Vehicular child safety seat

• US 6,520,579 B2
• Filed: 07/16/2001
• Issued: 02/18/2003
• Est. Priority Date: 07/13/2001
• Status: Expired due to Fees

• Current Assignee: Aprica Kassai Kabushikikaisha
• Original Assignee: Aprica Kassai Kabushikikaisha
• Inventors: Yamamoto, Hiroyasu, Kassai, Kenzou
• Primary Examiner(s): Cuomo, Peter M.
• Assistant Examiner(s): Vu, Stephen
• Application Number:
  US09/906,628
• Publication Number:
  US 20010048237A1
• Time in Patent Office: 582 Days
• Field of Search: 297/250.1, 297/256.12, 297/256.13, 297/256.1, 297/256.14, 297/344.21, 297/344.22, 297/344.24, 297/344.25, 248/131, 248/415, 248/416, 296/65.01
• US Class Current: 297/256.12
• CPC Class Codes: B60N 2/146 characterised by the locking device
• CPC Class Codes: B60N 2/2857 characterised by the peculiar orientation of the child B60N2/2869 takes precedence
• CPC Class Codes: B60N 2/286 forward facing B60N2/2866 takes precedence
• CPC Class Codes: B60N 2/2863 backward facing
• CPC Class Codes: B60N 2/2869 rotatable about a vertical axis
• CPC Class Codes: B60N 2/2878 the back-rest being inclinable

Abstract

A child seat includes a seat body, a base, and a mechanism for simultaneously sliding the seat body forward as the seat body is rotated relative to the base. This rotation sliding mechanism includes a cam plate connected to the seat body and an abutting plate connected to the base. When the seat body is in a forward-facing position, one side of the cam plate is entirely abutted against the abutting plate. When the cam plate is rotated by 45°, the cam plate moves toward the front while a corner of the cam plate abuts against the abutting plate. With this structure, the child seat has enhanced securing stability relative to a vehicle seat and can facilitate in-vehicle handling.

Claims

1. A child safety seat adapted to be arranged on a vehicle seat in a vehicle and to be secured to the vehicle seat by a seat belt of the vehicle, said child safety seat comprising:

a base adapted to be supported on the vehicle seat and to be secured to the vehicle seat by the seat belt;

a seat body adapted to have a child seated therein, wherein said seat body is rotatably and slidably mounted on said base;

a cam member comprising a cam plate that has a peripheral cam surface, and that is secured to a bottom of said seat body; and

an abutting member comprising an abutting plate that abuts against said peripheral cam surface of said cam plate, and that is secured to said base;

wherein said peripheral cam surface has a cam shape with a varying radial distance from a center of said cam plate to various points along said peripheral cam surface, so that a relative rotation between said seat body and said base, with said abutting plate abutting and relatively moving along said peripheral cam surface, will cause a relative sliding displacement between said seat body and said base.

2. The child safety seat according to claim 1, wherein said cam shape of said peripheral cam surface is a square shape with rounded corners.

3. A child safety seat adapted to be arranged on a vehicle seat in a vehicle and to be secured to the vehicle seat by a seat belt of the vehicle, said child safety seat comprising:

a base adapted to be supported on the vehicle seat and to be secured to the vehicle seat by the seat belt;

a seat body adapted to have a child seated therein, wherein said seat body is rotatably and slidably mounted on said base; and

means for sliding said seat body in a linear direction relative to said base in response to manual rotation of said seat body relative to said base, wherein said means comprise a cam plate that has a peripheral cam surface and that is secured to a bottom of said seat body, and an abutting plate that abuts against said peripheral cam surface of said cam plate and that is secured to said base.

4. The child safety seat according to claim 3, wherein a cam shape of said peripheral cam surface is a square shape with rounded corners.

5. A child safety seat adapted to be arranged on a vehicle seat in a vehicle, and having a base portion adapted to be secured to the vehicle seat by a seat belt of the vehicle seat, and a support portion that forms a support space for receiving a child and that is rotatably supported by said base portion, further comprising:

a rotation sliding mechanism, including a cam plate that has a peripheral cam surface and that is secured to a bottom of said support portion, and an abutting plate that is secured to said base portion and that is abutted against said peripheral cam surface of said cam plate for sliding said support portion in forward and backward directions of said base portion in response to rotation of said support portion.

6. The child safety seat according to claim 5, wherein a cam shape of said peripheral cam surface is a square shape with rounded corners.

7. The child safety seat according to claim 5, wherein said rotation sliding mechanism further includes a guide frame provided in said base portion for slidably guiding said support portion in the forward and backward directions, and said peripheral cam surface of said cam plate has a rectangular outer surface shape.

8. The child safety seat according to claim 5, further comprising biasing means for applying to said support portion a force toward a back side of said base portion, said biasing means being provided between said base portion and said support portion.