Child restraint device with airbag

Patent metadata

Field	Value
Publication number	US-12434653-B2
Application number	US-202218568205-A
Country	US
Kind code	B2
Filing date	Jun 7, 2022
Priority date	Jun 8, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

Child restraint device, in particular child seat and impact shield, for mounting in a vehicle, or component of such a device, comprising at least one airbag with at least one inflatable gas bag, wherein the gas bag is transferable from a non-inflated state to an inflated state, wherein the gas bag is at least substantially non-folded in the non-inflated state, or wherein an outer surface of the gas bag in the non-inflated state of the gas bag is configured such that, for at most 25% of the outer surface it applies that a respective outer surface perpendicular intersects the outer surface at a second point of the outer surface, or wherein, in the non-inflated state of the at least one gas bag, at most 25% of the outer surface of the gas bag directly abuts on another part of the outer surface.

First claim

The invention claimed is:

1. A child restraint device, including a child seat or an impact shield for mounting in a vehicle, the device comprising at least one airbag with at least one inflatable gas bag and at least one gas generator,
wherein the gas bag is transferable from a non-inflated state to an inflated state, wherein the airbag is at least substantially non-folded in the non-inflated state,
wherein an outer surface of the gas bag in the non-inflated state of the gas bag is configured such that, for at most 25% of an outer surface applies that a respective outer surface perpendicular intersects the outer surface at a second point of the outer surface, and
wherein, in the non-inflated state of the at least one gas bag, at most 25% of the outer surface of the gas bag directly abuts on another part of the outer surface.

2. The child restraint device according to claim 1 ,
wherein for at most 25% of the outer surface of the gas bag in the non-inflated state it applies that a respective starting point under observation of the outer surface abuts on a further point of the outer surface which is not directly adjacent to the starting point.

3. The child restraint device according to claim 1 ,
wherein for at most 25% of the outer surface of the gas bag in the non-inflated state it applies that to a respective starting point under observation of the outer surface there is a further point on the outer surface which can be reached via a shortest path along the surface of the gas bag of ≥1 cm and at a same time can be reached via a shortest straight path of ≤0.5 cm.

4. The child restraint device according to claim 1 ,
wherein at least one guiding device for guiding a gas flow during the transfer from the non-inflated to the inflated state is associated with the at least one gas bag.

5. The child restraint device according to claim 4 ,
wherein the guiding device comprises at least one local fixation of at least a section of an inner wall of the gas bag.

6. The child restraint device according to claim 1 ,
wherein the gas generator is arranged in an interior of the gas bag or on an underside or front side of the gas bag or wherein at least one gas inlet opening into the gas bag is arranged in a lower or front area of the gas bag.

7. The child restraint device according to claim 6 ,
wherein the gas generator is not arranged on an upper side or not on a rear side of the gas bag or wherein the gas inlet opening into the gas bag is not arranged in an upper area or not in a rear area of the gas bag.

8. The child restraint device according to claim 1 ,
wherein the gas generator is arranged to extend horizontally or transversely to a direction of view of the child or a direction of travel.

9. The child restraint device according to claim 1 ,
wherein at least one pressure-limiting device is associated with the gas bag in such a way that, when a predetermined pressure is reached or exceeded at least locally, a pressure relief by flowing out of gas out of the gas bag takes place.

10. The child restraint device according to claim 9 ,
wherein the at least one pressure-limiting device comprises at least one predetermined breaking point or a predetermined tearing point, or a tear seam, or at least one valve.

11. The child restraint device according to claim 9 ,
wherein the predetermined pressure is at least 3 bar or at most 25 bar.

12. The child restraint device according to claim 1 , comprising at least one first inner mantle surrounding the gas bag, which mantle is firmly connected to an impact shield main body or envelops the gas bag in such a way that the gas bag is inaccessible.

13. The child restraint device according to claim 12 ,
wherein an outer mantle is arranged around the inner mantle, which outer mantle is elastic or can be removed from the impact shield main body by triggering the airbag or is detachably connected to the impact.

14. The child restraint device according to claim 12 ,
wherein the inner mantle is elastic at least in sections or has at least one predetermined breaking point or at least one predetermined tearing point in such a way that the inner mantle breaks open or tears open when the airbag is triggered.

15. The child restraint device according to claim 1 ,
wherein the gas bag at least in sections, completely, or in the inflated state, covers an upper side, an underside, and a rear side of the impact shield.

16. A child restraint device according to claim 1 ,
wherein the gas bag at least in sections, completely, or at least in the inflated state or in the non-inflated state does not cover a front side of the impact shield.

17. A child restraint device comprising at least one airbag with at least one inflatable gas bag,
wherein the gas bag has at least one coupling means for coupling the gas bag to the child restraint device and is transferable from a non-inflated state to an inflated state,
wherein the at least one coupling means is designed to release the coupling when a predetermined force threshold is exceeded.

18. The child restraint device according to claim 17 , wherein the gas bag has at least one connecting device for connecting the gas bag to a support device.

19. The child restraint device according to claim 17 ,
wherein at least one gas bag is attached to a seat area underside or at least one gas bag is attached to a base underside of a base of the child seat to which a main body is attached or is attachable.

20. A method of manufacturing or configuring a child restraint device or a component of such a device according to claim 1 , wherein the gas bag is fixed or stowed in the non-inflated state such that it is at least substantially non-folded or is fixed or stowed such that an outer surface of the gas bag in the non-inflated state of the gas bag is configured such that for at most 25% of the outer surface it applies that a respective outer surface perpendicular intersects the outer surface at a second point of the outer surface or is fastened or stowed such that in the non-inflated state of the at least one gas bag at most 25% of the outer surface of the gas bag directly abut on another part of the outer surface.

Assignees

• Cybex Gmbh

Inventors

• Powell Iain

Classifications

• B60R21/239

  characterised by their venting means · CPC title

• B60R21/2334

  Expansion control features · CPC title

• B60R21/26

  characterised by the inflation fluid source or means to control inflation fluid flow {(arrangement or mounting thereof to the vehicle B60R21/20; blasting cartridges for producing gas under pressure in general F42B3/04; initiators or igniters therefor F42B3/10)} · CPC title

• B60R21/2072 Primary

  in children's seats · CPC title