WO2016042575A2 - Système de siège pivotant indirectement suspendu pour véhicules - Google Patents

Système de siège pivotant indirectement suspendu pour véhicules Download PDF

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Publication number
WO2016042575A2
WO2016042575A2 PCT/IN2015/000360 IN2015000360W WO2016042575A2 WO 2016042575 A2 WO2016042575 A2 WO 2016042575A2 IN 2015000360 W IN2015000360 W IN 2015000360W WO 2016042575 A2 WO2016042575 A2 WO 2016042575A2
Authority
WO
WIPO (PCT)
Prior art keywords
seat
seat assembly
vehicle
suspension
attached
Prior art date
Application number
PCT/IN2015/000360
Other languages
English (en)
Other versions
WO2016042575A3 (fr
Inventor
Abhay Damodar Hate
Original Assignee
Abhay Damodar Hate
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 Abhay Damodar Hate filed Critical Abhay Damodar Hate
Publication of WO2016042575A2 publication Critical patent/WO2016042575A2/fr
Publication of WO2016042575A3 publication Critical patent/WO2016042575A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/50—Seat suspension devices
    • B60N2/502—Seat suspension devices attached to the base of the seat
    • 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
    • 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

Definitions

  • the present invention relates to a comfortable seating system for vehicles, more specifically for those vehicles which experiences jerks, bumps and vibrations from the road when a vehicle is in motion.
  • the invention relates to a comfortable seating system which is indirectly suspended above the floor of a vehicle by means of inverted suspension mechanism attached to the upper horizontal bar of supporting frame of seat assembly or to the roof of a vehicle and also provides limited swivel movement to the occupant.
  • Comfort is very important criteria while moving on uneven road .surfaces, Existing seats in car or other vehicles are fixed rigidly to the floor of the vehicle as a result of which all the jerks, bumps, thuds and vibrations from road are directly transmitted to the occupants and it may lead to spinal column injury and many other health issues to them.
  • EP 2103478 discloses vehicle safety seat comprising a seating part and a backrest part, wherein the seat is adapted to be mounted on a vehicle, between a floor region and a roof region thereof, by means of a plurality of belts arranged above and below the seat.
  • the seat comprises a rigid frame which supports the seating part and the backrest part.
  • the plurality of belts comprises a pair of lower belts which are anchored to the lower end of the backrest part, on the opposite sides thereof, and are arranged to anchor the seat to the floor region of the vehicle, and a pair of upper belts which are anchored to the upper end of the backrest part, on the opposite sides thereof, and are arranged to anchor the seat to the roof region of the vehicle.
  • the lower belts or the upper belts are provided with suspension means , respectively, for allowing a controlled elastic elongation of those belts as a result of a tensile force applied thereto.
  • US 2010/0283298 discloses Safety seat for land vehicles, aircraft, and watercraft.
  • a seat portion frame forms a seat portion, and a backrest frame, connected to the seat portion frame and disposed at an angle thereto, forms a backrest.
  • Two vertical, vehicle-mounted retaining straps are disposed near the rear edge of the seat portion.
  • Each retaining strap is a strap loop mounted between vehicle- mounted anchors that are spaced vertically apart.
  • the strap loop has a front strap facing the safety seat, and a rear strap spaced from the front strap.
  • the front and rear straps are respectively alternating guided over an upper cross member of the backrest frame and, in the region of the seat portion frame, a lower cross member of the backrest frame such that when the strap loop is tensioned, the front and rear straps clamp the upper and lower cross members between them.
  • the backrest frame is suspended on at least one suspension strap secured to a further vehicle- mounted anchor above the safety seat.
  • the present invention holds an advantage of designing a seat assembly that absorbs and manages jerks, bumps, jolts or any form of sudden push that is applied to person on seat in a moving vehicle.
  • the occupant in moving vehicle exert generally three type of fundamental vibration modes; vertical (Y axis), lateral (X axis) and Forward/Zbackward (Z axis).
  • this invention is intended to overall improve the seating dynamics for the occupants in moving vehicles.
  • this invention is also very useful for the patients to be carried away in stretchers through fast moving ambulance.
  • a primary objective of the present invention is to provide a comfortable seat assembly for a vehicle.
  • Another objective of the present invention is to provide a vehicle seat assembly which provides ultimate safety to the person on seat.
  • Yet another objective of the invention is to provide a seat assembly which is easy to install and do not involve complicated mechanism.
  • Yet another objective of the invention is to provide modified mounting of existing seat assembly with all its original seat adjustments and also with existing seat- belt mechanism.
  • Yet another objective of the invention is to provide a seat assembly which is economic and long lasting.
  • Yet another objective is to provide a smooth ride to occupant which require extra care in terms of health/injured condition.
  • the present invention relates to a comfortable seating system for vehicles, more specifically for those vehicles which experiences jerks, jumps and vibrations from the road when a vehicle is in motion.
