A flashlight with adjustable focus

By using a sliding cover to drive a circular column and gear rack design, the problem of traditional flashlight head jamming and dust entering is solved, achieving smooth focus adjustment and dust prevention.

CN224454472UActive Publication Date: 2026-07-03SHENZHEN JINBA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN JINBA TECH CO LTD
Filing Date
2025-07-31
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Traditional flashlights are prone to jamming when the head extends or retracts from the body, and dust can easily get inside the body.

Method used

An adjustable focus flashlight was designed. A sliding cover drives a cylindrical column to rotate, and the cylindrical column drives a second rack to move the light-emitting component through a gear, thereby adjusting the focus and preventing the flashlight head from extending or retracting on the body, thus preventing dust from entering.

Benefits of technology

It enables smooth adjustment of the flashlight's focus, prevents dust from entering the flashlight body, and improves the user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a focus-adjustable flashlight, comprising a body, a detachable head attached to the body, a lens at the front end of the head, a light-emitting device inside the head, and an adjustment assembly for driving the light-emitting device. The adjustment assembly includes a rectangular sliding cover and a cylindrical column, with gears at both ends of the cylindrical column. A first rack is located inside the sliding cover. The light-emitting device includes a light-emitting component and a second rack fixed to one side of the light-emitting component. In this focus-adjustable flashlight, by sliding the sliding cover, the cylindrical column rotates via gears, and the second rack rotates via gears. Since the second rack is fixed to the light-emitting component, its movement causes the light-emitting component to move away from or closer to the lens, thereby adjusting the flashlight's focus. This prevents the head from extending or retracting within the body, effectively preventing dust from entering the body during head extension or retraction, and making focus adjustment smoother.
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