Translational / rotational fitting

Abstract

A translational / rotational fitting for the at least partially positively guided simultaneous translational / rotational movement of a first basic structure (11) relative to a second basic structure (12) in one of two opposite directions of rotation (R1, R2) and in a predefined direction of translation (A) has a first fitting plate (2), which can be fastened on the first basic structure (11), a second fitting plate (3), which can be fastened on the second basic structure (12) and can be simultaneously moved translationally and rotationally with respect to the first fitting plate (2), a linear guide (6), which is arranged on the first fitting plate (2) and has at least one first rail (61), which is arranged at a fixed location in relation to the first fitting plate (2), and at least one second rail (62), which can be displaced relative to the first rail (61) in a direction of translation (A), and the translational / rotational fitting also has a rotary bearing (7) having a first rotary-bearing portion (71), which is arranged at a fixed location on the at least one second rail (62), having a second rotary-bearing portion (72), which is arranged on the second fitting plate (3), and having a rolling bearing (8) or plain bearing, which is arranged between the rotary-bearing portions (71, 72), wherein the two rotary-bearing portions (71, 72) are fixed relative to one another in a direction (z) perpendicular to the translational / rotational movement by an annular connecting element. The invention also describes a furniture or domestic-appliance element (10).

Description

[0001] T ranslation rotation fitting

[0002] The present invention relates to a translation-rotation fitting for at least partially forced simultaneous translation-rotation movement of a first body relative to a second body according to the preamble of claim 1

[0003] The invention further relates to a furniture or household appliance element according to the preamble of claim 10.

[0004] A generic translation-rotation fitting is known, for example, from WO 2022 / 157295 A1. It serves to move a first body relative to a second body in an at least partially forced, simultaneous translation-rotation movement in one of two opposite directions of rotation and in a predetermined translation direction relative to each other.

[0005] Such a translation-rotation fitting has proven itself in practice.

[0006] For the assembly of the translation-rotation fitting, which essentially consists of a first fitting plate, a second fitting plate with a linear guide arranged thereon and a pivot bearing arranged between the fitting plates, a guide carriage is used in the translation-rotation fitting known from the prior art for the axial coupling of the fitting halves, ie in a direction perpendicular to the plane of movement.

[0007] The object of the present invention is therefore to provide a translation-rotation fitting in which the fitting plates are held together in an alternative manner in the vertical direction.

[0008] The stated object is achieved by a translation-rotation fitting having the features of claim 1. The translation-rotation fitting according to the invention for the at least partially forced simultaneous translation-rotation movement of a first body relative to a second body in one of two opposite directions of rotation and in a predetermined translation direction has a first fitting plate attachable to the first body and a second fitting plate attachable to the second body and simultaneously movable translationally and rotationally relative to the first fitting plate.

[0009] The translation-rotation fitting further comprises a linear guide arranged on the first fitting plate with at least one first rail arranged fixedly to the first fitting plate and a second rail displaceable relative to the first rail in a translation direction.

[0010] The translation-rotation fitting further comprises a pivot bearing with a first pivot bearing section arranged in a fixed position on the at least one second rail, a second pivot bearing section arranged on the second fitting plate and a rolling bearing or plain bearing arranged between the pivot bearing sections.

[0011] The two pivot bearing sections are fixed relative to each other by an annular connecting element in a direction perpendicular to the translational-rotational movement.

[0012] With the aid of such a ring-shaped connecting element, a vertical fixation of the components of the translation-rotation fitting can be carried out in a simple manner while maintaining the rotational mobility of the two pivot bearing sections relative to each other.

[0013] According to an advantageous embodiment of the invention, the first pivot bearing section has a bearing ring with a rolling surface, a chamfer formed radially on the inside of the rolling surface and an undercut widened radially outwards below the rolling surface.

