WO1995005954A1 - Agencement d'appui-tete - Google Patents

Agencement d'appui-tete Download PDF

Info

Publication number
WO1995005954A1
WO1995005954A1 PCT/NO1994/000135 NO9400135W WO9505954A1 WO 1995005954 A1 WO1995005954 A1 WO 1995005954A1 NO 9400135 W NO9400135 W NO 9400135W WO 9505954 A1 WO9505954 A1 WO 9505954A1
Authority
WO
WIPO (PCT)
Prior art keywords
cushion
fluid
head support
pressure
weakened
Prior art date
Application number
PCT/NO1994/000135
Other languages
English (en)
Inventor
Leiv Sandvik
Bent Heimreid
Original Assignee
Leiv Sandvik
Bent Heimreid
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 Leiv Sandvik, Bent Heimreid filed Critical Leiv Sandvik
Priority to AU75477/94A priority Critical patent/AU7547794A/en
Publication of WO1995005954A1 publication Critical patent/WO1995005954A1/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
    • B60N2/80—Head-rests

Definitions

  • the invention relates to an arrangement of support elements and particularly head supports for use in e.g. a motor vehicle, where a bag filled with a fluid which may be a gas, such as air, a liquid or other medium.
  • a fluid which may be a gas, such as air, a liquid or other medium.
  • the head support constitutes a significant factor in connec ⁇ tion with protecting persons in motor vehicles from injury in the event of cidents. Accordingly the head support must be robust and firmly anchored, while on the other hand it must be capable of absorbing the impact of the head in a flexible and benign manner in the event of, for example, a collision. Therefore most head supports are padded. Various types of air- filled paddings and also air bags for fitting in or as an integral part of head supports have been developed to increase the shock absorbing properties of the head support.
  • the German patent publications 2 918 041 and 4 110 953, and also SE 4 286 666, can be mentioned as references in this connection. These publications show inflatable head supports. Variants of this principle consist in head support cushions having a soft, porous padding such as cellular plastic, where the cells in the paddings are filled with air. Such head supports are described in D ⁇ 3 928 884 and US patent 3 027 193.
  • the present invention is designed to improve the known head support structures so that the said ricochet forces are reduced to the greatest possible extent, thus reducing the risk of permanent injuries following collisions.
  • a further purpose of the invention is to provide such an improved head support device that can be fitted on already existing head supports and can be used as an integral part of the actual head support structure.
  • the device according to the invention is a head support shaped preferably as a small cushion that is fastened on or preferably constitutes the front of the head support in a motor vehicle and which can be filled with a fluid.
  • the cushion When filled with fluid to a suitable extent the cushion will reduce the rapid backward movement of the head by reason of change in form and volume.
  • the cushion is made with weakened zones so that it will burst when subjected to a particular pressure. These weakened zones may be designed as e.g. one or more weakened lines, so that the cushion tears, or may consist of sealed holes that will open when the internal pressure inside the cushion exceeds a certain limit.
  • a preferred embodiment is that where, at a certain pressure inside the cushion, the fluid will be displaced or pass rapidly over into another suitable inflatable cushion/container which is designed in a suitable manner to receive the fluid.
  • This will bring about a further positive utilization of the basic idea of the invention as, in addition to transfer of energy by the fluid, secondary support for, e.g. a person's head/neck region is provided shortly after the moment of collision.
  • Another alternative embodiment may be to keep the cushion expanded or "inflated" by a filling of cellular plastic where the cells are filled with a fluid. In such a case it will not be necessary to have sealed openings or use a weakened line, as air will be expelled by th holes themselves.
  • These bodies may take different forms, but the desired effect will be that an increasing number of cells will burst with gradually increasing pressur on these bodies. Thereby individual expedient reductic .s will be achieved depending on the force of the collision.
  • each separate small cell of this type is a kind of mini-version of the aforementioned preferred fluid-filled cushion.
  • the invention is not confined to how many cavities a cushion shall contain, but these may themselves also have weakened zones that tear at a particular internal pressure.
  • cushions having openings for expelling air are known from the air bags fitted in the wheel or dashboard of a vehicle.
  • these known air bags operate on a different principle, in that at the moment of collision or immediately afterwards they are inflated and thus counteract the person' s forward movement. So that the bag does not become stone hard and in itself constitute a hazard, it is necessary to have a safety device, such as an air valve, which ensures that the bag can only be inflated to a certain extent. Thus it does not involve the question of reducing ricochet force such as occurs on the impact of the head against the head support. Neither are weakened zones used.
  • the device according to the invention may be fitted with means of attachment, for example a pocket for inserting or a cover that can be pulled over the existing head support in such a manner that the device can to advantage be fastened on the front of it.
  • means of attachment for example a pocket for inserting or a cover that can be pulled over the existing head support in such a manner that the device can to advantage be fastened on the front of it.
  • Fastening tapes, straps or other means of attachment may also be used for this purpose.
  • the cushion can be integrated in the head support itself when new such supports are designed.
  • Fig. 1 a side view of the back of a seat with a head support and a device according to the invention fitted according to the first form of embodiment, with a person sitting seen from the side.
  • Fig. 2 a side view of a device according to the invention with another form of mounting
