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WO2001090587A1 - Tube a longueur variable - Google Patents

Tube a longueur variable Download PDF

Info

Publication number
WO2001090587A1
WO2001090587A1 PCT/EP2001/003815 EP0103815W WO0190587A1 WO 2001090587 A1 WO2001090587 A1 WO 2001090587A1 EP 0103815 W EP0103815 W EP 0103815W WO 0190587 A1 WO0190587 A1 WO 0190587A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
inner rod
rod
guide piece
pipe according
Prior art date
Application number
PCT/EP2001/003815
Other languages
German (de)
English (en)
Inventor
Klaus Lenhart
Original Assignee
Klaus Lenhart
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE20022024U external-priority patent/DE20022024U1/de
Application filed by Klaus Lenhart filed Critical Klaus Lenhart
Publication of WO2001090587A1 publication Critical patent/WO2001090587A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/105—Telescoping systems locking in discrete positions, e.g. in extreme extended position
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/22—Ski-sticks
    • A63C11/221—Ski-sticks telescopic, e.g. for varying the length or for damping shocks

Definitions

  • the present invention relates to a length-adjustable tube according to the preamble of claim 1.
  • Length-adjustable tubes are used in a variety of ways, for example for ski or trekking poles as walking sticks, walking sticks or crutches, as tripods for film and photo equipment, as handles for household or garden areas, etc.
  • the guide piece is a cylindrical component provided with an outer intermediate shoulder, which is held at one end in the inner tube and has a radial recess for the locking device on its other end region protruding from the inner tube provided in the form of the spring-loaded locking pin. Especially when the length-adjustable tube reaches its maximum
  • Length adjustment range is extended, there is no longer a relative stiffness between the two tube elements (inner tube and outer tube) despite the additionally leading end sleeve.
  • rattling can occur within the outer tube due to a radial relative movement of the guide piece.
  • the object of the present invention is to provide a length-adjustable tube of the type mentioned at the outset, which enables a stable and play-free mounting of the inner rod and outer tube even in the region of the maximum in the extended length.
  • the features specified in claim 1 are provided in a length-adjustable tube of the type mentioned.
  • a guidance free of play and stable transverse to the axial direction is achieved in that the guide head is under radial prestress in the outer tube and is located away from the locking pin in such a way that it forms the free end of the inner rod.
  • a preferred embodiment of a radially acting preload of the guide head is given by the features according to claim 2 and / or 3.
  • a shock absorber is provided between the guide piece and the inner rod, as the features according to claim 8 show.
  • Embodiments of the shock absorber connected to the guide piece result from the features of one or more of claims 9 to 14.
  • Figure 3 is a corresponding to Figure 1
  • Figure 4 in a partially broken representation of the guide piece of the shock absorber according to Figure 3 with a first position of the damper rod.
  • the length-adjustable tube 11 or 11 'shown only in certain areas in the drawing has a tubular first or inner rod 12 and a second or outer tube 13, into which the inner rod 12 can be telescopically extended and retracted and gradually by a positive locking connection in a selected position is definable.
  • the tubular inner rod 12 is provided with a locking device 14 or 14 ′, with the aid of which it can be fixed in the outer tube 13 such that both axial and torsional forces can be transmitted from the inner rod 12 to the outer tube 13 or vice versa.
  • Inner rod 12 and outer tube 13 are, for example, metal tubes; it is also possible that Form inner rod 12 as a full carbon rod and outer tube 13 as a metal tube.
  • the length-adjustable tube 11, 11 ' is, for example, part of a ski, trekking or hiking stick.
  • Locking device 14 is a one-piece guide piece 16 made of plastic.
  • the guide piece 16 has a solid cylinder region 17, into which a radial blind hole 18 is machined, the length of which is greater than the radius of the solid cylinder 17.
  • a helical spring 19 is inserted into the blind hole 18 and a detent pin 21 in this helical spring 19, which is seated with its approximately central collar 22 on one end of the helical spring 19.
  • the free end region of the solid cylinder 17 is provided with two diagonally opposite radial blind holes 23, 24, the length of which is a fraction of the length of the blind hole 18.
  • the guide piece 16 also has a guide head 26 at the front free end, which is hollow cylindrical and the outer peripheral surface 27 is spherical.
  • the hollow cylindrical guide head 26 is provided with four axial slots 28 which are evenly distributed over the circumference. In this way, the guide head 26 is arranged radially elastic and at a sufficient axial distance from the locking pin 21.
  • An axial shoulder 29 is provided between the solid cylinder 17 and the guide head 26.
  • the outer diameter of the solid cylinder 17 corresponds to the inner diameter of the inner rod 12; the outer diameter of the guide head 26 is approximately equal to the outer diameter of the inner rod 12 at the end regions, while the maximum outer diameter of the radially movable, spherical outer surface 27 is somewhat larger than the outer diameter of the inner rod 12 and in particular somewhat larger than the inner diameter of the outer tube 13, so that the outer surface 27 abuts the inner surface of the outer tube 13 under radial prestress.
  • the outer surface 27 can be designed like a friction lining.
