WO2008028306A2

WO2008028306A2 - Height-adjustable table

Info

Publication number: WO2008028306A2
Application number: PCT/CH2007/000417
Authority: WO
Inventors: Herbert Walter
Original assignee: Visplay International Ag
Priority date: 2006-09-08
Filing date: 2007-08-23
Publication date: 2008-03-13
Also published as: DE202006013998U1; WO2008028306A3

Abstract

The height-adjustable table has a table top (1) which is supported by two legs (2) and has an upper side (11) as working surface and a lower side (12), wherein each leg (2) has two struts (20). Each strut (20) has an upper end and a lower end, wherein the latter is designed to be placed on the floor. The setting of the height of the table top (1) is based on the adjustment of the angle adopted between the legs (2) and the table top (1). The upper ends of the two struts (20) of each leg (2) are articulated on a first, position-variable spindle (A1) which can be displaced in a guide (40) running longitudinally below the table top (1). A cross piece (3) is articulated, firstly in a second, fixed spindle (A2) below the table top (1) and secondly in a third, position-variable spindle (A3) together with the two struts (20) of each leg (2). An adjustment member (5) is provided which serves to hold the first spindle (A1) in position in the set state. The first spindle (A1) is connected to the adjustment member (5) which serves to displace the first spindle (A1) in the guide (40) during the setting of the height. The adjustment member (5) is designed as a clamping device or detent element in order to hold the first spindle (A1) in position along the guide (40) in the set state.

Description

Height-adjustable table

Field of application of the invention

The present invention relates to a height-adjustable table with a table top supporting table frame on which the legs are arranged. The height adjustment is based on the adjustment of the angle between the legs and the table top.

PRIOR ART Height-adjustable tables are known in many designs. Such tables have the advantage of being adapted to the needs of the individual user working thereon or to the particular use - e.g. Presentation of goods at different heights - can be adapted quickly and again changeable. The basic requirements for height-adjustable tables are that on the one hand they represent a stable piece of furniture in each set state and on the other hand they are as simple as possible and can be adjusted quickly. Furthermore, such tables must not only fulfill functional aspects, but also meet aesthetic demands.

In a first type of table, such as known from EP 1 541 056 A2, the height-adjustable table has a table top which can be infinitely positioned between a minimum extension height and a maximum extension height. In the lateral outer areas of the table, two feet are attached, each consisting of two legs and a transverse beam spanning them. From each cross member, a guide and a lift assembly extend to a bridge member which carries the tabletop. Both bridge parts on the table can be moved and fixed along its frame from a maximum external position to an innermost position. The height adjustment is thus based on a constant adjustment of the legs, against which the frame supporting the table top can be fixed in a selectable height. In a second type of table, as disclosed for example in DE 296 17 926 U1, the height adjustment of the table top is based on telescopic in the extension length adjustable table legs. Here, an inner tube of a fixed outer tube according to the desired setting axially extended. In a third type of table, shown for example in NL 1023407 C, the height adjustment of the table top is realized by the adjustment of the angle between the legs and the table top.

Object of the invention

In relation to the known prior art, according to the third type of table with the height adjustment of the table top by the adjustment of the occupied between the legs and the table top angle, the invention is based Aufgewäbe to propose an improved mechanism that simplifies changing the height adjustment It guarantees a very solid table stand with high load capacity and can be efficiently mass produced. Another object is to design the mechanism so that the table can be folded in the manner of a folding table to virtually a zero height and while the lowest possible stack height of superpositioned tables is achieved. Yet another task is to design the mechanism so that the table can not only be adjusted horizontally in height, but at the same time the table top can also be tilted.

