Flashlight and tail cover component thereof

Abstract

The invention discloses a flashlight and a tail cover component thereof. The flashlight tail cover component comprises a tail cover and a rotating cover, a thread used for being connected with a flashlight body is arranged on the tail cover, the outer side of the tail cover extends to be provided with a matched connecting end, a first gear is arranged on the matched connecting end, the rotating cover is rotatably connected to the matched connecting end of the tail cover in a covered manner, a second gear is arranged in the rotating cover, the first gear is an inner gear or an outer gear, the second gear is an outer gear or an inner gear matched with the first gear, a gear tooth engaging position of at least one of the first gear and the second gear is bent, engaging faces of the gears are outwards-protruding faces of gear teeth in a direction that the tail cover which is driven by rotating of the rotating cover rotates relative to the flashlight body, and the gear tooth end of at least one of the gears with the bent gear teeth can elastically deform towards a concave face to be disengaged with the gear teeth of the other gear. An over-tight slipping structure is arranged, so that protecting of the thread is facilitated.

Description

technical field [0001] The invention relates to the field of portable lighting fixtures, in particular to a flashlight and a tail cover assembly thereof. Background technique [0002] Now many flashlights on the market are screwed directly on the tail cap and the barrel body. There is no additional device to confirm whether it is tightened. Users can only confirm whether it is tightened by hand. If the screw is not tightened, the contact between the battery and the contact spring will no longer be good, and the light will flicker when the flashlight is used, and the light will be unstable; moreover, the battery will easily shake in the barrel, making the use feel bad. And when the tightening force is too large, it is easy to cause the thread between the tail cap and the barrel body to slip, so that the tail cap and the barrel body cannot be tightened stably. Contents of the invention [0003] The main purpose of the present invention is to provide a flashlight tail cap as...

AI Technical Summary

Problems solved by technology

If it is not tightened tightly, the contact between the battery and the contact spring will no longer be good. When the flashlight is in use, the light will flicker and the light will be unstable; moreover, the battery will easily shake in the barrel, and the use feeling will be bad.

However, when the tightening force is too large, it is easy to cause the thread between the tail cap and the barrel body to slip, so that the tail cap and the barrel body cannot be tightened stably.

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