EP0667462B1 - Colonne réglable pour sièges, tables ou similaires et agrafe de fixation - Google Patents

Colonne réglable pour sièges, tables ou similaires et agrafe de fixation Download PDF

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Publication number
EP0667462B1
EP0667462B1 EP94118816A EP94118816A EP0667462B1 EP 0667462 B1 EP0667462 B1 EP 0667462B1 EP 94118816 A EP94118816 A EP 94118816A EP 94118816 A EP94118816 A EP 94118816A EP 0667462 B1 EP0667462 B1 EP 0667462B1
Authority
EP
European Patent Office
Prior art keywords
base plate
spring
piston rod
opening
securing
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.)
Expired - Lifetime
Application number
EP94118816A
Other languages
German (de)
English (en)
Other versions
EP0667462A1 (fr
Inventor
Otmar Hein
Walter Böhm
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.)
Suspa Compart AG
Original Assignee
Suspa Compart AG
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 DE9402272U external-priority patent/DE9402272U1/de
Application filed by Suspa Compart AG filed Critical Suspa Compart AG
Publication of EP0667462A1 publication Critical patent/EP0667462A1/fr
Application granted granted Critical
Publication of EP0667462B1 publication Critical patent/EP0667462B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder

Definitions

  • the invention relates to a length-adjustable column according to the preamble of claim 1 and a spring securing clip for such a column according to the preamble of claim 9.
  • the spring securing clip is installed by axially placing the base plate in the area of the larger opening and by moving it transversely to the axis when the groove in the piston rod, which is regularly an annular groove, is reached.
  • the spring clip can be lifted out of the position surrounding the free end of the piston rod again, for example by means of a screwdriver, and the securing clip can be moved transversely to the piston rod until the larger opening receives the piston rod, whereupon an axial pulling off of the securing clip from the piston rod is then possible , the section of the spring clip which is located above the larger opening and which holds the piston rod in its position in the smaller opening is bent up from the base plate in such a way that a screwdriver can be pushed between the base plate and the spring clip.
  • FR-A-2 540 198 shows a spring securing clip which has a base plate and a spring clip bent from it and bent over to it, the base plate having a larger opening which can be pushed over the free end of the piston rod and a smaller, an annular groove in has a bolt or a shaft adapted opening, wherein the smaller and the larger opening penetrate each other like a keyhole.
  • the base plate is angled upwards in the area of the larger hole, so that the bolt or the shaft can be inserted radially. In use, the bolt or shaft penetrates the smaller opening, the spring clip, which has an inner cutout, receives the bolt or shaft and partially surrounds it in the direction of the larger opening.
  • the spring clip runs largely without a gap in relation to the base plate.
  • a spring securing clip is suitable for fixing a piston rod to a base plate in a length-adjustable column for chairs, tables or the like, as is known, for example, from EP-A-0 366 889 or EP-A-0 420 219 .
  • the invention is based on the object of designing a length-adjustable column of the generic type and a spring securing clip of the generic type in such a way that inadvertent loosening of the securing clip is ruled out while maintaining a fully automatic mounting option.
  • the spring clip is designed so that it holds the free end of the piston rod in the smaller opening, that is to say in the firmly locked position between the securing clip and the end of the piston rod. Furthermore, the section of the spring clip that surrounds the end of the piston rod runs flat and approximately without a gap into the facing upper side of the base plate of the securing clip. On the other hand, however, a suitable tool, for example a screwdriver, can be inserted into the area of the larger opening not covered by the spring clip and pushed under the spring clip so that it can be lifted off the base plate to release the securing clip. Claims 2 and 10 define this area for inserting a suitable tool more precisely.
  • the chair column shown in the drawing shows a standpipe 1 in which a length-adjustable gas spring 2 is arranged as a pneumatic or hydropneumatic piston-cylinder adjusting element.
  • the standpipe 1 and the gas spring 2 have a common central longitudinal axis 3.
  • An outer housing 4 of the gas spring 2 is displaceably supported in the direction of the axis 3 in a guide bush 5, which is arranged at one end 6 of the standpipe 1, which is upper in the drawing.
  • This outer housing 4 of the gas spring 2 can be its housing itself or a protective tube surrounding it on the outside.
  • a piston rod 7 protrudes from the housing 4 of the gas spring 2 and is supported in the direction of the axis 3 via an axial roller bearing 8 in relation to a base plate 9 of the standpipe 1.
  • the base plate 9 is located at one end 6 opposite the other - in the drawing shown below - end 10 of the standpipe 1.
  • a pin 11 of the piston rod 7 passing through the axial roller bearing 8 extends through an opening 12 of the base plate 9 which is concentric with the axis 3. It is against the underside of the base plate 9 by means of a washer 13 and a Spring securing clip 14 secured against pulling out.
  • the diameter of the opening 12 is larger than the diameter of the pin 11.
  • the standpipe 1 has, adjacent to the end 10, a conical section 17 tapering slightly towards it, by means of which the standpipe 1 is fastened in a corresponding cone bushing of a chair base or the like. is possible.
  • the ring-shaped base plate 9 is supported on a cup-shaped rim 18 of the standpipe 1 which is rolled inwards in the region of its end 10.