[0014] The second pivot bearing section has an annular groove, with a rolling surface arranged in the annular groove and webs that protrude radially outward from a radially inner edge of the annular groove toward the rolling surface, forming an undercut. Due to this design of the two pivot bearing sections, the insertion of the annular connecting element enables locking between the two pivot bearing sections in the vertical direction.

[0015] According to a first advantageous embodiment, the annular connecting element is designed as a snap ring.

[0016] According to an advantageous further development, the snap ring extends in the assembled state into the undercut of the first pivot bearing section and into the undercut of the second pivot bearing section.

[0017] Fixing the two pivot bearing sections in this way also makes it possible to absorb any tilting moments that may occur.

[0018] Furthermore, such a snap ring is also advantageous in terms of its good sliding friction properties and noise reduction.

[0019] A further advantage of such a snap ring is the simple installation of such a snap ring on the translation-rotation fitting itself as well as the easy installation of the two fitting plates by plugging them on, which is made possible by the use of such a snap ring.

[0020] According to an advantageous embodiment, the snap ring can be pre-assembled on the second pivot bearing section.

[0021] This makes it possible to simply fit the two pivot bearing sections together after pre-assembly of the snap ring and thus secure the translation-rotation fitting in the vertical direction.

[0022] In order to fix the snap ring in the circumferential direction, according to a further preferred development, ends of the snap ring are locked in a gap of the inner edge of the second pivot bearing section in the circumferential direction.

[0023] Furthermore, to facilitate the attachment of the first pivot bearing section to the second pivot bearing section, the outer diameter of the snap ring, when the ends of the snap ring are in contact, is smaller than an opening defined by the inner diameter of the bearing ring at the end of the chamfer remote from the rolling surface. Thus, when attaching the first pivot bearing section to the second pivot bearing section, the snap ring can be inserted into the opening in the area of ​​the chamfer (viewed in the vertical direction), so that the snap ring automatically expands radially outward after being pushed through this opening and thus reaches the undercut of the second pivot bearing section.

[0024] According to an alternative embodiment, the annular connecting element is designed as a bayonet ring.

[0025] This variant also allows the two pivot bearing sections to be easily plugged together.

[0026] In a preferred embodiment, the bayonet ring has an annular base body with tool recesses formed in an outer circumference and locking tongues formed on an inner circumference and delimiting web receptacles.

[0027] In the final assembled state of the bayonet ring, first locking tongues are received between the webs of the second pivot bearing section and the underside of the rolling surface of the first pivot bearing section forming the undercut.

[0028] The tool recesses make it easy to move the bayonet ring, which is inserted into the ring groove, circumferentially. The circumferential movement of the bayonet ring is sufficient to push the webs of the second pivot bearing section onto the first locking tabs.

[0029] As a result, the first locking tongues of the bayonet ring are held between the webs of the second pivot bearing section and the rolling surface of the first pivot bearing section.

[0030] The furniture or household appliance element according to the invention comprises a first body and a second body movable relative to the first body, as well as a translation-rotation fitting with which the first body can be moved relative to the second body in a predetermined translation direction and simultaneously in one of two possible opposite rotation directions. The furniture or household appliance element is characterized by a translation-rotation fitting as described above.

[0031] Preferred embodiments of the invention are explained in more detail below with reference to the accompanying drawings. They show:

[0032] Figure 1 is a schematic perspective view of an embodiment of a translation-rotation fitting according to the invention,

[0033] Figure 2 is a partial exploded view of the translation-rotation fitting shown in Figure 1,

[0034] Figure 3 is a perspective view of a section of a bottom side of the second fitting plate, not visible in Figure 2, which section has a pivot bearing,

[0035] Figure 3a is an enlarged detail of a detail shown in Figure 3,

[0036] Figure 4 is a plan view of the underside of the second fitting plate corresponding to Figure 3 with the rolling element ring hidden and the snap ring inserted,

[0037] Figure 5 is a perspective view of the first fitting plate,

[0038] Figure 6 is a plan view of a variant of a snap ring,

[0039] Figure 7 shows a further perspective view of the translation-rotation fitting with a section plane displayed,

