轮椅座椅系统防撞性评估：“吊钩”式座椅固定硬件。

Evaluation of wheelchair seating system crashworthiness: "drop hook"-type seat attachment hardware.

作者信息

Bertocci G, Ha D, Deemer E, Karg P

机构信息

Injury Risk Assessment and Prevention Laboratory, Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, PA 15260, USA.

出版信息

Arch Phys Med Rehabil. 2001 Apr;82(4):534-40. doi: 10.1053/apmr.2001.19740.

DOI:10.1053/apmr.2001.19740

PMID:11295018

Abstract

OBJECTIVE

To evaluate the crashworthiness of commercially available hardware that attaches seat surfaces to the wheelchair frame.

DESIGN

A low cost static crashworthiness test procedure that simulates a frontal impact motor vehicle crash.

SETTING

Safety testing laboratory.

SPECIMENS

Eleven unique sets of drop-hook hardware made of carbon steel (4), stainless steel (4), and aluminum (3).

INTERVENTIONS

Replicated seat-loading conditions associated with a 20g/48 kph frontal impact. Test criterion for seat loading was 16,680 N (3750 lb).

MAIN OUTCOME MEASURES

Failure load and deflection of seat surface.

RESULTS

None of the hardware sets tested met the crashworthiness test criterion. All failed at less than 50% of the load that seating hardware could be exposed to in a 20g/48 kph frontal impact. The primary failure mode was excessive deformation, leading to an unstable seat support surface.

CONCLUSIONS

Results suggest that commercially available seating drop hooks may be unable to withstand loading associated with a frontal crash and may not be the best option for use with transport wheelchairs.

摘要