Bench with removable legs

Abstract

The invention relates to a workbench with removable legs, wherein the legs are inserted into insertion openings (7) of a mounting base (6) attached to the underside of a table frame (1) and can be secured in a storage position on the underside of the table frame (1).

Description

Workbench with removable legs field of technology

[0001] The invention relates to a workbench with a rectangular frame from which legs protrude. In the use position of the workbench, the legs are each connected to the frame by a mounting base located on the underside of the frame. The legs can be removed from the mounting bases and, in particular, attached to the frame in a storage position. State of the art

[0002] A table with removable legs is known from EU 001307359-0001.

[0003] Other examples are known from US4231557A, US2018 / 001466A1 or DE10162863A1.

[0004] US4231557A discloses the preambles of independent claims 1 and 9. Summary of the invention

[0005] The invention is based on the object of proposing a practical workbench with removable legs.

[0006] The problem is solved by the invention specified in the claims, whereby the subclaims are not only developments of the independent claims, but also represent independent solutions to the problem.

[0007] Two opposing inner walls of an insertion opening of the actuating base are formed by clamping surfaces. A movable clamping surface is located opposite a fixed clamping surface, with the movable clamping surface being formed by a clamping block that is inserted into a bearing shaft adjacent to the insertion opening. Opposite the movable clamping surface is a pressure surface formed by the clamping block. A clamping surface of an actuating element can act against the pressure surface to displace the movable clamping surface toward the fixed clamping surface upon actuation of the actuating element.In order to compensate for tolerances, for example with regard to the diameter of the legs and in particular the free ends of the legs having a circular cross-section or of the clamping block or the actuating base, it is proposed that the movable clamping surface runs at an angle of inclination relative to an adjustment direction of the clamping block, wherein the clamping block can be adjusted in the direction of adjustment by means of an adjustment element. The pressure surface preferably runs parallel to the adjustment direction. In particular, it is provided that an end face of the clamping block opposite a base of the storage shaft can be brought into an adjustable distance position relative to the base by means of the adjustment element. Furthermore, it can be provided that the adjustment element is an adjustment screw extending in the adjustment direction. The adjustment screw can be screwed into an internal thread assigned to the base.A head of the adjusting screw can rest on a support surface opposite the front side. The adjusting screw preferably extends through a cavity in the clamping block. The cavity is designed to allow movement of the clamping block relative to the adjusting screw in the clamping direction. For this purpose, the cavity preferably has a non-circular and, in particular, elongated cross-section. Furthermore, a spring element can be provided which acts on the clamping block in a direction away from the bottom of the storage shaft. The spring element can be a helical compression spring. The spring element can be arranged in a cavity opening towards the front side. In this area, the adjusting screw can form a step against which a washer is supported, which is acted upon by the spring element supported on the bottom. By turning the adjusting screw, the distance of the step from the bottom of the storage shaft changes.The washer also rests against a base of the cavity, allowing the position of the clamping block to be adjusted by turning the adjusting screw. In particular, the angle of inclination is intended to be between 10° and 20°, and in particular to be 15°. A rear side of the bearing shaft can run parallel to the pressure surface. The pressure surface can rest against the rear side of the bearing shaft when the clamping surface is deactivated. The pressure surface and the movable clamping surface diverge toward the mouth of the insertion opening. As a result of these measures, the clamping range between the two clamping surfaces can be adjusted, for which the wedge shape of the clamping block is advantageous.

