Item of seating furniture, and furniture fitting therefor
The seating furniture design addresses aesthetic issues by using a displacement system with a receiving space and movable screen to transition the headrest, ensuring minimal size impact and user convenience.
Patent Information
- Application Number
- PCT/EP2024/050502
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2025-07-17
AI Technical Summary
Existing seating furniture with movable headrests often suffer from aesthetic issues when the headrest is stowed, requiring excessive depth behind the backrest, leading to unflattering proportions and increased size.
A seating furniture design with a headrest that can be moved between storage and use positions using a displacement system, incorporating a receiving space surrounded by walls and a movable screen, and utilizing an electric motor or manual mechanism to ensure minimal impact on aesthetics while maintaining a cost-effective design.
The headrest can be seamlessly transitioned between positions without significantly altering the furniture's appearance, maintaining a compact form factor and enhancing user convenience.
Smart Images

Figure EP2024050502_17072025_PF_FP_ABST
Abstract
Description
[0001] Seating furniture and furniture fittings for it
[0002] FIELD OF APPLICATION AND STATE OF THE ART
[0003] The invention relates to a piece of seating furniture, in particular in the form of an armchair or sofa.
[0004] A generic piece of seating furniture has a seat and a backrest arranged behind it. Typically, the seat and backrest, as well as any armrests, are upholstered in a piece of seating furniture designed as an armchair or sofa. Specifically, the invention relates to a piece of seating furniture with a headrest that is arranged above the backrest in a use position and lowered relative to it in a storage position. The invention further relates to a furniture fitting for such a piece of seating furniture, by means of which the headrest is displaceably attached to the piece of seating furniture.
[0005] Headrests on sofas or armchairs are problematic from an aesthetic point of view. The usually flat appearance of an armchair or sofa is disrupted by a headrest, so prior art has already proposed making the headrest movable and capable of being folded into a storage position when not in use, in order to achieve a more attractive appearance of the seating furniture, at least when the headrest is not in use.
[0006] However, existing seating furniture with headrests that can be moved from the in-use position to a stowed position generally suffers from additional aesthetic disadvantages. For example, sufficiently large headrests that are lowered in the stowed position often require the seating to have a great depth behind the backrest. This results in the seating furniture as a whole becoming undesirably large and having unflattering proportions.
[0007] TASK AND SOLUTION
[0008] The object of the invention is to provide a piece of seating furniture with a headrest that can be moved between a storage position and a use position. The headrest should be as unobtrusive as possible in the storage position, and the ability to move the headrest into the storage position should have as little negative impact as possible on the aesthetics of the overall piece of furniture. A further object of the invention is to enable the headrest to be moved with a cost-effective design, in particular through a cost-effective fitting. Page 2
[0009] To solve this problem, a piece of seating furniture and a fitting therefor are proposed. The following describes the aspects of the invention primarily with reference to the piece of seating furniture, although they are largely technically realized through a corresponding design of the furniture fitting. The description of the design of the seating furniture and the essential and optional aspects of the invention with reference to the piece of seating furniture also applies accordingly to the separate furniture fitting.
[0010] The piece of seating furniture according to the invention typically comprises a seat and a backrest. It is preferably an armchair or a sofa, so that the surfaces, at least partially, and in particular the surfaces of the seat and backrest, are provided with a textile covering and upholstered.
[0011] The piece of seating furniture according to the invention has a headrest which can be moved between a storage position and a use position by means of a displacement system.
[0012] To accommodate the headrest in its stowed position, the piece of seating furniture has a receiving space behind the backrest that is surrounded by walls. The receiving space surrounds the headrest in its stowed position at least to the sides and to the rear. A wall that closes off the storage space at the bottom can be provided, but is generally not necessary since a viewer does not have a corresponding perspective from below anyway. The receiving space is open at the top so that the headrest or its headrest body can extend out here. An open receiving space also refers to a design with a screen that temporarily closes off the receiving space but releases the opening of the receiving space at the top when the headrest is moved into the use position.The upwardly facing opening of the receiving space is preferably provided in a horizontally aligned upper end wall of the seating furniture behind the backrest.
[0013] In the context of the invention, the term "headrest" primarily refers to the headrest body, i.e., the usually roughly cuboid-shaped, padded body whose front side provides a support surface for the user's head. A headrest body of a piece of seating furniture according to the invention typically has a width, i.e., an extension in the transverse direction of the furniture, of at least 30 cm and a height, i.e., an extension in the vertical direction of the furniture, of at least 20 cm. The thickness in the longitudinal direction of the furniture is preferably less than 15 cm, particularly preferably less than 10 cm. Page 3
[0014] The headrest within the meaning of the invention also includes those components which are always displaced jointly and in a fixed position relative to the headrest body by means of the displacement system, in particular a headrest support which always remains in the receiving space, as well as a headrest rod connecting the headrest support and the headrest body.
[0015] In the designs described below, in which the headrest body is directly supported by pivotally attached headrest brackets, the pivoting movement of which is controlled by means of the displacement system, the headrest in the sense of the invention is formed only by the headrest body and fittings fixed thereto.
[0016] In the use position, the headrest body is extended from the receiving space and is in a position relative to the backrest in which it can assume its intended function and provide a head support surface in a suitable location.
[0017] In order to move the headrest from the stowed position into the use position, the aforementioned displacement system is provided according to the invention, which mechanically defines, in particular by means of the links, guides, levers and tabs described below, a movement sequence for transferring the headrest from the stowed position into the use position.
[0018] The mechanically predetermined movement sequence provides for the headrest body to be initially displaced vertically, thereby moving it out of the receiving space, and then, in a final phase of the movement sequence, displaced forward primarily in the longitudinal direction of the furniture. In the initial phase of the movement, the headrest body is therefore primarily raised, in particular by at least 40 cm, while during this phase, no significant forward displacement of the headrest body occurs in the longitudinal direction of the furniture, i.e., toward the seat surface. However, certain limited displacements in the longitudinal direction of the furniture are already expedient in this phase, as will be explained below.In the subsequent phase, after the headrest body has already left the receiving space, a movement occurs primarily in the longitudinal direction of the furniture, moving it over the backrest and thus reaching the desired position of the headrest body. In this final phase, the headrest is displaced more strongly in the longitudinal direction of the furniture than in the vertical direction, at least in some sections. Preferably, the direction of movement forms an angle of less than 30° with the longitudinal direction of the furniture, preferably less than 20°, at least for the front headrest surface of the headrest body. Page 4.
[0019] The displacement system is typically not operated manually, but rather by an electric motor. This, including various implementation variants, is described below. The displacement system is capable of converting a uniform output movement of the electric motor, in particular a rotary movement of an output shaft or the extension of an output rod, into a transfer of the headrest from the stowed position to the use position, thus causing both movement phases: first the primarily vertical and then the primarily horizontal.
[0020] A design in which the headrest body maintains a constant orientation during transfer from the stowed position to the use position is fundamentally conceivable and also encompassed by the invention. Such a design is described in more detail below.
[0021] Nevertheless, it is considered advantageous if the mechanically predetermined movement sequence is defined in such a way that the headrest is pivoted forward in the final phase of the movement sequence and / or pivoted forward in the use position compared to the stowed position. The orientation of the headrest body therefore changes during the transfer and deviates, particularly in the use position, from the stowed position. Such a pivoting movement has a number of advantages. It enables a structurally simple option for shifting the headrest body forward in the final phase of the movement. It also allows the headrest to be pivoted right at the start of the movement so as not to collide with other parts of the seating furniture in the limited space available.
[0022] In particular, a pivoting movement must be coordinated such that the headrest body can pass through an upper opening of the receiving space and / or can be guided past the backrest with as little collision as possible. It is preferred that the backrest does not have to be displaced, e.g., by tilting forward, to allow the headrest body to move into the use position.
