EP4061182B1 - Seat swivel mechanism for upholstered furniture - Google Patents
Seat swivel mechanism for upholstered furniture Download PDFInfo
- Publication number
- EP4061182B1 EP4061182B1 EP21799359.1A EP21799359A EP4061182B1 EP 4061182 B1 EP4061182 B1 EP 4061182B1 EP 21799359 A EP21799359 A EP 21799359A EP 4061182 B1 EP4061182 B1 EP 4061182B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frame
- upper frame
- arms
- insets
- sliders
- 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.)
- Active
Links
- 230000001154 acute effect Effects 0.000 claims description 5
- 239000006260 foam Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 241000237970 Conus <genus> Species 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 208000007623 Lordosis Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/18—Chairs or stools with rotatable seat
Landscapes
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Seats For Vehicles (AREA)
- Special Chairs (AREA)
Description
- The object of the invention is a swivel mechanism for the seat of an upholstered piece of furniture, facilitating the adoption of the correct anatomical position for a seated person, in particular for the lordosis section of the spine subject to degeneration.
- A rotary mechanism is known from European patent description
EP1000569 . The mechanism consists of two profiled plates moving horizontally relative to each other through friction-reducing bearing balls. Introduction into motion is by means of a handle mounted on a conical wedge, and movement takes place about a central axis concentrically aligning the lower and upper plates. The disadvantage of this solution is the additional element in the form of the handle, which must be offset from the seat of the furniture, which reduces the visual quality of the furniture. The second disadvantage is the use of bearing balls set close to the axis of rotation, which implies the use of only seats with specific dimensions. The use of larger sized seats causes the whole mechanism to sway. - Also known from Japanese patent description
JP2009142364 - Also known from the Polish utility model description Ru.062376 is a mechanism slightly modified in comparison with the invention
EP1000569A1 consisting of two plates separated by bearing balls. The upper plate and the lower plate are axially fixed to each other at the intersection of the symmetry axes of both plates. As in Japanese descriptionJP2009142364 - From the Polish patent description
PL216214 - The document
JP S56 106936 U - The seat swivel mechanism for upholstered furniture consists of a rectangular top frame and a bottom frame. Two sliders, one for each arm respectively, are attached to the rectangular upper frame on two adjacent arms on their bottom surface. The sliders have longitudinal ball-shaped cavities along their entire length at the bottom. On one of the other arms of the top frame there is a rectangular projection in the plane of the top frame, to the lower surface of which tabs with sliders are attached.
- The base frame has five arms and has two broader arms at right angles to each other and two narrower arms at acute angles to each other, connected by a fifth arm. On the arms at right angles to each other there are fixed on their upper surfaces linear guides of L-shaped cross-section with longitudinal tabs of circular profile. On the wider arms of the base frame there are two curved guides, one for each arm respectively. In addition, on the wider arms of the base frame, there are two oval windows, one for each arm respectively.
- Preferably, a pin is attached to the slider of the upper frame.
- Preferably, between the pin and the upper frame there is a sliding sleeve aligned axially with the pin.
- Preferably, between the tabs of the upper frame and the curved guides of the lower frame there are rubber dampers.
- Preferably, the longitudinal ball-shaped cavities of the upper frame slider have a greater clearance in relation to the longitudinal linear tabs of the guides.
- The lower frame is fixed to the furniture and the upper frame is fixed to the seat.
- The top frame, which is open on the inside, facilitates the assembly and use of the seat springs, so that the seat springs bend freely without unnecessarily increasing the acoustics of the furniture.
- The rectangular upper frame moves parallel to the lower frame in a reciprocating motion along a circular path with an angle of 90°. The movement of the upper frame is determined on one side by sliders which move along linear guides of "L" cross-section with longitudinal insets of circular profile. The opposite part of the upper frame is locked by sliders from below and by insets from above, clasping against two curved guides. The longitudinal ball-shaped cavities of the top frame slider have greater clearance than the longitudinal linear insets of the guides, allowing slight rotation of the sliders, which are fixed to the top frame, while the opposite part of the top frame with insets moves along a track in the shape of a an oval section. The movement of the insets in the horizontal position is unlimited parallel to the base frame. The movement of the insets in the vertical position is restricted both from above and below. Restriction from above is provided by two curved guides. The bottom frame movement is limited from below by means of glides screwed to the insets. All movement of this part of the upper frame is carried out by the movement of the glides on the lower frame. However, in extreme settings of the swivel joint (0° and 90° angle) with the axis of rotation outside the central axis, through the windows into which the sliders fall, under the influence of gravity resulting from the seat, the foams, the user and the assembly of elements itself, the swivel mechanism is blocked.