Overview of the invention

The height-adjustable table has a table top supported by two legs, which has a top surface as a work surface and a bottom surface, with each leg having two struts. Each strut has an upper end and a lower end, the latter being intended for placement on the ground. The height adjustment of the table top is based on the adjustment of the angle between the legs and the table top. The upper ends of the two struts of each leg are articulated on a first, movable axis, which is displaceable in a guide running longitudinally below the table top. A traverse is hinged on the one hand in a second fixed axis below the table top and on the other hand in a third movable axis, together with the two struts of each leg. An actuator is provided, which serves to keep the first axis in the set state in position. Hereinafter, specific embodiments of the invention are defined: The first axis is connected to the actuator, which serves to move the first axis in the height adjustment in the guide. The actuator is designed as a clamping device or grid to hold the first axis in the set state in position along the guide. Alternatively, the actuator may be designed as a threaded spindle, rack, chain hoist, cable, pneumatic drive or hydraulic drive. The guide is formed by longitudinal slots, which are arranged in the wall of a carrier profile, on which the tabletop underside touches. On the first axis and between the upper ends of two legs forming a leg, there is a first axle bolt which is fastened by means of first bearing elements. The carrier profile is a tube with preferably rectangular cross-section or is designed as an upwardly open U-profile. The longitudinal slots are arranged in two opposite side walls of the carrier profile, on which the tabletop underside touches.

On the first axis and between the upper ends of two legs forming a leg, there is a first axle bolt which is fastened by means of first bearing elements. In an advantageous embodiment, a transverse threaded bore runs through the first axle bolt and engages with the actuating member designed as a threaded spindle, the actuator being arranged in the carrier profile. The upper ends of two leg-yielding struts are formed by a lug connecting the two struts upwardly, from which, in continuation of each strut, a web extends with an axle hole therein for engagement of the first bearing elements. The two webs belonging to one leg are attached to the side walls of the carrier profile. The carrier profile is provided with upper bends and spars, which extend horizontally and serve the support of the table top underside. The bends and spars are preferably bolted to the underside of the table top. The lower ends of the struts of the legs are provided with bottom elements which adapt to different inclinations of the struts attached thereto.

For each of the two legs and the respectively associated first axis with the first axle pin lying thereon, a separate actuator is provided. Between two actuators a clutch is arranged, which causes in the engaged state upon actuation of the actuators simultaneous entrainment of the other actuator and thus both first axle pin adjusted in the same direction, resulting in an adequate same change in the inclination of the two legs and thus the positioning of the table top. In the disengaged state, however, moves only one actuated actuator and thus adjusted only by this projected through the first axle, resulting in an adequate change in the inclination of the associated leg and thus an adjustment of the inclination of the table top.

Each actuator has at the opposite end of the clutch an actuating head, the end face on the carrier profile, preferably in a respective end wall of the carrier profile, is arranged. The actuating head has an engagement for attaching a tool in order to set the actuator in rotation. The coupling consists of a driver and a slider whose actuating handle protrudes from the carrier profile. At the driver on the one hand, a first engagement contour and on the other hand, a second engagement contour available. Each of the two actuators leading to the driver has at the end facing the driver a gripping element, which is intended for positive engagement with the respectively adjacent engagement contour. The gripping element of one of the actuators remains independent of the position of the coupling in the relevant engagement contour, while the gripping element of the other actuator in the disengaged state with the relevant engagement contour, which preferably has the shape of a dog clutch, is disengaged.

The traverse is in principle of H-shaped form with two side legs and a middle leg connecting them. At the upper end of each side leg there is a second axle hole to form the second axle with a second axle pin and second bearing elements that fix it. At the lower end of each side leg there is a first axle hole to form the third axle with an eye present on each strut, a third axle bolt and fixing third bearing elements. To limit the minimum height position of the table top stops are available that block the further feed of the first axle. In case of override or absence of the attacks, the legs can swing up to a zero position of the table top in the manner of a folding table. To limit the maximum height position of the table top additional stops may be present, which block the further feed of the first axle. At the table an indicator is arranged, on which the position of the table top in relation to the horizontal and / or its height position can be read off. As an indicator, a spirit level element and / or a mass scale are preferably used for detecting the position of the two first axes within the guide.

