WO2023089219A1 - Dispositif d'inclinaison pour dossier - Google Patents

Dispositif d'inclinaison pour dossier Download PDF

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Publication number
WO2023089219A1
WO2023089219A1 PCT/ES2022/070744 ES2022070744W WO2023089219A1 WO 2023089219 A1 WO2023089219 A1 WO 2023089219A1 ES 2022070744 W ES2022070744 W ES 2022070744W WO 2023089219 A1 WO2023089219 A1 WO 2023089219A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
tilting device
backrest according
backrest
seat
Prior art date
Application number
PCT/ES2022/070744
Other languages
English (en)
Spanish (es)
Inventor
Rafael Blasco Andreu
Original Assignee
Rafael Blasco Andreu
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rafael Blasco Andreu filed Critical Rafael Blasco Andreu
Priority to DE212022000299.7U priority Critical patent/DE212022000299U1/de
Publication of WO2023089219A1 publication Critical patent/WO2023089219A1/fr

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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
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Definitions

  • the invention refers to a tilting device for use as a backrest, arranged on a seat, which offers adequate lumbar support and contributes to positioning the pelvis and maintaining an upright posture of the spine, avoiding loads. over the area of the lumbar vertebrae.
  • Said device adapts to any type of seat, sofa, chair, vehicle seats, etc., even as an independent backrest.
  • the technical sector to which it belongs is furniture accessories including those for medical or orthopedic use.
  • the applicant's own utility model U201631384 which refers to a self-adjusting backrest device that complements a seat surface that includes a mobile plate, two sets of bushings joined by a horizontal axis where the first set of bushings is attached to the Mobile plate and the other set of bushings is attached to a support, with at least one of the bushings adjustable in height.
  • Document US2005035636A1 discloses a chair of the type that includes seat and backrest joined together, which is self-adjusting, characterized in that it comprises a backrest formed by a back support plate, supported by a horizontal axis joint arranged on a support while said articulation at a certain distance from the base of the backrest, preferably in an area a medium height of the backrest and presents a cushioned rotation spring limited by a rotation stop system and in whose rest position the iron is in an approximately vertical position.
  • the plate, the support and the articulation are included in a semi-rigid case.
  • Patent US6435615 refers to a chair that has a pivoting backrest where said backrest is supported by a joint with a horizontal axis.
  • US10799028 patent refers to a chair that includes a support backrest where the seat is attached to the backrest that has a flexible support through which the backrest can be moved.
  • the invention refers to a tilting backrest device, arranged on a seat, either attached to the body of a chair, replacing its backrest or complementing the pre-existing backrest of a chair, where its adaptability has as The objective is to redirect the pelvis and, at the same time, correctly position the spine, avoiding direct pressure on the lumbar vertebrae.
  • the device comprises:
  • a first plate which we will call plate B, where one of its faces, the front, interacts with the user and accompanies the movement of his back.
  • This plate B comprises an upper zone and a lower zone.
  • a second plate which we will call plate C, which is either incorporated into the back of a chair or replaces it.
  • Plate B and C face each other and are joined through an articulated joint that includes a horizontal axis that connects both plates.
  • Plate B specifically its lower area, acts on the user's pelvis, pushing it and conditioning its position, avoiding a hunched posture.
  • This plate B has dimensions between 11.5 cm and 17.5 cm high, preferably 14.5 cm. and it is arranged at the level of the area of the lumbar vertebrae.
  • the plate B can have a width of 20 cm.
  • the device includes a third plate, which we will call plate A.
  • This plate A is arranged on the front face of plate B, understanding as such the face of plate B opposite to that facing plate C.
  • the plate A can have a width between 20 cm and 30 cm and a length between 40 cm and 45 cm.
  • the measurements of the plate A are 20 cm wide by 40 cm high.
  • the articulated connection between the plates B and C allows the pivoting of the plate B with respect to the plate C on the horizontal axis.
  • the horizontal axis which divides the plate B into the upper and lower zone, is located at a height of between 18 cm and 24 cm from the seat, preferably 21 cm.
  • the articulated joint which can comprise a hinge with an axis, is arranged on a thickness complement, with dimensions suitable to support the articulated joint, where the axis is arranged on the upper edge of said thickness complement.
  • the lower edge of the plate B is located at a distance of between 13 cm and 15 cm from the seat, preferably 14 cm.
  • the total thickness of the set formed by plate B, plate C and the distance between them, measured at the axis point, the only point where the distance between them is constant, is preferably less than 2.7 cm since a greater full thickness can cause discomfort and round the back.
  • the distance between planks B and C at the point of the y-axis without including the thicknesses of planks B and C is 1.7 cm.
  • the axis, which divides the plate B into an upper and a lower zone, is arranged at a distance of between 5.8 cm and 10.8 cm from the upper edge of the plate B, preferably at 7.8 cm.
  • the location of the axis determines the forces since the push force that is applied on the upper area of the pancha B is directly proportional to the recoil force of the lower area of the plate B that pushes the user's pelvis and where it is located. relationship of forces generates an adequate straightening of the spine.
  • the tilting of plate B on the axis and the distance from the seat facilitate the positioning of the pelvis and the dimensions of this plate B contribute to properly positioning the spine, achieving an upright posture and avoiding additional loads on other points of it.
  • the plate A is made of a flexible material.
  • the device as a whole is placed inside a spongy material sheath.
  • This cover presents a "U" section with its closed lateral ends.
