SE1551019A1 - Back rest assembly - Google Patents

Abstract

ABSTRACT This invention relates to a back rest assembly (1) for outdoor use, comprising a supportstructure (2,4) and a backrest fabric (3), Wherein the supporting structure comprises atleast four tubes (20, 21, 22, 23), Wherein tWo of the tubes (20, 21) are arranged in theouter channels (31, 32) of the back rest fabric (3) on opposite sides of the backrest part(3) so that they form together With the back rest fabric (3 0) an upWardly standingbackrest part (3), and Wherein the other tWo tubes (22, 23) are arranged so that theyform a bottom support for the backrest part (3); Wherein the support structure (2, 4)further comprises a transVersal carrier unit (4) arranged to provide a mounting for oneend of each of the four tubes (20, 21, 22, 23), Wherein that the transversal carrier unit(4) forms a form stable body, preferably of a therrnoplastic material, and that thetransVersal carrier unit (4) has openings (40, 41, 42, 43) for mounting of one end ofeach one ofthe four tubes (20, 21, 22, 23).

Description

BACK REST ASSEMBLY TECHNICAL FIELD This invention relates to a back rest assembly for outdoor use, comprising a supportstructure and a backrest fabric, Wherein the supporting structure comprises at least fourtubes, Wherein tWo of the tubes are arranged in the outer channels of the back rest fabricon opposite sides of the backrest part so that they forrn together With the back rest fabrican upWardly standing backrest part, and Wherein the other tWo tubes are arranged so that they form a bottom support for the backrest part.

STATE OF THE ARTLeisure chairs and back support devices are today usually bulky and /or are oftendifficult to carry. Therefore, many people use simple devices on the beach, i.e. usually Without any backrests.

SUMMARY OF THE INVENTIONIt is the object of the present invention, to solve or at least minimize the above- mentioned disadvantages The object of the invention is achieved by a backrest assembly according to the appended claims.

Thanks to the invention, a backrest assembly (a kind of leisure chair) is provided, Whichcan be easily handled, Which is light in Weight and compact in the fo lded state, so that the backrest arrangement according to the invention is easy to carry/transport.

Moreover, the backrest arrangement of the invention has an inexpensive construction,Which is not based on the conventional, square or rectangular support structure. The costof manufacturing the seat back assembly according to the invention can be kept low.The seat back assembly according to the invention also has the advantage that it has a smaller footprint, especially When transporting Furthermore, the solution according to the invention provides a convenient backassembly prepared in the new design, Which eliminates the need for the presence of a lateral support element for the upper backrest part.

DESCRIPTION OF THE FIGURES In the following the invention will be described in more detail With reference to theaccompanying drawings.

Fig. 1 is a perspective view obliquely from above of a preferred embodiment of a backrest arrangement according to the invention.

Fig. 2 shows a perspective view obliquely from above of a preferred embodiment of a support structure of the invention.

Fig. 3 shows a perspective view obliquely from above and from behind by one end of a preferred embodiment of a support unit according to the invention.

Fig. 4 shows a perspective view obliquely from above and from one end of a preferred embodiment of a support unit according to the invention.

Fig. 5 is a perspective view obliquely from above and from the front, from one end to a preferred embodiment of a carrier unit according to the invention.

Fig. 6 is a perspective bottom view of a preferred embodiment of a carrier unit according to the invention, and, Fig. 7 is a side view of the rear of the carrier unit.

DETAILED DESCRIPTION OF THE INVENTION Figure 1 is a perspective view of a preferred embodiment of a backrest assembly 1according to the invention. The backrest assembly 1 is intended for use in outdoor areas,for example, when staying at a beach. The backrest assembly 1 comprises a supportingstructure 2, 4 and a backrest fabric 30. The support structure comprises four tubes 20,21, 22, 23. Two of the tubes 20, 21 are on the opposite sides of the back rest fabric 30arranged in outer channels 31, 32 incorporated in the fabric arranged in the backrest part3, so that they support an upstanding back part 3. The other two tubes 22, 23 are used asfloor supports for the upright backrest part 3.

Fig. 2 shows that the supporting structure 2 further comprises a transversal carrier unit4, which is so constructed and arranged that it forms an anchorage for one end of eachof the four tubes 20, 21, 22, 23. The transversal carrier unit 4 needs to take the necessary forces when using the seat back assembly 1. The transversal carrier unit 4 is made of a form stable material, such as wood, metal, plastic, such as a polymer, and/ or a composite material, to be able to form a solid construction.