[0008] The invention further relates essentially to a workbench having a rectangular table frame with a tabletop to which, in particular, electrically operated tools can be attached. However, other tools or clamping devices can also be attached to the tabletop. The tabletop can also have a flat upper surface. Mounting bases are arranged on the underside of the table frame, preferably in each corner of the table frame. A table leg is attached to each mounting base. Preferably, the workbench has four table legs of equal length, wherein it can be provided that the length of one of the table legs can be changed. In the use position, in which the table legs are attached to the mounting bases, the table can be placed on a surface so that its tabletop runs in a horizontal plane.The workbench can be brought into a storage position by removing the legs from the mounting bases. According to one aspect of the invention, the legs are fastened to the underside of the table frame in the storage position. For this purpose, the table frame can form contact surfaces to which one or more legs are fastened with a fastening element. Two legs lying parallel to one another can be fastened to a contact surface with a common fastening element. It is advantageous if a projection projects from the contact surface, which engages in an opening in the leg in the storage position. The position of the projection can be adapted to the position of the opening such that one edge of the leg lies on one edge of a rectangular base area on which the table frame and in particular the table top extends.This arrangement is particularly advantageous when the length of the leg is approximately equal to or slightly shorter than the length of one edge of the base. In this case, the two ends of the legs pointing away from one another are each located at the edges of the base or are limited to the base. In a development of the invention, which has an independent character, it is provided that each fastening base has an insertion opening. One of the ends of the leg can be inserted into this insertion opening. The legs are preferably held in the insertion opening by a clamping element. To actuate the clamping element, a clamping surface of an actuating element can be displaced. In particular, it is provided that the insertion opening has two clamping surfaces which lie opposite one another and are formed by inner walls of the insertion opening.Preferably, one clamping surface is a fixed clamping surface that cannot be displaced relative to the fastening base, and a clamping surface opposite this is a movable clamping surface. The movable clamping surface can be formed by a clamping block. The clamping block can lie in a cavity in the fastening base. Preferably, the clamping block is inserted in a storage shaft adjacent to the insertion opening and open towards the insertion opening. Opposite the movable clamping surface can be a pressure surface against which a clamping surface of the actuating element can act in order to displace the movable clamping surface towards the fixed clamping surface by actuating the actuating element. It is advantageous if the two clamping surfaces extend substantially over the entire length of the respective inner wall. The legs can be formed by round bodies and in particular by tubes with a circular cross-section.The clamping surfaces can then have cylindrical inner surfaces facing one another. The contact surfaces to which the legs can be attached in the stored position can be assigned to a corner bracket. The corner bracket can be made of sheet metal and form two legs that are at a right angle to each other. This right angle can be formed by a bent edge that coincides with a corner of the base. The support surface can be formed by an angled portion of the corner bracket arranged in the region of the corner of the table frame. The angled portion preferably occurs at a bent edge that is assigned to one of the legs of the corner bracket and is spaced from the bent edge running in the corner of the base. The bent edge assigned to the bent portion can extend along an edge of a leg that runs at an acute angle of approximately 10 to 80° to the bent edge assigned to the corner of the base.From this edge, the contact surface can be bent inwards at a right angle. The contact surface thus preferably extends within the base area. Preferably, two contact surfaces lie opposite one another, with each of the two contact surfaces bordering on opposite edges of the rectangular base area. The projections, which in the stored position each engage in an opening in one of the legs, can be formed by bends in the contact surface, with the projections preferably being bent from the inward-facing edges of the opposing contact surfaces. It can be provided that at least one of the contact surfaces has a projection, so that each leg is fixed in position by a projection on the contact surface. However, it can also be provided that both opposing contact surfaces each form a projection, so that each leg is fixed in position by two projections on the two contact surfaces.The fastening base can bear against the inner walls of the corner angle. Preferably, the fastening base has two outer walls adjacent to one another at right angles. These outer walls can bear flat against the inner walls of each leg of the corner angle. Two pairs of contact surfaces can be provided, with two legs attached to each pair of contact surfaces. The contact surfaces can be arranged mirror-symmetrically to an axis of symmetry extending parallel to the legs. The fastening element with which the legs are attached to the underside of the table frame and the workbench can be a flexible, elongated body, for example a textile band, a cord, or a strap. The fastening element preferably has two ends that can be connected to one another. One of the ends can have an eyelet through which the other end can be passed.The other end can be led back and connected to the fastening element, for example via a Velcro connection. The fastening element is preferably guided through slots, which are preferably longitudinal slots that run parallel to one another, in the table frame and in particular the contact surface. The contact surface formed by a flat body can preferably have two or four longitudinal slots that run parallel to one another. Two legs, which lie parallel to one another and touch one another, can preferably be fastened to the table frame with the fastening element. When brought into the position of use, the legs are preferably directed away from the table frame at an angle of inclination relative to a vertical. The pressure surface of the clamping block can extend in a vertical plane. The clamping surface opposite the pressure surface can be inclined relative to the pressure surface at the same angle of inclination.The upwardly pointing ends of the legs preferably insert into insertion openings that have a circular cross-section. One wall section forms a fixed clamping surface and an opposite wall section forms a movable clamping surface. The clamping surfaces can extend almost to a bottom of the insertion opening. Preferably, the fixed clamping surface extends to the bottom and the movable clamping surface almost to the bottom. The width of the clamping surface can be slightly smaller than the diameter of the insertion opening. The direction of displacement of the clamping block runs parallel to the extension plane of the table top of the table frame. The clamping block can form an elongated cavity extending parallel to the pressure surface. The elongated cavity can thus extend in the direction of a surface normal to the extension plane of the table top.A fastening element extends through the elongated cavity and is connected to a base of the storage shaft, which in turn can run parallel to the tabletop plane. There, a nut can be embedded in the plastic fastening base, into which the fastening element formed by a fastening screw is screwed. The head of the screw can lie in a recess in a side surface of the clamping block. The insertion opening and the storage shaft are preferably formed by a common cavity, which in the area of the storage shaft has side walls running parallel to one another, the distance between which can correspond to the outer diameter of the leg. Outer walls of the clamping block can slide along these side walls when the clamping block is moved by moving, for example, a clamping lever. The clamping block then also moves relative to the fastening element.The direction of displacement of the terminal block in its plane of extension can be an angle bisector of two edges of the base area that are at right angles to each other. The terminal block can have two outer wall sections that extend parallel to the angle bisector. Two further outer sections of the terminal block can extend at right angles to it, so that the terminal block has an arrow-shaped outline. Short description of the drawings

