Clamping device, upholstery and seating

Abstract

In order to provide a clamping device (1) for the releasable fastening of upholstery (2), in particular a seat cushion (14), to a usable surface (12, 14) of a piece of seating (10), in particular a seat surface (13) and / or backrest surface (12), an upholstery (2, 14), in particular a seat cushion (14), for placing on and / or against a usable surface (12, 13) comprising a mesh fabric, in particular a seat surface (13) and / or backrest surface (12), of a piece of seating (10), and a piece of seating (10), which are particularly practical and flexible in use while avoiding the disadvantages of the prior art, it is proposed that the clamping device (1) has a subassembly (3) with means for fastening the clamping device (1) to an underside (7) of the upholstery (2, 14) and fixing means (22, 23) for fixing the clamping device (1) to the usable surface.

Description

[0001] The present invention relates to a clamping device for the releasable fastening of upholstery, in particular a seat cushion, to a usable surface of a piece of seating furniture, in particular a seat surface and / or backrest surface.

[0002] Likewise, the present invention relates to upholstery, in particular seat cushions, for placing on and / or against a mesh-fabricated usable surface, in particular a seat surface and / or backrest surface, of a piece of seating furniture.

[0003] Finally, the present invention relates to a piece of seating furniture with a usable surface, in particular a seat surface and / or backrest surface, and upholstery, in particular a seat cushion, for placing on and / or against the usable surface.

[0004] Such clamping devices, upholstery, and seating furniture are particularly common in connection with patio furniture. Due to weather conditions, the seat cushions of conventional seating furniture have to be removed for storage. The reasons for this are, for example, that the seat cushions are not water-resistant or, for hygiene reasons, should not be exposed to rainwater. Another problem when storing seat cushions outdoors is that they can absorb moisture through dew, which can lead to mold growth. On the other hand, to ensure comfortable seating, the seat cushion must not slip relative to the seat or backrest. The seat cushion must also be attached to the seating for storm protection so that it cannot be knocked off the seat in strong winds.

[0005] Against this background, different concepts for fixing seat cushions to seating furniture are known.

[0006] In the simplest case, the seat cushions have fastening straps at the corners. However, this is cumbersome to use.

[0007] A technically more complex option for securing seat cushions to, for example, the seat or backrest of a patio chair is previously known from EP 3 159 211 B1. This provides that the cushion to be secured is provided with two female components that are part of a detachable clamping assembly. The corresponding male components of the detachable clamping assembly, the female component of which is attached to the cushion according to the prior art, are attached to a support surface to which the cushion is to be attached according to the prior art. To secure the cushion, according to the prior art, the male component attached to the support surface is received in a first axis in the housing of the female component.

[0008] The previously known system is comparatively cumbersome to use. To attach the cushion to the support surface, the female components of the clamping assembly provided on the cushion side must be aligned horizontally with the complementary male components on the support surface side in order to create the clamped connection between the cushion and the support surface. A further disadvantage is that, according to this state of the art, the cushion can only be connected to a support surface specifically designed for this cushion. The disadvantage here is that the support surface must be attached with male components complementary to the female components on the cushion side, at exactly the same distance and in the same position as on the cushion.

[0009] Against this background, the present invention is based on the object of specifying a clamping device of the type mentioned at the outset, an upholstery of the type mentioned at the outset and a piece of seating furniture of the type mentioned at the outset, which are particularly practical and flexible in use while avoiding the disadvantages of the prior art.

[0010] This object is achieved with a clamping device of the type mentioned above in that it comprises a subassembly with means for attaching the clamping device to an underside of the upholstery and fixing means for fixing the clamping device to a usable surface. According to the invention, the subassembly of the clamping device according to the invention allows fixing directly to the usable surface of the seating furniture, in particular to the seat of a patio chair. On the side of the usable surface, for example on the seat of a patio chair, advantageously no complementarily shaped component is required, with which the seat cushion would have to be aligned in order to fix it to the usable surface.

[0011] In a preferred embodiment of the clamping device according to the invention, the working surface comprises a mesh, wherein the fixing means comprise a projection for passing through a mesh of the mesh. Fixing the upholstery to the working surface in a horizontal direction is thus conveniently possible by simply placing a piece of upholstery provided with a clamping device according to the invention onto the working surface and inserting the projection into a mesh of the mesh on the working surface. Wicker chairs or wicker loungers are particularly common in the area of ​​patio furniture.

