EP0369319B1 - Table with an adjustable top - Google Patents

Table with an adjustable top Download PDF

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Publication number
EP0369319B1
EP0369319B1 EP89120758A EP89120758A EP0369319B1 EP 0369319 B1 EP0369319 B1 EP 0369319B1 EP 89120758 A EP89120758 A EP 89120758A EP 89120758 A EP89120758 A EP 89120758A EP 0369319 B1 EP0369319 B1 EP 0369319B1
Authority
EP
European Patent Office
Prior art keywords
table top
wedge
abutment
adapter
table according
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
EP89120758A
Other languages
German (de)
French (fr)
Other versions
EP0369319A3 (en
EP0369319A2 (en
Inventor
Wolf Veyhl
Erwin Kübler
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.)
Veyhl GmbH and Co
Original Assignee
Veyhl GmbH and Co
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 Veyhl GmbH and Co filed Critical Veyhl GmbH and Co
Priority to AT89120758T priority Critical patent/ATE95392T1/en
Publication of EP0369319A2 publication Critical patent/EP0369319A2/en
Publication of EP0369319A3 publication Critical patent/EP0369319A3/en
Application granted granted Critical
Publication of EP0369319B1 publication Critical patent/EP0369319B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B21/00Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/06Tables or desks for office equipment, e.g. typewriters, keyboards characterised by means for holding, fastening or concealing cables
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B17/00Writing-tables
    • A47B17/02Writing-tables with vertically-adjustable parts
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B9/00Tables with tops of variable height
    • A47B9/18Tables with tops of variable height with additional top or additional legs for varying the height of the top
    • A47B2009/185Tables with tops of variable height with additional top or additional legs for varying the height of the top being positioned between the table top and the legs or underframe
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00General construction of tables or desks
    • A47B2200/0011Underframes
    • A47B2200/0013Desks with central bearing beams
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00General construction of tables or desks
    • A47B2200/0035Tables or desks with features relating to adjustability or folding
    • A47B2200/004Top adjustment
    • A47B2200/0043Inclination adjustable work top