[0009] An embodiment of the invention is explained below with reference to the accompanying drawings. They show: Fig. 1 is a perspective view of a workbench in a use position, in which four legs 3 are fastened to the table frame 1 by means of fastening bases 6, each in the area of a corner of a table frame 1. Fig. 2 is a perspective rear view of the workbench in the storage position, in which the four legs 3 are fastened to corner angles 5 by means of fastening elements 36. Fig. 3 is an enlarged section III in Figure 2 , Fig. 4 a section according to the section area IV-IV in Figure 3 , Fig. 5 a perspective view of a corner angle 5, which forms a contact surface 33 for the attachment of two legs 3, which can be fastened there with a fastening element 36, Fig. 6 a plan view in the direction of the arrow VI in Figure 2 on a mounting base 6, Fig. 7 a side view according to arrow VII in Figure 6 , Fig. 8the section along the line VIII-VIII in Figure 6, wherein no leg 3 is in an insertion opening 7 and a clamping lever 11 is in a release position, Fig. 9 a representation according to Figure 8 , but with the leg 3 inserted into the insertion opening 7 and the clamping lever 11 in a clamping position, Fig. 9a a representation according to Figure 9 but with a clamping block 8 which has been placed in a spaced position to a floor 24 of the storage shaft 19, Fig. 10 a section along the line XX in Figure 7 . Description of the embodiments

[0010] The workbench shown in the drawings is a workbench to which electrically operated tools can be attached. The workbench has a table frame 1 with a tabletop 2 extending in a horizontal plane. Clamping tools or the like can be attached to the tabletop 2. Drive motors for circular saws or milling machines or the like can be attached beneath the tabletop 2. These motors can drive cutting tools that can extend upwards above the tabletop 2, at least in some areas. Furthermore, stops or the like can be attached to the tabletop 2, along which a workpiece to be machined can be guided.

