The invention discloses a direct relay with double bridge structure, including terminal component, bridge component and magnetic circuit component; the terminal component is located above the bridge component and opposite to the bridge component, and the lower part of the bridge component is movably sleeved in the magnetic circuit component and can be moved up and down; the bridge component includes four moving contacts, upper bridge, lower bridge, bridge pole, bridge spring and four moving contacts. Do not rivet or weld on the upper and lower bridges. After the middle of the upper and lower bridges are overlapped, they are fixed at the top of the bridge pole. The lower end of the bridge pole is movably penetrated into the magnetic circuit component, and the bridge spring is sleeved at the lower part of the bridge pole. Because the bridge component of the invention is a double-bridge direct-acting structure, the original voltage at both ends of the contacts is divided into two intervals, the voltage at both ends of the contacts is reduced, and the arc energy is reduced. The original current at both ends of the contacts is equally divided into two bridges, the current flowing through the contacts is reduced, the arc energy is further reduced, the consumption of the contacts is greatly reduced, and the life of the relay is increased. Life.
【技术实现步骤摘要】
双桥结构的直动式继电器
本专利技术涉及一种电磁继电器,特别是涉及一种双桥结构的直动式继电器。
技术介绍
汽车中的电源多用12VDC,所以现有继电器额定负载电压多为12VDC。随着汽车行业的发展,越来越多的大功率汽车元件被应用到汽车上,12V的电池组已经已经逐渐满足不了这些大功率元件的需求。由于48V系统具有可以搭载大功率元件及减少汽车油耗的优点,已经开始逐步取代原有12V系统被应用于汽车上。随着48V系统的应用,汽车继电器额定负载也由原先的12VDC提高到了48VDC,但是现有的汽车继电器切换不了这么大额定电压和电流。现有汽车继电器通常由磁路系统、接触系统和辅助系统组成。图1A是一种典型的汽车继电器结构示意图。一般的直动式汽车继电器包括磁路组件1’、桥组件2’、端子组件3’。磁路组件1’包括线圈组件11’、U型轭铁12’、平轭铁13’、动铁芯、静铁芯、套;桥组件2’包括桥21’、动触点22’、桥簧、杆23’;端子组件3’包括端子31’、静触点32’。通过线圈激励,驱动动铁芯带动动触点22与静触点32的接触和断开实现继电器的开断功能。触点在接触时,随着负载电压由12VDC提高到48VDC,负载电压提高到200A,现有的汽车继电器会产生很大的热量,超过腔体材料的热变性温度,从而毁坏继电器。触点在断开的时候会产生电弧,且电压越大,电流越大,电弧能量越强,现有汽车继电器,断开的时候熄灭不了48VDC,200A负载产生的电弧,即实现不了继电器的通断功能,还有可能引起继电器的燃烧或爆炸。有的继电器为了提高灭弧能力,加上了磁钢或者密封腔体,大大增加了成本。为了解决以上问 ...
【技术保护点】
1.一种双桥结构的直动式继电器,包括端子组件、桥组件、磁路组件;所述的端子组件位于桥组件的上方且与桥组件相对而设,桥组件的下部活动套置在磁路组件内并可上下移动;其特征在于:所述的桥组件包括四个动触点、上桥、下桥、桥杆、桥簧,二个动触点设置于上桥上,二个动触点设置于下桥上,上桥和下桥中部叠合后固定在桥杆的顶端,桥杆的下端活动穿入磁路组件,桥簧套接在桥杆的下部;所述的上桥和下桥并联在回路上,分担回路的电流,四个动触点分为两组且分别与端子组件上的左、右两对静触点构成单独的间隙并将两组间隙串联在回路上,分担回路电压。
【技术特征摘要】
2017.11.06 CN 20171107797691.一种双桥结构的直动式继电器,包括端子组件、桥组件、磁路组件;所述的端子组件位于桥组件的上方且与桥组件相对而设,桥组件的下部活动套置在磁路组件内并可上下移动;其特征在于:所述的桥组件包括四个动触点、上桥、下桥、桥杆、桥簧,二个动触点设置于上桥上,二个动触点设置于下桥上,上桥和下桥中部叠合后固定在桥杆的顶端,桥杆的下端活动穿入磁路组件,桥簧套接在桥杆的下部;所述的上桥和下桥并联在回路上,分担回路的电流,四个动触点分为两组且分别与...
【专利技术属性】
技术研发人员:安吉鹏,
申请(专利权)人:海拉厦门汽车电子有限公司,
类型:发明
国别省市:福建,35
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