As illustrated in Figures 3, 4 and 5, the transversal carrier unit 4 is preferably made of adurable therrnoplastic material (for example, polyethylene or polypropylene), so that the cost of manufacturing can be kept low (by moulding or injection moulding).

The transversal carrier unit 4 (see Fig. 2 and 3) is provided with openings 40, 41, 42, 43which are provided for securing a respective end of four tubes 20, 21, 22, 23. Two ofthe openings 42, 43 are used for anchoring of two of the tubes 22, 23 horizontally, i.e.arranged so that the two tubes 22 and 23 are in horizontal orientation when attached. In attached form the tubes 22, 23 act as a rear floor support for the backrest part 3.

The other two openings 40, 41 serve for receiving the tubes 20, 21 and are arranged sothat the two tubes 20, 21 can be mounted oriented upwardly. Each of these twoopenings 40, 41 have two receiving options A, B providing two different positions, i.e.two different angle settings for the tubes 20, 21, and also for the backrest 30.

The receiving option in position B cooperates with a side opening 45 (see Fig. 5) in thewall of the support unit 4, whereby a greater inclination angle adjustment for the tubes20, 21 in the backrest 30 is enabled. In this position, thanks to the lateral opening 45, apart of the tube end can protrude into the opening 45, whereby the wall parts of theopening 45 act as a support. With this arrangement, the backrest 30 can be placed in asecond angular position ß (see Fig. 4).

To provide this simple and space-saving arrangement for the tubes 20, 21 in twodifferent angular positions ot, ß and to offer sufficient support surfaces, the twomounting options for the positions A, B are arranged and integrated in the same cavity40, 41. The f1rst receiving option A, which extends into the support unit 4 furtherdownward (than the other B), enables the upright position of the tubes 20, 21, andangles the backrest 30 in a-first angular position ot. For this purpose the respectivesupport surfaces for the tubes 20, 21 are located in the lower part of the support unit 4.The second receiving option is position B, protrudes a flatter angle ß of the tubes 20, 21,having support surfaces which are located further up in the support unit 4.

As shown in Figs. 3 and 4, the support unit 4 in its longitudinal direction, includes alongitudinal opening 46, to accommodate the two tubes 20, 21 in the folded state.

Thereby, it is possible to obtain a compact, easily transportable package in the folded state. Adjacent the ends of the transversal carrier unit 4, this opening 46 has asignif1cantly larger depth, (preferably at least twice as deep) than the depth h in themiddle of the transversal carrier unit 4, which, inter alia, offers the advantage that thecentral part of the transversal carrier unit 4 provides a recess for the users back. Further,protruding parts 47, 48 are arranged at the ends of the transversal carrier unit 4, whichinclude the openings 42, 43 for the attachment of the tubes 22, 23. Conveniently, thelength of the transversal carrier unit 4, is designed so that the tubes 22, 23 can beaccommodated between the protruding parts 47, 48 in order to forrn a compact package in the collapsed state.

The transversal carrier unit 4 preferably comprises a recess, which allows storing of thetubes 20, 2l in the collapsed state. Further, the tubes 20, 2l, 22, 23 (see Fig. 7) are pairwise held together by an elongated elastic element 5, via a channel 49 which connectsthe openings 40/42, 4l/43 to each other so that the tubes 20, 2l, 22, 23 are alwaysconnected to the support unit 4, but in a way that makes it possible in a simple way andmanner, to positioning the tubes 20, 2l, 22, 23 in the various operating positions. The elastic member 5 may for example be a rubber band.

It is apparent from the above description that the transversal carrier unit 4 is an essentialelement of the invention to enable the functionality of the seat back assembly accordingto the invention, with its significant benefits, including, the compact construction, thecompact transportation facility and providing both sitting as also lying positions. The shape of the transversal carrier unit 4 can be described as a shaped body piece.

Thus, transversal carrier unit 4 differs signif1cantly from the cross member unitscommonly used (comprising for example only one tube that is made of a tube with thesame mass as the support tubes). In another embodiment of the invention, thetransversal carrier unit 4 also, at least partially, can be tubular shaped to provide thebasic function of the invention, although this is not so space and weight saving, as the above-described preferred embodiment, a moulded single piece body.

As shown in Fig. 6, the transversal carrier unit 4 is preferably designed thin-walled andhas an M-shaped cross-section, i.e. with four walls 4 ', 4' ', 4' ", 4 " "that essentiallyextend vertically, which perrnits an advantageous flexural stability. To enable evenbetter stability and strength, support plates may be arranged between the walls in the transverse direction.

