WO2023089219A1 - Backrest tilting device - Google Patents

Backrest tilting device 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
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WO
WIPO (PCT)
Prior art keywords
plate
tilting device
backrest according
backrest
seat
Prior art date
Application number
PCT/ES2022/070744
Other languages
Spanish (es)
French (fr)
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
Publication of WO2023089219A1 publication Critical patent/WO2023089219A1/en

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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
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • 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

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).

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

The present invention relates to a backrest tilting device suitable for being arranged on a seat and facilitating the proper posture of the user's pelvis and spine. Said device comprises a plate B and a plate C joined together by an articulated joint that comprises a pivot axis which divides the plate C into an upper area and a lower area in such a way that a forward force applied on the upper area of the plate B causes the lower area of the plate B to move backwards, the backward force being directly proportional to the forward force and wherein the lower portion of the plate B (3) acts on the pelvic region by pushing it forward and positioning the spine.

Description

DESCRIPCIÓN DESCRIPTION
DISPOSITIVO DE BASCULACIÓN PARA RESPALDO TILTING DEVICE FOR BACKREST
Tal como su nombre lo indica, la invención se refiere a un dispositivo de basculación para su uso como respaldo, dispuesto sobre un asiento, que ofrece un adecuado soporte lumbar y contribuye a posicionar la pelvis y mantener una postura erguida de la columna evitando las cargas sobre la zona de las vertebras lumbares. As its name indicates, 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.
Dicho dispositivo se adapta a cualquier tipo de asiento, sofá, silla, asientos de vehículos etc, incluso como respaldo independiente. Said device adapts to any type of seat, sofa, chair, vehicle seats, etc., even as an independent backrest.
El sector de la técnica al que pertenece es el de complementos para muebles incluidos los de uso médico u ortopédico. The technical sector to which it belongs is furniture accessories including those for medical or orthopedic use.
ANTECEDENTES BACKGROUND
En el estado del arte existen gran variedad de asientos orientados a adaptarse a las características estándar posicionales del usuario. In the state of the art there is a wide variety of seats designed to adapt to the standard positional characteristics of the user.
Como ejemplo, citamos a continuación vahas patentes que lo acreditan. As an example, we cite below several patents that accredit it.
El propio modelo de utilidad del solicitante U201631384 el cual se refiere a un dispositivo de respaldo autoajustable que complementa a una superficie de asiento que comprende una plancha móvil, dos juegos de bujes unidos por un eje horizontal donde el primer juego de bujes va unido a la plancha móvil y el otro juego de bujes esta unido a una apoyo siendo al menos uno de los bujes regulable en altura. 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.
La patente americana US2692012A se refiere a un respaldo y asiento unidos entre sí, donde el respaldo es flotante y donde el asiento cuenta con medios para soportar elásticamente dicho respaldo gracias a un soporte unido al asiento el cual permite el movimiento o inclinación corporal. American patent US2692012A refers to a backrest and seat joined together, where the backrest is floating and where the seat has means to elastically support said backrest thanks to a support attached to the seat which allows movement or body inclination.
La patente US1910760 sillas que tienen respaldos con ajuste vertical y horizontal, y tiene por objeto proporcionar un bloqueo y, medios por los cuales el respaldo puede bloquearse simultáneamente en su ajuste horizontal y vertical. The patent US1910760 chairs that have backrests with vertical and horizontal adjustment, and is intended to provide a lock and means by which the backrest can be simultaneously locked in its horizontal and vertical adjustment.
