What are the differences and similarities between bicycle helmets and motorcycle helmets?

* * * Similarity: The main purpose is to protect the knight's head, prevent or reduce the injury, and even save the knight's life.

Difference:

First, the types are different.

1, bicycle helmet

(1) special for expressway: no brim;

(2) Road and mountain use: equipped with a detachable brim and using a helmet similar to baseball or roller skating;

(3) Full helmet type: It looks like a motorcycle helmet and is generally used by downhill or climbing car enthusiasts.

2. Motorcycle helmet

(1) full helmet: it has perfect full head protection function, but it lacks ventilation and is quite angry;

(2) Cross-country helmet: a common motorcycle cross-country race, generally without goggles, the shape is very popular;

(3)3/4 helmet: the shape is similar to the unprotected full helmet at the chin;

(4) Half helmet: also known as Harley helmet, which ignores the protection of the chin and the back of the head and is banned by some countries and regions;

(5) Assembling helmet and lifting helmet: The chin device can be turned up completely, from full helmet to 3/4 helmet.

Second, the structure is different:

1, bicycle helmet:

A bicycle helmet consists of a helmet shell, a helmet body, a buckle, a hat belt (safety belt), a brim, air holes, a knob and a washer.

2, motorcycle helmet:

Motorcycle helmet consists of shell, buffer layer, goggles, hat band, lining and jaw guard.

Third, the materials are different:

1, bicycle helmet:

EPS (expanded polystyrene) material, EPP (expanded polypropylene) foam and new multiple protective foam.

2, motorcycle helmet:

ABS resin material, PC+ABS alloy material, FRP, carbon fiber.

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