Safety belt system for vehicle seats

Patent metadata

Field	Value
Publication number	US-9327682-B2
Application number	US-201314397648-A
Country	US
Kind code	B2
Filing date	Apr 30, 2013
Priority date	May 2, 2012
Publication date	May 3, 2016
Grant date	May 3, 2016

Abstract

Disclosed is a safety belt system for vehicle seats, including: a vehicle seat part which includes a seat portion, and a backrest; a safety belt which includes a shoulder belt, and a waist belt, and restricts a body of an occupant; a headrest which is connected with the backrest by a rotation shaft, and protects a face or neck region of the occupant from the shoulder belt using a cushion having both convex sides; a sensor which senses impact of the vehicle; and a rotation locking unit which prevents the headrest from being rotated when the sensor senses an accident signal that is equal to or greater than a predetermined output.

First claim

The invention claimed is:

1. A safety belt system for vehicle seats, comprising:
a vehicle seat part which includes a seat portion, and a backrest;
a safety belt which includes a shoulder belt, and a waist belt, and restricts a body of an occupant;
a headrest which is connected with the backrest by a rotation shaft, and protects a face or neck region of the occupant from the shoulder belt using a cushion,
wherein the headrest forms with the cushion that both sides of the headrest forms a convex shape relative to the center of the headrest;
a sensor which senses impact of the vehicle;
a rotation locking unit which prevents the headrest from being rotated when the sensor senses an accident signal that is equal to or greater than a predetermined output; and
a switch button which is electrically connected with the rotation locking unit, and by which the rotation of the headrest is locked or released in accordance with selection of the occupant.

2. The safety belt system of claim 1 , wherein the safety belt includes a slip guide which guides the belt, a retractor which winds up the belt passing through the slip guide, a tongue plate which is fastened to the belt, a buckle which is installed at one side of a seat in which the occupant is seated, fixes the belt, and binds with the tongue plate, and an anchor which fixes the other end of the belt to a vehicle body.

3. The safety belt system of claim 1 , wherein the sensor is a strain gage, or an acceleration sensor.

4. The safety belt system of claim 3 , wherein the sensor is installed on the rotation shaft or the headrest, and senses the impact.

5. The safety belt system of claim 1 , wherein when the accident signal is sensed, the rotation locking unit prevents the rotation of the headrest only for a predetermined time.

6. The safety belt system of claim 2 , wherein when the accident signal is sensed, the rotation locking unit prevents the rotation of the headrest only for a predetermined time.

7. The safety belt system of claim 3 , wherein when the accident signal is sensed, the rotation locking unit prevents the rotation of the headrest only for a predetermined time.

8. The safety belt system of claim 4 , wherein when the accident signal is sensed, the rotation locking unit prevents the rotation of the headrest only for a predetermined time.

Assignees

• Kyungpook Nat Univ Ind Acad

Inventors

• Han Dong Seog
• Hamm In Suk
• Kang Nam Cheol

Classifications

• B60R22/023

  Three-point seat belt systems comprising two side lower and one side upper anchoring devices (B60R22/022, B60R22/03 take precedence) · CPC title

• B60R22/48 Primary

  Control systems, alarms, or interlock systems, for the correct application of the belt or harness · CPC title

• B60N2/42 Primary

  the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats (for protecting children B60N2/26; arm-rests B60N2/75; head-rests B60N2/888) · CPC title