[0040] Figure 8 is a sectional view through the section plane designated S in Figure 7,

[0041] Figure 9 shows a further sectional view through the first pivot bearing section, mounted on the linear guide,

[0042] Figure 10 is a top view of the first pivot bearing section with the snap ring inserted in the expanded position, Figure 11 is a corresponding bottom view of the first pivot bearing section,

[0043] Figures

[0044] 12 and 13 show a representation corresponding to Figures 10 and 11 with the snap ring compressed with the ends touching each other,

[0045] Figure 14 is a schematic perspective view of the second fitting plate before inserting a bayonet ring,

[0046] Figure 15 is a perspective view of a section of the translation-rotation fitting with the bayonet ring inserted before it is locked,

[0047] Figure 16 is a view corresponding to Figure 15 after locking the bayonet ring,

[0048] Figure 17 is a perspective view of a variant of the bayonet ring,

[0049] Figure 18 is a sectional view through the translation-rotation fitting to show the arrangement of the bayonet ring,

[0050] Figure 19 is a perspective view of a variant of a piece of furniture with a translation-rotation fitting inserted therein (not visible) in a closed position of the second body,

[0051] Figure 20 is a further perspective view of the piece of furniture shown in Figure 19 with the second body moved from the closed position into a first intermediate position,

[0052] Figure 20 is a further perspective view of the piece of furniture shown in Figure 19 with the second body moved from the first intermediate position into a second intermediate position, and

[0053] Figure 22 shows a further perspective view of the piece of furniture shown in Figure 19 after the translational-rotational movement of the second body into an end-open position. In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the translational-rotational fitting, the first fitting plate, the second fitting plate, the snap ring, the bayonet ring, the linear guide, the pivot bearing, and the like chosen in the respective figures. These terms are not to be understood as limiting; i.e., these references may change due to different working positions or the mirror-symmetrical design or the like.

[0054] In Figures 1 and 2, reference numeral 1 denotes an embodiment variant of a translation-rotation fitting according to the invention.

[0055] In Figures 19 to 22, reference numeral 10 denotes an embodiment variant of a piece of furniture or household appliance 10 according to the invention, in which such a translation-rotation fitting 1 can be advantageously used.

[0056] The translation-rotation fitting 1 serves for the at least partially forced simultaneous translation-rotation movement of a first body 11, preferably a piece of furniture or household appliance 10, as shown by way of example in Figures 19 to 22, relative to a second body 12 in one of two opposite directions of rotation Ri, R2 and in a predetermined translation direction A. The second body 12 has at least one closed outer wall or intermediate wall and at least one shelf.

[0057] For this purpose, the translation-rotation fitting 1 has a first fitting plate 2 which can be fastened to a first body 11, in particular to a base 13 and / or to a cover 14 of the body 11, and a second fitting plate 3 which can be fastened to the second body 12 and can be moved simultaneously in a translational and rotational manner relative to the first fitting plate 2.

[0058] In addition to a conventional first body with base 13, lid 14 and at least one side wall, the second body 12, which is mounted at least partially so as to be movable both translationally and rotationally at the same time, can be fixed directly to a room wall only via a base and a lid, wherein the base and lid in this case form the first body.To illustrate the movement sequence of the second body 12 made possible by such a translation-rotation fitting 1, Figure 19 shows a closed position of the piece of furniture 10, Figure 20 shows a state in which the second body 12 has been moved from the closed position into a first intermediate position, Figure 21 shows a state in which the second body 12 has been moved further from the first intermediate position into a second intermediate position, and Figure 22 finally shows a state in which the second body 12 has been moved further from the second intermediate position into its final opening position, in which the second body has been rotated by a total of 180° relative to its closed position in the exemplary embodiment shown.

[0059] The translation-rotation fitting 1 further comprises a linear guide 6 arranged on the first fitting plate 2 with at least one, in the embodiment shown according to Figures 1 and 2, two first rails 61 and respective second rails 62 which can be displaced relative to the first rail 61 in a translation direction A.