  • the front wall of this sleeve is preferably flush with the top edge of plate A and if there is no plate A, with the top edge of plate B.
  • the rear wall of the cover is preferably flush with the upper edge of the plate C, although this rear wall, in another possible execution, may have other measurements, such as, for example, being equal to the height of the front wall.
  • the flexible plate A which acts on the user's back, can have a total or partial covering of spongy material, understood as any material that, because it is soft, provides comfort.
  • plates A and B have a covering, either rigid or soft, which prevents the user from seeing or coming into contact with the internal elements with which there is a risk of injury or discomfort.
  • plate B has a spongy material coating on its front face for greater user comfort.
  • plate B is made of a rigid material. In another possible execution, plate B is made of a semi-rigid material.
  • the front part of the device that comes into contact with the user's back has a soft or spongy coating or is flexible enough to provide comfort.
  • FIG. 1 Shows a possible execution of the exploded device where a sheath (1) can be seen that houses the device as a whole, a flexible plate A (2) which accompanies the movement of the user's back, a plate B (3) which is attached to plate A (2), a complement of thickness (5) suitable to support the articulated joint (4), which in this case is shown as a hinge that houses an axis (7) and, a plate C (6) acting as a backup for the device.
  • a sheath (1) houses the device as a whole, a flexible plate A (2) which accompanies the movement of the user's back, a plate B (3) which is attached to plate A (2), a complement of thickness (5) suitable to support the articulated joint (4), which in this case is shown as a hinge that houses an axis (7) and, a plate C (6) acting as a backup for the device.
  • Figure 2 Shows a side view of the device at rest, in a possible execution, where the arrangement of the flexible plate A (2) attached to plate B (3) and the articulated joint (4) arranged on the complement of thickness (5) attached to plate C (6) where plate B communicates with plate C by means of said articulated joint (4).
  • Figure 3 Shows a side view of the device in use, in a possible execution, where the flexible plate A comes into contact with the user's back, appreciating the force that is applied to the upper part of the plate B and the thrust generated by the lower part of it towards the area of the lumbar vertebrae.
  • the invention refers to a tilting backrest device for use together with a seat, either together with an already existing backrest or constituting the backrest itself, where this device has a tilting part in such a way that the pushing force itself the user exerts on one part of the device when leaning, generates a recoil force in another part of the device that pushes the pelvis and helps to position the spine.
  • the device comprises: An iron A (2) on whose front face the user acts and which accompanies the movement of the back.
  • a horizontal axis (7) arranged in an articulated joint (4) between plate B and a plate C on which the assembly formed by plate A (2) and plate B (3) pivots with respect to that plate C.
  • Plate C (6) that is incorporated into the back of a chair and supports the articulated joint (4) that supports the axis (7).
  • the horizontal axis (7) divides plate B (3) into an upper zone and a lower zone in such a way that when a forward force is applied to the upper zone of plate B, a backward movement of the lower zone of plate B with a recoil force directly proportional to the advance force.
  • recoil force the force, directed towards the user and that causes the movement, towards the user's pelvis, of the lower part of the plate B.
  • An articulated joint between plate B and plate C suitable to enable a pivoting movement on a horizontal axis arranged between plate B and C.
  • the lower area of the plate B (3) driven by this recoil force acts on the user's pelvis and determines its position, thus avoiding a hunched back posture.
  • Plate B has dimensions whose height is 14.5 cm. and the width of 20 cm.
  • Plate A (2) has a width of 20 cm. and a height of 40 cm.
  • the articulated joint (4) which in this execution includes a hinge with an axis, joins the plate B (3) with the plate C (6) and the axis (7) allows the pivoting of the plate B (3) with respect to plate C (6).
  • the axis (7) is located at a height of 21 cm. from the seat.
  • the articulated joint (4) is arranged on a thick complement (5) where the axis (7) is arranged on the upper edge of said complement, facilitating the pivoting of plate B (3) with respect to plate C (6). .
  • the distance between plate B (3) and plate C (6) at the point where the axis is located is 1.7 cm. The distance is measured at that point as the only point where the distance between one and the other is constant.
  • the total thickness of the set formed by plate B (3), plate C (6) and the distance between them, taken at the point where the axis is, is 2.7 cm. which enables the proper tilting of plate B (3) with respect to plate C (6).
  • the distance between the lower edge of the plate B (3) and the seat is 14 cm.
  • the axis (7) is located at a distance of 7.8 cm from the upper edge of plate B (3).
  • the location of the axis (7) on the plate B (3) is determined to establish a compensation of forces in certain points of the user's back in such a way that when a pushing force is applied on the upper part of the plate B (3 ), either directly or through plate A, the tilting of plate B on the axis generates a backward movement, that is to say in the opposite direction, of the lower area of plate B that can be transmitted to plate A if there is one .
  • This backward movement with a force proportional to the pushing force acts on the user's pelvis and positions it, also conditioning the posture of the vertebral column, which thus remains upright.
  • the plate B (3) have the adequate dimensions established previously, with the adequate distance between its lower edge and the seat and the adequate separation distance between plate B (2) and plate C (6) at the point where the axis (7) pivots.
  • the plate A (2) is made of a flexible material.
  • Plate B (3) is made of a semi-rigid material
  • the device is inserted into a sheath (1) that has a "U" section with its closed ends.
  • the free side of the front wall of the cover is flush with the upper edge of plate A (2) and the free side of the rear wall is flush with the upper edge of plate C (6).

