| 摘要 |
This system comprising a base (2) provided in the vicinity of one of its ends with means in the form of jaws (3) for clamping and blocking in position of the system in the rail by pinching the latter between the base (2) and laterally protruding portions (4) of these means in the form of jaws (3), the base (2) and the means in the form of jaws (3) able to be displaced in relation to one another between a mounting/dismounting position of the system in the rail and a blocking position of the system by clamping around the rail, by the intermediary of the means of manoeuvring (6) that can be actuated by an operator, is characterised in that the means of manoeuvring (6) include a slide (7) which can be displaced in the base (2) by the operator and comprising at one end, a surface for manoeuvring (8) by the operator, at the other end, a ramp portion adapted (9) to cooperate with an additional ramp portion (10) of the means in the form of jaws (3) in order to displace the latter in relation to the base between the mounting/dismounting position and the blocking position, and in its intermediate portion, means that can be disengaged (11) for blocking in position of the slide (7) in the base (2) and therefore of the system in relation to the rail.
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