EP0106388B1 - Dispositif de blocage d'une table à dessin - Google Patents

Dispositif de blocage d'une table à dessin Download PDF

Info

Publication number
EP0106388B1
EP0106388B1 EP83201326A EP83201326A EP0106388B1 EP 0106388 B1 EP0106388 B1 EP 0106388B1 EP 83201326 A EP83201326 A EP 83201326A EP 83201326 A EP83201326 A EP 83201326A EP 0106388 B1 EP0106388 B1 EP 0106388B1
Authority
EP
European Patent Office
Prior art keywords
frame
jaws
brake
clamping
column
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
EP83201326A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0106388A1 (fr
Inventor
Alain Bruneau
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.)
Alpia SA
Original Assignee
Alpia SA
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 Alpia SA filed Critical Alpia SA
Publication of EP0106388A1 publication Critical patent/EP0106388A1/fr
Application granted granted Critical
Publication of EP0106388B1 publication Critical patent/EP0106388B1/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
    • A47B27/00—Drawing desks or tables; Carriers for drawing-boards
    • A47B27/14—Adjustable underframes

Definitions

  • Locking device for a drawing table mainly composed of a fixed work surface on a mobile column sliding vertically in a frame resting on the ground by a base, the weight of the mobile assembly being compensated by a balancing device disposed between the frame and the work surface, the movable column being cylindrical, a brake, integral with the frame, controlled by a pedal external to the frame, enclosing the cylindrical column in order to immobilize it in height and in rotation inside the built.
  • Known locking devices are, in general, composed by self-tightening systems with cam or rods used on rectangular mobile columns.
  • Document DE-B-1 220 570 describes a device for blocking a drawing table comprising a brake secured to the frame and consisting of a metal strip 5 enclosing the cylindrical column 2 supporting the work surface.
  • the strip 5 is fixed by one of its ends to a stud 6 of a ring 4 resting on an internal rib of the frame 1, the other end of the strip 4 being connected to the resistant arm of a lever 7, at - above a support point 8.
  • this brake is obtained by applying the active force of the lever 7 by means of a rod 9 so that it pivots around the fulcrum 8.
  • the problem which the invention proposes to solve is, in a device for blocking a drawing table in accordance with the preamble of claim 1, that posed by the alignment and the adjustment of the brake application on the movable column.
  • the brake according to the invention consists of two jaws integral with the frame, one of the jaws is connected to a fixed point on the frame by a bolt, adjustable in position in an orifice oblong perpendicular to the clamping direction of the jaws, ensuring the alignment of the brake on the column, the other jaw is made integral with the first jaw by a yoke, adjustable parallel to the clamping direction of the jaws, which allows to bring closer or move the two jaws away, and thus adjust the brake application on the movable column, the two adjustment devices being arranged on the side opposite to that on which the clamping mechanism acts.
  • each of the connecting rods is connected to a single plate by a pivot, the other end of each connecting rod being connected to the end of a brake shoe.
  • This single plate is suspended from the frame by the springs which are hung on one side on the pins of the frame and on the other side on the plate by holes, springs thus exerting a traction force on said plate so that either permanently secured the brake on the mobile column.
  • the movable plate is connected to the external pedal to the frame by at least one rod, located inside the frame, which controls the movements of said plate allowing, by the action of the connecting rods on the brake shoes, the momentary release of these and the change of position of the work plan.
  • FIG. 1 represents an overall view of a drawing table mainly composed of a frame 1, provided with a base 2, in which slides a column 3 supporting a work surface 4 by means of a fitting Orientation 5.
  • a weight balancing device is shown in dotted lines, for the record.
  • the arrows a, b, c indicate the three orientations that can be given to work plan 4.
  • FIGS. 2 and 3 represent the device which consists of a brake 7 composed of two semi-circular jaws 70, 71, optionally provided with fittings, adapted to the external shape of the column 3.
  • the jaws 70, 71 bear on the frame 1, on one side by a hinge 701 on a fixed point 100 of said frame arranged so that it allows, while supporting them, the spacing of the brake shoes 7.
  • the jaw 70 carries on one of its ends 700 the articulation 701 constituted by an oblong orifice 702 through which a bolt 703 passes which keeps it on the fixed point 100.
  • the jaw 71 carries at the corresponding end 710 an adjustable yoke 711 allowing bring the two jaws closer together or farther apart and adjust the tightening on the column 3. Perfect alignment of the brake 7 on the column 3 is ensured by the positioning of the bolt 703 in the oblong opening 702 of the fixed point 100.
  • the opposite ends 704 and 712 of the jaws 70 and 71 rest freely on the step 101 and slide on this support when they are spaced from each other by a pressure P exerted on the pedal 6.
  • FIG. 4 shows the brake control means 7 constituted by a plate 8 suspended by two springs 9 hooked on one side to pins 102 of the frame, on the other on plate 8 by holes 80 thereby exerting a tensile force F on said plate.
  • Said plate 8 thus suspended, comprises connecting elements with the jaws 70, 71 constituted by two connecting rods 81, 82 mounted, each on two pivots, some 83, 84 placed perpendicularly to the plane of the plate 8, the others 705, 713 embedded in the ends 704,712 of the jaws 70, 71.
  • the plate 8 is pierced with two holes 85, 86 through which pass the curved ends 11 of two rods 10 connected to the pedal 6 and held in place by washers and / or pins.
  • FIG. 5 shows the whole of the locking device, in place inside the frame, with the exception of the fixed points 100 and 101 of the frame 1 on which it rests.
  • the plate 8 controls the opening of the shoes 70, 71 of the brake 7 by means of the connecting rods 81, 82.
  • a device for balancing the weights of the work surface and the drawing apparatuses as described in the document FR-A -2 448317 prevents any sudden descent of the latter when pressure P is applied to pedal 6.

