GB2033982B - Manual gear shift mechanisms - Google Patents

Manual gear shift mechanisms

Info

Publication number
GB2033982B
GB2033982B GB7932759A GB7932759A GB2033982B GB 2033982 B GB2033982 B GB 2033982B GB 7932759 A GB7932759 A GB 7932759A GB 7932759 A GB7932759 A GB 7932759A GB 2033982 B GB2033982 B GB 2033982B
Authority
GB
United Kingdom
Prior art keywords
recesses
shift
lever
gear lever
gear
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
Application number
GB7932759A
Other versions
GB2033982A (en
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Publication of GB2033982A publication Critical patent/GB2033982A/en
Application granted granted Critical
Publication of GB2033982B publication Critical patent/GB2033982B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/18—Preventing unintentional or unsafe shift, e.g. preventing manual shift from highest gear to reverse gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/24—Providing feel, e.g. to enable selection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
    • F16H63/20—Multiple final output mechanisms being moved by a single common final actuating mechanism with preselection and subsequent movement of each final output mechanism by movement of the final actuating mechanism in two different ways, e.g. guided by a shift gate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H2059/048—Ratio selector apparatus with means for unlocking select or shift movement to allow access to reverse gear position

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)

Abstract

A gear shift mechanism fore change-speed gearbox is operable by a gear lever 8, and includes two juxtaposed shift forks 6A, 6B and a mechanism for inhibiting simultaneous actuation of the shift forks. The gear lever is selectively engaged with one of the recesses 6a, 6b in either shift fork in order to effect gear changing. These recesses are mutually opposed, when in the neutral position of the mechanism, and have a common zone 10 which bridges the recesses in the region of the bottoms of the recesses and which is so shaped as to prevent rocking of the lever, when the latter is engaged therewith, to select one of the recesses 6a, 6b. A spring 12 urges the gear lever into engagement with the common zone 10 when the shift forks are in the neutral position. In order to shift the gear lever into engagement with only one of the shift fork recesses 6a or 6b, it is first necessary to lift the gear lever from the common zone 10 against the action of the spring 12. Hence, when the shift mechanism is in neutral and the gear lever is engaged with the common zone, accidental or unintentional actuation of the lever is inhibited. <IMAGE>
GB7932759A 1978-10-12 1979-09-21 Manual gear shift mechanisms Expired GB2033982B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14141878U JPS5556725U (en) 1978-10-12 1978-10-12

Publications (2)

Publication Number Publication Date
GB2033982A GB2033982A (en) 1980-05-29
GB2033982B true GB2033982B (en) 1982-10-13

Family

ID=15291537

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7932759A Expired GB2033982B (en) 1978-10-12 1979-09-21 Manual gear shift mechanisms

Country Status (5)

Country Link
JP (1) JPS5556725U (en)
CA (1) CA1132032A (en)
DE (1) DE2940129C2 (en)
FR (1) FR2438868B1 (en)
GB (1) GB2033982B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58154023A (en) * 1982-03-09 1983-09-13 Nissan Motor Co Ltd Vibration insulating device of variable speed controlling lever
JPS59120630U (en) * 1983-02-04 1984-08-14 アイシン精機株式会社 Transmission breather mechanism

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE356143A (en) * 1928-09-19
US1899332A (en) * 1929-07-01 1933-02-28 Reo Motor Car Co Gear shifting mechanism
US1831195A (en) * 1929-08-13 1931-11-10 Caterpillar Tractor Co Transmission
US1830797A (en) * 1930-06-27 1931-11-10 Clark Equipment Co Transmission
GB783332A (en) * 1952-05-16 1957-09-25 Massey Harris Ferguson Ltd Improvements in or relating to change speed gear boxes especially for tractors
NL95642C (en) * 1954-12-24
DE1254980B (en) * 1961-01-24 1967-11-23 Kloeckner Humboldt Deutz Ag Stick shift for vehicle transmission
GB1057756A (en) * 1964-05-27 1967-02-08 Brown Tractors Ltd An improved multi-ratio transmission
US3387501A (en) * 1965-09-10 1968-06-11 Clark Equipment Co Shift linkage transmission
DE1954289A1 (en) * 1969-10-29 1971-05-06 Karl Krug Hygienic toilet seat cover with storage box, especially for public toilet systems

Also Published As

Publication number Publication date
GB2033982A (en) 1980-05-29
FR2438868B1 (en) 1985-06-28
DE2940129C2 (en) 1983-03-03
JPS5556725U (en) 1980-04-17
FR2438868A1 (en) 1980-05-09
CA1132032A (en) 1982-09-21
DE2940129A1 (en) 1980-04-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee