ES1240775U - Folding chair (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Folding chair, comprising: - a seat (1) and a backrest (2) available according to at least one angular position in which an angular distance from each other is minimal and another angular position in which the angular distance from each other is maximum; - first turning means configured to define a first axis of rotation and arranged for a first relative angular displacement between the seat (1) and the backrest (2); characterized in that it additionally comprises: - a second turning means configured to define a second axis of rotation and arranged for a second relative angular displacement between the seat (1) and the backrest (2); where the first turning means and the second turning means are arranged independently of each other for angular displacements independent of the seat (1) and the backrest (2) from each other. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

FOLDING CHAIR

Technical sector

The present invention is related to the industry dedicated to articulated chairs to be arranged according to both a folded position and an unfolded position.

State of the art

At present, chairs are widely known, with a seat and a backrest, arranged in places such as massive meeting rooms where the space occupied by each of the chairs is relevant. For this reason, in places such as cinemas, theaters, conference rooms and places of similar mass concurrence the arranged chairs are foldable.

The folding configuration of the chairs allows users to have an unfolded position of them to make use of them, while said folding configuration allows to have a folded position whereby the occupied space is reduced so that the passage between rows formed by alignments of the chairs, in addition to cleaning a space around each of said chairs.

A first conventionally employed solution consists of a fixed arrangement of the backrest and a folding or articulable arrangement of the seat to support the weight of the corresponding user, or at least most of it. In this way, when the chair is not in use, it is possible to minimize the floor space required with respect to that occupied when used.

This solution, however, has certain limitations such as those derived from the fixed arranged backrest, since in the necessarily folded position the arrangement of said backrest is according to a slightly inclined plane with respect to a vertical plane for comfort in use, deriving in this way in a larger floor space occupied by the corresponding chair.

A second conventionally employed solution consists of a fixed arrangement of the seat and a folding or articulable arrangement of the backrest. In this way, when the chair is not in use, the vertical space occupied by the corresponding chair with respect to that required in use is minimized.

This solution, however, has certain limitations in addition to the one already mentioned, since the fixed arrangement of the seat implies a greater occupation of the floor space at all times, both in the folded position and in the unfolded position. This results in a difficulty for the passage between rows of the same, in addition to a difficulty when performing cleaning work around and under the chairs.

A third solution conventionally employed consists of the folding arrangement of both the backrest and the seat. This solution is advantageous with respect to the previous ones due to the possibility of being able to move both the backrest and the seat in order to offer a greater degree of comfort in the use thereof, as well as greater accessibility to the space around said chairs.

However, the said third solution has an important drawback, which derives from a conditioning between the movements of the seat and the backrest, both from the folded position to the deployed position and vice versa. That is, the movement of the seat to the unfolded position implies the displacement of the backrest, specifically according to an opposite direction of rotation, and the displacement of the seat to the folded position again entails the displacement of the backrest.

This third solution therefore entails certain limitations both in its resting position and in its use position, that is to say it does not offer flexibility to combine these positions, which in turn results in significant limitations at the time of manufacture since the seat and the backrest They can share a single axis of rotation in which mechanisms or means are included to reverse the direction of rotation of one of them with respect to the other, these inverted turns being also given synchronously or simultaneously.

In view of the described disadvantages or limitations that present solutions presently present, a solution is necessary that allows the displacements of the seat and the back of the chairs in such a way that their resting position, their position in position is optimized and made more flexible. rest, as well as the passage between these positions.

Object of the invention

In order to meet this objective and solve the aforementioned technical problems, in addition to providing additional advantages that can be derived later, the present invention proposes a folding chair, which comprises a seat and a backrest available according to at least one position angular in which an angular distance from each other is minimal and another angular position in which the angular distance from each other is maximum; and first turning means configured to define a first axis of rotation and arranged for a first relative angular displacement between the seat and the backrest.

The chair object of the invention additionally comprises a second turning means configured to define a second axis of rotation and arranged for a second relative angular displacement between the seat and the backrest.

Accordingly, the first turning means and the second turning means are arranged independently of each other for angular displacements independent of the seat and the backrest from each other. In this way, the conditioning between the seat and the backrest ends when one of them is displaced.

The folding chair additionally comprises at least one support with a first fixing point and a second fixing point for joining the first turning means and the second turning means independently of each other to the support. This aspect reinforces the flexibility of the chair object of the invention in what it obtains and assembles, in addition to the independence, or not conditioning between angular displacements or folding of the backrest and the seat. Likewise, this denotes an optimization in the chair by providing flexibility in the manufacture and assembly of the same as they are obtainable and mountable parts in an unconditional manner.

