WO2012065776A1

WO2012065776A1 - Workbench, in particular for the workshop sector

Info

Publication number: WO2012065776A1
Application number: PCT/EP2011/066369
Authority: WO
Inventors: Ernst Dreher; Christoph Cramer
Original assignee: Robert Bosch Gmbh
Priority date: 2010-11-18
Filing date: 2011-09-21
Publication date: 2012-05-24
Also published as: DE102010044103A1; EP2640557A1; EP2640557B1

Abstract

A workbench, in particular for the workshop sector, has a tabletop (5) and supports (10, 20) engaging thereon. The tabletop (5) has at least two tabletop parts (2, 59) which are held pivotably about a hinge axis (4) by means of a hinge (3) and can be folded up from a working position having a substantially horizontal profile into a folded position in which the tabletop parts (2, 59) are oriented approximately parallel to each other. A first tabletop part (59) is supported on two supports (20), which are pivotable thereon about a pivot axis (61), by means of in each case one obliquely running supporting strut (11) which is held at one end on the first tabletop part (59) at a transverse distance from the hinge axis (4) so as to be pivotable about a first pivot axis (27) and at the other end on the respective support (20) so as to be pivotable about a second pivot axis (54) and is formed from two struts (38, 21) which are connected via a joint (22) and are lockable in the region of the joint (22) by means of a locking device (26) and are releasable by means of a release device (40) and, after being released, are foldable.

Description

Description title

Worktable, especially for the workshop area state of the art

The invention relates to a work table, in particular for the workshop area, according to the preamble of claim 1.

There are known work tables in the form of so-called sawing tables, which have a table top with four vertical legs as supports which engage each corner of the table top. In these saw tables, the table top consists of a flat surface

continuous, non-hinged element. In another known work table (US 2007/0018371 AI), the table top consists of two separate, relatively horizontally adjustable plate parts, which are mutually parallel on both sides

Longitudinal beams are arranged. The side rails are held by supports on base parts, which attack four foldable legs.

Disclosure of the invention

The work table according to the invention, in particular for the workshop area, has the advantage that the pivotable between the working position and the folding position at least two plate parts are reliably supported and held in the unfolded working position with a substantially horizontal course and quickly and easily by the user of the work table by pressing the Triggering device can be transferred to the folded position. In this case, the operator can initiate this operation of the triggering device from its working position, in which the operator is in the range of a plate member without having to run around the table top to one of the sides. Conversely, a simple way

Open, starting from the folding position, in the working position with in

Substantially horizontal plate course possible, by means of Locking a secure locking of the struts in the joint can be done automatically and thereby the plate parts of the work table are supported so reliable that can be worked on the table surface without fear of instability. Another advantage is that the work table in the

folded folding position saves space and is compact and in this state can be easily and easily taken and carried away by the operator. In this condition, the worktable requires little space for its accommodation.

The measures listed in the further claims advantageous refinements and improvements of claim 1 work table are possible.

An advantageous embodiment of the work table according to the invention provides that the two struts for bringing about the folding position of the first plate member about the axis of the joint towards each other and about the pivot axes to the first plate member or the support out in a folded position can be folded in the both struts approximately parallel to each other and extend to the first plate member and the respective support, and which are hinged to bring about the working position of the first plate member about the axis of the hinge away from each other in a support position in which both struts are approximately in alignment. In this unfolded support position both struts together form a substantially rectilinear support strut, which ensures a secure support of a pivotable plate member with respect to the respective support.

It may be advantageous if the locking device has a locking member on the one hand and a latch recess on the other hand, in which the locking member in the

Supporting position positively engages and from which the locking member is moved out for unlocking, wherein the locking member is disposed on a strut and the locking recess on the other strut. The locking member and the associated

Riegelausnehmung together form a simple locking device that reliably automatically passes when transferring into the working position in the locking support position without the operator has to lend a hand.

On the locking member can advantageously a spring, in particular a compression spring attack, by means of which the locking member is resiliently held in the locking recess and in this is pressed into it and - after unlocking - is automatically reset to re-locking in this.

