WO2005100085A1 - Seat suspension system - Google Patents

Seat suspension system Download PDF

Info

Publication number
WO2005100085A1
WO2005100085A1 PCT/GB2005/001433 GB2005001433W WO2005100085A1 WO 2005100085 A1 WO2005100085 A1 WO 2005100085A1 GB 2005001433 W GB2005001433 W GB 2005001433W WO 2005100085 A1 WO2005100085 A1 WO 2005100085A1
Authority
WO
WIPO (PCT)
Prior art keywords
top portion
arm
base portion
arms
pair
Prior art date
Application number
PCT/GB2005/001433
Other languages
French (fr)
Inventor
David Moorhouse
Phillip Britton
Original Assignee
Kab Seating Limited
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 Kab Seating Limited filed Critical Kab Seating Limited
Priority to CN200580011494.2A priority Critical patent/CN1950238B/en
Priority to JP2007507843A priority patent/JP4922922B2/en
Priority to US10/599,917 priority patent/US7854480B2/en
Priority to AT05734485T priority patent/ATE481266T1/en
Priority to DE602005023595T priority patent/DE602005023595D1/en
Priority to EP05734485A priority patent/EP1740411B1/en
Publication of WO2005100085A1 publication Critical patent/WO2005100085A1/en
Priority to US12/974,201 priority patent/US8177300B2/en

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
    • B60N2/50—Seat suspension devices
    • B60N2/54—Seat suspension devices using mechanical springs
    • B60N2/544—Compression or tension springs
    • 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
    • B60N2/50—Seat suspension devices
    • B60N2/505—Adjustable suspension including height adjustment
    • 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
    • B60N2/50—Seat suspension devices
    • B60N2/506—Seat guided by rods
    • B60N2/508—Scissors-like structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/48—Upholstered article making
    • Y10T29/481—Method