[0012] In a preferred embodiment of the clamping device according to the invention, the diameter of the projection is formed to be less than or equal to the mesh size of the mesh. For meshes where an elastic expansion of the mesh size is not possible either due to the material from which the mesh is made or due to the type of weaving, the clamping device can be advantageously used in conjunction with upholstery according to this embodiment to achieve horizontal fixation of the upholstery to the usable surface of the seating furniture.

[0013] In order to achieve a rotational symmetry of the projection of the clamping device according to the invention and consequently to be able to use the clamping device according to the invention with a large number of different braids within the scope of the invention, it has proven advantageous in an embodiment of the invention if the projection has a substantially cylindrical shape.

[0014] In order to also enable fixation against movements perpendicular to the usable surface, a preferred embodiment of the clamping device according to the invention provides that the projection has a larger diameter at a distal section than at a proxy section, wherein the projection at the distal section in particular has a bead-like widening. In elastic fabrics in which the mesh size is elastically stretchable, the projection can be pressed into the mesh with the widened distal end first, whereby the mesh expands. In this case, after the widened distal section of the projection has passed through the mesh, the elastic mesh contracts again and prevents the projection from leaving the mesh.

[0015] In order to be able to use the clamping device according to the invention also in conjunction with useful surfaces made of a mesh whose mesh size is not elastic, a further development of the invention provides that the projection has an elasticity, wherein the projection is made in particular of an elastic material.

[0016] If, in an advantageous embodiment of the invention, the subassembly has a flat contact surface for contact with the underside of the upholstery, the clamping device according to the invention can be particularly well connected to the upholstery, for example to the underside of a seat cushion.

[0017] For attaching the subassembly to the upholstery by means of a counter-element mounted on the seat surface of the upholstery, it has proven advantageous if the contact surface of the subassembly has a groove, particularly a closed ring, at an outer edge portion. Within the scope of the invention, pin-like elements can advantageously engage in the groove to sandwich the upholstery.

[0018] In a further advantageous embodiment of the clamping device according to the invention, the subassembly has a flat stop surface that abuts the working surface when the projection is passed through the mesh. This ensures particularly good fixation of the padding to the working surface. The stop surface can, in particular, have a disc shape. The contact surface for attaching the underside of the padding can also have a disc shape, in particular with the same diameter as the stop surface.

[0019] For particularly reliable fastening of the clamping device according to the invention to the underside of the upholstery, a further development of the invention provides that the fastening means comprise a counter-bearing part with a support surface for placing on the upper side of the upholstery and clamping means with a male component and a female component for establishing a clamped connection with the subassembly. The male component is preferably provided on the subassembly side. According to this variant of the clamping device according to the invention, the upholstery has a bore or recess through which the male component of the clamped connection can be guided to the opposite surface of the upholstery in order to establish a clamped connection with the female component.

[0020] In a manner known per se to the person skilled in the art, the male component can be accommodated in an axis in a housing of a female component

[0021] To ensure that the clamping device remains firmly connected to the upholstery and does not detach from it even if the upholstery is abruptly removed from its attachment to the surface, for example, when removing the upholstery from the seating furniture, the clamping means are designed according to a further advantageous embodiment of the invention such that, after being attached to the upholstery, they cannot be removed from the upholstery without causing damage by moving the subassembly relative to the counter-bearing part. This can be achieved within the scope of the invention, for example, by means of barb-like elements.

[0022] A particularly reliable fastening of the clamping device according to the invention to the upholstery is achieved in a further development of the invention if one or more, in particular three, mandrel-like spacer elements are arranged on an outer edge section of the support surface in such a way that a tip of the spacer element rests in the region of the groove of the contact surface of the subassembly when the clamping connection between the subassembly and the counter-bearing part is established, wherein in this state an intermediate space for sandwich-like clamping of the upholstery is formed between the contact surface and the support surface. In this way, the clamping device according to the invention can be fastened to the upholstery in cooperation with the subassembly and the counter-bearing part in such a way that the upholstery is clamped in a sandwich-like manner in the region of the respective clamping device.The mandrel-like spacer elements according to the invention additionally serve to secure the clamping element against movements of the clamping element in the plane of the usable surface.

[0023] According to a preferred embodiment of the invention, the clamping connection between the subassembly and the counter-bearing part is realized in that the male component has elasticity in the radial direction. For example, the male component can be a pin made of an elastic material, in particular plastic, and which has a slot in the axial direction so that the remaining casing parts of the cylindrical pin can be moved toward each other in the radial direction to be inserted into the female part and locked.

