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WO1996041958A1 - Dispositif de blocage d'un objet allonge - Google Patents

Dispositif de blocage d'un objet allonge Download PDF

Info

Publication number
WO1996041958A1
WO1996041958A1 PCT/DK1996/000232 DK9600232W WO9641958A1 WO 1996041958 A1 WO1996041958 A1 WO 1996041958A1 DK 9600232 W DK9600232 W DK 9600232W WO 9641958 A1 WO9641958 A1 WO 9641958A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
end portion
channel
clamping element
fixing device
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.)
Ceased
Application number
PCT/DK1996/000232
Other languages
English (en)
Inventor
Niels-Finn Valentinus
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP96918614A priority Critical patent/EP0832362A1/fr
Priority to AU61213/96A priority patent/AU6121396A/en
Publication of WO1996041958A1 publication Critical patent/WO1996041958A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
    • B43K23/016—Holders for crayons or chalks

Definitions

  • Fixing devices of this type are known e.g. from US Patent No. 2 657 671, US Patent No. 3 871 780 and GB Patent No. 2 078 508.
  • the two last-mentioned fixing de ⁇ vices use ring-shaped clamping elements which clamp a protruding elongate object carefully centered inside a channel, a cylindrical housing or a pipe, which may form part of either a table leg or a walking stick, against movements in the longitudinal direction of the object, said clamping element clamping around the entire periph ⁇ ery of the object and being capable of sliding or rolling by itself along an internal conical face in the cylindri- cal housing.
  • the object of the invention is to remedy the drawback de- scribed above. This is achieved according to the inven ⁇ tion by means of a fixing device of the type which is de ⁇ fined in the opening paragraph and is characterized in that the at least one clamping element is adapted to ex ⁇ tend forwardly from an associated opening in the wall and into the interior of the channel in engagement with the elongate object, and that the at least one clamping ele ⁇ ment can affect a portion of the surface of the elongate object received in the channel by a minimum clamping force and an increasing clamping force depending on a re- spective movement of the object in the longitudinal di ⁇ rection of it, thereby clamping the elongate object by a variable clamping force between the wall of the housing and the at least one clamping element.
  • the fixing device of the invention may be used to par ⁇ ticular advantage as a writing utensil to fix a piece of writing chalk e.g. at schools. Particularly writing chalk is produced in practice with certain tolerances, which makes the invention particularly expedient for this type of objects.
  • the invention may also be used to advantage for other objects which are affected by lateral forces in a position in which they have been moved partly out of the surrounding housing. What is contemplated here is e.g. lamp rods where the housing may form part of a wall mount.
  • the device may be used for fixing e.g. parasols, floor lamps with variable height adjustment, music stands, microphone stands or easels, or more gener ⁇ ally in connection with all forms of telescopingrod- shaped elements and e.g. in connection with the feeding of rod-shaped r objects to be cut in automatic workshop ma ⁇ chines .
  • the user of the fixing device can release the clamping element, which is ring-shaped, from the outside of the housing in a particularly simple and easy manner and can thereby move the elongate object freely in both directions.
  • the clamping element which is ring-shaped
  • the actual clamping is intensified in this embodiment in that the ring-shaped clamping element moves or rolls to ⁇ ward the channel in the inclined slot, when the object is moved in a first direction in accordance with the orien- tation of the slot so that the object is clamped by wedge-effect.
  • the ring part extending along the ex ⁇ terior of the housing is merely gripped by the hands, and the ring may then readily be moved upwards along the in- clined slot away from the mouth in the channel, thereby releasing the clamping completely or partly.
  • the clamping element will affect the object by a minimum clamping force, ensuring that the object cannot drop out by itself.
  • at least one annular de ⁇ pression may be provided along at least a portion of the exterior of the housing, as the at least one ring-shaped clamping element may extend in an associated annular de ⁇ pression along the exterior of the housing and serves to guide the ring.