[0060] Furthermore, the translation-rotation fitting 1 has a pivot bearing 7 with a first pivot bearing section 71 fixedly arranged on the at least one second rail 62, a second pivot bearing section 72 arranged on the second fitting plate 3, and a roller bearing 8 arranged between the pivot bearing sections 71, 72 (shown in Figure 3). Instead of the roller bearing 8, the arrangement of a plain bearing is also conceivable.

[0061] The rolling bearing 8 preferably consists of an annular cage 81 in which a plurality of rolling elements 82, balls in the embodiment shown, are held.

[0062] In order to fix the first fitting plate 2 and the second fitting plate 3 to one another in the vertical direction Z after assembly, the two pivot bearing sections 71, 72 are fixed relative to one another by an annular connecting element in a direction z perpendicular to the translation-rotation movement, which in the embodiment shown takes place in an xy plane.

[0063] The first fitting plate 2 has, as can be seen, for example, in Figures 2 and 5, a base plate 21 to which the first rails 61 of the linear guide 6 are fastened. Furthermore, a guide element 22 is attached to this base plate 21, here in the form of a guide roller rotatable about a vertical axis, i.e., extending in the Z direction, which, in the assembled state, is guided in a guide track 32 arranged, in particular molded, in a base plate 31 of the second fitting plate 3.

[0064] The second fitting plate 3 further comprises a flange 33 for fastening the second fitting plate 3 to the second body 12.

[0065] The first pivot bearing section 71 has, as shown in Figures 5 and 8, a bearing 73 with a rolling surface 74, wherein the rolling elements 82 of the rolling bearing 8 roll on the rolling surface 74.

[0066] Radially inward from the rolling surface 74 there is a chamfer 75, the purpose of which will be explained in more detail below.

[0067] Below the section of the bearing ring 73 with the chamfer 75, a radially outwardly widened undercut 76 is formed, which represents a first counter surface for the annular connecting element for the vertical fixing of the two pivot bearing sections 71, 72 to one another.

[0068] The second pivot bearing section 72 has an annular groove 34 and a rolling surface 77 formed in the annular groove 34 as well as webs 78 which project radially outwards in the direction of the rolling surface 77 from a radially inner inner edge 79 of the second pivot bearing section 72 and form an undercut.

[0069] These webs 78 form the second counter surface for the annular connecting element for vertically securing the pivot bearing sections 71, 72 to one another.

[0070] The annular connecting element is designed as a snap ring 4 in the embodiment shown in Figures 2 to 13.

[0071] A detailed view of such a snap ring 4 is shown in Figure 6. The snap ring 4 is designed as a substantially circular, open ring, with two ends 41 that are slightly wider in the radial direction (in the xy plane) than the remaining radial width of the snap ring 4 and are delimited by a step from the rest of the snap ring 4. Extending on both sides of the ends 41 is a first region 42 that tapers radially toward the ends 41.

[0072] On the side of the snap ring 4 radially opposite the ends 41, a second region 43 extends, which in turn is slightly tapered in its radial width compared to the first regions 42.

[0073] The shape of the snap ring 4 thus enables easy assembly of the snap ring 4 on the pivot bearing sections 71, 72.

[0074] The snap ring 4 can preferably be pre-assembled on the second pivot bearing section 72.

[0075] In the expanded state, the snap ring 4 can be pressed around the inner edge 79 of the second pivot bearing section 72 over the webs 78 and under the webs 78.

[0076] When the second pivot bearing section 72 is subsequently placed on the first pivot bearing section 71, the snap ring 4 is radially compressed by means of the chamfer 75 at the radially inner end of the rolling surface 74 of the first pivot bearing section 71 and, after passing the chamfer 75, can expand radially again due to its inherent elasticity and in the process expand into the undercut 76 of the first pivot bearing section 71.