A further advantageous embodiment provides that the locking recess is formed as a locking groove in a groove body and the groove body leading to a locking groove, z. B. oblique, wedge-shaped or arcuate, ramp surface for the locking member. Preferably, the locking member is designed as a locking slide with endseitigem locking projection in the form of a nose which engages positively in the locking recess. It may be advantageous if the locking member, in particular the locking projection, a z. B. oblique, wedge-shaped or arcuate ramp surface at the end, on which the

Run-on surface of the Nutkörpers in the movement runs back into the locked support position until the locking projection reaches the locking groove in the Nutkörper and is re-inserted under the action of the spring. Advantageously, the triggering device acts on each locking member attacking

Pull rope, which is acted upon by means of an acting on the pull cable actuator as a central actuator with a tensile force for unlocking, which counteracts the action of the spring and pulls the locking member for unlocking out of engagement with the latch recess. Such, evenly acting on both locking members pull rope is simple and reliable and allows a central actuation z.

B. from the table top of the work table. On the pull rope can if necessary

Spacer rings are applied to ensure even distribution of traction. In an advantageous manner, the traction cable is guided in a guide extending below the first plate part, in the area approximately the first pivot axis each

Support strut to this z. B. deflected by a roller and guided from there to the locking member to which the pull cable is attached. Despite the pivotability of the respective support strut about the first pivot axis, a guidance of the pull rope is thereby achieved in a simple manner up to the locking member operable thereby.

It may also be advantageous if the actuating member is designed as preferably in a recess in the first plate part tangible pivot lever engages with located at a distance from its pivot axis end on the pull rope such that a pivoting operation of the pivot lever z. B. away from the disk surface

Traction on the pull cable to unlock the respective locking member generated. At least one strut of the respective support strut may be formed as a U-profile. Also, both struts can have U-profile. In the folded position of both support struts, a strut can be accommodated in the interior of the other strut, if the U-profile of a strut with respect to the dimensions of the other strut is dimensioned correspondingly larger.

In the unfolded working position of the work table, two of the supports, which engage a corner region of a plate member, extend approximately at an angle of 90 ° to this plate member. The two other supports acting on the first plate part may be designed as inclined legs, while the first-mentioned supports are designed as telescopic elements that can be pushed together for shortening and extended to extend, which can be latched together at least in the extended position. This ensures that the work table can be converted into a space-saving compact folding position when not in use, in which the work table is a narrow structure and requires little space for its accommodation.

Description of the drawings

The invention is explained in more detail in the following description with reference to an embodiment shown in the drawings. 1 shows a perspective view of a work table whose table top is in the folded-up working position, FIG. 2 shows a schematic perspective view of a part of FIG

Work table with bottom view,

Fig. 3 is a perspective view of a detail of Fig. 2 in

enlarged scale,

Fig. 4 is a schematic partial longitudinal section of a support strut of

Work table in support position,

Fig. 5 is a perspective view of the work table in the

folded folding position. In the drawings, a work table 1 is shown, in particular in the workshop area, for. As home improvement area od. Like., Can be used, but can also be used in many other ways. The work table 1 has a table top 5 and four supports 10, 20 engaging thereon. The table top 5 has at least two

Plate parts 2 and 59, which by means of a running below the top of the plate

Hinge 3 are pivotally supported about a schematically indicated hinge axis 4 and are folded down from a working position shown in FIG. 1 with a substantially horizontal course in a folded position shown in Fig. 5, in which the plate members 2, 59 are aligned approximately parallel to each other.

Two supports 20 are designed as legs and are held on the first plate member 59 approximately in the region of the hinge axis 4 about a pivot axis 61 pivotally. The other two supports 10 are designed as telescoping elements 48, 53 which can be pushed together for shortening and extendable for extension, which telescopes can be latched together at least in the extended position. The trained as legs

Supports 20 may extend obliquely starting from the pivot axis 61. The first plate part 59 is connected to these supports 20 by means of a respective obliquely running

Support strut 11 supported. Each of these support struts 11 is pivotally supported at one end about a first pivot axis 27 on the first plate portion 59, wherein the first

Swivel axis 27 in transverse distance from the hinge axis 4 extends. With the other, in

Fig. 1 lower end of each support strut 11 is pivotally supported about a second pivot axis 54 on the respective support 20.

From Fig. 2 to 4 it can be seen that each support strut 11 is formed of two connected via a joint 22 struts 38 and 21, which in the region of the joint 22 by means of a

Locking device 26 can be locked and unlocked by means of a triggering device 40 and are hinged after unlocking.

