Device for relative fixing of elements telescopically displaced in each other

Abstract

A locking device for two units ( 1 ), ( 3 ) displaceable one inside the other, such as the handle of an implement with variable length, comprising a locking member ( 4 ) arranged at one end of the outer element ( 3 ), said locking member ( 4 ) being operated by an operating member ( 5 ) spaced from the locking member ( 4 ) in the direction of the other end of the outer element ( 3 ) via an actuating member ( 7 ) that is displaceable along, or turnable about, an axis parallel with the longitudinal axis of the outer element ( 3 ).

1 . A locking device comprising:
 an inner element and an outer element, the inner element having a lower free end being extendable and axially movable from a first end of the outer element in a first direction, the inner element being slidable inside the outer element,   a locking member for locking the inner element relative to the outer element,   an actuating member extending in a second direction away from the first end of the outer element towards a second opposite end of the outer element, the actuating member extending along the outer element, the second direction being opposite the first direction,   an operating member in operative engagement with the actuating member and remote from the locking member, the locking member being operable by the operating member via the actuating member,   the actuating member being displaceable along, or turnable about, an axis substantially parallel with a longitudinal axis of the outer element,   the locking member having a locking surface biased to the inner element by a spring element providing a biasing force in a radial direction, the biasing force biasing the locking surface to the inner element is constant or increased when the inner element being pressed in the second direction relative the outer element.   
   
   
       2 . A locking device, comprising:
 a first element and a second element, the first element being displaceable relative to the second element,   a locking member disposed at a first end of the second element the locking member having one or more radially displaceable tongue members that are contactable with a contact surface of the first element,   the tongue members being biased towards the first element by a spring element providing a biasing force in a radial direction,   the tongue members comprising surfaces cooperating with an engaging member for releasing a contact between the tongue members and the contact surface of the first element, the surfaces being substantially tangentially directed.   
   
   
       3 . A locking device as claimed in  claim 2  wherein the engaging member comprises a wedge.