EP1627578A2 - Fitting for mounting of pivotable folding feet - Google Patents

Abstract

The mounting for attaching a folding leg to a table comprises a rail (18) which is fastened to the table top and has a shaft (6) mounted at one end, on which the table leg (5) is pivoted. A strut (21) is attached to the leg and its opposite end slides in a slot (23) in the rail. The rail has vertical walls (24) on either side of the rail connected to outer walls (25) which are at an acute angle to these.

Description

The invention relates to a fitting for fixing pivoting folding feet of a folding table with a fastened to a table top rail which forms a bearing element in the region of one end, a pivotally mounted in the bearing element axis, which is rotatably connected to at least one leg column, and a pivotally mounted on the at least one leg column mounted strut, which carries on its side facing away from the leg column a guide pin which is displaceably mounted in a guide rail formed in the rail and can be locked in two end positions. Furthermore, the invention relates to a folding table with such a fitting.

From DE 34 25 100 C2 a folding fitting of the above type for fixing the swivel leg columns of a folding table is known, which has proven itself in practice. The rail of this known fitting is U-shaped and has with its open side to the table top. The strut is U-shaped and surrounds the rail when the leg columns are folded on the table top. The rail is designed such that the bearing element, in which the axis of the leg column is mounted, is positioned at a distance from the table top. As a result, the leg columns are not completely parallel to the table top in their folded on the table top storage position, but extend at an acute angle to this.

Object of the present invention is to develop a fitting of the type mentioned in such a way that the rigidity of the construction is increased and at the same time the weight of the fitting and its height can be reduced.

This object is achieved essentially by the fact that the rail has a first, strip-shaped region for fastening the rail to a table top, two at least approximately perpendicularly away from the first region extending second areas in which the guide slot is formed and between which with the guide pin provided end of the strut is received and has two connected to the second regions third regions which extend at an acute angle to the second region. The rail is thus U-shaped in cross-section, wherein the first region and the second regions connected thereto form a receptacle for the strut. The third areas increase the rigidity of the rail. This additional stiffening makes it possible to make the entire rail of a thinner material, for example. A thin sheet, whereby the total weight of the fitting can be reduced. The third regions may be close to the second regions or extend away from them at an angle of up to about 45 °. Since the guide slot in which slides the guide pin of the strut, is formed in the second regions of the rail, the guide pin is secured by the third portions of the rails from accidental falling out of the fitting. The reliability of the entire fitting is thereby improved.

In a development of the concept of the invention, a fourth, strip-shaped region can be provided on each of the two third regions of the rail, which region extends essentially in the plane of the first region. Through these fourth areas, the support of the fitting on the table top is further improved and the rigidity of the entire construction is increased. It is preferred if the entire rail from a single sheet metal strip is manufacturable.

When the strut is formed by a closed square profile, the stiffness of the strut is also improved over conventional open struts.

In order to reduce the height of the fitting and thus a table provided with this fitting, it is preferred if the guide slot of the rail is designed such that the at least one leg column is aligned in an end position substantially parallel to the first region of the rail. In other words, the leg column forming a folding leg can be folded in a storage state substantially flat on the table top. The space requirement of a table is thus reduced during storage. In addition, damage to the table top of a table lying on or below it can be avoided by protruding parts of the fitting.

According to a preferred embodiment of the invention, a U-shaped detent spring is provided in or on the rail for receiving and / or locking a strut with the at least one leg column connecting bearing axis. The fixation of the fitting by means of the U-shaped detent spring in the storage condition allows on the one hand to securely hold the leg column on the rail, on the other hand, the leg column can be easily manually transferred from its storage position again in its position of use, in which the leg column approximately perpendicular to the Table top sticks out.

Alternatively, at least one lateral window may be provided in the rail and the strut may comprise at least one detent element protruding therefrom, which is designed such that it can be releasably latched into the at least one window by the force of a spring. Preferably, the locking element is formed by a V-shaped spring element which is held by two protruding from windows in the strut locking lips in the strut. In this case, the locking lips of the V-shaped spring element can additionally by a tension spring arranged between these in their from the windows of the Strive outstanding position to be applied. The tension spring may also be formed as a fully-filled element made of an elastomer.

This locking element, which is particularly easy to install, snaps in the folded state of the leg column in window of the rail to lock the leg column. By pulling on the leg column, however, this locking can be easily solved again, so that the table can be set up without additional manipulation. The spring force acts more direct at this locking element, which allows a smooth, sliding detent, which works much quieter.

