EP1949812A1 - Cylindre de positionnement pour une tige télescopique - Google Patents

Cylindre de positionnement pour une tige télescopique Download PDF

Info

Publication number
EP1949812A1
EP1949812A1 EP07250184A EP07250184A EP1949812A1 EP 1949812 A1 EP1949812 A1 EP 1949812A1 EP 07250184 A EP07250184 A EP 07250184A EP 07250184 A EP07250184 A EP 07250184A EP 1949812 A1 EP1949812 A1 EP 1949812A1
Authority
EP
European Patent Office
Prior art keywords
tube section
positioning sleeve
inner tube
surrounding portion
recessed parts
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP07250184A
Other languages
German (de)
English (en)
Other versions
EP1949812B1 (fr
Inventor
Lai Hsin-Yuan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuko Inc
Original Assignee
Fuko Inc
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
Application filed by Fuko Inc filed Critical Fuko Inc
Priority to EP07250184A priority Critical patent/EP1949812B1/fr
Priority to AT07250184T priority patent/ATE515204T1/de
Publication of EP1949812A1 publication Critical patent/EP1949812A1/fr
Application granted granted Critical
Publication of EP1949812B1 publication Critical patent/EP1949812B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B2009/005—Shafts
    • A45B2009/007—Shafts of adjustable length, e.g. telescopic shafts

Definitions

  • the invention relates to a positioning sleeve, more particularly to a positioning sleeve for a telescopic rod.
  • Figures 1 and 2 illustrate a hiking stick or cane incorporating conventional positioning sleeves 3.
  • the hiking stick includes a handle 1, and a cane body 2 fixed to the handle 1.
  • the cane body 2 includes a plurality of interconnected tube sections 201, and a conventional positioning sleeve 3 provided on each of two interconnected tube sections 201. Through telescopic connections of the tube sections 201, the cane body 2 can be extended to a desired length for use and can be shortened for storage.
  • the purpose of the positioning sleeve 3, aside from enhancing an appearance of the connection between interconnected pairs of the tube sections 201, is to retard retraction of the interconnected tube sections 201 and to permit smooth telescopic movement thereof.
  • the positioning sleeve 3 has an inner peripheral surface provided with a plurality of angularly spaced-apart anti-slip strips 301 projecting therefrom.
  • the anti-slip strips 301 provide friction to an inner one of the tube sections 201 so as to retard the movement of the inner tube section 201 to a retracted position.
  • the anti-slip strips 301 of the conventional positioning sleeve 3 can provide frictional positioning of the tube sections 201, the formation of the anti-slip strips 301 requires high accuracy so as to permit frictional fitting of the corresponding tube section 201. As such, a defective rate of the conventional positioning sleeve 3 is high. Further, the anti-slip strips 301 may wear due to frequent use, so that a retardation effect thereof is deteriorated.
  • the object of the present invention is to provide a positioning sleeve for a telescopic rod that can be manufactured easily with a low defective rate and that provides for a good retardation effect, even after long use.
  • a positioning sleeve is adapted to be applied to a telescopic rod, which has an outer tube section and an inner tube section connected telescopically to the outer tube section.
  • the positioning sleeve comprises a sleeve body having a first surrounding portion adapted to surround the outer tube section, and a second surrounding portion adapted to surround the inner tube section.
  • the second surrounding portion has an inner peripheral wall defining a through hole, a plurality of angularly spaced-apart recessed parts provided in the inner peripheral wall, and a plurality of compressible retaining units respectively disposed in the recessed parts and adapted to abut the inner tube section.
  • Each of the retaining units is connected to one of the recessed parts, and has an engaging part projecting toward the through hole, and a deformable space defined between the engaging part and a respective one of the recessed parts.
  • the deformable space is deformed when the inner tube section is friction-fitted into the sleeve body and when the engaging part of each retaining unit abuts the inner tube section.
  • the first preferred embodiment of a positioning sleeve 10 according to the present invention is adapted to be applied on a telescopic rod 200.
  • the telescopic rod 200 has an axis (L) , and includes an outer tube section 210, and an inner tube section 220 connected telescopically to the outer tube section 210.
  • the positioning sleeve 10 comprises a sleeve body having a first surrounding portion 121 adapted to surround the outer tube section 210, and a second surrounding portion 122 adapted to surround the inner tube section 220.
  • the second surrounding portion 122 has an inner peripheral wall 1221 surrounding the axis (L) and defining a through hole 11, a plurality of angularly spaced-apart recessed parts 1222 formed in the inner peripheral wall 1221, and a plurality of compressible retaining units 13 respectively disposed in the recessed parts 1222 and adapted to abut the inner tube section 220.
  • the first surrounding portion 121 has an inner peripheral wall 1211 with a diameter larger than a diameter of the inner peripheral wall 1221 of the second surrounding portion 122.
  • the sleeve body further has a shoulder portion 123 formed between the inner peripheral walls 1211, 1221 of the first and second surrounding portions 121, 122.
  • each of the retaining units 13 has two ends 131 that are opposite to each other in an angular direction and that are connected to the respective recessed part 1222, an engaging part 132 connected between the ends 131, and a deformable space 14 defined between the engaging part 132 and a respective one of the recessed parts 1222.
  • the engaging part 132 is a convex surface protruding toward the through hole 11 between the two ends 131.
  • the outer tube section 210 is inserted into the first surrounding portion 121 of the positioning sleeve 10 with a bottom end thereof abutting against the shoulder portion 123 so as to obtain an axial positioning.
  • the inner tube section 220 is friction-fitted into the sleeve body with a top end thereof passing through the through hole 11 and into an inner portion of the outer tube section 210.
  • the engaging parts 132 of the retaining units 13 abut against and are pressed by the inner tube section 220 so as to deform the deformable spaces 14 in the retaining units 13.
  • the engaging parts 132 of the retaining units 13 compress radially and resiliently the inner tube section 220, and thereby produce a retarding effect.
  • the length of the telescopic rod 200 is shortened, sliding movement of the inner tube section 220 with respect to the outer tube section 210 is retarded.
  • the positioning sleeve 10 of the present invention not only can enhance the appearance of the interconnected outer and inner tube sections 210, 220, but also can provide frictional positioning of the inner tube section 220 through the presence of the retaining units 13. Even after frequent use, wear of the engaging parts 132 is limited, and if wear does occur, the deformable spaces 14 can automatically compensate for the wear. Further, high accuracy during formation of the retaining units 13 is not necessary so that the defect rate can be reduced. Additionally, the positioning sleeve 10 maintains spacing between the ends of the interconnected outer and inner tube sections 210, 220 when the inner tube section 220 is forced to retract into the outer tube section 210. Further, smooth sliding movement of the outer and inner tube sections 210, 220 relative to each other can be achieved.
  • each of the retaining units 13' has a fixed end 131' connected to the respective recessed part 1222, a movable free end 133' that is spaced apart from the corresponding recessed part 1222 so that a slit 134' is formed therebetween, and an engaging part 132' connected between the fixed end 131' and the movable free end 133' .
  • the advantages of the first preferred embodiment can be similarly achieved using the second preferred embodiment.
  • each of the retaining units 13" has two ends 131" that are opposite to each other in an axial direction and that are connected to the respective recessed part 1222 (see Figure 4 ), and an engaging part 132" being a convex surface between the ends 131".
  • the retaining units 13" are resilient, and thus can retard movement of the inner tube section 220 relative to the outer tube section 210.
  • each of the retaining units 130 has a fixed end 140 connected to the respective recessed part 1222 (see Figure 4 ), a movable free end 150 that is spaced apart from the corresponding recessed part 1222 so that a slit 160 is formed therebetween, and an engaging part 170 connected between the fixed end 140 and the movable free end 150.
  • the retaining units 130 are resilient. Hence, the advantages described in the aforementioned preferred embodiments can be similarly achieved using the fourth preferred embodiment.