[0024] In order not to impair the seating comfort on the upholstery by the clamping device according to the invention, the counter-bearing part, in an advantageous embodiment of the invention, has a lens-like, convex-shaped seating surface on a side facing away from the support surface. In order to be able to wash the upholstery provided with the clamping device, the clamping device, in an advantageous embodiment of the invention, is made of a water-saving material.

[0025] The object directed to a padding of the type mentioned at the outset is achieved according to the invention in that it is provided with at least one, in particular two, clamping device(s) according to one of the preceding claims, wherein the padding is clamped in a sandwich-like manner between the subassembly and the counter-bearing part.

[0026] Finally, the object directed to a piece of seating furniture of the type mentioned at the outset is achieved in that the usable surface has a mesh fabric and that the upholstery is designed according to claim 14.

[0027] The invention is described by way of example in a preferred embodiment with reference to a drawing, wherein further advantageous details can be taken from the figures of the drawing.

[0028] Functionally identical parts are provided with the same reference symbols.

[0029] The figures in the drawing show in detail: Fig. 1: perspective side view of an embodiment of the disclosed clamping device in the form of an exploded drawing, schematically illustrating the interaction with a padding; Fig. 2: Picture sequence to illustrate the fastening of the clamping device from Fig. 1 on a cushion; Fig. 3: Perspective view of a piece of seating furniture according to the invention according to a preferred embodiment with upholstery according to an embodiment of the invention with a clamping device according to Fig. 1; Fig. 4: Illustration of the clamping device according to Fig. 1 in assembled condition, with the upholstery made of Fig. 1 is not shown, wherein Figure (a) is a side view and Figure (b) is a sectional view along the line B - B in Fig. 4 (a) shows.

[0030] The Fig. 1 shows, in the form of an exploded view in a lateral perspective view, a clamping device 1 according to the invention in an exemplary embodiment in cooperation with a padding 2, which is only indicated schematically.

[0031] As in Fig. As can be seen in Figure 1, the clamping device 1 consists of a subassembly 3 and a counter-bearing part 4. The counter-bearing part 4 is provided with a female component 5. On the other side, the subassembly 3 is provided with a male component 6. In this way, by connecting the male component 6 to the female component 5 of the subassembly 3, a clamping connection can be established between the subassembly 3 and the counter-bearing part 4. This creates the assembled clamping connection 1 according to the invention.

[0032] The subassembly 3 serves to attach it to the underside 7 of the padding 2 by supporting it against the counter-bearing part 4, which rests on the upper side 8 of the padding 2. The padding 2 is sandwiched between the subassembly 3 and the counter-bearing part 4.

[0033] Fig. Figure 2 illustrates in a sequence of images from sub-figures (a) to (d) how the clamping device according to Fig. 1 is attached to the underside 7 of the padding 2.

[0034] For this purpose, the padding 2 initially has a recess 9. The recess 9 is dimensioned such that the male component 6 of the subassembly 3 can be passed through the recess 9 in the padding 2.

[0035] In Fig. Figure 2 (b) shows the state after the next assembly step, in which the male component 6 of the subassembly 3 has been pushed through the recess 9 in the padding 2. The male component 6 therefore protrudes beyond the upper side 8 of the padding 2.

[0036] The next assembly step is shown schematically in Fig. 2 (c). Accordingly, the counter-bearing part 4 is arranged above the upper side 8 of the padding 2 such that the female component 5 of the counter-bearing part 4 is aligned with the male component 6 of the subassembly 3 in the horizontal projection.

[0037] Finally, Fig. 2 (d) the state after the final assembly step, in which the clamping connection between the male component 6 of the subassembly 3 and the female component 5 of the counter-bearing part 4 is made such that the padding 2 is sandwiched between the subassembly 3 and the counter-bearing part 4 in this area.

[0038] The Fig. The condition shown in 2 (d) is particularly good when the upholstery 2 is omitted. Fig. 4 (b). As can be seen, a type of barb at the distal end of the male component 6 serves to secure the clamping device to the padding 2 in such a way that it can no longer be separated without damage by movements of the subassembly 3 relative to the counter-bearing part 4. The barb is formed by a step-like widening of the cross-section of the male component 6, which is larger than that of the female component in the area of ​​the step. Above the step-like widening of the male component 6, it is conically tapered in order to ensure a secure connection during the transition from the state to Fig. 2(c) into the state according to Fig. 2 (d) to be easily inserted through the opening of the female component in the axial direction. Movement of subassembly 3 is then prevented by the stepped extension.