[0023] Preferably, the headrest is pivoted forward in the use position by at least 10°, preferably by at least 15°, relative to the stowed position. The stowed position pivoted backward relative to the use position typically allows for a more compact seating space. At the same time, however, it is also preferred for a piece of seating furniture according to the invention if the headrest is fundamentally similarly aligned in the stowed and used positions. Therefore, the headrest is preferably pivoted forward in the use position by a maximum of 40°, preferably a maximum of 30°, relative to the stowed position. Page 5
[0024] It is particularly advantageous if the mechanically predetermined movement sequence provides for the headrest to first pivot backwards from the stowed position and then forwards again. How this can be technically implemented is explained below. The advantage of such a movement sequence is that the headrest can be aligned largely vertically in the stowed position and thus saves space, but can pivot backwards when transferred to the use position, in particular to avoid a collision with the backrest, and after successfully passing the backrest can then pivot forwards again to reach the use position. The headrest preferably first pivots backwards by an angle of at least 10° and then forwards by an angle of at least 20°.
[0025] In particular, it is preferred if the movement of the headrest, and thus in particular its headrest body, is divided into the two phases already described: In a first movement phase, starting from the stowed position of the headrest, the headrest is raised, wherein in this first movement phase the headrest preferably overcomes at least 80% of a vertical distance between the position of the headrest in the stowed position and the position of the headrest in the use position and, in the meantime, is only slightly pivoted or displaced horizontally, in particular not pivoting forward by more than 10%. It is preferred if, in this first phase, a pivoting backward even takes place in order to pass the rear end edge of the backrest without collision.In the second movement phase, the headrest is displaced vertically by a maximum of 20% of the vertical distance between the position of the headrest in the stowed position and the position of the headrest in the use position. Meanwhile, a pivoting movement takes place, during which the headrest pivots forward by at least 15° from its pivoted position towards the end of the first phase.
[0026] Even if pivoting the headrest, i.e., changing its orientation in space, is considered preferable, it is not without alternatives, as already noted above. Another attractive solution is one in which, in accordance with the movement sequence mechanically predetermined by the displacement system, the headrest body is displaced forward in the final phase of the movement without changing the orientation of the headrest body. Such a displacement, which does not change the orientation of the headrest body in space, can be technically achieved, in particular, by performing the displacement in the manner of a parallel displacement using two headrest brackets of equal length. This means that the headrest is attached to a carriage, which can preferably be moved purely vertically or by no more than 20° from this, by means of two brackets that are attached to the headrest and the carriage so that they can pivot about different pivot axes.
[0027] Such a design is particularly attractive because the almost vertical guidance can be achieved using inexpensive standard components, and the parallel displacement of the headrest body can also be achieved cost-effectively using tabs. Furthermore, a purely vertical and pivot-free displacement of the headrest body out of the receiving space allows for a narrow headrest opening and the easy use of an upper end surface of the headrest body as a screen when the headrest is stowed.
[0028] As already described at the beginning, the headrest body is arranged in the receiving space in the stowed position of the headrest and is raised from there when transferred to the use position and is then moved forward into the use position.
[0029] To conceal the opening of the receiving space at its upper end, it can be advantageous if the seating furniture has a movable screen separate from the headrest body, which closes off the receiving space at the top in a closed position and releases it in an open position. When the headrest is not needed, the screen creates a closed and therefore aesthetically pleasing appearance of the seating furniture behind its backrest. When the headrest is needed and moved into the use position for this purpose, the screen is moved into its open position. The screen can advantageously be pressed into an end position by means of spring force, preferably towards the closed position.
[0030] Preferably, the movable screen and the headrest are coordinated with one another in such a way that the movable screen can assume its closed position when the headrest is arranged both in the use position and in the stowed position. The screen can therefore assume its closed position again upon completion of the transfer of the headrest into the use position. In order to be able to transfer the screen back into the closed position despite a headrest rod extending from the extended headrest body into the receiving space, it is advantageous if the movable screen has at least one recess through which a headrest rod of the headrest extends outwards from the receiving space when the headrest is arranged in its use position. In particular, the preferably rectangular screen can have one or more indentations on one long side.Alternatively, an opening in the end wall of the seating furniture surrounding the receiving space behind the backrest can also have one or more recesses at the edge of the opening to accommodate the headrest rods.
[0031] The movable screen is preferably pivotably mounted relative to a supporting structure of the seating furniture. It can preferably be pivotably mounted on a wall of the seating furniture behind the backrest, particularly preferably on a rear wall of the seating furniture.
[0032] In the simplest case, the screen can have an essentially flat extension and can be pivoted open and closed like a simple flap. However, it is advantageous if the screen has a three-dimensional extension and, in addition to a surface section that is arranged horizontally when closed, also has a surface section that is arranged vertically when closed, which section itself represents a movable part of the rear wall of the piece of seating furniture when closed. This allows the screen to be opened very wide, and this makes it easier to extend the headrest body. In a screen with such a three-dimensional extension, a hinge for pivoting the screen is preferably arranged at least 3 cm below an upper edge of the rear wall of the piece of seating furniture.
[0033] It is considered advantageous if the screen pivots outward from its closed position. This allows the screen to be easily opened through the headrest itself as it extends. However, special designs are also possible in which the screen, or part of it, pivots inward. This will be explained further below.
[0034] To open a screen that pivots outward to extend the headrest, a separate mechanism may be provided, such as a separate electric motor activated before the headrest is moved to slide or pivot the screen into the open position. Such a separate mechanism entails additional costs and increased complexity.
[0035] Preferably, therefore, the screen and the headrest are coordinated in such a way that, at least when the headrest is moved from the stowed position to the use position, the screen is pushed toward its open position. In a sense, the headrest thereby opens itself toward the use position. Preferably, the headrest and the screen are coordinated in such a way that in both directions of the headrest, i.e., when moved toward the open position and when moved toward the closed position, the Page 8
[0036] The screen is pushed from its closed position toward its open position. This allows the above-described design to be realized without a complex separate drive for the screen, whereby the screen can be in its closed position both when the headrest is in the use position and when the headrest is in the stowed position.
[0037] It has been shown that opening the screen by means of the headrest itself can be achieved particularly well by a rear side of the headrest body and a headrest rod of the headrest together forming a sliding surface along which the screen slides while the headrest is moved out of the receiving space or is relocated into it. In particular, a design in which the headrest rod is not fastened to an underside of the headrest body as is usual, but rather to a rear side. This makes it possible to ensure that the rear of the headrest as a whole forms an undercut-free contour in which there is no risk of the screen entering a blocking position in which it prevents further movement of the headrest.
[0038] As already mentioned above, it can also be provided that an upper end surface of the headrest body closes the opening of the receiving space when the headrest is in the stowed position, by being arranged essentially in the same plane as an upper end wall of the seating furniture behind the backrest. In the stowed position of the headrest, its upper surface thus itself forms part of this end wall. With such a design, a separate screen can be dispensed with, which allows for a somewhat more compact and, in particular, flatter design of the seating furniture.
[0039] With such a design, in which the headrest itself closes off the receiving space at the top in the stowed position, the problem arises that the receiving space remains open when the headrest is arranged in the use position unless further measures are taken. An improvement is achieved if a screen is provided which at least partially closes the upper opening of the receiving space when the headrest is arranged in the use position. This screen is fixedly or movably attached to the headrest itself and is raised together with the headrest when the headrest is transferred from the stowed position to the use position. In particular, such a screen can be provided on a headrest rod. Such a screen is arranged deep in the receiving space when the headrest is arranged in the stowed position. Only when the headrest is extended does the screen reach the top of the receiving space. Page 9
[0040] The screen extends into the area of the receiving space opening and at least partially closes it. A design with a section rigidly attached to the headrest and another section that is movable relative to it is also possible. Furthermore, such a screen on the headrest can also be implemented in combination with another screen that is positioned separately from the headrest and movable at an edge of the receiving space opening, so that the two screens jointly close the opening when the headrest is in the use position.
