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SE2050658A1 - A seat suspension unit for a vehicle and a vehicle comprising a seat with a seat suspension unit - Google Patents

A seat suspension unit for a vehicle and a vehicle comprising a seat with a seat suspension unit

Info

Publication number
SE2050658A1
SE2050658A1 SE2050658A SE2050658A SE2050658A1 SE 2050658 A1 SE2050658 A1 SE 2050658A1 SE 2050658 A SE2050658 A SE 2050658A SE 2050658 A SE2050658 A SE 2050658A SE 2050658 A1 SE2050658 A1 SE 2050658A1
Authority
SE
Sweden
Prior art keywords
spring
seat
suspension unit
seat suspension
vehicle
Prior art date
Application number
SE2050658A
Other languages
Swedish (sv)
Other versions
SE544155C2 (en
Inventor
Klaus Schmidt
Kunal Muralidharan
Maria Palmér
Siri Sridharamurthy
Original Assignee
Scania Cv Ab
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 Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE2050658A priority Critical patent/SE544155C2/en
Priority to DE102021111460.8A priority patent/DE102021111460A1/en
Publication of SE2050658A1 publication Critical patent/SE2050658A1/en
Publication of SE544155C2 publication Critical patent/SE544155C2/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
    • B60N2/502—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
    • B60N2/50—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
    • B60N2/24—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
    • B60N2/4242—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 vertical
    • 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
    • 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
    • B60N2/507—Parallelogram-like 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
    • B60N2/50—Seat suspension devices
    • B60N2/506—Seat guided by rods
    • B60N2/508—Scissors-like 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
    • B60N2/50—Seat suspension devices
    • B60N2/509—Seat guided by slides or the like
    • 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
    • B60N2/52—Seat suspension devices using fluid means
    • B60N2/525—Seat suspension devices using fluid means using gas
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/021—Spring characteristics, e.g. mechanical springs and mechanical adjusting means the mechanical spring being a coil spring

Landscapes

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

Abstract

A seat suspension unit (1) for a vehicle (2) is described. The seat suspension unit (1) comprises a first spiral spring (3) having a first stiffness (k1), a second spiral spring (4) having a second stiffness (k2) that is higher than the first stiffness (k1) in an uncompressed state of the first spring (3) and of the second spring (4) and an attachment device (5). The first spring (3) and the second spring (4) are arranged concentrically in relation to each other, wherein the first spring (3) is displaced in relation to the second spring (4) along a common axis of extension (x) of the first spring (3) and of the second spring (4) such that a portion (z) of the first spring (3) protrudes from an end portion (12) of the second spring (4) along the axis of extension (x). A seat suspension system (14), a seat (8) and a vehicle (2) are also described herein.