- The swivel mechanism allows the upper frame to rotate by 90°, occupying two extreme positions relative to the stationary lower frame. In one extreme position the user is in a semi-recumbent/reclining position, in the other extreme position the user is in a sitting position. In both extreme positions, the mechanism locks by gravity under the influence of the weight of the foams and the user. According to the state of the art, in most cases the axis of rotation of the mechanism runs perpendicular to the point of intersection of the axes of symmetry. This creates a central axis, inside the mechanism, around which the points of the mechanism move along a track of constant radius. In the present invention, thanks to the applied new construction of the rotary mechanism, the momentary axis of rotation is remote from the set of elements, which allowed to reduce the dimensions of the upholstered seat screwed to the mechanism. This also made it possible to use a top frame open from the center, which implies a reduction in the acoustics of the seat springs hitting the top plane of the mechanism.
- The object of the invention in the embodiment is shown in the drawing where
Fig. 1 shows the mechanism in top view,Fig. 2 shows the mechanism responsible for blocking the movement in vertical position in side view,Fig. 3 shows the cross-section of the mechanism responsible for the movement of the slider in straight line in side view,Fig. 4 shows the detail of the tabs blocking the upper frame in vertical movement,Fig. 5 shows the rotary mechanism in perspective view. - The seat swivel mechanism of an upholstered furniture consists of a rectangular
upper frame 1 and alower frame 2. To the rectangularupper frame 1, on two adjacent arms, on their lower surface, twosliders 10 are fixed, respectively, one for each arm. Thesliders 10 along their entire length are provided with longitudinal ball-shaped cavities 10a at the bottom. On one of the other arms of theupper frame 1 there is arectangular protrusion 13 in the plane of theupper frame 1, to the lower surface of which there arefixed insets 13a withsliders 14. - The
bottom frame 2 is five-armed and has two wider arms perpendicular to each other and two narrower arms positioned towards each other at an acute angle, connected by a fifth arm. On the arms positioned towards each other at acute angles,linear guides longitudinal insets 8 of circular profile are mounted on their upper surfaces. On the wider arms of thebase frame 2 there are twocurved guides base frame 2 there are twooval windows 15 respectively one for each arm. The longitudinal ball-shaped cavity 10a of theslider 10 of theupper frame 1 have greater clearance with respect to thelongitudinal inset 8 of thelinear guides lower frame 2 is fixed to the furniture and theupper frame 1 is fixed to the seat. -
Upper frame 1 open from the inside facilitates the installation and use of the seat springs, so that the seat springs bend freely without unnecessarily increasing the acoustics of the furniture. - The rectangular
upper frame 2 moves parallel to thelower frame 1 in reciprocating motion in a track of circular section, with an angle of 90°. The movement of theupper frame 2 is fixed on one side bysliders 10, which move alonglinear guides longitudinal insets 8 of circular profile. The opposite part of theupper frame 1 is locked bysliders 14 from below, and byinsets 13a from above, clasping against twocurved guides cavities 10a of theslider 10 of theupper frame 1 have a greater clearance with respect to thelongitudinal insets 8 of thelinear guides sliders 10, which are fixed to theupper frame 1. On the other hand, the opposite part of theupper frame 1 with theinsets 13a moves along a track in the shape of an oval section. The movement of theinsets 13a in the horizontal position runs without restriction parallel to thebottom frame 2, while the movement of theinsets 13a in the vertical position is restricted both from above and from below. Restriction from above is realized by twocurved guides bottom plate 2, by means ofsliders 14 screwed to theinsets 13a, restricts movement of theupper frame 1 from below. All movement of this part of theupper frame 1 is carried out through the movement of thesliders 14 along thelower frame 2. However, in the extreme settings of the swivel joint (angles 0° and 90°) with the axis of rotation outside the central axis, through thewindows 15 into which thesliders 14 fall, under the influence of gravity resulting from the seat, the foams, the user and the assembly of elements itself, the swivel mechanism is blocked. - An "L"-shaped
linear rail 6 is attached by itslower surface 7 throughbolts 9 to theflat bottom frame 2. Similarly, therail 5 is a mirror image of therail 6. Theslider 10 is made in a larger tolerance around theinset 8 which allows the slack and thepin 11 attached to theslider 10 to establish a quasi-concentric position by aspherical selection 10a of theslider 10 against theinset 8 reducing friction during movement of thetop frame 1 relative to thebottom frame 2. Thepin 11 of theslider 10 is connected to thetop plate 1 by means of anut 18. In addition, in order to eliminate free spaces and friction between thepin 11 and thetop frame 1, a slidingsleeve 17 is used. The slidingsleeve 17 is axially aligned with thepin 11. Thesliders 10 fix one part of theupper frame 1, theinsets 13a determine the movement of the opposite part of theupper frame 1. Theinsets 13a move by means ofsliders 14 fixed to theinsets 13a by means ofscrews 9 along thebottom plate 2. The upward movement of theinsets 13a is limited by means ofguides insets 13a and theguides rubber dampers 16 are used. In order to lock the end positions (0° and 90° angles of the movement path), oval cut-outs 15 in thebottom frame 2 are used. During the movement of thesliders 14 along thebottom frame 2 and when reaching the end position, thesliders 14 slide into the free space of thewindow 15 and remain there restrained by the raised plane of thebottom frame 2. The mechanism is locked in the end position until theupper frame 1 is mechanically positioned back on thesliders 14 on the plane of thelower frame 2. Thelower frame 2 is connected to the furniture bynuts 19, and theupper frame 1 is connected to the seat through holes 12.
