CN1136268A - a seat that hinges the back of the seat to form a seat cover when folded - Google Patents

Abstract

The invention relates to a chair with a hinged back. Seat (1) has fixed seat support (2) and back of the chair (3), back of the chair (3) articulate in its lower part that leans on the rear portion of seat support (2), back of the chair (3) can be around using to expand the position and folding at the seat support (2) between folding position at least one articulated shaft (4) rotate, the component of supporting role ensures back of the chair (3) locks in the expansion position. The backrest (3, 8 or 29) having dimensions (length and width) greater than those of the seat (2) so that when the backrest (3, 8 or 29) is folded onto the seat (2), the inner surface (5) of the backrest (3, 8 or 29) completely re-covers the seat (2); the backrest (3, 8 or 29) extends beyond the seat (2) on all four sides, so that the seat (2) and the inner surface (5) are completely protected in the folded position of the backrest (3, 8 or 29). The invention is particularly suitable for outdoor seats.

Description

a seat that hinges the back of the seat to form a seat cover when folded

The invention relates to a seat which, when folded, hinges the seat back to form a protective cover for the seat and its inner surface.

The invention is particularly suitable for outdoor seating.

The invention is also applicable to benches, but also to folding chairs.

In the prior art, there are several seats in which the back of the chair is hinged. The back is not intended to protect or cover the seat.

Typically, the seat back is lowered onto the seat in order to fold and/or stack the seat for storage and/or transport. The purpose and characteristics of these seats are completely different.

Described prior art can be defined like this:

- EP-A-0331558 (GROSFILLEX): Folding seat with foldable back and armrests. Said seat has, on the one hand, a seat supported by columns connected to the upper crosspiece, on the other hand, a back mounted pivotally relative to the seat, and finally, armrests placed on the Crosspiece, and hinged on the back of the chair. According to the invention, each articulation device that articulates the armrest on the back of the chair has, behind the back of the chair, a bearing supporting a ball joint integral with said laterally arranged armrest, the bearing having a transverse cutout , so that the armrest on one side or the other side of the back pillar passes through.

The hinged back is perforated and therefore does not protect the seat. This is not the purpose of the present invention.

-US-A5018700 (LEDERGGREEN): Seat has foreskin. It has an articulated back. The back is a hinged monocoque. It is characterized in that the back of the chair is supported on the vertical turn of the seat, and the back of the chair is turned forward to form a large opening at the rear, so the seat cannot be guaranteed to be covered and protected.

- DE-C3734232: This patent describes a seat with backrest folding. The seat back slides in ribbed runners located at the rear of the seat.

The seat back covers the seat over the length, but has spacing at the sides so that it does not provide side protection.

In fact, there is no protection from bad weather and dirt by tilting the seat forward with the back of the chair against the table, it does nothing to protect it, it just facilitates the flow of rainwater. If the seat is going to be put back in the garage, then the seat almost has to be foldable.

Adopting the method of this patent to protect the seat, after finishing a day's work or after heavy rain, especially in the industry of restaurants and cafes, the finishing work of the seat is avoided, and it is generally unnecessary to take special measures to protect the seat.

In view of the fact that the thin shell plays a protective role, the seat of the present invention can adopt materials other than plastics to make wood/mat type, artificial leather/braiding type seat and chair back.

The invention makes it possible to obtain a seat at a price close to that of conventional seats while maintaining a traditional appearance. The invention allows these seats to be used in the restaurant industry or in theaters and important public places.

Using the seat of the present invention, only the hinged seat back needs to be folded on the seat, which is enough to protect the seat and the seat back itself, without any other management work. Likewise, in the stands, after a show or show, the seats can be secured very quickly, and then, shortly before the audience enters, the backs of the chairs are unfolded to allow them to find their seats.

The seat has a fixed seat and a seat back, the lower part of the seat back is hinged to the rear part of the seat back, and the seat back can be hinged about at least one between the use unfolded position and the folded position folded on the seat The shaft turns and the support ensures that the seat back is locked in the unfolded position, characterized in that the dimensions (length and width) of the seat back are greater than those of the seat so that when the seat back is folded over the seat , the inner surface of the seat back fully re-covers the seat; the four sides of the seat back protrude beyond the seat so as to fully ensure coverage and protection of the seat in the folded position of the seat back.

The back is provided with two almost vertical side panels which reinforce the side protection of the seat when the back is folded over the seat.

