EP3136913A1 - Piece of seating furniture, and fitting therefor - Google Patents
Piece of seating furniture, and fitting thereforInfo
- Publication number
- EP3136913A1 EP3136913A1 EP15719455.6A EP15719455A EP3136913A1 EP 3136913 A1 EP3136913 A1 EP 3136913A1 EP 15719455 A EP15719455 A EP 15719455A EP 3136913 A1 EP3136913 A1 EP 3136913A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fitting
- spring
- furniture
- sections
- leg rest
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920001971 elastomer Polymers 0.000 abstract description 10
- 239000000806 elastomer Substances 0.000 abstract description 10
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000013536 elastomeric material Substances 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
- A47C7/5062—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type rectilinearly
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/50—Supports for the feet or the legs coupled to fixed parts of the chair
- A47C7/506—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
- A47C7/5066—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation
- A47C7/5068—Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type by rotation actuated by linkages
Definitions
- the invention relates to a piece of seating furniture, in particular in the manner of an armchair or a sofa, with a seat and a leg rest, which is arranged between a stowage position in which the leg rest in monrochraum below the seat, and a Nutzwolf in which the leg rest in furniture longitudinal direction the seat is arranged, is displaceable.
- the leg rest is formed variable in length by two mutually displaceable fitting sections of the leg rest.
- These two fitting sections of the leg rest can be subjected to force by a spring section of a spring device acting on a first of the two fitting sections between a first force introduction point and a second force introduction point on a second of the two fitting sections.
- This spring section is stretched relative to each other in dependence on the relative positions of the fitting sections and exerts a force on the fitting sections.
- the invention also relates to a fitting for such a generic piece of seating furniture.
- Generic pieces of seating furniture are characterized by their leg unit forming a leg rest.
- the leg rest when not in use, is placed in the aforementioned stowage position, in which it is hidden beneath the seat surface. If the leg rest is required to take a more comfortable sitting position with raised legs, the leg rest is spent for this purpose in the use position, in particular by a pivoting movement in which it is in front of the seat and this extends quasi.
- legrest is variable in length. Under a change in length, the change sensitivity of the leg rest relative to the use position in the longitudinal direction of the furniture, ie in the direction of extension of the legs resting on the leg rest.
- the Callnver Sritt the leg rest is realized in that it comprises at least two fitting portions which are movable against each other in a moving relative to the leg rest Relativverlagerungsplatz and thereby may have a different stowing position and use position of the leg rest spacing from one another.
- a linear guide is provided between these two fitting sections of the leg rest.
- the starting point of the invention is such a design in which a spring means is provided, which comprises a spring portion which acts directly or indirectly between the two fitting portions. This leads to a permanent application of force to the two fitting sections against each other, so that they permanently have the tendency to move towards or away from each other and thereby increase the legrest or reduce.
- the object of the invention is therefore to develop a generic piece of seating furniture to the effect that this at least partially overcomes the described problems of the prior art in a structurally simple manner.
- the two force introduction points on the two fitting sections of the leg rest are offset from one another in a furniture transverse direction, so that the spring section assumes a diagonal direction of extent approximately in a plane defined by the furniture transverse direction and the relative displacement direction.
- the spring portion is thus effective between two points in the manner of attachment points or deflection points on the two fitting portions, which are arranged offset in the furniture transverse direction.
- the force application point on the first fitting portion of the leg rest could be arranged on the left side of the piece of furniture or the leg rest, while the second force introduction point is arranged on the second fitting portion on the right side of the piece of furniture or the leg rest.
- the diagonal extent of the spring portion leads to the reduction of the required elongation. Since the force application points are moved relative to each other only in Relativverlagerungscardi the fitting sections, but not in the orthogonal furniture transverse direction in the course of shortening or lengthening of the leg rest, a spring with a significantly lower elongation can be used without causing the outer dimensions of the leg rest undergo a change , Thus, metal coil springs can be used in such a diagonal orientation, which must be stretched by no more than 20% to 30% compared to their relaxed state with retracted leg rest, for example, to allow an extension or shortening of the leg rest of 20 to 30 cm.