El documento US2005035636A1 divulga una silla del tipo de las que comprende asiento y respaldo unidos entre sí, que es autoajustable caracterizado por que comprende un respaldo formado por una plancha de apoyo de la espalda, soportada por una articulación de eje horizontal dispuesta en un soporte estando dicha articulación a cierta distancia de la base del respaldo, preferiblemente en una zona a una altura media del respaldo y presenta un resorte de giro amortiguado y limitado por un sistema de tope de giro y en cuya posición de reposo la plancha se encuentra en posición aproximadamente vertical. La plancha, el soporte y la articulación están incluidos en una carcasa semirrígida. 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.
La patente US6435615 se refiere a una silla que cuenta con un respaldo pivotante donde dicho respaldo esta soportado por una articulación con eje horizontal. Patent US6435615 refers to a chair that has a pivoting backrest where said backrest is supported by a joint with a horizontal axis.
La patente US10799028 se refiere a una silla que incluye un respaldo de apoyo donde el asiento está acoplado al respaldo que cuenta con un soporte flexible por el que se puede desplazar el respaldo. 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.
Los respaldos de las sillas convencionales suelen tener cierta dependencia hacia la forma o curvatura de la espalda donde se aprecia su disposición a tener una curva en su superficie que se amolda a dicha curvatura generando una presión constante sobre toda la zona de las vertebras lumbares. The backs of conventional chairs tend to have a certain dependence on the shape or curvature of the back, where its willingness to have a curve on its surface that conforms to said curvature is appreciated, generating constant pressure on the entire area of the lumbar vertebrae.
La mayoría de las anteriores patentes citadas no comprenden elementos que puedan indicar que los respaldos puedan llegar a ser independientes del conjunto de la silla.Most of the aforementioned patents do not include elements that could indicate that the backrests can become independent of the chair as a whole.
DESCRIPCIÓN DE LA INVENCIÓN DESCRIPTION OF THE INVENTION
Para solventar los problemas anteriormente descritos, la invención se refiere a un dispositivo basculante de respaldo, dispuesto sobre un asiento, ya sea unido al cuerpo de una silla sustituyendo su respaldo o complementando al respaldo preexistente de una silla, donde su capacidad de adaptación tiene como objetivo reconducir la pelvis y paralelamente posicionar correctamente la columna vertebral evitando que exista presión directa sobre las vertebras lumbares. In order to solve the problems described above, 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.
Llamaremos silla a cualquier objeto que comprenda un asiento ya sea, sofá, sillón, butaca, taburete o cualquier otro. We will call any object that includes a seat a chair, be it a sofa, armchair, armchair, stool or any other.
El dispositivo comprende: The device comprises:
Una primera plancha, a la que llamaremos plancha B, donde una de sus caras, la frontal, interactúa con el usuario y acompaña el movimiento de su espalda. Esta plancha B comprende una zona superior y una zona inferior. 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.
Una segunda plancha, a la que llamaremos plancha C que, o bien se incorpora al respaldo de una silla o lo sustituye. A second plate, which we will call plate C, which is either incorporated into the back of a chair or replaces it.
La plancha B y C se encuentran encaradas y unidas a través de una unión articulada que comprende un eje horizontal que relaciona ambas planchas. La plancha B, en concreto su zona inferior, actúa sobre la pelvis del usuario, empujándola y condicionando su posición evitando una postura encorvada. Esta plancha B tiene unas dimensiones de entre 11,5 cm y 17,5 cm de alto, preferiblemente de 14,5 cm. y se dispone a la altura de la zona de las vertebras lumbares. 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.
En una posible ejecución la plancha B puede presentar un ancho de 20 cm. In a possible execution, the plate B can have a width of 20 cm.
Opcionalmente el dispositivo comprende una tercera plancha, a la que llamaremos plancha A. Esta plancha A se dispone sobre la cara frontal de la plancha B entendiendo como tal la cara de la plancha B opuesta a la encarada a la plancha C.Optionally, 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.
La plancha A puede presentar un ancho de entre 20 cm y 30 cm y un largo comprendido entre 40 cm y 45 cm. The plate A can have a width between 20 cm and 30 cm and a length between 40 cm and 45 cm.
