T/JYBZ 031-2024 Primary and Middle School Students' Lunch Break Class Chairs

Scope

Scope: This document specifies the technical requirements, warning labels, test methods, inspection rules, marking, user manuals, packaging, transportation, and storage for mid- and primary school students' lunch break chairs. This document applies to mid- and primary school students' lunch break chairs. Main technical content: This standard consists of seven chapters, including scope, normative references, terms and definitions, technical requirements, test methods, inspection rules, marking, user manuals, packaging, transportation, and storage. The main content includes the following aspects: 1. Technical requirements (1) Appearance - Requirements for the appearance of wooden parts, painted wooden parts, metal parts, plastic parts, and upholstered parts. - Dimensions a) Lunch break chairs have two functions: one is to serve as classroom chairs for students, and the other is to provide students with rest and lunch break during class. b) At present, the technology of adjustable chair height is mature and widely used. To facilitate school procurement, management, and student use, this standard recommends adjustable-height lunch break chairs and does not recommend fixed-height models. Therefore, this standard only specifies the functional size requirements for adjustable-height lunch break chairs. c) To provide students with comfort during lunch breaks, lunch break chairs need headrests and footrests. Since the seat height of lunch break chairs can be adjusted to suit students of different heights, the headrests and footrests also need to have suitable adjustable ranges. d) Lunch break chairs are used in primary and secondary school classrooms, which are constrained by classroom space dimensions; when used with desks, they are constrained by the specifications of desks in GB/T 3976; to meet the comfort of adolescents sitting and lying down, they are constrained by human body dimensions. (2) Weight - Specifies the maximum

Development Information

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