HARNESS PRETENSIONING DEVICE FOR CHILD SAFETY SEAT

Abstract

A child safety device for a vehicle including a seat and a harness, a sensor for providing an indication of a vehicle crash, and a take up assembly linked to sensor and the webbing to take up the webbing in response to the indication from the sensor.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the invention may be best understood by reference to the following description in conjunction with the accompanying drawing figures in which:

FIG. 1 is a front perspective view of a child safety seat;

FIG. 2 is a side view of the child safety seat;

FIG. 2A is an enlarged side view of a take up assembly for the child safety seat;

FIG. 3 is a side view of the child safety seat showing operation of the take up assembly;

FIG. 3A is an enlarged side view showing operation of the take up assembly;

FIG. 4 is also a side view of the child safety seat showing operation of the take up assembly;

FIG. 4A is an enlarged side view of the operation of the take up assembly;

FIG. 5 is another side view of the child safety seat showing operation of the take up assembly;

FIG. 5A is another enlarged view showing operation of the take up assembly;

FIG. 6 is another front perspective view of the child safety seat;

FIG. 7 is a front perspective view of an alternative embodiment of the seat;

FIG. 8 is a side view of the alternative embodiment of the child safety seat; and

FIG. 8A is an enlarged side view of the take up assembly of the alternative embodiment.

Claims

1. A child safety device for a vehicle, comprising: (a) a seat and a harness comprising webbing for securing an occupant in the seat;(b) a sensor for providing an indication of a vehicle crash; and(b) a take up assembly linked to sensor and the webbing to take up the webbing in response to the indication from the sensor.

2. A child safety device according to claim 1 wherein the take up assembly is located under the seat.

3. A child safety device according to claim 1 wherein the take up assembly comprises a spring loaded pivot bar.

4. A child safety device according to claim 3 wherein the pivot bar rotates to take up the webbing.

5. A child safety device according to claim 4 further comprising a ratchet mechanism for preventing the pivot bar from returning to an original position.

6. A child safety device according to claim 1 wherein the webbing comprises an adjuster strap.

7. A child safety device according to claim 6 wherein the take up device takes up the adjuster strap.

8. A child safety device according to claim 1 wherein the sensor comprises a spring.