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毕业设计-便携式净牙器（电动牙刷）的设计，共28页，13474字，附设计图纸、通用三维图纸、开题报告
研究的内容
(1)资料调研及分析，了解牙刷现状，掌握其国内外发展趋势；
(2)从工作原理、工艺过程、关键机构等方面进行分析研究；
(3) 通过试验测试性能达到最优
(4)电动牙刷结构的设计：根据试验确定的最优参数，设计牙刷结构零件，进而完成便携牙刷的设计，分析牙刷使用中的故障，分析其原因，指出解决方案；
(5)通过仿真动画及机构运动分析，验证电动牙刷机构的合理性；
(6)分析可行性，提出初步方案；
(7)对自己的工作进行总结，提出后续研发方向。
摘 要
牙刷是用于清洁牙齿的一种刷子。一般刷牙时都会在牙刷上加上牙膏清洁牙齿,牙刷是人们日常生活的必备品。人类祖先早有漱口，刷牙的习惯。在公元前3000年苏美人乌尔城邦的国王墓穴中就曾发现过清理口腔用的最早工具——牙棒，一支能用上两个星期。在古希腊和罗马时代人们用动物骨灰做牙粉清理口腔，还有些原始部落用木炭、盐水、细砂、树枝来清理牙齿。将一端捣碎，做成刷状，用来清理牙缝及刷牙，称之为Miswak，是一种天然牙刷，据科学家分析，这种树枝含氟及皂素，可预防蛀牙，并有止痛作用。
中国人在2000多年前就懂得保护牙齿的重要。《史记·仓公传》中就批出引起龋齿的原因是 “食而不漱”。《礼记》中：“鸡初鸣，咸盥嗽”就说明人们已有了漱口的习惯。古人清理口腔和牙齿用手指和柳枝。敦煌壁画《劳度叉头圣图》中，画有一和尚，蹲在地上，左手持漱口水瓶，用右手中指揩前齿。在唐代，人们用柳枝做成刷，蘸药水揩齿。宋代，有人主张每日早晚用柳枝揩牙两次，元代正式有 “牙刷”一词，郭玉诗中云： “南洲牙刷寄头日，去垢涤烦一金值。”元代社会上层人物用牙刷，一般人还是用柳枝，和中草药研制成的揩齿粉末刷牙，另据考古发现，我国1000多年前辽代古墓中出土了两支骨制牙刷柄。
1498年，当一个新的世纪就要出现在人类的地平线上的时候，中国的皇帝发明了牙刷。一查纪元表，1498年是明孝宗治下，那就是说，是明朝孝宗皇帝发明了牙刷。那牙刷是用猪鬃镶嵌在骨头上制成的。牙刷一经问世，久经辗转，传到了欧洲，并在那里广受欢迎。然而，牙刷造价昂贵，只有王公贵族才能消受，一般大众只能一旁羡慕[2] 。之后一直到了19世纪30年代，杜邦公司开始制造合成纤维（尼龙），用尼龙做刷毛的新一代牙刷才开始诞生，牙刷这时候才成了大路货，飞入寻常百姓家。可见我国比欧洲要早600多年就有了类似现代的牙刷。
在欧洲，牙刷是由英国皮匠威廉·艾利斯于1780年在伦敦首先发明的。威廉·艾利斯因犯煽动骚乱罪而被伦敦当局逮捕，随后又被投入臭名昭著的新门监狱。他和大多数囚犯不同，善于用自己的脑子思考问题。一天清晨，他正按通常的方式用小布片擦洗自己的牙齿，一个念头突然闯进了他的脑海：假如用一把小刷子来刷牙齿，是不是比用布擦牙齿更方便也更有效呢？吃晚饭时，他将一根肉骨头偷偷装入口袋带回自己的囚室，又向一个挺友好的看守要了一些猪鬃。这天夜里，他把骨头磨成一根细棒，在上面钻了些小孔，然后将猪鬃一束束地插进小孔，并将它们修剪整齐。就这样，世界上的第一把牙刷在监狱里诞生了。离开监狱后，艾利斯办起了自己的牙刷厂，他获得了很大的成功，因为人们都愿意用牙刷来代替原先的小布片。现在艾利斯创立的公司仍在生产牙刷。
关键词：电动 支架 有限元分析
Abstract
A toothbrush is a brush for cleaning teeth. Generally when brushing your teeth with toothpaste will clean the teeth on the toothbrush, the toothbrush is essential for daily life. Human ancestors had a habit of mouthwash, brush your teeth. In the 3000 BC Sumerian city-state king Uhl's tomb was found in the earliest use of oral cleaning tools -- threaded rods, one can use for two weeks. Oral cleaning dentifrice with animal ashes in the people of ancient Greece and Rome, some primitive tribes with charcoal, salt water, fine sand, the branch to clean teeth. One end of a brush to clean teeth, and to brush your teeth, called Miswak, is a kind of natural toothbrush, according to scientists, this branch of fluoride and saponin can prevent tooth decay, and the analgesic effect.
