초록 ▼

In a telescopically adjustable support, an axially divided elastic sleeve extends over outer and inner tubes and has projections engaging the inner tube through apertures in the outer tube. The sleeve can be tightened to the inner tube by a coupling nut. The radial length of the projections is large

In a telescopically adjustable support, an axially divided elastic sleeve extends over outer and inner tubes and has projections engaging the inner tube through apertures in the outer tube. The sleeve can be tightened to the inner tube by a coupling nut. The radial length of the projections is larger than the radial spacing between the external tube faces so that additional clamping is brought about by the sleeve at a spacing from the sleeve end adjacent the inner tube, whereby clamping is effected at two spaced and separated areas to achieve a particularly rigid connection of the tubes.

대표청구항 ▼

1. A telescopically adjustable support, particularly for a camera tripod, comprising at least two telescopically engageable tubes of which the outer tube has circumferentially disposed apertures at the push-on end engaging over the inner tube, axially divided elastic locking means which are provided

1. A telescopically adjustable support, particularly for a camera tripod, comprising at least two telescopically engageable tubes of which the outer tube has circumferentially disposed apertures at the push-on end engaging over the inner tube, axially divided elastic locking means which are provided on the push-on end of the outer tube, extend over the zone of engagement of the inner and outer tubes to surround same and have projections engaging through the apertures of the outer tube as well as clamping means for engaging the inner tube beyond the outer tube, and fixing means cooperating with the locking means and acting on the clamping means thereof, characterized in that the locking means comprise a single one-piece locking sleeve having the projections that engage through the apertures in the outer tube and having the clamping means, and that, for additionally clamping the inner tube with the aid of the projections, the radial length of the projections of the sleeve engaging through the apertures in the outer tube is larger than the radial spacing between the external surfaces of the inner and outer tubes, thus a zone free of clamping being provided between the clamping means and the projections of the sleeve. 2. The support of claim 1, wherein the clamping means of the locking sleeve comprise a plurality of clamping jaws formed by axial slits at several positions in the section of the locking sleeve surrounding the inner tube beyond the outer tube. 3. The support of claim 1, wherein the part of the locking means having the projections and enveloping the outer tube is provided with an external screwthread and the fixing means are in the form of a nut which is engageable with the external screwthread and has oblique faces co-operating with the clamping means engaging the inner tube beyond the outer tube, and wherein the locking sleeve at the end of the external screwthread remote from the clamping means co-operates with the nut by way of an oblique surface arrangement to press the projections against the inner tube. 4. A telescopically adjustable support, particularly for a camera tripod, comprising at least two telescopically engageable tubes of which the outer tube has circumferentially disposed apertures at the push-on end engaging over the inner tube, axially divided elastic locking means which are provided on the push-on end of the outer tube, extend over the zone of engagement of the inner and outer tubes to surround same and have projections engaging through the apertures of the outer tube as well as clamping means for engaging the inner tube beyond the outer tube, and fixing means cooperating with the locking means and acting on the clamping means thereof, characterized in that the locking means comprise a single one-piece locking sleeve having both the projections that engage through the apertures in the outer tube and also having the clamping means, and that, for additionally clamping the inner tube with the aid of the projections, the radial length of the projections of the sleeve engaging through the apertures in the outer tube is larger than the radial spacing between the external surfaces of the inner and outer tubes, the part of the locking means having the projections and enveloping the outer tube is provided with an external screwthread and the fixing means are in the form of a nut which is engageable with the external screwthread and has oblique faces cooperating with the clamping means engaging the inner tube beyond the outer tube, and wherein the locking sleeve at the end of the external screwthread remote from the clamping means cooperates with the nut by way of an oblique surface arrangement to press the projections against the inner tube, and an annular bead is provided at the end of the external screwthread of the locking sleeve that is remote from the clamping means. 5. A telescopically adjustable support, particularly for a camera tripod, comprising at least two telescopically engageable tubes of which the outer tube has circumferentially disposed apertures at at the push-on end engaging over the inner tube, axially divided elastic locking means which are provided on the push-on end of the outer tube, extend over the zone of engagement of the inner and outer tubes to surround same and have projections engaging through the apertures of the outer tube as well as the clamping means for engaging the inner tube beyond the outer tube, and fixing means cooperating with the locking means and acting on the clamping means threof, characterized in that the locking means comprise a single one-piece locking sleeve having both the projections that engage through the apertures in the outer tube and also having the clamping means, and that, for additionally clamping the inner tube with the aid of the projections, the radial length of the projections of the sleeve engaging through the apertures in the outer tube is larger than the radial spacing between the external surfaces of the inner and outer tubes, and an annular groove is provided between the clamping means and the section of the locking sleeve that comes to lie on the outer tube. 6. A telescopically adjustable support, particularly for a camera tripod, comprising at least two telescopically engageable tubes of which the outer tube has circumferentially disposed apertures at the push-on end engaging over the inner tube, axially divided elastic locking means which are provided on the push-on end of the outer tube, extend over the zone of engagement of the inner and outer tubes to surround same and have projections engaging through the apertures of the outer tube as well as clamping means for engaging the inner tube beyond the outer tube, and fixing means co-operating with the locking means and acting on the clamping means thereof, characterized in that the locking means comprise a single one-piece locking sleeve having both the projections that engage through the apertures in the outer tube and also having the clamping means, and that, for additionally clamping the inner tube with the aid of the projections, the radial length of the projections of the sleeve engaging through the apertures in the outer tube is larger than the radial spacing between the external surfaces of the inner and outer tubes, the clamping means have longitudinal grooves on the inside.