Child safety car seat with position-adjustable shoulder safety belts

A child safety seat comprising:

• a backrest;
• a seat bottom connected to said backrest;
• first and second shoulder safety belts;
• and
• belt position controller means for selectively variably positioning and supporting respective first and second upper belt portions of said first and second shoulder safety belts relative to said backrest, comprising means for increasing a lateral spacing distance between said first and second upper belt portions responsive to and together with moving said first and second upper belt portions upwardly relative to said backrest and for decreasing said lateral spacing distance responsive to and together with moving said first and second upper belt portions downwardly relative to said backrest, and means for increasing an inclination angle of each one of said first and second upper belt portions responsive to and together with moving said first and second upper belt portions downwardly relative to said backrest and for decreasing said inclination angle responsive to and together with moving said first and second upper belt portions upwardly relative to said backrest.

A child safety seat comprising:

• a seat bottom;
• a backrest connected to said seat bottom and having first and second elongated holes therein, wherein said first and second elongated holes respectively extend in elongation directions that are respectively inclined away from each other, with respective bottom ends of said first and second elongated holes being laterally closer together than respective upper ends of said first and second elongated holes;
• first and second belt holding plates that are respectively arranged to slide guidely along said first and second elongated holes, and that respectively have slit holes therein;
• and
• first and second shoulder safety belts respectively having first and second upper belt portions extending through said slit holes of said first and second belt holding plates and being supported thereby relative to said backrest;
• wherein said first and second belt holding plates respectively comprise first and second circular disks that are arranged rotatably in said first and second elongated holes respectively.