Definitions

  • the invention relates to a table with a table frame, a table top movably mounted on the table frame and a device for adjusting the height of the table top relative to the table frame on at least one of its edges, at least one abutment being fixedly attached to the table frame below the table top.
  • Tables whose table top is adjustable in height and / or inclination are known in many embodiments. Tables with a height-adjustable table top make it possible to set a working height of the table top that is convenient for the person using the table, while tables with a tiltable table top offer the possibility of tilting a normally horizontal table top into a more convenient position for writing or drawing . If such tables do not have relatively complex, mechanical gears adjusting devices for the table top, locking devices in the form of bars, pens and the like are provided, the handling of which is relatively cumbersome, which often prevents the user from taking advantage of the proposed adjustment possibility.
  • a table with an adjustable table frame in which a table top movably mounted on the table frame can be adjusted with a device for adjusting the height of the table top relative to the table frame. This takes place at least on one of its edges and with at least one abutment for the table top which is firmly attached to the table frame.
  • the invention is therefore based on the object of designing a table of the type mentioned at the outset in such a way that the adjustment of the table top is not a problem, but without the device for adjusting the height or the inclination of the table top requiring great effort, in particular comprising complicated gears . At the same time, a stable fixation of the table top in the selected position should be ensured.
  • the abutment is assigned a wedge-shaped intermediate piece which is displaceably mounted in the opening direction of its angle substantially parallel to the table top and can be inserted more or less between the abutment and the table top, so that the position of the Intermediate piece determines the distance of the table top from the abutment and thus also the position of the table top relative to the table frame.
  • the table top is accordingly held in the selected position in that it is held by a wedge-shaped intermediate piece at a distance determined by the position of the intermediate piece from an abutment fixedly attached to the table frame. It can Take the intermediate piece a position in which the table top lies directly against the abutment, the distance of the table top from the abutment determined by the intermediate piece is therefore zero. In this case, the abutment defines the lowest position of the table top.
  • the table is therefore extremely easy to use.
  • the intermediate piece can either be attached to the table frame or the table top and there are many options for storing such an intermediate piece so that it can be inserted between the table top and the abutment or removed from the area between the table top and the abutment. In the simplest case, it is sufficient to attach the wedge-shaped intermediate piece to the end of a push rod which extends to the edge of the table top, so that it is easily possible for the user to move the intermediate piece by means of the push rod.
  • Such push rods would also make it possible to connect several wedge-shaped intermediate pieces with one another so that they can be moved together, which is particularly desirable when a parallel raising or lowering of the table top is to be possible by means of abutments and intermediate pieces arranged on several edges of the table top.
  • a table designed according to the invention can have a table top which can optionally be brought into one of two defined positions, namely a lower position in which the table top lies directly against the abutment, and in an upper position in which the wedge-shaped intermediate piece is completely inserted between the abutment and the table top.
  • a wedge offers the possibility of changing the distance of the table top in small steps or even continuously by changing the position of the wedge in relation to the abutment.
  • a preferred embodiment of the invention provides that the wedge-shaped intermediate piece has a first wedge surface parallel to its direction of displacement and a second wedge surface arranged obliquely thereto, and the second wedge surface rests on an inclined surface parallel to it in at least one defined position of the table top.
  • the first wedge surface forms a flat contact surface on a counter surface parallel to the direction of displacement, while the second wedge surface also comes into contact with a large area with an inclined surface provided for this purpose and parallel to the wedge surface.
  • the second wedge surface and the one next to it need it Sloping surface not necessarily to be flat, but they can advantageously be designed as cylindrical surfaces with generators parallel to the legs of the wedge angle, so that they produce a positive engagement transversely to the direction of displacement of the intermediate piece, which offers the possibility of securing the table top against one To give up the direction of movement of the intermediate piece in the vertical direction on the table frame.
  • the wedge surface and the inclined surface lying thereon can preferably be designed as circular cylindrical surfaces with essentially the same radius.
  • a preferred field of application of the invention can be found in tables which have a table top which is adjustable in inclination.
  • the table top is preferably pivotally mounted in the area of its rear edge and its inclination can be changed by adjusting its height in the area of the front edge.
  • a disadvantage of the previously known tables of this type was that the table top articulated in the region of its rear edge was supported on its front edge, which had the prerequisite that the table frame had parts reaching into the region of the front table edge, on which the Support can take place.
  • modern tables such as those used in particular as work tables in offices, often have a table frame which essentially consists only of two side parts provided with feet and a support connecting the side parts, which is arranged in the region of the rear edge of the table top.
  • a particular advantage of the invention is that it can also be implemented with such table frames. So is in a preferred embodiment of a table, the Table top is pivotally mounted in the area of its rear edge, the abutment is arranged near the rear edge of the table top. This abutment has an inclined surface against which the table top rests in its lowest position. From this lowest position, the table top can then be raised to the horizontal position by inserting the wedge-shaped intermediate piece between the abutment and the table top.
  • the push rod is guided in a bearing block attached to the underside of the table top. It carries a handle at its end opposite the intermediate piece and is surrounded by a helical compression spring which is supported on the one hand on the bearing block and on the other hand on the intermediate piece.
  • the table according to the invention also offers such a possibility, if, in a further embodiment of the invention, at least one hollow support extending perpendicularly to its rear edge is attached to the underside of the table top, the abutment protrudes into the rear end of the hollow support and the push rod is mounted with the intermediate piece within the hollow support and is movable in its longitudinal direction.
  • the stop with the hollow support can then be attached to a corresponding spar of the table frame, so that there is the possibility of attaching a table top corresponding to the respective customer request to such a hollow support.
  • the hollow beam can be connected in an especially advantageous manner to the stop protruding into its rear end.
  • a particularly simple and at the same time particularly stable design of the adjusting device can be achieved in that at least one wedge-shaped intermediate piece in the longitudinal direction of the Carrier is slidably arranged and on the underside of the table top a wedge piece associated with the intermediate piece and complementary to the intermediate piece is attached with an inclined surface inclined to the table surface against which the intermediate piece bears with its second wedge surface.
  • the table top is supported directly on the height-adjustable edge on a stable support, so that the table top is able to take up very high loads without special effort having to be made with regard to the stability of the table frame, as is more self-supporting in the application Arms to hold the table top is necessary.
  • the arrangement of a single intermediate piece between the support and the table top may be sufficient, but several such intermediate pieces may also be necessary.
  • two intermediate pieces are arranged at a distance from one another in the region of the height-adjustable edge of the table top, each of which is assigned a complementary wedge piece and which are connected to one another by a push rod extending parallel to the edge of the table top.
  • the connecting rod connecting the intermediate pieces is provided with a radially projecting handle and the support of the table frame, on which the intermediate pieces are arranged displaceably, several spaced apart, has the locking positions of the wedge-shaped intermediate pieces defining recesses into which the handle can be inserted.
  • the table frame shown in Fig. 1 has two side parts, each consisting of an elongated foot 1 and a column 2, which protrudes from the foot 1 near one of its ends.
  • the columns 2 are each formed by a channel-like profile, which allows the insertion of electrical lines and the like and is closed from the outside by a hood 3.
  • the two columns 2 are connected to each other by a longitudinal beam 4, which is also designed as a hollow profile.
  • Two stops 5 are attached to the longitudinal beam 4 at a distance from one another, on which hollow beams 6 are attached.
  • the hollow beams 6 are essentially horizontally from the side member 4 towards the same side, after which the feet 1 protrude beyond the column 2. They are used to fasten a table top 7, as indicated by dash-dotted lines in FIG. 1.
  • the abutments 5 consist of a profile part which is essentially U-shaped in cross section and which has a projecting tab 51 at one end, which engages in a slot 41 in the side member and is fastened to the side member.
  • the hollow supports 6 are pushed onto the abutments 5 and are connected to one another in an articulated manner by means of a bolt 8 passing through the lateral sections of the U-shaped profile and the lateral walls of the hollow supports 6.
  • the hollow beams 6 each consist of an upper plate 61, on the underside of which a type of hood 62 is fastened, the height of which decreases from the end of the hollow beam 6 facing the longitudinal beam 4 to the other end.
  • the abutments 5 each engage in the hood 62 of the associated hollow beam. They also taper in the direction of the end protruding from the longitudinal beam 4, more so than the hood 62, so that the hollow beam 6 can be pivoted by a certain angle relative to the abutment 5 about the axis formed by the bolt 8.
  • the plate 61 of the hollow support 6 In its upper position, which corresponds to the horizontal position of the table top 7, the plate 61 of the hollow support 6 forms an angle with the transverse web 52 of the abutment 5 forming a stop surface, which in the illustrated embodiment is arranged by a wedge-shaped intermediate piece 9 arranged inside the hood 62 is filled out.
  • This intermediate piece 9 is attached to the end of a rod 91 which is slidably mounted in a bearing block 92 fastened within the hood 62 on the underside of the plate 61.
  • a helical compression spring 93 which strives to hold the intermediate piece 9 in the area between the crosspiece 52 of the abutment 5 and the plate 61 carrying the table top 7.
  • the free end of the rod 91 protrudes from the hood 62 and is provided there with a button 94 serving as a handle.
  • the table top in the drawn-out position in FIG. 2 of the hollow support 6 is supported via the intermediate piece 9 on the crossbar 52 of the abutment 5 and is thus held securely in the horizontal position.
  • the intermediate piece 9 is pulled out of the area between the table top 7 and the abutment 5 in the opening direction of its wedge angle by pulling the button 94, the hollow support 6 with the table top 7 can pivot down into the position shown in broken lines in FIG. 2 in which position the hollow support 6 with its plate 61 rests directly against the stop surface formed by the crosspiece 52 of the abutment 5.
  • the inclination of the table top is approximately 10%.
  • the table top 7 If the table top 7 is to be brought back into a higher position, it is sufficient to raise the table top 7 slightly at its front edge. It then enters the wedge-shaped intermediate piece 9 under the force of the helical compression spring 93 into the space between the abutment 5 and the table top 7 (cross piece 52 and plate 61), to the extent that the space created by lifting the table top allows.
  • the force of the helical compression spring 93 is not sufficient to bring the hollow supports 6 with the table top 7 into the horizontal position beyond the position selected by lifting, while on the other hand between the surfaces of the wedge-shaped intermediate piece and the Transverse web 52 of the abutment 5 or the plate 61 of the hollow support 6 is sufficiently high to prevent the wedge-shaped intermediate piece 9 from being pressed outwards by the weight of the table top 7. It is therefore possible to bring the table top into any desired position by simply lifting and locking it without additional measures.
  • the front edge of the table top can be lowered just as easily by pulling out the intermediate pieces 9 from the area between the crosspiece 52 of the abutment 5 and the table top 7 by the desired amount.
  • the table shown in FIGS. 4 to 7 has two side parts 101, 102 which are connected to one another by two longitudinal members 103, 104 to form a stable frame, between the side parts 101, 102 of which a table top 105 is arranged.
  • the table top 105 connects with its rear edge to the one longitudinal beam 103 and is connected to this longitudinal beam in an articulated manner.
  • This articulated connection can be made by means of hinges but can also consist only in a simple support of the rear edge of the table top 105 on a contact surface attached to the longitudinal beam 103.
  • the other longitudinal beam 104 is located in the front area of the table top 105 and is arranged below the table top, so that it is not visible in FIG. 4.
  • the carrier 104 arranged at the front edge of the table top 105 is designed as an upwardly open hollow profile in which two blocks 106 belonging to an adjusting device are slidably mounted.
  • Two angle rails 141, 142 which are on the side walls of the hollow support, are used to support these blocks 106 104 are fastened in such a way that their webs 143, 144 projecting from the side walls face each other in a plane parallel to the axis of the carrier 104. These webs engage in corresponding slots 161, 162 on the side surfaces of the blocks 106, so that these webs form slide rails for the blocks.
  • the two blocks 106 are connected to one another by a push rod 107, which has a radially protruding handle 170 in the area of its center, which penetrates a slot 145, which is provided in the side wall of the carrier 104 facing the edge of the table top 105.
  • This slot 145 has three spaced-apart recesses 146, into which the handle 171 projecting radially from the push rod 107 can be inserted by pivoting the push rod.
  • These three cutouts 146 define discrete locking positions for the blocks 106 which can be displaced along the carrier 104 by means of the push rod 107.
  • the blocks 106 form wedge-shaped intermediate pieces with which wedge pieces 108 fastened on the underside of the table top 105 interact.
  • These wedge pieces have a flat surface 181, with which they rest on the underside of the table top 105, and an inclined surface 182 inclined to the table surface, which in the exemplary embodiment shown is formed by a circular cylindrical surface which has an axis which is inclined to the flat contact surface 181.
  • This inclined surface 182 runs parallel to a cylindrical wedge surface 163, which is formed by a corresponding recess in the block 106.
  • the arrangement is such that the inclined surfaces 182, which are located on the wedge pieces 108 attached to the underside of the table surface 105, bear against the wedge surfaces 163 of the blocks 106.
  • these blocks 106 form wedge-shaped intermediate pieces which are connected to a first wedge surface 164 on the bottom of the carrier 104 or with the parallel grooves 161, 162 on the angle rails 141, 142 fastened in the carrier 104 are guided in the direction of displacement of the blocks 106, while on the second wedge surfaces 163 the tabletop 105 with the interposition of the wedge pieces 108 comes to the plant. Accordingly, the table top 105 is supported on the carrier 104 with the interposition of the wedge pieces 108 and the intermediate pieces 106, the position of the intermediate pieces 106 determining the distance of the table top 105 from the carrier 104.
  • the intermediate pieces 106 can be shifted to the right in the drawing so that the table top 105 comes to rest directly on the upper side of the carrier 104. From this position, the table top 105 is raised when the intermediate pieces formed by the blocks 106 are moved to the left by means of the handle 171 attached to the push rod 107. Before the uppermost position shown in FIG. 6 is reached, the handle 171 passes through a central recess 146 at the edge of the slot 145, through which a central locking position for the intermediate pieces 106 and thus also for the table top 105 is defined. It goes without saying that a larger number of such locking positions could also be provided. Here too, after lifting the table top at the front edge, the intermediate pieces can be adjusted by actuating push rod 107 on handle 171 without great effort.
  • the invention is not limited to the exemplary embodiments shown, but deviations are possible without leaving the scope of the invention.
  • Intermediate table top arranged to be displaceable perpendicularly to this front edge, and it would also be conceivable to arrange wedge-shaped intermediate pieces on at least two parallel edges of the table top and to connect them to one another such that the simultaneous adjustment of all intermediate pieces enables the table top to be raised or lowered in parallel.
  • the wedge surfaces of the intermediate piece and of the wedge piece interacting therewith do not necessarily have to be rectilinear in the direction of displacement, but could have a fine gradation which forms a detent preventing an undesired displacement of the intermediate pieces.
  • adjustable intermediate pieces and / or the associated abutments can be attached not only to the side members of the table frame, but also to the side parts thereof. Accordingly, a variety of modifications will be apparent to those skilled in the art, all of which are within the scope of the invention as defined by the claims.