Landscapes

  • Mutual Connection Of Rods And Tubes (AREA)
EP07250184A 2007-01-18 2007-01-18 Cylindre de positionnement pour une tige télescopique Not-in-force EP1949812B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07250184A EP1949812B1 (fr) 2007-01-18 2007-01-18 Cylindre de positionnement pour une tige télescopique
AT07250184T ATE515204T1 (de) 2007-01-18 2007-01-18 Positionierhülse für eine teleskopstange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07250184A EP1949812B1 (fr) 2007-01-18 2007-01-18 Cylindre de positionnement pour une tige télescopique

Publications (2)

Publication Number Publication Date
EP1949812A1 true EP1949812A1 (fr) 2008-07-30
EP1949812B1 EP1949812B1 (fr) 2011-07-06

Family

ID=37903971

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07250184A Not-in-force EP1949812B1 (fr) 2007-01-18 2007-01-18 Cylindre de positionnement pour une tige télescopique

Country Status (2)

Country Link
EP (1) EP1949812B1 (fr)
AT (1) ATE515204T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015154952A1 (fr) * 2014-04-11 2015-10-15 Lekisport Ag Bâton pliable équipé d'un manchon tubulaire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083041A (en) * 1957-01-10 1963-03-26 Electrolux Ab Locking device for telescopically fitted parts
EP0027241A1 (fr) * 1979-10-13 1981-04-22 Cullmann Handelsgeselllschaft Für Verbrauchsgüter M.B.H. Support télescopique réglable, notamment pour pied de caméra
EP0417011A1 (fr) * 1989-09-08 1991-03-13 Laurent Melin Système de téléréglage pour canne à pêche téléscopique à éléments coniques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3083041A (en) * 1957-01-10 1963-03-26 Electrolux Ab Locking device for telescopically fitted parts
EP0027241A1 (fr) * 1979-10-13 1981-04-22 Cullmann Handelsgeselllschaft Für Verbrauchsgüter M.B.H. Support télescopique réglable, notamment pour pied de caméra
EP0417011A1 (fr) * 1989-09-08 1991-03-13 Laurent Melin Système de téléréglage pour canne à pêche téléscopique à éléments coniques

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015154952A1 (fr) * 2014-04-11 2015-10-15 Lekisport Ag Bâton pliable équipé d'un manchon tubulaire
US9974366B2 (en) 2014-04-11 2018-05-22 Lekisport Ag Folding pole having a tubular sleeve

Also Published As

Publication number Publication date
EP1949812B1 (fr) 2011-07-06
ATE515204T1 (de) 2011-07-15

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