Speed ​​adjustment device and shielding device equipped therewith

The speed adjustment device addresses wear issues by using a weight holder with radial movement and reduced friction configurations, maintaining braking force and extending the device's lifespan.

JP7891200B2Active Publication Date: 2026-07-16TACHIKAWA +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
TACHIKAWA
Filing Date
2021-12-28
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Conventional speed adjustment devices for braking the rotation of a drive shaft suffer from wear of the brake drum due to high friction, leading to a decrease in performance over time.

Method used

A speed adjustment device comprising a case, speed change means, and braking means, where the weight is housed in a weight holder allowing radial movement, and rotates to generate resistance via centrifugal force, with configurations such as shorter axial length, non-ferrous or non-metallic materials, reduced friction coefficients, and weight reduction processes to minimize wear.

Benefits of technology

The device maintains braking force while reducing friction and wear on the case, extending the service life of the device.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a speed regulator capable of maintaining braking power while suppressing the wear of a case by reducing the friction between a weight and the case.SOLUTION: A speed regulator for braking the rotation of a drive shaft while allowing rotation of the drive shaft includes a case, transmission means, and braking means. The case accommodates the transmission means and the braking means. The transmission means increases the speed of rotation of the drive shaft and transmits it to the braking means. The braking means includes a weight holder and a weight. The weight holder accommodates the weight in a state where its movement in a radial direction is allowed. The weight rotates as the weight holder rotates, and comes into slide contact with an inner peripheral surface of the case by a centrifugal force to generate resistance.SELECTED DRAWING: Figure 5
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