CN111955990A

CN111955990A - Rotary fitting and piece of furniture

Info

Publication number: CN111955990A
Application number: CN202010419597.9A
Authority: CN
Inventors: S·格拉斯沃尔
Original assignee: Hettich Franke & CoKg GmbH
Current assignee: Hettich Franke & CoKg GmbH; Hettich Franke GmbH and Co KG
Priority date: 2019-05-20
Filing date: 2020-05-18
Publication date: 2020-11-20
Also published as: DE102019113246A1; EP3741255A1

Abstract

The invention relates to a rotary fitting (1), in particular for an adjustment part (82) on a piece of furniture (8), the rotary fitting (1) comprising: a first lever (2) rotatably mounted on the bearing shaft (6); a fixing mechanism (7), by means of which the rod (2) can be fixed in different angular positions within a predetermined angle (a) relative to the bearing shaft (6); a spring (4) for transmitting torque between the lever (2) and the bearing shaft (6), wherein a first end (41) of the spring (4) is coupled to the lever (2) and a second end (42) of the spring (4) is non-rotatably coupled with the bearing shaft (6). The invention further relates to a piece of furniture (8) having such a rotary fitting (1).

Description

Rotary fitting and piece of furniture

Technical Field

The invention relates to a rotary fitting, in particular for an adjusting part on a piece of furniture, and to a piece of furniture.

Background

Such swivel fittings are used in furniture, in particular upholstered furniture, such as sofas, armchairs or beds, in order to be able to swivel different adjusting parts, such as armrests, headrests or the like, relative to the furniture body. Such rotary fittings usually have a locking or latching mechanism which allows to fix such rotary fittings in an intermediate state.

Depending on the arrangement of the rotary fitting on the piece of furniture, it may happen that the thickness of the adjusting part and/or of the lining of the furniture body exerts an undesired torque on the rotary fitting due to the abutment of the adjusting part on the other part of the piece of furniture, whereby the rotary fitting reaches an undesired intermediate position and is latched or locked in this intermediate position by tensioning of the lining to a limited extent.

In order to solve this problem, it is known from DE 102012100443B 3 to use a spring in the cap of the lever head of the first or second lever, which spring transmits a force to one of the levers.

A first end of the spring is supported in a side of the cover, which in turn is non-rotatably coupled to the first lever, while a second end of the spring is non-rotatably coupled to the second lever.

The problem is that in some swivel fittings only a single swivel lever is provided, while the adjusting part of the furniture to be swiveled relative to the swivel lever is connected to the bearing shaft, in which case one end of the spring has to be supported on the adjusting part of the furniture, which makes assembly very time-consuming.

Disclosure of Invention

The object of the invention is to further develop a swivel fitting of the generic type such that no second rod is required for supporting the spring.

This object is achieved by a swivel fitting having the features of the invention.

This object is further achieved by a piece of furniture having the features according to the invention.

The swivel fitting according to the invention has a first lever which is rotatably mounted on a bearing shaft.

The swivel fitting also has a fixing mechanism with which the lever can be fixed in different angular positions within a predetermined angle relative to the bearing shaft.

The swivel fitting also has a spring for transmitting torque to the lever.

Wherein a first end of the spring is non-rotatably coupled to a lever and a second end of the spring is non-rotatably coupled to the bearing shaft.

By means of a swivel fitting designed in this way, it can be designed with one or two levers, since the spring is coupled on the one hand to one lever and on the other hand to the bearing shaft.

Coupling with the second rod or a separate furniture element can thereby be avoided.

Advantageous embodiments of the invention are the subject matter of the dependent claims.

According to an advantageous variant of the invention, a support element projects from the side of the first rod facing the spring, the first end of said spring being coupled to the support element.

According to a variant, the support element can be designed as a pin projecting in the direction of said spring.

It is also conceivable to design the support element as a part of the head of the shaft projecting in the direction of said spring. This portion may be bent out of the material of the head or integrally formed on the head.

It is also conceivable to additionally use components already present on the rotary fitting as support elements.

In particular, the support element is designed as an end of the fastening bolt of the latching claw, which is rotatably mounted on the first lever, of the fastening mechanism that projects in the spring direction. The latching pawl engages with a tooth of the bearing shaft in the latched position of the rotary fitting for non-rotatably fixing the second lever or the furniture part rotatable relative to the first lever.

According to a further embodiment variant, the bearing shaft has a central opening in which a bolt is accommodated.

The second end of the spring is preferably designed as a polygonal receptacle.

According to an advantageous further development of the invention, the bolt has a first neck, which is designed as a polygon and is received in a non-rotatable manner in a second end of the spring, which is designed as a polygon.