The guide slot can be formed by two grooves introduced in the second regions of the rail, which each have, on their side facing the bearing element, a wedge-shaped tapering groove region which extends away from the first region of the rail. This wedge-shaped groove areas thus form a locking possibility, in which the guide pin of the strut can engage in the use position of the folding table. For this purpose, a tongue spring may additionally be provided, which urges the guide pin in the wedge-shaped groove area. The wedge-shaped configuration of the groove area ensures a play-free fit of the guide pin, so that a self-adjusting cutout is formed, in which the guide pin always sits firmly and from which the guide pin is easily herausführbar again.

To attach the axis of the at least one leg column, at least one stacking trestle can additionally be provided on the fitting according to the invention, which has a bearing, which is drivingly connected to a cam by means of a toothed gear, which projects between an approximately right angle from the plane of the first region of the rail first position and a second position extending approximately parallel to this plane is pivotable about a pivot axis, wherein the cam is mounted in two arranged on the pivot axis on both sides of the cam bearings is. By this two-sided leadership of the pivotable cam of the stacking bracket, the stability is significantly improved. The bending moments acting on the pivot axis of the cam can be significantly reduced in a bearing of the cam between two bearings, so that even large loads can be absorbed by the cam without damage in the pivot axis or the bearings.

In a further development of this inventive concept, it is provided that the cam has two laterally projecting from this axle stubs, which are each mounted in one of the two bearings. The stub axles may, for example, be integrally formed with the cam, so that a connection of the cam with the pivot axis in the assembly of the stacking bracket deleted.

Alternatively, it is also possible that the cam is rotatably mounted on a shaft, which in turn is mounted in the two bearings. The cam can be held by a Vielkantabschnitt the shaft or a feather key or the like. Rotationally fixed on this. Since the cam is pivotable only in the unloaded state, when the folding feet of the folding table are freely swung, even a slight rotation of the cam on the shaft, for example. Via a press fit, may be sufficient.

In order to minimize uneven loads associated with the folding base of the folding table axis and the pivot axis of the cam further, the gear transmission preferably has a first pair of intermeshing the gears and a second pair of intermeshing gears, of which two gears rotatably with the with the Folding base of the folding table connected axis and two gears rotatably connected to the pivot axis of the cam are connected. The loads of the gears themselves can be reduced by this design of the stacking bracket, so that they are not must necessarily be formed as metal gears, but may be made of plastic, for example.

It is preferred if a gear is arranged on the pivot axis on both sides of the cam. A particularly favorable design of the stacker can be achieved in that the gears are arranged on the pivot axis in each case between the cam and one of the two bearings. Alternatively, the bearings may be disposed between the cam and one of the two gears.

If the bearing of the axis of the folding foot comprises two spaced on the axis bearing between which the gears are arranged, and the storage of the axis of at least one leg column can absorb high forces or bending moments, so that an additional separate storage for pivoting the leg column not is required.

According to a preferred embodiment, the bearing of the axis of the leg column and the bearings of the pivot axis of the cam are arranged in a gear housing receiving the housing. The bearings and the gear transmission can be safely protected in this way from dirt or damage. In addition, a possibly provided lubricant for the bearing or the gear transmission can not escape from the housing.

The assembly of the stacking bracket according to the invention can be facilitated by the fact that the housing is formed from at least two housing elements screwed together, of which at least one is attachable to the table top. The housing can be formed, for example, of two or more with each other and screwed to the table top shells or half shells, which simultaneously form bearing shells for the axis of the leg column and the pivot axis of the cam.

A low-cost production of the stacking jaw with high quality can be achieved in that the cam and / or the bearings are wholly or partly made of plastic. In this case, a cover can be placed on the cam whose size is chosen so that the cover protrudes beyond the folded folding feet and a possibly provided frame when the cam extends away from the table top. The cover can be subsequently connected to the cam, so that the function of the stacker can be ensured at different table sizes by selecting the cover.

Furthermore, the present invention relates to a folding table with a table top and pivoting folding feet, which are fixable by means of the above-described fitting in a substantially flat resting on the table top storage position and a substantially perpendicular projecting away from the table top position of use.

Further developments, advantages and applications of the invention will become apparent from the following description of exemplary embodiments and the drawings. All described and / or illustrated features alone or in any combination form the subject matter of the invention, regardless of their combination in the claims or their dependency.