  • This inwardly rolled edge is approximately semicircular in cross-section, i.e. it has approximately the cross-section of a semi-circular ring.
  • protrusions 20 projecting from the inner wall 19 of the standpipe 1 are formed directly above the base plate 9 and can be produced by being pressed in from the outside. For example, six such projections 20 can be distributed evenly over the circumference. This measure serves to prevent the gas spring 2 with the base plate 9 being pulled out of the standpipe 1 upwards, for example when the chair is lifted on its seat part.
  • This Protrusions 20 do not have any major forces, but only the weight of the standpipe 1 with a base attached to it.
  • serving column So far the primarily as a chair column, but also as a column for tables or the like. serving column has been described up to here, it is generally known, commercially available and described and shown, for example, in EP-B-0 366 889 (corresponding to US-A-4,969,619).
  • the spring securing clip 14 is shown in more detail in the drawing figures 2 to 4. It is formed in one piece overall and has a flat base plate 21 which is intended to bear against the washer 13 or directly against the underside of the base plate 9. In this base plate 21, two mutually penetrating, generally circular openings 22, 23 are formed, which overall have a keyhole-like shape due to their penetration.
  • the larger opening 22 has a diameter D which is slightly larger than the diameter D 'of the pin 11 of the piston rod 7.
  • the smaller opening 23 has a diameter d which is smaller than the diameter D' of the pin 11 but somewhat larger than that Inner diameter d 'of an annular groove 24 for receiving the base plate 21 in the pin 11 of the piston rod 7.
  • the transition 25 from the smaller opening 23 into the larger opening 22 is of course such that no constriction occurs here, as can be seen from FIG. 4.
  • An outer, approximately U-shaped spring clip 26 and an inner spring clip 27 are bent from the base plate 21 via an arc section 28 to the base plate 21.
  • the end of the spring clip 26 ends on the base plate 21, as can be seen in FIG. 3.
  • the outer curved section 30 of the spring clip 26 extends over the central region of the larger opening 22, but leaves in its outermost region a crescent-shaped region 31 of the larger opening 22.
  • the middle spring tab 27 at least largely covers the area of the smaller opening 23 of the base plate 21.
  • the spring securing clip 14 is assembled as follows:
  • the gas spring 2 has been pushed into the standpipe 1 with the axial roller bearing 8 plugged onto the pin 11 and the free end of the pin 11 has been pushed through the opening 12 of the base plate 9.
  • the washer 13 has been placed.
  • the securing clip 14 is placed with its base plate 21 on the pin 11.
  • the annular groove 24 has an extension a in the direction of the central longitudinal axis 3, which is somewhat greater than the thickness b of the base plate 21.
  • the securing clip 14 can be displaced transversely to the axis 3 are so that the inner edge of the base plate 21 reaches the annular groove 24 in the region of the opening 23.
  • the pin 11 is in the larger opening 22
  • its free end rests against the curved section 30 of the spring clip 26 and against the spring clip 27 and in particular deflects the spring clip 26 from its position against the base plate 21 shown in FIG. 3 .
  • a pointed or narrow flat object such as a screwdriver
  • a pointed or narrow flat object such as a screwdriver
  • the securing clip 14 can be moved transversely to the axis 3 with the same movement so that the pin 11 enters the larger opening 22 of the base plate 21, from where the securing clip 14 then from Pin 11 can be removed. Since this crescent-shaped area 31 is used to disassemble the securing clip 14, the curved section 30 of the spring clip 26 can run flush against the base plate 21 largely without a gap, as can be seen in particular in FIG. 3.
  • the threads or fibers of high-flour carpets, which could otherwise loosen the securing clip 14, cannot pass under this area 31.
  • the spring securing clip 14 ' differs from the spring securing clip 14 described so far only in that lateral spring tongues 33 are formed on the base plate 21 in the vicinity of the arc section 28, which are approximately parallel to the legs 34 of the U-shaped spring clip 26 extend and end approximately at the beginning of its curved portion 30.
  • the spring tongues 33 are - as can be seen in FIG. 7 - bent with respect to the essentially flat base plate 21, specifically to the side facing away from the spring clip 26. Its free end 35 ends approximately in the plane of the base plate 21, as can be seen in FIG. 7.
  • the most distant curved area 36 from the base plate 21 is located approximately transversely to the center of the small opening 23.
  • the spring securing clip 14 ' is used to secure a gas spring 2 in a standpipe 1, as described above with reference to FIGS. 1 and 5, then the spring tongues 33 lie on both sides of the pin 11 of the piston rod 7 with the curved regions 36 corresponding pressure against the washer 13 and press it in turn against the base plate 9 of the standpipe 1. If such a washer 13 is not present, then they lie directly against the base plate 9. As a result, the piston rod 7 and thus the gas spring 2 itself is determined in the standpipe 1 without play with respect to the central longitudinal axis 3. This eliminates a noticeable axial play between gas spring 2 and standpipe 1, which could be perceived as uncomfortable when lifting a chair or armchair.
  • each spring tongue 33 ends in the region of the base plate 21, the spring securing clip 14 'can be easily inserted into the annular groove 24 on the pin 11 of the piston rod 7 and against the washer 13 or the base plate 9.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Clamps And Clips (AREA)
  • Tables And Desks Characterized By Structural Shape (AREA)