En una ejecución preferente las medidas de la plancha A son 20 cm de ancho por 40 cm de alto. In a preferred execution, the measurements of the plate A are 20 cm wide by 40 cm high.
La unión articulada entre las planchas B y C permite el pivotaje de la plancha B con respecto a la plancha C sobre el eje horizontal. 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.
El eje horizontal, que divide la plancha B en la zona superior e inferior, se encuentra a una altura de entre 18 cm y 24 cm desde el asiento, preferiblemente a 21 cm. 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.
En una ejecución preferente, la unión articulada, que puede comprender una bisagra con un eje, está dispuesta sobre un complemento de grosor, con unas dimensiones aptas para soportar la unión articulada, donde el eje queda dispuesto en el borde superior de dicho complemento de grosor facilitando la basculación de la plancha B con respecto a la plancha C al ampliarse la distancia entre ellas In a preferred embodiment, 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. facilitating the tilting of plate B with respect to plate C by expanding the distance between them
El borde inferior de la plancha B se encuentra a una distancia de entre 13 cm y 15 cm del asiento, de manera preferente a 14 cm. 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.
El grosor total del conjunto formado por la plancha B, la plancha C y la distancia entre ellas, medido en el punto del eje, único punto en donde la distancia entre ambas es constante, es preferiblemente menor a 2,7 cm ya que un mayor grosor total puede provocar incomodidad y curvar la espalda. 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.
En una ejecución preferente, la distancia entre la plancha B y C en el punto del eje y sin incluir los grosores de las planchas B y C es de 1 ,7 cm. El eje, que divide a la plancha B en una zona superior y otra inferior, se dispone a una distancia de entre 5,8 cm y 10,8 cm desde el borde superior de la plancha B, preferentemente a 7,8 cm. In a preferred embodiment, 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.
La ubicación del eje condiciona las fuerzas ya que la fuerza de empuje que se aplica sobre la zona superior de la pancha B es directamente proporcional a la fuerza de retroceso de la zona inferior de la plancha B que empuja la pelvis del usuario y en donde esta relación de fuerzas genera un adecuado enderezamiento de la columna.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.
La basculación de la plancha B sobre el eje y la distancia respecto al asiento facilitan el posicionado de la pelvis y las dimensiones de esa plancha B contribuyen a posicionar adecuadamente la columna logrando una postura erguida y evitando cargas adicionales sobre otros puntos de la misma. 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.
En una ejecución preferente, la plancha A esta realizada en una material flexible. In a preferred embodiment, the plate A is made of a flexible material.
En una ejecución preferente, el conjunto del dispositivo se dispone dentro de una funda de material esponjoso. In a preferred embodiment, the device as a whole is placed inside a spongy material sheath.
Esta funda presenta una sección de “U” con sus extremos laterales cerrados. This cover presents a "U" section with its closed lateral ends.
La pared frontal de esta funda queda preferiblemente enrasada con el borde superior de la plancha A y si no hubiera plancha A, con el borde superior de la plancha B. 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.
La pared trasera de la funda queda preferiblemente enrasada con el borde superior de la plancha C si bien esta pared trasera, en otra ejecución posible, puede presentar otras medidas como, por ejemplo, igualarse a la altura de la pared frontal. 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.
En una ejecución preferente la plancha A flexible, que actúa sobre la espalda del usuario, puede tener un recubrimiento total o parcial de material esponjoso, entendiéndose como tal cualquier material que, por ser mullido, proporcione comodidad. In a preferred embodiment, 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.
En una posible ejecución sólo las planchas A y B cuentan con un cubrimiento, bien sea rígido o blando, que evita que el usuario pueda llegar a ver ó entrar en contacto con los elementos internos con los cuales exista riesgo de lesiones o incomodidad. In one possible execution, only 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.