- the diagonal alignment is preferably given both in the use position of the leg rest and in the stowage position of the leg rest. In principle, however, it is also conceivable that in one of these positions the force introduction points are at the same height with respect to the relative displacement direction, so that the spring section in such an extreme position could also be aligned almost in the transverse direction of furniture.
- the spring section is formed as an elastomeric spring section.
- conventional spring means is therefore proposed to use a spring means of an elastomeric material. It has been found that this is able to relatively large strains and therefore is well suited for the stated application.
- Elastomer material in the sense of the invention is understood to be an elastically extensible material based on plastics and / or natural rubber. Of particular advantage is a combination in which a plurality of natural rubber / natural rubber strands are arranged within a plastic sheath. As a result, a high external chemical and mechanical stability at the same time particularly good stretching behavior can be achieved.
- the said wrapper may be made of polyester, for example.
- the internal strands are preferably intertwined or otherwise interlaced to increase stability.
- the stretching behavior of the spring portion of elastomeric material is such that a longitudinal elongation of 100% is achieved with a force of between 20 Newton and 50 Newton.
- the elastomeric spring portion is formed in the manner of a strand of constant cross-section, which may for example be round, square or rectangular. This allows a simple type of deflection, the advantages of which will be explained below.
- the distribution of the applied spring force on more than one spring section makes it possible to use spring sections with lower spring coefficients, which in turn a relaxation of the spring sections can be reduced.
- two or more preferably diagonally extended spring sections are used, it is of particular advantage if these are connected in one piece with one another and, in particular, are preferably deflected by a common one of the force introduction points.
- two force introduction points on one of the two fitting sections can each serve as fastening points for the two ends of said double spring section, while these are laid around the force introduction point on the other fitting section between these two ends.
- a rotatable roller or a simple pin can be used.
- more than two spring sections are usable.
- the required spring forces and in particular the width of the leg rest it may be advantageous to have at least three preferably diagonally extended spring sections which are preferably integrally connected to one another in a zig-zag arrangement between force introduction points at the two fitting sections to arrange.
- the spring sections are preferably part of a one-piece spring means, in particular a common elastomer band.
- elastomeric band When using such an elastomeric band is, as already mentioned, preferably provided that this is deflected by rollers or pins. Such a deflection is particularly advantageous if the elastomeric band is arranged in sections between force application points on the same fitting section. Such a section, which in particular may preferably be oriented in the transverse direction of furniture, offers a further extension of the spring means and, if a suitable deflection is provided, allows a further reduced elongation in the course of the transfer of the leg support between the storage condition and the use condition. It may be particularly advantageous, in particular in this context, when the elastomeric band is formed as a closed elastomeric band and thus is quasi ring-shaped.
- the force application points at the fitting portions in such a case are designed as deflection points around which the elastomeric band is wrapped.
- partial regions of this elastomeric strip are also provided between force introduction points on the same fitting section, which extend in particular in the transverse direction of furniture.
- a common leg rest is conceivable for several persons sitting on a sofa.
- the hitherto conventional systems with only one spring means which is usually arranged on one of the two sides, poorly suited, since there are problems with regard to the tilting of the fitting sections against each other.
- the design with at least two spring sections allows a similar application of force to the fitting sections eccentrically on both sides, in particular at their opposite ends in the furniture transverse direction, whereby a harmonious and tilt-free lengthening and shortening of the legrest can be realized.
- the two directions of action of the spring devices are conceivable in which the spring device acts either in the direction of an enlargement or in the direction of a reduction of the leg rest.
- the respective opposite change in size effect is effected by the control already mentioned above.
- Particularly preferred is a design in which the spring device acts on the fitting portions of the leg rest in the direction of enlargement of the leg rest. This means that the spring device is in a tensioned state when the leg rest is in the stowed position and thus reduced in size. Based on this, the state of stress in the spring device decreases when the leg rest is enlarged in the course of its transfer to its use position.
