WO2010115742A1 - Coussin amortisseur de protection contre le coup du lapin - Google Patents

Coussin amortisseur de protection contre le coup du lapin Download PDF

Info

Publication number
WO2010115742A1
WO2010115742A1 PCT/EP2010/054072 EP2010054072W WO2010115742A1 WO 2010115742 A1 WO2010115742 A1 WO 2010115742A1 EP 2010054072 W EP2010054072 W EP 2010054072W WO 2010115742 A1 WO2010115742 A1 WO 2010115742A1
Authority
WO
WIPO (PCT)
Prior art keywords
cushion
dumper
headrest
compression force
backrest
Prior art date
Application number
PCT/EP2010/054072
Other languages
English (en)
Inventor
Piero Enrico Gilardi
Original Assignee
Toscana Gomma S.P.A.
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 Toscana Gomma S.P.A. filed Critical Toscana Gomma S.P.A.
Publication of WO2010115742A1 publication Critical patent/WO2010115742A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
    • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
    • B60N2/4228—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the rear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/64—Back-rests or cushions
    • B60N2/643—Back-rests or cushions shape of the back-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/888—Head-rests with arrangements for protecting against abnormal g-forces, e.g. by displacement of the head-rest

Definitions

  • the present invention refers to a dumper cushion for protection against whiplash.
  • the present invention concerns a dumper cushion for protection against whiplash that can be inserted at various points of the seat of a motor vehicle, for example the backrest and the headrest.
  • the invention further concerns a backrest and a headrest of a motor vehicle equipped with a dumper cushion for protection against whiplash.
  • Whiplash is a traumatic event affecting the cervical vertebrae caused by a sharp movement of the head which exceeds the physiological range of joint movement.
  • the mechanism of injury is due to the concurrence of two forced, and therefore unnatural, movements of the head, known as hyperextension and hyperflexion.
  • Figures 1 to 3 show what happens to the occupant of a motor vehicle during a collision.
  • the head can go as far as to hit the steering wheel, causing a worse injury to the occupant.
  • the backrest and the headrest of the seat of a motor vehicle must be shaped and formed so as to reduce as far as possible the above mentioned movements of hyperextension and hyperflexion of the head.
  • the axis of the spine and the head of the occupant must be supported so as to remain as far as possible in the erect position shown in Figure 1.
  • European patent application EP 1 896 291 in the name of Volkswagen AG, describes a system for protection against whiplash comprising a lumbar support connected to a headrest by means of a system of levers.
  • a system of levers causes the headrest to move forward, so as to bring it nearer to the occupant's nape, and thus limit the movement of hyperextension and the subsequent movement of hyperflexion.
  • the main object of the present invention is therefore that of eliminating the above reported drawbacks, by providing a dumper cushion for protection against whiplash that is able to limit not only the movement of hyperextension but also the subsequent movement of hyperflexion of the head, reducing to a minimum the accumulation of energy at the headrest and/or backrest and, therefore, the forward rebound of the masses that impact thereon.
  • Another object of the present invention is to provide a dumper cushion for protection against whiplash that is light and easily insertable into the headrest and/or the backrest of the seat of a motor vehicie.
  • the last object of the present invention is that of providing a dumper cushion for protection against whiplash that is simple to make and can be produced at competitive cost.
  • a dumper cushion for protection against whiplash suitable for being applied to the headrest and/or backrest of the seat of a motor vehicle, characterized in that it comprises a hollow casing filled with air and having a calibrated hole communicating with the exterior to permit the dumper cushion to be gradually deflated by a compression force applied thereto and subsequently to be gradually reinflated when said compression force is stopped.
  • Figure 1 is a diagrammatic view showing the position of a motorist's back and head immediately before a collision
  • Figure 2 is a diagrammatic view showing the movement of hyperextension of the motorist's head following a collision
  • Figure 3 is diagrammatic view showing the movement of hyperflexion of the motorist's head following a collision
  • Figure 4 is a cross sectional view of a dumper cushion according to a preferred embodiment of the present invention.
  • Figure 5 shows the dumper cushion of Figure 4 in the position of use inside the backrest and the headrest of the seat of a motor vehicle.
  • a dumper cushion for protection against whiplash according Io the invention, designated as a whole with reference numeral 10, comprises a hollow casing 12 filled with air.
