The utility model relates to a novel full plastic speed sensor. It consists of a shell, a rotating shaft, a sheath and a circuit board. The fastening nuts at one end of the shell are molded into a disposable injection molding. The rotating shaft is placed in the shell of the shell, a seal ring is set on the rotating shaft, the sheath is placed on the seal ring, and the shell and the sheath are bonded with the sealant, and the side of the shell is provided with a circuit board cavity. A circuit board is placed in the circuit board cavity, the wall of the cavity of the circuit board cavity is high out of the shell surface, and a seal cover is provided on the line plate cavity. The lower surface and the inner surface of the seal cover are coated with sealant, and the seal cover is tightly locked with the circuit board cavity. The plastic shell is used to replace the aluminum shell to reduce the cost, low cost and low anti-interference ability of the raw materials and equipment of the aluminum shell. The product has dustproof, waterproof, aging resistance, and wide range of working temperature and other technical requirements.
【技术实现步骤摘要】
新型全塑料车速传感器
本技术涉及汽车车速传感器领域,具体地说是一种新型全塑料车速传感器。
技术介绍
随着社会经济的发展,汽车已经走进千家万户。安全驾驶很重要,车速传感器在这之间起到非常重要的作用。车速传感器的输出信号可以是磁电式交流信号,也可以是霍尔式数字信号或者是光电式数字信号。霍尔感应式,其功能实现需要一个转动轴与变速箱连接,转轴上带动一块充入几对磁极的磁铁对霍尔元件进行感应,而转动部分需要放在一个开放的铝壳腔体中,使磁铁转轴组合能够在腔体内自由转动。铝壳传感器传统的工艺为采用压力收口或螺纹锁紧方式,需要有专用设备和专用胎具,且产生的噪音对电子元件环境影响和破坏力很大,会导致收口不严或压力过大,电子件损坏导致传感器失效,故障率高,甚至直接导致产品报废。同时铝制产品成本高,生产周期厂,产品质量和工艺技术等方面不易控制,工序多且复杂,增加生产难度,用户反馈意见较多。
技术实现思路
本技术的目的是要提供一种新型全塑料车速传感器,该传感器传输信号不稳定,产品密封性差,使用周期短,产品材料昂贵等问题。本技术的技术方案是:新型全塑料车速传感器包括外壳、转轴、护套、线路板,所述外壳与外壳一端的紧固螺母为一次性注塑成型,所述转轴放置在外壳的壳体内,转轴上套有密封圈,护套放置在密封圈上,并且用密封胶将壳体和护套粘合,所述壳体侧面设有线路板腔体,线路板腔体内放置线路板,所述线路板腔体四周腔壁高出壳体表面,且在线路板腔体上面设有密封盖,所述密封盖的下表面和内侧面涂刷密封胶,将密封盖与线路板腔体完全卡牢锁紧。本技术的有益效果是:1、本申请传感器用塑料外壳代替铝外壳,减少铝外壳原材 ...
【技术保护点】
一种新型全塑料车速传感器,其特征在于:包括外壳、转轴、护套、线路板,所述外壳与外壳一端的紧固螺母为一次性注塑成型,所述转轴放置在外壳的壳体内,转轴上套有密封圈,护套放置在密封圈上,并且用密封胶将壳体和护套粘合,所述壳体侧面设有线路板腔体,线路板腔体内放置线路板,所述线路板腔体四周腔壁高出壳体表面,且在线路板腔体上面设有密封盖,所述密封盖的下表面和内侧面涂刷密封胶,将密封盖与线路板腔体完全卡牢锁紧。
【技术特征摘要】
1.一种新型全塑料车速传感器,其特征在于:包括外壳、转轴、护套、线路板,所述外壳与外壳一端的紧固螺母为一次性注塑成型,所述转轴放置在外壳的壳体内,转轴上套有密封圈,护套放置在密封圈上,并且用密封胶将壳体...
【专利技术属性】
技术研发人员:孙冬梅,陈铁明,赵兴会,赵占春,崔立宝,朱宝,王世奎,
申请(专利权)人:四平市德嘉电子仪表有限公司,
类型:新型
国别省市:吉林,22
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