[0039] The Fig. 3 shows a perspective view of a piece of seating furniture in one embodiment of the invention in the form of a patio chair 10. The patio chair 10 has a backrest 11 with a backrest surface 12 and a seat surface 13. Fig. Figure 3 illustrates, in the manner of an exploded view, the placement of a seat cushion 14 of the patio chair 10 on the seat surface 13. The seat surface 13, like the backrest surface 12, has a mesh with meshes. For the purposes of the present application, a mesh is understood to mean a product obtained by interlacing several strands of flexible material. The seat cushion 14 of the patio chair 10 according to Fig. 3 is provided on its underside 7 with two clamping devices 1 spaced apart from each other according to Fig. 1 in the Fig. 2 outlined manner.

[0040] Fig. 4 shows in a side view (a) and in a sectional view (b) along the line B - B of Fig. 4 (a) the clamping device 1 from Fig. 1 in assembled condition. For illustration purposes, the upholstery 2 is in Fig. 4 not shown. In the two views according to Fig. 4 it can be seen that the male component 6 is clamped to the female component 5 by means of a clamping mechanism known per se. In this case, a slot 15 running in the axial direction in the male component 6 causes an elasticity of the male component 6, which allows the male component 6 to be inserted into the female component 5 according to the transition from Fig. 2 (c) after Fig. 2 (d).

[0041] The views according to Fig. 4 illustrate particularly well that the subassembly 3 has a flat contact surface 16 for contact with the underside 7 of the padding 2. Furthermore, the views from Fig. 4, in particular the sectional view according to figure (b), that the contact surface 16 of the subassembly 3 has an annular closed groove 17 at the outer edge.

[0042] Furthermore, in the Fig. 4 clearly shows that the counter-bearing part 4 has a support surface 18 for placing on the upper side 8 of the seat cushion 14 or the upholstery 2. On the outer edge of the support surface 18 of the counter-bearing part 4, three mandrel-like spacer elements 19 are formed on a circular line at a radial distance from the center of the support surface 18 in the circumferential direction at equal angular intervals of 120° to each other. In the sectional view according to Fig. 4 (b) is due to the course of the section line B - B in Fig. 4 (a) only one of the spacer elements 19 can be seen.

[0043] In the Fig. In the state shown in Figure 4, in which the subassembly 3 is in a clamped connection with the counter-bearing part 4, the mandrel-like spacer elements 19 ensure that a gap 20 for receiving the upholstery 2 or the seat cushion 14 is created between the support surface 18 of the counter-bearing part 4 and the contact surface 16 of the subassembly 3. The mandrel-like spacer elements 19 are arranged radially in the support surface 18 of the counter-bearing part 4 such that their tips rest on the groove 17 in the contact surface 16 of the subassembly 3.

[0044] Further shows Fig. 4, it is particularly good that the subassembly 3 has a flat stop surface 21. When the projection, designed as a cylindrical pin 22, is passed through a mesh in the usable surface, i.e., in particular, in the seat 13, the stop surface 21 strikes the usable surface or the seat 13 of the patio chair 10. The cylindrical pin 22 has a bead-like widening 23 at its distal end. Due to the bead-like widening 23, the diameter of the pin 22 is larger at the distal end than at the proximal section facing the stop surface 21.

[0045] With the clamping device 1 disclosed here in a preferred embodiment of the invention, a seat cushion 14 provided with this can be used as a special case of a padding 2 as in Fig.2. The seat cushion 14 thus equipped can then be placed on the seat surface 13 of the patio chair 10. The pins 22 with the bead-like widening 23 at the distal end of the two clamping devices 1 in the seat cushion 14 are pressed through one of the meshes of the weave from which the seat surface 13 is made. This is possible due to the elasticity of the material from which the weave is made, for example, wicker. When the seat cushion 14 is placed on the seat surface 13, the meshes are expanded due to the pressure exerted by the bead 23 until the bead 23 has passed through the mesh. The cushion then comes into contact with the seat surface 13 using the stop series 21 of the subassembly 3 of the clamping device 1. The seat cushion 14 is then secured relative to the seat surface 13 both against movements in the plane of the seat surface 13 and against movements perpendicular to the seat surface 13.The vertical securing is ensured by the bead-like widening 23 of the pin 22. The securing in the horizontal plane is ensured by the pin 22, whose movement is restricted by the mesh.

[0046] To remove the seat cushion 14, it is simply lifted upwards. The loops are widened by the bead-like widenings 23 at the distal end of the pins 22, allowing the pin to pass through the loop with its bead-like end.