Brief description of the attached drawings It shows:

FIG. 1A: a height-adjustable table according to the invention, in the maximum height setting, in a perspective top view from the front; Figure 1 B: the table according to Figure 1A, in longitudinal front view; Figure 1 C: the table according to Figure 1A, in narrow-sided front view; Figure 1 D: the table according to Figure 1 A, in a perspective bottom view from the front; Figure 1 E: the table according to Figure 1A, in bottom view; Figure 1 F: the illustration according to Figure 1A, without table top; FIG. 1G: the representation according to FIG. 1F, in plan view;

FIG. 2A: the illustration according to FIG. 1A, in a minimal height setting, in a perspective top view from the front;

FIG. 2B: the representation according to FIG. 2A, in a longitudinal front view;

FIG. 2C: the representation according to FIG. 2A, in a narrow-sided front view;

FIG. 2D: the representation according to FIG. 2A, in perspective bottom view from the front;

FIG. 2E: the representation according to FIG. 2A, in a bottom view;

FIG. 2F: the representation according to FIG. 2A, without table top;

FIG. 2G: the representation according to FIG. 2F, in plan view; Figure 3A: the illustration according to Figure 1A ₁ with the table completely folded, in zero position, in a perspective plan view from the front; FIG. 3B: the illustration according to FIG. 3A, in a longitudinal front view; FIG. 3C: the illustration according to FIG. 3A, in a narrow-sided front view; FIG. 3D: the representation according to FIG. 3A, in perspective bottom view from the front;

FIG. 3E: the illustration according to FIG. 3A, in a bottom view; FIG. 3F: the illustration according to FIG. 3A, without table top; FIG. 3G: the representation according to FIG. 3F, in plan view;

FIG. 4A: the illustration according to FIG. 1A, with inclined table top, on the one hand in minimal height adjustment and on the other hand near the maximum height adjustment, in a perspective plan view from the front;

FIG. 4B: the illustration according to FIG. 4A, in a longitudinal front view; FIG. 4C: the illustration according to FIG. 4A, in perspective bottom view from the front;

FIG. 4D: the representation according to FIG. 4A, without table top;

Figure 4E: the representation according to Figure 4C, without table top;

Figure 5: the table according to Figure 1A, in an exploded view;

FIG. 6A: a carrier profile from FIG. 5, in a perspective plan view;

FIG. 6B: the carrier profile according to FIG. 6A, in a perspective bottom view;

Figure 7: both legs of Figure 5, in perspective view;

FIG. 8 shows a traverse from FIG. 5, in perspective view;

FIG. 9A: an actuator from FIG. 5, with mounted bearing elements and actuating head, in perspective view;

FIG. 9B: the enlarged detail X1 from FIG. 9A;

FIG. 9C shows an actuating head from FIG. 5, in a perspective front view; FIG. 9D: the actuating head according to FIG. 9C, in a perspective rear view; Figure 10A: a coupling of Figure 5, assembled, in a perspective front view;

FIG. 10B: the illustration according to FIG. 10A, in perspective bottom view;

Figure 1OC: a driver of the coupling of Figure 5, in front perspective view;

FIG. 10D: a slide of the coupling from FIG. 5, in a perspective bottom view;

FIG. 11A shows the carrier profile according to FIG. 6A, with the first axle pin inserted and an actuating head, in a perspective plan view;

FIG. 11B: an actuator with coupling, first and second axle bolts, spindle connection, actuating head, associated bearing elements and an outer beam from FIG. 1G, in a perspective top view;

FIG. 11C: the construction according to FIG. 1G, without legs and traverses, in a perspective view from above;

Figure 11 D: the enlarged detail X2 of Figure 11 C, without the front bearing elements on the first axle;

FIG. 11E: the enlarged detail X2 of FIG. 11C, with leg and traverse;

Figure 12A: the structure according to Figure 11 C, in minimal height adjustment, without the second axle, in a perspective bottom view; FIG. 12B: the enlarged detail X3 from FIG. 12A;

Figure 13A: both actuators, coupling, actuator heads, bearing elements and spindle connections of Figure 5, assembled, disengaged

Condition, in perspective front view; FIG. 13B: the enlarged detail X4 from FIG. 13A;

FIG. 13C shows the illustration according to FIG. 13B, with a claw contour on the driver of the coupling; and FIG. 13D: the illustration according to FIG. 13C, in the engaged state.

embodiment

Reference to the accompanying drawings, the detailed description of an embodiment of the inventive height-adjusting bar table.