Accordingly, the support preferably has a fixing end, the first fixing point being at a smaller distance with respect to the fixing end than the second fixing point. In this way, a configuration is provided in the fixing points in such a way that it contributes to a reduction of a required floor space, while at the time of supporting stresses or weights.

Additionally, and preferably, the first fixing point, the second fixing point and the fixing end are arranged in the support such that a first straight line would imagine joining between the first fixing point and the fixing end and a second straight line would imagine the union between the first fixing point and the second fixing point forming an imaginary angle between 95 ° and 170 °. This arrangement of the first fixing point, the second fixing point and the fixing end implies an optimization in the space required in the support to contribute even more to the reduction of the required floor space without compromising the resistance to the be supported

The imaginary angle is more preferably between 115 ° and 155 ° and even more preferably between 125 ° and 145 °. In this way, provisions are provided, each one directed to a greater degree of optimization than the previous one in regard to the aforementioned reduction of the required floor space and the resistance to the efforts to be supported by the chair.

Preferably, the first straight line would imagine and the second straight line would imagine are contained in the support. Thus, the support is configured structurally reinforced against the efforts to be supported.

The first straight line would imagine joining between the first fixing point and the fixing end is preferably arranged according to a vertical, or substantially vertical, arrangement, the chair being arranged in a use location. In this way, the first fixing point being the union of the first turning means, at the same time as these turning means which define the axis of rotation of the seat, element of the chair subjected to greater stresses or weights in the Using the chair, the structural strength of the support (s) is optimized, and therefore of the chair, in addition to a reduction in the volumetric space occupied by the chair in the folded position without affecting the design of the seat or the backrest.

Description of the figures

Figure 1 shows a side view of a chair object of the invention, the chair being arranged according to a folded position, according to a preferred embodiment.

Figure 2 shows angular displacements realizable by a backrest and a seat comprised in the chair object of the invention, the chair being according to the folded position, according to another preferred embodiment.

Figure 3 shows a side view of the chair of Figure 1, the angular displacements shown by the backrest and the seat included in the chair being represented.

Figure 4 shows a side view of the chair object of the invention, according to any of the preferred embodiments, the chair being arranged according to an unfolded position.

Figure 5 shows a perspective view of the chair object of the invention, including supports included in the chair.

Figure 6 shows an exploded view of the seat comprised in the chair object of the invention.

Detailed description of the invention

The present invention relates to a folding chair, which comprises a seat (1) and a backrest (2). Additionally, the folding chair comprises first turning means and second turning means, which are configured to define a first axis of rotation and a second axis of rotation, respectively. Also, the first turning means and the second turning means are arranged independently of each other for angular displacements independent of the seat (1) and the backrest (2).

In this way, the backrest (2) is free to remain motionless in the face of angular movements of the seat (1), just as the seat (1) is free to remain motionless in the face of angular movements of the seatback (2).

According to a first option, the first turning means are arranged for angular turns of the seat (1) and the second turning means for angular turns of the backrest (2). According to a second option, the first turning means are arranged for angular turns of the backrest (2) and the second turning means for angular turns of the seat (1). In both said options, each of said turning means is arranged in the folding chair to provide relative angular displacements of the seat (1) with respect to the backrest (2) independently of each other, and vice versa.

The seat (1) and the backrest (2) are available according to a first angular position in which an angular distance from each other is minimal and to a second angular position in which the angular distance from each other is maximum. The first angular position of the folding chair is appreciable for example in Figures 1 and 2, while the second angular position is appreciable in Figure 4. Both the first angular position and the second angular position are adjustable according to turning limits. angle of the seat (1) and the backrest (2), preferably two for each of them (1,2).

The first angular position corresponds to a resting arrangement of the folding chair, that is to say without angular displacement of the seat (1) or of the backrest (2) so that a separation angle between them is minimal. This resting arrangement with zero angular displacement of the seat (1) and the backrest (2) corresponds to a folded position of the folding chair. In this folded position the seat (1) and the backrest (2) are contained according to parallel planes, or substantially parallel, to each other. The second angular position corresponds to an arrangement for use of the folding chair, according to which the folding chair is in accordance with an unfolded position. This use arrangement is given by both the seat (1) and the backrest (2) displaced angularly with respect to the folded position according to a maximum angle of rotation, and therefore according to a maximum angle of separation from each other.

According to a first preferred embodiment, the folded position of the chair object of the invention is according to a vertical, or substantially vertical, arrangement of both the seat (1) and the backrest (2), as can be seen in Figure 1 .