[0041] As already briefly described at the beginning, two different concepts must be distinguished with regard to how the headrest body is worn.
[0042] Firstly, the displacement system can comprise a headrest support to which the headrest body of the headrest is fixedly displaced by the displacement system, wherein the headrest support itself is arranged within the receiving space both in the stowed position and in the use position of the headrest and preferably tilts when transferred into the use position. The advantage of such a design lies in particular in the fact that only components that are fixed relative to one another are moved out of the receiving space when the headrest is transferred into the use position. The risk of crushing the hands of a user due to freely accessible fittings that are movable relative to one another is correspondingly low. The headrest support and the headrest body are preferably connected to one another via a headrest rod system that extends from the headrest into the receiving space.The headrest rod can be designed, in particular, as a curved headrest rod, which, when the headrest is in the use position, extends from the receiving space and from the rear over the top of the backrest to the headrest body. The headrest body is provided at the distal end of the headrest rod. Ideally, this is a rigid attachment. However, a limited pivoting of the headrest body is also possible by means of a headrest fitting, which can be adjusted stiffly relative to the headrest rod or manually after releasing a locking mechanism, for example, can be brought into a forward-tilted reading position of the headrest body.
[0043] Alternatively, a design is possible in which the displacement system comprises a carriage that can be moved essentially vertically and preferably in a straight line, which, like the described headrest support, always remains in the receiving space. Unlike the design with a headrest support, however, the headrest body is movable relative to the aforementioned carriage, preferably by means of at least one pivotable headrest bracket that is pivotally connected to the carriage and connects the carriage to the headrest body. The displacement system causes a corresponding movement of the headrest body relative to the carriage, particularly in a final phase of displacement into the use position.
[0044] In particular, it can be provided, as already described above, that two headrest brackets are attached to the vertically movable carriage, each pivotable about different pivot axes, and each of these brackets is furthermore pivotally connected to the headrest body about different pivot axes. These headrest brackets are preferably of equal length from pivot axis to pivot axis and are spaced identically on the carriage and the headrest body, so that the headrest body can be displaced parallel to the carriage.
[0045] In a displacement system with a carriage of the type mentioned, a guide device is preferably provided for guiding the carriage, preferably linearly and primarily vertically. Such a guide device can, for example, be designed in the form of a guide rail, into which a guide rail body on the carriage side engages.
[0046] In order to achieve a pivoting movement of the at least one headrest bracket, and in particular of the two different headrest brackets, toward the end of the transfer into the use position, a force coupling surface is preferably provided on one of the headrest brackets. If a force is applied to this surface, the headrest brackets are pivoted, and the headrest body is consequently displaced forward.
[0047] The application of force to this headrest bracket can be achieved in various ways. One possibility is to provide a pressure surface that is fixed to the supporting structure of the seating furniture. During the vertical movement of the slide and, with it, the headrest brackets, the force coupling surface on one of these headrest brackets comes into contact with the pressure surface, so that continued movement of the slide causes the pivoting movement of the headrest bracket. With such a design, a portion of the vertical movement of the slide is used to effect the relative movement of the headrest body with respect to the slide.
[0048] In contrast, it may be advantageous to apply the force to the force coupling surface using a pivoting lever, which is also used to move the slide. This allows the movement phases of the relative movement of the slide relative to a supporting structure and the relative movement of the headrest body relative to the slide to be completely or partially separated, or even to implement a design in which the slide is displaced only slowly towards the end of the movement, while the headrest body is moved comparatively quickly forward relative to the slide in the longitudinal direction of the furniture. In particular, it can be provided that the pivoting lever and the slide are connected to one another via a guide rail.This makes it possible to select a path for the link which, in a final phase of the pivoting movement of the pivot lever, no longer causes a displacement of the slide, but instead only directly or indirectly applies a force to the force coupling surface of the headrest bracket, so that the headrest bracket pivots relative to the slide.
[0049] In order to effect a final pivoting movement of the headrest when lifting the carriage or, in particular, the headrest support, it can be provided, in particular, that the displacement system has at least one tilting guide surface inclined relative to a vertical direction of the furniture, by means of which a tilting moment is exerted on the headrest towards the end of the movement sequence. A section of the carriage or the headrest support is deflected forwards or backwards by the tilting guide surface during the raising process in order to effect the tilting of the headrest support as a whole or of a component movably attached to the carriage, which in turn causes the pivoting of the headrest body.
[0050] In particular, the displacement system can be provided with at least one non-linear guide slot, wherein the tilt guide surface is part of this guide slot. The tilt guide slot is preferably provided as an opening in a fitting part of the displacement system, in particular in the fitting part that is directly attached to a supporting structure of the seating furniture by means of screws. At least one slot body is provided on the headrest support, which engages in the guide slot. If the headrest support is moved upwards, the path of the slot controls the tilt position of the headrest support and thus also the tilt position of the headrest body.
[0051] Preferably, the headrest support is additionally guided by a further guide whose path deviates from the tilt guide surface, so that this double guide causes the aforementioned tilting of the headrest support when the headrest is transferred into the use position. The path of the further guide can, in particular, be straight and deviate from a vertical direction by no more than 20°.
[0052] As a guide, the displacement system can be provided with at least one additional guide edge in addition to the guide slot. This edge can be formed, in particular, directly by the fitting part in which the guide slot is provided as an opening. The edge can be formed, for example, by bending over an edge of the fitting part. At least one sliding surface or guide roller is provided on the headrest support to guide the headrest support along the guide edge.
[0053] Preferably, at least two additional guide edges are provided, each with at least one sliding surface or guide roller for guiding the headrest support along these guide edges. The two guide edges can, in particular, be formed by opposing bent edges of a sheet metal part.
[0054] A further preferred design of the displacement system provides for at least one non-linear guide slot, which is provided in particular as an opening in a sheet metal part fixed to the supporting structure, and for the headrest support to have two slot bodies, both of which are guided in the same guide slot and thus determine the orientation of the headrest support depending on their position in the guide slot. The headrest support, and thus the headrest as a whole, is pivoted in the guide slot by the double guide during the displacement. The course of the guide slot is selected such that the headrest pivots primarily forward in the final phase of the displacement and / or is displaced forward as a whole.
[0055] In a particularly simple version, the headrest can be designed for manual adjustment. In such a case, a spring-loaded mechanism is preferably provided to assist manual adjustment into the use position.
[0056] However, a design in which the headrest is moved by means of an electric drive system associated with the displacement system is considered particularly relevant. This drive system comprises an electric motor with an output element, such as an output shaft or an output rod in the case of a linear actuator. The displacement system is designed to convert the uniform rotary or linear output movement of the output element into a transfer of the headrest according to the mechanically predetermined movement sequence, and in particular to move the headrest first primarily vertically and then primarily horizontally.
[0057] In a design with a primarily vertically movable carriage or tiltable headrest support, the electric motor can be attached to it so that it also moves vertically. In this case, the electric motor preferably drives a drive gear, which is used to move the headrest support. Page 13
[0058] The headrest support engages with a toothed structure of the drive system. The carriage or headrest support is raised and lowered by engagement with the toothed structure fixed to the support structure.
[0059] The aforementioned toothing structure can run in a straight line parallel to a guide. However, it can, in particular, be arranged stationary relative to the guide slot and have a non-straight line corresponding to the guide slot. It can run offset from the actual guide slot or be provided directly on an edge of the guide slot, or even form this edge at least in sections.