  • the at least one ring-shaped clamping element may be adapted to protrude from the associated annular depression, which makes it easier to grip the ring by the hands.
  • the said slot may advan ⁇ tageously extend obliquely from the exterior of the hous ⁇ ing a direction from the first end portion, and two of the said inclined slots with associated ring-shaped clamping elements may be provided in a special embodi- ment, where a first slot extends obliquely from the exte ⁇ rior of the housing in a direction from the first end portion, and a second slot extends obliquely from the ex ⁇ terior of the housing in a direction toward the first end portion. Unintentional movement of the object in both di- rections can hereby be prevented.
  • At least one clamping element may be arranged in the vicinity of the first end portion, via which the object must be capable of being pulled out or inserted, thereby providing a par ⁇ ticularly safe fixing of the object in the vicinity of the end where the object may be subjected to lateral forces.
  • the housing and/or the channel may have a circular or polygonal cross-section, according to the cross-sectional shape of the object.
  • the channel may also be formed with a mouth at the second end portion, and this mouth may be used for inserting the object into the housing, without the clamping element having to be re- moved or released completely.
  • the object when being inserted, will press the clamping element along the slot in a direction toward the exterior of the housing, whereby the elastic clamping element will yield to allow the object to pass.
  • the channel wall opposite the at least one clamping element may be formed with at least two longitudinal support lines, which ensures an even more reliable support of the ob ⁇ ject, particularly if the object has an uneven surface.
  • fig. 2 is a view similar to fig. 1, but with the elongate object removed,
  • fig. 3 is an end view of the device in an alternative em- bodiment of the channel without an inserted object and with two longitudinal support lines, and
  • a fixing device 1 of the invention comprises an elongate housing 2, which is shown to have a circular cross-section, but which may also have a polygonal cross-section.
  • the housing 2 has a wall 5 defining an internal channel 25 which has a mouth at a first end portion 10 of the housing 2 and a mouth at a second end portion 20.
  • the channel 25 has an essen- tially constant cross-section - at least between the clamping element and the first end portion 10, but pref ⁇ erably in the entire longitudinal direction.
  • an inclined slot 40 which terminates at the exterior of the housing and in the channel 25, respectively, is formed in the wall 5 in the vicinity of the first end portion 10.
  • the slot 40 extends obliquely from the exterior of the housing 2 in a direction from the first end portion 10 and toward the second end portion 20.
  • the inclined slot 40 extends in the wall 5 along the circumference of the housing 2.
  • the extent of the slot 40 is of such a size as to provide clamping of an elongate object 30, which is shown to have a circular cross-sec ⁇ tion, such as a lamp rod or a piece of writing chalk, in- serted into the channel with an end protruding from the housing 2 at the first end portion 10, as will be ex ⁇ plained more fully below.
  • the ring-shaped clamping element 35 which engages the object 30 and a portion of the wall 5 of the housing 2 in the slot 40, will move along the inclined slot 40 toward the second end portion 20, when it is attempted to move the object 30 toward this end portion 20 by a corre ⁇ spondingly directed force on the protruding end face of the object 30, e.g. when the object is a piece of writing chalk which is used on a blackboard.
  • This movement which results from the movement of the clamping element 35 by the object 30, presses the clamping element 35 further down into the slot 40 and thus acts as wedge which af- fects the object 30 by an increasing clamping force, thereby effectively preventing further insertion of the object.
  • the interior of the housing 1, oppo- site the at least one clamping element may comprise at least two longitudinal support lines 50 formed by provid ⁇ ing a longitudinal recess in the wall 5. These support lines 50 particularly serve to ensure that the object - if it has an uneven surface - is still kept supported by the channel at the first end portion as well as at the clamping element.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)