The chair back is composed of a backrest for improving the comfort of the seat user and a thin shell for covering and protecting the seat when the backrest is folded over the seat.

The back of the chair consists of a back rest mounted on a thin shell hinged around an axis.

The fitted backrest is held on the hinged shell by quick releases.

The shell has the same dimensional characteristics and shape as the back of the chair, ensuring complete coverage and protection of the seat when said back is folded over the seat.

The back of the chair is composed of a backrest hinged around an axis, and a thin shell is inlaid on the outer surface of the backrest.

The inlaid thin shell is fixed to the backrest by quick release parts.

The supporting member is the chair back, which is just supported on the seat at its lower part and rotates around the axis in the unfolded position.

The supporting member of the chair back is: the chair back has two side brackets that support the chair back in the deployed position. Part of the hinge axis.

The supporting elements of the backrest consist of extensions of the rear legs, which are connected to one another via a crosspiece on which the backrest rests precisely in the unfolded position.

The seat is equipped with two armrests, each hinged at its end by a shaft integral to the back of the chair, and with connectors on the horizontal crutches of each front leg, when the back rests with the help of the horizontal crutches. When the other hinged shaft connected as a whole and the hinged armrest mounted on the horizontal crutch are folded, the chair back is connected with the extension of the front leg through the armrest and can be positioned almost vertically on the armrest. Like this, the connecting piece ensures Back support for the chair back.

The connector consists of a zigzag guide slot installed on each armrest, which cooperates with the shaft or positioning pin integrated with the extension of the front leg. The zigzag guide slot can have several armrest positioning positions, corresponding to the same seat back. Multiple angles to adjust the position.

The back has two locating pins, protruding from each side, that mate with the serrated side panels located in front of each rear leg extension to secure the back into position in each detent, lift the back slightly, and hinge The parts can be moved from one draw-in slot to another draw-in slot, backward to the final supporting position, and forward to the folded position folded on the seat.

Each front and/or rear leg of the seat is attached to the seat with a decoupling for easy drainage.

Since the back and seat are designed as receiving cushions, the shell of the back is relatively concave to fit the back cushions, which are held in the shell by means of snap-fits, in addition, the seat has two flanges on each side, Ensures easy protection of cushions fitted in between.

According to another preferred embodiment, the seat is provided with armrests integrated into the monocoque back. The armrests are connected to each other by a crosspiece which is disposed under the seat and rests in raised seating grooves on each front leg.

On the back of the chair, the rectangular in-position groove of the hinge shaft of the back of the chair allows the backrest to move vertically on the one hand, and allows the horizontal movement backward on the other hand, so that the crosspiece is out of the in-position groove, so that the back and the armrest can be turned forward .

The accompanying drawings, given as non-limiting examples, illustrate preferred embodiments of the invention and facilitate the understanding of the invention.

FIG. 1 is a perspective view of a seat with unfolded seatback according to the invention, especially for use in spectators.

Figure 2 is a view of the chair shown in Figure 1 but with the seatback folded over the seat.

Fig. 3 is a longitudinal sectional view of A-A in Fig. 2 .

Fig. 4 is a transverse sectional view of B-B in Fig. 4 .

Figure 5 is a perspective view of a seat with a backrest and a shell.

Figure 6 is a perspective view of the seat shown in Figure 5 but at another angle with the seat back folded over the seat.

Figure 7 is a perspective view of a seat with a backrest and a shell.

Fig. 8 is a longitudinal sectional view of F-F in Fig. 6 .

Fig. 9 is a transverse sectional view of the seat E-E in Fig. 6 .

Figure 10 is a perspective view of another embodiment of the seat.

Figure 11 is a view of the seat shown in Figure 10 but from another angle with the seat back folded over the seat.

Fig. 12 is a perspective view of the chair of the present invention having a seat and a backrest.

Fig. 13 is a cross-sectional view of C-C in Fig. 11 .

Fig. 14 is a longitudinal sectional view of D-D in Fig. 11 .

Figure 15 is a perspective view of another embodiment of the seat.

Figure 16 is a perspective view of a chair back with hinged back and shell of the present invention.

Fig. 17 is a perspective view of the seat shown in Fig. 15 but at another angle, with the seat back folded and the hinged armrests in a vertical state.

Figure 18 is a perspective view of the horizontal portion of the armrest and seat support arm.

Fig. 19 is a perspective view of another embodiment of the seat of the present invention.

Figure 20 is a perspective view of the seat shown in Figure 19 but with the seatback folded.