According to an advantageous further development, the bolt has a second neck, which is polygonal in design and is non-rotatably received in a central opening of the bearing shaft, which is polygonal in design. The second end of the spring is thus non-rotatably coupled to the bearing shaft in a simple manner by means of a bolt.

According to a further embodiment variant, a polygon is formed on the bearing shaft on the extension of the central opening and is accommodated in a non-rotatable manner in a second end of the spring, which is designed as a polygonal accommodation.

This also provides in a simple manner a non-rotatable coupling of the second end of the spring to the bearing shaft.

In an advantageous development of this embodiment variant, the bolt has a cylindrical neck which is accommodated in a cylindrical central opening of the bearing shaft and serves in this case only for axially fixing the spring on the rotary fitting.

The piece of furniture according to the invention has a body and an adjusting part which is held rotatably on the body, which is distinguished in that the adjusting part is fixed to the body by means of at least one swivel fitting as described above.

Drawings

Preferred exemplary embodiments are explained in more detail below with reference to the drawings. In which it is shown that:

figure 1 shows a schematic perspective exploded view of a first embodiment variant of a swivel fitting according to the invention with a first rod and a second rod,

fig. 2 shows a top view of the first rod, with the cover of the rod head omitted to show a part of the bearing shaft and the fixing mechanism,

figure 3 shows a side sectional view of the swivel fitting according to figure 1,

figure 4 shows a perspective view of a variant of the spring and of the bolt axially fixing the spring on the first rod,

fig. 5 shows a perspective exploded view of a second embodiment variant of the swivel fitting according to the invention, corresponding to fig. 1, with an alternative design of the bolt and the bearing shaft,

figure 6 shows a cross-sectional view of the swivel fitting according to figure 5 corresponding to figure 3,

figure 7 shows a perspective view of another embodiment variant of the swivel fitting according to the invention with only one rod,

figure 8 shows a representation of the swivel fitting according to figure 7 corresponding to figure 6,

figure 9 shows a perspective exploded view of a further alternative embodiment variant of the swivel fitting according to the invention with two rods corresponding to figure 1,

fig. 10 shows a top view of the swivel fitting according to fig. 9, with a spring mounted,

figure 11 shows a perspective exploded view of a further alternative embodiment variant of the swivel fitting according to the invention with two rods corresponding to figure 1,

figure 12 shows a side sectional view of the swivel fitting according to figure 11 corresponding to figure 3,

figures 13 and 14 show views of another embodiment variant of the swivel fitting according to the invention with only one rod, corresponding to figures 11 and 12, respectively, and

fig. 15 is a perspective view of a piece of furniture.

Detailed Description

In the following description of the figures, terms such as top, bottom, left side, right side, front, rear, etc. relate specifically to the exemplary descriptions and positions of the rotating fitting, first rod, bearing shaft, securing mechanism, spring, etc. selected in the various figures. These terms should not be construed as limiting, i.e., they may vary due to different operating conditions or mirror symmetric designs, etc.

In the figures, reference numeral 1 denotes an embodiment variant of a rotary fitting according to the invention. All embodiment variants of such a rotary fitting 1 are used in particular for adjusting parts 82 with respect to a furniture body 81 of a piece of furniture 8 as shown by way of example in fig. 15.

Although the embodiment variants of the swivel fitting 1 shown in fig. 1 to 6 and 9 to 12 have the

levers

2 and 3 rotatable relative to one another, the embodiment variants of the swivel fitting 1 shown in fig. 7 and 8, 13 and 14 are equipped with only one lever 2.

In all embodiment variants, the lever arm 21 of the first lever 2 (and the lever arm 31 of the second lever 3, if present) has a plurality of holes through which screws are passed for fastening the

levers

2, 3 to relatively rotatable parts of the furniture 8.

In all the embodiment variants shown, the first shaft 2 is formed in two layers, wherein the fixing means 7, for example in the form of a latching mechanism, are accommodated between the head 22 of the first shaft 2 which are bent apart from one another.

In such applications, embodiments without such a securing mechanism are also possible. Embodiments with a single layer of the first bars 2 are also conceivable.

The first variant of the swivel fitting 1 according to the invention shown in fig. 1 to 4 has, in addition to the first lever 2, a second lever 3, a spring 4, the spring 4 preferably being in the form of a helical spring, the spring 4 being arranged by means of a bolt 5 on the side of the head 22 of the first lever 2 facing away from the second lever 3.

The bolt 5 has a head 54, which head 54 bears against the outer side of the spring 4 facing away from the first lever 2. In the exemplary embodiment shown here, the bolt neck comprises a cylindrical neck 51 and two

neck portions

52, 53 which are designed in a polygonal manner and which, in the assembled state, pass through the second end 42 of the spring, which is designed as a polygonal receptacle, the opening 63 of the bearing shaft 6 and the opening in the washer 12, wherein the bolt 5 and the washer 12 axially fix the components of the swivel fitting 1 to the first lever 2 and the rotational axis D of the bearing shaft 6. The head 54 of the bolt 5 covers at least the second end 42 of the spring 4, which is designed as a polygonal accommodation.