The following definition applies to the entire further description. If reference numerals are included in a figure for the purpose of clarity of drawing, but are not explained in the directly associated description text, reference is made to their mention in the preceding or following description of the figures. In the interest of clarity, the repeated designation of components in other figures is usually dispensed with, as far as the drawing clearly shows that they are "recurring" components.

FIGS. 1A to 1G and 5 to 8

The height-adjustable table is in this sequence of figures in the maximum height adjustment h _max and is composed essentially of a base and resting on the table top 1 together. The maximum height adjustment h _max will be selected, for example, if goods are to be presented on the usual height of work tables. The undercarriage consists of two legs 2 and hinged thereto trusses 3 and the support section 4, in which two arranged in series actuators 5 and a clutch 6 positioned therebetween are housed. The here elongated, rectangular table top 1 has the top 11 as a work surface and the bottom 12. A leg 2 has two bock-shaped mutually inclined struts 20, which are spread apart from each other below and provided with bottom elements 29. Above, the struts 20 are approximated to each other and are firmly connected together by a tab 22 inserted therebetween. At approximately half the height of each strut 20 extends an eye 21, wherein the eyes 21 are directed by two struts 20 forming a leg 2 to each other.

The traverse 3 is in principle H-shaped and has two side legs 30 and the middle leg 31. Each side leg 30 has at the lower end a first axle hole 32 and at the upper end a second axle hole 33. The carrier profile 4 is substantially of a rectangular, open-topped pan formed. From the bottom 41, the two mutually parallel side walls 42 rise, in each of which two in-line longitudinal slots 40 as a guide tion are provided, wherein the longitudinal slots 40 in a side wall 42 to the longitudinal slots 40 in the opposite side wall 42 are congruent to each other. At the outer ends of the carrier profile 4 is completed by an end wall 43.

For support and attachment of the table top underside 12, the carrier profile 4 has outgoing upper bends 44 from the side walls 42 and is provided with a plurality of bars 46 which extend transversely from the carrier profile 4. Advantageously located at the end of the carrier profile 4, a spar 46 and according to the intended length of the table top 1 and the designed load, more interposed beams 46 are provided. The spars 46 extend in pairs and mutually aligned from the two side walls 42. In a hole 430 in the two end walls 43, each of which merges into a pair of outer spars 46, an actuating head 50 is used with the externally accessible engagement contour 500. Near the mutually facing, quasi-inner ends of the longitudinal slots 40 protrude through holes 410 in the bottom 41 stops 91 out. Accessible to the user further extends the handle 68 of the clutch 6 through the bottom 41 through a slot 411 to the outside. The coupling 6 comprises an approximately cylindrical driver 60 and an angle 66 designed as a slider.

The webs 23 of a leg 2 comprise the two side walls 42 of the carrier profile 4. Through the axle holes 24 in the webs 23 protrude the first bearing elements 54 which each slidably hang in one of the longitudinal slots 40 opposite each other and between them the first pivot pin S1, so that in each case a first spatially variable axis A1 is formed. Corresponding to the maximum height adjustment h _{max of} the table top 1, the first axes A1 are currently located at the position P _max , which lies in principle at the outer ends of the longitudinal slots 40. The legs 2 are the most approximate to the vertical position. The first pivot pin A1 extends transversely across the channel-shaped cavity in the carrier profile 4. The second stationary axis A2 is formed by the second bearing elements 53 engaging in the holes 420 in the two side walls 42 of the carrier profile 4, which each have a second Projecting through the axle hole 33 in the cross member 3 and a second axle pin S2 summarize, which can extend as a piece across the cavity in the support section 4 or is present for each hole 420 as a piece. Regardless of the height setting of the table, the second axis A2 is stationary. The third axis A3 is movable in radius about the second axis A2, depending on the height setting of the table. Third bearing elements 36 each engage through a first axle hole 32 in the crossmember 3 and fix a third axle pin S3 which is in the eye 21 on each strut 20.

The trained as threaded spindles two actuators 5 are arranged on the bottom 41 of the support section 4. The pointing to the center of the table ends of the actuators 5 engage in the clutch 6, while the opposite ends of the actuators 5 are each connected by a spindle connection 51 and fourth bearing elements 52 to the actuating head 50. Each actuator 5 passes through the associated first axle pin S1.