[0060] A different arrangement of the electric motor provides that the electric motor acts on a headrest support or the carriage via a pivot lever. The pivot lever can be pivoted about an axis fixed to the supporting structure of the seating furniture or to the fitting attachment, with this pivot axis preferably, but not necessarily, extending in the transverse direction of the furniture. A linear actuator with an extendable output rod is particularly suitable as the electric motor here.
[0061] The pivot lever and the headrest support or the slide each have contact surfaces for transmitting force from the pivot lever to the headrest support or the slide, wherein preferably at least one contact surface is formed by an inner edge of an elongated hole.
[0062] In the above-described design with headrest brackets, by means of which the headrest body and the slide are connected and which thus allows a parallel displacement of the headrest body relative to the slide, the pivot lever and a headrest bracket are coordinated or coupled in such a way that, in the final phase of the movement sequence, the headrest bracket is pivoted relative to the slide, thereby displacing the headrest body forward. The force can be transmitted from the pivot lever to the headrest bracket directly or via an intermediate link movable on the slide.
[0063] As explained above, the invention also relates to a furniture fitting for a piece of seating furniture of the type described. Such a furniture fitting is usually attached to a supporting structure of the piece of seating furniture, for example, to a wooden or metal frame. For this purpose, it comprises at least one fitting part for attachment to the supporting structure, as well as a carriage movable relative to the fitting part or a movable headrest support, which can be moved along a vertical direction of the fitting (+ / -30). 0 ) is movably guided on the fitting. Page 14
[0064] In the case of a design with a headrest support that tilts during transfer, the fitting mechanically defines a movement sequence for transferring this headrest support between a storage position and a use position, whereby following this movement sequence the headrest support is first displaced primarily vertically and is thereby moved upwards and is pivoted forwards in a final phase.
[0065] In the case of a design with a carriage and a headrest body that is movable relative to it or a fitting part that is movable relative to it and serves for the direct attachment of the headrest body, the fitting mechanically defines a movement sequence for transferring the carriage from a lowered position to a raised position and in addition to the relative movement of the headrest body or the corresponding fitting part, wherein following this movement sequence the carriage is initially displaced primarily vertically and is thereby moved upwards and in a final phase the headrest body that is movably attached to the carriage or the corresponding fitting part is displaced forwards relative to the carriage primarily in the longitudinal direction of the furniture.
[0066] The fitting preferably combines all components of the displacement system described above, wherein a fitting part is provided for attaching the headrest body, which is movable in the manner described above by means of the displacement system formed by the fitting.
[0067] In particular, the fitting can have at least one tilt guide surface inclined relative to a vertical direction, by means of which, towards the end of the movement sequence, a tilting moment is exerted on the headrest support about a pivot axis extending in the transverse direction of the furniture. As already explained, the tilt guide surface is preferably part of a non-linear guide slot. The headrest support has at least one slot body that engages with the guide slot, thereby enforcing the tilting.
[0068] Alternatively, the fitting can have a non-linear guide slot in which the headrest support is guided by means of two slot bodies, so that this double guide results in the headrest support assuming a specific orientation depending on its position in the guide slot.
[0069] To displace the headrest support or the slide, the fitting preferably has a toothed structure that extends primarily in the vertical direction and whose course preferably corresponds to the course of a non-linear guide slot (see page 15). An electric motor is provided on the slide or the headrest support, which drives a drive gear that engages with the toothed structure in order to displace the slide or the headrest support vertically relative to fitting parts fixed to the support structure.
[0070] A special design of the fitting provides for two headrest brackets pivotally connected to the slide, pivoting on a fitting part of the headrest, thus enabling the previously described displacement of the headrest body or the corresponding fitting part relative to the slide. By appropriately spacing the pivot axes of the headrest brackets, this displacement is preferably achieved in the form of a parallel displacement.
[0071] BRIEF DESCRIPTION OF THE DRAWINGS
[0072] Further advantages and aspects of the invention emerge from the claims and from the following description of preferred embodiments of the invention, which are explained below with reference to the figures.
[0073] Fig. 1 and 2 show a piece of seating furniture with a movable headrest, which in Fig. 1 is arranged in an invisible storage position within a receiving space and in Fig. 2 in its use position.
[0074] Fig. 3A to 3D and 4A to 4D show a first embodiment of a displacement system for extending and retracting a headrest and a furniture fitting suitable for this purpose.
[0075] Fig.5A to 5D show a second embodiment of a displacement system for extending and retracting a headrest.
[0076] Fig. 6A to 6E show a third embodiment of a displacement system for extending and retracting a headrest.
[0077] Figs. 7A to 7D show a fourth embodiment of a displacement system for extending and retracting a headrest.
[0078] Fig. 8A and 8B show a design of a piece of seating furniture with a special design of a screen for closing the receiving space.
[0079] Fig. 9 illustrates that, in addition to the adjustment of the headrest body using the adjustment system, manual adjustment of the headrest body is also possible. Page 16
[0080] DETAILED DESCRIPTION OF THE EMBODIMENTS
[0081] Figs. 1 and 2 show a piece of seating furniture 10 according to the invention in the form of an armchair with an upholstered seat 14 and an upholstered backrest 16, as well as armrests. Not shown in the figures is a leg rest that can be extended in front of the seat 14.
[0082] Furthermore, the piece of seating furniture 10 has a headrest 20 which can be seen in Fig. 2 and which, in the embodiment of Figs. 1 and 2, has a padded headrest body 26 which is firmly connected to a headrest rod 22.
[0083] The piece of seating furniture 10 is shown in Figs. 1 and 2 in two states, namely in Fig. 1 with the headrest 20 in its stowed position and in Fig. 2 with the headrest 20 in a use position. In the stowed position of Fig. 1 in the headrest 20, the headrest body 26 is arranged invisibly from the outside in a receiving space 18 surrounded by walls behind the backrest 16, wherein this receiving space 18 is closed at the top by a pivotable screen 18A. In the use position of Fig. 2, the headrest body 26 is completely extended out of the receiving space 18 and is supported by the headrest rod 22. The headrest rod 22 is guided through recesses 18D in the screen 18A.
[0084] As already evident from Figs. 1 and 2, the receiving space 18 behind the backrest 16 is quite small. When the headrest 20 is stowed, it is hardly noticeable that the piece of seating furniture 10 contains an extendable headrest 20. The designs described below are designed specifically with a small overall depth in the longitudinal direction 4 of the furniture in mind to enable such an impression.
[0085] A first concrete embodiment is illustrated in Figs. 3A to 4D. First, the essential components and their connection are explained using Figs. 3A and 4A.
[0086] Fig. 3A shows a chair with a headrest design according to the first embodiment in a schematic side view, from which the receiving space 18 behind the backrest 16 and the headrest 20 stowed therein can be seen in particular. Fig. 4A shows the furniture fitting 102, which provides the desired functionality and is arranged in the receiving space 18 and connected to a supporting structure of the piece of seating furniture.
[0087] As can be seen from Fig. 4A, the furniture fitting 102 has two opposing fitting parts 104 that act as fastening flanges. These are firmly connected to the supporting structure of the piece of seating furniture 10 and, in particular, to the walls of the receiving space 18, and are also rigidly connected to one another. For the sake of simplicity, these two fitting parts 104, as well as other components that are provided in duplicate and are identical and mirror images of one another, will be discussed in the singular below.
[0088] The fitting part 104 has a guide slot 130 formed by an opening, which extends primarily vertically, but not exclusively vertically. Instead, the slot extends over approximately 80% of its length, initially slightly inclined backward in a first section 130A, and then bends, so that a second section 130B is oriented obliquely forward.
[0089] Furthermore, the fitting part 104 has guide edges 140, 150 on each of its two vertical edges, which are bent inwards.