Description

A seat suspension unit for a vehicle and a vehicle comprising a seat With a seat suspension unit.
BACKGROUND OF THE INVENTION AND PRIOR ART The present disclosure relates to suspension of seats for vehicles and particularly for trucks or busses.
A vehicle is exposed to different kinds of vibrations during use of the vehicle. Thevibrations are transmitted to the body of a driver driving the vehicle, Which vibrationsmay cause fatigue of the driver. The problem may appear When the driver has beendriving for a long time, Which is often the case With trucks or busses. In order tominimize vibrations and thereby to minimize the following negative effects, seats of vehicles are provided With suspension systems.
Usually, a seat suspension system comprises an air spring using compressed air Whichis fed into the air spring. A damper is also frequently assembled into a seat suspensionsystem to counteract vibrations acting on the seat.
In US5799922A, a vehicle seat suspension system using compressed air is described.
One drawback With an air suspension system is that it requires energy to compress the air pumped into the air spring.
Thus, it is desirable to provide a seat suspension unit for a vehicle that is robust, provides good comfort and does not require an energy supply during use.
SUMMARY OF THE INVENTION An object of the present disclo sure is to provide a seat suspension unit for a vehicle,especially for a truck or a buss, Which is robust, provides good comfort and does not require an energy supply during use.
The above mentioned object is achieved by the seat suspension unit defined in claim l.
Thus, the object is achieved by a seat suspension unit for a vehicle, wherein the seatsuspension unit comprises a first spiral spring having a first stiffiiess and a secondspiral spring having a second stiffiiess that is higher than the first stiffness in anuncompressed state of the first spring and of the second spring. The seat suspensionunit comprises also an attachment device comprising a spring mounting memberarranged for mounting of at least the first spring at the attachment device and a seatattachment member arranged to attach the seat suspension unit at a seat of the vehicle.The first spring and the second spring are arranged concentrically in relation to eachother and the first spring is displaced in relation to the second spring along a commonaxis of extension of the first spring and of the second spring such that a portion of thefirst spring protrudes from an end portion of the second spring along the axis ofextension. Thus, the portion of the first spring protruding from the end portion of thesecond spring can be defined as a distance between the end portion of the second spring and a corresponding first end portion of the first spring.
Because the portion of the first spring protrudes from the end portion of the secondspring the first spring will be activated first, i.e. before the second spring, when theseat suspension unit will be exposed for vibrations during use of the seat suspensionunit. The first spring may be longer than the second spring. Further, because the firstspring is characterized by a lower stiffness comparing to the second spring, the firstspring will take care of lower vibrations caused by minor bumps on smooth roads orwhen a lower weight driver is driving the vehicle. The second spring will be activateafter the first spring has been activated and the second spring will take care of higheramplitude vibrations caused by uneven roads or when a higher weight driver is drivingthe vehicle. Thus, the seat suspension unit according to the present disclosure, providesa high comfort both when driving on smooth rods and on uneven roads. Further, theseat suspension unit does not require any energy supply and is robust thanks to a fewsimple components of the seat suspension unit. Thereby, the above mention object isachieved.
According to an embodiment the second spring is arranged inside the first spring. Thefirst spring is then an outer spring and the second spring is an inner spring of the seat suspension unit.
According to an embodiment the spring mounting member comprises a threaded opening and the seat attachment member comprises a threaded rod arranged to be screWed into the threaded opening. Thus, the seat attachment member can be attachedto the spring mounting member in a simple manner thanks to the threads in theopening and on the rod. Further, the length of the seat suspension unit can be adjustedby screWing the spring mounting member in relation to the seat attachment member.Thus, it is possible to adjust the height of a seat When the seat suspension unit has beenmounted at the seat, simply by screWing the spring mounting member in relation to the seat attachment member.
According to an embodiment the seat attachment member comprises a bearing. Thebearing enables free rotation of the seat attachment member and thereby of the seatsuspension unit around a rotation axis extending through the center of the bearing.Thus, the seat suspension unit can be arranged inclined and still Work properly taking care of vibrations acting in different directions.
According to an embodiment the bearing is a spherical bearing. The spherical bearingenables free rotation of the seat suspension unit around several rotation axis extendingthrough the center of the spherical bearing. As a result a yet improved seat suspensionunit is provided.
According to an embodiment the seat suspension unit comprises an elastic linkmember arranged to connect the second spring to the spring mounting member of theattachment device. Thus, the second spring can be connected to the spring mountingmember in order to be held in place Within the seat suspension unit by the elastic linkmember. Further, thanks to the elastic link member the first spring can be activated Without directly activating of the second spring during use of the seat suspension unit.
