Driver seat for operator and dump truck including the same

Patent metadata

Field	Value
Publication number	US-9738252-B1
Application number	US-201615307107-A
Country	US
Kind code	B1
Filing date	Aug 12, 2016
Priority date	Aug 12, 2016
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

A driver seat for an operator includes: a fastener configured to fasten a pair of hip belts; a pair of shoulder belts each having a distal end attached to each of the pair of hip belts, the pair of shoulder belts being configured to hold a shoulder area of the operator; and a fastened-state detector configured to detect whether or not the fastener is fastened. The fastened-state detector includes: a detector main body configured to detect whether or not the fastener is fastened through electrical continuity; a signal line connected to the detector main body; and a bag-shaped section integrated with one of the pair of shoulder belts in a drawing direction of the shoulder belt, the bag-shaped section housing the signal line.

First claim

The invention claimed is:

1. A driver seat for an operator provided to a working vehicle, the driver seat comprising:
a seat section on which an operator sits;
a backrest erected at the back of the seat section, configured to support a back of the operator sitting on the seat section;
a pair of first retractors provided to left and right sides of the seat section;
a pair of hip belts each having a proximal end connected to each of the pair of first retractors, the pair of hip belts being configured to hold a hipbone area of the operator;
a fastener configured to fasten the pair of hip belts;
a pair of second retractors provided to a rear surface of the backrest;
a pair of shoulder belts each having a proximal end connected to each of the pair of second retractors and a distal end attached to each of the pair of hip belts, the pair of shoulder belts being configured to hold a shoulder area of the operator; and
a fastened-state detector configured to detect whether or not the fastener is fastened, wherein
the fastened-state detector comprises:
a detector main body configured to detect whether or not the fastener is fastened through electrical continuity;
a signal line connected to the detector main body; and
a bag-shaped section integrated with one of the pair of shoulder belts in a drawing direction of the shoulder belt, the bag-shaped section housing the signal line.

2. The driver seat for an operator according to claim 1 , further comprising:
a pair of guide members each having a groove-shaped hole through which the shoulder belt passes, the guide members being provided to an upper portion of the backrest, wherein
an enlarged section through which the bag-shaped section passes is provided to the groove-shaped hole of one of the guide members.

3. The driver seat for an operator according to claim 1 , wherein
the bag-shaped section is integrated with the shoulder belt between a position at which the shoulder belt is wound by the second retractor to the greatest extent possible and a position at which the shoulder belt is drawn to the greatest extent possible.

4. The driver seat for an operator according to claim 3 , further comprising:
a conduit housing a signal line separated from the bag-shaped section, the conduit being provided to the rear surface of the backrest, and
the conduit is configured to be movable in accordance with a drawing operation or a winding operation of the shoulder belt.

5. A dump truck comprising the driver seat for an operator according to claim 1 .

Assignees

• Komatsu Mfg Co Ltd

Inventors

• SHODA Takuma
• Nishida Shunsuke
• Wada Hirofumi

Classifications

• B60R22/34

  Belt retractors, e.g. reels (anchoring devices {, e.g. guide loops} , with means to tension the belt in an emergency B60R22/195) · CPC title

• B60R22/48 Primary

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

• B60P1/04

  with a tipping movement of load-transporting element (dredgers or soil-shifting machines E02F3/00) · CPC title

• B60R22/18

  Anchoring devices · CPC title

• B60R2022/027

  Four-point seat belt systems, e.g. with the two upper points connected together · CPC title