KR100405753B1 - Support with adjustable arch for any type of seat or bed - Google Patents

Abstract

The present invention relates to a support with an adjustable arch, in particular to a waist support for various seats or beds. The support of the present invention includes an elastic arch element and an adjusting device that can set and readjust the arch of the arch element. The arch element essentially comprises a flat archable frame portion 5; 5 '; 5 "and one or more plates 8; 27, 28; 48 with two elastic ends. It is rigidly connected to the frame part over.

Description

SUPPORT WITH ADJUSTABLE ARCH FOR ANY TYPE OF SEAT OR BED}

Such arch elements are known, for example, from DE-OS 25 41 559, DE 42 32 679 C1 and DE 44 44 803 C2. Virtually all known arch elements have the following common problems. As the shape of the arch increases, the rigidity of the arch element increases, and the support surface area supporting the body gradually decreases until contact of the linear line is achieved, and at least after a significant use, the user feels uncomfortable and even painful. These problems also accumulate even when the level of the arch elements is misadjusted.

In DE-OS 25 41 559 a backrest is known which provides an extensible and retractable rigid support panel fixed to two supports in the form of leaf springs, which are also movable together with respect to one another. Do. In this case, the support surface has a constant size regardless of the extended or retracted state and also has a generally constant rigidity.

US-A-5 651 587 and corresponding DE 42 32 679 C1, and DE 43 20 105 C1, which form the preamble of claim 1 of the present application, disclose a backrest with an adjustable arch element, the backrest being adjusted An additional pelvic support connected to the ecliptic arch element. In this way, in particular, if an elastic flexible panel is provided instead of a rigid panel according to the operating example, where one side of the panel is spring-loaded, a large area of support, especially an enlarged side toward the pelvis, is obtained, even if the arch is extended Lose. However, this embodiment is expensive because the manufacturing process is complicated and a large amount of components are required.

DE 44 44 803 C3 discloses an elastic arch element of plastic, which is simple to manufacture because it is produced in one piece, but the above-mentioned problems in the arched state described above, since the elements of the adjusting device are integrated therein. Is generated.

FIELD OF THE INVENTION The present invention relates to a support having an adjustable arch for use in various beds and seats, in particular car seats and backrests, and more particularly to a waist support, the structure of which is an arching element and the like. It includes an adjusting device for setting and readjusting the arch of the arch element.

1 is a plan view of an adjustable support of an arch with a panel received in a movable manner up and down within the back of the seat;

Figure 2 is a side view of the support shown in Figure 1,

3 is an example of operation of a support with two panels arranged in parallel.

4 is various embodiments of a panel.

FIG. 5 is a plan view of an example of operation including two panels and a central passageway for the cable of the Bowden cable structure for adjusting the arch. FIG.

6 is a side view of FIG. 5.

FIG. 7 is a view of the support assembled with the cover when a) in its starting position, b) becomes significantly arched.

8 is a side view of a passageway in the form of a blanked web to the end of the sleeve of the bowed cable after being mounted and deformed with the sleeve.

Fig. 9 is a side view and a plan view of a modification of the working example of the passage means after deformation with the sleeve in the form and the attached state of the blanked web; * Explanation of the symbols for the main parts of the drawings * 1: Long rod 2: transverse rod DESCRIPTION OF SYMBOLS 3 Intermediate rod 4 Structure formed by the longitudinal rod and the intermediate rod 5,5 ', 5 "Archable element member 6 Curved or folded edge 7 Guide opening 8, 27, 28 Panel 9 Slot 10, 34 Connection web 11 Upper panel 12 Lower panel 13 Rim (free end) 14 Cable structure 15, 24, 24 'Cable 16 Nipple 17, 18 Rebate 19, 46 Slot 20, 23, 23' Sleeve 25 hook type bend 35 longitudinal edge 37 riveting 37 'fixing means 38 groove 39 protrusion 40 cover 41,41' web 42 bending line 43 second wire 44 third wire 45 Opening

The object of the present invention is adjustable according to the preamble of claim 1 of the present application, the arch of the support is elastic even in the case of an extreme arch, a large area of contact with the user, and also quick and easy at an economic cost. It is to provide an improved support that is easily manufactured and assembled.