Definitions

  • the present invention relates to a seat suspension system, particularly for use in vehicles seats, such as driving seats.
  • the driving seat is provided with a suspension system.
  • the suspension system is designed to isolate low frequency vibrations, which can have adverse effects on the well being of the driver, for example causing back or kidney problems, and which can also affect the driver's control of the vehicle.
  • suspension systems In existence and these known systems generally comprise a mechanical portion, which allows the seat to move up and down with motion of the vehicle and an integral spring element, and usually a damper, to isolate vibrations from the vehicle and thus prevent, or reduce the amount of, vibrations reaching the driver.
  • the present invention provides a suspension system for a vehicle seat comprising: a top portion; a first part having a base portion, means to receive the top portion and means to allow movement of the base portion and top portion towards and away from each other; a second part comprising a spring element adapted in use to control movement of the base portion and top portion towards and away from each other; and wherein the top portion and the second part are releasably connected to the first part.
  • the advantages of the present suspension system are tta-at the manufacturing process is more flexible and the type of spring need not be decided until late in the manufacture process. Replacement of parts suffering from wear can be carried out without needing to discard the complete unit and the customer has more flexibility in the system being able to change the top portion or components of the system as required.
  • the top portion is provided with an upper surface and a. lower surface and the top portion is adapted to receive a seat base on the upper surface.
  • the base portion is provided with an upper surface and a lower surface and is adapted to be secured to a vehicle with the lower surface contacting the vehicle.
  • the means to allow the base portion and the top portion to move towards and away from each may be any suitable means.
  • the top portion and the base portion may be secured to each other by the provision of at least one pair, preferably two pairs, of pivotally connected arms .
  • a first arm in each pair preferably has one end pivotally secured to the base portion and a second arm in each pair preferably has one end releasably pivotally secured to the top portion.
  • the free end of each second arm is provided with means, such as a. roller, slides or a swinging link, to allow it to move relative to a surface, preferably the upper surface, of the base portion.
  • the free end of each first arm is provided with means, such as a roller, slides or a swinging link, to allow it to move relative to a surface, preferably a lower surface of the top portion. This arrangement allows movement of the top portion and base portion towards and away from each other.
  • the spring element may be an air spring.
  • the air spring may be positioned between the base portion and one of tlie first and second arms to control movement of the arms relative to th-e base portion.
  • the air spring may be positioned between toe first and second arms of the at least one pair of arms to control movement of the arms relative to each other.
  • the air spring may be positioned oa a, or between two, suitable mountings positioned between the first arms or the second arms of a pair of arms.
  • the spring element may comprise one or- more mechanical tension springs.
  • the or each mechanical tension spring preferably has a first and a second end wherein the first end is adapted to act on the free end of the first arm.
  • the second end of the o ⁇ r each mechanical tension spring is secured to the top portion.
  • the tension in the spring element can be adjusted by any suitable means to allow for different drivers.
  • the top portion is releasably connected to the first part.
  • the top part may be releasably connected to the first part b>y any suitable means.
  • the top portion is preferably generally rectangular having a pair of opposing short sides and a pair of opposing long sides.
  • the top portion is provided with one portion adapted to be releasably secured to each second arm of the first part.
  • the or- each portion adapted to be releasably secured to each second arm is preferably positioned on a long side of the top portion close to the point wheire the long side meets one of the short sides. Where there are two po-rtions provided they are preferably positioned on opposing long sides close to where the long sides meet the same short side.
  • the or each portion adapted to be releasably secured to each second arm is preferably a wing extending from the opposing long side.
  • the or each wing is preferably provided with an aperture therethrough to receive a_ pivot bolt.
  • a corresponding aperture is provided through the or each- second arm of the first part.
  • a pivot bolt is provided of a suitable size to pass through the aperture in each wing and in each second arm.
  • the top portion is further provided with means to receive the free end of the or each first arm of the first part.
  • the means to receive the free end of the or each first arm is positioned close to the opposite short side distal from the or each portion adapted to be releasably secured to the second arm.
  • the means to receive the free end of the or each first arm preferably comprises one or more channels in which the free end of the or each first arm is received.
  • the or each channel is suitably sized to allow movement of the free end of the or each first arm over the lower surface of the top portion within the or each channel as the top part and base part move towards and away from each other.
  • the top portion is first positioned such that the free end of the or each first arm is received in the or each channel and then the second arm- is secured to the top plate by means of the pivot bolt passing through the or each portion of the top plate and the or each second arm.
  • the top part is preferably provided with means to receive one portion of an air spring, preferably mounted on the lower surface of the top part.
  • the base part may be provided with means to receive one portion of an air- spring, preferably mounted on the upper surface of the base part.
