FR3088184A1 - SEAT WITH SEAT TENSIONING DEVICE - Google Patents

Abstract

The invention relates to a seat (1) comprising a seat frame (6) comprising at least a first crossmember (61); a seat (7) of stretchable material comprising at least one first edge (71), positioned on the first crosspiece (61) of the seat frame (6), characterized in that the seat (1) comprises at least one device for tensioning comprising at least one stiffening member (81) arranged on the first edge (71); at least one elongated guide member (82) configured to cooperate with the stiffening member (81), the guide member comprising a longitudinal housing (83) shaped to at least partially house the stiffening member (81), the first edge (71) of the seat (7) and at least a portion of the first cross member of the seat frame, the guide member (82) being configured to press and lock the first edge of the seat and the member stiffening against the first crosspiece.

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates to the field of furniture and more particularly the field of seats comprising a seat in stretchable and stretched material. The present invention relates to seats intended for outdoor or indoor use.

According to the invention, the term seat means an object for domestic use to sit one or more people, comprising at least one seat. Depending on the uses, the seat can have in addition to a seat, a backrest, legs, armrests or a single seat. A seat within the meaning of the invention can therefore be a chair, a sun lounger, a deckchair, a sofa, a bergère, an armchair, a sofa, a stool, a bench or even an ottoman.

TECHNOLOGICAL BACKGROUND OF THE INVENTION

Generally, it is necessary to fix and tighten the seat of a seat when the latter is made of a flexible material and mounted directly on a frame or legs supporting only the ends or the periphery of said seat. If the seat is not stretched, you cannot sit on it. Conventionally, the seat is held taut by screws fixed on the periphery of the seat and which secure the latter to the frame or the base of the seat. The screws pass directly through the seat material, which damages the seat material in a localized manner and which can weaken the holding of the seat if too much weight is applied to the seat causing tears and accelerated wear . In addition, the screwing does not control the tensioning of the seat during the first assembly or if the latter becomes slack over time. Furthermore, the fixing of the seat is not always optimal because it is difficult to visualize the locations dedicated to screwing through the fabric and thereby effect a good positioning of the stretched seat and the screws now l 'tight seat.

OBJECT OF THE INVENTION

The object of the invention is to remedy all or part of the aforementioned drawbacks by proposing a seat the tensioning of the seat of which is simple, intuitive, rapid, reliable and which makes it possible to maintain the integrity of the seat over the course of the time.

To this end, the subject of the invention is a seat comprising:

a seat frame comprising at least a first cross member and a second cross member positioned at a distance from each other and delimiting a seat space, a seat made of stretchable material shaped to at least partially cover the seat space delimited by the cross members of the seat frame, the seat comprising at least a first edge and a second opposite edge, the first edge being positioned on the first cross member of the seat frame and the second edge being positioned on the second cross member of the frame seat, characterized in that the seat comprises at least one tensioning device comprising:

at least one stiffening member arranged on the first edge, the stiffening member extending at least partially along the first edge, at least one elongated guide member configured to cooperate with the stiffening member, the guide member comprising a longitudinal housing shaped to at least partially house the stiffening member, the first edge of the seat and at least a portion of the first cross member of the seat frame, the guide member being configured to press and block the first edge of the seat and the stiffening member against the first crosspiece.

Advantageously, the edge of the seat retains its integrity thanks to the stiffening member and to its cooperation with the guide member which does not damage the material of the seat when it is placed against the first cross member. In addition, the tensioning of the seat is carried out uniformly over the length of the first edge thanks to the elongated shape of the housing of the guide member. Finally, the advantage of this configuration is to propose a removable tensioning device and therefore a removable seat, making it possible to control the tensioning of the seat and possibly to be able to readjust this tension over time.

Advantageously, the guide member allows the mechanical retention of the assembly before fixing and tensioning.

According to a characteristic of the invention, the first edge of the seat and preferably, at the first edge and the second edge of the seat, comprises a slide formed by a folding of the end of the edge of the seat, the slide being shaped to house the stiffening member within it.

According to a characteristic of the invention, the stiffening member is a rod. The stiffening member can be made of metal or plastic or wood.