  • the hollow casing 12 is preferably obtained by blowing plastic material and has a calibrated hole 14 suitable for communicating with the exterior.
  • the hollow casing 12 preferably has a volume varying from 0.2 to 1.5 litres based on the shape of the dumper cushion 10 and the compression force to be dumped.
  • the calibrated hole 14 preferably has a diameter varying between 0.5 and 3 mm based on the compression force to be dumped.
  • the diameter of the calibrated hole 14 is sized precisely by proceeding by trial and error.
  • the hollow casing 12 filled with air is provided with a sealing cap 16, which locks an interchangeable membrane 18 on which said hole 14 is made.
  • Tests are performed with membranes 18 with holes 14 of different diameters until the membrane 18 with the hole 14 of a suitable diameter is found.
  • the diameter of the hole 14 depends upon the volume of the hollow casing 12 and the compression force to be dumped.
  • the sealing cap 16 is removed, leaving the membrane 18 with the calibrated hole 14 of the correct diameter in place on the hollow casing 12.
  • the hollow casing 12 can preferably be bellows- shaped. This advantageously allows squeezing of the dumper cushion 10 and gradual deflation thereof to be facilitated.
  • the hollow casing 12 is preferably filled with an expanded material, for example a polyurethane foam 20, to facilitate gradual reinflation of the dumper cushion 10 and its slow return to the normal position of use after the impact, without affecting its resistance to flattening.
  • an expanded material for example a polyurethane foam 20
  • Figure 5 shows a seat 30 of a motor vehicle, which comprises a seat (not shown), a head rest 32 and a backrest 34.
  • the headrest 32 is preferably fixed to the backrest 34 by means of metal rods 36.
  • the headrest 32 and the backrest 34 preferably comprise a respective outer layer 31, 33 of soft expanded material, for example polyurethane foam, to increase the user's comfort.
  • a first dumper cushion 10a is inserted in the headrest 32 and a second dumper cushion 10b is inserted in the backrest 34 of the seat 30.
  • the second dumper cushion 10b is preferably inserted in the backrest 34 level with the occupant's shoulder blade area.
  • the occupant's head and back therefore enter suddenly into contact with the headrest 32 and the backrest 34, respectively exerting a compression force Ft on the dumper cushion 10a and a compression force Fs on the dumper cushion 10b.
  • the air contained in the hollow casing 12a of the dumper cushion 10a exits through the calibrated hole 14a with a resistance that increases with the compression force Ft exerted by the head on the headrest 32 of the seat 30. Consequently, the dumper cushion 10a gradually deflates, absorbing the compression force Ft and thus dumping the impact.
  • the gradual deflation of the dumper cushion 10a prevents the phenomenon of elastic return of the energy accumulated by the head pressed against the headrest 32.
  • the forward rebound of the head, and thus its movement of hyperflexion, is advantageously reduced or completely eliminated.
  • the dumper cushion 10a is preferably drop- shaped and therefore presents a greater volume in its bottom portion. Thanks to this particular configuration, in the event of a collision, the head sinks into the headrest 32, maintaining a slightly forward bending attitude, which further reduces the risk of hyperfiexion.
  • the air contained in the hollow casing 12b of the dumper cushion 10b exits from the calibrated hole 14b with a resistance that increases with the compression force Fs exerted by a back on the backrest 34 of the seat 30.
  • the dumper cushion 10b deflates gradually, absorbing the compression force Fs and thus dumping the impact. Furthermore, the gradual deflation of the dumper cushion 10b prevents the phenomenon of elastic return of the energy accumulated by a back pressed against the backrest 34. The forward rebound of the back which, as explained previously, can cause e further hyperflexion of the head, is thus reduced or completely cancelled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne un coussin amortisseur (10 ; 10a, 10b) procurant une protection contre le coup du lapin, adapté pour être posé sur l'appui-tête et/ou le dossier du siège d'un véhicule motorisé. Le coussin amortisseur (10 ; 10a, 10b) comporte une enveloppe creuse (12 ; 12a, 12b) remplie d'air et ayant un trou étalonné (14 ; 14a, 14b) en communication avec l'extérieur pour permettre un dégonflage progressif du coussin amortisseur (10 ; 10a, 10b) sous l'action d'une force de compression (Ft, Fs) exercée dessus et un regonflage progressif ultérieur de celui-ci suite à l'interruption de la force de compression exercée (Ft, Fs).
PCT/EP2010/054072 2009-04-07 2010-03-29 Coussin amortisseur de protection contre le coup du lapin WO2010115742A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2009A000550 2009-04-07
ITMI2009A000550A IT1393551B1 (it) 2009-04-07 2009-04-07 Cuscino smorzante per la protezione da colpo di frusta

