Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Continuously variable transmission

A technology of continuously variable speed change device and speed change device, applied in the direction of hoisting device, transmission device, transmission device control, etc., to achieve economical production and operation, accurately controllable and predictable effect of changing speed

Active Publication Date: 2010-01-13
ROBERT BOSCH GMBH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as already noted, the minimum primary clamping force Kp required to transmit the provided torque corresponds to the required minimum secondary clamping force Ks, so that the latter fits the primary clamping force Kp DV Insufficient, and the drive belt will slip relative to the primary pulley

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Continuously variable transmission
  • Continuously variable transmission
  • Continuously variable transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] figure 1 A cross-sectional view through a continuously variable transmission 1 according to the prior art is schematically depicted. A known speed change device 1 includes a primary pulley 2 that can be driven by an engine (not shown) with two forces Tp and a secondary pulley 3 that can drive a load with a pair of forces Ts (not shown). show). The pulleys 2 and 3 are provided with pulley disks 21 and 31 fixed to respective pulley shafts 20 , 30 and with pulley disks 22 , 32 displaceable relative to said shafts 20 , 30 in the axial direction. The drive belt 10 , more specifically the pressure belt 10 , is clamped between pulley discs 21 , 22 , 31 , 32 so as to be able to be driven between the two shafts 20 , 30 by means of frictional mechanical energy. In this case, the axially directed force with which the drive belt 10 uses for each The pulleys 2, 3 are clamped in place, said forces hereinafter referred to as primary clamping force Kp and secondary clamping force Ks...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Continuously variable transmission (1) for motor vehicles, provided with a primary pulley (2) and a secondary pulley (3), around which there is arranged a drive belt (10), which is clamped between two conical pulley disks of the primary pulley (2) with a primary claming force and between two conical pulley disks of the secondary pulley (3) with a secondary clamping force, wherein, as a result of a contact angle of at least one of the pulley disks of the respective pulleys (2; 3) with the drive belt (10) being adapted, and at least in the largest transmission ratio of the transmission (1), i.e. Low, a clamping force ratio between the primary clamping force and the secondary clamping force has a value in the range between 1 and the clamping force ratio in the smallest transmission ratio, i.e. Overdrive.

Description

technical field [0001] The invention relates to a continuously variable transmission device. This type of transmission is well known and is used to transmit mechanical energy between the primary pulley and the secondary pulley of the transmission. It is possible for the transmission ratio of the transmission to vary continuously in a certain range, wherein a pair of rotational speeds is in The gear ratio transfers. As is well known, the drive belt is sandwiched between two pulley disks of each pulley, the pulley disks being substantially frusto-conical or conical in shape; in the present invention, the transmission ratio of a transmission is defined as the The ratio between the effective radial position of the drive belt and the effective radial position of the drive belt on the primary pulley, which positions may also be referred to as secondary and primary running radii, respectively. In order to be able to change these running radii and thus the transmission ratio, at lea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/00F16H55/56F16H61/662
CPCF16H55/56F16H61/66272F16H9/125F16H61/66F16H61/662F16H61/00
Inventor 阿德里安斯·约翰尼斯·威廉默斯·范德莱斯特阿尔耶恩·布兰兹玛约翰尼斯·赫拉尔杜斯·卢多维克斯·玛丽亚·范斯皮耶克
Owner ROBERT BOSCH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com