  • the invention relates to a comfortable seating system which is indirectly suspended above floor of the vehicle and attached to upper horizontal bar of the seat supporting frame or roof of a vehicle and also provides swivel movement to occupant.
  • the said assembly also allows seat to swivel some amount of lateral, forward and backward movement when vehicle is in motion or stops suddenly and runs on uneven road surface and at the same time vertical movement also referred as displacement when vehicle moves on uneven roads.
  • the present disclosure provides a swivel mechanism for vehicle seat with supporting frame comprising; means for securing to floor of the vehicle; means for suspensions; means for holding assembly to seat; means for swivel mechanism along with means for seat adjustment.
  • Figure 1 Perspective illustration of seat assembly
  • FIG. 1 Drawing of entire seat assembly.
  • FIG. 1 Drawing of side view of seat assembly in normal position.
  • FIG. 4 Drawing of side view of seat assembly with seat back now being tilted backward.
  • Figure 5 Drawing of conventional suspension system
  • Figure 6 Drawing of side view of two forks with curve arms, wherein A is upward fork and B is downward fork.
  • FIG. 7 Drawing of side view of an embodiment of suspension system, wherein A is showing view of suspension without load and B are showing view of suspension with load.
  • Figure 8 Drawing of side view of seat assembly for stretcher in an ambulance van.
  • Figure 9 Represent the Comparative graph based on vibration in Hz Vs speed of vehicle between two seating arrangements.
  • Figure 10 Represents the side view of encapsulated seat assembly as one of the embodiment of present invention.
  • Figure 1 1 Represents the perspective view of encapsulated seat assembly as one of the embodiment of present invention.
  • the present invention relates a comfortable ⁇ seat assembly for a vehicle comprising at least one means for securing to floor of the vehicle; at least one means for suspensions; at least one means for holding assembly to seat; at least one means for swivel mechanism and at least one means for seat adjustment, wherein the said seat assembly is indirectly suspended above the floor of vehicle and thus the occupant feels minimal effect of jerks/vibration with swivel movement.
  • the seat assembly comprises seat base frame (4), main frame (3) to be suspended; atleast one means for suspension (2) which is attached to roof by means of roof mounting (1), or by means of supporting frame(6a); at least one mechanism for seat adjustment.
  • the seat assembly further comprises motion restrictors (5), for holding vehicle seat assembly to base of vehicle (6) and motion restrictor is made up of material having good elasticity and strength such as nylon, synthetic plastic, rubber.
  • the seat assembly has at least one suspension mechanism for holding the main frame wherein suspending mechanism are indirectly attached to upper horizontal bar of supporting frame or to roof by means of two trailing forks namely upward and downward fork and suspension mechanism is selected from coil spring type, air suspension, rubber spring, magnetorheological suspension, more preferably selected is coil spring suspension.
  • the said upward fork arm's lower potion (12) is attached to damper end of suspension and upper portion (9) is attached to roof of vehicle by means of clamp with locking system to prevent the abrupt movement.
  • the said downward fork arm's upper portion (1 1) is attached to spring end of suspension and lower portion (10) is attached to main frame of seat by means of welding or clamps. All frames are made up of metal like steel, steel alloy or carbon fibre.
  • the seat assembly for vehicles to carry the patient stretchers having at least four suspension mechanism for holding the main frame and at least four suspending mechanism which are indirectly attached to support frame or to the roof.
  • the seat is swivel some amount of lateral, forward and backward movement when vehicle turns, moves or stops suddenly and runs on uneven road surface and at the same time vertical movement when vehicle moves on uneven roads.
  • the seat assembly is attached to the upper horizontal bar of supporting frame or to the roof by means of inverted suspension mechanism, thus the occupant would feel minimal effect of jerks/vibration with some swivel movement.
  • the present invention relates to a swivel seat assembly which is indirectly suspended above floor of vehicle and attached to the upper horizontal bar of seat supporting frame or roof of a vehicle.
  • the said assembly also allows seat to swivel some amount of lateral, forward and backward movement when vehicle is in motion or stops suddenly and runs on uneven road surface and at the same time vertical movement also referred as displacement when vehicle moves on uneven roads.
  • Indirectly suspended for current invention means the seat has been suspended above the floor of the vehicle using inverted suspension system, i.e. suspension system even after being mounted above the seat works the same way as if being mounted below.
  • the present disclosure provides a swivel mechanism for vehicle seat with supporting frame comprising; means for securing to floor of the vehicle; means for suspensions; means for holding assembly to seat; means for swivel mechanism along with means for seat adjustment.
  • vehicle seat assembly has suspension mechanism for holding the main seat frame wherein suspension is indirectly attached to roof of the vehicle.
  • the suspension mechanism for suspending and holding the seat load in present invention comprise improvement in conventional vehicle suspension of spring and damper, including a standard coil spring; but, in order to facilitate capable of providing insulation to load on seat from the roughness/bumps.
  • spring and damper including a standard coil spring