In order to bring about the folding position of the plate parts 2, 59 shown in FIG. 5, the two struts 38 and 21 can be folded about the axis of the joint 22 into a folding position.

Here, starting from FIG. 1, the strut 38 is pivotable about the pivot axis 27 in the clockwise direction and the other strut 21 about the pivot axis 54 in the counterclockwise direction. When folding the struts 38, 21 move toward the axis of the joint 22 in the direction toward each other, wherein the strut 38 to the plate member 59 and the strut 21 to the support 20 is foldable. In the retracted fold position both struts 38 extend, 21 approximately parallel to each other and parallel to the plate member 59 and the respective support 20th

1, the struts 38, 21 about the axis of the joint 22 away from each other in the support position shown in Fig. 1 hinged, in the both struts 38, 21 run approximately in an alignment.

Details of the locking device 26 are shown in Fig. 4. The

Locking device 26 has a locking member 37 on the one hand and a

Lock recess 36 on the other hand, in which the locking member 37 engages positively in the locked support position. To unlock the locking member 37 can be moved out of the locking recess 36. The locking member 37 is disposed on the strut 38 and the latch recess 36 on the other strut 21. The conditions can also be reversed. At least one strut 21 is formed as a U-profile. In the illustrated embodiment, the other strut 38 may be designed as a U-profile. In the folded position, a strut 38 can be accommodated in the interior of the slightly larger sized U-profile of the strut 21. The joint 22 is formed from a sleeve 23 and a pin 24, wherein the sleeve 23 z. B. between two parallel legs of the strut 38 is held, which are overlapped by outer parallel legs of the other strut 21, as shown in FIG. 3. The sleeve 23 is penetrated by the bolt 24, which is held in the two outer legs of the strut 21 at the ends, as can be seen from FIGS.

The locking device 26 has a groove body 46 which is fastened by means of a screw 25 in the interior of the strut 21 and thereby in an opening of the

Base leg of the U-profile of the strut 21 is received positively. Between the groove body 46 and the two-sided, mutually parallel legs of the strut 38 is sufficient latitude for the relative pivoting movement left. The groove body 46 has a locking groove 47 as a locking recess 36. The groove body 46 is further provided with a ramp surface 63, the z. B. wedge-shaped or arcuate and leads to the locking groove 47.

The locking member 37 is formed as a locking slide 64 which is placed in the space between the two U-legs of the strut 38 and guided by double-sided guides in the form of the material of the strut 38 pronounced ribs in the transverse direction, in the Representations are omitted for better clarity. The locking slide 64 is z. B. from a one-piece plastic part. He has at the groove body 46 facing the end of an end locking projection 65 in the form of a nose, which engages positively in the iegelausnehmung 36 of the groove body 46. The locking member 37, in particular the locking projection 65, has at the end a z. B. wedge-shaped or arcuate ramp surface 66 on which the ramp surface 63 of the groove body 46 can accumulate during movement into the locked support position shown in FIG.

On the locking member 37 engages a spring 39, in particular compression spring, by means of which the locking member 37 is held in the locking recess 36 and is automatically reset after unlocking in this. The spring 39 is designed as a cylindrical coil spring and received in a recess 41 of the locking member 37. With the lower end, the spring 39 is supported on the bottom of the recess 41. The other, upper end of the spring 39 is axially supported on an abutment member 42, the z. B. is formed from the material of the strut 38.

At a distance above the spring 39, a screw-43 is introduced into the locking member 37, in which a screw 44 is screwed. The release device 40 shown in FIGS. 2 to 4 has a pull cable 33 which acts on each locking member 37 and can be acted upon by a pulling force acting on the pull cable 33, shown in FIGS Counteracts effect of the spring 39 and the respective locking member 37 each support strut 11 for unlocking out of engagement with the latch recess 36 pulls. The traction cable 33 is below the first plate member 59 in both sides extending guides

32 led. In the area about the first pivot axis 27 z. B. on a local bearing block 31, which serves to support the support strut 11, a roller 30 rotatably mounted. About the two-sided rollers 30, the pull cable 33 is deflected and guided from there to the upper end portion of each support strut 11, where the pull cable 33 engages via the screw 44 on the locking member 37 in the strut 38. The traction cable 33 is approximately free on the half of the first plate member 59, where the actuator 34 is arranged. The