FIGS. 2A to 2G

After actuation of the actuators 5, the table is in the minimum height adjustment hmin, the table top 1 is lowered to near the bottom and the legs 2 are close to their most extreme inclination. The minimum height adjustment h _min will be selected, for example, if goods are to be presented at the height level of floor platforms. Of the actuators 5, the first axes A1 have been pushed along the longitudinal slots 40 in the position P _m j _n , which is located near the inner ends of the longitudinal slots 40. The momentarily acting stops 91 have blocked the further feed of the first axle pin S1. The two trusses 3 are pivoted by the adjustment of the legs 2 in each case about the fixed second axis A2 in the direction of the horizontal, so that each associated third spatially displaceable axis A3 has approached the table top 12 and at the same time moved in the direction of the center of the table. FIGS. 3A to 3G

To achieve the zero position ho, in which the table is completely folded in the manner of a folding table, the stops 91 were first to be solved. After actuation of the actuators 5 via the previous minimum height adjustment h _m j _n, the legs 2 are in their most extreme skew and the table plate 1 is lowered almost to the floor. Of the actuators 5, the first axes A1 have been further pushed along the longitudinal slots 40 to the position Po, which lies at the inner ends of the longitudinal slots 40. The two trusses 3 are further pivoted by the re-adjustment of the legs 2 to the fixed second axis A2 and are now almost in the horizontal. The respectively associated third movable axis A3 has approximated the farthest of the tabletop bottom 12 and at the same time the center of the table. The zero setting ho is particularly advantageous for saving space during transport and storage of the tables.

FIGS. 4A to 4E

For special applications, the table can also be adjusted in an inclined position within a wide range in addition to the selectable height adjustment. If the table top 1 is not horizontal, the position of the legs 2, the traverse 3, the first axis A1 and the third axis A3 on one side of the table is different from the situation on the other side of the table. In the example shown, the left side of the table has been brought to the minimum height setting hmin, while the right side of the table has the height setting hi, which is close to the maximum height setting h _max . This results in that the table top 1 is inclined almost at the maximum angle of attack. The left first axis A1 is in the position P _m j _n at the adjacent stop 91, the right first axis A1, however, is in the position Pi the outer end of the associated longitudinal slots 40 approximated. The respective leg 2 and the traverse 3 articulated thereon are in an adequate angular position, which, however, is superposed by the inclined position of the table and therefore does not correspond to the angular position of leg 2 and traverse 3, which would occur with the same height adjustment with horizontal table top 1. The inclination of the table top 1 has It is achieved by the separate on both sides of the table actuators 5 are operated differently advanced. The inclination of the table top 1 - eg with the height adjustment h _m j _n / hi - will be used, for example, to present on an inclined table top 11 goods, such as bags or unfolded cloths.

FIGS. 9A to 9D

A complete actuator 5, preferably in the form of a threaded spindle, further comprises a spindle connection 51, which serves to connect the actuating head 50 with the interposition of fourth bearing elements 52. The actuating head 50 initially has a disk-shaped plate 501, which is intended for insertion into the hole 430 in the end wall 43 of the carrier profile 4. Centrally located in the plate 501 is an engagement contour 500, e.g. is designed as a hexagon socket to insert from the outside a complementary tool with which the actuator 5 can be set in rotation, causing an adjustment on the table. On the back of the plate extends a cylindrical shaft 502, which is connected by means of the spindle connection 51 with one end of the threaded spindle 5. The bearing elements 52, which are used for installation in the end wall 43, are fitted onto the shaft 502 between the plate 501 and the spindle connection 51. At the free end opposite the spindle connection 51, the threaded spindle 5 has a gripping element 55, e.g. a transversely inserted pin, for docking with the driver 60 of the coupling. 6

FIGS. 10A to 10D. FIGS. 13A and 13B The driver 60 is in principle a cylindrical body with first axial hole 61 introduced on the front circular surface and a first engagement contour 62 passing through it transversely, here as a continuous slot. In the same way, a second axial hole 64 and a second engagement contour 65 are located on the rear circular surface. The driver 60 moves around a radial groove 63 closer to the rear circular surface. The slider 66 is an elbow with a circular fork opening 67 in the upward-facing portion. From the bending region between the upwardly facing and horizontal portion of a downwardly directed guide nose 69 is bent out. From the horizontal Section of the slider 66 extends a downwardly directed handle 68, which projects through the slot 411 together with the guide nose 69. In the mounted state, the fork opening 67 of the slider 66 comprises the driver 60 in the region of the radial groove 63, so that when the slider 66 moves within the oblong hole 411, the driver 60 is carried along.