[0090] A headrest support 120 is guided through the fittings 104 and in particular the guide slot 130 and the guide edges 140, 150. The headrest support 120 has a slot body 122 on each side, in this case in the form of a rotatable slot roller, which projects into the respective guide slot 130. Furthermore, the headrest support 120 has elements for support on the guide edges 140, 150. A rotatable guide roller 128 is provided for interaction with the guide edge 150. A further guide roller 124 and a circular-segment-shaped sliding surface 126 are provided opposite to interact with the guide edge 140.
[0091] The headrest support 120 has a cross tube on which the aforementioned headrest rod 22 is provided, which connects the headrest support 120 to the headrest body 26. The headrest support 120 is thus rigidly connected to the headrest body 26. All elements of the headrest 20, i.e., the headrest support 120, the headrest rod 22, and the headrest body 26, are thus moved jointly by the displacement system, in particular raised and lowered and pivoted.
[0092] For the purpose of motorized displacement of the headrest support 120 and thus of the entire headrest 20, an electric motor 170 is provided, which drives a drive gear 174 via an output gear 172. This drive gear 174 engages with a toothed structure 160 provided on the fitting part 104 following the guide slot 130. Page 18
[0093] The process of transferring the headrest 20 from the
[0094] Storage position into use position explained:
[0095] As already mentioned, Figs. 3A and 4A show the headrest 20 in its stowed position. The headrest 20, including the headrest body 26, is completely arranged in the receiving space 18. The screen 18A, which is pivotable by means of a hinge 18B attached to a rear wall 18C, is closed, and the seating furniture item 10 has the external appearance shown in Fig. 1.
[0096] Driven by the electric motor 170, the headrest support 120 and with it the entire headrest 20 are moved upward, whereby the headrest 20 is simultaneously displaced slightly downward due to the orientation of the partial section 130A. In this case, the headrest 20 tilts backward, limited by the guide roller 128, which rests against the guide edge 150. A sliding surface on the rear side of the backrest can be used to additionally push the headrest 20 backward.
[0097] Due to the rearward tilted orientation and the aforementioned rearward displacement during the vertical upward movement, the headrest body 26 can be guided smoothly past a rear side of the backrest 16, as shown in Figs. 3B and 3C.
[0098] During the displacement of the headrest 20 from the stowed position in Fig. 3A to the intermediate position in Fig. 3C, the headrest body 26 moves completely out of the receiving space 18. For this to happen, the screen 18A must be opened. This is done by the headrest body 26 first pressing from below against the screen 18A, which is held closed by a spring force, and in doing so pushing it open in the manner illustrated in Fig. 3B. After an upper end surface 28 of the headrest body 26 initially comes into contact with the inside of the screen 18A, the rear of the headrest body 26 then comes into contact with the front edge of the screen 18A and keeps it open. Shortly after reaching the intermediate position in Fig.3C, the headrest rod 22 provided on the rear side of the headrest body 26 finally comes into contact with the screen 18A, specifically in the region of the recesses 18D already described above.
[0099] After reaching the intermediate state shown in Fig. 3C, the continued upward displacement of the headrest support 120 leads to a change in the movement sequence. Since the guide bodies 122 now enter the upper section 130B of the respective guide link 130, the headrest support 120, together with the headrest 20, is now displaced forward in the furniture's longitudinal direction 4 (page 19) and simultaneously pivoted forward clockwise relative to the perspective of Figs. 3C and 3D. Upon reaching the end position shown in Fig. 3D, the guide body is located at the upper end of the guide link 130, and the headrest 20 has reached its use position.The tilting of the headrest support 120 and the headrest 20 that takes place in this last phase results in the sliding surface 126 and finally also the guide roller 124 coming into contact with the guide edge 140, so that now both guide rollers 124, 128 rest on the guide edges 140, 150 and thus stabilize the headrest 20 in this position relative to the longitudinal direction of the furniture.
[0100] In Fig. 3D, the dotted line illustrates the movement path 9 along which the headrest body 26 is displaced during transfer from the stowed position to the use position. It is evident that the movement sequence of the headrest 20 achievable by means of the simply constructed displacement system 100 is very space-saving. The phases of the movement are also clearly visible on the movement path 9: Initially, in the first movement phase, the headrest 20 was primarily displaced vertically, while it is displaced rearward to a lesser extent, partly by the translational displacement due to the guide slot 130, partly by the rotational pivoting about the pivot axis defined by the guide roller 128. Subsequently, the headrest 20 was moved primarily horizontally and finally into the use position, again partly by translation and partly by rotation.
[0101] Retracting the headrest 20 back into its stowed position shown in Figs. 3A and 4A involves a reversed, but otherwise essentially identical, movement sequence. When the direction of rotation of the motor 170 is reversed, the headrest support 120 lowers. Initially, in the first phase of this movement, due to the shape of the partial section 130B of the guide slot 130, the headrest pivots rearward and thus counterclockwise in the perspective of Fig. 3D, until the state shown in Fig. 3C is reached.
[0102] During this pivoting, the screen 18A is pivoted open again, initially by means of the headrest rod 22. As the headrest 20 is lowered, the front edge of the screen 18A then slides over to the rear of the headrest body 26.
[0103] The continued movement of the headrest 20 toward its stowed position is accompanied, corresponding to the movement during extension of the headrest 20, by the headrest body 26 fully immersing into the receiving space 18. Meanwhile, the headrest 20 is pivoted back toward the upright position due to the slight inclination of the partial section 130A of the guide slot 130, so that it finds space in the small receiving space 18. The screen 18A closes due to spring force as soon as the headrest body 26 is fully retracted into the receiving space 18.
[0104] The embodiment shown in Figs. 5A to 5E is externally identical to the previous embodiment when the headrest is arranged in the receiving space in the stowed position. As in the previous embodiment, the headrest is completely accommodated in the receiving space 18 in the stowed position, as can be seen in Fig. 5A.
[0105] This embodiment also provides a furniture fitting 102 comprising two fitting parts 104 that are attached to the supporting structure of the piece of seating furniture 10. As with the previous embodiment, the fitting parts 104 have a guide slot 130 whose shape corresponds to the guide slot 130 in Figs. 3A to 4D. The guide edges 140, 150 are also similar in shape to the previous embodiment.
[0106] Also substantially consistent with the preceding embodiment, the headrest 20 is carried by a headrest support 120 which has a guide body 122 by means of which it is guided in the guide guide 130 and which further has two guide rollers 124, 128 which are provided for rolling or for bearing against the guide edges 140, 150.
[0107] The primary difference from the previous embodiment lies in the design of the drive. While the previous embodiment features an electric motor 170 provided on the headrest support 120, the drive in the embodiment of Figs. 5A to 5E is provided by a linear actuator 180. This linear actuator 180 has a push rod 182 that can be extended relative to a base unit, the end of which is pivotally attached to a pivot lever 186, which in turn is pivotally connected to a supporting structure of the piece of seating furniture 10 or a part of the furniture fitting 102 about a pivot axis 181. By extending the push rod 182, the pivot lever 186 can be pivoted clockwise around the pivot axis 181, relative to the figures.
[0108] At a distal end, the pivot lever 186 has a pin 188 that projects into a slotted guide 121 of the headrest support 120. The extension of the push rod 182 leads, as mentioned, to the pivoting of the pivot lever 186, which in turn raises the headrest support 120. During the lifting of the headrest 20 via the headrest support 120, the pin 188 moves within the slotted guide 121. Page 21
[0109] The resulting movement sequence corresponds to that already described for the first embodiment. First, the headrest support 120 and the headrest 20 are raised and, due to the shape of the guide slot 130, pivoted slightly rearward, so that the rear side of the backrest 16 can be passed without interference during the transition from the intermediate state shown in Fig. 5B to the intermediate state shown in Fig. 5C.
[0110] In the manner already described for the first embodiment, the extension is accompanied by an opening of the screen 18A.