  • a means to receive a. second portion of an air spring which is releasably secured to the first or second arm or between the first arms or the second arms, preferably by use of a nut and bolt passing through the means to receive a second portion of an air spring and the first or second arms.
  • the or each spring has one end secured to the top portion by an appropriate means such as a hooked portion received by a corresponding bar mounted on the top portion.
  • a second end of the or each spring is releasably secured to or between the free ends of the first arms.
  • a bar may be provided between the free ends of the pair of first arms.
  • the second end of the or each spring is provided with a hooked portion adapted in use to be received by the bar extending between the free ends of the first arms.
  • the bar may be movable along the free end of the first arm to adjust the tension in the spring.
  • the second end of the or each spring may be received by an aperture provided in the free end of each first arm.
  • the means to receive the top part and to allow the base portion and the top portion to move towards and away from each other may comprise one or more bars designed to extend from the base portion and receive the top portion and being pivotally secured directly between the top portion and the base portion, or by pivotal linkages.
  • a spring element may be placed between the top portion and base portion; the spring element may be an air spring, a compression spring or a tension spring.
  • Figure 1 shows a perspective view of a first part of a device of the present invention
  • Figure 2 shows a perspective view of a top portion according to a first embodiment of the present invention
  • Figure 3 shows a perspective view of a top portion accordin to a second embodiment of the present invention.
  • Figure 1 shows a first part 1 of a seat suspension system.
  • the first part comprises a base portion 2, which is generally rectangular in shape having a pair of opposing long sides 2a, 2b and a pair of opposing short sides 2c, 2d.
  • each pair comprising a first arm 3 and a second arm 4 pivotally secured together at their mid points to form a generally "X" shape.
  • the first arm 3 of each pair has a first end 3a pivotally secured to the base portion 2 at the corners where the long sides 2a, 2b meet the short side 2d.
  • the free ends 3b of the first arms 3 have an elongate bar 5 passing between them.
  • Each end of the bar 5 is provided with a roller 6a, 6b.
  • Each second arm 4 has a free end 4a provided with a roller 7a (not shown) , 7b that contacts and is movable over the base portion 2.
  • the other ends 4b of the second arms are provided with an elongate h ollow tube 8 and a bar 20 extending between them.
  • the first part 1 can be moved about the pivot joining the first and s econd arms of each pair by movement of the rollers 7a, 7b provided on the free ends of the second arms 4a, 4b over the base portion 2.
  • Figure 2 shows a first embodiment of a top portion 9 of the present invention for releasable attachment to the first part 1 described above * .
  • the top portion 9 is generally rectangular in shape having a pair of opposing long sides 9a, 9b and a pair of opposing short sides 9c, 9d.
  • A. set of four tension springs 10 is provided extending substantially from one short side 9c to the other 9d.
  • the springs 10 are secured substantially a.t short side 9c by the provision of a bar (not shown) extending between the two long sides close to short side 9c over which hooked portions of the springs are attached (not shown) .
  • This bar may be movable to adjust the tension in the set of springs 10 when in use.
  • the other ends of the springs 10 are provided with hooked portions whicli are adapted in use to be secured over the bar 20 extending between the pivotally secured ends 4b of the second arms 4 when the top portion i s attached to the first part.
  • the top portion 9 has two wings 11a, l ib depending from the long side s 9a, 9b positioned close to the short side 9d. Each wing has an aperture therethrough.
  • the top portion 9 has a return nose portion 12 depending from the opposite short side 9c sized to receive the free ends 3b of first arms 3 of the first part 1 and to allow movement of the rollers 6a, 6b within the return nose portion.
  • the return nose portion 12 is positioned over and receiving the free end portions 3b of the first arms 3.
  • the springs 10 are secured over bar 20 of part 1 , this may be done by moving the movable bar towards the end 9d of the top portion 9 and then tension can be applied to the spring s by moving the movable bar towards the end 9c once the springs are in position over the bar 20 and the top portion is in place.
  • the top portion ⁇ is then releasably secured to the first part 1 by passing a pi ⁇ ot bolt 13 through the apertures in the wings 11a, lib and the hollow tube 8.
  • the tension in the set of springs 10 controls movement of the top portion 9 towards and away from the base portion 2 and isolates vibrations from the vehicle to the seat carried by the suspension system.
  • One or more dampers and sets of bearings, not shown, are also included as and where necessary.
  • FIG. 3 shows a top portion according to a second embodiment wherein like numbers indicate like parts.
  • the top portion 9 of the second embodiment is not provided with a set of springs 10 but instead has an air spring 14 received by a first mounting portion, not shown, depending from the lower surface of the top portion 9 and sized to receive a portion of an air spring 14.
  • the air spring 14 is secured to the top portion 9 by means of a screw 21 received by an aperture 22 in the top portion 9.
  • a second mounting portion 15 is provided to be releasably secured between the second arms 4 by means of nuts and bolts passing t-tirough the mounting portion 15 and apertures 16 provided in the arms 4.
  • the second mounting portion 15 is secured in place between the second arms 4 and air spring 14 is placed on the second mounting 15 such that when the top portion is secured to the first part 1, as described in relation to figure 2, the air spring is positioned between the first mounting and the second mounting 15 and acts between the top portion 1 and the arms 4 to control movement of the top portion 1 towards and away from the base portion 2 and to isolate vibrations.
  • the air spring 14 is secured in position by means of screw 21.