  • types of suspensions which can be used in the seating system are coil spring type, air suspension, rubber spring, magnetorheological suspension.
  • the preferred one is coil spring suspension due to its compactness.
  • the main objective of the present invention is to improve the suspension efficiency relating to increase the insulation by suspending the seat from the floor and prevent direct bumps effect to seating object.
  • this invention provides an inverted suspension mechanism mounted above the seat main frame including attached two paired trailing forks disposed apart from each other in opposite direction.
  • the attachment of first fork is such that the curved arm of fork is attached to suspension at the spring end and other end is attached to seat main frame.
  • the attachment of second fork is such that the curved arm of fork are attached to suspension at the damper end and other end is attached to vehicle roof or upper horizontal bar of supporting frame, Wherein the spring portion of said suspension system is positioned above the damper beam. Due to this positioning of spring the object load or weight is applied above the spring and it also eliminate the stretching of direct spring due to applied load. This way the desired effect can be achieved from it without actually mounting suspensions below the seat.
  • a motion restrictors to tie the seat base frame with vehicle base.
  • the specific motion restrictors are selected from material made up of rubber having good elasticity and strength.
  • the forgoing embodiment has the structure, that will restrict the sudden unlimited swiveling of suspended seat due to turn or abrupt stopping.
  • the present invention provides a comfort seating arrangement to the occupant with reduced jerk, vibrations and jumps while travelling on the uneven road.
  • This invention is also advantageous for the vehicles such as ambulance to carry the patient stretchers.
  • Vehicle seat assembly of present invention comprises seat with seat base frame (4); main frame (3) to be suspended; at least one means for suspension (2) which can be suspended invertedly to roof by means of roof mounting (1) or also by means of upper horizontal bar of supporting frame (6a); at least one mechanism for seat adjustment.
  • Vehicle seat assembly of present invention further comprises motion restrictors (5) for holding Vehicle seat assembly to base of vehicle (6).
  • All frames are made up of metal like steel or steel alloy, carbon fibre and any other material suitable to make the frames.
  • the conventional suspension has spring (7), and damper (8) which is attached to roof (1) or to upper end of supporting frame (6a) and seat main frame (3) by means of trailing fork arms.
  • the downward arm's upper portion (1 1) is attached to spring end of suspension and lower portion (10) is attached to main frame of seat by means of welding or clamps.
  • the seat is attached to the suspension system by means of fork (as shown in figure 6B) by welding it at point (10) and roof mounting (or upper end of extended base frame) is attached to suspension system by means of fork(as shown in figure 6A) by means of welding/clamp.
  • Fork have two parallel curve arm in such a way that they don't obstruct each others movement when sprung (compressed) and un-sprung (decompressed) the suspension system upon bumps.
  • the seats in this system are positioned at a certain level considering average weight of a person occupying the seats by pre-compressing the inverted suspension by adjusting the motion restrictors at the base of the main frame by still allowing some amount of vertical displacement in the range of about 6-10 cm (depending upon vehicle type ) to compensate for the largest bumps of the road.
  • the present invention provides a comfort seating arrangement to the occupant with reduced jerk, vibrations and jumps while travelling on the uneven road surfaces.
  • This invention is also advantageous for the vehicles such as ambulance to carry the patient stretchers.
  • inverted suspension system are responsible for the stability of the occupant on seat. Also when a vehicle moves on uneven road surface, the jerk produced during the journey is not directly passed on to the occupant, but it is digested by the indirect suspension seat assembly and provides comfortable travelling.
  • the whole assembly can be encapsulated in a seat back rest itself to make it compact and to provide aesthetic look, wherein two parallel hollow cone shaped structures (13) made up of metal, plastic, fibre etc, are placed inside the back rest of the seat around seat main frame (3) bar , to allow swivel movement of seat main frame (3) along with seat base.
  • a cover is positioned above the suspended seat system to encapsulate the same.
  • the seat assembly as disclosed in present invention is suitable for all vehicles, not limiting to motor vehicles (cars, trucks, buses, jeeps, SUVs, ambulance), railed vehicles (trains, trams, magnetic levitation high speed trains), watercraft (ships, boats), aircraft and spacecraft and off-road vehicles such as tractors, forklifts, cranes, backhoes, bulldozers, and golf carts.
  • This assembly can be applied to any type of seat including seat modified for children, infants and elderly persons.
  • Example 1 Comparative vibration study between normal seat assembly (existing seating system directly attached to base of the vehicle) and indirectly suspended seat assembly as disclosed in present invention was carried out on plain road and bumpy road surfaces using Accelerometer at different speeds and the data is analysed using Fast Fourier Transformations (FFT) algorithm, The graphical representation is given in figure 9. It represents the overview graph of comparison based on vibration in Hz Vs speed of vehicle between two seating arrangements. Vertical Plain Road Surface Bumpy Road Surface Vibration in Speed

