GB700367A - Improvements in or relating to change-speed gear mechanism for motor vehicles - Google Patents
Improvements in or relating to change-speed gear mechanism for motor vehiclesInfo
- Publication number
- GB700367A GB700367A GB3102750A GB3102750A GB700367A GB 700367 A GB700367 A GB 700367A GB 3102750 A GB3102750 A GB 3102750A GB 3102750 A GB3102750 A GB 3102750A GB 700367 A GB700367 A GB 700367A
- Authority
- GB
- United Kingdom
- Prior art keywords
- speed
- clutch
- change
- solenoid
- shaft
- 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
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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/10—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with one or more one-way clutches as an essential feature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
700,367. Change-speed gearing. NICKOLS, I H. Dec. 20, 1951 [Dec. 20, 1950], No. 31027/50. Class 80 (2) In four-speed constant-mesh countershaft gearing for motor-vehicles, with a normallyengaged direct-drive clutch 3 between the driving and driven shafts 1, 2, the countershaft '8, constantly driven from shaft 1 through gears 9, 10, drives the gear 7b for first-speed constantly through splines and the gears 6b, 5b for second and third speeds through normallyengaged, clutches 6c, 5c. the corresponding mesned gears 7, 6, 5, being connected to shaft 2 through one-way clutches 7a, 6a, 5a, while a reversely-acting one-way clutch 4 is provided between the shafts 1, 2. Thus, direct-drive through clutch 3 is normally operative, but by disengaging the clutches 3, 5c and 6c in succesion, third, second and first speeds are succesively established. The one-way clutch 4 ensures that shaft 1 is driven directly from shaft 2 on overrun in any speed. Additional normally-disengaged and simultaneously operable claw clutches 12a, 12b, are arranged between gears 6, 6a and shafts 2, 8, the clutch 12b having in series therewith a one-way clutch 12c, so that on over-run-in first speed, shaft 1 may be driven in second speed. Gear 7b is slidable on shaft 8 for engaging a reverse idler 11. The claw clutches 3, 5c, 6c may be associated with baulking rings which prevent engagement except on sychronism of the parts. The engine is connected to shaft 1 through a fluid coupling or centrifugal clutch. The gearing may be operated automatically under combined accelerator and engine-speed control. Electrical mechanism for this purpose comprises a finger displaceable according to engine speed and operating four switches carried by a member displaceable by the accelerator, these switches comprising a change-up switch at one end and spaced change-down switches for third, second and first speeds. Each change-down switch controls a solenoid which, when energized, disengages the clutch associated with the next higher speed, a holding switch being associated with the solenoid to maintain such energization. With the vehicle at rest and the engine idling, the three solenoids are energized. On accelerating. the vehicle moves off in first gear and the finger moves towards and eventually closes the change-up switch, whereby the throttle is closed through energization of an over-riding throttleclosing solenoid and a selector switch associated with the second-speed solenoid is opened to deenergize that solenoid so that second speed is established. On accelerating in second speed, the change-up switch is again eventually closed whereby the throttle is closed and a selector switch associated with the third-speed solenoid is opened to bring in third-speed. Top speed is then similarly brought in by accelerating in third speed. If the speed falls or the accelerator is released the finger successively closes the change-down switches and the lower speeds are successively established. The selector switches are displaced both on energization and on deenergization of the solenoids so as to be in proper position for operation, and contacts associated with the clutch solenoids momentarily actuate a relay as a clutch is engaged, to break the circuit of the throttle-closing solenoid. Means are provided to prevent establishment of top or third speeds when the clutches 12a, 12b are engaged, and for momentarily closing the throttle during the initial disengagement of the clutches.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3102750A GB700367A (en) | 1950-12-20 | 1950-12-20 | Improvements in or relating to change-speed gear mechanism for motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3102750A GB700367A (en) | 1950-12-20 | 1950-12-20 | Improvements in or relating to change-speed gear mechanism for motor vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB700367A true GB700367A (en) | 1953-12-02 |
Family
ID=10316833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3102750A Expired GB700367A (en) | 1950-12-20 | 1950-12-20 | Improvements in or relating to change-speed gear mechanism for motor vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB700367A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20090750A1 (en) * | 2009-10-02 | 2011-04-03 | Oerlikon Graziano Spa | TRANSMISSION TO TWO SPEEDS FOR ELECTRIC VEHICLES |
JP2016161100A (en) * | 2015-03-04 | 2016-09-05 | スズキ株式会社 | Multistage change gear |
US11226025B2 (en) * | 2017-05-12 | 2022-01-18 | Yamaha Hatsudoki Kabushiki Kaisha | Electric vehicle and drivetrain thereof |
-
1950
- 1950-12-20 GB GB3102750A patent/GB700367A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20090750A1 (en) * | 2009-10-02 | 2011-04-03 | Oerlikon Graziano Spa | TRANSMISSION TO TWO SPEEDS FOR ELECTRIC VEHICLES |
US8984976B2 (en) | 2009-10-02 | 2015-03-24 | Oerlikon Graziano S.P.A. | Two-speed transmission for electric vehicles |
JP2016161100A (en) * | 2015-03-04 | 2016-09-05 | スズキ株式会社 | Multistage change gear |
CN105937586A (en) * | 2015-03-04 | 2016-09-14 | 铃木株式会社 | Multistage transmission device |
US10274052B2 (en) * | 2015-03-04 | 2019-04-30 | Suzuki Motor Corporation | Multistage transmission device |
US11226025B2 (en) * | 2017-05-12 | 2022-01-18 | Yamaha Hatsudoki Kabushiki Kaisha | Electric vehicle and drivetrain thereof |
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