Abstract

The present invention relates to a suspension system for a vehicle seat. The system comprises a top portion (9) and a first part (1) having a base portion (2), means (3b, 20) to receive the top portion and means (3, 4) to allow movement of the base portion (2) and top portion (9) towards and away from each other. The system further comprises a second part consisting of a spring element (10, 14) adapted in use to control movement of the base portion (2) and top portion (9) towards and away from each other. The top portion (9) and the second part (10, 14) are, in addition, releasably connected (13, 11a, 20) to the first part (1). This suspension system allows for flexibility in the manufacturing process and the replacement of parts.

Description

SEAT SUSPENSION SYSTEM
The present invention relates to a seat suspension system, particularly for use in vehicles seats, such as driving seats.
In vehicles, particularly working vehicles such as trucks, buses, tractors construction and earth moving equipment, fork-lift trucks and industrial vehicles, where drivers spend a large amount of time in the driving seat, and often driving long distances or over uneven ground, the driving seat is provided with a suspension system. The suspension system is designed to isolate low frequency vibrations, which can have adverse effects on the well being of the driver, for example causing back or kidney problems, and which can also affect the driver's control of the vehicle.
There are a number of suspension systems in existence and these known systems generally comprise a mechanical portion, which allows the seat to move up and down with motion of the vehicle and an integral spring element, and usually a damper, to isolate vibrations from the vehicle and thus prevent, or reduce the amount of, vibrations reaching the driver.
The present invention provides a suspension system for a vehicle seat comprising: a top portion; a first part having a base portion, means to receive the top portion and means to allow movement of the base portion and top portion towards and away from each other; a second part comprising a spring element adapted in use to control movement of the base portion and top portion towards and away from each other; and wherein the top portion and the second part are releasably connected to the first part. The advantages of the present suspension system are tta-at the manufacturing process is more flexible and the type of spring need not be decided until late in the manufacture process. Replacement of parts suffering from wear can be carried out without needing to discard the complete unit and the customer has more flexibility in the system being able to change the top portion or components of the system as required.
Preferably the top portion is provided with an upper surface and a. lower surface and the top portion is adapted to receive a seat base on the upper surface. Preferably the base portion is provided with an upper surface and a lower surface and is adapted to be secured to a vehicle with the lower surface contacting the vehicle.
The means to allow the base portion and the top portion to move towards and away from each may be any suitable means.
For example, the top portion and the base portion may be secured to each other by the provision of at least one pair, preferably two pairs, of pivotally connected arms . A first arm in each pair preferably has one end pivotally secured to the base portion and a second arm in each pair preferably has one end releasably pivotally secured to the top portion. The free end of each second arm is provided with means, such as a. roller, slides or a swinging link, to allow it to move relative to a surface, preferably the upper surface, of the base portion. The free end of each first arm is provided with means, such as a roller, slides or a swinging link, to allow it to move relative to a surface, preferably a lower surface of the top portion. This arrangement allows movement of the top portion and base portion towards and away from each other.
In a first embodiment the spring element may be an air spring. The air spring may be positioned between the base portion and one of tlie first and second arms to control movement of the arms relative to th-e base portion. Alternatively the air spring may be positioned between toe first and second arms of the at least one pair of arms to control movement of the arms relative to each other. The air spring may be positioned oa a, or between two, suitable mountings positioned between the first arms or the second arms of a pair of arms.
In a second embodiment the spring element may comprise one or- more mechanical tension springs. The or each mechanical tension spring preferably has a first and a second end wherein the first end is adapted to act on the free end of the first arm. The second end of the oτr each mechanical tension spring is secured to the top portion.
In both embodiments the tension in the spring element can be adjusted by any suitable means to allow for different drivers.
In both embodiments the top portion is releasably connected to the first part. The top part may be releasably connected to the first part b>y any suitable means. The top portion is preferably generally rectangular having a pair of opposing short sides and a pair of opposing long sides.
Most preferably the top portion is provided with one portion adapted to be releasably secured to each second arm of the first part. The or- each portion adapted to be releasably secured to each second arm is preferably positioned on a long side of the top portion close to the point wheire the long side meets one of the short sides. Where there are two po-rtions provided they are preferably positioned on opposing long sides close to where the long sides meet the same short side.
The or each portion adapted to be releasably secured to each second arm is preferably a wing extending from the opposing long side. The or each wing is preferably provided with an aperture therethrough to receive a_ pivot bolt. A corresponding aperture is provided through the or each- second arm of the first part. A pivot bolt is provided of a suitable size to pass through the aperture in each wing and in each second arm.
The top portion is further provided with means to receive the free end of the or each first arm of the first part. Preferably the means to receive the free end of the or each first arm is positioned close to the opposite short side distal from the or each portion adapted to be releasably secured to the second arm. The means to receive the free end of the or each first arm preferably comprises one or more channels in which the free end of the or each first arm is received. The or each channel is suitably sized to allow movement of the free end of the or each first arm over the lower surface of the top portion within the or each channel as the top part and base part move towards and away from each other.
In use the top portion is first positioned such that the free end of the or each first arm is received in the or each channel and then the second arm- is secured to the top plate by means of the pivot bolt passing through the or each portion of the top plate and the or each second arm.
