Ergonomics Design Research of an Office Desks and Chairs Based on CAD

Abstract

Office leisure is the common pursuit of the enterprise, government, leadership and staff. The relaxed, happy, free and comfortable life is people always wish, also is inevitable to era development and social progress. So, according to the demand, indoor and outdoor dual-use multi-function folding leisure office furniture has been designed in the paper. First of all, through a large number of research and decisions, the structure of the product portfolio has been determined. In order to be convenient and quick, the characteristics of the furniture on the market have been collected and analyzed, especially the table, chairs and a bed. According to ergonomics, the parameters of the outdoor leisure office desks and chairs have been determined. The rhino software has been used to establish the combination of desk and chair to make the products comply with ergonomics, human psychology and aesthetic principles of the product. KEYWORD: Office desks and chairs; CAD; Ergonomics; 3D Max International Conference on Industrial Technology and Management Science (ITMS 2015) © 2015. The authors Published by Atlantis Press 822 leisure travel office, the new outdoor leisure furniture has been designed to solve our office, rest in the outdoor use. Figure 1. The office desk and chair Figure 2. Furniture suitcase Figure 3. Leisure bed 3 THE DETERMINATION OF RELEVANT SIZES Product design is people-oriented. The relationship between man and machine and environment has been considered in the appearance design of the product. If the desk is designed unreasonably, it can make a person produce fatigue quickly, limb pain, waist and back muscle tension. So this design should not only consider the form of desk, durability, economy, etc., but the body's physiological structure and health problems. As a result, the methods like human body measurement, analysis of the human body structure, physiology, bone movement test and etc were introduced to make the function of the office furniture design from the simple to combined with the feature of human-computer ergonomics principle, make them to accord with human body physiology characteristic direction.[3] 3.1 Determination of the human body size[4] According to GB 10000-10000 the average height of Chinese adults is 164.76 cm. According to our country adult human body structure size in the GB10000-88, the design sizes of the outdoor leisure furniture have been chose following table 1. Table 1. Our country adult human body structure size in the GB10000-88 (unit: mm) Sitting height 855~908 Sitting cubits height 251~263 High of the calf and foot 382~413 Sitting width 403~457 Sitting hip width 321~344 Width between two cubits Sitting 404~422 At work, the safe distance is 3 d to prevent the cracks by extrusion, namely the distance between one leg and the table back is 210 or higher. 3.2 Determination of the Furniture size According to GB10000-88, the sizes of this outdoor leisure furniture were as follows: (unit: mm) Desktop board (length × width × height) = 720×500×20 The back of the table (length × width × height) =720×10×435 Two side of the table (length × width ×height) =(500+10)×20×435=510×20×435 The developed surface of the table (length × width × height) =360×10×405 The whole table (length × width ×height) =(720+40)×500×740=760×500×740 The luggage that the table has been folded (length × width × height) =760×500×435 The face of the chair (length × width × height) =435×380×25 The extension of the chair(length × width × height) =300×380×25 The back of the chair (length × width × height) =900×380×25 The counterclockwise rotation angle of the chair back: 0°,90°,105°,135°,160°180 The bed surface of the chair unfolded (length × width × height) =1635×380×25 The chair (length × width × height) =(450-1635)×426×(900410) The completely folding chair (length × width × height) =700×426×290