[0077] In the assembled state, the snap ring 4 is arranged such that it extends into the undercut 76 of the first pivot bearing section 71 and into the undercut of the second pivot bearing section 72, as shown in Figure 8.

[0078] When mounted on the second pivot bearing section 72, the ends 41 of the snap ring 4 are preferably locked in a gap 79a of the inner edge 79 of the second pivot bearing section 72 in the circumferential direction, as can be clearly seen, for example, in Figure 3a.

[0079] The outer diameter of the snap ring 4 is preferably smaller than an opening defined by the inner diameter of the bearing ring 73 at the end of the chamfer 75 remote from the rolling surface 74 when the ends 41 of the snap ring 4 are in contact with each other, as shown by way of example in Figures 12 and 13. This allows for easy insertion of the first pivot bearing section 71 onto the second pivot bearing section 72.

[0080] The snap ring is preferably made of metal or plastic.

[0081] In the alternative embodiment of the translation-rotation fitting 1 shown in Figures 14 to 18, the annular connecting element is designed as a bayonet ring 5.

[0082] The bayonet ring 5 has an annular base body 51 with tool recesses 52 formed in an outer circumference and locking tongues 53, 54 formed on an inner circumference and delimiting web receptacles 55.

[0083] The second locking tongues 54 are designed to be resilient in the region of their free ends and are preferably formed with a thickened portion on their surface facing the first locking tongues 53, which, after assembly, is supported against one of the webs 78.

[0084] In the final assembled state of the bayonet ring 5, first locking tongues 53 are received between the webs 78 of the second pivot bearing section 72 and the underside of the rolling surface 74 of the first pivot bearing section 71 forming the undercut 76, as shown in Figure 18.

[0085] The tool recesses 52 allow a displacement of the bayonet ring 5 in the circumferential direction after the bayonet ring 5 has been inserted into the gap between the inner edge 79 and the wall that radially outwardly delimits the undercut 75.

[0086] After the two pivot bearing sections 71, 72 have been fitted together, the bayonet ring 5 is inserted into the gap or groove described above in a predetermined orientation, in such a way that web receptacles 55 of the bayonet ring 5 receive the webs 78 of the second pivot bearing section 72.

[0087] The position of the bayonet ring 5 inserted into the second pivot bearing section 71 before locking by sliding in the circumferential direction is shown in Figure 15. By subsequently rotating the bayonet ring 5, counterclockwise in Figure 17, the webs 78 are pushed onto the first locking tongues 53 and are thus fixed upwards in the vertical direction towards the webs 78 in the arrangement shown in Figure 18, while an underside of the bayonet ring 5 is held downwards by the underside of the rolling surface 74 and thus effects a vertical fixation of the first pivot bearing section 71 to the second pivot bearing section 72. The locked functional position of the bayonet ring 5 in the second pivot bearing section 72 is shown in Figure 16.

