GB/T 42746-2023Adult three-dimensional foot models (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

Introduction

The foot is an important part of the contact between the human body and the ground. It is an important organ that absorbs shock when bearing weight and walking. Wearing ill-fitting shoes for a long time Shoes may not only cause various foot diseases, but also easily cause sports injuries, thereby affecting the health of the whole body. Shoes and other products The fit and comfort of the shoe depend on whether the shoe last conforms to the foot shape characteristics. The design should strictly follow the foot shape characteristics, and there should be a balance between the foot, the last and the shoe.

Perform data conversion. The foot model contains rich foot shape characteristics and can reflect the comprehensive characteristics of a specific group of people. For shoe lasts, insoles, and foot models, The design of wearable devices and other related products plays an important role.

This document is developed based on the second national body size measurement data conducted from 2014 to 2018.This document is for Chinese adults Based on the characteristics of three-dimensional foot size distribution and the application of foot size in the design of shoes, foot protection devices and other products, the adult Human foot size classification settings and coordinate description of the three-dimensional foot model. The series of foot models established in this document can be used for shoe lasts, insoles, The design, verification, display and molding of products such as foot protection devices make them suitable for the characteristics of Chinese feet and improve the comfort of wearing the products. Adult 3D foot model

1 Scope

This document gives the foot size classification settings for adults (18 to 70 years old) and the coordinate description of the three-dimensional foot model.

This document is applicable to the specification design and selection of shoe lasts, insoles, foot protection devices and other products.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 5703-2023 Anthropometric basic items for technical design

3 Terms and definitions

The terms and definitions defined in GB/T 5703-2023 and the following apply to this document.

3.8 The most outwardly projecting point of the medial malleolus of the tibia

3.7 The most anterior point of the lower end of the tibia

3.5 From the highest point on the upper edge of the first metatarsophalangeal joint