Figure 21 is a detail view of the seatback hinge shaft and seatback locking and reclining components.

Figure 22 is a perspective view of another embodiment in which the seat is provided with armrests integrated with the back of the seat, said armrests being connected to each other by a crosspiece under the seat.

Fig. 23 is an example view of the seat shown in Fig. 22, arrows and dotted lines showing the movement of the seat back folded onto the seat.

Figure 24 is a view of the seat back of the chair shown in Figure 22 folded on the seat.

The seat 1 of the present invention has a fixed seat 2 and a seat back 3 which is hinged at the rear of said seat 2 at its lower lower part.

The seat back 3 is rotatable about at least one hinge axis 4 between the use unfolded position and the folded position folded over the seat 2 .

The supporting members ensure that the seat back 3 is locked in the deployed position.

The present invention is characterized in that the chair back 3 shown in Figures 1, 2, 10, 11 and 12, or the chair back 8 shown in Figures 5, 6, 7, 15, 16 and 17, or the chair back 8 shown in Figures 19 and 20 The seat back 29, or the seat back 39 shown in Fig. 22, 23, 24, its size is greater than the size of the seat 2, so that when the seat back 3, 8, 29 or 39 is folded on the seat 2, the chair The inner surface 5 of the back 3 , 8 , 29 or 39 completely re-covers the seat 2 .

The four sides of the chair back 3, 8, 29 or 39 are all beyond the seat 2, so that the seat back 3, 8, 29 or 39 is fully guaranteed to cover and protect the seat 2 in the folded position.

The particular example shown in Figures 1, 2, 3, 4, 11, 12, 13, and 14 shows that the chair back 3 of the seat 1 has two almost vertical side panels 6, 7 to improve the firmness of the chair back, When the seat back 3 is folded on the seat 2, it can protect the seat 2 from the side.

The A-A and B-B sectional views shown in Figures 3 and 4 and the F-F and E-E sectional views shown in Figures 8 and 9 show the dimensions that allow the seat back 3, 8, 29 or 39 to cover the seat 2 above technical characteristics.

In the other two embodiments shown in FIGS. 5 , 6 , 7 , 8 and 9 , 15 , 16 , 17 , 19 , 20 , the seat back 8 or 29 has a backrest 9 and a shell 10 .

The backrest 9 or 11 has the function of improving the comfort level of the seat user, and when the seat back 8 or 29 is folded on the seat 2, the thin shell 10 or 12 has the function of covering and protecting the seat.

In the embodiment shown in FIGS. 5 , 6 , 7 , 8 and 9 , the chair back 8 has a backrest 9 fitted on a thin shell 10 . Shell 10 is hingedly mounted about axis 4 .

The fitted backrest 9 is held in the hinged shell 10 by snap-fits.

The quick positioning part is not shown in the figure.

If the thin shell 10 is made of plastic, it can be designed such that the fitted backrest can be directly inserted into the thin shell 10 by force through the reinforcing ribs arranged around the thin shell 10 .

This relates to the embodiment of the quick-release elements that allow the backrest 9 to be integrated with the shell 10 .

According to other embodiments shown in FIGS. 15 , 16 , 17 , the chair back 8 has a backrest 11 articulated about an axis 4 , on the outer surface of which a thin shell 12 fits. Only the backrest 11 is hinged, and the thin shell 12 is simply fitted on the backrest 11 .

The fitted thin shell 12 is fixed on the hinged backrest 11 through quick positioning pieces.

The quick positioning part is not shown in the figure, but relates to a known type of quick positioning part.

The supporting member is the chair back 3, the chair back 3 is just supported on the seat 2 at its lower part, when the chair back 3 is in the unfolded position, it rotates around the axis 4, see the implementation shown in Figures 1 to 4 example.

According to a particular embodiment shown in particular in FIG. 5 , the backrest 8 has two side panels 13 , 14 supporting said backrest 8 in the deployed position of use.

Said side plates 13, 14 are arranged on one or two hinge shafts 4 at the bottom of both sides of the chair back 8, close to the extensions of the rear legs of the seat.

According to other embodiments shown in FIGS. 10 , 11 , 12 , the supporting member of the backrest 3 consists in the extension of the rear legs 15 connected to each other by crosspieces 16 .

In the unfolded position, the seat back 8 just bears on said crosspiece 16, as shown in FIGS. 10 , 11 , 12 .