According to a characteristic of the invention, the seat is made of a stretchable material, for example a canvas which may be made of synthetic, natural material, or a mixture of the two. In particular, the seat can be made for example of polyester sheathed in polyvinyl chloride.

According to a characteristic of the invention, the housing is in the form of a longitudinal groove.

According to the invention, the housing of the guide member is arranged in an upper portion of the guide member, relative to the direction of mounting of the guide member on the cross member of the seat frame.

Preferably, the housing comprises stiffening spacers arranged in the housing transversely with respect to a longitudinal direction in which the guide member extends.

Advantageously, the spacers make it possible to stiffen the walls of the guide member. In addition, the spacers are shaped to match on one portion the shape of the stiffening member and on another adjacent portion to match the shape of a lower portion of the first crosspiece.

According to a characteristic of the invention, a first housing part of the housing of the guide member is shaped to cooperate with the stiffening member and the first edge of the seat.

According to a characteristic of the invention, a second housing part of the housing of the guide member is shaped to cooperate with the first cross member, and particularly with a lower portion of the first cross member.

According to a characteristic of the invention, the guide member comprises at least one projecting indexing lug extending in a direction substantially perpendicular to the longitudinal direction in which the guide member extends.

Advantageously, the at least one indexing lug assists in positioning the fixing screws intended to fix the guide member on the first crosspiece. In addition, as the indexing lug penetrates the bore of the first cross member, the seat material gradually stretches and stretches since it is driven by the indexing lug. Indeed, according to a characteristic of the invention, the first edge and preferably the first and the second edge comprises at least one hole for passage of the indexing lug.

According to a characteristic of the invention, the indexing lug has a frustoconical shape, which allows insertion through the through hole of the edge of the seat, facilitated and progressive.

According to a characteristic of the invention, the guide member comprises a plurality of indexing pins distributed over the length of the guide member, which makes it possible to distribute the forces uniformly along the guide member and to guide correctly positioning of all the fixing screws and allowing their insertion into the orifices of the cross member almost simultaneously in order to gain assembly speed.

Advantageously, the indexing pins are distributed regularly over the length of the guide member. Preferably, the indexing pins are distributed so as to be each positioned opposite a bore formed on the cross-member. The pins thus inserted in the cross member, allow mechanical retention of the guide member before it is secured by screwing.

According to a characteristic of the invention, the indexing pins are distributed over the length of the guide member in the housing and alternately with orifices intended for the passage of fixing screws.

According to a characteristic of the invention, at least the first cross member, and preferably each cross member of the seat frame, comprises at least one hole, and preferably a plurality of holes, shaped to receive at least one indexing lug or a screw of fixation within it.

According to a characteristic of the invention, the guide member comprises a portion opposite the housing, comprising a first face, preferably substantially planar, and a second face arranged angularly, preferably substantially perpendicularly, relative to the first face, an angular leave being formed at the intersection of the first face and the second face. Advantageously, this portion allows the stacking of one seat on another and has a spacer function allowing rapid and guided stacking. Indeed, the upper portion of a crosspiece of a first seat is intended to cooperate and more particularly to be housed in the portion opposite to the housing of the guide member of a second seat, said second seat being intended to be stacked on the first seat.

According to a characteristic of the invention, each guide member further comprises a hook-shaped end allowing it to be hung on an upright of the backrest or on a base at the level of the seat frame.

According to a characteristic of the invention, the seat is equipped with a second tensioning device according to the invention arranged at the second cross member of the seat frame.

According to a characteristic of the invention, the tensioning devices are identical and symmetrical.

BRIEF DESCRIPTION OF THE FIGURES

The invention will be better understood from the description below, which relates to an embodiment according to the present invention, given by way of nonlimiting example and explained with reference to the appended schematic figures. The attached schematic figures are listed below:

Figure 1 is a perspective view of a seat according to the invention, Figure 2 is a perspective view from below of the seat according to the invention shown in Figure 1, Figure 3 is a side view of the seat illustrated in Figure 1, Figure 4 is a perspective view of a stack of seats according to the invention, Figure 5 is a perspective view from a first point of view of the guide member of the tensioning device according to Figure 6 is a perspective view from a second point of view of the guide member of the tensioning device according to the invention, Figure 7 is a perspective view from below of the guide member of the tensioning device tensioning according to the invention, Figure 8 is a cross-sectional view along the axis AA shown in Figure 7, Figure 9 is a detail sectional view of a first step of mounting the tensioning device according to the invention, Figure 10 is a detailed sectional view of a second step of my tage of the tensioning device according to the invention, Figure 10 is a detail sectional view of a third step of mounting the tensioning device according to the invention.