According to this first preferred embodiment, the seat (1) and the backrest (2) are additionally available according to a first intermediate angular position in which the angular distance, or the angle of separation, from each other is greater than in the first angular position and smaller than in the second angular position. This first intermediate angular position is determined by the angular displacement of the backrest (2) with respect to the folded position, while the seat (1) is maintained according to the folded position. That is, the first intermediate angular position corresponds to a first partially deployed position of the folding chair when only the backrest (2) is angularly rotated with respect to the resting arrangement of the folding chair.

Also, and according to the first preferred embodiment, the seat (1) and the backrest (2) are available according to a second intermediate angular position in which the angular distance, or the angle of separation, from each other is greater than in the first intermediate angular position and smaller than in the second angular position. This second intermediate angular position is determined by the angular displacement of the seat (1) with respect to the folded position, while the backrest (2) is maintained according to the folded position. That is, the second intermediate angular position corresponds to a second partially deployed position of the folding chair when only the seat (1) is angularly rotated with respect to the rest arrangement of the folding chair.

Both the first intermediate angular position and the second intermediate angular position are also set according to the angular rotation limits of the seat (1) and the backrest (2). This is because being the seat (1) independently rotatable angularly with respect to the backrest (2), and vice versa, the angular rotation limits of both (1, 2) allow establishing different combinations, and therefore a greater degree of flexibility in the position of the folding chair.

In figure 3 two bidirectional arrows are shown referring to the angular displacements that can be performed independently by the seat (1) and by the backrest (2) according to the first preferred embodiment of the folding chair, the chair being according to the arrangement of rest.

In said figure 3, in the case of the backrest (2), it (2) is represented in a continuous line according to one of the angular positions according to one of its angular rotation limits and in a broken line according to another of the angular positions according to another of its angular rotation limits. Also, in Figure 3, in this case for the seat (1), this (1) is represented in a continuous line according to one of the angular positions according to one of its angular rotation limits and in a broken line according to to another of the angular positions according to another of its angular rotation limits in addition to two intermediate angular positions to these not defined by its angular rotation limits.

According to a second preferred embodiment, the folded position of the chair object of the invention is according to a horizontal, or substantially horizontal, arrangement of both the seat (1) and the backrest (2), as can be seen in Figure 2 .

According to this second preferred embodiment, the seat (1) and the backrest (2) are additionally available according to the first intermediate angular position in which the angular distance between them is greater than in the first angular position and less than in The second angular position. In this case, the first intermediate angular position is determined by the angular displacement of both the backrest (2) and the seat (1) with respect to the folded position, or the rest arrangement.

As with the first preferred embodiment, in the second preferred embodiment the first intermediate angular position corresponds to a vertical, or substantially vertical, arrangement of the seat (1) and an angularly offset arrangement of the backrest (2) with respect to the seat ( one). The first intermediate angular position is also established according to the angular rotation limits of the seat (1) and the backrest (2).

In figure 2 two other two-way arrows are shown referring to the angular displacements that can be performed independently by the seat (1) and by the backrest (2) in accordance with the second preferred embodiment of the folding chair, the folding chair being according to the resting provision.

The folding chair comprises a support (3), preferably one on each side of the folding chair for greater lift and stability, that is to say in correspondence with each side of the seat (1) and the backrest (2). The seat (1) and the backrest (2) are arranged together with the possibility of turning independently of each other to the supports (3) located on its sides. Accordingly, each of the supports (3) has a first fixing point (3.1) and a second fixing point (3.2).

The first fixing points (3.1) are for a connection between the seat (1) and the support (3), according to the first option described above, the connection being through the first turning means. The second fixing points (3.2) for a connection between the backrest (2) and the support (3), according to said first option, the connection being through the second turning means.

Alternatively, the first fixing points (3.1) also being for the connection between the seat (1) and the support (3), according to the second option described above, this connection is through the second turning means. Also, being also the second fixing points (3.2) for a connection between the backrest (2) and the support (3), according to said second option this connection is through the first turning means.

Each of the supports (3) additionally has a fixing end (3.3) through which an arrangement of the folding chair is established according to a selected location. This arrangement can be by placing pieces such as tubular elements (4) in correspondence with said fixing ends (3.3), as is appreciated for example in Figure 1. Alternatively, said arrangement can be directly through the ends of fixation (3.3), for example in a foundation (5), as can be seen in Figure 2.

In order to maintain an independence in the angular displacements of the seat (1) with respect to the backrest (2), and vice versa, the first fixing point (3.1) and the second fixing point (3.2) are in the support ( 3) according to different locations.