En otra posible ejecución, donde no existe plancha A, la plancha B cuenta con recubrimiento de material esponjoso en su cara frontal para mayor comodidad del usuario. In another possible execution, where there is no plate A, plate B has a spongy material coating on its front face for greater user comfort.
En una posible ejecución la plancha B esta realizada en un material rígido. En otra posible ejecución la plancha B esta realizada en un material semi-rígido. In a possible execution, plate B is made of a rigid material. In another possible execution, plate B is made of a semi-rigid material.
En cualquier caso, la parte frontal del dispositivo que entra en contacto con la espalda del usuario presenta un recubrimiento mullido o esponjoso o ser lo suficientemente flexible para dar comodidad. In any case, 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.
DESCRIPCIÓN DE LAS FIGURAS DESCRIPTION OF THE FIGURES
Figura 1. Muestra una posible ejecución del dispositivo en explosión donde se aprecia una funda (1) que alberga al conjunto del dispositivo, una plancha A (2) flexible la cual acompaña el movimiento de la espalda del usuario, una plancha B (3) que va unida a la plancha A (2), un complemento de grosor (5) adecuado para soportar la unión articulada (4), que en este caso se muestra como una bisagra que aloja a un eje (7) y, una plancha C (6) que actúa como respaldo del dispositivo. Figure 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.
Figura 2. Muestra una vista lateral del dispositivo en reposo, en una posible ejecución, donde se aprecia la disposición de la plancha A (2) flexible unida a la plancha B (3) y la unión articulada (4) dispuesta sobre el complemento de grosor (5) unido a la plancha C (6) donde se comunican la plancha B con la plancha C por medio de dicha unión articulada (4). 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).
Figura 3. Muestra una vista lateral del dispositivo en uso, en una posible ejecución, donde la plancha A flexible entra en contacto con la espalda del usuario apreciándose la fuerza que se aplica sobre la parte superior de la plancha B y el empuje que genera la parte inferior de la misma hacia la zona de las vertebras lumbares. 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.
DESCRIPCIÓN DE UN MODO DE LLEVAR A CABO LA INVENCIÓN DESCRIPTION OF A MODE OF CARRYING OUT THE INVENTION
Se describe a continuación una forma de llevar a cabo la invención que nos es limitativa sino meramente explicativa. A way of carrying out the invention that is not limiting but merely explanatory is described below.
La invención se refiere a un dispositivo basculante de respaldo para su uso junto con un asiento, ya sea junto con un respaldo ya existente o constituyendo el respaldo propiamente dicho, donde este dispositivo presenta una parte basculante de tal forma que la propia fuerza de empuje que el usuario ejerce sobre una parte del dispositivo al apoyarse, genera una fuerza de retroceso en otra parte del dispositivo que empuja la pelvis y contribuye a posicionar la columna vertebral. 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.
El dispositivo comprende: Una plancha A (2) sobre cuya cara frontal actúa el usuario y que acompaña el movimiento de la espalda. The device comprises: An iron A (2) on whose front face the user acts and which accompanies the movement of the back.
Una plancha B (3) unida a la cara posterior de la plancha A (2) A plate B (3) attached to the back face of plate A (2)
Un eje horizontal (7) dispuesto en una unión articulada (4) entre la plancha B y una plancha C sobre el que pivota, respecto de esa plancha C, el conjunto formado por la plancha A (2) y plancha B (3). 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.
La plancha C (6) que se incorpora al respaldo de una silla y da soporte a la unión articulada (4) que soporta al eje (7). Plate C (6) that is incorporated into the back of a chair and supports the articulated joint (4) that supports the axis (7).
El eje horizontal (7) divide la plancha B (3) en una zona superior y una zona inferior de tal forma que al aplicarse una fuerza de avance en la zona superior de la plancha B se provoca un movimiento de retroceso de la zona inferior de la plancha B con una fuerza de retroceso directamente proporcional a la fuerza de avance. 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.
Llamaremos fuerza de avance a la fuerza aplicada en dirección al respaldo y que provoca el movimiento de la parte superior de la plancha B hacia el respaldo. We will call forward force the force applied in the direction of the backrest and that causes the movement of the upper part of the plate B towards the backrest.