DETAILED DESCRIPTION OF THE FIGURES

The seat 1 according to the invention is illustrated in FIGS. 1 to 4. This seat 1 is a chair in the example illustrated but obviously the invention is not limited to this single example, the seat according to the invention can take n 'whatever shape for example, it can be a sofa, a shepherdess, an armchair, a sofa, a stool, a bench or even an ottoman.

According to the example illustrated in Figures 1 to 4, the seat 1 according to the invention comprises a backrest 2, two legs 3, 4 each comprising two legs 5. In addition, the seat 1 comprises a seat frame 6 and a seat 7. The seat frame 6 comprises, as can be seen in particular in FIG. 2, at least a first cross-member 61 and a second cross-member 62 opposite to the first cross-member 61 and positioned at a distance from the first cross-member 61 so as to delimit a seating space 63.

The seat 7 is made of stretchable material and shaped to at least partially cover the seat space 63 delimited by the crosspieces 61, 62 of the seat frame 6. For example, the seat 7 is a canvas which can be in synthetic, natural, or a mixture of both.

As can be seen in particular in FIG. 1, the seat 7 comprises at least a first edge 71 and a second edge 72 opposite, the first edge 71 being positioned on the first cross member 61 of the seat frame 6 and the second edge 72 being positioned on the second crosspiece 62 of the seat frame 6 as illustrated in FIG. 2. Advantageously, each crosspiece 61, 62 of the seat frame 6, comprises a plurality of bores shaped to receive either an indexing lug 85 or a fixing screw 9 therein, as will be described in the following description.

The seat 1 according to the invention further comprises two identical tensioning devices 8, each positioned respectively of the first cross member 61 or of the second cross member 62 of the seat frame 6, as visible in FIG. 2. Each setting device in tension 8 is fixed to a cross-member 61, 62 of the seat frame 6 by fixing screws 9. Each cross-member 61, 62 of the seat frame 6, comprises at least one hole 63, and preferably a plurality of holes 63 , shaped to receive at least one indexing lug 85 or a fixing screw 9 within it allowing respectively the mechanical retention and the joining of the tensioning device 8 on the seat frame 6.

Each tensioning device 8 comprises a stiffening member 81 arranged on an edge 71, 72 of the seat 7. More particularly, the end of each edge 71, 72 of the seat 7 is folded so as to form a slide 73 in which the stiffening member 81 is inserted. The stiffening member 81 is preferably a rod but can be in any other form suitable for being inserted in the slide 73 or suitable for being secured to the end of the edge 71, 72 of the seat 7. Advantageously, the stiffening member 81 extending at least partially and preferably all along the edge 71, 72. The stiffening member 81 of the tensioning device can be viewed at Figures 9 to 11.

The tensioning device 8 further comprises an elongated guide member 82 configured to cooperate with the stiffening member 81. The guide member 82 is illustrated in detail in Figures 5 to 8. As shown in Figure 11, the member guide 82 of the tensioning device 8 is configured to press and block the edge 71, 72 of the seat 7 and the stiffening member 81 against a cross member 61, 62 of the seat frame 6.

In the example illustrated in Figures 7 to 11, the guide member 82 comprises a longitudinal housing 83 shaped to at least partially accommodate the stiffening member 81, an edge 71, 72 of the seat 7 and a portion of the cross 61, 62 corresponding to the edge 71, 72. According to the invention, the housing 83 of the guide member 82 is arranged in an upper portion of the guide member 82 and is in the form of a longitudinal groove extending preferably over the entire length of the guide member 82.