In the first embodiment, where an air spring is provided, the top part is preferably provided with means to receive one portion of an air spring, preferably mounted on the lower surface of the top part. Alternatively the base part may be provided with means to receive one portion of an air- spring, preferably mounted on the upper surface of the base part.
In this embodiment there is preferably provided a means to receive a. second portion of an air spring, which is releasably secured to the first or second arm or between the first arms or the second arms, preferably by use of a nut and bolt passing through the means to receive a second portion of an air spring and the first or second arms.
In the second embodiment, where at least one mechanical tension spring is provided, the or each spring has one end secured to the top portion by an appropriate means such as a hooked portion received by a corresponding bar mounted on the top portion. A second end of the or each spring is releasably secured to or between the free ends of the first arms. Where there are a pair of first and second arms a bar may be provided between the free ends of the pair of first arms. Preferably the second end of the or each spring is provided with a hooked portion adapted in use to be received by the bar extending between the free ends of the first arms. The bar may be movable along the free end of the first arm to adjust the tension in the spring. Alternatively the second end of the or each spring may be received by an aperture provided in the free end of each first arm.
In a third embodiment the means to receive the top part and to allow the base portion and the top portion to move towards and away from each other may comprise one or more bars designed to extend from the base portion and receive the top portion and being pivotally secured directly between the top portion and the base portion, or by pivotal linkages. A spring element may be placed between the top portion and base portion; the spring element may be an air spring, a compression spring or a tension spring.
An embodiment of the present invention will now be described with reference to the accompanying drawings in which: Figure 1 shows a perspective view of a first part of a device of the present invention; Figure 2 shows a perspective view of a top portion according to a first embodiment of the present invention; and
Figure 3 shows a perspective view of a top portion accordin to a second embodiment of the present invention.
Figure 1 shows a first part 1 of a seat suspension system. The first part comprises a base portion 2, which is generally rectangular in shape having a pair of opposing long sides 2a, 2b and a pair of opposing short sides 2c, 2d.
Two pairs of arms are provided with each pair comprising a first arm 3 and a second arm 4 pivotally secured together at their mid points to form a generally "X" shape.
The first arm 3 of each pair has a first end 3a pivotally secured to the base portion 2 at the corners where the long sides 2a, 2b meet the short side 2d.
The free ends 3b of the first arms 3 have an elongate bar 5 passing between them. Each end of the bar 5 is provided with a roller 6a, 6b.
Each second arm 4 has a free end 4a provided with a roller 7a (not shown) , 7b that contacts and is movable over the base portion 2. The other ends 4b of the second arms are provided with an elongate h ollow tube 8 and a bar 20 extending between them.
The first part 1 can be moved about the pivot joining the first and s econd arms of each pair by movement of the rollers 7a, 7b provided on the free ends of the second arms 4a, 4b over the base portion 2. Figure 2 shows a first embodiment of a top portion 9 of the present invention for releasable attachment to the first part 1 described above* . The top portion 9 is generally rectangular in shape having a pair of opposing long sides 9a, 9b and a pair of opposing short sides 9c, 9d. A. set of four tension springs 10 is provided extending substantially from one short side 9c to the other 9d. The springs 10 are secured substantially a.t short side 9c by the provision of a bar (not shown) extending between the two long sides close to short side 9c over which hooked portions of the springs are attached (not shown) . This bar may be movable to adjust the tension in the set of springs 10 when in use.
The other ends of the springs 10 are provided with hooked portions whicli are adapted in use to be secured over the bar 20 extending between the pivotally secured ends 4b of the second arms 4 when the top portion i s attached to the first part.
The top portion 9 has two wings 11a, l ib depending from the long side s 9a, 9b positioned close to the short side 9d. Each wing has an aperture therethrough.
The top portion 9 has a return nose portion 12 depending from the opposite short side 9c sized to receive the free ends 3b of first arms 3 of the first part 1 and to allow movement of the rollers 6a, 6b within the return nose portion.
In use the return nose portion 12 is positioned over and receiving the free end portions 3b of the first arms 3. The springs 10 are secured over bar 20 of part 1 , this may be done by moving the movable bar towards the end 9d of the top portion 9 and then tension can be applied to the spring s by moving the movable bar towards the end 9c once the springs are in position over the bar 20 and the top portion is in place. The top portion θ is then releasably secured to the first part 1 by passing a pi^ot bolt 13 through the apertures in the wings 11a, lib and the hollow tube 8.
The tension in the set of springs 10 controls movement of the top portion 9 towards and away from the base portion 2 and isolates vibrations from the vehicle to the seat carried by the suspension system. One or more dampers and sets of bearings, not shown, are also included as and where necessary.
Figure 3 shows a top portion according to a second embodiment wherein like numbers indicate like parts. The top portion 9 of the second embodiment is not provided with a set of springs 10 but instead has an air spring 14 received by a first mounting portion, not shown, depending from the lower surface of the top portion 9 and sized to receive a portion of an air spring 14. The air spring 14 is secured to the top portion 9 by means of a screw 21 received by an aperture 22 in the top portion 9. A second mounting portion 15 is provided to be releasably secured between the second arms 4 by means of nuts and bolts passing t-tirough the mounting portion 15 and apertures 16 provided in the arms 4.
In use the second mounting portion 15 is secured in place between the second arms 4 and air spring 14 is placed on the second mounting 15 such that when the top portion is secured to the first part 1, as described in relation to figure 2, the air spring is positioned between the first mounting and the second mounting 15 and acts between the top portion 1 and the arms 4 to control movement of the top portion 1 towards and away from the base portion 2 and to isolate vibrations. The air spring 14 is secured in position by means of screw 21.