People in China 2000 years ago to protect the teeth is important. "Records of the historian, Cang Gong biography" in the group of the reasons for the cause dental caries is "fresh and not shu". "The book of Rites": "chicken early Ming, salty and cough" that people have the habit of mouthwash. The ancients clean mouth and teeth with your fingers and willow. Dunhuang murals "work of the fork head Santo", with a picture of a monk, squatting on the ground, the left hander mouthwash bottle, with the middle finger of the right hand to wipe the teeth. In the Tang Dynasty, people Panicum caused brush, dipped in syrup Kai teeth. The Song Dynasty, people sooner or later that day with two teeth Panicum, Yuan Dynasty official "toothbrush", Guo Yushi says: "the South Island toothbrush send head, go wash out a gold value." Toothbrush with the social elites, most people still use switchgrass, brushing and Chinese herbal medicine developed his tooth powder, according to archaeological discoveries in China 1000 years ago, the Liao Dynasty tomb unearthed in two bone toothbrush.
In 1498, when a new century will appear in the human on the horizon, China emperor invented toothbrush. Check the era, 1498 is the Hongzhi emperor governance, that is to say, is the emperor of the Ming Dynasty emperor Xiaozong invented toothbrush. The toothbrush with bristles embedded in the bone. The toothbrush by the advent of a well traveled, spread to Europe, where it is popular. However, the toothbrush is expensive, only the nobles to endure, the general public can only admiration [2]. Until after the 30's of the nineteenth Century, the DuPont Co began manufacturing synthetic fiber (nylon), as a new generation of toothbrush bristles of the toothbrush with nylon before birth, when it became popular, flying into the homes of ordinary people. Visible in China than in Europe as early as 600 years will have a similar modern toothbrush.
In Europe, the toothbrush is by the British man William Ellis in London in 1780 invented the first. William Ellis guilty of sedition crime and was arrested in London, Newgate prison and was put into the infamous. He and most of the prisoners, is good at using his brain. One day early in the morning, he was in the usual manner with a piece of cloth and cleaning their teeth, an idea suddenly came into his mind: if you use a small brush to brush the teeth, cleaning teeth Shi Bushi than with more convenient and more effective? For dinner, he will be a meat bones secretly pocket back to his cell, but also to some bristles to a friendly guard. That night, he put the bones into a thin rod, drill some holes in it, then the bristle bundles inserted into the holes, and they will be trimmed. In this way, the first toothbrush in the world was born in prison. After leaving prison, Ellis set up his toothbrush factory, he achieved great success, because people are willing to use to replace the original toothbrush a piece of cloth. Now Ellis founded the company is still in production.
a目 录
摘 要 1
目 录 3
第一章 绪论 5
1.1 牙刷的意义和特点 5
1.2 便携牙刷方案对比 5
1.3便携净牙器主要部件介绍 6
1.3.1 电机? 7
1.3.2 按钮 8
1.3.3 电控部件? 9
1.3.4 密封原件? 10
1.4 支架设计 11
1.4.1支架的作用 11
1.4.2支架的结构设计 12
1.4.3支架力学分析 12
1.6电动工作原理和组成 19
１.6.1工作原理 19
1.6.2电动系统的基本组成 20
1.7电动系统优缺点 20
1.8 研究的内容 21
第二章 电动牙刷原理的设计 22
2.1 明确技术要求 22
2.2 执行元件的配置确定及动作顺序 22
2.3 确定电动系统主要参数 23
2.3.1 计算和确定电动机主要结构尺寸 23
2.3.2 计算电动机所需功率 24
2.4电动系统图的拟定 25
2.4.1制定电动回路方案 25
2.4.2原理草图的绘制 26
2.5 元件的选型与设计 26
2.5.1 电动机的选择 27
2.5.2电动按钮的选择 28
2.5.3电动辅助元件及工作介质的选择 29
2.6 前景展望 29
第三章 设计中的不足及要注意的问题 30
3.1 设计中的不足之处 30
3.2 使用电动系统要注意的问题 30
参考文献 31
设计总结 32