[0047] Advantageously, when placing the seat cushion 14 on the seat surface 13, it is not necessary to ensure that the clamping devices 1 with their pins 22 are aligned with a corresponding counterpart on the side of the seat surface 13, as is the case, for example, with the subject matter of EP 3 159 211 B1. Furthermore, no female counterpart to the pin 22 needs to be arranged in the seat surface 13. Rather, the meshes of the mesh of the seat surface 13 serve functionally as female components of the clamping connection between the pin 22 and the seat surface 13. LIST OF REFERENCE SYMBOLS 1 clamping device 2 upholstery 3 Subassembly 4 Counter bearing part 5 female component 6 male component 7 Bottom 8 Top 9 Recess 10 patio chairs 11 Backrest 12 backrest 13 Seat 14 seat cushions 15 slot 16 contact surface 17 grooves 18 support surface 19 mandrel-like spacer element 20 space 21 Stop surface 22 pin 23 bead-like widening QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] EP 3 159 211 B1 [0007, 0047]

Claims

[1] Clamping device (1) for detachably fastening upholstery (2), in particular a seat cushion (14), to a usable surface (12, 14) of a piece of seating furniture (10), in particular seat surface (13) and / or backrest surface (12), characterized by , that it has a subassembly (3) with means for attaching the clamping device (1) to an underside (7) of the padding (2, 14) and fixing means (22, 23) for fixing the clamping device (1) to the usable surface. [2] Clamping device (1) according to claim 1, characterized by , that the usable area (12, 14) has a mesh, wherein the fixing means (22, 23) have a projection (22, 23) for passing through a mesh of the mesh. [3] Clamping device (1) according to claim 1 or 2, characterized by , that the diameter of the projection is formed to be less than or equal to the mesh size of the meshes of the braid. [4] Clamping device (1) according to one of the preceding claims, characterized by, that the projection (22, 23) has an essentially cylindrical shape. [5] Clamping device (1) according to one of the preceding claims, characterized by , that the projection (22, 23) has a larger diameter at a distal section than at a proximal section, wherein the projection at the distal section in particular has a bead-like widening (23). [6] Clamping device (1) according to one of the preceding claims, characterized by , that the projection (22, 23) has an elasticity, wherein the projection is in particular made of an elastic material. [7] Clamping device (1) according to one of the preceding claims, characterized by , that the subassembly (3) has a flat contact surface (16) for contact with the underside (7) of the padding (2, 14). [8] Clamping device (1) according to one of the preceding claims, characterized by, that the mounting surface (16) of the subassembly (3) has a groove (17) on an outer edge section, in particular a ring-shaped closed groove. [9] Clamping device (1) according to one of the preceding claims, characterized by , that the subassembly (3) has a flat stop surface (21) which, when the projection (22, 23) is passed through the mesh, abuts the usable surface (12, 13). [10] Clamping device (1) according to one of the preceding claims, characterized by , that the means for fastening comprise a counter bearing part (4) with a bearing surface (18) for placing on the top (8) of the padding (2, 14) and clamping means with a male component (6) and a female component (5) for making a clamping connection with the subassembly (3), wherein preferably the male component (6) is provided on the side of the subassembly (3). [11] Clamping device (1) according to one of the preceding claims, characterized by, that one or more, in particular three, mandrel-like spacer elements (19) are arranged on an outer edge section of the support surface (18) such that a tip of the spacer element (19) rests in the area of ​​the groove (17) of the contact surface (16) of the subassembly (3) when the clamping connection between the subassembly (3) and the counter bearing part (4) is made, wherein in this state a space (20) is formed between the contact surface (16) and the support surface for sandwich-like clamping of the padding (2, 14). [12] Clamping device (1) according to one of the preceding claims, characterized by , that the male component (6) exhibits elasticity in the radial direction. [13] Clamping device (1) according to one of the preceding claims, characterized by , that the counter bearing part (4) has a lens-shaped convex seating surface on one side facing away from the bearing surface (18). [14] Padding (2, 14), in particular seat cushion (14), for placing on and / or attaching to a usable surface (12, 13) having a mesh fabric, in particular seat surface (13) and / or backrest surface (12), of a piece of seating furniture (10), characterized by that it is provided with at least one, in particular two, clamping device(s) (1) according to one of the preceding claims, wherein the padding (2, 14) is sandwich-like clamped between the sub-assembly (3) and the counter-bearing part (4). [15] Seating furniture (10) with a usable surface (12, 13), in particular a seat surface (13) and / or backrest surface (12), and upholstery (2, 14), in particular a seat cushion (14), for placing on and / or against the usable surface (12, 13), characterized by , that the usable area (12, 13) has a mesh fabric and that the padding (2, 14) is designed according to claim 14.

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