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Belt tensioner

A tensioner and belt technology, applied in the field of vehicles, can solve the problems of long distance, reduced life, uneven friction, etc.

Pending Publication Date: 2021-11-19
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the radial planes where the spring element and the pulley respectively are located are far away, so the spring force of the spring element and the plane where the load carried by the pulley acts on the corresponding plane have a relatively long axial distance, and the balance performance of the belt tensioner is not ideal
This unfavorable balance makes the parts easy to deform, so the strength requirements of the various parts of the belt tensioner are very high
At the same time, the imbalance of the belt tensioner will also lead to uneven friction of related parts, especially friction parts, so the life of related parts will be reduced

Method used

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Embodiment Construction

[0032] figure 1 with figure 2 A schematic perspective view and an exploded view of a belt tensioner according to a preferred embodiment are shown in each case. The belt tensioner can be used, for example, in a belt drive system in a hybrid vehicle, in particular a micro-hybrid vehicle. The belt drive can transmit power by means of its belt between the starter generator, the crankshaft of the internal combustion engine and the auxiliary equipment.

[0033] In this embodiment, the belt tensioner is mounted on the starter generator. to combine figure 1 with figure 2 It can be seen that the belt tensioner is formed overall as a ring, which can surround the motor shaft of the starter generator (not shown). The belt tensioner comprises a base element 4 , a first tensioning arm 10 , a second tensioning arm 8 and a spring element 11 . The base element 4 of the belt tensioner, the first tensioning arm 10 and the second tensioning arm 8 are each configured as a ring-shaped compo...

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Abstract

The invention relates to a belt tensioner for a belt drive system. The belt tensioner comprises a base element (4) for being fixedly connected with a driving and / or driven device in the belt drive system; a first tensioning arm (10) with a first tensioning wheel (14a); a second tensioning arm (8) with a second tensioning wheel (14b); and a spring element (11) which is tensioned between the first tensioning arm and the second tensioning arm in the circumferential direction, wherein the first tensioning arm and the second tensioning arm can rotate relative to each other and can rotate relative to the base element, the first tensioning arm, the second tensioning arm and the base element are each provided with a basically-arch radial bearing portion, the first tensioning arm and the second tensioning arm are supported on the radial bearing portion of the base element in the radial direction by means of the respective radial bearing portions, and force bearing center planes of the spring element, a first tensioning wheel, a second tensioning wheel and the radial bearing portions coincide basically.

Description

technical field [0001] The invention relates to the technical field of vehicles. In particular, the present invention relates to a belt tensioner for a belt drive system. Background technique [0002] In hybrid vehicles, especially micro-hybrid vehicles, it is often necessary to provide a starter generator, which can start the internal combustion engine in the electric motor mode and can generate electricity for the on-board electrical system and for charging the vehicle battery in the generator mode. current. Such a starter generator can be connected to a crankshaft of an internal combustion engine through a belt drive system, thereby constituting a belt-driven starter generator (BSG). The belt drive system is provided with a belt tensioner which usually has two tensioning pulleys which tension the belt on different drive sides on either side of the starter generator pulley so that the drive sides alternate Provides the right tension when used formally as a tight or loos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H7/08F16H7/12
CPCF16H7/0829F16H7/1209F16H2007/0802F16H2007/0865F16H2007/0893Y02T10/62
Inventor 李勇
Owner SCHAEFFLER TECH AG & CO KG
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