The per se free ends of the two threaded spindles 5 with the gripping elements 55 are inserted into the coupling 6 depending on the position of the same in different positions. In the disengaged state shown - the slide 66 with the driver 60 is moved to the left - the gripping element 55 of the left threaded spindle 5 lies in the maximum engagement depth in the first engagement contour 62 and the adjacent end portion of the threaded spindle 5 is at maximum depth in the first axial hole 61 The gripping element 55 of the right-hand threaded spindle 5, on the other hand, has no positive connection with the second engagement contour 65, ie lies outside, and the adjacent end section of this threaded spindle 5 is inserted at a minimal depth in the second axial hole 64. The engaged state with a modified driver 60 is shown in FIG shown.

FIGS. 11A to 11E The first axle bolts S1, which are located transversely in the carrier profile 4 and extend between the opposite longitudinal slots 40, are held longitudinally displaceable therein by the first bearing elements 40 connected axially to the axle bolts S1. Between the outer ends of the first axle pin S1 and the first bearing element 54 arranged thereon, there remains an intermediate space in which the upper and lower edges of the side wall 42 surrounding the longitudinal slot 40 engage. The inserted in the hole 430 in the end wall 43 actuating head 50 is rotatably secured by the inside of the support section 4 patch fourth bearing element 52. Between the actuating head 50 and the spindle connection 51, which receives one end of the threaded spindle 5, a further fourth bearing element 52 is inserted. The threaded spindle 5 extends transversely through the first axle pin S1, wherein the external thread of the spindle 5 and the internal thread in the first axle pin S1 engage with each other, so that upon rotation of the spindle 5 for the first axle pin S1 results in a feed.

The second axis A2 is formed by the second pivot pin S2 and the second bearing elements 53 fastened thereto, which engage through the holes 420 in the side walls 42 of the carrier profile 4. In the example shown, the second axle pin S2 is a part bridging the interior in the carrier profile 4. Alternatively, a separate shorter axle pin S2 could be used for each side leg 30 to be guided on the second axle A2.

Figures 12A and 12B

For reading the position of the table top 1 in relation to the horizontal, an indicator 95 in the form of a spirit level element is attached to the table, preferably centrally on a side wall 42 of the carrier profile 4. If the table top 1 is not horizontal, the tendency and magnitude of the skew on the element 95 will be displayed. After this, the user can align the table top 1 horizontally by adjusting the corresponding left or right actuator 5. To read the position of the table top 1 in relation to the horizontal and its height position, an indicator 95 in the form of a scale along the longitudinal slots 40 is proposed. The position of both first axes A1 in relation to the scale scale indicate the current height position of the table top 1. If the two first axes A1 are not symmetrical to the scale, this indicates the extent of the inclination of the table top 1.

In normal operation, the stops 91 are active, ie, they engage in the interior of the carrier profile 4 and thus block the advance of the first axes A1 beyond the minimum height adjustment h _m j _n / P _m j _n , further in the direction of the zero position ho / Po- Will If you bring the table to the zero position ho / Po, you must first deactivate the stop 91, eg by unscrewing it.

The handle 68 of the clutch 6 should protrude far enough out of the slot 411 for easy gripping. The guide nose 69, however, preferably protrudes not out of the slot 411, since the guide nose 69 is only intended to prevent tilting of the slider 66 when actuated. The slot 411 could be divided into two, namely have a first portion for the handle 68 and have a second portion for receiving the guide nose 69.

