GB2342037A - Vehicle safety seat - Google Patents

Vehicle safety seat Download PDF

Info

Publication number
GB2342037A
GB2342037A GB0000978A GB0000978A GB2342037A GB 2342037 A GB2342037 A GB 2342037A GB 0000978 A GB0000978 A GB 0000978A GB 0000978 A GB0000978 A GB 0000978A GB 2342037 A GB2342037 A GB 2342037A
Authority
GB
United Kingdom
Prior art keywords
support portion
seat
pelvic
person
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB0000978A
Other versions
GB0000978D0 (en
GB2342037B (en
Inventor
Mark Geoffrey Knowles
Andrew John Burrows
Peter Mcgeehin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SLIPCATCH Ltd
Original Assignee
SLIPCATCH Ltd
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
Priority claimed from GBGB9610472.4A external-priority patent/GB9610472D0/en
Application filed by SLIPCATCH Ltd filed Critical SLIPCATCH Ltd
Priority to GB0000978A priority Critical patent/GB2342037B/en
Publication of GB0000978D0 publication Critical patent/GB0000978D0/en
Publication of GB2342037A publication Critical patent/GB2342037A/en
Application granted granted Critical
Publication of GB2342037B publication Critical patent/GB2342037B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42709—Seats or parts thereof displaced during a crash involving residual deformation or fracture of the structure
    • 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
    • B60N2/242—Bus seats
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

A vehicle seat, eg for a train, has a rear member 20 which includes pelvis, back and head support portions 14,12. 16. The pelvis support region has a large surface area which may curve outwardly of the seat. A downward projection 38 is provided in the lower part of the pelvis region and acts in the event of a collision to cushion the legs of a passenger facing the rear of the seat and prevent their legs striking the seat mount 80 which is contained in recess 82.