Claims (16)

  1. Colonne de longueur réglable pour chaises, tables ou analogues, comportant un tube vertical (1) et un élément pneumatique ou hydropneumatique de réglage de longueur, qui est disposé dans le tube vertical concentriquement à un axe médian longitudinal commun (3) et dont le boîtier (4) prend appui radialement dans le tube vertical (1) et est guidé de manière à être déplaçable dans la direction de l'axe (3) et dont la tige de piston (7) est fixée, au niveau de son extrémité libre, à une plaque de base (9) du tube vertical (1) dans la direction de l'axe (3) à l'aide d'une pince de fixation à ressort (14,14'), qui possède une plaque de base (21) et un étrier formant ressort (26) replié à partir de la plaque et rabattu vers cette dernière, et dans laquelle la plaque de base (21) possède une ouverture plus grande (22), pouvant être amenée au-dessus de l'extrémité libre de la tige de piston (7), et une ouverture plus petite (23) adaptée à une rainure (24) aménagée dans la tige de piston (7), l'ouverture la plus petite et l'ouverture la plus grande (22,23) se raccordent à la manière d'un trou de serrure, la tige de piston (7) traverse l'ouverture la plus petite (23), et l'étrier formant ressort (26) recouvre partiellement l'ouverture la plus grande (22) et reçoit dans un évidement intérieur (29) la tige de piston (7) située dans l'ouverture la plus petite (23) et entoure partiellement cette tige en direction de l'ouverture plus étendue (22), caractérisée en ce que l'étrier formant ressort (26) recouvre seulement partiellement la grande ouverture (22) sur le côté tourné à l'opposé de la plus petite ouverture (23) et laissant à découvert une partie (31) suffisamment étendue pour l'engagement d'un outil, et que dans cette partie (31), l'étrier formant ressort (26) se termine dans une large mesure sans former aucune fente par rapport à la plaque de base (21).
  2. Colonne de longueur réglable selon la revendication 1, caractérisée en ce que la partie (31) est agencée en forme de croissant.
  3. Colonne de longueur réglable selon la revendication 1 ou 2, caractérisée en ce que la pince de fixation à ressort (14,14') comporte une patte élastique (27) qui est repliée à partir de la plaque de base (21) et est rabattue vers cette dernière et qui remplit en partie l'évidement (29) de l'étrier formant ressort (26) et s'applique, au niveau de son extrémité libre, contre une face frontale (32) de la tige de piston (7).
  4. Colonne de longueur réglable selon l'une des revendications 1 à 3, caractérisée en ce que l'étrier formant ressort (26) se termine, dans la partie (31), à plat devant la plaque de base (21).
  5. Colonne de longueur réglable selon l'une des revendications 1 à 4, caractérisée en ce que la pince de fixation à ressort (14') comporte au moins une languette formant ressort (33), qui est précintrée au-dessus de la plaque de base (22) sur le côté tourné à l'opposé de l'étrier formant ressort (26).
  6. Colonne de longueur réglable selon la revendication 5, caractérisée en ce qu'au moins une languette formant ressort (33) possède une partie cintrée (36) distante de la plaque de base (21) et une extrémité libre (35) voisine du plan de la plaque de base (21).
  7. Colonne de longueur réglable selon la revendication 6, caractérisée en ce que la partie cintrée (36) est située à côté de l'ouverture la plus petite (23).
  8. Colonne de longueur réglable selon l'une des revendications 5 à 7, caractérisée en ce que deux languettes formant ressort (33) sont disposées des deux côtés de la plaque de base (22) symétriquement par rapport à cette dernière.