According to an embodiment the elastic link member is a telescopic link member. Thetelescopic link member comprises at least two sub-links arranged to cooperate Witheach other to achieve a function of a telescopic link. Thus, a simple and robust elasticlink member is provided.
According to an embodiment the seat suspension unit comprises the attachment devicearranged at each end portion of the seat suspension unit. As a result, attachment of theseat suspension unit is facilitated.
According to an embodiment the first spring has a varying pitch between coils and thesecond spring has a constant pitch between coils. Varying pitch between coils of thefirst spring results in a progressive stiffness of the first spring, which contributes to an efficient damping of vibration and thereby to yet improved comfort.
An object of the present disclo sure is to provide a robust suspension system for a seatfor a vehicle, which suspension system provides good comfort and does not require anenergy supply during use. The object is achieved by a seat suspension system for avehicle, such as a scissor seat suspension system, comprising a seat suspension unit according to any of the embodiments above.
Yet further object of the present disclosure is to provide a seat for a vehicle providinggood comfort without need of an energy supply to the suspension system of the seatduring use. The object is achieved by a seat for a vehicle comprising a seat suspensionsystem according to the above mentioned embodiments.
Yet further object of the present disclosure is to provide a vehicle providing goodcomfort without need of an energy supply to the suspension system of the seat of thevehicle during use. The object is achieved by a vehicle comprising a seat according theabove mentioned embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS In the following preferred embodiments of the invention are described with reference to the attached drawings, on which: Fig. la shows a seat suspension unit before being assembled, Fig. lb shows an assembled seat suspension unit shown in Fig. la, Fig. 2 shows a seat suspension system with the suspension unit shown in Fig. lb, Fig. 3 shows a seat with the seat suspension system shown in Fig. 2 and Fig. 4 shows a vehicle with a seat shown in Fig. 3.
DETAILLED DESCRIPTION OF PREFERRED EMBODIMENTS OF THEINVENTION Fig. la and Fig. lb illustrate a seat suspension unit l for a vehicle 2. The vehicle 2 isshown in Fig. 4. The seat suspension unit 1 in Fig. la, is illustrated before beingassembled, where the components comprised by the seat suspension unit 1 are clearly illustrated. Fig. lb shows an assembled seat suspension unit 1 shown in Fig. la.
The seat suspension unit 1 comprises: - a first spiral spring 3 having a first stiffness kl, - a second spiral spring 4 having a second stiffness k2 that is higher than the firststiffness kl in an uncompressed state of the first spring 3 and of the second spring 4.
The stiffness of the first spring 3 and of the second spring 4 can be deterrnine bychoosing, for example, the thickness of the coils, the pitch of the coils or by the diameter of respective first spring 3 and of the second spring 4.
Thus, according to some embodiments, the first stiffness kl of the first spring 3 isapproximately between 65-68, and the second stiffness k2 of the second spring 4 is approximately between 26-27. The stiffiiess k is measured in N/mm.
As illustrated in Fig. la and Fig. lb, the seat suspension unit l is arranged such that thesecond spring 4 is arranged inside the first spring 3. Thus, the first spring 3 is an outerspring and the second spring 4 is an inner spring of the suspension unit l. According toan embodiment (not shown) the first spring 3 can be arranged inside the second spring2.
Herein is some example data related to the first spring 3 and to the second spring 4.
A first diameter dl of the first spring 3: approximately 60 mm.
A second diameter d2 of the second spring 4: approximately 36 mm.A first length ll of the first spring 3: approximately 120 mm.
A second length l2 of the second spring 4: approximately 80 mm.
A first thickness tl of the first spring 3: approximately 8 mm.
A second thickness t2 of the second spring 4: approximately 5 mm.
A first pitch pl between coils of the first spring 3: progressively l, 1.25, 4.23, 4.73,6.78, 7.28, 8.28 mm between l to 8 coils respectively.
A second pitch p2 between coils of the second spring 4: approximately 9.64 mm.Preferably, the first length ll of the first spring 3 is greater than the second length 12 ofthe second spring 4. However, the first length ll may be equal the second length 12.
The material of the first spring 3 and of the second spring 4 may be steel, wherein thefirst spring 3 may comprise a steel with different characteristics comparing to the steelof the second spring 4. For example, EN 10270-2 FDSiCr or SHI-200 may be used formanufacturing of the first spring 3 and the second spring 4.
Further, the seat suspension unit 1 comprises an attachment device 5 comprising aspring mounting member 6 arranged for mounting of at least the first spring 3 at theattachment device 5 and a seat attachment member 7 arranged to attach the seat suspension unit l at a seat 8 of the vehicle 2. The seat 8 is illustrated in Fig. 3.
The spring mounting member 6 may have a form of a spring cap arranged to receive atleast the first spring 3 to fasten at least the first spring 3 to the spring mountingmember 6. The diameter of the spring mounting member 6 corresponds to the firstdiameter dl of the first spring 3 which results in that the first spring 3 may be attachedto the spring mounting member 6 by inserting the first spring 3 into the cap formedspring mounting member 6, wherein the first spring 3 is held within the springmounting member 6 by friction forces between an outer surface of the first spring 3and an inner surface of the spring mounting member 6. The spring mounting member 6 may be manufactured of steel or of aluminium.
