The invention discloses a sealing cover (2) used for sealing a cavity (1). The sealing cover (2) comprises a sealing structure (21) and a sealing structure (22), wherein the sealing structure (21) is used for being in sealing joint with an opening of the cavity; the vent hole (22) penetrates through the sealing cover to extend, and is used for keeping fluid communication between the internal space and the outside when the sealing cover is in sealing joint with the opening of the cavity under the condition that the internal space of the cavity can only be in fluid communication with the outside through the opening; wherein the vent hole is configured to form a sealing structure for sealing the vent hole by hot-melting a material in a vent hole area, and the sealing cover is configured to at least restrain a molten material for solidifying to form the sealing structure from flowing towards the internal space along the vent hole during hot-melting sealing of the vent hole. The invention further relates to a corresponding closed housing (3), to a corresponding transmission unit (4) for a wiper blade, and to a corresponding wiper blade. According to certain exemplary embodiments of the present invention, complete sealing of the vent can be ensured and undesired flow of molten material can be prevented.
本发明公开了一种用于封闭腔体(1)的封盖(2),包括:用于与腔体的开口密封接合的密封结构(21);和贯穿封盖延伸的通气孔(22),在腔体的内部空间仅能通过开口与外界流体连通的情况下,通气孔用于在封盖与腔体的开口密封接合时使内部空间与外界之间保持流体连通;其中,通气孔被配置成能够通过热熔通气孔区域的材料形成密闭通气孔的密闭结构,且封盖被配置成在热熔密闭通气孔期间至少能够约束用于凝固形成密闭结构的熔融材料沿通气孔朝向内部空间流动。还公开了一种相应的封闭箱体(3)、一种相应的用于雨刮器的传动单元(4)及一种相应的雨刮器。根据本发明的某些示例性实施例,可确保通气孔的完全密封和防止熔融材料的非期望流动。
Sealing cover, closed box body, transmission unit for windscreen wiper and windscreen wiper
封盖、封闭箱体、用于雨刮器的传动单元以及雨刮器
2023-03-21
Patent
Electronic Resource
Chinese
IPC: | B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen |
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