This object can be achieved by a support having an adjustable arch with elements of the features of claim 1. By this solution, the arch element is obtained from the archable element member and the panel connected to this archable element member, and since the connection has a small surface area, the panel does not become small arched or arched, and it does not matter the degree of the arch. It is always elastic and works in a large area manner.

The dependent claims of the claims include advantageous further refinements of claim 1, wherein each advantage of the dependent claims describes in more detail the technique of the working example of the invention.

In the following, the present invention will become more apparent from the description of the operation example with reference to the drawings.

1 and 2 show a support with an adjustable arch, which is adjustablely coupled on the longitudinal rod 1 in the form of a round rod. The longitudinal rods 1 are respectively connected to the lateral rods 2 at the top and the bottom, and an intermediate rod 3 is connected between these longitudinal rods 1. The structure 4 formed by these rods 1, 2, 3 forms part of the seat back of any type not shown. Such a structure 4 is preferably connected to the backrest by a fixing element of plastic. The support comprises an archable element member 5 assembled movably up and down along the longitudinal rod 1. The archable element member 5 has a sheet-like structure and includes bent over edges 6 at its upper and lower ends, and within this edge 6 arches in the structure 4 without the use of instruments. Slotted guide apertures 7 are provided for movably assembling the possible element members 5.

The panel 8 is fixed centrally within the archable element member 5 blanked from the archable element member 5 by the blanking of the two U-shaped slots 9, and these U-shaped slots are fixed. It leaves two connecting webs 10 arranged symmetrically in between. The connecting web 10 forms the form of a pivot axis which is arranged parallel to the edge 6 of the archable element member 5 with respect to this panel 8. In the operation according to FIG. 1, the connecting web 10 is fixed symmetrically with respect to the panel 8. In other words, the panel 8 is subdivided into two equal partial panels 11, 12-the upper panel 11 and the lower panel 12. The free ends of each of the partial panels 11, 12 comprise a rim 13 which is folded back or bent.

The archable element member 5 is provided with adjusting means for setting and reconditioning the arch of the member and comprises a Bowden cable structure 14 which is embodied in this embodiment. The bowed cable structure 14 comprises a cable 15, the cable being fixed to the rebate 17 by an end comprising a nipple 16, the rebate being an archable element member 5. It is formed on one of the edges 6 of. The rebate 17 of the upper edge 6 in this embodiment has the form of a rebate 18 for holding the nipple 16 and a slot 19 for inserting the cable 15. At the lower edge 6 on the opposite side, a rebate 17 is provided to hold one end of the sleeve 20 which surrounds the cable 15 of the cable structure 14 that was bowed in the form of a sleeve 21.

In order to adjust the archable element member 5 over distance, here, in order to adjust the level between the lower transverse rod 2 and the intermediate rod 3, the two bow cables 22, 22 in this embodiment. Is provided, the sleeves 23 and 23 'of the cable are mounted to the rebate 17 and the lower transverse rod 2 on the intermediate rod 3 respectively. Each cable 24, 24 ′ is assembled to an archable element member 5, respectively. In this embodiment the end of the cable is suspended on the upper edge 6 of the archable element member 5. By this adjacent arrangement of the cable ends, no level adjustment affects the respective adjusted arch. This only occurs if one of the cable ends is fixed at the top and the other of the cable is fixed at the lower edge 6. Here, level adjustment is performed by applying a force to either the upper or lower cable and the other cable is relaxed to the same extent. Other adjustment means may be employed, for example, using a single bow cable that works in opposition to racks and pinion drives or springs or other optional adjustment mechanisms.