  9. Pince de fixation à ressort pour une colonne de longueur réglable pour chaises, tables ou analogues, comportant un tube vertical (1) et un élément pneumatique ou hydropneumatique de réglage de longueur, qui est disposé dans le tube vertical concentriquement à un axe médian longitudinal commun (3) et dont le boîtier (4) prend appui radialement dans le tube vertical (1) et est guidé de manière à être déplaçable dans la direction de l'axe (3) et dont la tige de piston (7) est fixée, au niveau de son extrémité libre, à une plaque de base (9) du tube vertical (1) dans la direction de l'axe (3) à l'aide d'une pince de fixation à ressort (14,14'), qui possède une plaque de base (21) et un étrier formant ressort (26) replié à partir de la plaque et rabattu vers cette dernière, dans laquelle la plaque de base (21) possède une ouverture plus grande (22), pouvant être amenée au-dessus de l'extrémité libre de la tige de piston (7), et une ouverture plus petite (23) adaptée à une rainure (24) aménagée dans la tige de piston (7), l'ouverture la plus petite et l'ouverture la plus grande (22,23) se raccorde à la manière d'un trou de serrure, la tige de piston (7) traverse l'ouverture la plus petite (23), lors de l'utilisation, et l'étrier formant ressort (26) recouvre partiellement l'ouverture la plus grande (22) et, lors de l'utilisation, reçoit dans un évidement intérieur (29) la tige de piston (7) située dans l'ouverture la plus petite (23) et entoure partiellement cette tige en direction de l'ouverture plus étendue (22), caractérisée en ce que l'étrier formant ressort (26) recouvre seulement partiellement la grande ouverture (22) sur le côté situé à l'opposé de l'ouverture la plus petite (23) et laisse à découvert une partie (31) suffisamment étendue pour l'engagement d'un outil, et que l'étrier formant ressort (26) se termine, au niveau de cette partie (31), dans une large mesure sans former aucune fente par rapport à la plaque de base (21).
  10. Pince de fixation à ressort selon la revendication 9, caractérisée en ce que la partie (31) est agencée en forme de croissant.
  11. Pince de fixation à ressort selon la revendication 9 ou 10, caractérisée en ce qu'elle possède une patte formant ressort (27) qui est repliée à partir de la plaque de base (21) et est rabattue vers cette dernière et qui remplit partiellement l'évidement (29) de l'étrier formant ressort (26) et recouvre au moins partiellement, au niveau de son extrémité libre, l'ouverture la plus petite (23).
  12. Pince de fixation à ressort selon l'une des revendications 9 à 11, caractérisée en ce que l'étrier formant ressort (26) se termine, au niveau de la partie (31), à plat devant la plaque de base (21).
  13. Pince de fixation à ressort selon l'une des revendications 9 à 12, caractérisée en ce que la pince de fixation à ressort (14') comporte au moins une languette formant ressort (33), qui est préalablement recourbée, sur son côté tourné à l'opposé de l'étrier formant ressort (26), au-dessus de la plaque de base (21).
  14. Pince de fixation à ressort selon la revendication 13, caractérisée en ce que la au moins une languette à ressort (33) possède une partie cintrée (36), qui est distante de la plaque de base (21), et une extrémité libre (35) voisine du plan de la plaque de base (21).
  15. Pince de fixation à ressort selon la revendication 14, caractérisée en ce que la partie cintrée (36) est située à côté de la plus petite ouverture (23).
  16. Pince de fixation à ressort selon l'une des revendications 13 à 15, caractérisée en ce que deux languettes formant ressorts (33) sont disposées des deux côtés de la plaque de base (21), symétriquement par rapport à cette dernière.
EP94118816A 1994-02-11 1994-11-30 Colonne réglable pour sièges, tables ou similaires et agrafe de fixation Expired - Lifetime EP0667462B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9402272U 1994-02-11
DE9402272U DE9402272U1 (de) 1994-02-11 1994-02-11 Längenverstellbare Säule für Stühle, Tische o.dgl. und Feder-Sicherungsklammer hierfür
DE9406621U DE9406621U1 (de) 1994-02-11 1994-04-20 Längenverstellbare Säule für Stühle, Tische o. dgl. und Feder-Sicherungsklammer hierfür
DE9406621U 1994-04-20

