Connecting arrangement and helmet comprising such a connecting arrangement

Patent metadata

Field	Value
Publication number	US-10271602-B2
Application number	US-201414785543-A
Country	US
Kind code	B2
Filing date	Apr 17, 2014
Priority date	Apr 19, 2013
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

The invention relates to a connection arrangement ( 6 ) adapted to connect a first ( 2 ) and a second part ( 3 ) slidably arranged in relation to each other. The connection arrangement ( 6 ) is characterized in that said connection arrangement ( 6 ) is adapted to allow the sliding movement between the first ( 2 ) and the second part ( 3 ) in all directions. The arrangement ( 6 ) comprises a connection member ( 7 ) directly or indirectly connected to at least one of the first part and the second part ( 2, 3 ) and a device creating a spring force and/or a damping force ( 8 ) during sliding movement between the first and second part ( 2, 3 ) adapted to be connected with or to cooperate with said connection member ( 7 ). The invention further relates to a helmet ( 1 ) comprising a first helmet part ( 2 ) to be arranged closer to a wearer's head, a second helmet part ( 3 ) arranged radially outside of the first helmet part ( 2 ) and at least one connection arrangement ( 6 ) according to the above connecting the first and the second helmet part ( 2, 3 ).

First claim

The invention claimed is:

1. A helmet comprising
a first helmet part;
a second helmet part arranged radially outside of the first helmet part such that the first helmet part is configured to be closer to the wearer's head than the second helmet part; and
at least one connection arrangement located between the first and second helmet parts and connecting the first and the second helmet parts;
wherein the at least one connection arrangement is adapted to allow sliding movement between the first and the second helmet part in any direction parallel to a surface of the first or second helmet part, said surface being adapted to slide against a surface of the other of the first or second helmet part and comprises:
a housing;
means for creating a spring force and/or damping force in response to sliding movement between the first part and second part so as to absorb energy of the sliding movement between the first part and second part, said means for creating a spring force and/or damping force being provided within the housing and wherein the means for creating a spring force and/or damping force comprising a dividing wall that is at least one of moveable or elastically deformable and at least one spring arranged to act upon the dividing wall; and
an inelastic elongated connection member of a fixed length connected, within the housing, at a first end of the connection member to the means for creating a spring force and/or a damping force and connected, external to the housing, at a second end of the connection member opposite the first end to one of the first part and the second part.

2. The helmet according to claim 1 , comprising a means for facilitating sliding between the first and second helmet part is arranged between the first and the second helmet part to facilitate a sliding movement between the first and second helmet part in response to a force created by an oblique impact on the first or second helmet part, wherein the means for facilitating sliding comprises a material having a low friction component or coating where the low friction component or coating is selected from a group of low friction materials consisting of: a polytetrafluoroethylene, a polymer of acrylonitrile, butadiene and styrene (ABS), a polyvinylchloride, a polycarbonate, a high-density polyethylene, nylon, a waxy polymer, a polyfluoroalkoxy alkane, a fluorinated ethylene propylene, a polyethylene, an ultra high molecular weight polyethylene, oil, grease, or a combination thereof.

3. The helmet according to claim 1 , wherein the connection member is an elongated rigid pin.

4. The helmet according to claim 3 , wherein the at least one spring is a torsion, leaf or spiral spring connected to or acting against the at least one connection member and either one of the first or second helmet part.

5. The helmet according to claim 1 , wherein the connection member is bendable.

6. The helmet according to claim 5 , wherein the housing and the means for creating a spring force and/or a damping force are configured such that movement of first end of the connection member is constrained such that the first end of the connection member moves along an axis through the housing irrespective of the direction of the movement between the first and second helmet parts.

7. The helmet according to claim 1 , wherein the housing contains a compressible medium.

8. The helmet according to claim 7 , wherein the dividing wall is arranged to permit a leak of medium over the dividing wall creating a damping force.

9. The helmet according to claim 1 , wherein the housing contains a non-compressible medium.

10. The helmet according to claim 1 , wherein the spring is a linear, non-linear, or progressive spring.

11. The helmet according to claim 1 , wherein the housing comprises notches, slots, or friction increasing members controlling the movement of the dividing wall.

Assignees

• Mips Ab

Inventors

• Halldin Peter
• Lanner Daniel
• Lindblom Kim
• Thiel Johan

Classifications

• A42B3/06 Primary

  Impact-absorbing shells, e.g. of crash helmets · CPC title

• A42B3/064 Primary

  with relative movement between layers · CPC title