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  • Tables And Desks Characterized By Structural Shape (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
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  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)

Abstract

Tables with a top (7) which is mounted movably on the table frame and is adjustable have proved to be useful for many purposes. However, the adjusting devices used previously in such tables are either very complicated or difficult to handle. <??>An adjustment device which is of very simple construction and is easy to handle is provided by the fact that at least one abutment (5) is attached fixedly below the table top (7) on the table frame and the abutment (5) is assigned a wedge-shaped intermediate piece (9) which is mounted displaceably in the direction of opening of its wedge angle essentially parallel to the table top (7) and can be inserted to a greater or lesser extent between the abutment (5) and the table top (7) so that the position of the intermediate piece (9) determines the distance of the table top from the abutment and thus also the position of the table top relative to the table frame. <IMAGE>

Description

Die Erfindung betrifft einen Tisch mit einem Tischgestell, einer am Tischgestell beweglich gelagerten Tischplatte und einer Vorrichtung zum Verstellen der Höhe der Tischplatte gegenüber dem Tischgestell an wenigstens einem ihrer Ränder, wobei unterhalb der Tischplatte am Tischgestell wenigstens ein Widerlager fest angebracht ist.The invention relates to a table with a table frame, a table top movably mounted on the table frame and a device for adjusting the height of the table top relative to the table frame on at least one of its edges, at least one abutment being fixedly attached to the table frame below the table top.

Tische, deren Tischplatte in der Höhe und/oder der Neigung verstellbar ist, sind in vielen Ausführungsformen bekannt. Tische mit in der Höhe verstellbarer Tischplatte ermöglichen es, eine für die den Tisch benutzende Person günstige Arbeitshöhe der Tischplatte einzustellen, während Tische mit in der Neigung verstellbarer Tischplatte die Möglichkeit bieten, eine normalerweise horizontale Tischplatte in eine für das Schreiben oder Zeichnen zweckmäßigere Schrägstellung zu bringen. Sofern solche Tische nicht relativ aufwendige, mechanische Getriebe umfassende Verstelleinrichtungen für die Tischplatte aufweisen, sind Rasteinrichtungen in Form von Riegeln, Stiften und dergleichen vorgesehen, deren Handhabung relativ umständlich ist, was den Benutzer oft daran hindert, die vorgesehene Verstellmöglichkeit auszunutzen.Tables whose table top is adjustable in height and / or inclination are known in many embodiments. Tables with a height-adjustable table top make it possible to set a working height of the table top that is convenient for the person using the table, while tables with a tiltable table top offer the possibility of tilting a normally horizontal table top into a more convenient position for writing or drawing . If such tables do not have relatively complex, mechanical gears adjusting devices for the table top, locking devices in the form of bars, pens and the like are provided, the handling of which is relatively cumbersome, which often prevents the user from taking advantage of the proposed adjustment possibility.

Aus der DE-OS-32 24 540 ist ein Tisch mit einem verstellbaren Tischgestell bekannt, bei dem eine am Tischgestell beweglich gelagerte Tischplatte mit einer Vorrichtung zum Verstellen der Höhe der Tischplatte gegenüber dem Tischgestell verstellt werden kann. Dies geschieht wenigstens an einem ihrer Ränder und mit wenigstens einem am Tischgestell fest angebrachten Widerlager für die Tischplatte.From DE-OS-32 24 540 a table with an adjustable table frame is known, in which a table top movably mounted on the table frame can be adjusted with a device for adjusting the height of the table top relative to the table frame. This takes place at least on one of its edges and with at least one abutment for the table top which is firmly attached to the table frame.

Daher liegt der Erfindung die Aufgabe zugrunde, einen Tisch der eingangs genannten Art so auszubilden, das die Verstellung der Tischplatte keine Mühe bereitet, ohne daß hierfür jedoch die Vorrichtung zum Verstellen der Höhe oder der Neigung der Tischplatte einen großen Aufwand erfordert, insbesondere komplizierte Getriebe umfaßt. Zugleich soll eine stabile Fixierung der Tischplatte in der gewählten Lage gewährleistet sein.The invention is therefore based on the object of designing a table of the type mentioned at the outset in such a way that the adjustment of the table top is not a problem, but without the device for adjusting the height or the inclination of the table top requiring great effort, in particular comprising complicated gears . At the same time, a stable fixation of the table top in the selected position should be ensured.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, daß dem Widerlager ein keilförmiges Zwischenstück zugeordnet ist, das in der Öffnungsrichtung seines Winkels im wesentlichen parallel zur Tischplatte verschiebbar gelagert und mehr oder weniger weit zwischen das Widerlager und die Tischplatte einführbar ist, so daß die Stellung des Zwischenstücks den Abstand der Tischplatte vom Widerlager und damit auch die Stellung der Tischplatte relativ zum Tischgestell bestimmt.This object is achieved according to the invention in that the abutment is assigned a wedge-shaped intermediate piece which is displaceably mounted in the opening direction of its angle substantially parallel to the table top and can be inserted more or less between the abutment and the table top, so that the position of the Intermediate piece determines the distance of the table top from the abutment and thus also the position of the table top relative to the table frame.

Bei dem erfindungsgemäßen Tisch wird demgemäß die Tischplatte in der gewählten Stellung dadurch gehalten, daß sie durch ein keilförmiges Zwischenstück in einem durch die Stellung des Zwischenstückes bestimmten Abstand von einem am Tischgestell fest angebrachten Widerlager gehalten wird. Dabei kann das Zwischenstück eine Stellung einnehmen, in der die Tischplatte am Widerlager unmittelbar anliegt, der durch das Zwischenstück bestimmte Abstand der Tischplatte vom Widerlager also Null ist. In diesem Fall definiert das Widerlager die tiefste Stellung der Tischplatte.In the table according to the invention, the table top is accordingly held in the selected position in that it is held by a wedge-shaped intermediate piece at a distance determined by the position of the intermediate piece from an abutment fixedly attached to the table frame. It can Take the intermediate piece a position in which the table top lies directly against the abutment, the distance of the table top from the abutment determined by the intermediate piece is therefore zero. In this case, the abutment defines the lowest position of the table top.

Die Anordnung eines keilförmigen Zwischenstückes bereitet keine technischen Schwierigkeiten. Zur Halterung des Zwischenstückes genügen einfache Führungsmittel, weil diese Führungsmittel keine nennenswerten Kräfte aufzunehmen haben, da eine einfache Druckübertragung von der Tischplatte über das Zwischenstück auf das am Tischgestell fest angebrachte Widerlager stattfindet. Obwohl die Tischplatte auf dem Zwischenstück und das Zwischenstück wiederum auf dem Widerlager im wesentlichen nur lose aufliegt, wird die Tischplatte doch in der gewählten Lage sicher gehalten, da sie stets von oben belastet wird und es daher ausreicht, sie von unten stabil abzustützen. Die Verwendung eines Widerlagers, an dem die Tischplatte unmittelbar oder mittelbar über das Zwischenstück anliegt, genügt diesen Anforderungen völlig. Dabei ist es leicht möglich, bei entlasteter Tischplatte das Zwischenstück nach Wunsch mehr oder weniger weit zwischen die Tischplatte und das Widerlager einzuführen. Die Handhabung des Tisches ist demnach extrem einfach. Dabei kann das Zwischenstück wahlweise am Tischgestell oder der Tischplatte angebracht sein und es gibt viele Möglichkeiten, um ein solches Zwischenstück beweglich zu lagern, damit es bei Bedarf zwischen Tischplatte und Widerlager einführbar bzw. aus dem Bereich zwischen Tischplatte und Widerlager entfernbar ist. Im einfachsten Fall genügt es, das keilförmige Zwischenstück am Ende einer Schubstange anzubringen, die bis zum Rand der Tischplatte reicht, so daß es dem Benutzer leicht möglich ist, das Zwischenstück mittels der Schubstange zu bewegen. Solche Schubstangen würden es auch ermöglichen, mehrere keilförmige Zwischenstücke miteinander zu verbinden, so daß sie gemeinsam bewegbar sind, was insbesondere dann wünschenswert ist, wenn durch an mehreren Rändern der Tischplatte angeordnete Widerlager und Zwischenstücke ein paralleles Anheben oder Absenken der Tischplatte möglich sein soll.The arrangement of a wedge-shaped intermediate piece presents no technical difficulties. Simple guide means are sufficient to hold the intermediate piece, because these guide means do not have to absorb any significant forces, since a simple pressure transfer takes place from the table top via the intermediate piece to the abutment fixedly attached to the table frame. Although the table top on the intermediate piece and the intermediate piece in turn lies only loosely on the abutment, the table top is nevertheless held securely in the chosen position, since it is always loaded from above and it is therefore sufficient to support it stably from below. The use of an abutment against which the table top lies directly or indirectly via the intermediate piece fully meets these requirements. It is easily possible to insert the intermediate piece more or less between the table top and the abutment as desired when the table top is relieved. The table is therefore extremely easy to use. The intermediate piece can either be attached to the table frame or the table top and there are many options for storing such an intermediate piece so that it can be inserted between the table top and the abutment or removed from the area between the table top and the abutment. In the simplest case, it is sufficient to attach the wedge-shaped intermediate piece to the end of a push rod which extends to the edge of the table top, so that it is easily possible for the user to move the intermediate piece by means of the push rod. Such push rods would also make it possible to connect several wedge-shaped intermediate pieces with one another so that they can be moved together, which is particularly desirable when a parallel raising or lowering of the table top is to be possible by means of abutments and intermediate pieces arranged on several edges of the table top.

