Protective helmet

A protective helmet for a head of a human being, the protective helmet comprising an outer protective shell and an inner support structure, which support structure comprises a headband and an upper head support defining a head accommodating opening, and the support structure comprises on the headband a forehead accommodating side and a side adapted to accommodate a back of the head,

• wherein the support structure is secured onto the protective shell by at least one connector,
• wherein between the protective shell and the support structure a longitudinal adjuster is arranged, by which longitudinal adjuster the support structure is adjustable relative to the protective shell in a direction of the forehead accommodating side or in a another direction of the side adapted to accommodate the back of the head,
• wherein the longitudinal adjuster comprises a support strap, which support strap is adapted to extend from both temples over the forehead accommodating side,
• wherein the longitudinal adjuster is adapted to be connected to the protective shell in regions of both temples,
• wherein the support strap comprises at least one first coupler interacting with at least one second coupler on the support structure,
• wherein the support structure comprises a first adjusting strap and a second adjusting strap,
• wherein the first and the second adjusting straps are arranged on the upper head support of the support structure symmetrically relative to a helmet central plane and run from the side adapted to accommodate the back of the head in the direction of the forehead accommodating side, and
• wherein the first and the second adjusting straps are connected to be longitudinally adjustable by a longitudinally adjustable connection to an accommodating mesh arranged on the forehead accommodating side.

A protective helmet for a head of a human being, the protective helmet comprising an outer protective shell and an inner support structure, which support structure comprises a headband and an upper head support defining a head accommodating opening, and the support structure comprises on the headband a forehead accommodating side and a side adapted to accommodate a back of the head,

• wherein the support structure is secured onto the protective shell by at least one connector,
• wherein between the protective shell and the support structure a longitudinal adjuster is arranged, by which longitudinal adjuster the support structure is adjustable relative to the protective shell in a direction of the forehead accommodating side or in a another direction of the side adapted to accommodate the back of the head,
• wherein the longitudinal adjuster comprises a support strap, which support strap is adapted to extend from both temples over the forehead accommodating side,
• wherein the longitudinal adjuster is adapted to be connected to the protective shell in regions of both temples,
• wherein the support strap comprises at least one first coupler interacting with at least one second coupler on the support structure, and
• wherein the headband is connected to the protective shell on the side adapted to accommodate the back of the head at least by an intermediate piece.

A protective helmet for a head of a human being, the protective helmet comprising an outer protective shell and an inner support structure, which support structure comprises a headband and an upper head support defining a head accommodating opening, and the support structure comprises on the headband a forehead accommodating side and a side adapted to accommodate a back of the head,

• wherein the support structure is secured onto the protective shell by at least one connector,
• wherein between the protective shell and the support structure a longitudinal adjuster is arranged, by which longitudinal adjuster the support structure is adjustable relative to the protective shell in a direction of the forehead accommodating side or in another direction of the side adapted to accommodate the back of the head,
• wherein the longitudinal adjuster comprises a support strap, which support strap is adapted to extend from both temples over the forehead accommodating side,
• wherein the longitudinal adjuster is adapted to be connected to the protective shell in regions of both temples,
• wherein the support strap comprises at least one first coupler interacting with at least one second coupler on the support structure,
• wherein the headband of the support structure further comprises on the side adapted to accommodate the back of the head a width adjuster to be adjustable in circumference, whereby the head accommodating opening can be varied in size,
• wherein the width adjuster comprises a gear wheel, which engages in two overlapping end sections of the headband,
• wherein the gear wheel is articulated by a gear via a drive shaft, on which drive shaft an adjusting wheel engages,
• wherein the drive shaft has a polygonal cross-section, so that the adjusting wheel is displaceable relative to the drive shaft in a longitudinal axis direction of the drive shaft,
• wherein the headband comprises in addition to the width adjuster at least one rough adjuster,
• wherein the headband comprises in a region of the at least one rough adjuster a first headband area and a second headband area, which face one another and are connected together by a form-fitting locking element,
• wherein the first headband area includes an opening and the second headband area includes a tapered end,
• wherein the tapered end of the second headband area is received in the opening of the first headband area, and
• wherein the form-fitting locking element comprises recesses in the first headband area and projections in the second headband area, the recesses interacting with the projections.