Actuator 34 is designed as a pivot lever 35 which is pivotally held with angled portions about a pivot axis 51 on the plate member 59. With there ends 58 which extend at a distance from the respective pivot axis 51, the pivot lever 35 engages the pull cable 33 in such a way that a pivoting movement of

Pivoting lever 35 in Fig. 1 and 2 upwards about the pivot axis 51, a tensile force on Pull rope 33 generated. The pivoting lever 35 is led out via an arcuate part through a recess 45 of the plate member 59 with a hand-tangible end and abuts against a stop 49 which is part of the plate member 59. The work table 1 has bilateral connecting struts 56 which, starting from the second pivot axis 54 of the supports 20, lead transversely to the two supports 10. Furthermore, lead to the two supports 10 on each side obliquely oriented trusses 19 which are hinged end below the first plate member 59 by means of bolts 52. The two supports 10 are connected to each other at the lower end via a crossbar 55. They are each formed of telescopic elements 53 and 48, which are shown in Fig. 1 in the extended state and latched on only indicated locking means 50 and to bring about the folding position shown in FIG. 5 by overcoming the locking means 50 are pushed together as far as that then the supports 10 approximately at the same height as the other two supports 20 end.

If the worktable 1, starting from the unfolded working position shown in FIGS. 1 to 4 with a horizontal course of the two plate parts 2, 59,

is to be folded, is activated by the operator, the triggering device 40 by pulling the pivot lever 35 in Fig. 1 upwards. As a result, over the two ends 58 of the pivot lever 35 on the traction cable 33 a uniformly distributed tensile force is effective. About the two sides of the rollers 30 guided traction cable 33 is a train in Fig. 4 upwards and exerted such that thereby the locking member 37 is pulled against the action of the spring 39 in Fig. 4 upwards, such that the locking projection 65 except Engagement with the locking groove 47 in the groove body 46 passes. By this release under the influence of the tensile force, the strut 38 pivots about the first

Pivot axis 27 in the direction of arrow 28 in the clockwise direction while the other strut 21 makes a pivotal movement about the second pivot axis 54 counterclockwise. Further, a pivoting movement about the axis of the joint 22, so that an angle between the two struts 38 and 21 is formed, which is about 0 ° when folding. The quadrangle formed by the telescopic element 53, the plate part 2, the pillar effective support 20 bishin to the second pivot axis 54 and the strut 56 applies to the telescopic element 53. The support 20 pivots about the pivot axis 61 and abuts against the plate member 2 and the telescopic member 53. The plate member 59 lays on the support 20. It then results in the folded position shown in FIG. 5, wherein the compactness is still increased by Insertion of the lower telescopic elements 48 and, if necessary, locking in the retracted position in which the cross bar 55 extends approximately in the region of the lower ends of the supports 20.

If the work table 1 to be transferred back to the working position shown in FIG. 1, the two plate parts 2, 59 are pulled apart so that they form a plane. When unfolding then unfolds each support strut 11 by pivotal movement of the strut 21, wherein the groove body 46 with the z. B. sloping ramp surface 63 runs on the ramp surface 66 of the locking projection 65. The locking member 37 is displaced upwardly against the spring 39 in Fig. 4 until the locking projection 65 engages positively in the locking groove 47 of the groove body 46 and both struts 38, 21 are aligned and locked in Fig. 4. In this locked position, the spring 39 can relax. The trusses 19 pivot about the bolt 22 as a pivot axis and ensure that the table top 5 stretches. The plate part 2 and the upper

Telescopic elements 53 of the supports 10 then form an angle of greater than 90 °.