[0111] The continued extension movement of the push rod 182 is then accompanied by an uprighting of the headrest 20 and a displacement forward due to the kink in the guide slot 130, so that the use position of the headrest 20 is reached when the state of Fig. 5D is reached.
[0112] Again, Figure 5D, which shows the use position, shows the movement path 9 along which the headrest body 26 has been displaced.
[0113] The embodiment of Figs. 6A to 6E corresponds to the preceding embodiments in that it is also provided here that a headrest body 26 is initially raised primarily vertically from its storage position in a receiving space 18 behind the backrest and then, in a final phase of the movement, is displaced forward in the furniture longitudinal direction 4 in order to assume its use position above the backrest 16.
[0114] In the embodiment of Figs. 6A to 6E, however, a displacement system 100 is provided to achieve this movement sequence, which differs significantly from that of the previous embodiments.
[0115] The displacement system has a linear and vertically or only slightly inclined guide, in this case in the form of a guide slot 130, by means of which a carriage 110 can be moved vertically within the receiving space. Due to the linear guide slot 130, the carriage 110 always remains in a constant orientation.
[0116] The headrest body 26 is provided displaceably on the carriage 110, wherein the displacement system is designed such that a relative displacement of the headrest body 26 with respect to the carriage only takes place in a late phase of the transfer of the headrest 20 from the stowed position to the use position. Page 22
[0117] In the present case, the headrest body 26 is connected to the carriage 110 by means of two headrest brackets, which are each pivotably mounted on the carriage 110 at a distance from one another and on a fitting part not designated in more detail on the headrest body 26.
[0118] A further special feature of the embodiment of Figs. 6A to 6E is that no screen 18A is provided here, as in the preceding embodiments. Instead, the upwardly facing opening of the receiving space 18 is closed by the upper end surface 28 of the headrest body 26 itself when the headrest 20 is arranged in the stowed position. A corresponding construction is also possible in the preceding embodiments. However, the movement sequence of the headrest body 26 in Figs. 6A to 6E favors such a design.
[0119] A linear actuator 180 corresponding to FIGS. 5A to 5D is provided as the drive for the displacement system 100 of FIGS. 6A to 6E. This is hidden in FIGS. 6A to 6E. The pivoting lever 186 driven by it is shown. The pivoting lever 186 is in turn intended to engage a link 111 on the carriage 110 via a pin 188. The pivoting movement of the pivoting lever 186 thus causes the carriage 110 to be raised, while the pin 188 is simultaneously displaced within the link 111. A right-hand end of the link 111 in the figures is bent so that the continued movement of the pin 188 within the link 111 no longer causes a continued displacement of the carriage 110. This will be explained in more detail below.
[0120] Starting from the stowed position of the headrest in Fig. 6A, the pivot lever 186 is pivoted by means of the linear actuator (not shown).
[0121] In the first phase of the movement, until reaching Fig. 6C, this only causes the headrest body 26 to be raised vertically. The carriage 110 and the headrest body 26, as well as the connecting headrest tabs 112, 114, remain stationary relative to one another until the state shown in Fig. 6C is reached.
[0122] In the state shown in Fig. 6C, the pin 188 on the pivot lever 186 now engages the bent end of the guides 111. The effect of this is that the continued pivoting movement of the pivot lever 186 no longer, or hardly, influences the vertical position of the carriage 110, since the extension of the guides at the bent end corresponds to a tangential direction to the pivot axis 181 of the pivot lever 186. Page 23
[0123] However, the pin 188 now abuts against a driver 118 on an intermediate lever 117, which is pivotally mounted on the slide 110 and, in turn, has a pin by means of which it interacts with a short elongated hole in the headrest brackets 112. The continued movement of the pivot lever 186 therefore pivots the intermediate lever 117 and indirectly the headrest bracket 112. Since this defines a parallelogram with the other headrest bracket 112, the slide 110, and the headrest body 26, both headrest brackets 112, 114 are pivoted together and uniformly, and together displace the headrest body 26 forward.
[0124] Fig. 6D shows an intermediate state. The headrest body 26 has already been displaced slightly forward and has reached its highest position, but is not yet displaced sufficiently far forward in the longitudinal direction 4 of the furniture. Only when the state shown in Fig. 6E is reached, in which the headrest body 26 is slightly lowered again compared to Fig. 6E, is the headrest in its use position.
[0125] In Fig. 6E, the entire movement path 9 is shown by a dotted line. Again, two movement phases are clearly distinguishable, although they are more clearly demarcated from one another than in the previous exemplary embodiments. The vertical rise of the headrest body 26 ends before the forward displacement begins. The forward displacement then subsequently occurs almost horizontally. However, the design of Figs. 6A to 6E can also be adapted such that the vertical displacement overlaps with the horizontal displacement. A simple way of achieving this is to adapt the shape of the link 111 such that its right-hand end no longer runs tangentially to the pivot axis 181 and the carriage 110 is therefore still pushed upward after the pivoting of the headrest tabs 112, 114 has already begun.
[0126] In the embodiment of Figs. 7A to 7D, consistent with the embodiments of Figs. 3A to 5D, a headrest support 120 is again provided, which is displaceable within the receiving space 18 and to which the headrest bodies 26 are attached via a headrest rod assembly 22 for the joint, uniform displacement of the headrest bodies 26. The movement sequence of the headrest 20 is again similar to that of Figs. 3A to 5D.
[0127] To achieve this, the displacement system according to Figs. 7A to 7D has a guide slot 130 through which the headrest support 120 is guided. However, in this design, the headrest support 120 is guided by means of two slotted guide bodies 122, 123, both of which run in the same guide slot 130, so that the headrest support 120 is tilted during vertical displacement.
[0128] One of the edges of the guide slot 130 is formed as a toothed structure 160. An electric motor 170 is provided on the headrest support, the output gear 174 of which meshes with the toothed structure 160, thus enabling the headrest support 120 to be moved.
[0129] The shape of the guide slot 130 has a turning point between the lower end and the upper end, resulting in the overall shape of an elongated letter S. Specifically, the slot has a lowest section 130A, which runs diagonally forward and is angled approximately 20° relative to the vertical direction 2 of the furniture. This is followed by a second vertical section 130B and a short section 130C, which is angled backward. The last section 130D is again oriented diagonally forward and angled approximately 30° relative to the vertical direction 2 of the furniture.
[0130] In the stowed position of the headrest of Fig. 7A, the headrest support 120 is in a basic orientation in which the headrest body 26 is aligned almost vertically.
[0131] When the electric motor 170 is energized, the headrest support 120 moves upwards along the section 130A and the headrest body 26 is moved out of the receiving space 18.
[0132] As soon as the guide bodies 122, 123 reach the second section 130B, the headrest body 26 begins to pivot rearward, thus avoiding a collision with the backrest 16. After both guide bodies 122, 123 have reached the vertical section 130B, as shown in Fig. 7B, the pivoting movement ends and the headrest 20 is raised, initially maintaining the same alignment, until the upper guide body 122 is deflected slightly to the left upon entering the short third section 130C, causing the headrest 20 to pivot slightly further back. This intermediate state is shown in Fig. 7C.
[0133] The continued upward movement of the headrest support 120 causes the upper guide body 122 to retract into the last inclined section 130D, thereby changing its pivoting direction. From this point on, the headrest 20 tilts forward. The maximum inclination is reached when the headrest 20 has reached its use position according to Fig. 7D, and shortly before this, the lower guide body 123 reaches the end of the third section 130C.
[0134] Figs. 8A and 8B show a variant of the design shown in Figs. 7A to 7D, the teachings of which can also be applied to the design shown in Figs. 6A to 6D. A two-part screen is provided to close the opening of the receiving space 18 when the headrest 20 is in the use position. The screen has a first screen section 19A, which is pivotally mounted inward on a rear edge of the opening of the receiving space 18 and is spring-loaded toward the closed position. The second screen section 19A is attached to the headrest 20 itself, in this case to the headrest rod 22.