Im einfachsten Fall kann ein nach der Erfindung ausgebildeter Tisch eine Tischplatte haben, die wahlweise in eine von zwei definierten Stellungen bringbar ist, nämlich eine untere Stellung, in der die Tischplatte am Widerlager unmittelbar anliegt, und in eine obere Stellung, in welcher das keilförmige Zwischenstück gänzlich zwischen das Widerlager und die Tischplatte eingefügt ist. Die Verwendung eines Keiles bietet aber gerade die Möglichkeit, durch Verändern der Stellung des Keiles in Bezug auf das Widerlager den Abstand der Tischplatte in kleinen Schritten oder sogar stufenlos zu verändern.In the simplest case, a table designed according to the invention can have a table top which can optionally be brought into one of two defined positions, namely a lower position in which the table top lies directly against the abutment, and in an upper position in which the wedge-shaped intermediate piece is completely inserted between the abutment and the table top. However, the use of a wedge offers the possibility of changing the distance of the table top in small steps or even continuously by changing the position of the wedge in relation to the abutment.

Für eine gute Kraftübertragung zwischen dem keilförmigen Zwischenstück und den angrenzenden Bauteilen ist eine möglichst großflächige Berührung günstig. Daher sieht eine bevorzugte Ausführungsform der Erfindung vor, daß das keilförmige Zwischenstück eine zu seiner Verschieberichtung parallele erste Keilfläche und eine dazu schräg angeordnete zweite Keilfläche aufweist und die zweite Keilfläche in wenigstens einer definierten Stellung der Tischplatte an einer dazu parallelen Schrägfläche anliegt. Bei dieser Ausführungsform der Erfindung bildet die erste Keilfläche eine ebene Anlagefläche an einer zur Verschieberichtung parallelen Gegenfläche, während die zweite Keilfläche mit einer für diesen Zweck vorgesehenen, zur Keilfläche parallelen Schrägfläche ebenfalls großflächig zur Anlage kommt. Dabei brauchen die zweite Keilfläche und die daran anliegende Schrägfläche nicht unbedingt eben zu sein, sondern sie können vorteilhaft als Zylinderflächen mit zu den Schenkeln des Keilwinkels parallelen Erzeugenden ausgebildet sein, so daß sie quer zur Verschieberichtung des Zwischenstückes einen formschlüssigen Eingriff herstellen, der die Möglichkeit bietet, auf eine Sicherung der Tischplatte gegen eine zur Bewegungsrichtung des Zwischenstückes senkrechten Richtung am Tischgestell zu verzichten. Dabei können die Keilfläche und die daran anliegende Schrägfläche vorzugsweise als Kreiszylinderflächen mit im wesentlichen gleichem Radius ausgebildet sein.For a good power transmission between the wedge-shaped intermediate piece and the adjacent components, contact as large as possible is favorable. Therefore, a preferred embodiment of the invention provides that the wedge-shaped intermediate piece has a first wedge surface parallel to its direction of displacement and a second wedge surface arranged obliquely thereto, and the second wedge surface rests on an inclined surface parallel to it in at least one defined position of the table top. In this embodiment of the invention, the first wedge surface forms a flat contact surface on a counter surface parallel to the direction of displacement, while the second wedge surface also comes into contact with a large area with an inclined surface provided for this purpose and parallel to the wedge surface. The second wedge surface and the one next to it need it Sloping surface not necessarily to be flat, but they can advantageously be designed as cylindrical surfaces with generators parallel to the legs of the wedge angle, so that they produce a positive engagement transversely to the direction of displacement of the intermediate piece, which offers the possibility of securing the table top against one To give up the direction of movement of the intermediate piece in the vertical direction on the table frame. The wedge surface and the inclined surface lying thereon can preferably be designed as circular cylindrical surfaces with essentially the same radius.

Wie bereits erwähnt, findet sich ein bevorzugter Anwendungsbereich der Erfindung bei Tischen, die eine in der Neigung verstellbare Tischplatte haben. Bei solchen Tischen ist die Tischplatte vorzugsweise im Bereich ihres hinteren Randes schwenkbar gelagert und ihre Neigung durch Verstellen ihrer Höhe im Bereich des vorderen Randes veränderbar. Ein Nachteil der bisher bekannten Tische solcher Art bestand darin, daß die Abstützung der im Bereich ihres hinteren Randes angelenkten Tischplatte an ihrem vorderen Rand erfolgte, was zur Voraussetzung hatte, daß das Tischgestell bis in den Bereich des vorderen Tischrandes reichende Teile hat, an denen die Abstützung stattfinden kann. Moderne Tische, wie sie insbesondere als Arbeitstische in Büros Verwendung finden, weisen jedoch häufig ein Tischgestell auf, das im wesentlichen nur aus zwei mit Füßen versehenen Seitenteilen und einem die Seitenteile verbindenden Träger besteht, der im Bereich des hinteren Randes der Tischplatte angeordnet ist.As already mentioned, a preferred field of application of the invention can be found in tables which have a table top which is adjustable in inclination. In such tables, the table top is preferably pivotally mounted in the area of its rear edge and its inclination can be changed by adjusting its height in the area of the front edge. A disadvantage of the previously known tables of this type was that the table top articulated in the region of its rear edge was supported on its front edge, which had the prerequisite that the table frame had parts reaching into the region of the front table edge, on which the Support can take place. However, modern tables, such as those used in particular as work tables in offices, often have a table frame which essentially consists only of two side parts provided with feet and a support connecting the side parts, which is arranged in the region of the rear edge of the table top.

Ein besonderer Vorteil der Erfindung besteht darin, daß sie sich auch bei solchen Tischgestellen realisieren läßt. So ist bei einer bevorzugten Ausführungsform eines Tisches, dessen Tischplatte im Bereich ihres hinteren Randes schwenkbar gelagert ist, das Widerlager nahe dem hinteren Rand der Tischplatte angeordnet. Dieses Widerlager weist eine geneigte Fläche auf, an der die Tischplatte in ihrer untersten Stellung anliegt. Aus dieser untersten Stellung kann dann die Tischplatte durch Einfügen des keilförmigen Zwischenstückes zwischen das Widerlager und die Tischplatte bis in die Horizontalstellung angehoben werden.A particular advantage of the invention is that it can also be implemented with such table frames. So is in a preferred embodiment of a table, the Table top is pivotally mounted in the area of its rear edge, the abutment is arranged near the rear edge of the table top. This abutment has an inclined surface against which the table top rests in its lowest position. From this lowest position, the table top can then be raised to the horizontal position by inserting the wedge-shaped intermediate piece between the abutment and the table top.

Besonders für diese Ausführungsform der Erfindung ist es zweckmäßig, das keilförmige Zwischenstück am Ende einer Schubstange anzubringen, die an der Unterseite der Tischplatte gelagert ist und sich bis zu deren vorderem Rand erstreckt. Es ist dann ohne weiteres möglich, die Tischplatte am vorderen Rand zum Zweck der Verstellung zu ergreifen und leicht anzuheben und dann durch Betätigen des Schiebers das Zwischenstück ein- bzw. auszurücken. Dieser Vorgang kann durch eine die Schubstange belastende Feder erleichtert werden.Particularly for this embodiment of the invention, it is expedient to attach the wedge-shaped intermediate piece at the end of a push rod which is mounted on the underside of the table top and extends to its front edge. It is then easily possible to grasp the table top at the front edge for the purpose of adjustment and to raise it slightly and then to engage or disengage the intermediate piece by actuating the slide. This process can be facilitated by a spring loading the push rod.

Bei einer bevorzugten Ausführungsform der Erfindung ist die Schubstange in einem an der Unterseite der Tischplatte angebrachten Lagerblock geführt. Sie trägt an ihrem zum Zwischenstück entgegengesetzten Ende einen Handgriff und ist von einer Schraubendruckfeder umgeben, die sich einerseits am Lagerblock und andererseits am Zwischenstück abstützt.In a preferred embodiment of the invention, the push rod is guided in a bearing block attached to the underside of the table top. It carries a handle at its end opposite the intermediate piece and is surrounded by a helical compression spring which is supported on the one hand on the bearing block and on the other hand on the intermediate piece.

