EP2460965B1 - Braked bearing and item of furniture, in particular fold-up table - Google Patents

Description

TECHNICAL AREA

The invention relates to a braked bearing, in particular for a piece of furniture, and a piece of furniture, in particular a folding table.

STATE OF THE ART

The German Utility Model DE 20 2009 015 725 U1 describes a hinge with two telescoping sleeve-like hinge elements, wherein the inwardly running hinge element has a cut, resilient sleeve wall portion, which is provided with an outside protruding brake or locking element.

Braked bearings for damping a pivoting or rotary movement between two components are also known internally to the Applicant. Such a braked bearing has, for example, a bush which rotatably receives a journal. The diameter of the pin is dimensioned such that it is in frictional contact with the socket. During a rotary movement of the pin in the bush, this is braked due to the friction.

In the approach described above, it has proved to be disadvantageous that the generated friction and thus also the corresponding braking force, which act on the pin when turning thereof, are constant. This is just in view of a table top of a folding table, which pivoted from its vertical position to its horizontal position and is to be braked, unfavorable. Because here is to the end of the pivotal movement of the table top maximum braking effect can be achieved to ensure the most noiseless attack the table top on a table frame of the folding table.

PRESENTATION OF THE INVENTION

This object is achieved by a braked bearing with the features of claim 1 and by a piece of furniture with the features of claim 6.

Accordingly, it is provided:

A braked bearing, in particular for a piece of furniture, having the features of patent claim 1.

Furthermore, a piece of furniture, in particular a folding table, which has the bearing according to the invention.

The idea underlying the present invention is to provide a compressible brake element which is non-rotatably connected to a pin of the bearing, wherein the pin and a bush of the bearing a first position in which the brake element is substantially relaxed, and a second position have to each other, in which the brake element is substantially compressed against the socket for generating a frictional force is applied. Thus, the braking force generated by the bearing or the braking torque generated is not constant, but depending on the position of the pin and the sleeve to each other. This makes it possible that in a folding table, which has the bearing, the table top gently and thus quietly against a stop on a table frame the folding table strikes when the table top reaches its horizontal position.

From the dependent claims, advantageous embodiments of the present invention.

From "substantially relaxed" should also include a state of the brake element, in which this rests against the bush, but does not generate significant frictional force. Furthermore, a state of the brake element is to be encompassed by "substantially compressed" in which this is only partially compressed, but generates a significant frictional force.

According to one embodiment of the bearing according to the invention, the pin has a recess on its periphery, which receives the brake element. Thereby, the brake element can be easily and at least positively held on the pin to provide the rotationally fixed connection between the brake element and the pin.

According to a further embodiment of the bearing according to the invention, the recess extends along the central axis of the pin in this. As a result, a comparatively large contact area between the brake element and the bushing can be provided. This in turn has a positive effect on the generated frictional force or the braking torque that can be generated by the bearing.

According to the bearing according to the invention, the recess is formed as a relative to the central axis of the pin eccentric bore. Such a recess can be easily generated. According to the bearing according to the invention, the bushing has a recess in which the Brake element is arranged in the first position. The recess thus gives the brake element space so that it can relax.

According to the bearing according to the invention, the bushing has a sliding surface which adjoins the recess and supports the journal, wherein the braking element in the second position is compressed against the sliding surface. If the brake element moves along the sliding surface into the recess (by turning the pin and the bushing relative to each other between their first and second position), the frictional force changes from maximum (braking element in contact with the sliding surface) to minimum or zero ( Brake element is relaxed and arranged in the recess).

According to a further embodiment of the bearing according to the invention, the sliding surface and the recess formed as seen along the central axis of the pin in about a pear shape. The shape of the pear can be geometrically described as follows: The sliding surface, as viewed along the central axis of the peg, has a first pitch circle shape with a first diameter. The recess has, seen in the longitudinal direction of the pin, a second partial circular shape with a second diameter. The first and the second pitch circle each at their ends by means of a rounded transition to each other. The second diameter is formed smaller than the first diameter.

According to a further embodiment of the bearing according to the invention, the brake element is designed as a solid cylinder and / or polyurethane. Such a braking element is easy to manufacture and install. In addition, such a braking element generates the desired frictional force and thus the desired braking torque.

According to one embodiment of the folding table according to the invention a table top is pivotally mounted by means of at least one bearing on a table frame between a vertical position and a horizontal position thereof, wherein the pin and the socket in the vertical position of the table top in its first position and in the horizontal position of the table top in its second position to each other, so that a pivoting of the table top is braked from its vertical position to its horizontal position. This can be achieved that the table top passes almost noiselessly in its horizontal position.