The housing 83 of the guide member 82 comprises a first housing part PI of the housing 83 of the guide member 82 is shaped to cooperate with the stiffening member 81 and an edge 71, 72 of the seat 7 and a second housing P2 of housing 83 of the guide member 82 is shaped to cooperate with the cross member 61, 62, and in particular with a lower portion of the cross member 61, 62, as illustrated in FIG. 8.

In the example illustrated in FIG. 7, the housing 83 comprises stiffening spacers 84 arranged in the housing 83 transversely with respect to a longitudinal direction XX in which the guide member 82 extends. The spacers 84 are shaped to conform to a portion PI the shape of the stiffening member 81 and on another adjacent portion P2 to match the shape of a lower portion of the cross member 61, 62.

In addition, as illustrated in FIG. 7, the guide member 82 comprises pins 89 configured to grip the first edge 71 of the seat 7. These pins 89 are preferably positioned around the orifices 87.

According to the invention, the guide member 82 is also configured to guide the insertion of the fixing screws 50 into the cross-member 61, 62 and thus ensure the fixing of the seat 7 on the seat frame 6 and the maintenance of the tensioning of the seat 7.

To this end, the guide member comprises at least one indexing lug 85, and more preferably a plurality of indexing lugs 85, as illustrated in particular in FIG.

7. The indexing pins 85 are positioned in the housing 83 along the length of the guide member 82. The indexing pins 85 are projecting and extend in a direction substantially perpendicular to the longitudinal direction XX in which s extends the guide member 82.

According to the invention, each edge 71, 72 of the seat 7 comprises at least one through hole 74 through which passes an indexing lug 85, as illustrated in FIG. 9 in particular.

Furthermore, the guide member 82 is also configured to allow a stable and simple stacking of seats according to the invention.

To this end, the guide member 82 comprises a portion 86 opposite the housing 83, comprising a first face 86a substantially planar and a second face 86b arranged angularly with respect to the first face 86a, an angular leave being formed at the intersection of the first face 86a and the second face 86b. Advantageously, this portion 86 allows the stacking of a seat 1 according to the invention on another as illustrated in FIG. 4. The first face 86a is shaped to receive an upper portion of a crosspiece 61, 62 of a first seat 1 is intended to cooperate and more particularly to be housed in the portion 86 opposite the housing 83 of the guide member 82 of a second seat 1, said second seat 1 being intended to be stacked on the first seat 1 as illustrated in FIG. 4.

According to the invention, the guide member 82 comprises a plurality of fixing holes 87 through which the fixing screws 9 pass in order to secure the guide member 82 to a crosspiece 61, 62. These fixing holes 87 are intended to be positioned opposite the holes 63 households on the sleepers 61, 62.

According to the invention, each guide member 82 further comprises a hook-shaped end 88 allowing it to be hung on an upright of the backrest 2 or on a base 3, 4 at the level of the seat frame 6, as illustrated in FIGS. 5 to 7.

Furthermore, it is possible to use a mounting tool (not visible) which cooperates with cavities 90 formed on the guide member 82 on the portion opposite the housing 83 and preferably on the second face 86b.

The mounting of the tensioning device 8 of the seat 6 will now be described with reference to FIGS. 9 to 11. The mounting is described for a single tensioning device 8 on the first crosspiece 61 with the first edge 71 of the seat 7. It is obvious that this arrangement is applicable to the second tensioning device 8 positioned on the second crosspiece 62.

In a first step illustrated in FIG. 9, the guide member 82 is positioned relative to the first edge 71 of the seat 7, by inserting the indexing lugs 85 into through holes 74 formed on the first edge 71 of the 'seat 7. In a variant not illustrated, the screw 9 is already mounted in the guide member 82 so that the screw head 91 is pressed against the first face 86a of the portion 86 opposite the housing 83 of the guide member 82 and so that the body 92 of the screw 9 extends in the housing 83 substantially perpendicularly.

In a second step illustrated in FIG. 10, the indexing lug 85 is pushed through the through hole 74 until the stiffening member 81 surrounded by the slide 73 of the first edge 71 of the seat 7 is housed in the first housing portion PI of the housing 83. In addition, the first edge 71 of the seat is gripped by the pins 89 of the guide member 82 allowing the first edge 71 to be held in position. In addition, the fixing screw 9, also penetrates an adjacent through hole 74 formed on the first edge 71 of the seat 7. In addition, a wall 83a of the housing is positioned in abutment against the first cross-member 61. In this step, the lug indexing 85 reaches a bore 63 of the first cross member 61.