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

Abstract

La présente invention concerne un ensemble siège qui est très confortable pour les passagers même lorsque le véhicule se déplace sur des surfaces de routes accidentées, et la présente invention concerne plus particulièrement un ensemble siège qui présente un certain degré de mouvement de pivotement limité pour neutraliser les mouvements vers l'avant/vers l'arrière et les mouvements latéraux d'un véhicule en mouvement ou lors de virages et de freinages brusques, les sièges dans cet ensemble étant conçus pour s'isoler eux-même du plancher d'un véhicule pour éviter la transmission directe de vibrations et de secousses à l'occupant. Ceci est obtenu par la suspension indirecte des sièges au-dessus du plancher du véhicule au moyen d'un mécanisme de suspension inversé fixé à la partie supérieure de la barre horizontale de la structure de support de siège ou au toit du véhicule.
PCT/IN2015/000360 2014-09-18 2015-09-16 Système de siège pivotant indirectement suspendu pour véhicules WO2016042575A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN888MU2014 2014-09-18
IN888/MUM/2014 2014-09-18

Publications (2)

Publication Number Publication Date
WO2016042575A2 true WO2016042575A2 (fr) 2016-03-24
WO2016042575A3 WO2016042575A3 (fr) 2016-05-12

Family

ID=55533974

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2015/000360 WO2016042575A2 (fr) 2014-09-18 2015-09-16 Système de siège pivotant indirectement suspendu pour véhicules

Country Status (1)

Country Link
WO (1) WO2016042575A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107521384A (zh) * 2016-06-21 2017-12-29 通用汽车环球科技运作有限责任公司 座椅轨道支撑阻尼器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913482A (en) * 1985-09-30 1990-04-03 Mitsubishi Denki Kabushiki Kaisha Seat suspension system for automotive vehicle or the like
ITTO20080218A1 (it) * 2008-03-21 2009-09-22 Gemini Srl Sedile di sicurezza per un veicolo
CA2757492C (fr) * 2009-04-01 2015-01-20 E.V.S. Ltd. Ensemble siege pour vehicule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107521384A (zh) * 2016-06-21 2017-12-29 通用汽车环球科技运作有限责任公司 座椅轨道支撑阻尼器
CN107521384B (zh) * 2016-06-21 2020-10-16 通用汽车环球科技运作有限责任公司 座椅轨道支撑阻尼器

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Publication number Publication date
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