Claims (4)
- A seat swivel mechanism for upholstered furniture consisting of a lower and an upper surface, consisting of a rectangular upper frame (1) and a lower frame (2), where to the rectangular upper frame (1), on two adjacent arms, on their lower surface, two sliders (10) are fixed, respectively one for each arm, while on the wider arms (2) of the lower frame (1) there are two curved guides (10), respectively, one for each arm,
characterized in that the sliders (10) along their entire length have longitudinal ball-shaped cavities (10a) at their bottom and on one of the other arms of the upper frame (1) there is a rectangular inset (13) in the plane of the upper frame (1), to the lower surface of which the insets (13a) with sliders (14) are mounted, wherein the lower frame (2) has five arms and has two wider arms perpendicular to each other and two narrower arms positioned at an acute angle to each other, connected by a fifth arm and on the arms positioned towards each other at acute angles there are linear guides (5) and (6) of L-shaped cross-section with longitudinal insets (8) of circular profile fixed on their upper surfaces, and in that in addition on the wider arms of the lower frame (2) there are two rectangular windows (15), respectively, one for each arm. - Mechanism according to claim 1, characterized in that a pin (11) is attached to the slider (10) of the upper frame (1).
- Mechanism according to claim 2, characterized in that between the pin (11) and the upper frame (1) there is a sliding sleeve (17) aligned axially with the pin (11).
- Mechanism according to claims 2 or 3, characterized in that between the insets (13a) of the upper frame (1) and the curved guides (3) and (4) of the lower frame (2) there are rubber dampers (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL436988A PL241872B1 (en) | 2021-02-13 | 2021-02-13 | Swivel mechanism of the seat of upholstered furniture |
PCT/PL2021/000067 WO2022173318A1 (en) | 2021-02-13 | 2021-09-14 | Seat swivel mechanism for upholstered furniture |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4061182A1 EP4061182A1 (en) | 2022-09-28 |
EP4061182B1 true EP4061182B1 (en) | 2023-08-30 |
Family
ID=78414701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21799359.1A Active EP4061182B1 (en) | 2021-02-13 | 2021-09-14 | Seat swivel mechanism for upholstered furniture |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4061182B1 (en) |
PL (1) | PL241872B1 (en) |
WO (1) | WO2022173318A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5915716Y2 (en) * | 1980-01-21 | 1984-05-09 | 日産車体株式会社 | Rotation support device in vehicle direction change seat device |
JP2000050996A (en) | 1998-06-01 | 2000-02-22 | Yoshinobu Yamashita | Chair and turntable therefor |
JP2009142364A (en) | 2007-12-12 | 2009-07-02 | Kisaku Kobo:Kk | Rotary chair |
CN201333952Y (en) * | 2009-01-14 | 2009-10-28 | 上海李尔汽车系统有限公司 | Rotation structure of rotary seat |
FR3069203B1 (en) * | 2017-07-24 | 2019-10-04 | Faurecia Sieges D'automobile | PIVOTING VEHICLE SEAT |
-
2021
- 2021-02-13 PL PL436988A patent/PL241872B1/en unknown
- 2021-09-14 EP EP21799359.1A patent/EP4061182B1/en active Active
- 2021-09-14 WO PCT/PL2021/000067 patent/WO2022173318A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL436988A1 (en) | 2022-08-16 |
WO2022173318A1 (en) | 2022-08-18 |
EP4061182A1 (en) | 2022-09-28 |
PL241872B1 (en) | 2022-12-19 |
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