Additionally, in order to minimize a total volumetric space definable by the seat (1) and the backrest (2), both by themselves and by the volumetric space locatable with each other, and preferably according to the folded position of the folding chair , the first fixing point (3.1) is at a smaller distance with respect to the fixing end (3.3) than the second fixing point (3.2).

The arrangement of the first fixing point (3.1), the second fixing point (3.2) and the fixing end (3.3) on the supports (3) is such that starting from the first fixing point (3.1) by two straight lines Imaginary is joined, on the one hand, with the second fixing point (3.2) and, on the other hand, with the fixing end (3.3), said two straight lines forming an imaginary angle. This angle is preferably between 95 ° and 170 °, and more preferably between 115 ° and 155 °, and even more preferably between 125 ° and 145 °.

Additionally, the support (3) is configured so that each of said two imaginary straight connecting lines, one of the first fixing point (3.1) with the second fixing point (3.2) and another of the first fixing point (3.1 ) with the fixing end (3.3), are contained by the support itself (3).

In turn, preferably, the folding chair arranged according to the corresponding location through the fixing ends (3.3), said fixing ends (3.3) being the parts located vertically at a lower point, the fixing end (3.3) is aligned vertically, or substantially vertically, with the first fixation point (3.1). In this way, the weight to be supported through the first turning means, and therefore also by the corresponding first fixing points (3.1), is fully supported on the support (3) between the fixing end (3.3 ) and the first fixing point (3.1), that is to say with all the intermediate points between the fixing end (3.3) and the first fixing point (3.1) being free of a cantilever arrangement.

Likewise, taking on this occasion the fixing end (3.3) as a reference so that it (3.3) is connected with the first fixing point (3.1) by means of a first imaginary rectilinear joint and, independently, with the second point of fixation (3.2) by means of a second imaginary rectilinear junction, said second imaginary rectilinear junction is angularly offset with respect to the first imaginary rectilinear junction. This angular displacement is in a direction opposite to the location of the seat (1), that is to the opposite side of correspondence with the seat (1) or towards a rear part of the backrest (2) and therefore of the folding chair.

In this way, the described total volumetric space definable by the seat (1) and the backrest (2) is optimized while providing flexibility in the design and assembly of the chair, and more specifically the seat (1).

If the first fixing point (3.1), the second fixing point (3.2) and the fixing end (3.3) are aligned, the design of the seat (1) would be compromised, for example, to be able to arrange the chair folding according to the position folded with the backrest (2) and the seat (1) according to the vertical, or substantially vertical, arrangement of Figure 1, or this position of the folding chair would simply be impossible.

On the other hand, in case the first fixing point (3.1) and the second fixing point (3.2) are aligned, while the first fixing point (3.1) and the fixing end (3.3), both alignments forming a right angle, or substantially right; that is to say the first fixing point (3.1) and the second fixing point (3.2) aligned horizontally, or practically, and the first fixing point (3.1) and the fixing end (3.3) vertically, or practically, would mean increasing the described volumetric space total definable by the seat (1) and the backrest (2), both due to a measurement taken through the seat (1) and the backrest (2) and to the increase in the measure of the backrest (2) for a given maximum height of the same.

Preferably the first turning means or the second turning means, and more preferably both the first turning means and the second turning means, comprise in correspondence with each of the sides of the folding chair, a set of components which are described below. In addition, in said description of these components reference is made only to the seat (1), supported by Figure 6, although said same components can be used in the manner described additionally or alternatively in the backrest (2).

Among the components included in the first turning means and / or the second turning means are a male plate (6), a rod (7) and a female plate (8). Mainly, these components, together with their provisions, physically determine the first and / or the second axis of rotation.

In a central part of an inner face of the male plate (6) the rod (7) is provided in projection. On an outer face of the male plate (6), opposite to the location of the rod (7), said male plate (6) has projections (6.1) to be arranged interlocked or embedded in the support (3). By means of the arrangement by interlocking or fitting the projections (6.1) in the support (3) a relative rotation between the male plate (6) and the support (3) is prevented, and therefore between the rod (7) and the support (3), even in the face of angular displacements between the folded position and the deployed position of the folding chair.

Additionally, the male plate (6) includes a fixing hole (6.2). This fixing hole (6.2) extends from the outer face and through an inner part of the rod (7). Accordingly, the folding chair comprises a fixing element (9), preferably a screw or bolt without thread, for each of the male plates (6). Thus, the male plate (6) is fixed to the support (3) by means of the fixing element (9) by screwing or snapping into the fixing hole (6.2), after insertion of the fixing element (9) through the support (3). The insertion of the fixing element (9) through the support (3) is done in correspondence with the first fixing point (3.1), as it is the seat (2) as previously indicated.