[0011] On the underside of the table frame 1, in each corner of a rectangular base area of the table, fastening bases 6 are attached, with each of which a leg 3 is attached to the table frame 1. The legs 3 can be removed from the Figure 1shown in the usage position into a storage position, which is in the Figure 2 is shown. For this purpose, the legs 3 are separated from the mounting bases 6 and attached to the underside of the table frame 1 with fastening elements 36. The length L of the legs 3 preferably corresponds approximately to an edge of the table frame 1. The length L can be slightly shorter than the edge.

[0012] In each of the four corners of the table frame 1 there is a corner bracket 5 made of sheet metal or plastic. Figure 5 The corner bracket 5, shown in perspective, can be screwed to an edge of the table top 2 of the table frame 1 by means of screws or the like. The corner bracket 5 has two legs 26, 26' that meet at an edge 27. The edge 27 is preferably formed by a bent edge.

[0013] Each of the two legs 26, 26' has a peripheral edge 30, 31 extending at an angle of approximately 10 to 80° to the edge 27. A section of the peripheral edge 31 is bent along a bending line 28, forming a contact surface 33. In the exemplary embodiment, each of the four corner angles 5 forms such a contact surface 33, with the contact surfaces 33 of two opposite corner angles 5 facing toward each other. The ends of two parallel, adjacent legs 3 can be attached to each of these contact surfaces 33 using the fastening element 36.

[0014] At least one of the two opposing contact surfaces 33 forms a projection 34. Preferably, the contact surface 33 forms two projections 34 arranged at a distance from one another, which are bent from a peripheral edge 29 that runs parallel to the bending edge 28. The projections 34 are bent at bending edges 34', wherein the bending edges 34' extend parallel to the peripheral edge 29.

[0015] The contact surface 33 forms four longitudinal slots 35 running parallel to one another, with the longitudinal slots 35 extending in a direction parallel to the extension direction of the legs 3. A tensioning strap 36 forming the fastening element, which can be made of a textile material, is guided through the longitudinal slots 35. A first end 36' of the fastening element 36 forms an eyelet 37 through which the second end 36" is guided. The second end 36" is connected to the fastening element 36 via a hook-and-loop fastener.

[0016] The legs 3 have an opening 38 at least in the region of one of their ends, through which the projection 34 can pass. However, it can also be provided that the legs 3 have an opening 38 in the region of each of their ends, through which a projection 34 formed by a contact surface 3 can pass. Two openings 38 opposite each other in the circumferential direction can be provided.

[0017] The Figures 6 to 10show a mounting base 6, with which a leg 3 can be attached to the table frame 1. The mounting base 6 has two outer walls 20 running at a right angle to one another, which can rest on inner walls 5' of the two legs 26 of the corner angle 5. The mounting bases 6 can be attached to the corner angle 5, for example, using screws. The mounting bases 6 are thus preferably attached to the table frame 1 or to the table top 2 using the corner angles 5. In particular, it is provided that the mounting bases 6 have outer walls 20 standing at right angles to one another, which rest on inner walls 5' of the legs 26 of the corner angle 5, wherein the legs 26 are connected to the mounting base 6 by means of screws or other fastening means and the mounting base 6 is attached to one edge of the table top 2 exclusively by means of the corner angle 5.

[0018] The mounting base 6 forms an insertion opening 7 into which one end of a leg 3 can be inserted. The insertion opening 7 is partially surrounded by a first clamping surface 10, which extends along a semicircular arc. The clamping surface 10 is formed by a housing wall, which is connected via webs 25 to a housing wall forming the outer wall 20.

[0019] Adjacent to the insertion opening 7 is a storage shaft 19 in which a clamping block 8 is slidably guided. Side walls 40 of the clamping block 8 rest against the side surfaces of the storage shaft 19. The clamping block 8 forms a clamping surface 9 opposite the clamping surface 10. The two clamping surfaces 9, 10 encompass a circular cylindrical space. The clamping block 8 can cooperate with the eccentric surface 13 of a clamping lever 11. The clamping lever 11 has a lever arm 14 which is pivotally mounted on the clamping block 8 about a pivot axis 12. By pivoting the clamping lever 11 from a release position shown in Figure 8 into a position shown in the Figure 9 In the clamping position shown, the clamping block 8 can be displaced in the direction of the clamping surface 10, so that an end of a leg 3 inserted into the insertion opening 7 is clamped between the two clamping surfaces 9, 10.

