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DE69503690D1 - Pulley unit for pedal vehicles with continuously variable transmission, provided with an automatic device to facilitate starting - Google Patents

Pulley unit for pedal vehicles with continuously variable transmission, provided with an automatic device to facilitate starting

Info

Publication number
DE69503690D1
DE69503690D1 DE69503690T DE69503690T DE69503690D1 DE 69503690 D1 DE69503690 D1 DE 69503690D1 DE 69503690 T DE69503690 T DE 69503690T DE 69503690 T DE69503690 T DE 69503690T DE 69503690 D1 DE69503690 D1 DE 69503690D1
Authority
DE
Germany
Prior art keywords
pulley unit
automatic device
drive pulley
gear
half pulleys
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.)
Expired - Fee Related
Application number
DE69503690T
Other languages
German (de)
Other versions
DE69503690T2 (en
Inventor
Piero Baldini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Piaggio and C SpA
Original Assignee
Piaggio Veicoli Europei SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Piaggio Veicoli Europei SpA filed Critical Piaggio Veicoli Europei SpA
Application granted granted Critical
Publication of DE69503690D1 publication Critical patent/DE69503690D1/en
Publication of DE69503690T2 publication Critical patent/DE69503690T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N3/00—Other muscle-operated starting apparatus
    • F02N3/04—Other muscle-operated starting apparatus having foot-actuated levers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

In pedal vehicles with stepless transmission, a drive pulley unit comprising an automatic device for facilitating starting, in which the drive pulley comprises a pair of half pulleys (12, 13) mounted on a shaft (11), the first (12) being axially fixed and the second (13) being axially movable relative to the first, between the two half pulleys there being positioned a drive belt (14) engaging against walls of the two half pulleys (12, 13), which depending on their distance apart determine low gear or high gear, associated with the drive pulley unit there being provided a gear position regulator consisting of a counteracting element (18) associated with the movable second half pulley (13) via radially movable rolling bodies (24) inserted in respective housings (19, 37), wherein to the counteracting element (18) there are connected radially oscillable centrifugal masses (20) which are associated with an elastic element (31) and interact with the rolling bodies (24) at low speeds to cause the half pulleys (12, 13) to assume a position of maximum approach, determining high gear. <IMAGE>
DE69503690T 1994-04-14 1995-03-24 Pulley unit for pedal vehicles with continuously variable transmission, provided with an automatic device to facilitate starting Expired - Fee Related DE69503690T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI940705A IT1270031B (en) 1994-04-14 1994-04-14 DRIVE PULLEY GROUP IN PEDAL VEHICLES WITH CONTINUOUS SPEED CHANGE WITH AUTOMATIC DEVICE TO FACILITATE STARTING

Publications (2)

Publication Number Publication Date
DE69503690D1 true DE69503690D1 (en) 1998-09-03
DE69503690T2 DE69503690T2 (en) 1999-03-18

Family

ID=11368578

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69503690T Expired - Fee Related DE69503690T2 (en) 1994-04-14 1995-03-24 Pulley unit for pedal vehicles with continuously variable transmission, provided with an automatic device to facilitate starting

Country Status (7)

Country Link
EP (1) EP0677657B1 (en)
CN (1) CN1057737C (en)
AT (1) ATE169089T1 (en)
DE (1) DE69503690T2 (en)
ES (1) ES2124491T3 (en)
IT (1) IT1270031B (en)
TW (1) TW254902B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3023892B1 (en) * 2014-07-17 2017-12-01 Skf Ab PULLEY DEVICE FOR CHAIN OR BELT
TWI570339B (en) * 2015-08-13 2017-02-11 三陽工業股份有限公司 Multi-mode Continuously Variable Transmission Mechanism
DE102017205514A1 (en) * 2017-03-31 2018-10-04 Robert Bosch Gmbh Pneumatically adjustable CVT transmission

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL105358C (en) * 1900-01-01
DE1001901B (en) * 1955-03-22 1957-01-31 Suedd Ilo Werk G M B H Speed-dependent regulating, continuously variable V-belt transmission, especially for motor vehicles
SE443426B (en) * 1983-07-25 1986-02-24 Dahlmans Klippo Ab REMOTE TRANSMISSION FOR A MOTOR POWER Mower
US4941863A (en) * 1988-03-28 1990-07-17 Kubota Ltd. Stepless speed change mechanism in belt transmission device
DE4121781A1 (en) * 1991-07-01 1993-01-21 Schubert & Salzer Maschinen GEARBOX FOR TEXTILE MACHINES, IN PARTICULAR TO PREVENT IMAGE WINDINGS WHEN FINDING THREADS

Also Published As

Publication number Publication date
EP0677657B1 (en) 1998-07-29
ES2124491T3 (en) 1999-02-01
IT1270031B (en) 1997-04-28
EP0677657A1 (en) 1995-10-18
DE69503690T2 (en) 1999-03-18
CN1121019A (en) 1996-04-24
ITMI940705A0 (en) 1994-04-14
CN1057737C (en) 2000-10-25
ITMI940705A1 (en) 1995-10-14
TW254902B (en) 1995-08-21
ATE169089T1 (en) 1998-08-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PIAGGIO & C. S.P.A., PONTEDERA, PISA, IT

8327 Change in the person/name/address of the patent owner

Owner name: MOD S.P.A., SONDRIO, IT

8327 Change in the person/name/address of the patent owner

Owner name: PIAGGIO & C. S.P.A., PONTEDERA, IT

8339 Ceased/non-payment of the annual fee