The attachment device 5 comprises also the seat attachment member 7. According toan embodiment the seat attachment member 7 comprises a threaded rod 9 and thespring mounting member 6 comprises a threaded opening 10. Thus, the seat attachmentmember 7 can be attached to the spring mounting member 6 in a simple manner byscrewing the rod 9 into the opening 10. Further, thanks to the screw connectionbetween the rod 9 of the seat attachment member 7 and the opening 10 of the springmounting member 6, the length of the seat suspension unit l can be adjusted byscrewing in and out of the rod 9 into or out of the opening 10. Thus, the seatsuspension unit l may also have a height adjusting function of the seat 8, when the seatsuspension unit l has been mounted at the seat 8.
Further, the seat attachment member 7 may comprise a bearing 11, which bearing 11 may be a spherical bearing.
As illustrated in Fig. 1a and Fig. 1b, the first spring 3 and the second spring 4 arearranged concentrically in relation to each other having a common axis x. In Fig. lb, itis shown that the first spring3 is displaced in relation to the second spring 4 along thecommon axis of extension x of the first spring 3 and of the second spring 4 such that aportion z of the first spring 3 protrudes from an end portion 12 of the second spring 4 along the axis of extension x.
The portion z protruding, i.e. extending from the end portion 12 of the second spring 4may for example be 1/3 of the length of the first spring 3. The portion z of the firstspring 3 protruding from the end portion 12 of the second spring 4 can be defined as adistance between the end portion 12 of the second spring 4 and a corresponding first end portion 16 of the first spring 3.
Thus, the portion z of the first spring 3 may correspond to a difference between thefirst length ll of the first spring 3 and the second length l2 of the second spring 4 whenthe first spring 3 and the second spring 4 have been positioned within the seatsuspension unit 1 such that one end of respective the first spring 3 and of the secondspring 4 are substantially at the same position. Altematively, the first length ll is equalthe second length l2 and the portion z is achieved by moving the whole first spring 3 along the axis x in relation to the second spring 4.
Because the portion z of the first spring 3 protrudes from the end portion 12 of thesecond spring 4 the first spring 3 will be activated first, i.e. before the second spring 4,when the seat suspension unit 1 will be exposed for vibrations during use of the seatsuspension unit 1. Further, because the first spring 3 is characterized by a lowerstiffness comparing to the second spring 4, the first spring 3 will take care of lowervibrations caused by minor bumps on smooth roads or when a lower weight driver isdriving the vehicle 2. The second spring 4 will be activate after the first spring hasbeen activated and the second 4 spring will take care of higher amplitude vibrationscaused by uneven roads or when a higher weight driver is driving the vehicle 2. Thus,the seat suspension unit 1 according to the present disclosure, provides a high comfort both when driving on smooth rods and on uneven roads. Further, the seat suspension unit 1 does not require any energy supply during use and is robust thanks to a few simple components of the seat suspension unit.
The seat suspension unit 1 comprises an elastic link member 13 arranged to connectthe second spring 4 to the spring mounting member 6 of the attachment device 5.According to an embodiment, the elastic link member 13 is a telescopic link member1 3 .
In order to improve mounting of the seat suspension unit 1 at the seat 8, the attachmentdevice 5 may be arranged at each end portion of the seat suspension unit 1. Thus, theattachment devise 5 may be arranged at each respective end portions of the first spring3 and the second spring 4 and by this holding the first spring 3 and the second spring 4properly in place within the seat suspension unit 1 and facilitating mounting of the seatsuspension unit at the seat 8.
According to an embodiment the first spring 3 has a varying pitch pl between coilsand the second spring 4 has a constant pitch p2 between coils. Thus, the first pitch plof the first spring 3 may have different values along the extension of the first spring 3.The values of first pitch pl may decrease in a direction from the seat 8 seeing when the seat suspension unit 1 has been mounted at the seat 8.
Fig. 2 shows a seat suspension system 14 for a vehicle. According to the embodimentin Fig. 2, the seat suspension system 14 is a scissor seat suspension system. Scissorsuspension systems are common within the technical field and therefore not describedherein. A seat suspension unit 1 has been attached to the seat suspension system 14.The seat suspension system 14 may also comprise a shock absorber 15. The shockabsorber 15 is a common component within suspension and therefore is not described in details herein.
Fig. 3 shows a seat 8 for a vehicle comprising a scissor seat suspension system 14. The seat 8 may be a seat adapted for a driver of, for example, a truck or a bus.
Fig. 4 shows a vehicle 2, such as a truck, comprising a seat 8 with a scissor suspensionsystem illustrated schematically.
The invention is not restricted to the described embodiment but may be Varied freely at the scope of the claims.
As used herein, the terrn "comprising" or "comprises" is open-ended, and includes oneor more stated features, elements, steps, components or functions but does not precludethe presence or addition of one or more other features, elements, steps, components, functions, or groups thereof.