[0020] The clamping block 8 has a wedge shape. With the blunted wedge tip, the clamping block 8 projects into the storage shaft 19 and can be supported with a front surface 8' on a floor 24 of the storage shaft 8, as shown in the Figure 9 The base 24 is assigned a restraining element 18 in the form of an internal thread formed by a nut. An external thread of a fastening screw 17 is screwed into the internal thread and extends through an elongated cavity 16 of the clamping block 8. The head of the fastening screw 17 lies in a recess 25 of the clamping block 8.

[0021] The clamping surface 9 extends at an angle to the pressure surface 15 which corresponds to the angle of inclination at which the legs 3 are inclined relative to a vertical.

[0022] The clamping block 8 can be moved in a horizontal plane. The direction of displacement of the clamping block 8 corresponds to an angle bisector through the legs 26, 26' of the corner bracket 5.

[0023] The storage shaft 19 is located in an extension adjoining an outer wall 22 which runs transversely to the angle bisector, which has outer walls which run transversely to the outer walls 22 and parallel to the angle bisector.

[0024] The fastening screw 17 forms an adjustment element with which the clamping block 8 can also be displaced in a vertical direction. A spring element 41, in particular a helical compression spring, extends within a cavity 43 opening toward the end face 8'. One end of the spring element 41 rests on the base 24 and the other end acts against the base of the cavity 43. A washer 42 lies on the base of the cavity 43 and also rests against a step on the shaft of the adjusting screw 17. The washer 42 is acted upon by the spring element 41. As a result, turning the adjustment element 17, for example, with a screwing tool inserted into a screwing tool engagement opening of a head 17' of the adjusting screw 17, leads to a change in the position of the clamping block 8 in the vertical direction. The head 17' of the adjusting screw 17 is supported on a support surface 25'.The distance between the front side 8' and the bottom 24 of the storage shaft 19 changes.

[0025] During this change in position, the pressure surface 15, which runs parallel to the rear wall of the storage shaft 19, can slide along the eccentric surface 13. Due to the inclination of preferably 10° to 20° and particularly preferably approximately 15° of the movable clamping surface 9 relative to the rear of the storage shaft 19 or the direction of extension of the adjustment element 17, the distance between the two clamping surfaces 9, 10 also changes during the change in position, so that the effect of the actuating element 11 can be adapted to legs 3 with different diameters or other tolerances can be compensated for with the adjustment element 17.

[0026] The function of the clamping element 11 is as follows: The free end of a leg 3 is inserted into the insertion opening 7 and the clamping lever 11 is brought into an intermediate position, such as the Figures 9 and 9a show. Then, using the adjusting screw 17 and a screwing tool inserted into a screwing tool engagement opening in the head 17' of the adjusting screw 17, the adjusting screw 17 is turned until both clamping surfaces 9, 10 are in contact with the leg. From this position, the clamping lever 11 can then be moved into a clamped position in which, due to elastic deformation, a force is exerted against the surface of the leg. In order to remove the leg 3 from the insertion opening 7, the clamping lever 11 is moved beyond the intermediate position into a release position in which the leg 3 lies only loosely between the clamping surfaces 9, 10.

[0027] The fastening base 6 functions as follows: In the use position, the ends 3' of the legs 3 are each inserted into an insertion opening 7. The clamping block 8 is brought into a clamped position by means of the actuating element 11 forming the clamping surface 13, in which the end 3' is clamped between the clamping surfaces 9, 10. By releasing the actuating elements 11, the clamped position of the clamping surfaces 9, 10 is released, so that the ends 3' of the legs 3 are no longer clamped between the clamping surfaces 9, 10. The legs 3 can now be pulled out of the insertion openings 7.