[0088] List of reference symbols

[0089] 1 T ranslation rotation fitting

[0090] 2 first fitting plate

[0091] 21 Base plate

[0092] 22 Guide element

[0093] 3 second fitting plate

[0094] 31 Base plate

[0095] 32 guideway

[0096] 33 flange

[0097] 34 ring groove

[0098] 4 snap ring

[0099] 41 End

[0100] 42 first area

[0101] 43 second area

[0102] 5 bayonet ring

[0103] 51 basic bodies

[0104] 52 Tool recess

[0105] 53 first locking tongue

[0106] 54 second locking devices

[0107] 55 bridge mount

[0108] 6 Linear guide

[0109] 61 first rail

[0110] 62 second rail

[0111] 7 pivot bearings

[0112] 71 first pivot bearing section

[0113] 72 second pivot bearing section

[0114] 73 Bearing ring

[0115] 74 Rolling surface

[0116] 75 chamfer

[0117] 76 undercut

[0118] 77 Rolling surface

[0119] 78 web 79 inner edge 79a gap

[0120] 8 rolling bearings

[0121] 81 Cage

[0122] 82 rolling elements

[0123] 10 Furniture or household appliance element

[0124] 11 first corpus

[0125] 12 second body

[0126] 13 Floor

[0127] 14 Cover x direction y direction z direction

[0128] RI, R2Direction of rotation

[0129] A Translation direction

Claims

Claims 1 . Translation-rotation fitting (1) for at least partially forced simultaneous translation-rotation movement of a first body (11) relative to a second body (12) in one of two opposite directions of rotation (Ri, R2) and in a predetermined translation direction (A), comprising - a first fitting plate (2) attachable to the first body (11), - a second fitting plate (3) which can be fastened to the second body (12) and can be moved simultaneously in translation and rotation relative to the first fitting plate (2), - a linear guide (6) arranged on the first fitting plate (2) with at least one first rail (61) arranged in a fixed position relative to the first fitting plate (2) and a second rail (62) displaceable relative to the first rail (61) in a translation direction (A), - a pivot bearing (7) with a first pivot bearing section (71) arranged in a fixed position on the at least one second rail (62), a second pivot bearing section (72) arranged on the second fitting plate (3) and a rolling bearing (8) or plain bearing arranged between the pivot bearing sections (71, 72), characterized in that the two pivot bearing sections (71, 72) are fixed relative to one another by an annular connecting element in a direction (z) perpendicular to the translational-rotational movement.

2. Translation-rotation fitting (1) according to claim 1, characterized in that the first pivot bearing section (71) has a bearing ring (73) with a rolling surface (74), a chamfer (75) formed radially on the inside of the rolling surface (74) and an undercut (76) widened radially outwards below the rolling surface (74), and the second pivot bearing section (72) has an annular groove (34), wherein a rolling surface (77) and webs (78) forming an undercut are arranged in the annular groove (34) and project radially outwards in the direction of the rolling surface (77) from a radially inner inner edge (79) of the annular groove (34) in sections.

3. Translation-rotation fitting (1) according to claim 1 or 2, characterized in that the annular connecting element is designed as a snap ring (4).

4. Translation-rotation fitting (1) according to claim 3, characterized in that the snap ring (4) in the assembled state extends into the undercut (76) of the first pivot bearing section (71) and into the undercut of the second pivot bearing section (72).

5. Translation-rotation fitting (1) according to claim 3 or 4, characterized in that the snap ring (4) can be pre-assembled on the second pivot bearing section (72).

6. Translation-rotation fitting (1) according to one of claims 3 to 5, characterized in that ends (41) of the snap ring (4) are locked in a gap (79a) of the inner edge (79) of the second pivot bearing section (72) in the circumferential direction.

7. Translation-rotation fitting (1) according to one of claims 3 to 6, characterized in that an outer diameter of the snap ring (4) at mutually contacting ends (41) of the snap ring (4) is smaller than an opening delimited by the inner diameter of the bearing ring (73) at the end of the chamfer (75) remote from the rolling surface (74).

8. Translation-rotation fitting (1) according to claim 1 or 2, characterized in that the annular connecting element is designed as a bayonet ring (5).

9. Translation-rotation fitting (1) according to claim 8, characterized in that the bayonet ring (5) has an annular base body (51) with tool recesses (52) made in an outer circumference and locking tongues (53, 54) formed on an inner circumference and delimiting web receptacles (55), wherein in the finally assembled state of the bayonet ring (5) first locking tongues (53) are received between the webs (78) of the second pivot bearing section (72) and the underside of the rolling surface (74) of the first pivot bearing section (71) forming the undercut (76).

10. Furniture or household appliance element (10), comprising - a first body (11) and a second body (12) movable relative to the first body, - a translation-rotation fitting (1 ) with which the first body (11 ) is movable relative to the second body (12) in a predetermined translation direction (A) and simultaneously in one of two possible opposite rotation directions (Ri, 2), characterized in that - the translation-rotation fitting (1) is designed according to one of the preceding claims.

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