Insbesondere bei Büromöbeln besteht die Forderung, daß sie sich bezüglich ihrer Oberflächenstruktur und Farbe an eine bestehende Einrichtung anpassen lassen. Daher ist es vielfach üblich, Bürotische so auszubilden, daß ein Standard-Tischgestell mit Tischplatten unterschiedlicher Art versehen werden kann. Eine solche Möglichkeit bietet auch der erfindungsgemäße Tisch, wenn in weiterer Ausgestaltung der Erfindung an der Unterseite der Tischplatte wenigstens ein sich senkrecht zu ihrem hinteren Rand erstreckender Hohlträger angebracht ist, das Widerlager in das hintere Ende des Hohlträgers hineinragt und die Schubstange mit dem Zwischenstück innerhalb des Hohlträgers gelagert und in dessen Längsrichtung beweglich ist. Es kann dann der Anschlag mit dem Hohlträger an einem entsprechenden Holm des Tischgestelles angebracht sein, so daß die Möglichkeit besteht, eine dem jeweiligen Kundenwunsch entsprechende Tischplatte an einem solchen Hohlträger zu befestigen. Dabei kann der Hohlträger in besonders vorteilhafter Weise mit dem in sein hinteres Ende hineinragenden Anschlag gelenkig verbunden sein.In the case of office furniture in particular, there is a requirement that their surface structure and color be adaptable to an existing facility. It is therefore common practice to design office tables so that a standard table frame can be provided with table tops of different types. The table according to the invention also offers such a possibility, if, in a further embodiment of the invention, at least one hollow support extending perpendicularly to its rear edge is attached to the underside of the table top, the abutment protrudes into the rear end of the hollow support and the push rod is mounted with the intermediate piece within the hollow support and is movable in its longitudinal direction. The stop with the hollow support can then be attached to a corresponding spar of the table frame, so that there is the possibility of attaching a table top corresponding to the respective customer request to such a hollow support. The hollow beam can be connected in an especially advantageous manner to the stop protruding into its rear end.

Bei Tischen, bei denen das Tischgestell einen Träger aufweist, der sich parallel zu dem wenigstens einen in der Höhe verstellbaren Rand der Tischplatte erstreckt, kann eine besonders einfache und zugleich besonders stabile Ausbildung der Verstellvorrichtung dadurch erzielt werden, daß wenigstens ein keilförmiges Zwischenstück in Längsrichtung des Trägers verschiebbar angeordnet ist und an der Unterseite der Tischplatte ein dem Zwischenstück zugeordnetes, zum Zwischenstück komplementäres Keilstück mit einer zur Tischfläche geneigten Schrägfläche angebracht ist, an der das Zwischenstück mit seiner zweiten Keilfläche anliegt. In diesem Fall ist die Tischplatte unmittelbar an dem in der Höhe verstellbaren Rand an einem stabilen Träger abgestützt, so daß die Tischplatte sehr hohe Belastungen aufzunehmen vermag, ohne daß ein besonderer Aufwand hinsichtlich der Stabilität des Tischgestelles getrieben werden muß, wie es bei der Anwendung freitragender Arme zum Halten der Tischplatte notwendig ist.In tables in which the table frame has a carrier which extends parallel to the at least one height-adjustable edge of the table top, a particularly simple and at the same time particularly stable design of the adjusting device can be achieved in that at least one wedge-shaped intermediate piece in the longitudinal direction of the Carrier is slidably arranged and on the underside of the table top a wedge piece associated with the intermediate piece and complementary to the intermediate piece is attached with an inclined surface inclined to the table surface against which the intermediate piece bears with its second wedge surface. In this case, the table top is supported directly on the height-adjustable edge on a stable support, so that the table top is able to take up very high loads without special effort having to be made with regard to the stability of the table frame, as is more self-supporting in the application Arms to hold the table top is necessary.

Je nach der Länge der Tischplatte kann die Anordnung eines einzigen Zwischenstückes zwischen dem Träger und der Tischplatte ausreichen, es können aber auch mehrere solcher Zwischenstücke notwendig sein. Bei einer besonders bevorzugten Ausführungsform der Erfindung sind im Bereich des in der Höhe verstellbaren Randes der Tischplatte im Abstand voneinander zwei Zwischenstücke angeordnet, denen jeweils ein komplementäres Keilstück zugeordnet ist und die durch eine sich parallel zum Rand der Tischplatte erstreckende Schubstange miteinander verbunden sind.Depending on the length of the table top, the arrangement of a single intermediate piece between the support and the table top may be sufficient, but several such intermediate pieces may also be necessary. In a particularly preferred embodiment of the invention, two intermediate pieces are arranged at a distance from one another in the region of the height-adjustable edge of the table top, each of which is assigned a complementary wedge piece and which are connected to one another by a push rod extending parallel to the edge of the table top.

Um mit Sicherheit zu verhindern, daß auch bei hohen Belastungen das keilförmige Zwischenstück nicht aus dem Bereich zwischen Widerlager und Tischplatte herausgedrückt wird, kann es angebracht sein, für das keilförmige Zwischenstück mehrere diskrete Raststellungen vorzusehen. Solche Raststellung lassen sich bei der zuletzt behandelten, bevorzugten Ausführungsform der Erfindung leicht dadurch realisieren, daß die die Zwischenstücke verbindende Schubstange mit einem radial abstehenden Handgriff versehen ist und der Träger des Tischgestelles, an dem die Zwischenstücke verschiebbar angeordnet sind, mehrere im Abstand voneinander angeordnete, die Raststellungen der keilförmigen Zwischenstücke definierenden Aussparungen aufweist, in die der Handgriff einführbar ist.In order to prevent with certainty that the wedge-shaped intermediate piece is not pressed out of the area between the abutment and table top even under high loads, it may be appropriate to provide several discrete locking positions for the wedge-shaped intermediate piece. Such locking position can be easily achieved in the last discussed, preferred embodiment of the invention in that the connecting rod connecting the intermediate pieces is provided with a radially projecting handle and the support of the table frame, on which the intermediate pieces are arranged displaceably, several spaced apart, has the locking positions of the wedge-shaped intermediate pieces defining recesses into which the handle can be inserted.

Die Erfindung wird im folgenden anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher beschrieben und erläutert. Die der folgenden Beschreibung und der Zeichnung zu entnehmenden Merkmale können bei anderen Ausführungsformen der Erfindung einzeln für sich oder zu mehreren in beliebiger Kombination Anwendung finden. Es zeigen

Fig. 1
das Gestell eines nach der Erfindung ausgebildeten Tisches in Explosionsdarstellung,
Fig. 2
einen Längschnitt durch einen Hohlträger des Tischgestelles nach Fig. 1,
Fig. 3
eine Draufsicht auf den Hohlträger nach Fig.2,
Fig. 4
die Ansicht eines weiteren, nach der Erfindung ausgebildeten Tisches,
Fig. 5
eine Ansicht des vorderen Randes der Tischplatte und des ihn abstützenden Trägers des Tisches nach Fig. 4 in Richtung des Pfeiles V in vergrößertem Maßstab,
Fig. 6
eine Ansicht ähnlich Fig. 5 jedoch mit hochgestellter Tischplatte und
Fig. 7
eine Explosionsdarstellung der Verstellvorrichtung des Tisches nach Fig. 4.
The invention is described and explained in more detail below with reference to the exemplary embodiments shown in the drawing. The features to be gathered from the following description and the drawing can be used in other embodiments of the invention individually or in combination in any combination. Show it
Fig. 1
the frame of a table designed according to the invention in an exploded view,
Fig. 2
2 shows a longitudinal section through a hollow support of the table frame according to FIG. 1,
Fig. 3
a plan view of the hollow beam according to Figure 2,
Fig. 4
the view of another table designed according to the invention,
Fig. 5
4 in the direction of arrow V on an enlarged scale,
Fig. 6
a view similar to FIG. 5 but with the table top and
Fig. 7
4 shows an exploded view of the adjusting device of the table according to FIG. 4.

