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 - 3 . (canceled) 
   
   
       1 . A locking device, comprising:
 a first element and a second element, the first element having a lower free end being extandable and axially movable from a first end of the second element in a first direction, the first element being slidable inside the second element,   a locking member disposed at a lower region of the second element for locking the first element relative to the second element,   an actuating member extending in a second direction away from the first end of the second element towards a second opposite end of the second element, the actuating member extending along the second element, the second direction being opposite the first direction, an operating member in operative engagement with the actuating member and axially remote from the locking member, the locking member being operable by the operating member via the actuating member, the locking member having 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 wherein the tongue members engage a contact surface of the first element to axially fix the first element relative to the second element in a locked position, and   the tongue members comprising wedge-engaging surfaces cooperating with an engaging member in connection with the actuating member for releasing an engagement between the tongue members and the contact surface of the first element, the wedge-engaging surfaces being substantially tangentially directed wherein when the operating member is actuated to axially move the actuating member and the engaging member, sliding of the engaging member along the wedge engaging surfaces radially releases the engagement between the tongue members and the contact surfaces of the first element allowing the first element to axially move relative to the second element in an unlocked position.   
   
   
       2 . A locking device, comprising:
 a first element and a second element,   the first element having a lower free end extendable and axially movable from a first end of the second element in a first direction, the first element being slidable inside the second element,   a locking member positioned at a lower region of the second element for locking the first element relative to the second element,   an actuating member extending in a second direction away from the first end of the second element towards a second opposite end of the second element, the actuating member extending along the second element, the second direction being opposite the first direction,   an operating member in operative engagement with the actuating member and axially remote from the locking member, the locking member being operable by the operating member via the actuating member,   the locking member having 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 radially inward direction wherein the tongue members engage the contact surface of the first element to axially fix the first element relative to the second element in a locked position, and   the tongue members comprising wedge-engaging surfaces cooperating with an engaging member disposed on the actuating member for releasing an engagement between the tongue members and the contact surface of the first element, the wedge-engaging surfaces being substantially tangentially directed wherein when the operating member is actuated to axially move the actuating member and the engaging member in the second direction, sliding of the engaging member along the wedge engaging surfaces radially releases the engagement between the tongue members and the contact surfaces of the first element permitting the first element to axially move relative to the second element in an unlocked position.   
   
   
       3 . A locking device, comprising:
 a first element and a second element, the first element having a lower free end extendable and axially movable from a first end of the second element in a first direction, the first element being slidable inside the second element, a locking member disposed at a lower region of the second element for locking the first element relative to the second element,   an actuating member extending in a second direction away from the first end of the second element towards a second opposite end of the second element, the actuating member extending along the second element, the second direction being opposite the first direction, an operating member in operative engagement with the actuating member and axially remote from the locking member, the locking member being operable by the operating member via the actuating member, the locking member having 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 wherein the tongue members engage a contact surface of the first element to axially fix the first element relative to the second element in a locked position, and   the tongue members comprising wedge-engaging surfaces cooperating with an engaging member in connection with the actuating member for releasing an engagement between the tongue members and the contact surface of the first element, the wedge-engaging surfaces being substantially tangentially directed wherein when the operating member is actuated to axially move the actuating member and the engaging member, sliding of the engaging member along the wedge engaging surfaces radially releases the engagement between the tongue members and the contact surfaces of the first element permitting the first element to axially move relative to the second element in an unlocked position.