简述工作座椅设计要点：
1，工作座椅的结构形式应尽可能与坐姿工作的各种操作活动要求相适应，应能使操作者在工作过程中保持身体舒适，稳定并能进行准确地控制和操作。2，工作座椅的坐高和腰靠必须是可调节的。坐高调节范围在GB10000中“小腿加足高”，即360-480mm之间；工作座椅坐面高度的调节方式可以是无极的或间隔20mm为一档的有级调节。工作座椅腰靠高度的调节方式为165-210mm间的无级调节。
3，工作座椅可调节部分的结构构造，必须易于调节，必须保证在椅子使用过程中不会改变已调节好的位置并不得松动
4，工作座椅各零部件的外露部分不得有易伤人的尖角锐边，各部结构不得存在可能造成挤压，剪钳伤人的部位。
5，无论操作者坐在座椅前部，中部还是往后靠，工作座椅坐面和腰靠结构均应使其感到安全，舒适。
6，工作座椅腰靠结构应具有一定的弹性和足够的刚性。在座椅固定不动的情况下，腰靠承受250N的水平方向作用力，腰靠倾角b不得超过115度。
7，工作座椅一般不设扶手。需设扶手的座椅必须保证操作人员作业活动的安全性。
外地社保怎么查询8，工作座椅的结构材料和装饰材料应耐用，阻燃，无毒。坐垫，腰靠，扶手的覆盖层应使用柔软，防滑，透气性好，吸汗的不导电材料制造。
二：手握工具的设计原则失败的滋味作文
一般原则a必须有效的实现预定的功能
b必须与操作者身体成适当比例，使操作者发挥最大效率
c 必须按照作业者的力度和作业能力设计，所以要适当的考虑到性别，
训练程度和身体素质上的差异
d 工具要求的作业姿势不能引起过度疲劳。
解剖学因素a避免静肌负荷
b保持手腕处于顺直状态、
c避免掌部组织受压力
人物访谈报告d避免手指重复动作
修的组词
3坐，立姿交替作业岗位
1，经常需要完成前伸超过41cm或高于工作面15cm的重复操作。如果不考虑人体可及范围和静肌负荷疲劳的特点，可取坐姿作业岗位；但考虑人的特点，应选择坐立姿交替岗位。
2，对于复合作业，有的最好取坐姿操作，有的则适宜立姿操作，从优化人机系统来考虑，应取坐立交替岗位。
4视觉显示中眼-视屏界面的设计原则
1，在眼-视屏界面上，首先要求满足人的视觉特点，即从人体轴线至视屏中心的最大阅读距离为710-760mm，以保护人眼不受电子射线伤害；俯视最大角度不超过15度，以防止疲劳；视屏的最大角度为40度，以保持一般不转动头部。
2，另一要求是，选用可旋转和可移动的显示器，建议显示器可调高度约为180mm，显示器可调角度为-5至15度，以减少反光作用；如设置固定显示器，其上限高度与水平视线平齐，以避免头部上转。
5仪表分布布置原则
水平：常用仪表在20度-40度水平视野内，最重要的仪表，应在视野中心3度范围内，工作效率优先，
40度-60度区域内只允许设置次要仪表，除了不常用和不重要的仪表外，一般不宜设在80度水平视野外。
垂直：中视线向下30度为最佳视角，布置常用，重要仪表
巴马镇中视线向上10度布置次要仪表
爸妈寄语幼儿园中视线向下45度布置操作仪表领导干部讲党课
中视线向上10度至30度为最不重要仪表
6作业场所布置考虑顺序
第一位：主显示器
宝宝腹泻症状第二位：与主显示器相关的主控制器
第三位：控制与显示的关联（使控制器靠近相关的显示器，运动相关性关系等）；第四位：按顺序使用的元件
第五位：使用频繁的元件应处于便于观察，操作的位置
第六位：与本系统或其他系统的布局一致
总则：重要性原则—使用频率原则—功能原则—使用频率原则
（英文版）
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