Braking device for vehicle seats

By meshing the toothed portion of the toothed plate 100 with the toothed portion of the pinion shaft 50, the problem of the pinion shaft rotating in the brake-locked state is solved, thus achieving stable maintenance of the seat height and preventing the seat from sinking.

CN116620122BActive Publication Date: 2026-05-26DAS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DAS CO LTD
Filing Date
2022-12-21
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

When existing vehicle seat braking devices are subjected to heavy loads for extended periods, the friction between the pinion shaft and the brake roller decreases, causing the pinion shaft to slide and rotate. This results in the inability to firmly maintain the seat height, causing the seat cushion to sag.

Method used

The toothed plate 100 of the gear plate and the pinion shaft mesh with the toothed portion of the pinion shaft 50, and the pinion shaft 50 is prevented from rotating in the brake-locked state by the engagement of the toothed plate 100 with the unlocking component 30.

Benefits of technology

Even when the friction of the pinion shaft is reduced in the brake-locked state, the rotation of the gear shaft 50 of the gear plate 100 and the pinion shaft 50 prevents the seat from sinking.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116620122B_ABST
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Abstract

This invention relates to a braking device for a vehicle seat, which includes a toothed plate disposed on an unlocking component and toothedly engaged with a pinion shaft to constrain rotation of the pinion shaft. Therefore, even if the rotational suppression force based on the brake roller decreases due to repeated loading, the rotation of the pinion shaft can be reliably suppressed by the aforementioned toothed plate, thereby preventing seat sagging.
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