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Multi-disk transmission
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A transmission and disk surface technology, which is applied to friction transmission devices, belts/chains/gears, mechanical equipment, etc., and can solve problems such as torque fluctuations in transmissions, pressure differences in push rollers, etc.
Inactive Publication Date: 2015-09-16
JATCO LTD
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[0005] However, in this configuration, in order to ensure the life of the ball bearing, it is necessary to increase the diameter of the ball bearing, reduce the rotational speed, and increase the allowable radial load, resulting in an increase in the diameter of the pressing roller, which in turn leads to an increase in the size of the transmission.
[0006] In addition, there is a difference in the pressing force of the pressing rollers between the case where the two disks are pressed directly below the balls and the two disks are pressed directly below the gap between the balls. , thus, the torque that can be transmitted by the transmission changes
Method used
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no. 1 approach
[0019] figure 1 It is an overall schematic diagram of a vehicle equipped with the multiple disc transmission of the first embodiment of the present invention.
[0020] The vehicle 1 includes an engine 2 as a power source, a multi-disc transmission (hereinafter, referred to as a "transmission") 3, left and right drive shafts 4, 5, and left and right drive wheels 6, 7.
[0021] The transmission 3 includes a gearbox 9, an input shaft 10, a primary disc 11, a secondary disc 12, a pressing mechanism 13, an output shaft 14, a dry start clutch 15, a reverse gear 16, a reverse idle gear 17, an output gear 18. Synchronization mechanism 19, terminal gear 20, and differential gear unit 21.
[0022] The input shaft 10 and the output shaft 14 are arranged in parallel, and are rotatably supported by the gearbox 9.
[0023] figure 2 It is a view of the transmission 3 viewed from the engine 2 side. image 3 Yes figure 2 Bottom view. Figure 4 Yes figure 2 Section IV-IV. In addition, yes figure 2...
no. 2 approach
[0076] Next, a second embodiment of the present invention will be described. The pressing roller 40 and its supporting structure of the second embodiment are different from those of the first embodiment.
[0077] Image 6 Represents the same as the first embodiment Figure 4 Corresponding parts ( figure 2 Section IV-IV) shows the pressing roller 40 of the second embodiment and its supporting structure.
[0078] The first shaft portion 57 that supports the pressing roller 40 is inclined and provided with respect to the disk surfaces of the disks 11 and 12 so as to be closer to the output shaft 14 and closer to the disk surface. As a result, the pressing roller 40 is inclined to the output shaft 14 side with respect to the disk faces of the disks 11 and 12, and it is suppressed that the pressing roller 40 and the side surface are generated in the area on the input shaft side and the output shaft side of the torque transmission contact portion. Slip caused by the speed difference o...
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Abstract
A multi-disk transmission is provided with: a primary disk that is provided to an input shaft; a secondary disk that is provided to an output shaft and that comprises a disk overlap area that overlaps with the primary disk; a pair of pressing rollers that are arranged on both sides of the disks in the disk overlap area with the disks therebetween and that support a shaft section via a needle bearing; a shift actuator that moves the pair of pressing rollers between the input shaft and the output shaft; and a pressing mechanism that causes pressing force to act on the pair of pressing rollers and pushes the pair of pressing rollers against the disks.
Description
Technical field [0001] The invention relates to a multi-disk transmission. Background technique [0002] JP2010-53995A discloses a multi-disk transmission in which a primary disk provided on the input shaft and a secondary disk provided on the output shaft are partially overlapped to provide a disk overlap area, and a pair of pressing rollers are used in this area. The two disks are held in contact with each other, and the rotation of the input shaft is transmitted to the output shaft. [0003] In the multi-disc transmission, the shift is realized by changing the position where a pair of pressing rollers sandwich the two discs. That is, if the position sandwiching the two discs is close to the input shaft, the gear ratio will change to the low speed side (large gear ratio side), and if the position sandwiching the two discs is close to the output shaft, the gear ratio will move to the high speed side (the gear ratio is smaller). Side) change. [0004] In the multi-disc transmissio...
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Application Information
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