Belt guiding mechanism and child vehicle seat
View Patent ↗A belt guiding mechanism, for example for a child vehicle seat, which is suitable for guiding a belt extending through the belt guiding mechanism and locking said belt against movement. The belt guiding mechanism comprises a cam that is capable of pivoting movement relative to a bearing surface, said belt being movable in a tensioning direction and in the opposite direction through a passage present between said cam and said bearing surface. The cam is pivotable in a direction towards the hearing surface for locking the belt against movement. The cam is connected to a sleeve that can be positioned against a person's shoulder, in which sleeve the belt is slidably accommodated.
1. A belt guiding mechanism suitable for guiding a belt extending through the belt guiding mechanism and locking said belt against movement, which belt guiding mechanism comprises a cam that is capable of movement relative to a bearing surface, said belt being movable in a tensioning direction and in the opposite direction through a passage present between said cam and said bearing surface, which cam is movable in a direction towards the bearing surface for locking the belt against movement, characterized in that the cam is connected to a sleeve that can be positioned against a person's shoulder, in which sleeve the belt is slidably accommodated.
2. A belt guiding mechanism according to claim 1 , characterized in that a liner having a higher coefficient of friction than the belt is present on an outer side of the sleeve remote from the belt.
3. A belt guiding mechanism according to claim 1 , characterized in that a liner having a relatively low coefficient of friction with the belt is present on an inner side of the sleeve facing towards the belt.
4. A belt guiding mechanism according to claim 1 , characterized in that the cam can pivot about a pivot pin.
5. A belt guiding mechanism according to claim 4 , characterized in that the cam is connected to the sleeve via a strap, which strap is connected to the cam between a pivot pin of the cam and the bearing surface.
6. A belt guiding mechanism according to claim 1 , characterized in that the cam is capable of sliding movement against spring force in a direction towards the bearing surface.
7. A child vehicle seat comprising a seat portion, a back support and at least one shoulder belt extending through said back support, characterized in that the child vehicle seat comprises a belt guiding mechanism comprising a cam that is capable of movement relative to a bearing surface, said belt being movable in a tensioning direction and in the apposite direction through a passage present between said cam and said bearing surface, which cam is movable in a direction towards the bearing surface for locking the belt against movement, said cam being connected to a sleeve that is present on a side of the back support that faces towards the seat portion, said shoulder belt being slidably accommodated within said sleeve.
8. A child vehicle seat according to claim 7 , characterized in that a liner having a higher coefficient of friction than the belt is present on an outer side of the sleeve remote from the belt.
9. A child vehicle seat according to claim 7 , characterized in that a liner having a relatively low coefficient of friction with the belt is present on an inner side of the sleeve facing towards the belt.
10. A child vehicle seat according to claim 7 , characterized in that the cam is provided with teeth on a side that faces towards the bearing surface.
11. A child vehicle seat according to claim 7 , characterized in that the cam is connected to the sleeve via a strap, which strap is connected to the cam between a pivot pin of the cam and the bearing surface.
12. A child vehicle seat according to claim 7 , characterized in that the cam is capable of pivoting movement against spring force in a direction towards the bearing surface.
13. A child vehicle seat according to claim 7 , characterized in that the cam is capable of pivoting movement in a direction away from the bearing surface upon movement of the belt in the tensioning direction.
14. A child vehicle seat according to claim 7 , characterized in that the cam is capable of sliding movement against spring force in a direction towards the bearing surface.
15. A child vehicle seat according to claim 7 , characterized in that the cam can be locked in a clearance position in which the shoulder belt can freely move in a tensioning direction and in the opposite direction through the passage between the cam and the bearing surface.
16. The child vehicle seat according to claim 15 , characterized in that the back support is provided with at least two passages, wherein the cam can be moved to a locking position for locking the shoulder belt against movement at the first passage, whilst the cam can be locked in the clearance position at the other passage.
17. A child vehicle seat according to claim 7 , characterized in that the shoulder belt comprises at least one extension portion comprising at least two opposing parts of the shoulder belt, which can be moved apart under the influence of a force being exerted thereon.
18. A child vehicle seat according to claim 17 , characterized in that the extension portion is present on a side of the back support remote from the seat portion.
19. A child vehicle seat according to claim 17 , characterized in that the parts are interconnected by a stitched seam, which connection can be broken under the influence of a force being exerted thereon.
20. A child vehicle seat according to claim 17 , characterized in that the parts abut against each other, being interconnected over a stitched area, which connection can be broken under the influence of a force being exerted thereon.
21. A child vehicle seat according to claim 17 , characterized in that said parts are interconnected by means of a spring element.