[0028] The four legs 3 can then (see Figure 2 ) are placed in a parallel position of two legs 3 against the four contact surfaces 33, with at least one projection 34 projecting into an opening 38. The ends 3' of the legs 3 are fastened to the stop surfaces 33 with the fastening element 36.

[0029] The above statements serve to explain the inventions covered by the application as a whole, which each independently develop the state of the art by at least the following combinations of features, whereby two, several or all of these combinations of features can also be combined, namely:

[0030] A workbench characterized in that the clamping block 8 can be displaced in an adjustment direction inclined to the movable clamping surface 9 by means of an adjustment element 17.

[0031] A workbench which is characterized in that an end face 8' of the clamping block 8 opposite a base 24 of the storage shaft 19 can be brought into an adjustable distance position relative to the base 24 by means of the adjusting element 17.

[0032] A workbench characterized in that the adjusting element 17 is an adjusting screw extending in the adjustment direction, which is screwed into an internal thread assigned to the base 24, which extends through a cavity 16 having an elongated cross-section opening into the end face 8' and whose head is supported on a support surface 25' opposite the end face 8'.

[0033] A workbench which is characterized by a spring element 41 which acts on the clamping block 8 in the direction away from the bottom 24 of the storage shaft 19 and / or that an end face 8' of the clamping block 8 opposite the bottom 24 has a cavity 43 in which a spring element 41 formed by a helical compression spring is received.

[0034] A workbench characterized in that the pressure surface 15 runs parallel to the adjustment direction.

[0035] A workbench characterized in that the two clamping surfaces 9, 10 extend over the entire axial length of the respective inner wall and / or that the actuating element is a clamping lever 11 and the clamping surface 13 is an eccentric surface.

[0036] A workbench, which is characterized in that the insertion opening 7 and the storage shaft 19 are formed by a common cavity, wherein side walls 40 of the clamping block 8 facing away from each other rest on inner walls of the storage shaft 19 and have a distance which corresponds approximately to the outer diameter of the leg 3 formed by a circular tube, and / or that the clamping surfaces 9, 10 extend on inner surfaces of circular cylinders.

[0037] A workbench characterized in that the fastening base 6 is a plastic part forming two outer walls 20 adjacent to one another at a right angle, and / or that the displacement direction of the clamping block 8 is an angle bisector of two outer walls adjacent to one another at a right angle, wherein two sections of a rear outer wall 22 of the fastening base 6 run transversely to a wall of the storage shaft 19 running parallel to the angle bisector.

[0038] A workbench with a rectangular table frame 1 and legs 3, which in a use position of the workbench are each connected to the table frame 1 by a fastening base 6 arranged on the underside of the table frame 1 and which in a storage position of the workbench are connected to the table frame 1 by a fastening element 36 on contact surfaces 33 arranged on the underside of the table frame 1, wherein the contact surfaces 33 each have a projection 34 which engages in an opening 38 of the leg 3 in the storage position.

[0039] A workbench characterized in that the contact surfaces 33 are each formed from a bend in a corner bracket 5 made of sheet metal and arranged in the region of the corner of the table frame 1, and / or in that the corner bracket 5 has two first and second legs 26' meeting at a first bending edge 27, and / or in that the legs 26' have an edge 30, 31, and / or in that the bend 32 is bent at a right angle along a second bending edge 28 extending in the edge 30 from the first leg 26' in the direction of an inner wall 5' of the first leg 26', and / or in that at least one projection 34 projects along a third bending edge 34' from an edge 29 of the bend 32, and / or in that the second bending edge 28 runs at an angle of 10° to 80° to the first bending edge 27.

[0040] A workbench characterized in that the corner angle 5 has inner walls 5' which abut against outer walls 20 of the fastening base 6, wherein it is provided in particular that the inner walls 5' are formed by the legs 26 which are connected to the fastening base 6 by means of fastening elements.

[0041] A workbench, characterized in that the table frame 1 extends on a rectangular base surface which has a first edge whose length corresponds approximately to or at least to the length L of the legs 3, and which has a second edge, each of which is adjoined by a contact surface 33, and / or that the contact surfaces 33 are inclined at an angle of 10° to 80° with respect to a tabletop plane of the table frame 1, wherein each of the two ends 3' of the legs 3 has an opening 38 into which a projection 34 engages in the storage position.