The bearing shaft 6, which is partially housed in the head 22, has a first radial tooth 61 for non-rotatably fixing in the toothing 32 of the second shaft 3 and a second radial tooth 62 housed inside the head 22 and coupled to the fixing means 7.

The fixing means 7 are used to fix the first lever 2 in different angular positions within a predetermined angle alpha with respect to the bearing shaft 6.

For a more detailed description of such a fixing mechanism 7 designed as a ratchet mechanism, reference is made here to DE 102017110247 a 1.

Other configurations of such a fixing mechanism 7 are also contemplated. Instead of the radial teeth 61, axial teeth can also be used as form-fitting elements that can be engaged between the components, for example. Clamping mechanisms based on frictional engagement are also contemplated.

In order to fix the first end 41 of the spring 4 on the rod 2, a support element 11 designed as a pin projects from the rod head 22.

The first end 41 of the spring 4, which is embodied here as a helical spring, has the form of a hook with an angularly curved end piece 43 or in the form of an arc-shaped outlet which engages around the support element 11 in the functional position.

The second end 42 of the spring 4 is designed here as a polygonal receptacle, in which a first neck 53 of the bolt 5, which is designed in a polygonal manner, is received.

As further shown in fig. 3, the second neck 52 of the bolt 5 is also designed in a polygonal shape, which second neck 52 is received in a non-rotatable manner in a central opening 63 of the bearing shaft 6, which opening is designed as a polygonal receiving portion.

Thus, the second end 42 of the spring 4 is non-rotatably coupled to the bearing shaft 6 and the first end 41 of the spring 4 is supported on the support element 11 on the first lever 2, thereby counteracting the corresponding torque of the first lever 2 relative to the bearing shaft 6 in an undesired rotation and thus in the case of the second lever 3 which is non-rotatably arranged on the bearing shaft 6.

As an alternative to the pins with which the support element 11 is fixed on the head 22, it is also conceivable to use components already present on the swivel fitting 1 as the support element 11, depending on the design of the swivel fitting.

The exemplary fixing mechanism 7 shown in fig. 2 has two latching

claws

71, 72 which are rotatably mounted on the rod head 22 of the first rod 2 by means of fixing bolts.

One of these fixing bolts extends outwardly through a hole in the rod head 22 in the direction of the spring 4, thereby forming a support element 11 for the first end 41 of the spring 4.

The latching

claws

71, 72 serve to fix the rotary fitting 1 in a predetermined latching position or to release the bearing shaft 6 relative to the first lever 2 during the resetting movement of the rotary fitting 1.

In contrast to the embodiment variants of the swivel fitting shown in fig. 1 to 4, in the swivel fitting shown in fig. 5 and 6 the bolt 5 is formed with a head 54 and a cylindrical neck 51.

In order to fix the second section 42 of the spring 4 non-rotatably to the bearing shaft 6, a polygon 64 formed on the bearing shaft 6 projects from the head 22 of the first rod 2 in the extension of the central opening 63 and is accommodated in a non-rotatable manner in the end 42 of the spring 4 formed in a polygon-shaped accommodation.

In this case, the bolt 5 serves only to axially fix the spring 4 on the first rod 2.

The end of the bearing shaft 6 facing away from the spring 4 is in turn non-rotatably coupled to the second lever 3 by means of a first radial tooth 61, as shown in fig. 6.

Fig. 7 and 8 show an embodiment of the swivel fitting 1 with only the first lever 2.

The bearing shaft 6 protrudes from the head 22 on the side of the first rod 2 facing away from the spring 4, so that the radial tooth 61 is located outside the head 22, so that a corresponding coupling member of an adjusting part of the furniture can be connected directly to this radial tooth 61.

Furthermore, this variant corresponds to the embodiment variant of the swivel fitting 1 described with reference to fig. 5 and 6.

The embodiment variant of the swivel fitting 1 shown in fig. 9 and 10 corresponds substantially to the embodiment variant shown in fig. 1 to 4.

In contrast to the embodiment variant shown in fig. 1, the support element 11 is designed as a pin which projects in the direction of the spring 4 and is mounted on the lever head.

In principle, it is also conceivable to design the support element 11 as a part of the shaft head 22 of the shaft 2 which projects in the direction of the spring 4.

Furthermore, a polygon 65 of the bearing shaft 6, which is designed as a polygon or toothed ring, protrudes from the head 22 in the direction of the spring 4. The central opening 63 of the bearing shaft 6 is again polygonal, in particular quadrangular, and is provided for receiving the second neck 52 of the bolt 5, which is quadrangular.