[0135] When the headrest 20 is transferred from the storage position of Fig. 8A into the use position of Fig. 8B, both panel sections 19A, 19B move into their respective closed positions in which they jointly close the opening of the receiving space 18.
[0136] Although in this example the two aperture sections 19A, 19B together form a screen, an alternative design is also possible in which only one of the two aperture sections 19A, 19B is used and is designed accordingly larger.
[0137] Fig. 9 shows that, in a solution with a headrest support 120, it can be provided that the headrest body 26 can also be manually tilted after reaching the use position. For this purpose, a fairly stiff hinge is provided, by means of which the headrest body 26 can be pivoted relative to a fitting 25 at the distal end of the rod 22. Care must be taken to ensure that such pivoting mobility only occurs to an extent that does not prevent the headrest 20 from being retracted without problems. Preferably, an isolated manual pivotability of the headrest body 26 relative to the rod 22 by no more than 15° is provided, preferably by no more than 10°.
Claims
Page 26 Patent claims 1. A piece of seating furniture (10) with the following features: a. the piece of seating furniture (10) has a seat surface (14) and a backrest (16), and b. the piece of seating furniture (10) has a headrest (20) which can be moved between a storage position and a use position in a guided manner by means of a displacement system (100), and c. the piece of seating furniture (10) has a receiving space (18) surrounded by walls behind the backrest (16) for receiving the headrest (20), in which the headrest (20) is arranged in the storage position, and d. in the use position a headrest body (26) of the headrest (20) is extended upwards out of the receiving space, and e.the displacement system (100) mechanically defines a movement sequence for transferring the headrest (20) from the storage position into the use position, wherein following this movement sequence the headrest body (26) is first displaced primarily vertically and is thereby moved out of the receiving space and in a final phase of the movement sequence is displaced primarily forward in the longitudinal direction (4) of the furniture.
2. A piece of seating furniture (10) according to one of the preceding claims, having the following additional feature: a. in accordance with the mechanically predetermined movement sequence, the headrest (20) is pivoted forward in the final phase of the movement sequence and / or the headrest (20) is pivoted forward in the use position relative to the storage position, preferably having at least one of the following additional features: b. in accordance with the mechanically predetermined movement sequence, the headrest (20) is pivoted forward by at least 10°, preferably by at least 15°, in the use position relative to the storage position, and / or Page 27 c. In accordance with the mechanically predetermined movement sequence, the headrest (20) is pivoted forwards by a maximum of 40°, preferably by a maximum of 30°, in the use position compared to the stowed position.
3. A piece of seating furniture (10) according to one of the preceding claims, with the following additional feature: a. in accordance with the mechanically predetermined movement sequence, the headrest (20) first pivots backwards and then forwards again, preferably with the following additional feature: b. in accordance with the mechanically predetermined movement sequence, the headrest (20) first pivots backwards by an angle of at least 10° and then forwards by an angle of at least 20°.
4. A piece of seating furniture (10) according to one of the preceding claims, with the following further feature: a. the mechanically predetermined movement sequence has two movement phases which are carried out one after the other: in a first movement phase, starting from the stowed position of the headrest (20), the headrest is raised, wherein in this first movement phase the headrest (20) overcomes at least 80% of a vertical distance between the position of the headrest (20) in the stowed position and the position of the headrest (20) in the use position, wherein the headrest (20) preferably pivots backwards in this first phase, and in a second movement phase the headrest (20) is displaced vertically by a maximum of 20% of the vertical distance between the position of the headrest (20) in the stowed position and the position of the headrest (20) in the use position, wherein the headrest (20) pivots forwards by at least 15° in this second phase. Page 28 5. A piece of seating furniture (10) according to claim 1, having the following further feature: a. in accordance with the mechanically predetermined movement sequence, the headrest body (26) is displaced forward in the final phase without changing the orientation of the headrest body (26).
6. A piece of seating furniture (10) according to claim 5, having the following further feature: a. the displacement system (100) is designed to effect the displacement of the headrest body (26) forward in the manner of a parallel displacement by means of two headrest tabs (112, 114) of equal length.
7. A piece of seating furniture (10) according to one of the preceding claims, having the following further feature: a. according to the mechanically predetermined movement sequence, the headrest body (26) is moved vertically by at least 40 cm, preferably at least 50 cm.
8. A piece of seating furniture (10) according to one of the preceding claims, with the following additional feature: a. the piece of seating furniture (10) has a movable screen (ISA) which is separate from the headrest body (26) and which closes off the receiving space (18) in a closed position and releases it in an open position, preferably with the following additional feature: b. the movable screen (ISA) is pivotally mounted to a supporting structure of the piece of seating furniture (10), wherein the movable screen (ISA) is preferably pivotally mounted to a rear wall (18C) of the piece of seating furniture (10), and wherein in particular the screen (ISA) preferably forms a pivotable part of the rear wall. Page 29 9. A piece of seating furniture (10) according to claim 8, with the following additional feature: a. the movable screen (18A) and the headrest (20) are coordinated with one another in such a way that the movable screen (ISA) can assume its closed position when the headrest is arranged both in the use position and in the stowed position, preferably with the following additional feature: b. the movable screen (ISA) has at least one recess (18D) through which a headrest rod (22) of the headrest (20) extends outwards from the receiving space (18) when the headrest (20) is arranged in its use position.
10. A piece of seating furniture (10) according to claim 8 or 9 with the following additional feature: a. the displaceable screen (ISA) and the headrest (20), in particular a rear side of the headrest body (26) and / or a headrest rod assembly (22) of the headrest (20), are coordinated with one another in such a way that the displaceable screen (ISA) is pressed in the direction of its open position by means of the headrest (20) when the headrest (20) is transferred from the stowed position to the use position and preferably also when the headrest (20) is transferred from the use position to the stowed position, preferably with at least one of the following additional features: b. the headrest rod assembly (22) ends on the side of the headrest body (26) at a rear end surface of the headrest body (26), and / or c.the movable screen (ISA) is pressed in phases by a rear end surface of the headrest body (26) and in phases by the headrest rod (22) in the direction of its opening position.
11. A piece of seating furniture (10) according to one of claims 1 to 8, with the following further feature: a. an upper end surface (28) of the headrest body (26) is arranged, when the headrest (20) is arranged in the stowed position, essentially in a plane with an upper end wall of the piece of seating furniture (10) behind the backrest (16) and thus forms a movable part of this end wall in the stowed position, Page 30 preferably with the following additional feature: b. a screen is provided which at least partially closes the upper opening of the receiving space when the headrest is in the use position, this screen being fixedly or movably attached to the headrest and being raised together with the headrest when the headrest is moved from the stowed position to the use position.
12. A piece of seating furniture (10) according to one of the preceding claims, with the following additional feature: a. the displacement system (100) has a headrest support (120), to which the headrest body (26) of the headrest (20) is displaced in a stationary manner, wherein the headrest support (120) is arranged within the receiving space (18) in the stowed position and the use position of the headrest (20), preferably with one of the following additional features: b. the headrest body (26) is connected to the headrest support (120) via a headrest rod assembly (22).