[0042] A workbench characterized in that the fastening element 36 is a flexible elongated body having two interconnectable ends 36', 36" and is guided through slots 35 in a respective contact surface 33 and / or that the contact surface 33 formed by a flat body has at least two or at least four mutually parallel longitudinal slots 35 through which the fastening element 36 formed by a tensioning belt is guided, and / or that the fastening element 36 fixes two parallel, adjacent legs 3 to the contact surface 33.

[0043] A workbench, which is characterized in that the legs 3 are directed away from the table frame 1 by an angle of inclination relative to a vertical and the pressure surface 15 is inclined relative to the movable clamping surface 9 by the angle of inclination, and / or that the actuating element is a clamping lever 11 and the clamping surface 13 is an eccentric surface and / or that the fixed clamping surface 10 is formed by the wall of a cavity forming the insertion opening 7 and extends up to a stop 23', which is formed in particular by a bottom 23 of the insertion opening 7. List of reference symbols

[0044] 1 table frame 23 Floor 2 table top 23' stop 3 leg 24 Floor 3' End 25 Deepening 4 frame 25' Support surface 4' connecting element 26 first leg 5 Corner bracket 26' second leg 5' interior wall 27 Bending edge 6 Mounting base 28 Bending edge 7 Insertion opening 29 edge 8 terminal block 30 edge 8' front side 31 edge 9 clamping surface 32 Bending 10 clamping surface 33 contact surface 11 clamping lever, actuating element 34 projection 12 axis of rotation 34' Bending edge 13 Eccentric surface, clamping surface 35 Longitudinal slot 14 lever arm 36 Fastening element, tensioning strap 15 Print area 36' End 16 cavity 36" End 17 Fastening element, adjusting element, adjusting screw, fastening screw 37 Eye 38 opening 39 Foot, sleeve 18 restraining element, internal thread 40 side wall 41 spring element 19 storage shaft 42 washer 20 exterior wall 43 cavity 21 rib L length 22 exterior wall

Claims

1. Worktable with a table frame (1) and legs (3) which, in a position of use of the worktable, are each connected to the table frame (1) by a fastening base (6) arranged on the underside of the table frame (1), wherein the fastening bases (6) each have an insertion opening (7) for inserting one end (3') of the leg (3), wherein two opposing inner walls of the insertion opening (7) are formed by a fixed clamping surface (10) and a movable clamping surface (9) opposite thereto, characterised in that in that the movable clamping surface (9) is formed by a clamping block (8) which is inserted in a bearing shaft (19) adjacent to the insertion opening (7) and has a pressure surface (15) which points away from the movable clamping surface (9) and against which a clamping surface (13) of an actuating element (11) acts, in order to displace the movable clamping surface (9) in the direction of the fixed clamping surface (10) by actuating the actuating element (11), wherein the clamping block (8) can be displaced in an adjustment direction inclined to the movable clamping surface (9) by means of an adjustment element (17).

2. Worktable according to claim 1, characterised in that an end face (8') of the clamping block (8) opposite a base (24) of the bearing shaft (19) can be brought into an adjustable spaced-apart position relative to the base (24) by means of the adjusting element (17).

3. Worktable according to one of the preceding claims, characterised in that the adjusting element (17) is an adjusting screw extending in the adjusting direction, which is screwed into an internal thread associated with the base (24), which extends through a cavity (16) opening into the end face (8') and having an elongate cross-section and the head of which is supported on a support surface (25') opposite the end face (8').

4. Worktable according to one of the preceding claims, characterised by a spring element (41) acting on the clamping block (8) in the direction away from the base (24) of the bearing shaft (19) and / or in that an end face (8') of the clamping block (8) opposite the base (24) has a cavity (43) in which a spring element (41) formed by a helical compression spring is accommodated.