Publications (1)

Publication Number Publication Date
WO2010115742A1 true WO2010115742A1 (fr) 2010-10-14

Family

ID=41130151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/054072 WO2010115742A1 (fr) 2009-04-07 2010-03-29 Coussin amortisseur de protection contre le coup du lapin

Country Status (2)

Country Link
IT (1) IT1393551B1 (fr)
WO (1) WO2010115742A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3133570A1 (fr) 2022-03-16 2023-09-22 Psa Automobiles Sa Appui-tête pour siège de véhicule pourvu d’un coussin de protection anti coup du lapin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757533A1 (de) * 1997-12-23 1998-10-01 Brose Fahrzeugteile Sicherheits-Fahrzeugsitz
DE19938698A1 (de) * 1999-08-14 2001-02-15 Volkswagen Ag Fahrzeugsitz
WO2006136485A1 (fr) * 2005-06-23 2006-12-28 Volkswagen Aktiengesellschaft Appui-tete optimise contre le coup de fouet cervical

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757533A1 (de) * 1997-12-23 1998-10-01 Brose Fahrzeugteile Sicherheits-Fahrzeugsitz
DE19938698A1 (de) * 1999-08-14 2001-02-15 Volkswagen Ag Fahrzeugsitz
WO2006136485A1 (fr) * 2005-06-23 2006-12-28 Volkswagen Aktiengesellschaft Appui-tete optimise contre le coup de fouet cervical
EP1896291A1 (fr) 2005-06-23 2008-03-12 Volkswagen Aktiengesellschaft Appui-tete optimise contre le coup de fouet cervical

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3133570A1 (fr) 2022-03-16 2023-09-22 Psa Automobiles Sa Appui-tête pour siège de véhicule pourvu d’un coussin de protection anti coup du lapin

Also Published As

Publication number Publication date
ITMI20090550A1 (it) 2010-10-08
IT1393551B1 (it) 2012-04-27

Similar Documents

Publication Publication Date Title
US7090292B2 (en) Energy absorbing support for vehicular passengers
US5961182A (en) Energy absorbing support for vehicular passengers
JP3959635B2 (ja) 自動車用シート
US6820930B2 (en) Fluid-actuated support for vehicular seats
JPH11508209A (ja) 鞭打ち症防止装置
JP4140942B2 (ja) 車両用シート
EP2907692B1 (fr) Siège enfant avec protection latérale de tête
WO2010115742A1 (fr) Coussin amortisseur de protection contre le coup du lapin
RU2620144C1 (ru) Адаптивное транспортное кресло повышенной безопасности
CN211765127U (zh) 一种可充气式汽车地毯及充气控制装置
JP2008512293A (ja) 側突における胴部防護に特に有用な、シートに装着された膨張式のチューブ状または他のクッション
US11472364B2 (en) Vehicle seat
US6189969B1 (en) Vehicle seat adapted to protect occupant from injury in rear end collision
CN108136942B (zh) 包括变形部分的车辆座椅装置及方法
EP1373013B1 (fr) Appui-tete de voiture a action ininterrompue
RU2620145C1 (ru) Адаптивное транспортное кресло с активными спинкой и подголовником
RU164359U1 (ru) Адаптивное транспортное кресло
JP4147477B2 (ja) 緩衝装置及びそれを備えたシート構造
CN220130077U (zh) 一种智能五点式气囊安全带及安全座椅
KR200209163Y1 (ko) 자동차 리어 시트의 발판
CN212709099U (zh) 一种带有应急缓冲的汽车座椅靠背支架
KR100461106B1 (ko) 완충장치가 구비된 차량용 시트백 구조
JP2007314151A (ja) 柔軟素材のクッションによる首への衝撃軽減装置及びその方法
CN206664365U (zh) 座椅头枕和座椅
WO1997008016A2 (fr) Amortisseur de chocs a coussin d'air pour vehicule

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10711392

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10711392

Country of ref document: EP

Kind code of ref document: A1