- the already mentioned control member which counteracts the spring force caused by the spring device and thus in the transfer of the leg rest in the stowed position or the use position, in particular in the stowed position, the spring device biases, is preferably designed as a cable, which acts on one of the fitting sections, so that this is displaced by a tensile force on this cable against the spring force of the spring device relative to the other fitting portion.
- a cable is understood to be any shape-variable control member, which is designed only for the transmission of tensile forces. Instead of a cable, however, a rigid element can also be used.
- the Relocation of the control member can be done by its direct or indirect connection to other fitting sections of the piece of furniture, which are also relative to each other or relative to the base relocatable.
- the seat unit is also displaceable relative to the base.
- the invention also relates to a fitting for a piece of seating furniture, which is designed as a fitting of the seat furniture piece described above.
- 1 a to 2b show a seat piece of furniture according to the invention when its leg rest is arranged in a stowage position or a use position
- Fig. 8 is a legrest particular width.
- 1 a to 2b show a seating piece of furniture according to the invention, in particular its fitting components with hidden upholstery sections.
- 1 a and 1 b the seat piece of furniture arranged in a stowed leg rest, while Figs. 2a and 2b show the piece of seating furniture transferred to the use position leg rest.
- the seating furniture 10 is formed in the manner of an armchair. It has a base 12 which is provided for fixed or, equipped with rollers, for displaceable arrangement on a substrate. Above this base 12, a seat unit 14 is provided with a seat surface 14 '. At the rear, this is followed by a backrest unit 16.
- a leg unit 18 is below the seat unit 14 and thus in its stowed position. This case-by-case leg unit 18 serving as a leg rest is also padded, so that its padding surface 18 'pointing downwards in the illustrated stowage position forms a leg support surface 18' after being transferred to the use position.
- the leg unit 18 is pivotable about a pivot axis 8 oriented in the direction of furniture transverse direction.
- the leg unit 18 can be pivoted about the aforementioned pivot axis 8, so that it assumes an approximately horizontal use position.
- the leg support surface 18 ' is then aligned approximately flush with the seat surface 12' and allows comfortable sitting with raised legs.
- the leg unit 18 changes its length during this transfer from the stowage position of FIG. 1 a into the use position of FIG. 2 a.
- This change in length is required, on the one hand in the state of Fig. 2a to provide a sufficiently large surface for supporting the legs available, but on the other hand to stow the leg unit 18 in the state of Fig. 1a and in particular the pivoting movement in the transfer of the Useful of Fig. 2a in the stowage position of Fig. 1 a to allow.
- a pivoting movement of the leg unit 18 in the stowed position would not be possible because the leg unit would then collide with the ground or the base 12.
- the leg unit 18 comprises two mutually movable fitting portions 30, 40.
- the fitting portion 30 is that which can be pivoted about said pivot axis 8 directly is.
- the distal fitting portion 40 pivots together with this fitting portion 30, but with respect to this is linearly movable.
- linear guides 28 on the fitting portions 30, 40th intended.
- a flexible band 26 is provided, which is attached to the one of the outer of the two fitting portions 40 and coupled to the other such with the seat unit 14, that it is in their movement from the position of Fig. 1 a in the other hand Lowered position of Fig. 2a behaves releasing length and thus allows the extension of the fitting portion 40.
- This band 26 is hidden in FIGS. 1 a, 1 b and 2 a and dotted only in FIG. 2 b.
- the band 26 acts as a control member for controlling the change in length of the leg unit 18.
- This spring device 50 acts between the two fitting sections 30, 40, being connected to the two fitting sections 30, 40 such that the spring force acts in the direction of the extended state of the leg unit, that is to say the state which the leg unit occupies in the use position.
- the fitting portion 40 has a circumferentially closed frame-like structure, which includes, inter alia, two transverse members 42, 42.
