Helmet

Patent metadata

Field	Value
Publication number	US-11000089-B2
Application number	US-201414286038-A
Country	US
Kind code	B2
Filing date	May 23, 2014
Priority date	Jun 27, 2013
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A helmet which performs good ventilation and which is capable of mitigating the uncomfortable feeling due to sound is provided. The shock absorbing liner includes front ventilation holes to communicatively connect the front openings to the inside of the shock absorbing liner, outside air paths disposed in a space on an outer side relative to an inner surface of the shock absorbing liner, and communicative holes to communicatively connect the inside of the shock absorbing liner to the outside air paths. The outside air paths include primary flow paths disposed to be connected to the rear opening and secondary flow paths. The communicative holes communicatively connects positions on an outer surface of the shock absorbing liner except positions of the primary flow paths, to the inside of the shock absorbing liner. The secondary flow paths are disposed to connect the communicative holes to the primary flow paths.

First claim

What is claimed is:

1. A helmet, comprising a hard shell and a shock absorbing liner disposed on an inner side of the shell,
the shell comprising front openings and rear openings,
the shock absorbing liner, which is arranged inside the shell, comprising
front ventilation holes that directly connect the front openings and an inner space existing at an inner surface of the shock absorbing liner so that air flows from the front openings to the inner space,
outside air paths formed between an outer surface of the shock absorbing liner and the inner surface of the shell are connected to the rear openings, wherein the outside air paths and the front ventilation opening holes are not in direct connection with each other in the outer surface of the shock absorbing liner, and
communicative holes that connect the inner space and the outside air paths through the shock absorbing liner so that the air flows from the inner space to the outside air paths,
wherein the outside air paths comprise:
primary flow paths disposed on the outer surface of the shock absorbing liner that connect to the rear openings, and
secondary flow paths disposed on the outer surface of the shock absorbing liner that connect to the communicative holes,
wherein at least one secondary flow path branches off from each of the primary flow paths,
wherein openings of the communicative holes connected to the secondary flow paths are configured so that the air flows from the inner space to the primary flow paths through the openings of the communicative holes and the secondary flow paths, and then flows through the primary flow paths along the inner surface of the shell and then flows out of the helmet through the rear openings, and
wherein the front ventilation holes are disposed at independent paths in the shock absorbing liner from the outside air paths.

2. A helmet in accordance with claim 1 ,
wherein the secondary flow paths have a flow path direction substantially perpendicular to a flow path direction of the primary flow paths.

3. A helmet in accordance with claim 1 , wherein portions of the primary flow paths to which at least the secondary flow paths are connected are disposed to have a flow path direction substantially equal to a direction from a front side to a rear side of the helmet.

4. A helmet in accordance with claim 1 , wherein the communicative holes are disposed as linear holes substantially perpendicular to a flow path direction of the outside air paths.

5. A helmet in accordance with claim 1 , further comprising inside grooves disposed in the inner surface of the shock absorbing liner in a direction from a front side to a rear side of the helmet,
wherein the communicative holes are disposed to connect bottoms of the inside grooves to the secondary flow paths.

6. A helmet in accordance with claim 1 , further comprising outside grooves disposed in the outer surface of the shock absorbing liner,
wherein the outside air paths include the outside grooves.

7. A helmet in accordance with claim 6 , further comprising a negative pressure generator disposed in a proximity of the rear opening of the shell to generate pressure in a direction from the rear opening to the outside of the shell,
wherein the outside air paths include the outside grooves and the inner side of the shell.

Assignees

• Shoei Co Ltd

Inventors

• Ikeda Yoshiyuki

Classifications

• A42B3/10

  Linings (A42B3/16 takes precedence) · CPC title

• A42B3/281 Primary

  Air ducting systems · CPC title

• A42B3/12

  Cushioning devices · CPC title