13. A piece of seating furniture (10) according to one of claims 1 to 11, with the following additional feature: a. the displacement system (100) has a carriage (110) which can be moved essentially vertically and preferably in a straight line and to which at least one pivotable headrest bracket (112, 114) is pivotally connected, which connects the carriage (110) to the headrest body (26), preferably with at least one of the following additional features: b. two headrest brackets (112, 114) which can be pivoted about different pivot axes and which are each further pivotally connected to the headrest body (26) are attached to the vertically movable carriage (110), and / or c. the vertically movable carriage (110) is located completely within the receiving space (18) when the headrest (20) has reached the use position. Page 31 14. A piece of seating furniture (10) according to claim 13 with the following additional features: a. the displacement system (100) has a guide device for preferably linear and primarily vertical guidance of the carriage (110), and b. the displacement system (100) has a force coupling surface on at least one headrest bracket, which is subjected to a force during a displacement of the carriage in the vertical direction in the final phase of the movement and thereby causes a pivoting movement of the headrest bracket, by means of which the headrest body is displaced forwards, preferably with one of the following additional features: c. the force is applied to the force coupling surface by means of a pressure surface fixed to a supporting structure of the piece of seating furniture, or d. the force is applied to the force coupling surface by means of a pivoting lever, by means of which a displacement of the carriage is also caused.
15. A piece of seating furniture (10) according to one of the preceding claims, with the following further feature: a. the displacement system (100) has at least one tilting guide surface (132) inclined relative to a vertical direction of the furniture, by means of which a tilting moment is exerted on the headrest (20) towards the end of the movement sequence.
16. A piece of seating furniture (10) according to claim 15, having the following additional features: a. the displacement system (100) has at least one non-linear guide slot (130), wherein the tilting guide surface (132) is part of this guide slot (130), and b. at least one slot body (122) is provided on a headrest support (120), which engages in the guide slot (130), preferably with the following additional feature: Page 32 c. the guide slot (130) is provided as an opening in a fitting part (104) of the displacement system (100).
17. A piece of seating furniture (10) according to claim 16 with the following additional features: a. in addition to the guide slot (130), the displacement system has at least one further guide edge (140, 150) for guiding the headrest support (120), and b. at least one sliding surface (126) or a guide roller (124, 128) for guiding on the guide edge (140, 150) is provided on the headrest support (120), preferably with at least one of the following additional features: c. the further guide edge (140, 150) is formed by that fitting part (104) in which the guide slot (130) is provided as an opening, and / or d. in addition to the guide slot (130), the displacement system has two opposing further guide edges (140, 150) for guiding the headrest support (120), wherein for each of the further guide edges (140, 150) on the headrest support at least one sliding surface (126) or one guide roller (124, 128) is provided, and / or e.the at least one further guide edge (140, 150) is straight.
18. A piece of seating furniture (10) according to any one of the preceding claims, having the following additional features: a. the displacement system (100) has at least one non-rectilinear guide slot (130), and b. the headrest support (120) has two slot bodies (122, 123) which are guided in the guide slot (130) and thereby determine the orientation of the headrest support (120) depending on their position in the guide slot.
19. A piece of seating furniture (10) according to any one of the preceding claims, having the following additional features: a. a drive system is associated with the displacement system (100), and Page 33 b. the drive system has an electric motor (170, 180) with an output member (172, 182), the uniform output movement of which is converted by means of the displacement system (100) into a transfer of the headrest (20) in accordance with the movement sequence mechanically predetermined by the displacement system.
20. A piece of seating furniture (10) according to claim 19 with the following additional features: a. the electric motor (170) is provided on a headrest support (120) of the headrest (20), and b. the electric motor (170) drives a drive gear (174) which engages with a toothed structure (160) of the drive system for displacing the headrest support (120), preferably with the following additional feature: c. the toothed structure (160) is arranged in a stationary manner relative to the guide slot (130) and has a non-rectilinear course corresponding to the guide slot (130), wherein in particular preferably the toothed structure is provided on an edge of the guide slot (130) and in particular preferably forms this edge at least in sections.
21. A piece of seating furniture (10) according to claim 19 with the following further feature: a. the electric motor (180) acts via a pivoting lever (186) on a headrest support (120) or a carriage (110), preferably with the following additional feature: b. the pivoting lever (186) and the headrest support (120) or the carriage (110) each have contact surfaces (188, 111, 121) for transmitting force from the pivoting lever (186) to the headrest support (120) or the carriage (110), wherein at least one contact surface (111, 121) is formed by an inner edge of a link (111, 121), and / or c. the electric motor (180) is designed as a linear actuator. Page 34 22. A piece of seating furniture (10) according to claim 21, with the following additional feature: a. the pivoting lever (186) and a headrest bracket (112) are coordinated or coupled to one another in such a way that, in the final phase of the movement sequence, the headrest bracket is pivoted relative to the carriage, thereby displacing the headrest body forward, preferably with the following additional feature: b. the force is transmitted from the pivoting lever (186) to the headrest bracket (112) via an intermediate member (117) which is pivotally and movably guided on the carriage (110).
23. A piece of seating furniture (10) according to any one of the preceding claims, having at least one of the following additional features: a. the headrest (20) has a curved headrest rod (22) which, when the headrest (20) is arranged in the use position, extends out of the receiving space (18) and from the rear over an upper side of the backrest (16), and / or b. the piece of seating furniture (10) has an extendable leg rest.
24. Furniture fitting (102) for a piece of seating furniture (10) for controlling the extension and retraction of a headrest (20) from a receiving space (18) of the piece of seating furniture (10), having the following feature: a. the furniture fitting (102) has at least one fitting part (104) for attachment to a supporting structure of the piece of seating furniture (10) and a carriage (110) movable relative to the fitting part (104) or a movable headrest support (120), and characterized by one of the following further features: b. the furniture fitting (102) mechanically defines a movement sequence for transferring the headrest support (120) between a storage position and a use position, wherein, following this movement sequence, the headrest support (120) is first displaced primarily vertically and is thereby moved upwards in the receiving space (18) and pivoted forwards in a final phase, or Page 35 c. the furniture fitting (102) mechanically defines a movement sequence for transferring the carriage (110) from a lowered position to a raised position and for the relative movement of a headrest body (26), wherein following this movement sequence the carriage (110) is initially displaced primarily vertically and is thereby moved upwards in the receiving space (18) and in a final phase the headrest body (26) movably attached to the carriage (110) is displaced forwards relative to the carriage (110) primarily in the longitudinal direction (4) of the furniture.
25. Furniture fitting (102) for a piece of seating furniture (10) according to claim 24, with the following additional feature: a. the furniture fitting (102) has at least one tilting guide surface (132) which is inclined with respect to a vertical direction and by means of which a tilting moment is exerted on the headrest support (120) towards the end of the movement sequence, preferably with the following additional features: b. the furniture fitting (102) has at least one non-rectilinear guide slot (130), the tilting guide surface (132) being part of this guide slot (130), and c. at least one slot body (122) which engages in the guide slot (130) is provided on the headrest support (120).
26. Furniture fitting (102) for a piece of seating furniture (10) according to claim 24, with the following additional features: a. the furniture fitting (102) has at least one non-rectilinear guide slot (130), and b. the headrest support (120) has two slot bodies (122, 123) which are guided in the guide slot (130) and thereby determine the orientation of the headrest support (120) depending on their position in the guide slot. Page 36 27. Furniture fitting (102) for a piece of seating furniture (10) according to claim 24 or 25, with the following additional features: a. the furniture fitting (102) has at least one toothed structure (160) which extends primarily in the vertical direction and whose course preferably corresponds to the course of the non-rectilinear guide slot (130), and b. an electric motor (170) is provided on the headrest support (120) or on the carriage (110), which electric motor drives a drive gear (174) which engages with the toothed structure (160).
28. Furniture fitting (102) for a piece of seating furniture (10) according to claim 24, having the following further features: a. the furniture fitting (102) has two headrest brackets (112, 114) pivotably connected to the carriage, and b. the headrest brackets (112, 114) are further pivotably connected to a fitting part of the headrest (20).
Citation Information
Patent Citations
seating / lying furniture
DE20000601U1
Upholstered furniture comprising a head rest
US3275374A