GB2342036A - Vehicle safety seat - Google Patents
Vehicle safety seat Download PDFInfo
- Publication number
- GB2342036A GB2342036A GB0000976A GB0000976A GB2342036A GB 2342036 A GB2342036 A GB 2342036A GB 0000976 A GB0000976 A GB 0000976A GB 0000976 A GB0000976 A GB 0000976A GB 2342036 A GB2342036 A GB 2342036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support portion
- seat according
- seat
- pelvic
- rear member
- 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
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. Force absorbing means are located at each side of the back and pelvis support regions and take the form of a wall 24 attached across the rear member and a skirting member 22 which extends forward from the rear member so as to form a triangular cross-section therewith (Figs 2A-2D). The wall 24 tapers towards the rear member in the upward direction whereby rigidity at the head support is reduced.
Description
2342036 Immovements 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 this invention there is provided a seat comprising a back support portion for supporting the back of a person, a pelvic support portion extending below and forwardly of the back support portion, and a head support portion extending 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 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 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 scat 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 2 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 pr ogres sively- 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 reinforced plastics material.
The wall member may include a transverse portion extending transversely from the flange member. Preferably, the transverse portion extends substantially perpendicularbl, from the flange member. The transverse 1 3 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.
The pelvic support portion may extend 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 further person in a seat 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 scat behind and preventing the legs from striking the mounting upon which the seat is mounted.
The pel,ic 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 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 seat 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 surface area.
The front area of the leg support region may curve outwardly, with a radius of curvature greater than substantially 0.01m preferabls.. substantially 0.05m or may be planar.
Preferably, the leg support portion extends downwardly to define a recess to receive a mounting for the scat. 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 offiv %.ith 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. Scat 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 222A 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.
C) 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 21), 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 21) increases in width progressively from the section shown in Fig. 2C to the section shown in Fig. 2D. 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.,,hen 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 t 1 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 the scat. Also, since the strengthening means 24 taper progressively towards 6 the rear member 20, and terminate at the heat support portion 16, the rigidity of the seat 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 will be projected forwards and "ill 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 scat 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.
Various modifications can be made without departing from the scope of the invention.
7 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 shos,m in the drawings whether or not particular emphasis has been placed thereon.
1 1 8
Claims (15)
1. A seat comprising a back support portion for supporting the back of a person, a pelvic support portion extending below and forwardly of the back support portion, and a head support portion extending 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 inwardl to the rear member at the head support portion to reduce rigidity at said head support portion.
2. A seat according to claim 1 including said force absorbing means at either side of the back support portion.
3. A seat according to claim 1 or 2 wherein the rear member at the head support portion includes a raised area and a surrounding area, the surrounding area being substantially co-planar with said back support portion.
4. A seat according to any preceding claims, wherein the pelvic support portion comprises a central area having a large surface area.
5. A seat according to claim 4 wherein the pelvic support portion further includes a downwardly extending member, at the lower region of said pel-, ic support portion.
6. A seat according to claim 4or 5 wherein the pelvic support portion curves outwardly of the seat, with a radius of curvature greater than substantially 0.01m.
7. A seat according to claim 6 wherein the radius of curvature of the pelvic is greater than substantially 0.1m.
8. A seat according to claim 6 or 7 wherein the pelvic support portion is substantially planar.
4 1
9 9. A seat 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.
10. A seat according to claim 9 wherein the front area is curved and has a large surface area.
11. A seat according to claim 9 or 10 wherein the front area of the leg support region curves outwardly, with a radius of curvature greater than substantially 0.01m.
12. A seat according to claim 11 wherein the radius of curvature of the leg support region is substantially 0.05m.
13. A seat according to claim 11 or 12 wherein the leg support region is substantially planar.
14. A seat according to any of claims 9 to 13 wherein the leg support portion extends downwardly to define a recess to receive a mounting for the scat.
15. A seat substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0000976A GB2342036B (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 |
GB9708895A GB2313047B (en) | 1996-05-18 | 1997-05-02 | Improvements in or relating to seats |
GB0000976A GB2342036B (en) | 1996-05-18 | 1997-05-02 | Improvements in or relating to seats |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0000976D0 GB0000976D0 (en) | 2000-03-08 |
GB2342036A true GB2342036A (en) | 2000-04-05 |
GB2342036B GB2342036B (en) | 2000-05-17 |
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 |
GB0000978A Expired - Fee Related GB2342037B (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 |
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 |
GB0000978A Expired - Fee Related GB2342037B (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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012108506B4 (en) * | 2012-09-12 | 2024-03-28 | Adient Us Llc | Motor vehicle bucket seat |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1348873A (en) * | 1972-02-11 | 1974-03-27 | Ford Motor Co | Motor vehicle seat |
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 |
GB2087226B (en) * | 1980-09-04 | 1984-12-05 | Transport The Minister Of | Shock absorbing seat |
US4500137A (en) * | 1982-01-21 | 1985-02-19 | Morehouse Laurence E | Physiological chair |
SE451108B (en) * | 1983-08-10 | 1987-09-07 | Saab Scania Ab | SEAT PLATE |
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 | ||
DE3630503A1 (en) * | 1986-09-08 | 1988-03-10 | Girsberger Holding Ag | CHAIR |
DE8627482U1 (en) * | 1986-10-15 | 1989-07-06 | Völkle, Rolf, 7298 Loßburg | Armchair |
ES1006827Y (en) * | 1988-06-23 | 1989-08-16 | Industrias Esteban, S.A. | VEHICLE SEAT. |
DE4211964C2 (en) * | 1992-04-09 | 1995-11-09 | Daimler Benz Ag | Deformation body designed as a corrugated tube |
US5597203A (en) * | 1994-06-14 | 1997-01-28 | Board Of Trustees Operating Michigan State University | Seat with biomechanical articulation |
FR2721488B1 (en) * | 1994-06-22 | 1996-09-06 | Albert Palanque | Sitting device with numerous adjustment possibilities. |
GB2302270A (en) * | 1995-06-16 | 1997-01-15 | Inst Of Occupational Safety & Health Council Of Labor Affairs | Work chair |
-
1997
- 1997-05-02 GB GB0000982A patent/GB2342038B/en not_active Expired - Fee Related
- 1997-05-02 GB GB0000978A patent/GB2342037B/en not_active Expired - Fee Related
- 1997-05-02 GB GB0000976A patent/GB2342036B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
Also Published As
Publication number | Publication date |
---|---|
GB2342038A (en) | 2000-04-05 |
GB0000982D0 (en) | 2000-03-08 |
GB0000978D0 (en) | 2000-03-08 |
GB2342038B (en) | 2000-10-18 |
GB0000976D0 (en) | 2000-03-08 |
GB2342036B (en) | 2000-05-17 |
GB2342037A (en) | 2000-04-05 |
GB2342037B (en) | 2000-07-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20020502 |