Claims

1. A suspension system for a vehicle seat comprising: a top portion; a first part having a base portion, means to receive the top portion and means to allow movement of the base portion and top portion towards and away from each other; a second part comprising a spring element adapted in use to control movement of the base portion and top portion towards and away from each other; and wherein the top portion and the second part are releasably connected to the first part.
2. A system according to Claim 1 wherein the top portion is provided with an upper surface and a lower surface.
3. A system according to Claim 1 or Claim 2 wherein the base portion is provided with an upper surface and a lower surface.
4. A system according to any preceding claim wherein the top portion and the base portion are secured to each other by the provision of at least one pair of pivotally connected arms.
5. A system according to Claim 4 wherein:
a first arm in each pair has one end pivotally secured to the base portion and a second arm in each pair has one end releasably pivotally secured to the top portion; the free end of each second arm is provided with means to allow it to move relative to an upper surface of the base portion; and the free end of each first arm is provided with means to allow it to move relative to a lower surface of the top portion.
6. A system according to any preceding claim wherein the spring element is an air spring.
7. A system according to Claim 6, when dependent on Claim 5, wherein the air spring is positioned between the base portion and one of the first and second arms to control movement of the arms relative to the base portion.
8. A system according to Claim 6 wherein the air spring is positioned between the first and second arms of the at least one pair of arms to control movement of the arms relative to each other.
9. A system according to Claim 7 or 8 wherein the air spring is positioned on a, or between two, suitable mountings positioned fcetween the first arms or the second arms of a pair of arms.
10. A system according to any of Claims 1 to 5 wherein the spring element comprises one or more mechanical tension springs.
11. A system according to Claim 10, when dependent on Claim 5, wherein the or each mechanical tension spring has a first and a second end and wherein the first end is adapted to act on the free end of the first arm and the second end of the or each mechanical tension spring is secured to the top portion.
12. A system according to any preceding claim wherein the top portion is generally rectangular having a pair of opposing short sides and a pair of opposing long sides and the top portion is provided with one portion adapted to be releasably secured to each second arm of the first part.
13. A system according to Claim 12 wherein the or each portion adapted to be releasably secured to each second arm is preferably a wing extending from the opposing long sides and the or each wing is provided with an aperture therethrough.
14. A system according to Claim 13 wherein a corresponding aperture is provided through the or each second arm of the first part.
15. A system according to Claim 14 wherein a pivot bolt is provided of a suitable size to pass through the aperture in each wing and in each second arm.
16. A system according to any preceding claim whe-rein the means to receive the free end of the or each first arm comprises one or more channels in which the free end of the or each first arm is received and the or each channel is suitably sized to allow movement of the free end of the or each first arm over a lower surface of the top portion within the or each channel as the top part and base part move towards and away from each other.
17. A system according to Claim 1 wherein the means to receive the top part and to allow the base portion and the top portion- to move towards and away from each other comprise one or more bars designed to extend from the base portion and receive the top portion and being pivotally secured directly between the top portion and the base portion, or by pivotal linkages.
18. A system according to Claim 17 wherein a spring element is positioned to act in use between the top portion and base portion.
19. A suspension system substantially as described he-rein and with re erence to the drawings .
PCT/GB2005/001433 2004-04-15 2005-04-15 Seat suspension system WO2005100085A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN200580011494.2A CN1950238B (en) 2004-04-15 2005-04-15 Seat suspension system
JP2007507843A JP4922922B2 (en) 2004-04-15 2005-04-15 Seat suspension system
US10/599,917 US7854480B2 (en) 2004-04-15 2005-04-15 Seat suspension system
AT05734485T ATE481266T1 (en) 2004-04-15 2005-04-15 SEAT SUSPENSION SYSTEM
DE602005023595T DE602005023595D1 (en) 2004-04-15 2005-04-15 SEAT SUSPENSION SYSTEM
EP05734485A EP1740411B1 (en) 2004-04-15 2005-04-15 Seat suspension system
US12/974,201 US8177300B2 (en) 2004-04-15 2010-12-21 Seat suspension system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0408366.3A GB0408366D0 (en) 2004-04-15 2004-04-15 Seat suspension system
GB0408366.3 2004-04-15

