Flashlight with sealed front end

Abstract

The invention relates to a flashlight with a sealed front end, which comprises a cylindrical shell, a front transparent part, a front end cover and a reflector cup. The front end cover is in threaded connection with the outer wall of the front end of the shell and compresses the front transparent part on the upper end face of the shell. Moreover, the outer wall of the shell around the periphery of the outer wall is provided with a ring-shaped boss pressed against the screwed front end cover. An L-shaped front sealing ring is compressed between the front transparent part and the upper end faceof the shell. The positioning structure design is added at the front end of the flashlight, so that the accurate compression ratio of a rubber sealing material is guaranteed; and due to the adoption of the design of an L-shaped section of a sealing element, the probability that the sealing element is twisted and torn when the front end cover or a compression ring is screwed in is reduced, so thatthe sealing performance is guaranteed and the service life of the flashlight is prolonged. Therefore, the front end of the flashlight is reliably sealed, the performance and the safety of the flashlight are guaranteed and the ingress protection (IP) requirements under various conditions can be met.

Description

technical field [0001] The present invention relates to flashlights, and more particularly, to a front-sealed flashlight. Background technique [0002] In order to meet the requirements of dustproof and waterproof, the front end of the flashlight is generally equipped with a front end cover and a transparent part. In particular, flashlights with high requirements for IP (Ingress Protection), such as some flashlights used outdoors or in special occasions, require reliable sealing to ensure safe and reliable operation of the flashlight, so the front end of the flashlight is usually provided with a sealing structure. [0003] However, most of the sealing structures at the front end of the flashlight in the prior art do not have a positioning structure that ensures the compression rate of the seal, which easily leads to excessive or insufficient screwing in of the front end cover, resulting in reduced service life of the seal or unreliable sealing. In addition, some flashlight ...

AI Technical Summary

Problems solved by technology

[0003] However, most of the sealing structures at the front end of the flashlight in the prior art do not have a positioning structure that ensures the compression rate of the seal, which easily leads to excessive or insufficient screwing in of the front end cover, resulting in reduced service life of the seal or unreliable sealing

In addition, some flashlight front-end sealing structures use a U-shaped seal that wraps around the outer circumference of the tempered glass transparent part. When the front end cover is screwed in, due to friction factors, the seal will easily rotate with the front end cover, resulting in Twisting or tearing of the seal, ultimately making the seal unreliable and affecting the performance and safety of the flashlight

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