According to other embodiments shown in FIGS. 15 , 16 , 17 and 18 , the seat is provided with two armrests 17 , 18 , each of which is closed at its end by an aperture 35 that receives a shaft 19 integral with the back 8 . The hinge, moreover, has a link 22 so that the armrests 17 , 18 are connected to a horizontal crutch 20 of each front leg 21 .

Said link 22 consists of a zigzag guide 23 mounted on each armrest 17 , 18 , cooperating with a shaft 24 integral with the extension 20 of the front leg 21 .

Sliding and rotating around the shaft 24 that makes the armrests 17, 18 slightly inclined relative to the verticality, the interlocking motion is transmitted to each armrest 17, 18 that rotates on the shaft 19, and the zigzag guide groove 23 can make the chair Back 8 folded up. Once the seat back 8 is folded, it is protected from dirt.

When the chair back 8 is unfolded, the movement process of the armrests 17 and 18 is opposite until the shaft 24 is just stuck in the draw-in groove of the guide groove 23 to ensure the rear support of the chair back 8, and the chair back 8 is connected by the armrests 17 and 18 at this time. On the extension part of the front leg 21, however, the armrests 17, 18 can be stuck in several draw-in slots corresponding to the same number of angle adjustment positions of the chair back 8.

According to other embodiments of the invention shown in FIGS. 19 , 20 and 21 , the seat back 29 has two locating pins 25 , 26 protruding from each side, with a zigzag side plate located in front of each rear leg 28 extension. 27 to ensure that the seat back 29 is positioned in each draw-in groove, because the hinged 4 way is adopted, therefore, the chair back 29 can be moved from one draw-in groove to another draw-in groove by slightly lifting the seat back, and can move backward to the final support position, it can be moved forward to the folded position where it is folded on the seat 2.

According to various embodiments, each front leg 21 and/or rear leg 15, 28 of the seat is connected to the seat 2 with a decoupling 30 to facilitate drainage.

Said decoupling 30 is particularly shown in FIGS. 13 , 9 .

The chair backs 3, 8 and the seat seat 2 are designed to receive cushions, and the thin shells of the chair backs 3, 8 are relatively concave, which is convenient for inserting a back cushion 31, and the back cushion 31 is kept on the thin shell of the chair back by a VELCRO type (registered trademark) quick positioning member 32. In the shell, moreover, the seat 2 has two flanges 33 on each side ensuring easy protection of the cushion 34 .

The arrangement of the various specifications can be seen in FIG. 13 .

According to other preferred embodiments, the seat 36 is provided with armrests 37, 38 integral with a monocoque 39. The armrests 37, 38 are connected to each other by a crosspiece 40 disposed below the seat 41 and supported in raised seat slots 42 on each front leg.

On the seat back 39, the rectangular in-position slot 43 of the seat back hinge shaft 44 allows the seat back 39 to move vertically on the one hand, and allows the rear horizontal movement on the other hand, so that the crosspiece 40 breaks away from the in-position slot 42, so that the seat back 39 and armrests 37, 38 can be turned forward.

Claims (17)

