The pyrotechnic actuator (1) comprises a tubular housing (2) and an ignition device (21), and a piston with a piston block (4a) and a piston rod (4). The piston block (4a) is moved within the housing (2) from an initial position to an end position by an ignition device (21). An integrated sealing element (5) is arranged at the end, away from the ignition device (21), of the shell (2) and located between the piston rod (4) and the shell (2). The piston rod (4) penetrates through the sealing element (5), a step (14) is formed in the area, and the outer diameter (13) on the side away from the ignition device (21) is smaller than the outer diameter (12) on the side close to the ignition device (21). The sealing element (5) is provided with a corresponding step (27) which is arranged on the step (14) of the piston rod (4), and sealing is achieved through axial preloading. When the actuator is triggered, the sealing element (5) is torn.
烟火致动器(1)包括管状外壳(2)和点火装置(21),还有带活塞块(4a)和活塞杆(4)的活塞。活塞块(4a)在外壳(2)内通过点火装置(21)从初始位置移动到终止位置。外壳(2)远离点火装置(21)的一端有一体式密封元件(5),位于活塞杆(4)和外壳(2)之间。活塞杆(4)穿过密封元件(5),在该区域形成阶梯(14),且远离点火装置(21)一侧的外径(13)小于靠近点火装置(21)一侧的外径(12)。密封元件(5)有对应阶梯(27),安装在活塞杆(4)的阶梯(14)上,通过轴向预压实现密封。致动器触发时,密封元件(5)被撕裂。
Pyrotechnic actuator
烟火致动器
2024-08-02
Patent
Electronic Resource
Chinese
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