  • the guide piece 16 is inserted into the one insertion end of the inner rod 12 facing the outer tube 13 to such an extent that the axial shoulder 29 bears against the annular face of the inner rod 12.
  • the spring-loaded locking pin 21 is snapped into a radial bore 31 of the inner rod 12 arranged at a corresponding point.
  • the radial bore 31 is smaller in diameter than the collar 12 of the locking pin 21, so that the collar 22 bears against the inner surface of the inner rod 12 under the pressure of the helical spring 19.
  • the inner rod 12 is shaped at the corresponding diagonally opposite points 32, 33 radially inward into the radial blind hole 23, 24, so that there is a positive locking.
  • the outer tube 13 is equipped at its end overlapping the inner rod 12 with a tube end sleeve 36.
  • the tube end sleeve 36 has a sleeve part 37 which is pushed onto the outer tube 13 and is, for example, adhesive or fastened by means of an interference fit.
  • a conical part 38 adjoins the sleeve part 37 in one piece, which overlaps the annular face 39 of the outer tube 13 in a form-fitting manner.
  • the outer diameter of the conical part 38 is equal to the outer diameter of the sleeve part 37, its inner diameter is approximately equal to the outer diameter of the inner rod 12 to be inserted whose diameter is slightly larger than the outer diameter of the locking pin 21 of the locking device 14 held on the inner rod 12.
  • the guide piece 16 is stationary in one end of a pipe piece held, which is pushed with its other end onto the solid carbon rod and fixed in place.
  • the locking device in the form of the locking pin is included in the short pipe section mentioned.
  • the locking device 14 'provided on the length-adjustable tube 11' is likewise provided with a guide piece 16 'which engages in the blind hole 18 Coil spring 19 and the locking pin 21 receives.
  • the guide piece 16 ' is not provided with the short radial blind holes 23, 24 but with an axial threaded blind hole 25 which is incorporated in the solid cylinder 17 and ends in front of the blind hole 18.
  • the guide piece 16 ' is surrounded by a tube section 30, the outer and inner diameter of which corresponds approximately to that of the inner rod 12 and whose length is approximately equal to the length of the full cylinder 17 of the guide piece 16'.
  • the pipe section 30 has a radial bore 31 'through which the locking pin 21 penetrates under the action of the helical spring 19.
  • the further features of the guide piece 16 ′ are the same as those of the guide piece 16.
  • the guide piece 16 ' is not directly connected to the inner rod 12 but via a shock absorber 45.
  • a damper rod 46 is screwed at one end into the axial blind hole 25 of the guide piece 16 'and is held securely by a lock nut 47 which lies against the solid cylinder 17.
  • the shock absorber 45 also has a sliding bushing sleeve 48 made of plastic, which is axially and circumferentially fixed, for example notched, pressed in and / or glued, at its end region 51 provided with a blind hole 49 in the inner rod 12.
  • the opposite end of the sliding bushing sleeve 48 is provided with a collar 52 which bears against the annular face of the inner rod 12.
  • three pairs of diagonally opposite grooves 53, 54 and 55 are provided in the sliding bushing sleeve 48, which extend axially along the sliding bushing sleeve 48 and are arranged uniformly distributed over the inner circumference of the sliding bushing sleeve 48. Since three pairs of grooves are provided in this exemplary embodiment, they are each offset by 60 ° to one another. The pairs of grooves 53, 54, 55 have different axial lengths, the grooves of each pair being the same length. It is understood that the distribution of the lengths of the grooves 53, 54, 55 can be arbitrary.
  • the damper rod 46 which is cylindrical in cross section, is guided axially displaceably in the sliding bushing sleeve 48. At the end portion facing away from the guide piece 16 ', the damper rod 46 has a stop in the form of the lock nut
  • a compression spring element 56 is arranged, which is a compression coil spring in the embodiment.
  • the end of the metallic damper rod 46, which is located within the sliding bushing sleeve 48, is provided with a transverse bore 57 in which a bolt 58, which penetrates the damper rod 46 and projects on both sides, is held loosely.
  • This cross bolt 58 is in its dimensions
  • the transverse bolt 58 is pressed against the base of the grooves 53 under the tension of the compression spring 56.
  • the compression spring 56 is close to its relaxation state, ie it has a small output spring force, so that a relatively large spring travel is possible for shock absorption. If the damper rod 46 is moved by an axial relative movement of the two rod or tube parts 12 and 13 in the direction of arrow A with respect to the sliding bushing sleeve 48, the cross bolt 58 passes from the grooves 53 into the blind hole 49, in which state the damper rod 46 by relative Twisting (in the circumferential direction) of the two rod or tube parts 12, 13 can be freely rotated to each other over 360 °.
  • a rotation of ⁇ 60 ° takes place in an area above the pair of grooves 54 or the pair of grooves 55.
  • the cross bolt 58 comes into one of these pairs of grooves 54 or under the action of the compression spring 56 55 to the bottom.
  • the compression spring 56 is almost completely tensioned, ie it has a large output spring force, so that the length-adjustable tube 11 'has only minimal damping. If the transverse pin 58 is inserted into the grooves 54 of medium length, a damping characteristic of the shock absorber 45 which is harder than the starting position is achieved.
  • the cross section of tubes running into one another can be ovalized or polygonal or elliptical, the guide parts having a corresponding non-circular cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