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/974,201 Continuation US8177300B2 (en) 2004-04-15 2010-12-21 Seat suspension system

Publications (1)

Publication Number Publication Date
WO2005100085A1 true WO2005100085A1 (en) 2005-10-27

Family

ID=32320847

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/001433 WO2005100085A1 (en) 2004-04-15 2005-04-15 Seat suspension system

Country Status (8)

Country Link
US (2) US7854480B2 (en)
EP (1) EP1740411B1 (en)
JP (1) JP4922922B2 (en)
CN (2) CN102390302A (en)
AT (1) ATE481266T1 (en)
DE (1) DE602005023595D1 (en)
GB (1) GB0408366D0 (en)
WO (1) WO2005100085A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0408366D0 (en) * 2004-04-15 2004-05-19 Kab Seating Ltd Seat suspension system
US8413942B2 (en) 2008-04-11 2013-04-09 Agco Corporation Adjustable suspension system for a seat
DE102008023120B4 (en) * 2008-05-07 2010-06-10 Keiper Gmbh & Co. Kg Vehicle seat, in particular commercial vehicle seat
US8585004B1 (en) 2009-01-26 2013-11-19 Atwood Mobile Products Llc Air ride seat pedestal with independent height adjustment
DE102013110370B4 (en) 2013-06-04 2014-12-11 Grammer Ag vehicle seat
DE102013110924B4 (en) 2013-10-01 2018-02-08 Grammer Ag Vehicle with force-controlled damper with control valve
DE102013110926B4 (en) * 2013-10-01 2019-09-05 Grammer Aktiengesellschaft Vehicle seat or vehicle cabin with a suspension device and utility vehicle
DE102013110920B4 (en) 2013-10-01 2018-08-16 Grammer Ag Vehicle seat with force-controlled damper (2-pipe damper)
DE102013110923B4 (en) * 2013-10-01 2019-07-04 Grammer Ag Vehicle seat or vehicle cabin with a suspension device and utility vehicle
DE102013021561B4 (en) 2013-12-16 2020-09-03 Grammer Ag Vehicle seat with a horizontally movable seat surface to accommodate a person
DE102014109191B8 (en) * 2014-07-01 2018-12-20 Grammer Aktiengesellschaft Suspension system for vehicle seats and method for springing vehicle seat parts
US10675999B2 (en) * 2016-10-17 2020-06-09 Clearmotion Acquisition I Llc Active vibration isolation system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438203A1 (en) * 1978-10-04 1980-04-30 Poudres & Explosifs Ste Nale DEVICE FOR SUSPENDING OBJECTS FOR VEHICLES AND VIBRATORY PLATFORMS
GB2169792A (en) * 1985-01-09 1986-07-23 Tachikawa Spring Co Vehicle seat suspension
US4702454A (en) * 1984-03-12 1987-10-27 Ikeda Bussan Co. Ltd. Buffer device for use to the seats of vehicles
EP0457520A2 (en) * 1990-05-16 1991-11-21 Kab Seating Limited Seat suspension system

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109621A (en) * 1960-10-06 1963-11-05 Bostrom Corp Spring suspension for seats
US3233859A (en) * 1964-11-16 1966-02-08 Brubaker Sandra Beoletto Resilient mounting for vehicle operator's seat
US3752432A (en) * 1970-12-31 1973-08-14 Universal Oil Prod Co Vehicle seats
US3788697A (en) * 1972-04-06 1974-01-29 Caterpillar Tractor Co Vehicle seat
DE2753105A1 (en) * 1977-11-29 1979-06-07 Isringhausen Geb AIR-SUSPENSION VEHICLE SEAT
JPS59118631U (en) * 1983-01-31 1984-08-10 三菱農機株式会社 Seat longitudinal adjustment device for work vehicles
US4913482A (en) * 1985-09-30 1990-04-03 Mitsubishi Denki Kabushiki Kaisha Seat suspension system for automotive vehicle or the like
JPS6334992A (en) 1986-07-29 1988-02-15 Nec Corp Semiconductor laser device
US4856763A (en) * 1988-05-19 1989-08-15 Sears Manufacturing Company Mechanical seat suspension with concentric cam surfaces
US5125631A (en) * 1989-02-01 1992-06-30 Sears Manufacturing Company Seat suspension with cam support member and spring assisted height adjustment
US4946145A (en) * 1989-08-29 1990-08-07 Tachi-S Co., Ltd. Air suspension device for vehicle seat
US5222709A (en) * 1990-04-13 1993-06-29 Rosdon Engineering And Manufacturing Pty. Ltd. Vehicle seat suspension unit
JPH05139197A (en) * 1991-07-31 1993-06-08 Tachi S Co Ltd Seat suspension device
US5179355A (en) * 1991-11-18 1993-01-12 Elantec Slew control in current feedback amplifiers
US5176355A (en) * 1991-12-09 1993-01-05 Carter John W Control for height of a seat
US5364060A (en) * 1993-03-19 1994-11-15 Milsco Manufacturing Company Adjustable mechanized seat suspension
US5580027A (en) * 1995-06-07 1996-12-03 Sears Manufacturing Company Cable drive mechanical seat suspension
US5794911A (en) * 1996-02-05 1998-08-18 Milsco Manufacturing Company Adjustable vehicle seat suspension
AU2179297A (en) * 1996-04-08 1997-10-29 Delta Tooling Co., Ltd. Magnetic spring having damping characteristics and vibration mechanism having same
US5799922A (en) * 1996-10-15 1998-09-01 Seating Technologies, Inc. Low profile seat suspension
US5913568A (en) * 1997-09-30 1999-06-22 Brightbill; Stephen T. Two platform motion seat
GB0408366D0 (en) * 2004-04-15 2004-05-19 Kab Seating Ltd Seat suspension system
US7413158B1 (en) * 2004-11-08 2008-08-19 Burer Peter J Shock absorbing platform with dampening means