Das in Fig. 1 dargestellte Tischgestell weist zwei Seitenteile auf, die jeweils aus einem langgestreckten Fuß 1 und einer Säule 2 bestehen, die von dem Fuß 1 nahe einem seiner Enden aufragt. Die Säulen 2 werden jeweils von einem rinnenartigen Profil gebildet, welches das Einlegen elektrischer Leitungen und dergleichen ermöglicht und von außen durch eine Haube 3 abgeschlossen ist. Die beiden Säulen 2 sind durch einen Längsträger 4 miteinander verbunden, der ebenfalls als Hohlprofil ausgebildet ist. An dem Längsträger 4 sind mit Abstand voneinander zwei Anschläge 5 (siehe auch Fig. 2) befestigt, an denen Hohlträger 6 angebracht sind. Die Hohlträger 6 stehen im wesentlichen horizontal von dem Längträger 4 nach der gleichen Seite hin ab, nach der die Füße 1 über die Säule 2 überstehen. Sie dienen zur Befestigung einer Tischplatte 7, wie sie in Fig. 1 strichpunktiert angedeutet ist.The table frame shown in Fig. 1 has two side parts, each consisting of an elongated foot 1 and a column 2, which protrudes from the foot 1 near one of its ends. The columns 2 are each formed by a channel-like profile, which allows the insertion of electrical lines and the like and is closed from the outside by a hood 3. The two columns 2 are connected to each other by a longitudinal beam 4, which is also designed as a hollow profile. Two stops 5 (see also FIG. 2) are attached to the longitudinal beam 4 at a distance from one another, on which hollow beams 6 are attached. The hollow beams 6 are essentially horizontally from the side member 4 towards the same side, after which the feet 1 protrude beyond the column 2. They are used to fasten a table top 7, as indicated by dash-dotted lines in FIG. 1.

Wie aus den Figuren 2 und 3 ersichtlich, bestehen die Widerlager 5 aus einem im Querschnitt im wesentlichen U-förmigen Profilteil, das an einem Ende eine überstehende Lasche 51 aufweist, die in einen Schlitz 41 des Längsträgers eingreift und am Längsträger befestigt ist. Die Hohlträger 6 sind auf die Widerlager 5 aufgeschoben und mittels eines die seitlichen Abschnitte des U-förmigen Profils und die seitlichen Wandungen der Hohlträger 6 durchsetzenden Bolzens 8 gelenkig miteinander verbunden.As can be seen from FIGS. 2 and 3, the abutments 5 consist of a profile part which is essentially U-shaped in cross section and which has a projecting tab 51 at one end, which engages in a slot 41 in the side member and is fastened to the side member. The hollow supports 6 are pushed onto the abutments 5 and are connected to one another in an articulated manner by means of a bolt 8 passing through the lateral sections of the U-shaped profile and the lateral walls of the hollow supports 6.

Die Hohlträger 6 bestehen jeweils aus einer oberen Platte 61, an deren Unterseite eine Art Haube 62 befestigt ist, deren Höhe von dem dem Längsträger 4 zugewandten Ende des Hohlträgers 6 zum anderen Ende hin abnimmt. Die Widerlager 5 greifen jeweils in die Haube 62 des zugeordneten Hohlträgers ein. Auch sie verjüngen sich in Richtung auf das von dem Längsträger 4 abstehende Ende, und zwar stärker als die Haube 62, so daß der Hohlträger 6 gegenüber dem Widerlager 5 um die von dem Bolzen 8 gebildete Achse um einen gewissen Winkel verschwenkbar ist. In seiner oberen Stellung, die der waagerechten Stellung der Tischplatte 7 entspricht, bildet die Platte 61 des Hohlträgers 6 mit dem eine Anschlagfläche bildenden Quersteg 52 des Widerlagers 5 einen Winkel, der bei dem dargestellten Ausführungsbeispiel von einem innerhalb der Haube 62 angeordneten, keilförmigen Zwischenstück 9 ausgefüllt wird. Dieses Zwischenstück 9 ist am Ende einer Stange 91 befestigt, die in einem innerhalb der Haube 62 an der Unterseite der Platte 61 befestigten Lagerblock 92 verschiebbar gelagert ist. Auf dem zwischen dem Lagerblock 92 und dem keilförmigen Zwischenstück 9 liegenden Abschnitt der Stange 91 befindet sich eine Schraubendruckfeder 93, die bestrebt ist, das Zwischenstück 9 in dem Bereich zwischen dem Quersteg 52 des Widerlagers 5 und der die Tischplatte 7 tragenden Platte 61 zu halten. Die Stange 91 ragt mit ihrem freien Ende aus der Haube 62 heraus und ist dort mit einem als Handgriff 94 dienenden Knopf versehen.The hollow beams 6 each consist of an upper plate 61, on the underside of which a type of hood 62 is fastened, the height of which decreases from the end of the hollow beam 6 facing the longitudinal beam 4 to the other end. The abutments 5 each engage in the hood 62 of the associated hollow beam. They also taper in the direction of the end protruding from the longitudinal beam 4, more so than the hood 62, so that the hollow beam 6 can be pivoted by a certain angle relative to the abutment 5 about the axis formed by the bolt 8. In its upper position, which corresponds to the horizontal position of the table top 7, the plate 61 of the hollow support 6 forms an angle with the transverse web 52 of the abutment 5 forming a stop surface, which in the illustrated embodiment is arranged by a wedge-shaped intermediate piece 9 arranged inside the hood 62 is filled out. This intermediate piece 9 is attached to the end of a rod 91 which is slidably mounted in a bearing block 92 fastened within the hood 62 on the underside of the plate 61. On the one between the bearing block 92 and the wedge-shaped intermediate piece 9 lying section of the rod 91 there is a helical compression spring 93, which strives to hold the intermediate piece 9 in the area between the crosspiece 52 of the abutment 5 and the plate 61 carrying the table top 7. The free end of the rod 91 protrudes from the hood 62 and is provided there with a button 94 serving as a handle.

Es ist leicht ersichtlich, daß sich die Tischplatte in der in Fig. 2 ausgezogen wiedergegebenen Stellung des Hohlträgers 6 über das Zwischenstück 9 an dem Quersteg 52 des Widerlagers 5 abstützt und auf diese Weise sicher in der horizontalen Stellung gehalten wird. Wird dagegen durch Ziehen am Knopf 94 das Zwischenstück 9 in der Öffnungsrichtung seines Keilwinkels aus dem Bereich zwischen der Tischplatte 7 und dem Widerlager 5 herausgezogen, so kann der Hohlträger 6 mit der Tischplatte 7 bis in die in Fig. 2 gestrichelt gezeichnete Stellung nach unten schwenken, in welcher Stellung der Hohlträger 6 mit seiner Platte 61 unmittelbar an der vom Quersteg 52 des Widerlagers 5 gebildeten Anschlagfläche anliegt. In diesem Fall beträgt die Neigung der Tischplatte etwa 10%. Wenn die Tischplatte 7 wieder in eine höhere Stellung gebracht werden soll, genügt es, die Tischplatte 7 an ihrem vorderen Rand leicht anzuheben. Es tritt dann das keilförmige Zwischenstück 9 unter der Kraft der Schraubendruckfeder 93 in den Zwischenraum zwischen Widerlager 5 und Tischplatte 7 (Quersteg 52 und Platte 61) wieder ein, und zwar genau so weit, wie es der durch das Anheben der Tischplatte geschaffene Zwischenraum zuläßt. Die Kraft der Schraubendruckfeder 93 ist nicht ausreichend, um die Hohlträger 6 mit der Tischplatte 7 über die durch Anheben gewählte Stellung hinaus in die horizontale Lage zu bringen, während andererseits zwischen den Flächen des keilförmigen Zwischenstückes und dem Quersteg 52 des Widerlagers 5 bzw. der Platte 61 des Hohlträgers 6 eine ausreichend hohe Reibung besteht, um zu verhindern, daß durch das Gewicht der Tischplatte 7 das keilförmige Zwischenstück 9 nach außen gedrückt wird. Es ist daher möglich, die Tischplatte ohne zusätzliche Maßnahmen durch einfaches Anheben in jede gewünschte Stellung zu bringen und darin zu arretieren. Ebenso leicht läßt sich der vordere Rand der Tischplatte durch Herausziehen der Zwischenstücke 9 aus dem Bereich zwischen dem Quersteg 52 des Widerlagers 5 und der Tischplatte 7 um das gewünschte Maß absenken.It is easy to see that the table top in the drawn-out position in FIG. 2 of the hollow support 6 is supported via the intermediate piece 9 on the crossbar 52 of the abutment 5 and is thus held securely in the horizontal position. On the other hand, if the intermediate piece 9 is pulled out of the area between the table top 7 and the abutment 5 in the opening direction of its wedge angle by pulling the button 94, the hollow support 6 with the table top 7 can pivot down into the position shown in broken lines in FIG. 2 in which position the hollow support 6 with its plate 61 rests directly against the stop surface formed by the crosspiece 52 of the abutment 5. In this case, the inclination of the table top is approximately 10%. If the table top 7 is to be brought back into a higher position, it is sufficient to raise the table top 7 slightly at its front edge. It then enters the wedge-shaped intermediate piece 9 under the force of the helical compression spring 93 into the space between the abutment 5 and the table top 7 (cross piece 52 and plate 61), to the extent that the space created by lifting the table top allows. The force of the helical compression spring 93 is not sufficient to bring the hollow supports 6 with the table top 7 into the horizontal position beyond the position selected by lifting, while on the other hand between the surfaces of the wedge-shaped intermediate piece and the Transverse web 52 of the abutment 5 or the plate 61 of the hollow support 6 is sufficiently high to prevent the wedge-shaped intermediate piece 9 from being pressed outwards by the weight of the table top 7. It is therefore possible to bring the table top into any desired position by simply lifting and locking it without additional measures. The front edge of the table top can be lowered just as easily by pulling out the intermediate pieces 9 from the area between the crosspiece 52 of the abutment 5 and the table top 7 by the desired amount.

