Abnormal-shaped seal ring, lamp casing and lamp

Abstract

The invention relates to an abnormal-shaped seal ring, a lamp casing and a lamp. The abnormal-shaped seal ring is used for being placed in a sealing groove of any end cover on the lamp and being pressed by the inner surface of the lamp casing to achieve sealing on the lamp, the abnormal-shaped seal ring comprises an annular substrate comprising an inner lateral face for force fit with the bottom face of the sealing groove and an outer lateral face for force fit with the inner surface of the casing. A plurality of protruding portions are arranged on the outer lateral face, the distance from the top end to the inner surface of each protruding portion gradually increases in sequence, and each protruding portion inclines towards the protruding portion with longer distance from the top end to the inner surface. The structure of the abnormal-shaped seal ring can reduce frictional drag between the end cover and the inner surface of the casing to save labor for assembly, and simultaneously the abnormal-shaped seal ring brings convenience to take out the end cover during maintenance. The plurality of protruding portions and the inner surface of the casing are pressed to form a plurality of waterproof protective screens to further improve waterproofness.

Description

technical field [0001] The invention relates to the technical field of lighting, and more specifically, to a special-shaped sealing ring, a lamp housing and a lamp. Background technique [0002] At present, many lamps adopt an extruded barrel-shaped lamp body shell, and then assemble a front cover and a back cover at both ends of the shell. In order to ensure the overall waterproof performance of the lamp, O-ring seals are generally used for radial sealing between the front cover and the shell, and between the back cover and the shell to prevent water from entering the shell of the lamp. [0003] However, after the above-mentioned O-ring is used to seal the lamp, in order to achieve a better waterproof effect, the O-ring must be pressed tightly in the sealing grooves of the front cover and the back cover, so that a larger Press the O-ring sealing ring into the corresponding sealing groove with force, and it is difficult to remove the O-ring sealing ring when the lamp needs ...

AI Technical Summary

Problems solved by technology

[0003] However, after the above-mentioned O-ring is used to seal the lamp, in order to achieve a better waterproof effect, the O-ring must be pressed tightly in the sealing grooves of the front cover and the back cover, so that a larger Press the O-ring into the corresponding sealing groove with force, and it is difficult to remove the O-ring when the lamp needs to be repaired

Images