In FIG. 2, a relatively strongly arched archable element member 5 having a curved edge 6 is shown in solid line at the lower end position and in broken line at the upper end. The panel 8 is connected to the archable element member 5 alone along the length L of the connecting rod 10 so that no arch deformation occurs, so that it actually projects vertically, as well as the lower panel 12. The top panel 11 also acts as an elastic flexible means.

An embodiment of the support with the adjustable arch shown in FIG. 3 comprises two longitudinal rods 1 ′, which are supported by the back of the seat (not shown) in a known manner using a fixing element of plastic. Is coupled to. Between these longitudinal rods 1, the middle rod 3 'of the wire is hung in parallel. The upper and lower regions of the archable element member 5 'include hook-shaped bends 25 or bent or folded regions, which flexures 25 or folded regions extend rearward and are respectively intermediate It serves to receive the rod 3 '. That is, they fasten the archable element member 5 'to the structure 4' formed by the longitudinal rod 1 and the intermediate rod 3 ', which aims to hook the intermediate rod 3' to the hooked bend. (25) It is for insertion. If the arch of the archable element member 5 'increases, the minimum tension of the transverse rod 3' on which the support member is suspended occurs. For the transverse reinforcement of the edges 6, 6 ', continuous transverse corrugations are provided. The two panels 27, 28 arranged symmetrically with each other in the archable element member 5 ′ are arranged with respect to each other such that the central area 29 is retained between the panels. At this spacing 29 in the region of the upper and lower edges 6, 6 ′, one end of the sleeve 20 of the cable structure 14 or the cable ( A rebate 17 is provided to secure one end of 15). The upper rebate 17 is in the form of an eyelet that penetrates the rebate and acts to hold the nipple 16 of the cable 15. The rebate 17 holding the end of the sleeve 20 of the bowed cable structure 14 is shown in more detail in FIG. 8 and described again below.

The panels 27, 28 of this embodiment according to FIG. 3 are of asymmetrical construction, while the portion 31 of the upper panel is longer than the lower panel portion 32, on the other hand the lower panel compared to the upper panel portion 31. The portion 32 is wider in width. The panels 27 and 28 also include rims 13 which are folded or bent at the edges upwards and downwards. The panels 27 and 28 shown are in an optional desired arrangement, which may be provided in the form of beads, ribs, or slots, with or without curved edges that increase stiffness. Reinforcing and / or weakening structures to increase flexibility. An example of the strengthening or weakening of the archable element member 5 'and the panels 27 and 28 in this embodiment is provided in a linear manner, although other structures are possible, such as for example wedge shapes. In this way, the elastic bending properties of the panels 27, 28 and the archable element member 5 ′ can be configured in an optional manner.

The panels 27, 28 are separated by slots 9 which leave the connecting web 10 in place according to the embodiment described in FIGS. 1 and 2, and are separated from the archable element member 5 ′ or are linear. It is connected to the archable element member along the axis. This reinforcement or weakening of the panels 27, 28 may be provided continuously at the axis of the connecting web 10 or may be interrupted, in which case a flat or stamped intermediate web 34 remains. It is also possible to increase the rigidity of the panels 27 and 28 by stiffening the longitudinal edges 35 adjacent to the slots 9 separating the panels 27 and 28 by bending, beading or the like. A corresponding possibility arises for the archable element member 5 ′, which is provided along the outer longitudinal edge 35 ′ bent around the flange or bead and also in the ribs or beads of the central portion 29. By this method and the particular local structure of the reinforced or weakened structure, the arching properties of the archable element member 5 ', as well as the elastic properties of the upper and lower panel portions 31 and 32, are influenced by any preferred method. . This is true for the length L and size S of the connecting webs 10, 34, for the width B of the slot 9, and for the size of each of the upper and lower panel portions 31, 32. The same works for.

