a shell structure

Abstract

The invention relates to a shell structure for a motorcycle helmet. The motorcycle helmet comprises a helmet body and a mask. The two sides of the helmet body are each provided with a connecting mechanism. The two sides of the mask are each provided with a lug portion. Each lug portion is connected with one connecting mechanism. Each connecting mechanism comprises a shell, wherein the shell comprises an inner side shell, a middle shell and outer side shells, the outer side shells are located on the two sides of the middle shell, the inner side shell is fixedly installed on the helmet body, the middle shell is installed on the inner side shell rotationally, and slots where the lugs can be plugged and pulled are formed between the outer side shells and the middle shell; an installation stud is installed on the helmet body, a positioning boss is arranged on the inner side shell, a center hole is formed in the positioning boss, the installation stud is inserted into the center hole, and a screw is inserted into the center hole and is in thread fit with the installation stud. The screw is hidden in the shell through the shell structure, the dustproof and waterproof effects are achieved, and the phenomena of rusting, damage and the like generated when the screw is exposed to the sun and rain are avoided.

Description

technical field [0001] The invention relates to a shell structure, in particular to a shell structure for motorcycle helmets. Background technique [0002] Motorcyclists must wear helmets to protect their heads. Existing motorcycle helmets generally include a helmet body worn on the head and a transparent face shield. The face shield is rotatably mounted on the helmet body through hinge mechanisms on both sides, and can be pushed upwards away from the face when the face shield is not needed. Push down to cover your face when you need to use the mask. Protect the driver's face and eyes from damage caused by wind, rain, dust and other substances through the mask. [0003] When the motorcycle helmet is not in use, it needs to be stored. If it is placed outside, it is easy to be stolen, so it is generally stored in the car box under the seat cushion. Due to the limited space in the car box, especially after storing raincoats, water bottles, backpacks and other supplies, the r...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of low service life in the prior art, the embodiment of the present invention provides a shell structure, which is used on a motorcycle helmet. The motorcycle helmet includes a helmet body and a face shield, and a coupling mechanism is respectively provided on both sides of the helmet body , the two sides of the mask are respectively provided with an ear, and each ear is respectively connected with a connecting mechanism, and each connecting mechanism includes: a shell, which includes an inner shell, a middle shell and an outer shell, and the inner shell and the outer shell are separated from the middle shell The inner shell is fixedly mounted on the helmet body, the middle shell is rotatably mounted on the inner shell, the outer shell and the middle shell are fastened together, and there is a plug-in ear hole between the outer shell and the middle shell. Slots; the helmet body is provided with mounting studs, the inner shell is provided with positioning bosses, the positioning bosses are provided with a central hole, the middle shell is provided with turning holes, and the positioning bosses are in the shape of a stepped shaft and include a large diameter section And the small diameter section, the connection between the large diameter section and the small diameter section forms a shoulder; the middle shell is rotatably fitted outside the small diameter section of the positioning boss through the turning hole, the mounting stud is inserted into the center hole, and a screw is inserted into the center The hole is matched with the thread of the mounting stud, the head of the screw is against the end of the small diameter section of the positioning boss to fasten the inner shell on the helmet body, and the middle shell is limited between the head of the screw and the shoulder

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