Fig. 1

in Perspektivansicht einen an einem Klapptisch befestigten Stapelbock gemäß der vorliegenden Erfindung,

Fig. 2

in vergrößerter Perspektivansicht das Zahnradgetriebe des Stapelbockes nach Fig. 1,

Fig. 3

in vergrößerter Perspektivansicht den Stapelbock nach Fig. 1,

Fig. 4

in Perspektivansicht den erfindungsgemäßen Beschlag in seiner Benutzungsposition,

Fig. 5

in Perspektivansicht den Beschlag nach Fig. 4 in seiner Lagerposition,

Fig. 6

in Perspektivansicht die Schiene des Beschlages nach Fig. 4,

Fig. 7

die Arretierung der Strebe des Beschlages nach einer ersten Ausführungsform,

Fig. 8

die Arretierung der Strebe des Beschlages nach einer zweiten Ausführungsform,

Fig. 9

in Perspektivansicht das Rastelement aus Fig. 8 und

Fig. 10

in Perspektivansicht die Spannfeder aus Fig. 8.

They show schematically:

Fig. 1

3 is a perspective view of a stacker mounted on a folding table according to the present invention;

Fig. 2

in enlarged perspective view of the gear transmission of the stacking bracket of FIG. 1,

Fig. 3

in an enlarged perspective view of the stacking trestle according to FIG. 1,

Fig. 4

in perspective view of the fitting according to the invention in its position of use,

Fig. 5

in perspective view of the fitting of Figure 4 in its storage position,

Fig. 6

in perspective view of the rail of the fitting according to Fig. 4,

Fig. 7

the locking of the strut of the fitting according to a first embodiment,

Fig. 8

the locking of the strut of the fitting according to a second embodiment,

Fig. 9

in perspective view of the locking element of Fig. 8 and

Fig. 10

in perspective view, the tension spring of Fig. 8.

On the folding table 1 shown in detail in FIG. 1, a stacking trestle 3 is fastened in the vicinity of a corner of the table top 2. Next, on the side shown in Fig. 1 of the table top 2, which forms the bottom in the use state of the folding table 1, arranged a hinged fitting 4, with which a only partially shown folding base 5 in a substantially parallel to the table top 2 aligned position and a essentially vertical can be locked by the table 2 protruding position. The folding foot 5 is pivotally mounted on an axis 6, which opens into the stacker 3.

The stacker 3 has a housing 7, of which in Fig. 2, only a bottom plate and a perpendicular thereto side wall 8a is shown. Bearings 9a and 9b are formed by bearing shells in the side wall 8a and in the side wall 8b parallel thereto, in which bearing areas of the axle 6 are rotatably mounted. Furthermore, further bearing shells are respectively provided in the housing 7 in the side walls 8a and 8b, in which bearing portions are mounted for the formation of further bearings 10a and 10b, which are respectively provided on a stub axle 11a and 11b. The stub axles 11a and 11b are integrally formed with a cam 12 which is supported by the axle stub pivotally in the housing 7. The cam 12 is positioned in the middle between the two storage areas.

On the axis 6 of the folding foot 5, two spaced-apart and adjacent to the bearing areas arranged gears 13a and 13b are rotatably provided. The gears 13a, 13b mesh with gears 14a and 14b, which are provided on the axle stubs 11a, 11b between each of the bearing areas and the cam 12. The toothed wheels 14a and 14b, as shown in FIG. 2, can be provided with teeth only in an area, for example a region extending over approximately 180 °, which engage with those of the toothed wheels 13a or 13b.

On the cam 12, a cam cover 15 can be placed and connected to this example. Via a latch. The cam cover 15 carries at its end a protective layer 16, which may for example consist of felt or rubber. The length of the cam cover is dimensioned such that the cam 12 with its cam cover 15 in the position shown in FIGS. 1 and 3 away from the table top 2 position at least with its protective layer 16 protrudes over a provided on the side edges of the table top 2 circumferential frame 17.

In the following, the function of the stacker 3 described above will be explained in more detail. When the hinged foot 5 of the folding table 1 is pivoted into its substantially perpendicular to the table 2 protruding position, the cam 12 of the stacking bracket 3 extends substantially parallel to the table top 2. The cam 12 and the cam cover 15 thus do not penetrate into the Knee space below the peripheral frame 17 of the folding table 1, so that there is no risk of bumping with his knees or thighs when sitting down or getting up or when the legs on the cam.

For transport or storage of the folding table 1, the folding feet 5 are pivoted from their projecting from the table top 2 position in a position shown in FIG. 2, in which the folding feet 5 extend approximately parallel to the table top 2. By the engagement of the gears 13a, 13b of the rotatably connected to the folding base 5 axis 6 in the gears 14a, 14b of the associated with these cam 12 is pivoted from its position shown in Fig. 2 in the position shown in Figs. 1 and 3 in which the cam 12 projects with the cam cover 15 substantially perpendicularly from the table top 2.

