Actuation system and segmented pulley transmission comprising same

By moving the pulley segment between the engagement and disengagement zones using the deflector and driven component in the actuation system, the problems of low efficiency and poor reliability of clutchless multi-ratio transmission devices under high-speed or high-load conditions are solved, achieving more efficient and reliable transmission.

CN114729682BActive Publication Date: 2026-02-10INMOTIVE INC
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Patent Information

Application Number
CN201980098215.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2019-05-09
Filing Date
2019-11-29
Publication Date
2026-02-10
Estimated Expiration
2039-11-29

AI Technical Summary

Technical Problem

Existing clutchless multi-ratio transmission devices are inefficient and unreliable when operating at high speeds or under heavy loads, and suffer from ratchet effects, slippage, and tension problems, which limit their widespread application.

Method used

An actuation system is employed, including a deflector and a follower. The deflector moves a pulley segment between an engagement zone and a disengagement zone. An electromagnetic actuator controls the position of the deflector to achieve selective engagement and disengagement of the pulley segment, combined with the rotational motion of a ring member and multiple pulley segments.

Benefits of technology

It improves the efficiency and reliability of the transmission device under high speed or heavy load conditions, reduces wear, and enhances the commercial feasibility of the transmission device.

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Abstract

An actuation system for moving a plurality of pulley segments of a segmented pulley between an engaged zone and a disengaged zone is provided. The actuation system includes a deflector configured to rotate between at least a first position and a second position, and a plurality of followers, each follower including a protrusion configured to engage with the deflector to move a respective one of the pulley segments between the engaged zone and the disengaged zone, wherein the deflector is configured to move between the first position and the second position to selectively engage with the plurality of followers and to index each follower between the engaged position and the disengaged position to move the plurality of pulley segments between the engaged zone and the disengaged zone. A segmented pulley transmission including the actuation system is also provided.
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Citation Information

Patent Citations

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