| 摘要 |
A device at a multi-way lever, so-called <<joy-stick>>, comprised for example in a manipulator, comprising a housing (2) and projecting therefrom a control lever (3), which at its end located in the housing is hinged. According to the invention, a sleeve (13) is mounted concentrically about the lever (3), which sleeve (13) at one end is provided with a conic surface (14) intended by action of a spring force on the sleeve (13) to abut a plate (15) with a slide surface (16). The slide surface (16) includes a portion (17) with a conic surface so formed that the conic surface (14) of the sleeve upon abutment to the conic surface of the slide surface (16) is centered with respect to the slide surface to a non-operative position. By the invention a sturdy and simple device is obtained, which simply can be modified with respect to the force required for moving the lever (3) from its non-operative position. Modifications of the cross-sectional profile of the slide surface (16) yield different characteristics with respekt to said force required.
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