CONTENT OF THE DRAWING

The invention will be described in more detail with reference to the embodiments specified in the figures of the drawing.

Fig. 1

in einer perspektivischen Ansicht und lediglich teilweise einen Klapptisch gemäß einem Ausführungsbeispiel der vorliegenden Erfindung;

Fig. 2

eine Explosionsansicht A aus Figur 1, wobei das erfindungsgemäße Lager samt weiterer Komponenten des Klapptisches zu sehen sind;

Fig. 3

eine Ansicht B aus Figur 2 von schräg unten;

Fig. 4

das Lager aus Figur 2 in einer Schnittansicht C-C aus Figur 5, wobei eine Tischplatte des Klapptisches in ihrer horizontalen Stellung angeordnet ist;

Fig. 5

einen Schnitt D-D aus Figur 4; und

Fig. 6

die Ansicht aus Figur 4, wobei die Tischplatte des Klapptisches in ihrer vertikalen Stellung angeordnet ist.

Show it:

Fig. 1

in a perspective view and only partially a folding table according to an embodiment of the present invention;

Fig. 2

an exploded view A from FIG. 1 , wherein the bearing according to the invention can be seen together with other components of the folding table;

Fig. 3

a view B from FIG. 2 from diagonally below;

Fig. 4

the camp out FIG. 2 in a sectional view CC FIG. 5 wherein a table top of the folding table is arranged in its horizontal position;

Fig. 5

a cut DD off FIG. 4 ; and

Fig. 6

the view FIG. 4 , wherein the table top of the folding table is arranged in its vertical position.

In all figures of the drawing, identical or functionally identical elements - unless otherwise indicated - have been given the same reference numerals.

DESCRIPTION OF EMBODIMENTS

FIG. 1 shows in perspective a folding table 1 according to an embodiment of the present invention. The folding table 1 is formed symmetrically with respect to a symmetry line 2.

The folding table 1 has a table top 3 and a table frame 4. The table top 3 is hinged to the table frame 4 by means of two bearings 5 pivotally. The left bearing 5 is in FIG. 1 partly to see and in the Figures 2-6 shown in more detail. The right bearing 5 is outside the range shown and is identical to the left bearing 5 constructed.

In the FIG. 1 illustrated position of the table top 3 corresponds to an intermediate position thereof between its vertical position and its horizontal position. On the other hand shows FIG. 4 the tabletop 3 in its horizontal position while FIG. 6 shows the table top 3 in its vertical position.

The bearing 5 brakes a pivoting of the table top 3, if this, as indicated by the arrow in FIG. 1 indicated, off its horizontal position is pivoted into its vertical adjustment in order to provide a stop of the table top 3 on the table frame 4 as quiet as possible. The pivoting of the table top 3 from its horizontal to its vertical position is merely triggered by an operator, whereupon the table top 3 pivots independently under the action of gravity from its then slightly deflected position in its horizontal position.

FIG. 2 shows an exploded view A from FIG. 1 ,

On the table frame 4, in particular a corner connector 6 for connecting horizontal profiles 7 (see also Fig. 1 ) with vertical profiles 8 of the table frame 4, a pin 12 of the bearing 5 is mounted, in particular integrally formed. The bearing 5 further comprises a bushing 13 which is fixedly attached to the table top 3. For example, the bush 13 may be integrated in a support profile 14 of the table top 3. By "integrated" is meant here that the bushing 13 hineinerstreckt into the support section 14. The sleeve 13 receives the pin 12 rotatably mounted, as shown by the Figures 4-6 can be seen.

The bearing 5 also has an elastically compressible brake element 15. The brake element 15 is formed for example as a solid cylinder made of polyurethane. The brake element 15 is rotatably connected to the pin 12.

FIG. 3 shows a view B FIG. 2 from diagonally below.

Based on FIG. 3 can be seen that the pin 12 has a recess 16 on its underside (facing the ground). The recess 16 receives the brake element 15, the latter in Fig. 3 not shown. The recess 16 extends along a pin central axis 17.

The recess 16 is formed as a bore. The bore 16 is seen along the pin central axis 17 eccentrically with respect to this arranged. This results in a substantially crescent-shaped cross section 21 for the pin 12. If the brake element 15 is thus arranged in the recess 16, so this extends radially, that is perpendicular to the pin central axis 17, beyond the circumference 22 of the pin 12 addition.