In an intermediate step, the guide member 82 will be moved in a rotational movement, in particular thanks to the support of the wall 83a of the housing 83 on the crosspiece 61 so that as the indexing lug 85 penetrates the bore 63 of the first cross member 61, the material of the seat 7 stretches and tends gradually.

In a third step illustrated in FIG. 11, the body 92 of the fixing screw 9 is fully inserted in the cross member 61, the indexing lug 85 is partly retracted into the cross member 61, a lower portion of the cross member 61 is housed in the second housing portion P2 of the housing 83 of the guide member 82. It is then possible to secure the tensioning device 8 by tightening the fixing screw 9, the tightening completing the tensioning of the seat 7 and its permanent retention.

In a variant not shown, the screw 9 can be arranged in the guide member 82 from the first mounting step.

The seat is advantageously removable by loosening the screws and removing the guide member 82.

Of course, the invention is not limited to the embodiment described and shown in the appended figures. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.

Claims (9)

1. Seat (1) comprising: a seat frame (6) comprising at least a first crossmember (61) and a second crossmember (62) positioned at a distance from each other and delimiting a seat space (63), a seat (7) made of stretchable material shaped to at least partially cover the seat space (63) delimited by the crosspieces (61, 62) of the seat frame (6), the seat (7) comprising at least a first edge (71) and a second opposite edge (72), the first edge (71) being positioned on the first crossmember (61) of the seat frame (6) and the second edge (72) being positioned on the second crossmember (62) of the seat frame seat (6), characterized in that the seat (1) comprises at least one tensioning device comprising: at least one stiffening member (81) arranged on the first edge (71), the stiffening member (81) extending at least partially along the first edge (71), at least one elongated guide member (82) configured to cooperate with the stiffening member (81), the guide member (82) comprising a longitudinal housing (83) shaped to at least partially house the stiffening member (81), the first edge (71) of the 'seat (7) and at least a portion of the first crosspiece (61) of the seat frame (6), the guide member (82) being configured to press and block the first edge (71) of the seat ( 7) and the stiffening member (81) against the first crosspiece (61). 2. Seat according to claim 1, in which the first edge (71) of the seat (7) comprises a slide (73) formed by a folding of the end of the edge (71) of the seat (7), the slide (73) being shaped to house the stiffening member (81) within it. 3. Seat according to any one of claims 1 or 2, in which the seat (7) is made of a stretchable material, for example a canvas which may be made of synthetic, natural material, or a mixture of the two. 4. Seat according to any one of claims 1 to 3, wherein a first housing part (PI) of the housing of the guide member (82) is shaped to cooperate with the stiffening member (81) and the first edge (71) of the seat and a second housing part (P2) of the housing of the guide member (82) is shaped to cooperate with the first cross member (61), and particularly with a lower portion of the first cross member ( 61). 5. Seat according to any one of claims 1 to 4, wherein the guide member comprises at least one indexing lug (85) projecting extending in a direction substantially perpendicular to the longitudinal direction in which extends l 'guide member (82). 6. Seat according to claim 5, in which the guide member (82) comprises a plurality of indexing lugs (85) distributed over the length of the guide member (82), 7. Seat according to any one of claims 5 or 6, in which the first crosspiece (61) comprises at least one hole (63), and preferably a plurality of holes (63), shaped to receive at least one lug d indexing (85) or a fixing screw (9) therein. 8. Seat according to any one of claims 1 to 7, in which the guide member comprises a portion opposite (86a, 86b) to the housing, comprising a first face (86a) and a second face (86b) angularly arranged by relative to the first face (86a), an angular leave being formed at the intersection of the first face (86a) and the second face (86b), said portion opposite the housing being configured to receive a portion of cross member (61) d 'another seat (1). 9. Seat according to any one of claims 1 to 8, wherein the seat is equipped with a second tensioning device according to the invention arranged at the second crosspiece (62) of the seat frame (6 ).