L'invention concerne un tube (11) à longueur variable comprenant les éléments suivants : un tube extérieur (13) ; un tube intérieur (12) insérable de manière télescopique dans le tube extérieur (13) pour ajuster la longueur du tube ; un dispositif de verrouillage (14) disposé à l'extrémité insérable du tube intérieur (12) pour maintenir ce dernier dans le tube extérieur (13), ce dispositif se présentant sous la forme d'une broche (21) à ressort encliquetable dans des orifices (41) du tube extérieur (13) ; un élément de guidage (16) fixé sur l'extrémité libre du tube intérieur (12), elle-même disposée dans le tube extérieur (13) ; un manchon de fermeture (36), disposé à l'extrémité du tube extérieur (13) dans laquelle s'insère le tube intérieur (12), dont l'extrémité (38) de guidage, qui dépasse l'extrémité du tube extérieur, a un diamètre intérieur pratiquement égal au diamètre extérieur du tube intérieur (12). L'invention vise à réaliser un logement stable et exempt de jeu des tubes intérieur et extérieur, même lorsqu'ils sont ouverts au maximum de leur longueur. A cet effet, l'élément de guidage (16) est doté, sur son extrémité insérable, d'une tête de guidage (26) logée de manière élastique et radiale sur le pourtour intérieur du tube extérieur (13), à une certaine distance axiale de la broche (21) à ressort.
PCT/EP2001/003815 2000-05-25 2001-04-04 Tube a longueur variable WO2001090587A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE20009458 2000-05-25
DE20009458.0 2000-05-25
DE20022024U DE20022024U1 (de) 2000-05-25 2000-12-28 Längenverstellbares Rohr
DE20022024.1 2000-12-28