Description

2342037 IMprovements, in or relating to seats This invention relates to
seats. More particularly, but not exclusively, this invention relates to seats for use in trains, or other public transport vehicles such as coaches and buses for use on the road.
A disadvantage of known seats for use in trains, buses or coaches that they provide insufficient protection in the event of a crash.
According to a this invention there is provided a seat comprising a back support portion for supporting the back of a person and a pelvic support portion extending below and forwardly of the back support portion, for supporting the pelvic region of the person, wherein the pelvic support portion comprises a central area having a large surface area. Thus, the pelvic support portion presents a large surface area to the -legs of a funher person in a scat behind facing in the same direction, thereby cushioning the legs of said further person in the event of said further person's legs striking the pelvic support portion of said seat during a crash.
Preferably, the pelvic support portion further includes a downwardly extending member, at the lower region of said pelvic support portion. This has the advantage of further cushioning the legs of the person in the seat behind and preventing the legs from striking the mounting upon which the scat is mounted.
The pelvic support region may curve outwardly of the seat, with a radius of curvature greater than substantially 0.01m preferably substantially 0. 1m, or may be planar.
The pelvic support portion may include a central area to receive the pelvic region of the person, and force absorbing means at said central area, each force absorbing means having a substantially triangular crosssectional 2 configuration, whereby the force absorbing means are adapted to absorb at least some of a force applied to the seat in the forward direction. Preferably, the seat includes first and second force absorbing means arranged at opposite sides of said central area.
The seat may include a rear member extending from the back support portion to the pelvic support portion. The seat may also include a skirting member, which may extend at least part way, and preferably, the whole way around the rear member.
Preferably, the force absorbing means are adapted to fail progressively when said force is applied.
The or each force absorbing means conveniently comprises a wall member extending from the skirting member to the rear member to define said substantially triangular configuration. A flange member may be provided, said flange member preferably extending substantially parallel to the skirting member and may be in engagement with said skirting member. Conveniently, the force absorbing means is secured to the skirting member.
Thus, an initial force applied to the seat to move the back support portion forwardly can cause the flange member to buckle. Thereafter, applying a further force to move the back portion forwardly can cause the wall member to fail progressively, for example by cracking. Thereby, the force absorbing means absorbs progressively a force applied to the seat such as to move the back portion forwardly of the pelvic support portion. In the preferred embodiment, the initial force to buckle the flange member will be larger than the further force to cause the wall member to crack.
Preferably, the or each force absorbing means is formed of a material which is able to undergo brittle fracture failure, i.e. it is substantially fully elastic to failure and thereafter can support substantially no further load. A suitable such material is a reinforced plastics material, for example a glass fibre 3 reinforced plastics material.
The wall member may include a transverse portion extending transversely from the flange member. Preferably, the transverse portion extends substantially perpendicularly from the flange member. The transverse portion may increase progressively in width from the flange member in the direction from the upper end of the pelvic support portion to the lower end thereof.
The wall member may be in the form of an elongate substantially flat member extending along the seat at an oblique angle to said skirting member and said rear member.
A head support portion may extend above the back support portion, the back support portion and the head support portion comprising a rear member, and the back support portion including force absorbing means wherein the force absorbing means tapers inwardly to the rear member at the head support portion to reduce rigidity at said head support portion. Preferably, the back support portion includes force absorbing means at either side of the back support portion.
Preferably, the rear member at the head support portion includes a raised area and a surrounding area, the surrounding area being preferably substantially co-planar with said back support portion.
The seat may include a leg support portion for supporting the legs of a person, the leg support portion having a collapsible front area. Thus, the seat presents to a further person seating in a scat opposite and facing in the opposite direction, a large surface area at the leg support portion, thereby cushioning the legs of said person in the event of said person's legs striking the leg support portion of said seat during a crash.
Preferably the front area is curved and advantageously has a large 4 surf ace area.
The front area of the leg support region may curve outwardly, with a radius of curvature greater than substantially 0.01m preferably substantially 0.05m or may be planar.
Preferably, the leg support portion extends downwardly to define a recess to receive a mounting for the seat. This has the advantage of preventing the legs of said person striking the mounting upon which the seat is mounted.
An embodiment of the invention will now be described by way of example only with reference to the accompanying drawings in which:- Fig. 1 is a side view of a seat; and Figs. 2A to 2D are views respectively along the arrows A-A, B-B, C-C and D-D of the planes so marked in Fig. 1.
Referring to Fig. 1, there is shown a seat 10 suitable for use, for example, in a train. Seat 10 comprises a back support portion 12 for supporting the back of the person sitting in the seat, a pelvic support portion 14 for supporting the pelvic region of the person, a head support portion 16 for supporting the head of the person, and a leg support portion 18 for supporting the legs of the person.
The seat 10 is formed of a rear member 20 extending from the head support portion 16 to the leg support portion 18, and a forwardly extending skirting member 22 provided at each side of the rear member 20. The portion of the skirting member 22 at the top of the head support portion 16 is designated 22A and that at the front of the leg support portion 18 is designated 22E. The skirting member 22 extends forwardly of the rear member 20 at the head support portion 16 and is designated 22B and at the back support portion 12 is designated 22C. The skirting member 22 extends upwardly of the rear member 20 at the leg support portion 18 and is designated 22D.
Strengthening means 24 is provided at each side of the rear member 20 tapering from the head support portion 16, as shown in Fig. 1, to the leg support portion 18, also as shown in Fig. 1. Referring to Figs. 2A to 2D, each strengthening means 24 comprises a wall member 26 having a flange member 28 extending parallel to the skirting member 22, and a securing rim 30 to be attached to the rear member 20. The flange member 28 can be attached to the skirting member 22. The attachment of the flange member 28 and the securing rim 30 can be by appropriate adhesive or by suitable attachment means, for example nuts and bolts.
The wall member 26 defines with the rear member 20 and the skirting member 22 a hollow space 32, which is substantially triangular in configuration, as shown.
In the pelvic support region 14, the strengthening means 24 defines force absorbing means, as shown in Figs. 2C and 2D, and designated for ease of understanding by the numeral 24A. In the force absorbing means 24A, the wall member 26 comprises a transverse portion 34 which, as shown in Figs. 2C and 2D increases in width progressively from the section shown in Fig. 2C to the section shown in Fig. 21). The flange member 28 and the wall member 26 act to absorb a force applied to the seat 10 in the direction of the arrow X. When the force is applied initially the flange member 28 buckles. Thereafter, the wall member 26, (including the transverse portion 34) fails progressively so that as the force is applied, the wall member 26 cracks progressively in the direction from the flange member 28 to the securing rim 30. This buckling of the flange member 28 and progressive cracking of the wall member 26 progressively absorbs the force applied to the seat in the direction of the arrow X.
Also, the force absorbing means 24A will maintain its rigidity if a force is applied to the seats in the direction of the arrow Y in Fig. 1.
The head support region 16 comprises a raised area of the rear member 20 at the head support portion 16 to engage the head of the person sitting in 6 the seat. Also, since the strengthening means 24 taper progressively towards the rear member 20, and terminate at the heat support portion 16, the rigidity of the scat 10 at the head support portion 16 is reduced.
In use, the seat 10 is supported by and fixed to an appropriate mounting 80, in the manner known in the art.
The pelvic support portion 14 has been designed to provide cushioning to a person sitting in the seat behind, facing the same direction. In a crash, the legs of the person behind wrill be projected forwards and will impact against the pelvic support portion 14 of the seat in front. Further movement of the legs will cause them to move towards the mounting 80. In the embodiment shown, the pelvic support portion 14 curves outwardly having a large radius of curvature thereby presenting a large surface area rearwardly of the seat, for impact by the legs of the person behind. The pelvic support portion could, if desired, be substantially planar. The pelvic support portion 14 further includes a downwardly extending member 38 which prevents the legs of the person behind impacting against the mounting 80 upon which the seat 10 is mounted.
The leg support portion 18 defines, at the front thereof, an outwardly curving region, defined by the part of the skirting member 22 designated 22E. In the situations where the seat 10 faces another seat facing in the opposite direction, a crash could result in the legs of the person sitting opposite swinging out and impacting against the skirting member 22E. This region has a large radius of curvature, or could be planar, and, therefore, provides cushioning in the event of impact by the legs of the person sitting opposite, thereby preventing injury. Also, as with the impact of the legs against the pelvic support region 14, the legs impacting against the front region of the leg support region 18 may impact against the mounting 80. This is prevented by the leg support region 18 defining a recess 82 into which the mounting 80 is received. In this way, the legs of the person in the seat in front are prevented from colliding against the mounting 80.
7 Various modifications can be made without departing from the scope of the invention.
Whilst endeavouring in the foregoing specification to draw attention to those features of the invention believed to be of particular importance it should be understood that the Applicant claims protection in respect of any patentable feature or combination of features hereinbefore referred to and/or shown in the drawings whether or not particular emphasis has been placed thereon.
8