The work table 1 is simple in construction and allows without special tools or special expertise transfer from the working position to the folding position by a single handle on the actuator 34, wherein an operator can initiate this operation from a working position out, in which the

Operator z. B. is in the region of the plate part 2, without the

To have to walk table top 5 to one of the sides. It is enough a train on

Pivoting lever 35 to initiate from the working position, the folding position and reach. Conversely, a folding in the working position shown in FIG. 1 can be achieved in a simple manner. In the collapsed folding position of FIG. 5 with the telescopic elements 48 additionally inserted in addition results in a space-saving, compact state of the work table 1, which can be well taken in this way by the operator and carried away well. In this state, the worktable 1 requires little space for its placement. The lower one

Crossbar between the telescopic elements 48 facilitates a synchronous retraction and extension of these telescopic elements 48th

Claims

ROBERT BOSCH GMBH, 70442 Stuttgart claims

1. Worktable, especially for the workshop area, with a table top (5) and it

attacking supports (10, 20), wherein the table top at least two by means of a hinge (3) about a hinge axis (4) pivotally supported plate members (2, 59), which are folded down from a working position with a substantially horizontal course in a folded position, in which the plate parts (2, 59) are aligned approximately parallel to one another, characterized in that a first plate part (59) is supported on two supports (20) pivotable about a pivot axis (61) by means of a respective obliquely extending support strut (11) each pivotally supported with one end at a transverse distance from the hinge axis (4) about a first pivot axis (27) on the first plate portion (59) and the other end about a second pivot axis (54) on the respective support (20) and from two via a joint (22) connected struts (38, 21) is formed, in the region of the joint (22) by means of a locking device (26) lockable and by means of a Ausl seeinrichtung (40) can be unlocked and can be folded after unlocking.

2. Work table according to claim 1, characterized in that the two struts (38, 21) for bringing about the folding position of the first plate member (59) about the axis of the hinge (22) towards each other and about the pivot axes (27, 54) for the first plate member (59) or towards the support (20) are folded into a folded position in which both struts (38, 21) approximately parallel to each other and to the first plate member (59) and the respective support 20) extend, and to bring about the Working position of the first plate member (59) about the axis of the joint (22) away from each other in a support position are hinged, in which both struts (38, 21) extend approximately in alignment.

3. Worktable according to claim 2, characterized in that the locking device (26) has a locking member (37) on the one hand and a latch recess (36) on the other hand, in which the locking member (37) positively engages in the support position and from which the locking member (37 ) is moved out for unlocking, wherein the locking member (37) on a strut (38) and the latch recess (36) is arranged on the other strut (21).

4. Worktable according to claim 3, characterized in that on the locking member (37), a spring (39), in particular compression spring engages, by means of which the locking member (37) in the

Lock recess (36) held and automatically reset for locking in this.

5. Worktable according to claim 3 or 4, characterized in that the locking recess (36) as a latching groove (47) in a Nutkörper (46) is formed and the groove body (46) leading to a locking groove (47), z. B. wedge-shaped or arcuate, ramp surface (63) for the locking member (37), and preferably, that the locking member (37) as a locking slide (64) with endseitigem locking projection (65) is formed, which engages positively in the locking recess (36) ,

6. Worktable according to claim 5, characterized in that the locking member (37), in particular the locking projection (65), a, z. B. wedge-shaped or arcuate, ramp surface (66) on

End on which the ramp surface (63) of the Nutkörpers (46) runs in the movement in the locked support position.

7. Worktable according to one of claims 4 to 6, characterized in that the

Triggering device (40) on each locking member (37) engaging pull cable (33) which is acted upon by means of an on the pull cable (33) actuating member (34) with a tensile force for unlocking, which counteracts the action of the spring (39) and the locking member (37) for unlocking out of engagement with the locking recess (36) pulls.

8. worktable according to claim 7, characterized in that the traction cable (33) in one

guided below the first plate member (59) extending guide (32), in the region about the first pivot axis (27) of each support strut (11) deflected towards this and guided to the locking member (37) to which the pull cable (33) is attached ,

9. Worktable according to one of claims 7 or 8, characterized in that the

Actuator (34) as preferably in a recess (45) in the first plate part (59) detectable pivot lever (35) is formed, which engages with at a distance from its pivot axis (51) befindlichem end (58) on the traction cable (33) such that a pivoting operation of the pivot lever (35) on the pull cable (33) generates a tensile force.

10. Worktable according to one of claims 1 to 9, characterized in that at least one strut (38, 21) of the respective support strut (11) is formed as a U-profile, and preferably that in the folded position of both support struts (11) has a strut (38) is received in the interior of the other strut (21).

11. Worktable according to one of claims 1 to 10, characterized in that the two on the first plate part (59) engaging supports (20) are formed as inclined legs and the other supports (10) as collapsible for shortening and the

Extension extendable telescopic elements (53, 48) are formed, which are locked together at least in the extended position.