Llamaremos fuerza de retroceso a la fuerza, dirigida hacia el usuario y que provoca el movimiento, hacia la pelvis del usuario, de la parte inferior de la plancha B. We will call the 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.
Una unión articulada entre la plancha B y la plancha C adecuada para posibilitar un movimiento de pivotaje sobre un eje horizontal dispuesto entre la plancha B y la C.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.
La zona inferior de la plancha B (3) impulsada por esa fuerza de retroceso actúa sobre la pelvis del usuario y condiciona su posición, evitando de ese modo una postura encorvada de la espalda. 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.
La plancha B presenta unas dimensiones cuya altura es de 14,5 cm. y el ancho de 20 cm. Plate B has dimensions whose height is 14.5 cm. and the width of 20 cm.
La plancha A (2) presenta un ancho de 20 cm. y una altura de 40 cm. Plate A (2) has a width of 20 cm. and a height of 40 cm.
La unión articulada (4), que en esta ejecución comprende una bisagra con eje, une la plancha B (3) con la plancha C (6) y el eje (7) permite el pivotaje de la plancha B (3) con respecto a la plancha C (6). 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).
El eje (7) se ubica a una altura de 21 cm. desde el asiento. The axis (7) is located at a height of 21 cm. from the seat.
La unión articulada (4) se dispone sobre un complemento de grosor (5) donde el eje (7) queda dispuesto en el borde superior de dicho complemento facilitando el pivotaje de la plancha B (3) con respecto a la plancha C (6). La distancia entre la plancha B (3) y la plancha C (6) en el punto donde se encuentra el eje es de 1 ,7 cm. La distancia se mide en ese punto pues el único punto donde la distancia entre una y otra es constante. 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.
El grosor total del conjunto formado por la plancha B (3), la plancha C (6) y la distancia entre ellas, tomada en el punto donde se encuentra el eje, es de 2,7 cm. lo que posibilita la adecuada basculación de la plancha B (3) con respecto a la plancha C (6).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).
La distancia entre el borde inferior de la plancha B (3) y el asiento es de 14 cm. The distance between the lower edge of the plate B (3) and the seat is 14 cm.
El eje (7) se localiza a una distancia de 7,8 cm desde el borde superior de la plancha B (3). The axis (7) is located at a distance of 7.8 cm from the upper edge of plate B (3).
La ubicación del eje (7) sobre la plancha B (3) se determina para establecer una compensación de fuerzas en determinados puntos de la espalda del usuario de tal modo que al aplicarse una fuerza de empuje sobre la parte superior de la plancha B (3), bien directamente o a través de la plancha A, la basculación de la plancha B sobre el eje genera un movimiento de retroceso, es decir en sentido contrario, de la zona inferior de la plancha B que puede transmitirse a la plancha A si la hay. 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 .
Este movimiento de retroceso con una fuerza proporcional a la fuerza de empuje, actúa sobre la pelvis del usuario y la posiciona, condicionando también la postura de la columna vertebral que de ese modo queda erguida. 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.
Por lo tanto para conseguir una adecuada posición de la pelvis y una postura erguida de la espalda se requiere que la plancha B (3) cuente con las dimensiones adecuadas establecidas anteriormente, con la adecuada distancia entre el borde inferior de la misma y el asiento y la adecuada distancia de separación entre la plancha B (2) y la plancha C (6) en el punto donde pivota el eje (7). Therefore, to achieve an adequate position of the pelvis and an upright posture of the back, it is required that 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.
La plancha A (2) viene realizada en un material flexible. The plate A (2) is made of a flexible material.
La plancha B (3) está realizada en un material semi-rígido Plate B (3) is made of a semi-rigid material
Para mayor comodidad y practicidad el dispositivo se introduce en una funda (1) que presenta sección en “U” con sus extremos cerrados. For greater comfort and practicality, the device is inserted into a sheath (1) that has a "U" section with its closed ends.
La pared frontal de la funda queda enrasada por su lado libre con el borde superior de la plancha A (2) y el lado libre de la pared trasera queda enrasado con el borde superior de la plancha C (6). 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).