Landscapes

  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

Dispositif d'inclinaison pour dossier utilisable sur un siège pour faciliter la bonne posture du bassin et de la colonne vertébrale de l'utilisateur, comprenant une plaque B et une plaque C reliées par une articulation comprenant un axe de pivot divisant la plaque C en une zone supérieure et une zone inférieure de telle sorte qu'une force avant appliquée à la zone supérieure de la plaque B provoque un mouvement vers l'arrière dans la zone inférieure de la plaque B, la force vers l'arrière étant directement proportionnelle à la force vers l'avant, et où le mouvement vers l'arrière de la plaque B est directement proportionnel au mouvement vers l'arrière de la plaque B. La force appliquée à la zone supérieure de la plaque B provoque un mouvement vers l'arrière dans la zone inférieure de la plaque B, la force vers l'arrière étant directement proportionnelle à la force vers l'avant, et où la partie inférieure de la plaque B (3) agit sur la zone pelvienne en la poussant vers l'avant et en positionnant la colonne vertébrale.
PCT/ES2022/070744 2021-11-18 2022-11-17 Dispositif d'inclinaison pour dossier WO2023089219A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212022000299.7U DE212022000299U1 (de) 2021-11-18 2022-11-17 Kippvorrichtung für eine Rückenlehne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESU202132300 2021-11-18
ES202132300U ES1288684Y (es) 2021-11-18 2021-11-18 Dispositivo de basculacion para respaldo

Publications (1)

Publication Number Publication Date
WO2023089219A1 true WO2023089219A1 (fr) 2023-05-25

Family

ID=80912313

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2022/070744 WO2023089219A1 (fr) 2021-11-18 2022-11-17 Dispositif d'inclinaison pour dossier

Country Status (3)

Country Link
DE (1) DE212022000299U1 (fr)
ES (1) ES1288684Y (fr)
WO (1) WO2023089219A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912125U1 (de) * 1989-10-11 1990-02-01 Wendlinger, Josef, 8221 Surberg Sitzmöbel, insbesondere Stuhl
US20060054397A1 (en) * 2004-09-14 2006-03-16 Pringnitz Todd A Tree stand with back support
JP2008119217A (ja) * 2006-11-10 2008-05-29 Toyo Kogei:Kk 椅子
RS20090017A (en) * 2009-01-20 2010-12-31 Radmilo Erić Combined self adjusting backrest
US20130113254A1 (en) * 2010-06-15 2013-05-09 Betty A. Augustat Ergometric Chair Apparatus
ES1172762U (es) * 2016-11-21 2016-12-22 Rafael BLASCO ANDREU Dispositivo de respaldo autoajustable mejorado
US10709929B1 (en) * 2012-12-05 2020-07-14 Joel H. Eisenberg Seating

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910760A (en) 1928-10-15 1933-05-23 Fritz Cross Company Chair
US2692012A (en) 1946-03-29 1954-10-19 Cramer Posture Chair Co Inc Adjustable chair back pivoted above seat
US6435615B1 (en) 2000-08-08 2002-08-20 Otto Zapf Seating furniture with downwardly movable, pivoting backrest
US6974188B2 (en) 2003-08-13 2005-12-13 Cosco Management, Inc. Chair with pivotable chair back
US10799028B2 (en) 2017-08-10 2020-10-13 NHI Corporation Chairs including flexible frames

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912125U1 (de) * 1989-10-11 1990-02-01 Wendlinger, Josef, 8221 Surberg Sitzmöbel, insbesondere Stuhl
US20060054397A1 (en) * 2004-09-14 2006-03-16 Pringnitz Todd A Tree stand with back support
JP2008119217A (ja) * 2006-11-10 2008-05-29 Toyo Kogei:Kk 椅子
RS20090017A (en) * 2009-01-20 2010-12-31 Radmilo Erić Combined self adjusting backrest
US20130113254A1 (en) * 2010-06-15 2013-05-09 Betty A. Augustat Ergometric Chair Apparatus
US10709929B1 (en) * 2012-12-05 2020-07-14 Joel H. Eisenberg Seating
ES1172762U (es) * 2016-11-21 2016-12-22 Rafael BLASCO ANDREU Dispositivo de respaldo autoajustable mejorado

Also Published As

Publication number Publication date
ES1288684Y (es) 2022-06-22
ES1288684U (es) 2022-04-01
DE212022000299U1 (de) 2024-06-13

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