Publications (2)

Publication Number Publication Date
EP0667462A1 EP0667462A1 (fr) 1995-08-16
EP0667462B1 true EP0667462B1 (fr) 1997-06-11

Family

ID=25961735

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118816A Expired - Lifetime EP0667462B1 (fr) 1994-02-11 1994-11-30 Colonne réglable pour sièges, tables ou similaires et agrafe de fixation

Country Status (3)

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EP (1) EP0667462B1 (fr)
DE (2) DE9406621U1 (fr)
ES (1) ES2104256T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107575441A (zh) * 2017-09-26 2018-01-12 嘉兴汉工汽车紧固件有限公司 插销类防脱用卡簧、加工工艺及其卡簧组件

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118612B (en) * 1982-04-21 1985-06-26 United Carr Ltd Trw Anti-rattle clip
DE3302752C2 (de) * 1983-01-27 1986-09-25 Daimler-Benz Ag, 7000 Stuttgart Axialschub-Sicherungsklemme für einen ein Bauteil durchsetzenden Bolzen
DE3932146A1 (de) * 1989-09-27 1991-04-04 Stabilus Gmbh Axiallager fuer die saeule einer hydropneumatischen sitzmoebel-hoehenverstellung

Also Published As

Publication number Publication date
DE9406621U1 (de) 1994-06-30
DE59403111D1 (de) 1997-07-17
ES2104256T3 (es) 1997-10-01
EP0667462A1 (fr) 1995-08-16

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