Claims

8 REIVINDICACIONES 8 CLAIMS
1. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO adecuado para disponerse sobre un asiento y facilitar la adecuada postura de la pelvis y la columna del usuario caracterizado porque comprende: 1. TILTING DEVICE FOR BACK BACK suitable to be placed on a seat and facilitate the proper posture of the user's pelvis and spine, characterized in that it comprises:
Una plancha B (3) de dimensiones entre 11 ,5 cm y 17,5 cm de altura. A plate B (3) with dimensions between 11.5 cm and 17.5 cm in height.
Una plancha C (6). A plate C (6).
Una unión articulada (4) entre la plancha B (3) y la plancha C (6) adecuada para posibilitar un movimiento de pivotaje sobre un eje (7) horizontal dispuesto entre la plancha B (3) y la C (6). An articulated joint (4) between plate B (3) and plate C (6) suitable to enable a pivoting movement on a horizontal axis (7) arranged between plate B (3) and C (6).
El eje horizontal se dispone entre 5,8 cm y 10,8 cm desde el borde superior de la plancha B (3) y a una distancia de entre 18 cm y 24 cm desde el asiento.The horizontal axis is arranged between 5.8 cm and 10.8 cm from the upper edge of the plate B (3) and at a distance between 18 cm and 24 cm from the seat.
El eje horizontal divide la plancha B (3) en una zona superior y una zona inferior de tal forma que una fuerza de avance aplicada en la zona superior de la plancha B (3) provoca un movimiento de retroceso en la zona inferior de la plancha B (3) siendo la fuerza de retroceso directamente proporcional a la fuerza de avance. The horizontal axis divides plate B (3) into an upper zone and a lower zone in such a way that a forward force applied in the upper zone of plate B (3) causes a backward movement in the lower zone of the plate B (3) being the recoil force directly proportional to the advance force.
La parte inferior de la plancha B (3) actúa sobre la zona de la pelvis empujándola hacia adelante y posicionando la columna. The lower part of the plate B (3) acts on the pelvic area, pushing it forward and positioning the spine.
2. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 caracterizado por que además se incluye una plancha A (2) unida a la cara frontal de plancha B (3). 2. TILTING DEVICE FOR BACKREST according to claim 1, characterized in that it also includes a plate A (2) attached to the front face of plate B (3).
3. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 caracterizado por que la plancha B (3) presenta una altura de 14,5 cm. 3. TILTING DEVICE FOR BACKREST according to claim 1, characterized in that the plate B (3) has a height of 14.5 cm.
4. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 caracterizado por que la distancia desde el borde inferior de la plancha B (3) al asiento es de 14 cm. 4. TILTING DEVICE FOR BACKREST according to claim 1, characterized in that the distance from the lower edge of the plate B (3) to the seat is 14 cm.
5. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 caracterizado por que el eje (7) horizontal se encuentra a una altura de 21 cm desde el asiento. 5. TILTING DEVICE FOR BACKREST according to claim 1, characterized in that the horizontal axis (7) is at a height of 21 cm from the seat.
6. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 o 2 caracterizado por que el dispositivo de basculación se aloja en una funda (1) de material esponjoso. 6. TILTING DEVICE FOR BACKREST according to claim 1 or 2, characterized in that the tilting device is housed in a cover (1) made of spongy material.
7. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 6 caracterizado por que la funda (1) de espuma tiene sección de “U” con sus extremos cerrados. 9 DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 6 caracterizado por que la pared frontal interior de la funda (1) queda enrasada el borde superior de la plancha A (2) DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 6 caracterizado por que la pared trasera de la funda (1) queda enrasada con el borde superior de la plancha C (6). DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 o 2 caracterizado por que comprende un complemento de grosor (5). DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 1 o 2 caracterizado por que la parte frontal del dispositivo comprende un recubrimiento esponjoso o mullido. DISPOSITIVO DE BASCULACIÓN PARA RESPALDO conforme reivindicación 2 caracterizado por que la plancha A (2) es flexible. 7. TILTING DEVICE FOR BACKREST according to claim 6, characterized in that the foam cover (1) has a "U" section with its closed ends. 9 TILTING DEVICE FOR BACKREST according to claim 6, characterized in that the inner front wall of the cover (1) is flush with the upper edge of the plate A (2) TILTING DEVICE FOR BACKREST according to claim 6, characterized in that the rear wall of the cover (1) is flush with the upper edge of plate C (6). TILTING DEVICE FOR BACKREST according to claim 1 or 2, characterized in that it comprises a thickness complement (5). TILTING DEVICE FOR BACKREST according to claim 1 or 2, characterized in that the front part of the device comprises a spongy or soft covering. TILTING DEVICE FOR BACKREST according to claim 2, characterized in that the plate A (2) is flexible.
PCT/ES2022/070744 2021-11-18 2022-11-17 Backrest tilting device WO2023089219A1 (en)

Applications Claiming Priority (2)

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ESU202132300 2021-11-18
ES202132300U ES1288684Y (en) 2021-11-18 2021-11-18 TILT DEVICE FOR BACKREST

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912125U1 (en) * 1989-10-11 1990-02-01 Wendlinger, Josef, 8221 Surberg, De
US20060054397A1 (en) * 2004-09-14 2006-03-16 Pringnitz Todd A Tree stand with back support
JP2008119217A (en) * 2006-11-10 2008-05-29 Toyo Kogei:Kk Chair
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 (en) * 2016-11-21 2016-12-22 Rafael BLASCO ANDREU Improved auto-adjustable backrest device (Machine-translation by Google Translate, not legally binding)
US10709929B1 (en) * 2012-12-05 2020-07-14 Joel H. Eisenberg Seating

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8912125U1 (en) * 1989-10-11 1990-02-01 Wendlinger, Josef, 8221 Surberg, De
US20060054397A1 (en) * 2004-09-14 2006-03-16 Pringnitz Todd A Tree stand with back support
JP2008119217A (en) * 2006-11-10 2008-05-29 Toyo Kogei:Kk Chair
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 (en) * 2016-11-21 2016-12-22 Rafael BLASCO ANDREU Improved auto-adjustable backrest device (Machine-translation by Google Translate, not legally binding)

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ES1288684U (en) 2022-04-01

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