Coder

The utility model discloses a coder, be in including chassis, setting main shaft, the cover at chassis center are in just be located on the main shaft chassis magnetic ring, connection on the surface is in read head on the magnetic ring, the chassis is made by the stratified material follow the antistatic backing that connects gradually, protect against radiation layer, flame retardant coating, foaming concrete thermal insulating layer, waterproof layer in the extroversion, the inside wiring duct that is provided with in chassis. This coder's high, the durability ability height of resolution ratio. 本实用新型公开了种编码器，包括底盘、设置在所述底盘中心的主轴、套在所述主轴上且位于所述底盘表面上的磁环、连接在所述磁环上的读头，所述底盘由层状材料制成，包括从外向内依次连接的防静电层、防辐射层、防火层、发泡混凝土保温隔热层、防水层，所述底盘内部设置有布线管道。本编码器的分辨率高、耐用性能高。