5. Worktable according to one of the preceding claims, characterised in that the pressure surface (15) runs parallel to the direction of adjustment.

6. Worktable according to one of the preceding claims, characterised in that the two clamping surfaces (9, 10) extend over the entire axial length of the respective inner wall and / or in that the actuating element is a clamping lever (11) and the clamping surface (13) is an eccentric surface.

7. Worktable according to one of the preceding claims, characterised in that the insertion opening (7) and the bearing shaft (19) are formed by a common cavity, wherein side walls (40) of the clamping block (8) pointing away from each other rest against inner walls of the bearing shaft (19) and have a spacing which corresponds approximately to the outer diameter of the leg (3) formed by a circular tube, and / or in that the clamping surfaces (9, 10) extend on circular cylinder inner surfaces.

8. Worktable according to one of the preceding claims, characterised in that the fastening base (6) is a plastic part forming two outer walls (20) adjoining one another at a right angle, and / or in that the displacement direction of the clamping block (8) is a bisector of two outer walls adjoining one another at a right angle, wherein two sections of a rear outer wall (22) of the fastening base (6) extend transversely to a wall of the storage shaft (19) extending parallel to the bisector.

9. Worktable with a rectangular table frame (1) and legs (3) which, in a position of use of the work table, are each connected to the table frame (1) by a fastening base (6) arranged on the underside of the table frame (1), and characterised in that in that the contact surfaces (33) arranged on the underside of the table frame (1) in a storage position of the workbench are connected to the table frame (1) in contact with a fastening element (36), the contact surfaces (33) each having a projection (34) which engages in an opening (38) of the leg (3) in the storage position.

10. Worktable according to claim 9, characterised in that the contact surfaces (33) are each formed by a bend of a corner bracket (5) made of sheet metal arranged in the region of the corner of the table frame (1), and / or in that the corner bracket (5) has two first and second limbs (26') meeting at a first bending edge (27), and / or in that the limbs (26') have an edge (30, 31), and / or that the bend (32) is bent at right angles along a second bending edge (28) extending in the marginal edge (30) from the first leg (26) towards an inner wall (5') of the first leg (26), and / or at least one projection (34) projects along a third bending edge (34') from a marginal edge (29) of the bend (32) and / or that the second bending edge (28) extends at an angle of 10° to 80° to the first bending edge (27).

11. Worktable according to one of claims 9 or 10, characterised in that the corner bracket (5) has inner walls (5') which bear against outer walls (20) of the fastening base (6), it being provided in particular that the inner walls (5') are formed by the legs (26) which are connected to the fastening base (6) by means of fastening elements.

12. Worktable according to one of claims 9 to 11, characterised in that the table frame (1) extends on a rectangular base surface which has a first edge, the length of which corresponds approximately or at least to the length (L) of the legs (3), and which has a second edge, a respective contact surface (33) adjoins and / or in that the contact surfaces (33) are inclined at an angle of 10° to 80° relative to a tabletop plane of the table frame (1), each of the two ends (3') of the legs (3) having an opening (38) in which a projection (34) engages in the storage position.

13. Worktable according to one of claims 9 to 12, characterised in that the fastening element (36) is a flexible elongated body which has two ends (36', 36") which can be connected to one another and is guided through slots (35) in a respective contact surface (33) and / or in that the contact surface (33) formed by a flat body has at least two or at least four longitudinal slots (35) running parallel to one another, through which the fastening element (36) formed by a tensioning belt is guided, and / or in that the fastening element (36) fixes two parallel adjacent legs (3) to the contact surface (33).

14. Worktable according to one of the preceding claims, characterised in that the legs (3) are directed away from the table frame (1) by an angle of inclination relative to a vertical and the pressure surface (15) is inclined relative to the movable clamping surface (9) by the angle of inclination, and / or that the actuating element is a clamping lever (11) and the clamping surface (13) is an eccentric surface and / or that the fixed clamping surface (10) is formed by the wall of a cavity forming the insertion opening (7) and extends as far as a stop (23'), which is formed in particular by a base (23) of the insertion opening (7).

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