Accordingly, the folding chair preferably comprises an available trim (10) embedded in the support (3) so that it covers externally the first fixing point (3.1) and the second fixing point (3.2) making it impossible to access the themselves, and in this way to the fasteners (9).

The folding chair comprises one or more connecting elements (11) for each of the female plates (8), preferably screws or bolts without thread. The connecting elements (11) are arranged screwed or fitted in the seat (1) before or after insertion through the female plate (8) for its fixed connection. By means of this fixed connection, a relative rotation between the female plate (8) and the seat (1) is prevented.

The female plate (8) includes a passage hole (8.1) through which the rod (7) is arranged inserted. The rod (7), being inserted through the through hole (8.1), has a relative turning capacity with respect to the female plate (8), and therefore with respect to the seat (1) when said female plate is arranged ( 8) fixedly attached to the seat (1).

In order to establish the angular rotation limits, in this case of the seat (1), although additionally or alternatively for the backrest (2), both the male plate (6) and the female plate (8) include stop elements ( 12). The angular rotation limits are established by contacts of the stop elements (12) of the male plate (6) with the stop elements (12) of the female plate (8) by the relative rotation between both plates (6, 8). Preferably, the stop elements (12) are projection tabs from the inner face of the male plate (6) and from an external face of the female plate (8), the tongues being angularly distributed.

In order to exert a tendency or force the seat (1) for its arrangement according to the rest arrangement or the folded position, the first turning means and / or the second turning means comprise at least one recovery element (13 ) in correspondence with each of the sides, in this case described, of the seat (1). The recovery elements (13) are arranged attached to both the male plate (6) and the female plate (8). Preferably, the recovery elements (13) are a torsion spring.

The first turning means and / or the second turning means preferably comprise a plate (14) with a through opening (14 '), in addition to coupling elements (15) for fixing the plate (14), in this case described , in the seat (1).

The plate (14) is arranged fixed by means of the coupling elements (15), preferably screws, so that the rod (7) is arranged inserted through the through opening (14 '), in addition to through the through hole (8.1) of the female plate (8), the recovery element (13) and a side wall of the seat (1).

In order to exercise a regulation or a reduction of the angular velocity in the angular displacements exerted by the recovery elements (13) or by a user of the folding chair, preferably in the angular displacements of the seat (1) for its arrangement to the folded position, the first turning means and / or the second turning means comprise a damping element (16). Said damping element (16) is fixedly fixed on the plate (14) and configured to receive the rod (7) so that it regulates or reduces a relative angular velocity between the rod (7) and the plate (14), and of this form between the support (3) and the seat (1).

According to the above, in the appointment and description of the components included in the first turning means and / or the second turning means the seat (1) can be replaced by the backrest (2), or they can be located and be arranged both in the seat (1) and in the backrest (2).

Claims (5)

1. - Folding chair, comprising: - a seat (1) and a backrest (2) available according to at least one angular position in which an angular distance from each other is minimal and another angular position in which the angular distance from each other is maximum; - first turning means configured to define a first axis of rotation and arranged for a first relative angular displacement between the seat (1) and the backrest (2); characterized in that it additionally comprises: - a second turning means configured to define a second axis of rotation and arranged for a second relative angular displacement between the seat (1) and the backrest (2); where the first turning means and the second turning means are arranged independently of each other for angular displacements independent of the seat (1) and the backrest (2) from each other. 2. - Folding chair according to claim 1, characterized in that it additionally comprises at least one support (3) with a first fixing point (3.1) and a second fixing point (3.2) for joining the first turning means and of the second means of rotation independently of each other to the support (3). 3. - Folding chair according to claim 2, characterized in that the support (3) has a fixing end (3.3), the first fixing point (3.1) being a smaller distance with respect to the fixing end (3.3) than the second fixing point (3.2). 4. - Folding chair according to claim 2 or 3, characterized in that the first fixing point (3.1), the second fixing point (3.2) and the fixing end (3.3) are arranged in the support (3) so that a first straight line would imagine joining between the first fixing point (3.1) and the fixing end (3.3) and a second straight line would imagine joining between the first fixing point (3.1) and the second fixing point (3.2 ) form an imaginary angle between 95 ° and 170 °. 5. - Folding chair according to claim 4, characterized in that the first straight line would imagine and the second straight line would imagine are contained in the support (3).