Der in den Figuren 4 bis 7 dargestellte Tisch weist zwei Seitenteile 101, 102 auf, die durch zwei Längsträger 103, 104 zu einem stabilen Gestell miteinander verbunden sind, zwischen dessen Seitenteilen, 101, 102 eine Tischplatte 105 angeordnet ist. Die Tischplatte 105 schließt mit ihrem hinteren Rand an den einen Längsträger 103 an und ist mit diesem Längsträger in nicht näher dargestellter Weise gelenkig verbunden. Diese gelenkige Verbindung kann mittels Scharnieren hergestellt sein aber auch lediglich in einer einfachen Auflage des hinteren Randes der Tischplatte 105 auf einer am Längsträger 103 angebrachten Anlagefläche bestehen. Der andere Längsträger 104 befindet sich im vorderen Bereich der Tischplatte 105 und ist unterhalb der Tischplatte angeordnet, so daß er in Fig. 4 nicht sichtbar ist.The table shown in FIGS. 4 to 7 has two side parts 101, 102 which are connected to one another by two longitudinal members 103, 104 to form a stable frame, between the side parts 101, 102 of which a table top 105 is arranged. The table top 105 connects with its rear edge to the one longitudinal beam 103 and is connected to this longitudinal beam in an articulated manner. This articulated connection can be made by means of hinges but can also consist only in a simple support of the rear edge of the table top 105 on a contact surface attached to the longitudinal beam 103. The other longitudinal beam 104 is located in the front area of the table top 105 and is arranged below the table top, so that it is not visible in FIG. 4.

Wie insbesondere aus Fig. 7 ersichtlich, ist der am vorderen Rand der Tischplatte 105 angeordnete Träger 104 als ein nach oben offenes Hohlprofil ausgebildet, in dem zwei zu einer Verstellvorrichtung gehörende Blöcke 106 verschiebbar gelagert sind. Zur Lagerung dieser Blöcke 106 dienen jeweils zwei Winkelschienen 141, 142, die an den Seitenwänden des hohlen Trägers 104 derart befestigt sind, daß ihre von den Seitenwänden abstehenden Stege 143, 144 sich in einer zur Achse des Trägers 104 parallelen Ebene gegenüberstehen. Diese Stege greifen in entsprechende Schlitze 161, 162 an den Seitenflächen der Blöcke 106 ein, so daß diese Stege Gleitschienen für die Blöcke bilden. Die beiden Blöcke 106 sind durch eine Schubstange 107 miteinander verbunden, die im Bereich ihrer Mitte einen radial abstehenden Handgriff 170 aufweist, der einen Schlitz 145 durchdringt, der in der dem Rand der Tischplatte 105 zugewandten Seitenwand des Trägers 104 angebracht ist. Dieser Schlitz 145 weist drei im Abstand voneinander angeordnete Aussparungen 146 auf, in die der von der Schubstange 107 radial abstehende Handgriff 171 durch Verschwenken der Schubstange einführbar ist. Diese drei Aussparungen 146 definieren diskrete Raststellungen für die mittels der Schubstange 107 längs des Trägers 104 verschiebbaren Blöcke 106.As can be seen in particular from FIG. 7, the carrier 104 arranged at the front edge of the table top 105 is designed as an upwardly open hollow profile in which two blocks 106 belonging to an adjusting device are slidably mounted. Two angle rails 141, 142, which are on the side walls of the hollow support, are used to support these blocks 106 104 are fastened in such a way that their webs 143, 144 projecting from the side walls face each other in a plane parallel to the axis of the carrier 104. These webs engage in corresponding slots 161, 162 on the side surfaces of the blocks 106, so that these webs form slide rails for the blocks. The two blocks 106 are connected to one another by a push rod 107, which has a radially protruding handle 170 in the area of its center, which penetrates a slot 145, which is provided in the side wall of the carrier 104 facing the edge of the table top 105. This slot 145 has three spaced-apart recesses 146, into which the handle 171 projecting radially from the push rod 107 can be inserted by pivoting the push rod. These three cutouts 146 define discrete locking positions for the blocks 106 which can be displaced along the carrier 104 by means of the push rod 107.

Die Blöcke 106 bilden keilförmige Zwischenstücke, mit denen an der Unterseite der Tischplatte 105 befestigte Keilstücke 108 zusammenwirken. Diese Keilstücke weisen eine ebene Fläche 181 auf, mit der sie an der Unterseite der Tischplatte 105 anliegen, und eine zur Tischfläche geneigte Schrägfläche 182, die bei dem dargestellten Ausführungsbeispiel von einer Kreiszylinderfläche gebildet wird, die eine zu der ebenen Anlagefläche 181 schräge Achse besitzt. Diese Schrägfläche 182 verläuft parallel zu einer zylindrischen Keilfläche 163, die von einer entsprechenden Aussparung des Blockes 106 gebildet wird. Wie insbesondere aus den Figuren 5 und 6 ersichtlich ist die Anordnung so getroffen, daß die Schrägflächen 182, die sich an den an der Unterseite der Tischfläche 105 angebrachten Keilstücken 108 befinden, an den Keilflächen 163 der Blöcke 106 anliegen. Diese Blöcke 106 bilden demgemäß keilförmige Zwischenstücke, die mit einer ersten Keilfläche 164 am Boden des Trägers 104 bzw. mit den dazu parallelen Nuten 161, 162 auf den im Träger 104 befestigten Winkelschienen 141, 142 in Verschieberichtung der Blöcke 106 geführt sind, während an den zweiten Keilflächen 163 die Tischplatte 105 unter Zwischenschaltung der Keilstücke 108 zur Anlage kommt. Demgemäß stützt sich die Tischplatte 105 unter Zwischenschaltung der Keilstücke 108 und der Zwischenstücke 106 an dem Träger 104 ab, wobei die Stellung der Zwischenstücke 106 den Abstand der Tischplatte 105 von dem Träger 104 bestimmt.The blocks 106 form wedge-shaped intermediate pieces with which wedge pieces 108 fastened on the underside of the table top 105 interact. These wedge pieces have a flat surface 181, with which they rest on the underside of the table top 105, and an inclined surface 182 inclined to the table surface, which in the exemplary embodiment shown is formed by a circular cylindrical surface which has an axis which is inclined to the flat contact surface 181. This inclined surface 182 runs parallel to a cylindrical wedge surface 163, which is formed by a corresponding recess in the block 106. As can be seen in particular from FIGS. 5 and 6, the arrangement is such that the inclined surfaces 182, which are located on the wedge pieces 108 attached to the underside of the table surface 105, bear against the wedge surfaces 163 of the blocks 106. Accordingly, these blocks 106 form wedge-shaped intermediate pieces which are connected to a first wedge surface 164 on the bottom of the carrier 104 or with the parallel grooves 161, 162 on the angle rails 141, 142 fastened in the carrier 104 are guided in the direction of displacement of the blocks 106, while on the second wedge surfaces 163 the tabletop 105 with the interposition of the wedge pieces 108 comes to the plant. Accordingly, the table top 105 is supported on the carrier 104 with the interposition of the wedge pieces 108 and the intermediate pieces 106, the position of the intermediate pieces 106 determining the distance of the table top 105 from the carrier 104.

Wie Fig. 5 zeigt, können die Zwischenstücke 106 in der Zeichnung soweit nach rechts verschoben werden, daß die Tischplatte 105 unmittelbar an der Oberseite des Trägers 104 zur Anlage kommt. Aus dieser Stellung wird die Tischplatte 105 angehoben, wenn die von den Blöcken 106 gebildeten Zwischenstücke mittels des an der Schubstange 107 angebrachten Handgriffes 171 nach links bewegt werden. Bevor die in Fig. 6 dargestellte, oberste Stellung erreicht wird, passiert der Handgriff 171 eine mittlere Aussparung 146 am Rand des Schlitzes 145, durch die eine mittlere Raststellung für die Zwischenstücke 106 und damit auch für die Tischplatte 105 definiert wird. Es versteht sich, daß auch eine größere Zahl solcher Raststellungen vorgesehen werden könnte. Auch hier kann wieder nach Anheben der Tischplatte am vorderen Rand die Verstellung der Zwischenstücke durch Betätigen Schubstange 107 am Handgriff 171 ohne großen Kraftaufwand erfolgen.As shown in FIG. 5, the intermediate pieces 106 can be shifted to the right in the drawing so that the table top 105 comes to rest directly on the upper side of the carrier 104. From this position, the table top 105 is raised when the intermediate pieces formed by the blocks 106 are moved to the left by means of the handle 171 attached to the push rod 107. Before the uppermost position shown in FIG. 6 is reached, the handle 171 passes through a central recess 146 at the edge of the slot 145, through which a central locking position for the intermediate pieces 106 and thus also for the table top 105 is defined. It goes without saying that a larger number of such locking positions could also be provided. Here too, after lifting the table top at the front edge, the intermediate pieces can be adjusted by actuating push rod 107 on handle 171 without great effort.