Since by appropriate choice of the length of the cam cover 15 in this position, at least the protective layer 16 protrudes beyond the peripheral frame 17, the table top of another folding table can be placed on the provided at all four corners of the folding table 1 stacking trestle 3 without them with the folding base 5 or the circumferential frame 17 comes into contact. Through the protective layer 16, the table top of the overlying table is also protected from damage, such as scratches or the like.

When the folding foot 5 is raised again, the cam 12 of the stacking bracket 3 is pivoted back into the position shown in FIG. 2 by the engagement of the gear pairs 13a, 14a and 13b, 14b.

The cam 12 with the stub axles and gears, the cam cover 15, the housing 7 and / or the gears 13a, 13b may be made of a preferably impact-resistant plastic. For ease of assembly, the housing 7 may, for example, be split into two parts in an approximately parallel plane to the table top 2, wherein the housing elements can be fastened to each other and to the table top 2, for example by screwing.

As can be seen from FIGS. 4 to 7, the fitting 4 has a rail 18 which forms a bearing element 19 for the axis 6 of the leg column 5 at one end. On the leg column 5, a strut 21 is articulated pivotably about a bearing axis 20, which carries a guide pin 22 on its side facing away from the leg column.

From the sectional view of Fig. 6 it can be seen that the rail 18 is formed of a one-piece sheet metal strip. The rail 18 rests with a first, strip-shaped region 23 on the table top 2 and is fixed thereto. Of the first region 23, a second region 24 extends on both sides substantially at a right angle away from the table top 2, which together with the first region 23 forms a U-shaped receptacle in which the end of the strut 21 facing away from the leg column 5 can slide , On the side of the second regions 24 facing away from the first region 23, the material is folded over and extends at an acute angle, which may be less than approximately 45 °, to the second regions 24 with third regions 25 in the direction of the tabletop 2.

The two second and third areas thus form a double-walled structure with high rigidity for guiding the strut 21. On its side facing the table top 2, the third areas 25 are angled and lie with fourth areas 26 on the table top 2. The bearing element 19 facing away from the end of the rail 18 may be covered by a cap, which, for example, consists of plastic.

In the second regions 24 of the rail 18, a guide slot formed by grooves 27 is provided, in which the guide pin 22 of the strut 21 slides. At its end facing the leg column 5 each of the two grooves 27 is provided with a wedge-shaped tapered groove portion 28, which branches off from the table plate 2 facing away from the grooves 27. The two wedge-shaped tapered groove regions 28 are positioned on the rail 18 such that the guide pin 22 of the strut 21 engages in these groove regions by the pressure of a tongue spring 29 when the leg column 5 extends in its substantially right-angled away from the table top 2 Use position is located.

Further, in the rail 18 in the second and third regions 24 and 25, a recess for forming a U-shaped detent spring 30 is provided, into which the bearing axis 20 can engage when the leg column 5 aligned in their substantially parallel to the table top 2 Storage position is pivoted. In this position, the folding leg formed by the leg column 5 is locked in such a way that it can not swing back automatically from the storage position, but with little manual force in the use position shown in Fig. 4 can be transferred.

The U-shaped detent spring 30 may also be omitted. Thus, a second embodiment is shown in Figures 8 to 10, in which the strut 21 by means of a latching element which is formed by a V-shaped spring element 31, on the Rail 18 is lockable. For this purpose, lateral windows are provided in the rail 18, in which locking lips 32 of the V-shaped spring element 31 can engage. The V-shaped spring element 31 is received in the strut 21 such that the locking lips 32 protrude from windows 33 of the strut 21. For this purpose, a tension spring 34 is additionally provided, which acts on the locking lips 32 in their protruding from the windows 33 of the strut 21 position.

This locking element 31 is particularly easy to install, since it only needs to be inserted into the strut 21. Since the tension spring 34 acts directly on the locking lips 32, a gentle and quiet detent is possible.

In the folded state of the leg column 5, the locking lips 32 snap into the window 18 of the rail 18 to lock the leg column 5. By pulling on the leg column 5, the locking lips 32 against the force of the tension spring 34 back so that the latch can be easily solved again.

In order to hold the tension spring 34 securely in the V-shaped spring element 31, the inside thereof is provided with depressions in which the spring arms of the tension spring 34 can anchor. Falling out of the tension spring 34 is thereby avoided. Notwithstanding the illustration of Figures 8, 9 and 10, the tension spring 34 may also be a fully-filled rubber and / or Elastomerbauteil. If necessary, the tension spring 34 can also be formed in one piece with the spring element 31.