4 illustrates the selection of some of the various structures and designs of panels 8, 27, 28. The embodiment of the panel in FIG. 4A includes beads and ribs with slot shaped openings. 4 b shows a flat panel excluding the curved portion 13. In FIG. 4C the panel is shown as a longitudinal extension 36 connected to each panel, for example by riveting 37 or a strong adhesive bond. In the embodiment shown in FIG. 4 d, the two panels extend longitudinally by a stirrup piece 36 ′ and are thus connected to each other. Each extension can be bent from a wire-shaped material, for example in the form of blanked insertion holes or inserted into or fastened to fastening means 37 'provided in the panel by a separate fastener.

5 and 6 are similar to the embodiment described with reference to FIG. 3, but the central middle area 29 has a different configuration. In the middle middle region 29, there is a groove 38 which acts for the mounting and passage of the cable 15 of the bowed cable structure 114 for adjusting the arch of the panel 5 'of the arch. A nipple 16, which is provided and assembled at the end of the cable 15, is suspended from the rebate 17 at the upper edge 6 of the archable element member 5 ′. In particular, in the top region of the arch, the grooves 38 are discontinuously configured and open to the outside, and more particularly open so as not to be affected by the flexibility of the arch in the region. In this central region, the projections 39 serving as longitudinal extensions of the continuous portions of the grooves 38 are optionally provided from both sides and can be bent to act as upper and lower guides for the cable 15. . At the lower edge 6 ′, a rebate 17 ′ is provided at the end of the groove 38 to receive the end of the sleeve of the bowed cable structure 14. The rebate 17 'is in the form of a bore that penetrates from the end of the groove 38 to the right and allows passage of the nipple 16 and the cable 15, but holds the sleeve 20 in preparation for sliding. do. In a similar manner, passages for the nipples 16 and the cables 15 are provided at the upper ends of the grooves 38.

Fig. 7 schematically shows the functional mode of the above-mentioned support, the support at the starting position shown in Fig. 7A is not an arch but has a maximum arch in b of Fig. 7, the support 40 has a lid 40, more In detail, upholstery may be provided. From a of FIG. 7 a large surface area of contact of the cover 40 to the entire support is evident at the starting position. However, the flexible support of the large surface area and elasticity at the maximum arch is supplied to the cover 40 by the panel, which results in a significantly improved seat comfort compared to the prior art, and simply a rigid non-flexible arch is effective Effective only in linear mode.

FIG. 8 illustrates a rebate 17 for the sleeve 20 of the bowed cable structure 14 described above in connection with the embodiment of FIG. 3. The solution shown is in the form of a web 41 whose lower end is connected to an archable element member 5 ', the free end of which is bent at approximately right angles along the first fold or bend line 42. About 90 ° rearward in such a way that a type of spring clamp is formed in the form of a web 41 connected to the free end, folded along the second line 43 at an angle exceeding 90 °. It is bent along three lines 44 (see b of FIG. 8). The clamp, on the other hand, comprises a passage for the cable 15 in the area between the lines 42 and 43, optionally also includes a passage for the nipple (not shown) mounted at the end, and the sleeve 20 is inserted. And an opening 45 configured to remain in the same and laterally as above when in contact support with respect to the web 41 (see b of FIG. 8).

9 shows a modification of the web that accommodates the end of the sleeve 20 of the bowed cable structure 14. For this purpose, the web 41 ′ at its free end comprises two slots 46 provided at a common height. To secure the sleeve 20, the sleeve 20 is arranged longitudinally on the web 41 ′ so that the end of the sleeve 20 is in the region of the slot 46, the web 41 ′ is 180 It is bent around the sleeve 20 in a clamping shape, ie to wrap the sleeve above °. Thus, as shown in FIG. 9C, the edge 47 of the web 41 ′ held over the slot 46 does not interfere with the free movement of the cable 15 but the U-shaped edge covers the sleeve end. It is compressed in a U-shaped way to ensure a fixed position.