FIG. 4 shows the bearing 5 FIG. 2 together with the other components shown there in the assembled state in a sectional view CC FIG. 5. FIG. 5 again shows a sectional view DD FIG. 4 ,

In the Figures 2 and 4 the design of the socket 13 can be seen. The bush 13 has a recess 23, which adjoins a sliding surface 24 of the bushing 13. The recess 23 serves to receive the brake element 15, as will be explained in more detail below, while the sliding surface 24 surrounds the pin 12, so that the table top 3 is rotatably mounted on this. The recess 23 and the sliding surface 24 form seen along the pin central axis 17, see FIG. 4 , in about a pear shape.

FIG. 6 corresponds to the illustration FIG. 4 However, the tabletop is in FIG. 6 arranged in their vertical position.

The pin 12 and the sleeve 13 have a first position to each other, in which the brake element 15 is relaxed. In this first position, the brake element 15 engages in the recess 23 or is opposite this, so that the brake member 15 can expand substantially at will. This first position of the pin 12 and the sleeve 13 corresponds to the vertical position of the table top third

If the table top 3 is now from the operator person from her in FIG. 6 shown slightly deflected, so gravity causes a torque to the pin central axis 17 is generated. This torque causes the sliding surface 24 to increasingly come into contact with the brake member 15, whereby the brake member 15 is increasingly compressed. From this compression results in a frictional force between the friction element 15 and the sleeve 13 and the inner surface 25, see FIG. 6 , The frictional force in turn requires a counteracting the force of gravity about the pivot axis 17, so that the pivotal movement of the table top 3 is braked from its vertical position to its horizontal position. In the horizontal position of the table top 3, see Fig. 4 , The pin 12 and the sleeve 13 are in a second position to each other, in which the brake element 15 is compressed against the bush 13 and its inner surface 25 abuts. In the horizontal position of the table top 3, the frictional force generated by the brake element 15 is maximum, so that the table top 3 almost noiseless against stops 26, see FIGS. 1 and 2 , the table base 4 strikes.

Although the invention has been described herein with reference to preferred embodiments, it is by no means limited thereto, but modifiable in many ways. In particular, it should be noted that "a" in this case excludes no variety.

Of course, the bearing does not need to rotatably connect two components of a folding table together. Rather, the bearing can connect any components of a piece of furniture rotatably with each other.

LIST OF REFERENCE NUMBERS

1

folding table

2

axis of symmetry

3

tabletop

4

table support

5

camp

6

Corner connector

7

profile

8th

profile

12

tap

13

Rifle

14

support section

15

braking element

16

recess

17

pin central axis

21

cross-section

22

scope

23

recess

24

sliding surface

25

palm

26

attack

Claims (7)

1. Braked bearing (5), in particular for a piece of furniture (1),

   - comprising a journal (12);

   - comprising a socket (13) which receives the journal (12) in a rotatably mounted manner; and

   - comprising a resiliently compressible braking element (15), which is formed for example of polyurethane and which is rotationally engaged with the journal (12);

   - wherein the journal (12) and the socket (13), with respect to one another, have a first position, in which the braking element (15), which is arranged in a recess (23) of the socket (13), is substantially relaxed, and a second position, in which the braking element (15) is positioned substantially compressed against a sliding face of the socket (13) so as to produce a frictional force

   - wherein the journal (12) comprises on the periphery (22) thereof a recess (16), which receives the braking element (15), extends in the journal (12) along the central axis (17) thereof, and is in the form of a hole which is eccentric with respect to the central axis (17) of the journal (12).
2. Bearing according to any one of the preceding claims, characterised in that the socket (13) comprises a recess (23) in which the braking element (15) is arranged in the first position.
3. Bearing according to claim 2, characterised in that the socket (13) comprises a sliding face (24) which follows on from the recess (23) and encloses the journal (12) so as to mount it, the braking element (15) being positioned compressed against the sliding face (24) in the second position.
4. Bearing according to claim 3, characterised in that the sliding face (24) and the recess (23) approximately form a pear shape as seen along the central axis (17) of the journal (12).
5. Bearing according to any one of the preceding claims, characterised in that the braking element (15) is in the form of a complete cylinder and/or is formed from polyurethane.
6. Piece of furniture (1), in particular a folding table, comprising at least one bearing (5) according to any one of the preceding claims.
7. Folding table according to claim 6, characterised in that, by means of the at least one bearing (5), a table top (3) is attached to a table frame (2) so as to be mounted pivotably between a vertical position and a horizontal position thereof, the journal (12) and the socket (13), with respect to one another, being in the first position thereof in the vertical position of the table top (3) and in the second position thereof in the horizontal position of the table top (3), in such a way that pivoting of the table top (3) from the vertical position thereof into the horizontal position thereof is braked.

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