EP0186714B1 - Dispositif de mise à niveau rapide - Google Patents

Dispositif de mise à niveau rapide Download PDF

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Publication number
EP0186714B1
EP0186714B1 EP84201944A EP84201944A EP0186714B1 EP 0186714 B1 EP0186714 B1 EP 0186714B1 EP 84201944 A EP84201944 A EP 84201944A EP 84201944 A EP84201944 A EP 84201944A EP 0186714 B1 EP0186714 B1 EP 0186714B1
Authority
EP
European Patent Office
Prior art keywords
valve member
casing
bellows
chamber
opening
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
Application number
EP84201944A
Other languages
German (de)
English (en)
Other versions
EP0186714A1 (fr
Inventor
Cornelis Franciscus De La Haye
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 DE8484201944T priority Critical patent/DE3479389D1/de
Priority to AT84201944T priority patent/ATE45475T1/de
Priority to EP84201944A priority patent/EP0186714B1/fr
Publication of EP0186714A1 publication Critical patent/EP0186714A1/fr
Application granted granted Critical
Publication of EP0186714B1 publication Critical patent/EP0186714B1/fr
Expired 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
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B91/00—Feet for furniture in general
    • A47B91/16—Self-levelling legs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00—Tables with tops of variable height
    • A47B9/10—Tables with tops of variable height with vertically-acting fluid cylinder

Definitions

  • the present invention relates to an apparatus for leveling a surface, comprising at least three bellows means for supporting said surface, each of said bellows means containing a pressure medium; a casing having a casing wall provided with an opening therein; a chamber inside said casing and having a chamber wall provided with an opening; a valve member mounted in said chamber; a conduit connected between each said bellows means and said casing, at least two of said conduits being in communication with one another when said valve member is operated.
  • an apparatus is characterized in that the opening in the casing wall is closed by a diaphragm and that there are spring means urging said valve member to a closed position in which said valve member engages said chamber wall, closes said chamber wall opening and extends into said casing wall opening and at least two of said conduits being in communication when said valve member is urged against the bias of said spring means out of engagement with said chamber wall, said valve member being operable to disconnect said conduits from one another when in the closed position; and a reciprocable actuator for said valve member mounted on the outside of said casing adjacent said diaphragm and arranged to be pushed into engagement with said valve member via said diaphragm and to move said valve member against the bias of said spring means out of engagement with said chamber wall.
  • Such an apparatus forms an entirely closed system which is maintenance-free. The closed system ensures that no or hardly any wandering occurs during a prolonged period of time.
  • conduits can be arranged such that the position of the surface can be controlled in either one of the two main directions.
  • valve member is made of slightly compressible material the valve member will smoothly close off the openings.
  • valve member has a conical portion it closes said chamber wall opening.
  • valve member may have a cylindrical portion of smaller diameter extending from the base of the conical portion, said cylindrical portion having passage means for equalizing pressure around said valve member in said chamber.
  • the above described apparatus may be accommodated in a box-shaped supporting table, thereby obtaining an easy handled element for supporting e.g. scales or the like.
  • the bellows may be surrounded by a casing consisting of two telescopically coacting portions, one of which being fitted with a supporting member adapted for coaction with table attachment means.
  • these may be filled with distilled water to which an antifreeze agent has been added to prevent it also from being frozen.
  • the apparatus according to the invention is suitable in particular for supporting scales used by the ambulant commerce, requiring a frequent leveling of the scales.
  • the apparatus according to the invention is also suitable for setting up a surface at a slight angle relative to the horizontal, as sometimes required e.g. with a slide projector or the like.