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)
  • Braking Arrangements (AREA)
EP83201326A 1982-09-22 1983-09-15 Dispositif de blocage d'une table à dessin Expired EP0106388B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8216328A FR2533122B1 (fr) 1982-09-22 1982-09-22 Dispositif de blocage d'une table a dessin
FR8216328 1982-09-22

Publications (2)

Publication Number Publication Date
EP0106388A1 EP0106388A1 (fr) 1984-04-25
EP0106388B1 true EP0106388B1 (fr) 1985-12-04

Family

ID=9277818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83201326A Expired EP0106388B1 (fr) 1982-09-22 1983-09-15 Dispositif de blocage d'une table à dessin

Country Status (6)

Country Link
US (1) US4557450A (enrdf_load_stackoverflow)
EP (1) EP0106388B1 (enrdf_load_stackoverflow)
JP (1) JPS5977808A (enrdf_load_stackoverflow)
AU (1) AU553554B2 (enrdf_load_stackoverflow)
DE (1) DE3361435D1 (enrdf_load_stackoverflow)
FR (1) FR2533122B1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2551332B1 (fr) * 1983-09-07 1987-04-17 Alpia Sa Dispositif de securite pour l'immobilisation d'une colonne de table a dessin
US5289782A (en) * 1991-12-03 1994-03-01 Westinghouse Electric Corp. Adjustable height table
CN112128585A (zh) * 2020-09-17 2020-12-25 国网山东省电力公司烟台供电公司 一种配电线路在线监测装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096059A (en) * 1961-03-22 1963-07-02 F And F Koenigkramer Company Telescoping means having indexing, braking and interlocking means
DE1220570B (de) * 1962-02-19 1966-07-07 Pfaff Ag G M Zeichenbrettstaender
US3211250A (en) * 1962-12-21 1965-10-12 Garfield A Wood Seat-actuated brake and switch arrangement for motor vehicles
US3908944A (en) * 1972-12-04 1975-09-30 Domkraft Ab Nike Drawing table with drawing board relieved by gas spring
US4213244A (en) * 1978-05-08 1980-07-22 The Bendix Corporation Coordinate measuring machine having a failsafe protection system
DE3003119C2 (de) * 1979-02-12 1986-11-27 Société Jeandal, Besancon Vorrichtung zur Blockierung der Arbeitsfläche eines Zeichentisches

Also Published As

Publication number Publication date
AU553554B2 (en) 1986-07-17
FR2533122A1 (fr) 1984-03-23
EP0106388A1 (fr) 1984-04-25
JPS5977808A (ja) 1984-05-04
JPH0258922B2 (enrdf_load_stackoverflow) 1990-12-11
FR2533122B1 (fr) 1986-08-29
DE3361435D1 (en) 1986-01-16
US4557450A (en) 1985-12-10
AU1879583A (en) 1984-03-29

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