Es versteht sich, daß die Erfindung nicht auf die dargestellten Ausführungsbeispiele beschränkt ist, sondern Abweichungen davon möglich sind, ohne den Rahmen der Erfindung zu verlassen. So könnten beispielsweise auch im Bereich des vorderen Randes der Tischplatte angeordnete Zwischenstücke senkrecht zu diesem vorderen Rand verschiebbar sein, und es wäre auch denkbar, keilförmige Zwischenstücke an mindestens zwei parallelen Rändern der Tischplatte anzuordnen und derart miteinander zu verbinden, daß die gleichzeitige Verstellung aller Zwischenstücke ein paralleles Anheben oder Absenken der Tischplatte ermöglicht. Weiterhin brauchen die Keilflächen des Zwischenstückes und des damit zusammenwirkenden Keilstückes nicht unbedingt in der Verschieberichtung geradlinig zu sein, sondern könnten eine feine Stufung aufweisen, die eine ein ungewolltes Verschieben der Zwischenstücke verhindernde Rastung bildet. Weiterhin können die verstellbaren Zwischenstücke und/oder die zugeordneten Widerlager nicht nur an Längsträgern des Tischgestelles, sondern auch an dessen Seitenteilen angebracht sein. Demgemäß ist für den Fachmann eine Vielzahl von Modifikationen erkennbar, die alle in dem durch die Ansprüche gesteckten Rahmen der Erfindung liegen.It goes without saying that the invention is not limited to the exemplary embodiments shown, but deviations are possible without leaving the scope of the invention. For example, in the area of the front edge Intermediate table top arranged to be displaceable perpendicularly to this front edge, and it would also be conceivable to arrange wedge-shaped intermediate pieces on at least two parallel edges of the table top and to connect them to one another such that the simultaneous adjustment of all intermediate pieces enables the table top to be raised or lowered in parallel. Furthermore, the wedge surfaces of the intermediate piece and of the wedge piece interacting therewith do not necessarily have to be rectilinear in the direction of displacement, but could have a fine gradation which forms a detent preventing an undesired displacement of the intermediate pieces. Furthermore, the adjustable intermediate pieces and / or the associated abutments can be attached not only to the side members of the table frame, but also to the side parts thereof. Accordingly, a variety of modifications will be apparent to those skilled in the art, all of which are within the scope of the invention as defined by the claims.

Claims (17)

  1. Table with a table frame, a table top which is mounted on the table frame in a movable fashion and a device for adjusting the height of the table top with respect to the table frame at at least one of the table top edges, whereby at least one abutment is securely arranged beneath the table top at the table frame
    characterized in that,
    the abutment (5, 104) cooperates with a wedge shaped adapter (9, 106) which can be displaced, in the direction of the opening of its wedge angle, largely parallel to the table plate (7, 105) to be positioned more or less deeply between the abutment (5, 104) and the table top (7, 105) so that the position of the adapter (9, 106) determines the separation between the table top and the abutment and thereby also the position of the table top relative to the table frame.
  2. Table according to claim 1 characterized in that the wedge shaped adapter (9, 106) is arranged at the end of a slide rod (91, 107).
  3. Table according to claim 2 characterized in that the slide rod (91) is loaded with a spring (93) which urges the adapter (9) into the region between the table top (7) and the abutment (5).
  4. Table according to one of the previous claims characterized in that the wedge shaped adapter (9, 106) exhibits a first wedge surface which is parallel to its sliding direction and a second wedge surface (163) which is arranged obliquely thereto, and the second wedge surface, in at least one defined position of the table top, lies adjacent to an oblique surface (182) which is parallel thereto.
  5. Table according to claim 4 characterized in that the second wedge surface (163) and the oblique surface (182) adjacent thereto are configured as cylinder surfaces arranged to generate surfaces or lines which are parallel to the legs of the wedge.
  6. Table according to claim 5 characterized in that the second wedge surface (163) and the diagonal surface (182) adjacent thereto are configured as circular cylindrical surfaces with largely equal radius.
  7. Table according to one of the preceeding claims characterized in that the table top (7, 105), in its lowest position, is directly seated on the abutment (5, 104).
  8. Table according to one of the preceeding claims characterized in that the table top (7, 105), in the vicinity of its rear edge, is pivotably mounted with its tilt being changeable through an adjustment of its height in the vicinity of the front edge.
  9. Table according to claim 8 characterized in that the abutment (5) is arranged near the rear edge of the table top (79) and exhibits a tilted surface (52) on which the table top (7), in its lowest position, abuts.
  10. Table according to the claims 2 and 9 characterized in that the slide rod (91) is mounted at the underside of the table top (7) and extends out to its front edge.
  11. Table according to claim 10 characterized in that the slide rod (91) is guided in a bearing block (92) arranged at the underside of the table top, exhibits a handle (94), at the end opposite to the adapter (9), and is surrounded by a helical compression spring (93) which abuts, on one side, at the bearing block (92) and, on the other side, at the adapter (9).
  12. Table according to one of the claims 9 through 11 characterized in that, at least one hollow support (6), extending perpendicular to the back edge of the table, is arranged on the underside of the table top (7) with the abutment (5) projecting into the back end of the hollow support (6) and the slide rod (91) with the adapter (9), is born within the hollow support (6) to be movable in its lengthwise direction.
  13. Table according to claim 12 characterized in that the hollow support (6) is hinged to the abutment (5) projecting into its rear end.
  14. Table according to one of the claims 1 through 7 characterized in that the table frame exhibits a support (104) which extends parallel to an edge of the table top (105) whose height is adjustable, and at least one wedge shaped adapter (106) is arranged in the longitudinal direction of the support (104) in a slideable fashion and a wedge section (108), cooperating with and complementary to the adapter (106) is arranged at the underside of the table top (105), the wedge section having a, tilted with respect to the surface of the table, diagonal surface (182) on which the adapter (106), with its second wedge surface (163) is seated.
  15. Table according to claim 14 characterized in that, in the vicinity of a heightwise adjustable edge of the table top (105), two adapters (106), each of which cooperating with a wedge section (108), are arranged at a separation from each other, the adapters being connected to each other by means of a slide rod (107) which extends parallel to the edge of the table top (105).
  16. Table according to one of the previous claims characterized in that a plurality of discrete stop positions are provided for the wedge shaped adapter (106).
  17. Table according to claims 15 and 16 characterized in that the slide rod (107) connecting the adapters (106) is provided with a radially extending handle (171) and the support (104) of the table frame, on which the adapters (106) are arranged in a slideable fashion, exhibits a plurality of recesses (146) which are located at separations from another and which define the stop positions of the wedge shaped adapters (106) and in which the handle (171) can be introduced.
EP89120758A 1988-11-16 1989-11-09 Table with an adjustable top Expired - Lifetime EP0369319B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89120758T ATE95392T1 (en) 1988-11-16 1989-11-09 TABLE WITH ADJUSTABLE TABLETOP.

Applications Claiming Priority (2)

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DE3838763 1988-11-16
DE3838763A DE3838763A1 (en) 1988-11-16 1988-11-16 TABLE WITH ADJUSTABLE TABLE TOP

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EP0369319A2 EP0369319A2 (en) 1990-05-23
EP0369319A3 EP0369319A3 (en) 1991-04-03
EP0369319B1 true EP0369319B1 (en) 1993-10-06

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US (1) US5036776A (en)
EP (1) EP0369319B1 (en)
AT (1) ATE95392T1 (en)
CA (1) CA2003008A1 (en)
DE (2) DE3838763A1 (en)
ZA (1) ZA898673B (en)

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CA2003008A1 (en) 1990-05-16
ATE95392T1 (en) 1993-10-15
ZA898673B (en) 1990-08-29
DE58905834D1 (en) 1993-11-11
DE3838763A1 (en) 1990-05-23
EP0369319A3 (en) 1991-04-03
US5036776A (en) 1991-08-06
DE3838763C2 (en) 1991-06-20
EP0369319A2 (en) 1990-05-23

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