LIST OF REFERENCE NUMBERS

1

folding table

2

tabletop

3

A stack support

4

folding mechanism

5

Leg column (folding foot)

6

axis

7

casing

8a, 8b

Sidewall of the housing

9a, 9b

camp

10a, 10b

camp

11a, 11b

stub axle

12

cam

13a, 13b

gear

14a 14b

gear

15

cam cover

16

protective layer

17

circumferential frame

18

rail

19

bearing element

20

bearing axle

21

strut

22

guide pins

23

first area of the rail

24

second areas of the rail

25

third areas of the rail

26

fourth areas of the rail

27

Groove (guiding link)

28

groove region

29

latch spring

30

U-shaped detent spring

31

V-shaped spring element

32

Rest lips

33

window

34

tension spring

Claims (14)

Fitting for fixing pivoting folding feet of a folding table with a on a table top (2) fastened rail (18) which forms in the region of one end a bearing element (19), in the bearing element (19) pivotally mounted axis (6) rotatably with at least one leg column (5) is connected, and a pivotally mounted on the at least one leg column (5) strut (21) on its side facing away from the leg column (5) carries a guide pin (22) in a in the rail ( 18) formed guide slot (27) slidably mounted and is lockable in two end positions, characterized in that the rail (18) has a first, strip-shaped region (23) for fastening the rail (18) on a table top (2), at least two approximately perpendicularly away from the first region (23) extending second regions (24) in which the guide slot (27) is formed and between which the guide pin (22) provided with the end the strut (21) is received and has two third regions (25) connected to the second regions (24) and extending at an acute angle to the second regions (24). Fitting according to claim 1, characterized in that at the two third regions (25) of the rail (18) in each case a fourth, strip-shaped region (26) is provided, which extends substantially in the plane of the first region (23). Fitting according to one of claims 1 or 2, characterized in that the strut (21) is formed by a closed square profile. Fitting according to one of claims 1 to 3, characterized in that the guide slot (27) of the rail (18) is formed such that the at least one leg column (5) in an end position substantially parallel to the first region (23) of the rail (18) is aligned. Fitting according to one of claims 1 to 4, characterized in that in or on the rail (18) has a U-shaped detent spring (30) for receiving and / or locking a strut (21) with the at least one leg column (5) connecting Bearing axis (20) is provided. Fitting according to one of Claims 1 to 4, characterized in that at least one lateral window is provided in the rail (18) and the strut (21) has at least one latching element (31) protruding therefrom, which is configured such that it passes through the force of a spring (34) in the at least one window is releasably latched. Fitting according to claim 6, characterized in that the latching element is formed by a V-shaped spring element (31) which is held by two of windows (33) in the strut (21) outstanding locking lips (32) in the strut (21) , Fitting according to claim 7, characterized in that the locking lips (32) of the V-shaped spring element (31) are additionally acted upon by a tension spring (34) arranged between them in their protruding from the windows (33) of the strut (21) position. Fitting according to one of claims 1 to 8, characterized in that the guide slot (27) by two in the second regions (24) of the rail (18) introduced grooves is formed on its the bearing element (19) side facing each one wedge-shaped tapered groove area (28) extending away from the first portion (23) of the rail (18). Fitting according to one of claims 1 to 9, characterized in that the axis (6) of the at least one leg column (5) is additionally mounted in at least one stacking bracket (3) having a bearing (9a, 9b) by means of a gear transmission (13a, 13b, 14a, 14b) is drivingly connected to a cam (12) which extends between a first position projecting approximately at right angles from the plane of the first region (23) of the rail (18) and extending approximately parallel to this plane second position about a pivot axis is pivotable, wherein the cam (12) in two on the pivot axis on both sides of the cam (12) arranged bearings (10a, 10b) is mounted. Fitting according to claim 10, characterized in that the gear transmission (13a, 13b, 14a, 14b) has a first pair of meshing gears (13a, 14a) and a second pair of meshing gears (13b, 14b), of which two gears (13a, 13b) rotatably connected to the axis (6) of the at least one leg column (5) and two gears (14a, 14b) rotatably connected to the pivot axis of the cam (12). Fitting according to claim 10 or 11, characterized in that on the pivot axis on both sides of the cam (12) each have a gear (14a, 14b) is arranged, and that the gears (14a, 14b) on the pivot axis in each case between the cam ( 12) and one of the two bearings (10a, 10b) are arranged. Fitting according to one of claims 10 to 12, characterized in that the bearing (9a, 9b) of the axis (6) of the leg column (5) two on the Axially spaced bearing comprises (9a, 9b), between which the gears (13a, 13b) of the gear transmission are arranged. Folding table with a table top (2) and pivoting folding feet (5) by means of a fitting (4) according to one of the preceding claims in a substantially flat resting on the table top (2) storage position and a substantially perpendicular of the table top (2 ) can be fixed in the projecting use position.

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