Furthermore, many other changes are available that can meet the object of the invention,for example, the structure of the transversal carrier unit 4 made in several parts, Which When assembled form the basic body.

The connection With the rubber bands 5 offers the advantage that no connectionelements such as screws, nuts, etc. must be used, leading to a further Weight reduction of the device according to the invention.

This design also minimizes the risk that functions and design of extemal influences,such as by the action of sand, gravel and Water (particularly salt Water), are negativelyaffected.

Thanks to the design according to the invention it provides additional comfort, becauseof no transversely extending hard supporting parts are needed at the upper side of thebackrest 30.

According to a preferred embodiment, tubes are of durable, corrosion-resistant material(e. g. stainless steel) With an outer diameter of 10-20 mm, a Wall thickness of 1-2 mm, alength of the tubes 20, 21 of the backrest 30 of 350- 400 mm and a length of the tubes22, 23 of the bottom support 200 to 250 mm. The support unit 4 preferably has a lengthof400-500 mm, a height H of 60-80 mm at the ends and a height h in the middle of 30-40 mm and a Weight of 300-400 g.

In a collapsed or folded state a compact unit is formed With a length corresponding tothe support unit 4 and a cross-sectional dimension of less than 120 mm (100 mm diameter) and With a total Weight (With tissue) of less than 1.5 kg, preferably about 1 kg.

LIST GE REFERENCE NUlX/ÉBERS 0 1 Back assembly'W 1 “ _ .

Q 2 Ciarrying structure ß 3 Backrest part ß 4 Cross inemlber unit ß 4 ', 4' ', 4' ", 4 " " WallsQ 5 Elastic element ß 20, 21, 22,, 23 'Ifubes 3G Backrcst íàbríc 31, 132 Ûlltfii' channæis ofths Éfiackrest 'fêibric 304G, 4-1, 42? 43 Ûíffcnings 45 Sida opening 45 Longítudínaí opening 47, 48 Protruding parts A, B Pavsitiøïx øptionís før tubes h Depth in the micïáíe offiïe suppßfi unit 4 H Deptlï Of the Ûpfsning 46

Claims (6)

1. A back rest assembly (1) for outdoor use, comprising a support structure (2,4) and abackrest fabric (3), Wherein the supporting structure comprises at least four tubes (20,21, 22, 23), Wherein tWo of the tubes (20, 21) are arranged in the outer channels (31,32) of the back rest fabric (3) on opposite sides of the backrest part (3) so that they formtogether With the back rest fabric (3 0) an upWardly standing backrest part (3), andWherein the other tWo tubes (22, 23) are arranged so that they form a bottom support forthe backrest part (3); Wherein the support structure (2, 4) further comprises a transversalcarrier unit (4) arranged to provide a mounting for one end of each of the four tubes (20,21, 22, 23), characterized in that the transversal carrier unit (4) forrns a forrn stablebody, preferably of a therrnoplastic material, and that the transversal carrier unit (4) hasopenings (40, 41, 42, 43) for mounting of one end of each one of the four tubes (20, 21,22, 23).

2. The. back assembly detiiietl in claiiii l, characterizetl in that each one of tyvo oftlieripeniiigs (40, 41), have tvuo receiying taciiities (A, B) for' the tubes ( 120, 2l), to provide tvvo flifiieireiit angulai' positions (o. ß,) iifthe talies (20, Zl) iifthe 'backrest part (3).

3. The back assembly' according to clairn 2, cliaracterized in that one of the receiyiiigifacilities (B) ibr the tiibes (20, 21) eooifiefrittes vvith a, side opening (45) in the tvail ofthe transversal carrier iinit (4).

4. The back assembly according to claiiii l. 2 or 3. charatïterized in that the trarisyniàrsalttarrier ariit (4) is prrtividefd in its ion gitudiiial riiifeetirtin. yvitli a, longitiidinfal openirig (46) Which is diinensioiied so that it can receive at least ttvo of the tiiibes (20, 21, 22, 23).

5. The back assembly' according to clairn l, 2 or 3, tsharacteirizetl in *that ”tlieë ttibes (20,21, 22, 23) at eaeli end ofthe traiiswfafrse carrier unit (4) are (pair Wi se :teirineitted by rtri eltingated elastic element (S).

6. The: back assembly aetïoirdiiig to claiin characterizfzd in that the elastic elenient (ii)thirfoiitgh. an opening (49) that iiiterconriect the tvi/o cafl/ities (40,/42, lll/43) at each end of the transVersa1 carrier unit (4).