crank for a bicycle |
-
1979
- 1979-12-27 SE SE7910658A patent/SE419960B/en unknown
-
1980
- 1980-12-22 AT AT80201226T patent/ATE13504T1/en active
- 1980-12-22 EP EP80201226A patent/EP0031627B1/en not_active Expired
- 1980-12-22 DE DE8080201226T patent/DE3070724D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0031627B1 (en) | 1985-05-29 |
ATE13504T1 (en) | 1985-06-15 |
DE3070724D1 (en) | 1985-07-04 |
SE7910658L (en) | 1981-06-28 |
EP0031627A2 (en) | 1981-07-08 |
EP0031627A3 (en) | 1982-06-23 |
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