FIGS. 13C and 13D

To facilitate the shifting from the disengaged state (see Figure 13C) to the engaged state (see Figure 13D), the cam 60 on the side of the second axial hole 64 and the second engagement contour 65 is shaped like a dog clutch, i. the second engagement contour 65 no longer consists of a slot passing through the second axial hole 64 transversely, but of a claw shape resulting from diagonally mounted free cuts.

In the disengaged state (see Figure 13C) causes the actuation of an actuator 5 only a displacement of the associated first axis A1 with angular adjustment of the articulated leg 2. When rotating actuation of the right actuator 5, the gripping member 55 except positive engagement with the second Engaging contour 65, the movement of the right-hand actuator 5 is not transmitted via the coupling 6 to the left actuator 5. In the case of rotary actuation of the left actuator 5, whose gripping member 55 with the first engagement contour 62 positive fit, although the driver 60 is simultaneously rotated, but lacks the positive connection between the gripping member 55 of the right actuator 5 and the second engagement contour 65, so that the right actuator 5 remains at rest.

In the engaged state (see Figure 13D), which is easier to produce in the jaw shape of the second engagement contour 65 as in the slot variant according to Figure 13B, since the gripping member 55 is to be inserted into a larger insertion, is when operating one of the actuators 5 - whether the right or left - in any case by translation of the clutch 6 and the other actuator 5 moves in the same direction. With the movement of the slider 66 to the right, the right actuator 5 out, although the gripping member 55 of the left actuator 5 has advanced in the first engagement contour 62, but still has positive connection with respect At the same time, the second engagement contour 65 has slid over the gripper element 55 of the right-hand actuator 5 and is thus moved by the rotating driver 60 simultaneously and in the same direction.

Claims

claims

A height-adjustable table having a table top (1) supported by two legs (2) and having a top (11) as a work surface and a bottom (12), wherein: a) each leg (2) has two struts (20); b) each strut (20) has an upper end and a lower end, the latter being intended for placement on the ground; and c) the height adjustment of the table top (1) is based on the adjustment of the angle between the legs (2) and the table top (1), characterized in that d) the upper ends of the two struts (20) of each leg (2) are articulated on a first, movable axis (A1), which in a below the table top (1) longitudinal guide (40) is displaceable; e) a traverse (3) is hinged on the one hand in a second fixed axis (A2) below the table top (1); f) the traverse (3) on the other hand in a third movable axis (A3) is articulated together with the two struts (20) of each leg (2); and g) an actuator (5) is provided, which serves to keep the first axis (A1) in the set state in position.

2. Height-adjustable table according to claim 1, characterized in that the first axis (A1) with the actuator (5) is connected, which serves to move the first axis (A1) in the height adjustment in the guide (40).

3. Height-adjustable table according to claim 1, characterized in that the actuator (5) is designed as: a) clamping device to hold the first axis (A1) in the set state in position along the guide (40); or b) grid to hold therein the first axis (A1) in the set state in position along the guide (40).

4. Height-adjustable table according to claim 2, characterized in that the actuator (5) is designed as: a) threaded spindle; or b) rack; or c) chain or cable pull; or d) pneumatic or hydraulic drive.

5. Height-adjustable table according to at least one of claims 1 to 4, characterized in that a) the guide (40) is designed as a longitudinal slots; b) the longitudinal slots in each case a wall (42) of a carrier profile (4) are arranged, on which the table top underside (12) touches; and c) on the first axis (A1) and between the upper ends of two legs (2) forming struts (20) is a first pivot pin (S1), which is fastened by means of first bearing elements (54).

6. Height-adjustable table according to claim 5, characterized in that a) the carrier profile (4) as a tube with a preferably rectangular cross-section; or is formed as an upwardly open U-profile; and b) the longitudinal slots are arranged in two opposite side walls (42) of the carrier profile (4), on which the tabletop underside (12) touches.

7. Height-adjustable table according to at least one of claims 1 to 6, characterized in that on the first axis (A1) and between the upper ends of two leg (2) forming struts (20) is a first pivot pin (S1) which is fastened by means of first bearing elements (54).

8. Height-adjustable table according to at least one of claims 1, 2 and 4, to 7, characterized in that a) through the first pivot pin (S1) has a transverse threaded bore which engages with the threaded member designed as an actuating member (5) stands; and b) the actuator (5) is arranged in the carrier profile (4).

