Damper device

The damper device addresses the issue of attenuation performance deterioration during engine braking by using a configuration with varying elastic member spring constants to delay hysteresis torque generation, thereby maintaining effective damping performance.

JP7863995B2Active Publication Date: 2026-05-22EXEDY CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
EXEDY CORP
Filing Date
2022-03-22
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Existing damper devices experience a deterioration in attenuation performance during engine braking due to the generation of hysteresis torque.

Method used

A damper device configuration with an input rotating body, output rotating body, first and second elastic members, and a hysteresis torque generating mechanism, where the second elastic member has a smaller spring constant than the first, delaying the generation of hysteresis torque and suppressing its occurrence during engine braking.

Benefits of technology

The damper device effectively suppresses the decrease in damping performance by controlling the timing of hysteresis torque generation, maintaining optimal attenuation performance.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To suppress deterioration in attenuation performance.SOLUTION: A camper device 1 include: an input rotation body; an output rotation body; a first elastic member 51; a second elastic member 52; and a hysteresis torque generating mechanism. The input rotation body is arranged so as to rotate. The output rotation body is arranged so as to relatively rotate with the input rotation body. The first elastic member 51 is arranged in a state of being compressed so as to energize the input rotation body in a first rotation direction and to energize the output rotation body in a second rotation direction. The second elastic member 52 is arranged in a state of being compressed so as to energize the input rotation body in the second rotation direction and to energize the output rotation body in the first rotation direction. The second elastic member 52 has a smaller spring rate than that of the first elastic member 51. The hysteresis torque generating mechanism is constituted so as to generate hysteresis torque when the input rotation body is twisted by equal to or greater than a first angle in the second rotation direction with respect to the output rotation body.SELECTED DRAWING: Figure 2
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