  • Fig. 3 an embodiment of a cushion in the device according to the invention equipped with weakened lines
  • Fig. 4 an embodiment corresponding to Fig. 3 but with sealed holes
  • Fig. 5 corresponding to Fig. 2, without weakened lines in the cushion- but with another cushion/container connected to or integrated in the cushion.
  • Fig. 6 corresponding to Fig. 5, where the fluid has passed to the other cushion and formed for example a head support for the person a moment after the collision
  • Fig. 7 an embodiment corresponding to Fig. 2, but with cellular plastic filling and open holes, with suitable bodies designed to crack the cells at an appropriate pressure. Weakened lines are shown by references 2 and 3
  • Fig. 8 an embodiment corresponding to Fig. 7, where the cell bodies have cracked at a certain pressure and the fluid has been evacuated through the open holes.
  • Reference 10 in the figures schematically indicates the back of a seat on which a conventional head support 11 is mounted.
  • the cushion 1 is thus fixed on the front of the head support and constitutes a device according to the present invention.
  • a side view of a person and head is shown by reference 12.
  • Fig. 2 shows a version for mounting the device according to the invention, in that here the cushion 1 is fastened to the head support and a suitable cover 9, so that the cushion covers the whole of the head support and gives it a uniform appearance.
  • Figs. 3 - 8 illustrate different embodiments of the cushion in the device according to the invention.
  • the cushion 1 is shown schematically, in that its form will depend on the design of the seat 10, or the existing head supports etc. This form of cushion 1 is thus no part of the invention and may be designed in many ways.
  • the side surfaces of the cushion 1 are constructed with two weakened lines 2 and 3.
  • the cushion is filled with a fluid and is inflated to a certain predetermined pressure, for example to withstand a load of 80 kg. This pressure is preferably pre-set so that the desired effect is ensured and so that the user is unable to make any wrong adjustments himself, for example inflating it so that it is too hard or insufficiently inflating it because he wishes to have a softer cushion.
  • the weakened lines 2 and 3 will tear, preferably at either end of the cushion and absorb the impact by means of yield in the volume and shape of the cushion.
  • These lines may for example be 15 cm long. The pressure at which the lines, i.e. the cushion, will tear must be determined by experiments and calculation.
  • weakened lines 2 and 3 tear at different pressures.
  • additional yielding of the cushion can be achieved, in that for example weakened line 2 will tear in the event of a heavy collision so that the fluid flows out at a given rate and if the impact is heavier line 3 will tear also and in a benign manner absorb the backward movement of the head and reduce it preferably to 0. This reduces the risk of the head again being thrown forward with a jerk which could cause whip ⁇ lash injuries.
  • Fig. 4 shows a version of the embodiment in Fig. 3, where the cushion similarly is filled to a predetermined pressure.
  • the cushion is equipped with holes 4 and 4' which are closed by seals 5 and 5 ' , which may be a sealing strip or a plug or tear-off foil over the hole. These seals will break at a predetermined pressure and it is possible to use this same version with two different pressures as described in connection with Fig. 3.
  • Fig. 5 shows a version where the cushion is filled with a fluid and expanded thereby, and a head 12 resting against the cushion in the driving position.
  • An empty container or cushion 7 is arranged which is connected to or integrated in the cushion 1 in which a valve 6 or other known device for opening and transferring the fluid at a predetermined pressure can be used.
  • Fig. 6 shows the head 12 at the time of collision when the head is thrown backwards and the fluid from the cushion 1 is expelled via a valve of a known type into the container 7 which preferably forms a cushion and support for the head 12 shortly after the collision.
  • Fig. 7 shows another version where the cushion is part of the head support.
  • the cushion is filled with cellular plastic and the cells 14 are filled with a fluid.
  • the cells 14 can have built-in weakened points 2, 3 and/or bodies 15 may be fitted which cut open the adjacent cells so that fluid is ejected from them when subjected to pressure.
  • Fig. 8 shows the cushion following external pressure on the cushion 1 where the bodies 15 after a certain load have burst and emptied so that a number of the cells 14 are emptied and the cushion 1 has thereby collapsed on expulsion of the fluid via the holes 13.
  • Reference 9 indicates the edge of the cover around the head support.
  • the drawing shows only example embodiments and it should be obvious that many modifications will be possible within the framework of the invention.
  • the tear lines may be placed differently, the form of cushion can be varied within wide limits and air-filling valves can be arranged, or the cushion may be permanently sealed.
  • the cushion can to advantage be small when mounted, 30 x 15 cm for example, which may be sufficient to achieve the desired effect.
  • the extra cushion connected to or incorporated in it for receiving the expelled fluid may be of different shapes and have different forms of connection, using known techniques in the zone between these two cavities, for example in the form of a one-way valve which opens at a given internal pressure.
  • the invention Neither is the invention confined to use in head supports in motor vehicles, in that the principle of the device according to the invention can be used anywhere where it is desirable to absorb or reduce impact in a benign manner.
  • This invention constitutes a valuable supplement to safety equipment in e.g. a motor vehicle for limiting injuries to driver and passengers in a collision.
  • the invention will also have social cost-benefit advantages in that it reduces the number of injuries and thereby the costs for treatment of injuries.
  • the device is uncomplicated and can be put into production at reasonable cost with materials that are available for this purpose.

