The invention relates to the field of injection molding, and discloses an injection molding method of a capacitive sensor, the sensor is subjected to at least two times of injection molding, the sensor is at least divided into a PCBA board, an inner mold and an outer mold from inside to outside through the method, the PCBA board is provided with a capacitance area, the capacitance area is configured to protrude out of the plane where the PCBA board is located, and the outer mold is configured to protrude out of the plane where the PCBA board is located. The inner mold is provided with a positioning supporting point, during injection molding, the inner mold is firstly subjected to injection molding, the inner mold wraps the area, except the capacitor area and the supporting positioning point of the inner mold, of the PCBA board, then the outer mold is subjected to injection molding, and the outer mold completely wraps the remaining area, not wrapped by the inner mold, of the inner mold and the inner mold. The design of two-time low-pressure injection molding is adopted, effective combination of the first-time injection molding material and the second-time injection molding material is achieved, and according to actual measurement verification, 300-hour 60-DEG C water soaking verification and IPX9K waterproof requirements can be met.
本发明涉及注塑领域,公开了电容传感器的注塑方法,该传感器至少经过两次注塑成型,该方法将该传感器至少从内到外分为PCBA板和内模以及外模三部分,所述PCBA板具有电容区域,所述电容区域被配置为突出该PCBA板所在的平面,所述内模具有定位支撑点,在注塑成型时,首先注塑内模,所述内模把PCBA板除电容区域和内模支撑定位点以外的区域都包覆,然后再注塑外模,所述外模把上述内模没有包覆的剩余部分的区域以及内模完全包覆。采用两次低压注塑的设计,实现第一次注塑及第二次注塑材料的有效结合,实测验证,可通过300小时的60°C泡水验证及IPX9K防水要求。
Injection molding method of capacitance sensor, Bluetooth capacitance sensor, handlebar and vehicle
电容传感器的注塑方法、蓝牙电容传感器、车把手及车
2023-09-22
Patent
Electronic Resource
Chinese
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / E05B LOCKS , Schlösser |