Publications (1)

Publication Number Publication Date
WO2001090587A1 true WO2001090587A1 (fr) 2001-11-29

Family

ID=26056297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/003815 WO2001090587A1 (fr) 2000-05-25 2001-04-04 Tube a longueur variable

Country Status (1)

Country Link
WO (1) WO2001090587A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033348A1 (fr) * 2007-09-11 2009-03-19 Zhaohuang Wang Support télescopique
EP2140842A1 (fr) 2008-07-03 2010-01-06 Jes Bech Müller Appareil pour appliquer une traction à un pénis
WO2010000845A1 (fr) * 2008-07-03 2010-01-07 Mueller Jes Bech Appareil destiné à appliquer une traction à un pénis
CH702491B1 (de) * 2008-04-04 2011-07-15 Lekisport Ag Längenverstellmechanismus am Stockgriff.
AU2013205194B2 (en) * 2012-08-27 2015-11-19 Enviro Framing Systems International A lock for a telescopic leg
CN107932446A (zh) * 2017-12-28 2018-04-20 重庆臻展热处理有限公司 宽度可调式承载架

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE181026C (fr) *
FR1213226A (fr) * 1959-01-08 1960-03-29 Pied télescopique pour support tel que trépied ou autre
US4385849A (en) * 1981-02-02 1983-05-31 Crain Enterprises, Inc. Extensible and retractable rod
US4809725A (en) * 1986-02-12 1989-03-07 Patrick Champigny Telescopic crutch and walking stick
US5215291A (en) * 1989-05-06 1993-06-01 Suspa Compart Aktiengesellschaft Gas spring
DE29815589U1 (de) * 1998-08-31 2000-01-13 Likosar, Ferdinand, Dornbirn Gefederter Teleskopstiel für Wisch- und Reinigungsgeräte
WO2000005507A1 (fr) * 1998-07-23 2000-02-03 Invacare Corporation Element monobloc formant bouton-poussoir et systeme anti-cliquetis

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE181026C (fr) *
FR1213226A (fr) * 1959-01-08 1960-03-29 Pied télescopique pour support tel que trépied ou autre
US4385849A (en) * 1981-02-02 1983-05-31 Crain Enterprises, Inc. Extensible and retractable rod
US4809725A (en) * 1986-02-12 1989-03-07 Patrick Champigny Telescopic crutch and walking stick
US5215291A (en) * 1989-05-06 1993-06-01 Suspa Compart Aktiengesellschaft Gas spring
WO2000005507A1 (fr) * 1998-07-23 2000-02-03 Invacare Corporation Element monobloc formant bouton-poussoir et systeme anti-cliquetis
DE29815589U1 (de) * 1998-08-31 2000-01-13 Likosar, Ferdinand, Dornbirn Gefederter Teleskopstiel für Wisch- und Reinigungsgeräte

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033348A1 (fr) * 2007-09-11 2009-03-19 Zhaohuang Wang Support télescopique
CH702491B1 (de) * 2008-04-04 2011-07-15 Lekisport Ag Längenverstellmechanismus am Stockgriff.
EP2140842A1 (fr) 2008-07-03 2010-01-06 Jes Bech Müller Appareil pour appliquer une traction à un pénis
WO2010000845A1 (fr) * 2008-07-03 2010-01-07 Mueller Jes Bech Appareil destiné à appliquer une traction à un pénis
EP2140842B1 (fr) * 2008-07-03 2012-09-12 Jes Bech Müller Appareil pour appliquer une traction à un pénis
US8734324B2 (en) 2008-07-03 2014-05-27 Jbm Holding Apparatus for applying traction to a penis
AU2009265657B2 (en) * 2008-07-03 2015-01-22 Jes Bech Muller An apparatus for applying traction to a penis
AU2013205194B2 (en) * 2012-08-27 2015-11-19 Enviro Framing Systems International A lock for a telescopic leg
CN107932446A (zh) * 2017-12-28 2018-04-20 重庆臻展热处理有限公司 宽度可调式承载架

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