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)

Abstract

Agencement d'appui-tête (11) où est monté un coussin (1) rempli de fluide et destiné à atténuer, dans l'éventualité d'une collision, le mouvement en mèche de fouet de la tête ou d'autres parties du corps d'une personne voyageant dans un moyen de transport tel qu'un véhicule automobile. Le coussin (1) est équipé d'une ou plusieurs zones d'affaiblissement (2, 3) et éventuellement d'une ou plusieurs ouvertures de préférence recouvertes d'un dispositif d'étanchéité. Le coussin (1) est maintenu en position amortissante et souple par une pression appropriée qui, lorsqu'elle atteint une valeur prédéterminée sur le coussin ou à l'intérieur de celui-ci, provoque une déformation du coussin grâce à l'écoulement du fluide à travers une vanne (6) et jusque dans un autre coussin ou récipient (7), ou à des cellules remplies de fluide et adaptées pour se rompre et se vider progressivement à mesure que la pression augmente.
PCT/NO1994/000135 1993-08-20 1994-08-19 Agencement d'appui-tete WO1995005954A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75477/94A AU7547794A (en) 1993-08-20 1994-08-19 Arrangement for head support

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO932986A NO932986L (no) 1993-08-20 1993-08-20 Anordning ved nakkestötte
NO932986 1993-08-20

Publications (1)

Publication Number Publication Date
WO1995005954A1 true WO1995005954A1 (fr) 1995-03-02

Family

ID=19896354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1994/000135 WO1995005954A1 (fr) 1993-08-20 1994-08-19 Agencement d'appui-tete

Country Status (3)

Country Link
AU (1) AU7547794A (fr)
NO (1) NO932986L (fr)
WO (1) WO1995005954A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29610904U1 (de) * 1996-06-21 1996-09-19 Marm, Willi, 86154 Augsburg Auto-Kopf-Ruheband
DE19509014A1 (de) * 1995-03-13 1996-09-19 Christoph Dr Bonke Individuell anpaßbare Kopfstütze für Sitze mit Rückenlehne
DE19514914A1 (de) * 1995-04-22 1996-10-24 Bernd Holfelder Vorrichtung zur Abstützung des Kopfes einer Person in einem Kraftfahrzeug
GB2315408A (en) * 1996-07-23 1998-02-04 Autoliv Dev Energy absorbing headrest for vehicle seat
WO1998030412A1 (fr) * 1997-01-14 1998-07-16 Gunnar Baltzer Dispositif destine a un vehicule automobile
WO2000020248A1 (fr) * 1998-10-08 2000-04-13 Barrenaes Lennart Agencement d'appui-tete supplementaire pour siege de vehicule
US7666895B2 (en) 2002-12-31 2010-02-23 Deciphera Pharmaceuticals, Llc Anti-inflammatory medicaments