1. A seat (1 or 36) having a fixed seat (2) and a seat back (3, 8, 29 or 39) hinged at its lower lower part to the seat (2) At the rear of the seat (2), the seat back (3) can rotate around at least one hinge axis (4, 44) between the use unfolded position and the folded position folded on the seat (2), and the supporting members ensure that the seat back (3, 8, 29 or 39) locked in the deployed position, characterized in that said seat back (3, 8, 29 or 39) has dimensions (length and width) greater than that of the seat (2) so that when When the chair back (3, 8, 29 or 39) is folded over the seat (2), the inner surface (5) of the chair back (3, 8, 29 or 39) completely re-covers the seat ( 2); the four sides of the chair back (3, 8, 29 or 39) all exceed the seat (2), so that the folded position of the chair back (3, 8, 29 or 39) is completely guaranteed to cover and protect the seat (2) and inner surface (5). 2. The seat according to claim 1, characterized in that the seat back (3) has two almost vertical side panels (6, 7) to improve the firmness of the seat back, when the seat back (3) When it is folded on the seat (2), it can protect the side of the seat (2). 3. Seat according to claim 1, characterized in that the seat back (8, 29) has a backrest (9, 11) and a shell (10, 12), the backrest (9, 11) has a As a function of the comfort level of the chair user, when the back (8, 29) is folded over the seat (2), the shells (10, 12) have the ability to cover and protect the seat (2) and back (9) , 11) the role. 4. Seat according to claim 3, characterized in that the seat back (8, 29) has a backrest (9) fitted on the shell (10). The shell (10) is hingedly mounted around the shaft (4). 5 . Seat according to claim 4 , characterized in that the fitted backrest ( 9 ) is held in the hinged shell ( 10 ) by quick-release elements. 6. Seat according to one of claims 1 or 3, characterized in that the shell (10 or 12) has the same When raised it ensures complete coverage of the features and shape of the protective seat (2). 7. The chair according to claim 3, characterized in that the chair back (8, 29) has a backrest (11), the backrest (11) is hinged around the shaft (4), and the thin shell (12) is fitted on the On the outer surface of the backrest (11). 8. The seat according to claim 7, characterized in that the fitted thin shell (12) is fixed on the backrest (11) by a quick positioning member. 9. The seat (1) according to one of claims 1, 2 or 4, characterized in that the supporting member is the backrest (3), which just supports at its lower part On the seat (2), when in the unfolded position, it rotates about the axis (4). 10. The seat according to any one of claims 1, 2 or 3, characterized in that the supporting member of the seat back (8) is: the seat back (8) has two Side brackets (13, 14) that support the chair back (8), the brackets (13, 14) are arranged at the lower parts of both sides of the chair back (8) close to the extension of the rear legs (15) of the seat on one or two hinged axes (4). 11. Seat according to claim 1, 2 or 3, characterized in that the supporting member of the seat back (3) consists in the extension of the rear legs (15) connected to each other by crosspieces (16) , in the unfolded position, the seat back (8) just bears on the crosspiece (16). 12. Seat according to one of claims 1, 2, 3, 4, 5, 6, 7 or 8, characterized in that it is provided with two armrests (17, 18), each armrest (17 , 18) are hinged around the shaft (19) that is integrated with the chair back (8) at its end, and are equipped with a connector (22) in addition, and the connector (22) is made up of a shaft (24), which ( 24) On the horizontal turn (20) of each front leg (21), the front leg (21) is integrated with the guide groove (23) installed on each handrail (17, 18), and the connection The member (22) connects the chair back (8) to the extension of the front leg (21) through the armrests (17, 18), ensuring the rear support of the chair back (8), when the chair back (8) is on the shaft (19) turn on, slide and turn around the axis (24) by means of its guide groove (23), so that when folded, it can be positioned almost vertically on the said armrests (17, 18), the axis (24 ) is integrated with the horizontal crutch (20), and the hinged handrails (17, 18) are installed on the horizontal crutch (20). 13. Seat according to claim 12, characterized in that the connecting piece (22) consists of a zigzag guide groove (23) installed on each armrest (17, 18), with the front leg (21 ) of the extension part of the shaft (24) that is connected as one, the zigzag guide groove (23) can have some handrails (17, 18) positioning positions, corresponding to the same number of angle adjustment positions of the chair back (8). 14. The seat according to claim 1, characterized in that the seat back (29) has two positioning pins (25, 26), protruding from each side, and located in the extension of each rear leg (28) The front zigzag side panels (27) cooperate to ensure that the seat back (29) is positioned in each card slot, and the hinge (4) can be moved from one card slot to another by slightly lifting the seat back (29) The groove can be moved backwards to the final support position and forwards to the folded position where it is folded on the seat (2). 15. The seat according to any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, wherein each The front legs (21) and/or the rear legs (15, 28) are connected to the seat (2) and have a decoupling (30) to facilitate drainage. 16. The seat of any one of claims 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, wherein the seat back ( 3) and the seat (2) are designed to receive cushions, and the thin shell of the chair back (3) is relatively concave, which is convenient for inserting a back cushion (31), and the back cushion (31) is held in the thin shell by a quick positioning member (32) , In addition, the seat (2) has two flanges (33) on each side, ensuring easy protection of the seat cushion (34) installed between them. 17. The seat according to claim 1, characterized in that the seat is equipped with armrests (37, 38) integrated with the monocoque back (39); the armrests (37, 38) are connected by A crosspiece (40) is connected, and this crosspiece (40) is configured under the seat (41), and is supported in the raised slot (42) on each front leg; Groove (43) allows chair back (39) to move vertically on the one hand, and allows backward horizontal movement on the other hand, so that crosspiece (40) breaks away from groove (42) in place, makes chair back (39) and armrest (37, 38) can be flipped forward.

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