Claims (12)

  1. I. A seat comprising a back support portion for supporting the back of a person and a pelvic support portion extending below and forwardly of the back support portion, for supporting the pelvic region of the person, wherein the pelvic support portion comprises a central area having a large surface area.
  2. 2. A seat according to claim 1 wherein the pelvic support portion further includes a downwardly extending member, at the lower region of said pelvic support portion.
  3. 3. A seat according to claim 1 or 2 wherein the pelvic support portion curves outwardly of the seat, with a radius of curvature greater than substantially 0.01m.
  4. 4. A scat according to claim 3 wherein the radius of cunature of the pelvic is greater than substantially 0.1m.
  5. 5. A seat according to claim 3 or 4 wherein the pelvic support portion is substantially planar.
  6. 6. A seal according to any preceding claim including a leg support portion for supporting the legs of a person, the leg support portion having a collapsible front area.
  7. 7. A seat according to claim 6 wherein the front area is curved and has a large surface area.
  8. 8. A seat according to claim 6 or 7 wherein the front area of the leg support region curves outwardly, with a radius of curvature greater than substantially 0.01m.
  9. 9 9. A scat according to claim 8 wherein the radius of curvat-ure of the leg support region is substantially 0.05m.
  10. 10. A seat according to claim 8 or 9 wherein the leg support region is substantially planar.
  11. 11. A scat according to any of claims 6 to 10 wherein the leg support portion extends downwardly to define a recess to receive a mounting for the seat.
  12. 12. A seat substantially as herein described with reference to the accompanying drawings.
GB0000978A 1996-05-18 1997-05-02 Improvements in or relating to seats Expired - Fee Related GB2342037B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0000978A GB2342037B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9610472.4A GB9610472D0 (en) 1996-05-18 1996-05-18 Improvements in or relating to seats
GB0000978A GB2342037B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats
GB9708895A GB2313047B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats

Publications (3)

Publication Number Publication Date
GB0000978D0 GB0000978D0 (en) 2000-03-08
GB2342037A true GB2342037A (en) 2000-04-05
GB2342037B GB2342037B (en) 2000-07-05

Family

ID=26309362

Family Applications (3)

Application Number Title Priority Date Filing Date
GB0000982A Expired - Fee Related GB2342038B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats
GB0000976A Expired - Fee Related GB2342036B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats
GB0000978A Expired - Fee Related GB2342037B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB0000982A Expired - Fee Related GB2342038B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats
GB0000976A Expired - Fee Related GB2342036B (en) 1996-05-18 1997-05-02 Improvements in or relating to seats