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438203A1 (en) * 1978-10-04 1980-04-30 Poudres & Explosifs Ste Nale DEVICE FOR SUSPENDING OBJECTS FOR VEHICLES AND VIBRATORY PLATFORMS
US4702454A (en) * 1984-03-12 1987-10-27 Ikeda Bussan Co. Ltd. Buffer device for use to the seats of vehicles
GB2169792A (en) * 1985-01-09 1986-07-23 Tachikawa Spring Co Vehicle seat suspension
EP0457520A2 (en) * 1990-05-16 1991-11-21 Kab Seating Limited Seat suspension system

Also Published As

Publication number Publication date
US7854480B2 (en) 2010-12-21
JP4922922B2 (en) 2012-04-25
ATE481266T1 (en) 2010-10-15
US20110089309A1 (en) 2011-04-21
CN102390302A (en) 2012-03-28
GB0408366D0 (en) 2004-05-19
CN1950238A (en) 2007-04-18
JP2007532399A (en) 2007-11-15
DE602005023595D1 (en) 2010-10-28
CN1950238B (en) 2012-02-08
US8177300B2 (en) 2012-05-15
EP1740411B1 (en) 2010-09-15
EP1740411A1 (en) 2007-01-10
US20070278377A1 (en) 2007-12-06

Similar Documents

Publication Publication Date Title
US8177300B2 (en) Seat suspension system
US5967597A (en) Vehicle cab suspension
KR0137575B1 (en) Parallelogram lift axle suspension system with a control for axle caster adjustment
US4995636A (en) Trailing arm modular axle suspension unit
JP3200435B2 (en) Suspension system for vehicle wheel set
US4267896A (en) Method and apparatus for aligning automobile suspension members
KR101045453B1 (en) Low profile seat suspension
EP1491370A2 (en) Vehicle suspension system with a leaf spring and a rubber spring
EP0873905A3 (en) Adjustable vehicle seat suspension
EP1234694A2 (en) System for analyzing a suspension system
US6540038B2 (en) Vehicle cab suspension system
CN109941055A (en) Multi link axis for vehicle
CA2485811A1 (en) Multi-piece axle and suspension
JPH0492709A (en) Mounting structure for suspension member
US3257123A (en) Spring suspension system for a vehicle
EP1707408A1 (en) Vehicle suspension systems
EP2052903A2 (en) Folding seats
US6916038B2 (en) Vehicle suspension system
DE102009025719A1 (en) Vehicle wheel suspension with a handlebar
KR20080054815A (en) Strut type suspension system for vehicle
EP2435264A1 (en) A suspension system with inclination stabilization
US2603481A (en) Stabilizer for vehicle springs
US3302941A (en) Auxiliary spring for automotive vehicles
JPH0544195Y2 (en)
KR100507470B1 (en) An ant-roll device of vehicles

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DPEN Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 2007507843

Country of ref document: JP

Ref document number: 200580011494.2

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

WWE Wipo information: entry into national phase

Ref document number: 2005734485

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2005734485

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 10599917

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 10599917

Country of ref document: US