  • an apparatus for supporting objects comprises four bellows, each having a stub 22.
  • the bellows 2 are each connected through conduits 8 to a central operating block 7, fitted with a control knob 20.
  • Fig. 2 Another possibility is shown in Fig. 2, wherein the apparatus described is accommodated in a box-shaped table top 6. Since a major portion of the means employed therefor are identical to the above described means, and, consequently, are shown with the same reference numerals, a description thereof will be omitted. For the rest, the following is observed regarding Fig. 2.
  • the bellows 9 comprises the concertina-like bellows portion 23 proper, which is closed at the top end by a wall 24 and at the bottom end by a wall 25.
  • the wall 24, together with a small part of the bellows portion 23, is fixedly received in an attachment disc 26 fitted with a recess 27 adapted for coaction with a corresponding recess in the plate-like table top 6.
  • the comparatively thick bottom wall 25 of the bellows 9 is fitted with a recess 28 adapted for coaction with a recess of a jacket 30.
  • This thick synthetic plastics bottom wall 25 operates in a vibration damping fashion. It can therefore also be designed as a separate rubber disc.
  • the attachment disc 26 is fitted with a depending jacket 29 adapted for coaction with the said jacket 30 attached to the bottom wall 25.
  • the jackets 29 and 30 are fitted for relative guidance with inwardly oriented edges 31, 32.
  • the bottom wall 25, as shown in the drawings, is further fitted with a stem 33 coacting with an inwardly extended portion 34 of the stub 22.
  • the said portion 34 is fitted at the top wall 24 with passages 35.
  • the bellows portion 23 proper and the bottom wall 25 together with the stem 33 are in a single piece. This is also the case with the top wall 24 with the stub 22 and the downwardly extension 34 thereof. These two portions may be interconnected e.g. by glueing and be kept firmly against one another by incorporation of the connecting portion in the attachment disc 26.
  • control knob is again released, so that the conduits 8 are closed.
  • Said adjustment may take place e.g. by means of one or more leveling instruments (leveling instruments are statutory in the Netherlands, e.g. with scales).
  • a cylindrical, central operating block 40 fitted with four passages 41, each communicating through a conduit 42 with a bellows 43.
  • Fig. 3a the two upper, and the two lower passages, respectively, are interconnected, while in Fig. 3b the two left-hand passages, and the two right-hand passages, respectively, are interconnected.
  • the operating block 7 shown in Fig. 4 essentially comprises a casing 50 in a chamber 51 of which there is received a valve 52 made of a slightly compressible material, which valve 52 is maintained in abutment with a conical seat 55, with interposition of a spring 53 finding support against a cover 54.
  • a valve 52 made of a slightly compressible material
  • conical seat 55 In the conical seat 55 there terminate passages 56, 57 having stubs 58, 59 connecting via bends 60, 61 to hoses 62, 63, which are comparable to the above described conduits 3 and 4.
  • the front of the conical valve 52 extends into an opening 64 of the casing 50.
  • the opening 64 is shut off by a diaphragm 65 retained by a cover 66.
  • Said cover is fitted with a neck 67 through which there is provided an opening 68 for the passage of the stem 70 of a control knob 69.
  • the opening 68 at the side of the diaphragm, terminates in a chamber 71 for receiving the enlarged head 73 of the stem 70 fitted with saw cuts 72 for assembly purposes.
  • the operating block shown is further attached by means of a nut 74 by clamps to a wall 75 having an opening 76 of an apparatus, not further shown.
  • valve 52 in the chamber 51 is fitted with an equalizing passage 77.
  • the operating block shown in Fig. 4 is also contained in the apparatus shown in Fig. 2 even it is not depicted in said figure for the sake of simplicity.
  • the apparatuses described in the above have the advantage that they enable a rapid operation. Besides, they provide a good vibration damping, while a further advantage is that, due to the use of a closed system, this system is maintenance-free and is not troubled with wandering supports.

Landscapes

  • Diaphragms And Bellows (AREA)
  • Soil Working Implements (AREA)
  • Bridges Or Land Bridges (AREA)
  • Earth Drilling (AREA)
  • Machine Tool Units (AREA)

Claims (9)

1. Dispositif pour la mise de niveau d'une surface, comprenant: au minimum trois moyens de soufflets (9) pour supporter la dite surface, chacun des dits moyens de soufflets (9) contenant un agent de pression; un corps (40, 50) comportant une paroi de corps pourvue d'une ouverture pratiquée dans cette paroi; une chambre (51) prévue à l'intérieur du dit corps et comportant une paroi de chambre pourvue d'une ouverture (64); un élément de valve (52) monté dans la dite chambre; une conduite (42, 62, 63) reliée entre chacun des dits moyens de soufflets et le dit corps, deux au moins des dites conduites (42, 62, 63) étant en communication l'une avec l'autre lorsque le dit élément de valve est actionné, le dispositif étant caractérisé en ce que l'ouverture (64) dans la paroi de corps est obturée par un diaphragme (65) et qu'il est prévu un moyen de ressort (53) poussant le dit élément de valve (52) sur une position de fermeture dans laquelle le dit élément de valve (52) s'engage avec la dite paroi de chambre, obture la dite ouverture de paroi de chambre (64), et passe dans la dite ouverture de paroi de corps, deux au moins des dites conduites (42, 62, 63) étant en communication lorsque le dit élément de valve (52) est poussé en surmontant la résistance du dit moyen de ressort (53) hors d'engagement avec la dite paroi de chambre, le dit élément de valve (52) pourvant être actionné de façon à débrancher l'une de l'autre les dites conduites (42, 62, 63) lorsque cet élément se trouve dans la position de fermeture, et un actionneur à va-et-vient (44, 69) pour le dit élément de valve étant monté sur l'extérieur du dit corps adjacent au dit diaphragme et prévu pour être poussé en position d'engagement avec le dit élément de valve par l'intermédiaire du dit diaphragme, et pour déplacer le dit élément de valve, en surmontant la résistance du dit moyen de ressort, hors de position d'engagement avec la dite paroi de chambre.
2. Dispositif selon la revendication 1, caractérisé en ce que les dites conduites sont disposées de manière que la position de la surface puisse être contrôlée dans l'une ou l'autre des deux directions principales, (Fig. 3a et respectivement 3b).
3. Dispositif selon une quelconque des revendications 1 et 2, caractérisé en ce que le dit élément de valve est réalisé à partir de matériau légèrement compressible.
4. Dispositif selon la revendication 3, caractérisé en ce que le dit élément de valve (52) présente une partie conique qui obture la dite ouverture de paroi de chambre (55).
5. Dispositif selon la revendication 4, caractérisé en ce que le dit élément de valve (52) comprend une partie cylindrique de petit diamètre s'étendant à partir de la base de la partie conique, la dite partie cylindrique comportant un moyen de passage (77) pour égaliser la pression autour du dit élément de valve (52) dans la dite chambre (51).
6. Un dispositif selon une quelconque des revendications 1 à 5, installé dans une table support type caisson (6).
7. Un dispositif selon une quelconque des revendications 1 à 6, caractérisé en ce que le soufflet (23, 43) de chaque moyen de soufflet (9) est entouré par un corps consistant en deux parties collaborant télescopiquement (29, 30).
8. Un dispositif selon la revendication 7, caractérisé en ce qu'une partie (29) des deux parties de corps télescopiques est pourvue d'un élément support (26) prévu pour agir en collaboration avec le moyen de fixation de table (27).
9. Un dispositif selon une quelconque des revendications 1 à 4, caractérisé en ce que les soufflets sont remplis d'eau distillée à laquelle a été ajouté un agent anti-gel.
EP84201944A 1984-12-27 1984-12-27 Dispositif de mise à niveau rapide Expired EP0186714B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8484201944T DE3479389D1 (en) 1984-12-27 1984-12-27 A quick-leveling apparatus
AT84201944T ATE45475T1 (de) 1984-12-27 1984-12-27 Schnellnivelliervorrichtung.
EP84201944A EP0186714B1 (fr) 1984-12-27 1984-12-27 Dispositif de mise à niveau rapide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84201944A EP0186714B1 (fr) 1984-12-27 1984-12-27 Dispositif de mise à niveau rapide

Publications (2)

Publication Number Publication Date
EP0186714A1 EP0186714A1 (fr) 1986-07-09
EP0186714B1 true EP0186714B1 (fr) 1989-08-16

Family

ID=8192508

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84201944A Expired EP0186714B1 (fr) 1984-12-27 1984-12-27 Dispositif de mise à niveau rapide

Country Status (3)

Country Link
EP (1) EP0186714B1 (fr)
AT (1) ATE45475T1 (fr)
DE (1) DE3479389D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4321647A1 (de) * 1993-06-30 1995-01-12 Suspa Compart Ag Umschalt-Ventil
EP1927572A1 (fr) * 2006-11-30 2008-06-04 Gotthold Mönch Appareil de levage pour meubles
EP2139364A2 (fr) * 2007-04-23 2010-01-06 Frank Sorohan Dispositif de stabilisation
MX2017009908A (es) * 2015-12-17 2018-06-20 Flat Pty Ltd Soporte hidraulico.
CN108626529B (zh) * 2017-03-22 2021-04-23 青岛胶南海尔洗衣机有限公司 一种家用电器用底脚及家用电器
CN108626532B (zh) * 2017-03-23 2021-03-30 青岛胶南海尔洗衣机有限公司 一种家用电器用底脚及家用电器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288432A (en) * 1965-10-22 1966-11-29 Nat Tank Co Valve
US3678960A (en) * 1970-06-08 1972-07-25 Saul Leibinsohn Stop cock
US3768766A (en) * 1970-10-21 1973-10-30 A Bain Table levelling device

Also Published As

Publication number Publication date
DE3479389D1 (en) 1989-09-21
EP0186714A1 (fr) 1986-07-09
ATE45475T1 (de) 1989-09-15

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