Sperrvorrichtung.

摘要

A locking mechanism (10) for demountably securing a solenoid valve assembly (14) within a receptacle (13) in a wall (11) of a transmission housing (12) is disclosed. A retention means (35) is provided on a housing (22) of the solenoid valve assembly (14) which co-operatively interacts with various blocking faces (31,32,33) on a pillar means (25) present on the transmission housing (12) and located adjacent to the receptacle (13). A stop lug (45A), an engaging surface (43A) and a latching dog (55A) are each present on the retention means (35). First (31A), second (32A) and third (33A) blocking faces are present on the pillar means (25). Engagement of the stop lug (45A) with the first blocking face (31A) limits the angular range through which the solenoid valve assembly (14) may be rotated within the receptacle (13). When the stop lug (45A) engages the first blocking face (31A), the engaging surface (43A) is disposed in opposition to the second blocking face (32A) to preclude withdrawal of the solenoid valve assembly (14) from the receptacle (13). Engagement of the latching dog (55A) with the third blocking face (33A) normally precludes retro-rotation of the solenoid valve assembly (14) within the receptacle (13). Biasing means (50A) permits selective displacement of at least the latching dog (55A) out of engagement with the pillar means (25) to permit selective rotation, and retro-rotation, of the solenoid valve assembly (14) within the receptacle (13) to operate the locking mechanism (10).