9. Height-adjustable table according to at least one of claims 1 to 8, characterized in that a) the upper ends of two legs (2) resulting struts (20) of a two struts (20) above connecting tab (22) are formed of which extends in continuation of each strut (20) a web (23) having an axle hole (24) therein for engaging the first bearing members (54); and b) the two legs (23) belonging to a leg (2) abut against the side walls (42) of the carrier profile (4).

10. Height-adjustable table according to at least one of claims 1 to 9, characterized in that a) for each of the two legs (2) and the respectively associated first axis (A1) with the first axle pin lying thereon (S1), a separate actuator (5 ) is provided; and b) between the two actuators (5) a coupling (6) is arranged, which causes in the engaged state upon actuation of one of the actuators (5) the simultaneous entrainment of the other actuator (5) and thus both first axle pin (S1) adjusted in the same direction, which gives an adequate same change in the inclination of the two legs (2) and thus also the positioning of the table top (1); while c) in the disengaged state, only one actuated actuator (5) moves and thus only the first axle pin (S1) penetrated by this adjusted, which is an adequate change in the inclination only of the associated leg (2) and thus an adjustment of the inclination of Table top (1) yields.

11. Height-adjustable table according to at least one of claims 1 to 10, characterized in that each actuator (5) at the opposite end of the clutch (6) has an actuating head (50), the frontal on the side of the carrier profile (4), preferably in a respective end wall (43) of the carrier profile (4) is arranged.

12. Height-adjustable table according to claim 11, characterized in that the actuating head (50) has an engagement (500) for applying a

Tool is available to enable the actuator (5) in rotation.

13. Height-adjustable table according to at least one of claims 1 to 12, characterized in that a) the traverse (3) in principle of H-shaped configuration with two side legs (30) and a connecting these middle leg (31); b) a second axle hole (33) is provided at the upper end of each side leg (30) to form the second axle (A2) with a second axle pin (S2) and second bearing bearing elements (53); and c) at the lower end of each side leg (30) there is a first axle hole (32) to engage the third axle (21), third axle pin (S3) and third bearing elements (36) on each strut (20) To form (A3).

14. Height-adjustable table according to at least one of claims 1 to 13, characterized in that a) for limiting a minimum height position (h _m j _n ) of the table top (1) stops (91) are provided, which further feed the first axle ( S1) block; b) in case of override or absence of the stops (91), the legs (2) can swing up to a zero position (ho) of the table top (1) in the manner of a folding table; and c) to limit a maximum height position (h _max ) of the table top (1) additional stops (91) may be present, which block the further feed of the first axle (S1).

15. Height-adjustable table according to at least one of claims 1 to 14, characterized in that a) at the table an indicator (95) is arranged, at which the position of the table top (1) in relation to the horizontal and / or their height position can be read ; and b) an indicator (95) preferably a spirit level element and / or a mass scale for detecting the position of the two first axes (A1) within the guide (40) is used.

16. Height-adjustable table according to at least one of claims 10 and 11, characterized in that a) the coupling (6) consists of a driver (60) and a slide (66) whose operating handle (68) consists of the carrier profile (4). protrudes; b) on the driver (60) on the one hand a first engagement contour (62) and on the other hand, a second engagement contour (65) is present; c) each of the two to the driver (60) leading actuators (5) on the driver (60) facing the end of a gripping member (55) which is intended for positive engagement with the respectively adjacent engagement contour (62,65); d) the gripping element (55) of one of the actuators (5) regardless of the position of the coupling (6) in the relevant engagement contour (62) remains, while the gripping member (55) of the other actuator (5) in the disengaged state with the relevant engagement contour (65), which preferably has the shape of a dog clutch, is disengaged.

17. Height-adjustable table according to at least one of claims 1 to 16, characterized in that a) the carrier profile (4) with upper bends (44) and spars (46) is provided which extend horizontally and the support of the table top underside (12). serve; b) the bends (44) and spars (46) are preferably bolted to the table top underside (12); and the lower ends of the struts (20) of the legs (2) are provided with bottom elements (29) which adapt to different inclinations of the struts (20) attached thereto.