- the fitting portion 30 has a U-shaped basic shape and also has a cross-beam 32. At one of the transverse members 42 of the fitting portion 40, a guide roller 43 is provided. At the cross-beam 32 of the fitting portion 30, two respective outer deflection rollers 33 are provided.
- the three deflection rollers 33, 43 are jointly surrounded by an elastomeric strand 53, which preferably has a round cross section similar to a large O-ring.
- the elastomeric strand 53 is under tension in this jam state, this applies to both two portions 53 a, which are extending between the guide rollers 33 and 43 serving as force introduction points, as well as for furniture transverse direction 2 extending portion 53 b, between the two guide rollers 33rd extends at fitting portion 30.
- the control belt 26 forces this tensioned state of the spring device 50, as shown in FIGS. 3a and 3b.
- the leg unit 18 is thus held in its compact state.
- the seat unit 14 is displaced towards the base 12 to the rear and the leg unit 18 is pivoted in the direction of its use position, so the control band 26 is continuously released so that it is a through the spring device 50th caused enlargement of the leg unit 18 allows.
- the elastomeric strand 53 contracts until, when the leg unit is extended, it reaches its maximum relaxed state in accordance with the state shown in FIG. 3b, when the fitting section 40 is displaced maximally with respect to the fitting section 30.
- Figures 4 to 7 show a number of alternative designs.
- a conventional metallic helical spring 54 is used, which is fastened to the fitting sections 30, 40 at merely indicated force introduction points 34, 44.
- a deflection corresponding to the deflection rollers 33, 43 of Fig. 3a and 3b is not provided here.
- the diagonal orientation of a coil spring can be of considerable advantage.
- the stretched condition shown in FIG. 4 because of the diagonal arrangement, merely means an elongation of about 15-20% with respect to the stretched state when the leg unit 18 is enlarged.
- the metallic coil spring shown there is replaced by an elastomer strand connected on both end fitting sections 30, 40.
- an elastomeric strand 55 is also used, which, unlike the elastomeric strand 53 of FIGS. 3 a and 3 b, is fastened to the fitting section 30 in the region of force introduction points 35.
- a deflection roller 45 is similar to that shown in Fig. 3a provided. However, in the present case, this only serves to facilitate assembly.
- two separate elastomer strands Use find that where the guide roller 45 is provided, each connected to the fitting portion 40.
- Fig. 6 shows an arrangement in which instead of the two extending between the fitting portions 30, 40 portions of the spring means 50 three such spring portions 56a are provided, which are each end firmly connected on the one hand with the fitting portion 30 and on the other hand with the fitting portion 40 ,
- the increase in the number of sections of the spring device extending between the fitting sections makes it possible to provide these with a reduced spring coefficient, whereby they are jointly able to effectively replace an elastomer strand with a higher spring coefficient.
- Fig. 7 shows a development of the design according to FIG. 3a, in which two deflection rollers 47 are provided on the side of the fitting portion 40 instead of a deflection roller 43. On the side of the fitting portion 30, three deflection rollers 37 are provided instead of two deflection rollers 33. Similar to Fig. 6, the portions 57 of the spring means 50 are thus again provided in a kind of zig-zag structure.
- Fig. 8 shows a further embodiment of the invention. Shown is the jam condition of the leg unit 18 provided here.
- the peculiarity of the design according to FIG. 8 is the width of the leg unit 18. Referring to the furniture transverse direction 2, this has a width of about 80 cm.
- the spring device which acts in the direction of the change in size of the leg unit 18, in turn, is formed as elastomer strand 58, which forms in this case approximately a quadrilateral, which is due to two guide rollers 48 on the fitting portion 40 and two guide rollers 38 on the fitting portion 30.