In fig. 10 is exemplarily shown a support element 11 with a first end 41 of the spring 4 coupled to the head 22 of the first shaft 2 by a bent end piece 43.

The further embodiment of the swivel fitting 1 shown in fig. 11 and 12 shows two

lever arms

2, 3, which correspond to the embodiment of the swivel fitting 1 shown in fig. 9 and 10.

The bearing shaft 6 also has, on its end facing the spring 4, an end piece 64, which end piece 64 has the shape of a polygonal accommodation for the second end 42 of the spring 4 and is connected to a polygon 65 of the bearing shaft 6, which is designed as a polygon or toothed ring, and projects from the head 22 of the first lever 2 in the direction of the spring.

Finally, fig. 13 and 14 show an embodiment variant of the swivel fitting 1 according to the invention, which essentially corresponds to the embodiment variant shown in fig. 11 and 12, except that the second lever 3 is absent.

Fig. 15 shows an exemplary structure of a piece of furniture 8, a main body 81 and an adjusting part 82 rotatably held on the main body 81, the adjusting part 82 being rotatably held on the main body 81 of the piece of furniture 8 by such a rotating fitting 1.

List of reference numerals

1 rotating fittings

2 first rod

21 lever arm

22 club head

3 second lever

31 Lever arm

32 ring gear

4 spring

41 first end

42 second end

43 end piece

5 bolt

51 neck part

52 neck portion

53 neck

54 head

6 bearing shaft

61 radial tooth

62 radial teeth

63 opening

64 polygon

65 polygonal

7 fixing mechanism

71 latch pawl

72 latch pawl

8 furniture

81 furniture main body

82 regulating part

11 support element

12 gasket

D axis

V adjusting direction

R reset direction.

Claims

1. A swivel fitting (1), in particular for an adjustment part on furniture, comprising:

-a first lever (2) rotatably mounted on a bearing shaft (6),

-a fixing mechanism (7), by means of which fixing mechanism (7) the first lever (2) can be fixed in different angular positions within a predetermined angle (a) relative to the bearing shaft (6),

-a spring (4) for transmitting a torque to the first lever (2),

it is characterized in that the preparation method is characterized in that,

-a first end (41) of the spring (4) is non-rotatably connected to the first lever (2) and a second end (42) of the spring (4) is non-rotatably connected to the bearing shaft (6).

2. The swivel fitting according to claim 1, characterized in that a support element (11) protrudes from a side of the first lever (2) facing the spring (4), the first end (41) of the spring (4) being coupled to the support element (11).

3. The swivel fitting according to claim 2, characterized in that the support element (11) is designed as an end of a fixing bolt of a latching claw (72) of the fixing mechanism (7), which latching claw (72) is rotatably mounted on the first lever (2), which end projects in the direction of the spring (4), wherein the latching claw (72) in the stop position of the swivel fitting (1) engages with a tooth (61, 62) of the bearing shaft (6) to non-rotatably fix the second lever (3) or a furniture part which can be swiveled relative to the first lever (2).

4. The swivel fitting according to claim 2, characterized in that the support element (11) is designed as a pin protruding in the direction of the spring (4).

5. The swivel fitting according to claim 2, characterized in that the support element (11) is designed as a part of the head (22) of the first lever (2) that protrudes in the direction of the spring (4).

6. Swivel fitting according to any of the preceding claims, characterized in that the bearing shaft (6) has a central opening (63), in which central opening (63) a bolt (5) is accommodated.

7. The swivel fitting according to any one of the preceding claims, characterized in that the second end (42) of the spring (4) is designed as a polygonal receptacle.

8. The swivel fitting according to claim 6 or 7, characterized in that the bolt (5) has a first neck (53) designed as a polygon, which polygonal first neck (53) is accommodated in a non-rotatable manner in the second end (42) of the spring (4) designed as a polygonal accommodation.

9. The swivel fitting according to claim 8, characterized in that the bolt (5) has a second neck (52) which is designed as a polygon, the second neck (52) being accommodated in a non-rotatable manner in a central opening (63) of the bearing shaft (6) which is designed as a polygon receptacle.

10. The swivel fitting according to claim 6 or 7, characterized in that a polygon (64) is formed on the bearing shaft (6) in the extension of the central opening (63), which polygon (64) receives the second end (42) of the spring (4) designed as a polygon in a non-rotatable manner.

11. The swivel fitting according to claim 10, characterized in that the bolt (5) has a cylindrical neck (51), the cylindrical neck (51) being accommodated in a cylindrically designed central opening (63) of the bearing shaft (6).

12. A piece of furniture (8) having a body (81) and an adjusting part (82) which is held rotatably on the body (81), characterized in that the adjusting part (82) is fixed on the body (81) by means of at least one swivel fitting (1) according to one of the preceding claims.