The illustrated embodiments thus provide the particular advantage of being able to be stamped from a thin elastic material in a single processing step. For example, such additional blanking or modification to the rebate 17 can be integrated with a stamping procedure such that a single processing step is required, in particular the additional blanked structure and the ribs, bends, It is of particular advantage to use sheet metal, in particular steel sheet, if deformation to beads or the like is provided. However, it is also possible to produce such a support from a piece of plastic from a piece of plastic in the pressing process, for example in the step of providing a region of greater and / or smaller thickness, and also stamping such support from a thin sheet of plastic material. It is possible. It is optionally possible here to provide the thicker or thinner areas required in the second processing step. The whole process is automated and therefore carried out in a way that reduces costs. When using thin sheet material, such as steel sheet, for example, the thickness of the material can be selected according to the required properties, which completely eliminates the appropriate and strengthened construction. Other possibilities of influencing the properties of the support, more particularly the elastic panel, are described above.

Claims (16)

A support for various seats and beds with adjustable arches, wherein the structure of the support comprises an elastic arch element and adjustment means for setting and re-adjusting the arch of the arch element, The arch element comprises at least one panel 8; 27 having an essential panel-shaped archable element member 5; 5 ′ and two free ends folded rearwardly and fixed to the archable element member over a small surface area; 28) and a fixing element (7; 25; 25 ') stamped from a one-piece resilient flexible sheet material and for securing the archable element member to the members of the sheet or bed structure. ), The fastening element is characterized in that it provides a relative movement in which the fixed both edges (6,6 ') of the element member (5,5') are proximate and spaced apart from one another. 2. The archable element member (5, 5 ') according to claim 1 comprises fixing elements (7, 25, 25') for securing the archable element member to the structure of the seat or bed, The securing element is characterized in that it provides a relative movement in which the fixed both edges (6,6 ') of the archable element member (5,5') are proximate and spaced apart from one another. 3. The archable element member (5; 5 ') according to claim 1 or 2 comprises one end of the sleeve (20; 23, 23') of the bowed cable structure (14) and the cable (15; 24). And a rebate (17) receiving one end of the 24 'and forming part of the adjustment means for the arch of the archable element member (5; 5'). 3. A support according to claim 1 or 2, characterized in that it comprises two panels (27, 28) arranged symmetrically in parallel with each other. 3. Support according to claim 1 or 2, characterized in that the respective panels (8; 27, 28) are asymmetrical. 3. The support according to claim 1, wherein the respective panels (8; 27, 28) are asymmetrically connected to the archable element member (5; 5 ′; 5 ″). 4. 3. The archable element member (5,5 ') and each of the panels (8; 27,28) or any one of them is a rigid structure and a reinforcing structure and a blank area or any of these. A support comprising any one. 8. A support according to claim 7, wherein ribs, beads, corrugated regions and edge flanges or any one of these, or bent regions, are provided to act as either the rigid structure and the reinforcing structure or any of them. 3. The panel of claim 1, wherein each of the panels 8; 27, 28 is archable by a connecting web 10 having a variety of thicknesses S and a variety of lengths L, or any one thereof. Support characterized in that it is connected to the element member (5, 5 '). 4. Support according to claim 3, characterized in that the rebate (17) is blanked in the form of a web (41; 41 ') and is locally connected to the archable element member (5, 5'). 4. Support according to claim 3, characterized in that the cable (15) of the adjusting means passes at least a portion in the passage along the archable element member (5 '). 3. Support according to claim 1 or 2, characterized in that the respective panels are connected to longitudinal extension means (36,36 '). 3. A support according to claim 1 or 2, characterized in that each panel (8; 27, 28) comprises at least two free ends (13) with folded edges. The supporting part according to claim 1 or 2, wherein the supporting device is capable of moving forward and backward at a predetermined distance in the seat or the bed. A support according to claim 1 or 2, characterized in that it is connected to the seat or bed by a plastic fixing element. The support according to claim 1 or 2, wherein the support is a waist support.