- the spring sections 58a which extend between the two fitting sections 30, 40, are again diagonally aligned, although this is not absolutely necessary.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014207972.1A DE102014207972A1 (en) | 2014-04-28 | 2014-04-28 | Seating furniture and fitting for this |
PCT/EP2015/058958 WO2015165825A1 (en) | 2014-04-28 | 2015-04-24 | Piece of seating furniture, and fitting therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3136913A1 true EP3136913A1 (en) | 2017-03-08 |
Family
ID=53016598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15719455.6A Withdrawn EP3136913A1 (en) | 2014-04-28 | 2015-04-24 | Piece of seating furniture, and fitting therefor |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150305507A1 (en) |
EP (1) | EP3136913A1 (en) |
CN (2) | CN105011609B (en) |
DE (1) | DE102014207972A1 (en) |
WO (1) | WO2015165825A1 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013219659A1 (en) * | 2013-09-27 | 2015-04-02 | himolla Polstermöbel GmbH | Seating / reclining furniture |
EP3060472B1 (en) * | 2013-10-21 | 2018-04-11 | B/E Aerospace, Inc. | Linearly deployable aircraft seat legrest |
KR101664690B1 (en) * | 2015-05-20 | 2016-10-11 | 현대자동차주식회사 | An seat cushion extensioning apparatus for cars |
US9549615B1 (en) * | 2015-09-02 | 2017-01-24 | Dongguan Kentec Office Seating Co., Ltd. | Retractable leg rest for chair |
EP3192398B1 (en) * | 2016-01-15 | 2019-12-11 | himolla Polstermöbel GmbH | Seat or lounger |
DE102016106477A1 (en) * | 2016-04-08 | 2017-10-12 | himolla Polstermöbel GmbH | SEAT / LIEGE FURNITURE |
GB2563003B (en) * | 2017-05-23 | 2019-10-02 | Ford Global Tech Llc | A Deployable footrest |
WO2019088894A1 (en) * | 2017-11-06 | 2019-05-09 | Ikea Supply Ag | Seating furniture support arrangement |
US10632037B2 (en) * | 2018-02-01 | 2020-04-28 | Medical Technology Industries, Inc. | Programmable examination and procedure tables and chairs |
DE102019203553A1 (en) * | 2019-03-15 | 2020-09-17 | Volkswagen Aktiengesellschaft | Lower leg support device for a vehicle seat, vehicle seat |
US10888136B1 (en) * | 2020-01-13 | 2021-01-12 | Robert A. Deane | Apparatus for assistance in putting on and removing footwear |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1790884A (en) * | 1931-02-03 | Maktin thum | ||
GB1375094A (en) * | 1972-02-02 | 1974-11-27 | ||
DE10302208A1 (en) * | 2003-01-22 | 2004-07-29 | Klöber GmbH | Chair with quickly adjustable energy storage |
US7121627B2 (en) * | 2004-10-08 | 2006-10-17 | B/E Aerospace, Inc. | Leg-rest extension |
DE102012204670B4 (en) * | 2012-03-22 | 2013-10-17 | Kintec-Solution Gmbh | Fitting system for a piece of seating furniture, seating piece therewith and method for adjusting a fitting system |
DE102012214541A1 (en) * | 2012-08-15 | 2014-05-22 | Kintec-Solution Gmbh | Fitting for a piece of seating furniture |
-
2014
- 2014-04-28 DE DE102014207972.1A patent/DE102014207972A1/en not_active Ceased
- 2014-06-27 CN CN201410322634.9A patent/CN105011609B/en active Active
- 2014-06-27 CN CN201420368848.5U patent/CN204318089U/en active Active
-
2015
- 2015-04-24 EP EP15719455.6A patent/EP3136913A1/en not_active Withdrawn
- 2015-04-24 WO PCT/EP2015/058958 patent/WO2015165825A1/en active Application Filing
- 2015-04-27 US US14/696,868 patent/US20150305507A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE102014207972A1 (en) | 2015-10-29 |
CN105011609B (en) | 2019-12-17 |
US20150305507A1 (en) | 2015-10-29 |
CN204318089U (en) | 2015-05-13 |
CN105011609A (en) | 2015-11-04 |
WO2015165825A1 (en) | 2015-11-05 |
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