Abstract

L'invention porte sur un dispositif de blocage dans le sens de sa longueur d'un objet allongé comportant: un logement allongé (2) présentant une première extrémité (10) et une deuxième extrémité (20); un canal interne allongé (25) destiné à recevoir l'objet allongé (30) délimité par la paroi (5) du logement (2) et s'étendant entre la première extrémité (10) et la deuxième extrémité (20) et présentant une ouverture à sa première extrémité (10); et au moins un élément (35) de blocage. Le dispositif est caractérisé en ce que l'élément (35) de blocage est conçu pour s'étendre vers l'avant à partir d'une ouverture associée pratiquée dans la paroi (5), et à l'intérieur du canal (25), de façon à entrer en contact avec l'objet allongé (30), et en ce que l'élément de blocage (35) peut prendre sur une partie de la surface de l'objet allongé (30) engagé dans le canal (25) avec une force de blocage minime, la force de blocage croissant en fonction du mouvement relatif de l'objet (30) dans la direction longitudinale, ce qui bloque l'objet allongé (30) avec une force de blocage variable s'exerçant entre la paroi (5) du logement (2) et l'élément de blocage (35).
PCT/DK1996/000232 1995-06-13 1996-05-31 Dispositif de blocage d'un objet allonge Ceased WO1996041958A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96918614A EP0832362A1 (fr) 1995-06-13 1996-05-31 Dispositif de blocage d'un objet allonge
AU61213/96A AU6121396A (en) 1995-06-13 1996-05-31 A retention device for elongate objects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK67195A DK171773B1 (da) 1995-06-13 1995-06-13 Holder til fastholdelse af en stang i indadgående retning
DK0671/95 1995-06-13

Publications (1)

Publication Number Publication Date
WO1996041958A1 true WO1996041958A1 (fr) 1996-12-27

Family

ID=8096208

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1996/000232 Ceased WO1996041958A1 (fr) 1995-06-13 1996-05-31 Dispositif de blocage d'un objet allonge

Country Status (4)

Country Link
EP (1) EP0832362A1 (fr)
AU (1) AU6121396A (fr)
DK (1) DK171773B1 (fr)
WO (1) WO1996041958A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1123635A (en) * 1912-11-18 1915-01-05 Robert S Conner Clamping device for tappets.
US1203071A (en) * 1914-12-11 1916-10-31 William F Straub Locking device.
US2657671A (en) * 1952-09-23 1953-11-03 Francis A Wade Controlled lead pencil
DE2004220A1 (de) * 1969-02-10 1970-09-03 Louis Maslow Regal
US3871780A (en) * 1972-11-03 1975-03-18 Skillingaryds Mekaniska Ab Device for locking two concentrically positioned and axially displaceable members
GB1602697A (en) * 1977-05-12 1981-11-11 Lamouric P Tool-holding devices
GB2078508A (en) * 1980-05-19 1982-01-13 Carters J & A Ltd Adjustable locking mechanism
WO1994011642A1 (fr) * 1992-11-10 1994-05-26 Sofamor, S.N.C. Dispositif d'accouplement reciproque d'un element allonge et d'un support destine a ce dernier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1123635A (en) * 1912-11-18 1915-01-05 Robert S Conner Clamping device for tappets.
US1203071A (en) * 1914-12-11 1916-10-31 William F Straub Locking device.
US2657671A (en) * 1952-09-23 1953-11-03 Francis A Wade Controlled lead pencil
DE2004220A1 (de) * 1969-02-10 1970-09-03 Louis Maslow Regal
US3871780A (en) * 1972-11-03 1975-03-18 Skillingaryds Mekaniska Ab Device for locking two concentrically positioned and axially displaceable members
GB1602697A (en) * 1977-05-12 1981-11-11 Lamouric P Tool-holding devices
GB2078508A (en) * 1980-05-19 1982-01-13 Carters J & A Ltd Adjustable locking mechanism
WO1994011642A1 (fr) * 1992-11-10 1994-05-26 Sofamor, S.N.C. Dispositif d'accouplement reciproque d'un element allonge et d'un support destine a ce dernier

Also Published As

Publication number Publication date
EP0832362A1 (fr) 1998-04-01
DK171773B1 (da) 1997-05-20
AU6121396A (en) 1997-01-09
DK67195A (da) 1996-12-14

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