Country Status (1)

Country Link
GB (3) GB2342038B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012108506B4 (en) * 2012-09-12 2024-03-28 Adient Us Llc Motor vehicle bucket seat

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088367A (en) * 1977-06-20 1978-05-09 Rohr Industries, Inc. Vehicle seat assembly
US4191417A (en) * 1978-06-28 1980-03-04 General Motors Corporation Vehicle seat
US4500137A (en) * 1982-01-21 1985-02-19 Morehouse Laurence E Physiological chair
US4637651A (en) * 1983-08-10 1987-01-20 Saab-Scania Aktiebolag Seat plate
EP0259609A2 (en) * 1986-09-08 1988-03-16 Girsberger Holding AG Chair
US4848837A (en) * 1986-10-15 1989-07-18 Voelkle Rolf Chair having a pelvis-hip support adjustable relative to a front seat portion
GB2222072A (en) * 1988-06-23 1990-02-28 Esteban Ind Sa Monopiece vehicle seat
WO1995034234A1 (en) * 1994-06-14 1995-12-21 The Board Of Trustees Operating Michigan State University Seat with biomechanical articulation
EP0688521A1 (en) * 1994-06-22 1995-12-27 Albert Palanque Seating furniture with multiple positions
GB2302270A (en) * 1995-06-16 1997-01-15 Inst Of Occupational Safety & Health Council Of Labor Affairs Work chair

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1348873A (en) * 1972-02-11 1974-03-27 Ford Motor Co Motor vehicle seat
GB1434931A (en) * 1972-06-13 1976-05-12 British Leyland Motor Corp Passenger restraint devices for passenger vehicles
US4109959A (en) * 1977-04-14 1978-08-29 American Seating Company Transportation seat with energy absorption
GB2087226B (en) * 1980-09-04 1984-12-05 Transport The Minister Of Shock absorbing seat
DE3342881A1 (en) * 1983-11-26 1985-06-05 Westfalia-Werke Franz Knöbel & Söhne KG, 4840 Rheda-Wiedenbrück UPHOLSTERED SEAT, ESPECIALLY UPHOLSTERED SEAT, FOR VEHICLES
JPS61158538U (en) * 1985-03-26 1986-10-01
DE4211964C2 (en) * 1992-04-09 1995-11-09 Daimler Benz Ag Deformation body designed as a corrugated tube
GB2283163A (en) * 1993-10-26 1995-05-03 Autoliv Dev "Improvements in or relating to a vehicle seat"
US5509716A (en) * 1994-11-08 1996-04-23 General Motors Corporation Vehicle seat with perimeter frame and pelvic catcher
US5580124A (en) * 1995-06-26 1996-12-03 Dellanno; Ronald P. Apparatus for preventing whiplash

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088367A (en) * 1977-06-20 1978-05-09 Rohr Industries, Inc. Vehicle seat assembly
US4191417A (en) * 1978-06-28 1980-03-04 General Motors Corporation Vehicle seat
US4500137A (en) * 1982-01-21 1985-02-19 Morehouse Laurence E Physiological chair
US4637651A (en) * 1983-08-10 1987-01-20 Saab-Scania Aktiebolag Seat plate
EP0259609A2 (en) * 1986-09-08 1988-03-16 Girsberger Holding AG Chair
US4848837A (en) * 1986-10-15 1989-07-18 Voelkle Rolf Chair having a pelvis-hip support adjustable relative to a front seat portion
GB2222072A (en) * 1988-06-23 1990-02-28 Esteban Ind Sa Monopiece vehicle seat
WO1995034234A1 (en) * 1994-06-14 1995-12-21 The Board Of Trustees Operating Michigan State University Seat with biomechanical articulation
EP0688521A1 (en) * 1994-06-22 1995-12-27 Albert Palanque Seating furniture with multiple positions
GB2302270A (en) * 1995-06-16 1997-01-15 Inst Of Occupational Safety & Health Council Of Labor Affairs Work chair

Also Published As

Publication number Publication date
GB2342038B (en) 2000-10-18
GB0000978D0 (en) 2000-03-08
GB2342036B (en) 2000-05-17
GB0000982D0 (en) 2000-03-08
GB2342036A (en) 2000-04-05
GB2342037B (en) 2000-07-05
GB2342038A (en) 2000-04-05
GB0000976D0 (en) 2000-03-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020502