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680912A (en) * 1970-09-14 1972-08-01 Hirotsugu Matsura Head-rest of the shock absorbing system
US4744601A (en) * 1987-04-29 1988-05-17 Kabushiki Kaisha Cubic Engineering Headrest apparatus
WO1989011047A1 (fr) * 1988-05-13 1989-11-16 Michael Polus Dispositif d'amortissement d'impacts
US4919483A (en) * 1989-06-16 1990-04-24 Horkey Gregory R Collapsible and reformable headrest for vehicles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680912A (en) * 1970-09-14 1972-08-01 Hirotsugu Matsura Head-rest of the shock absorbing system
US4744601A (en) * 1987-04-29 1988-05-17 Kabushiki Kaisha Cubic Engineering Headrest apparatus
WO1989011047A1 (fr) * 1988-05-13 1989-11-16 Michael Polus Dispositif d'amortissement d'impacts
US4919483A (en) * 1989-06-16 1990-04-24 Horkey Gregory R Collapsible and reformable headrest for vehicles

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509014A1 (de) * 1995-03-13 1996-09-19 Christoph Dr Bonke Individuell anpaßbare Kopfstütze für Sitze mit Rückenlehne
DE19514914A1 (de) * 1995-04-22 1996-10-24 Bernd Holfelder Vorrichtung zur Abstützung des Kopfes einer Person in einem Kraftfahrzeug
DE19514914C2 (de) * 1995-04-22 2000-05-11 Bernd Holfelder Vorrichtung zur Abstützung des Kopfes einer Person in einem Kraftfahrzeug
DE29610904U1 (de) * 1996-06-21 1996-09-19 Marm, Willi, 86154 Augsburg Auto-Kopf-Ruheband
GB2315408A (en) * 1996-07-23 1998-02-04 Autoliv Dev Energy absorbing headrest for vehicle seat
GB2315408B (en) * 1996-07-23 1999-12-01 Autoliv Dev Improvements in or relating to a head-rest
WO1998030412A1 (fr) * 1997-01-14 1998-07-16 Gunnar Baltzer Dispositif destine a un vehicule automobile
WO2000020248A1 (fr) * 1998-10-08 2000-04-13 Barrenaes Lennart Agencement d'appui-tete supplementaire pour siege de vehicule
US7666895B2 (en) 2002-12-31 2010-02-23 Deciphera Pharmaceuticals, Llc Anti-inflammatory medicaments

Also Published As

Publication number Publication date
AU7547794A (en) 1995-03-21
NO932986D0 (no) 1993-08-20
NO932986L (no) 1995-02-21

Similar Documents

Publication Publication Date Title
EP2222500B1 (fr) Dispositif de retenue d'enfant pour véhicule
US5520413A (en) Partitioned multi-cell air bag
EP2499020B1 (fr) Siège pour enfant offrant une protection contre les chocs
US6736455B1 (en) Dual air bag and crossbar child safety seat
US5435594A (en) Dual air bag system for occupant restraint
US5324072A (en) Side impact air bag
US5938231A (en) Air bag device for a two-wheeled motor vehicle
EP2368752B1 (fr) Améliorations associées aux retenues d'enfants dans un véhicule
US5560649A (en) Air bag cushion having variable volume
EP1486384B1 (fr) Siège d'enfant avec airbag
US7748781B2 (en) Head and body protection child safety seat
US5356177A (en) Side impact protection apparatus
US8128165B2 (en) Energy-dissipation system
CN101663183B (zh) 用于保护车辆乘员的机动车辆座椅设备和方法
US6457742B1 (en) Side collision protection system for vehicles
JP2007001362A (ja) エアバッグ装置
US20060131845A1 (en) A multi-chambered air bag for a motor vehicle
US6007091A (en) Safety cushion assembly, specifically in a seating element for an automotive vehicle
WO1995005954A1 (fr) Agencement d'appui-tete
AU2018229548A1 (en) Child seat with impact protection
US6050596A (en) Air bag safety device
US6189969B1 (en) Vehicle seat adapted to protect occupant from injury in rear end collision
CN220076200U (zh) 一种汽车座椅靠背骨架、汽车座椅骨架及汽车座椅
CN215971414U (zh) 一种汽车安全气囊
KR200141716Y1 (ko) 자동차 시트용 헤드레스트

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK ES FI GB GE HU JP KE KG KP KR KZ LK LT LU LV MD MG MN MW NL NO NZ PL PT RO RU SD SE SI SK TJ TT UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA