摘要:
In order to sufficiently prevent escape of noise generated by a resin block belt to the outside, a belt-type continuously variable transmission 17 includes a primary sheave 51, a secondary sheave 52, a resin block belt 55, and a transmission case 61. The resin block belt 55 is wound around the primary sheave 51 and the secondary sheave 52. The transmission case 61 defines the section of a belt chamber 38 accommodating the primary sheave 51, the secondary sheave 52, and the resin block belt 55. The transmission case 61 includes an exhaust passage 65, intake passages 98 and 99, and a sound absorbing member 36. The sound absorbing member 36 is attached to the inner wall of the exhaust passage 65 in such a position as to collide with sound wave traveling through the exhaust passage 65. The sound absorbing member 36 has a sound absorbing surface 36a crossing an extending direction A1 of the exhaust passage 65.
摘要:
[Problem] To provide a stepped automatic transmission with four or more speeds that has a simple configuration and an innovative structure. [Means for Resolution] A transmission 31 includes an input shaft 52, a first rotation shaft 53, a second rotation shaft 54, and a third rotation shaft 64 that are arranged in the front-rear direction. The input shaft 52 is provided with a group of clutches 81 on the upstream side that includes a first clutch 55 and a second clutch 59. The first clutch 55 and the second clutch 59 include a first pair of shift gears 86 and a second pair of shift gears 83, respectively. The second rotation shaft 54 is provided with a group of clutches 82 on the downstream side that includes a third clutch 70 and a fourth clutch 66. The third clutch 70 and the fourth clutch 66 include a third pair of shift gears 91 and a fourth pair of shift gears 90, respectively. The group of clutches 81 on the upstream side and the group of clutches 82 on the downstream side are arranged at locations where they at least partially overlap in the axial direction of the input shaft 52.
摘要:
To provide a noise preventing means suitable for a motorcycle including a belt type continuously variable transmission using a resin block belt, an end of an intake duct 71 for inducting cooling air into a belt chamber inside a transmission casing 36 is connected to a front half part of the transmission casing 36 of a motorcycle 1. The intake duct 71 extends upward from the transmission casing 36, then curves rearward, and extends rearward passing over a seat pillar 6R. An air chamber 94 is connected to a rear end of the intake duct 71. The intake duct 71 has a curving part curving at a part around the seat pillar 6R.
摘要:
The aim of this invention is to change the transmission gear ratios of a bike and to reduce its dimensions as much as possible. The derailleur, located between the peculiar position of the two cog sets (2,3), is the latest, the newest and a very important device. Both cog sets (2,3) have parallel and reversed rotating axles so that the big diameter cog (5), located on the primary cog set (2) corresponds to the small diameter cog (6), located on the secondary cog set (3). The primary cog set is assembled on the primary axle and is linked to the secondary cog set by means of a primary looping ring roller chain (8); the secondary cog set (3) supports the single external cog (15), linked to the rear wheel by means of the secondary chain (8). When the derailleur is externally activated, it shifts the primary chain (8) to the primary and the secondary cog sets (2,3), having different diameters, so as to change gear.
摘要:
A transmission apparatus (T) is capable of retaining an endless transmission chain (48) on a rotatable member (30, 40), even where a small inter-axis distance remains between two rotatable shafts (11, 24) to which each of two rotatable members (30, 40) is drivingly connected. The transmission (T) includes a drive sprocket member (30) for connecting to a main drive shaft (11). The transmission (T) also includes a driven sprocket member (40), connected to the output shaft (24) in parallel with the main drive shaft (11) and including a plurality of transmission sprockets (41-47). The transmission (T) further includes a chain (48) interconnecting both sprocket members (30, 40), and a transmission shift mechanism (M2) for positioning the chain (48) among the transmission sprockets (31, 41-47). The drive sprocket member (30) is supported at the main drive shaft (11) in the rotary center line direction, in such a way that the chain (48) is applied to both sprocket members (30, 40) in parallel with a plane crossing at a right angle with the rotary center line of the main drive shaft (11).
摘要:
A gear-shifting apparatus is provided which easily returns a derailed chain (19) to engagement with a tension and/or guide pulley (82, 72) when the chain (19) comes off the respective pulley due to a gear-shifting operation, and enables a gear-shifting operation to be performed when a gear-shifting is halted or is rotating backward. A derailer includes an arm which supports a tension pulley (82) and a pulley support member which supports a guide pulley (72). The arm is provided with engagement recovery-guiding parts for causing respectively derailed parts of a chain (19), which are derailed from the orbital plane of the tension pulley, to engage with the tension pulley (82). The pulley support member is provided with a first extending part and a second extending part for the purpose of causing derailed parts of a chain (19), which has been derailed from the orbital plane of the guide pulley (72), to engage with the guide pulley (72).