Claims (12)

Claims
1. A seat suspension unit (1) for a vehicle (2), Wherein the seat suspension unit (1)comprises: - a first spiral spring (3) having a first stiffness (kl), - a second spiral spring (4) having a second stiffness (k2) that is higher than the firststiffness (kl) in an uncompressed state of the first spring (3) and of the second spring(4) and - an attachment device (5) comprising a spring mounting member (6) arranged formounting of at least the first spring (3) at the attachment device (5) and a seatattachment member (7) arranged to attach the seat suspension unit (1) at a seat (8) ofthe vehicle (2), Wherein the first spring (3) and the second spring (4) are arranged concentrically in relation toeach other and Wherein the first spring (3) is displaced in relation to the second spring(4) along a common axis of extension (X) of the first spring (3) and of the secondspring (4) such that a portion (z) of the first spring (3) protrudes from an end portion (12) of the second spring (4) along said axis of extension (x).
2. The seat suspension unit (1) according to claim 1, Wherein the second spring (4) is arranged inside the first spring (3).
3. The seat suspension unit (1) according to claim 1 or 2, Wherein the spring mountingmember (5) comprises a threaded opening (10) and the seat attachment member (7) comprises a threaded rod (9) arranged to be screwed into said threaded opening (10).
4. The seat suspension unit (1) according to any of claims 1 to 3, Wherein the seat attachment member (7) comprises a bearing (11).
5. The seat suspension unit (1) according to claim 4, Wherein the bearing (11) is a spherical bearing.
6. The seat suspension unit (1) according to any of claims 1 to 5, Wherein the seatsuspension unit (1) comprises an elastic link member (13) arranged to connect the second spring (4) to the to the spring mounting member (6) of attachment device (5).
7. The seat suspension unit (1) according to claim 6, Wherein the elastic link member(13) is a telescopic link member (13).
8. The seat suspension unit (1) according to any of claims 1 to 7, comprising the attachment device (5) arranged at each end portion of the seat suspension unit (1).
9. The seat suspension unit (1) according to any of claims 1 to 8, Wherein the firstspring (3) has a varying pitch (pl) between coils and the second spring (4) has a constant pitch (p2) between coils.
10. A seat suspension system (14) for a vehicle (2), such as a scissor seat suspension system, comprising a seat suspension unit (1) according to any of claims 1 to 9.
11. A seat (8) for a vehicle (2) comprising a seat suspension system (14) according to claim 10.
12. A vehicle (2) comprising a seat (8) according to claim ll.
SE2050658A 2020-06-05 2020-06-05 A seat suspension unit for a vehicle and a vehicle comprising a seat with a seat suspension unit SE544155C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2050658A SE544155C2 (en) 2020-06-05 2020-06-05 A seat suspension unit for a vehicle and a vehicle comprising a seat with a seat suspension unit
DE102021111460.8A DE102021111460A1 (en) 2020-06-05 2021-05-04 Seat strut for a vehicle and vehicle having a seat with a seat strut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2050658A SE544155C2 (en) 2020-06-05 2020-06-05 A seat suspension unit for a vehicle and a vehicle comprising a seat with a seat suspension unit

Publications (2)

Publication Number Publication Date
SE2050658A1 true SE2050658A1 (en) 2021-12-06
SE544155C2 SE544155C2 (en) 2022-02-08

Family

ID=78604922

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2050658A SE544155C2 (en) 2020-06-05 2020-06-05 A seat suspension unit for a vehicle and a vehicle comprising a seat with a seat suspension unit

Country Status (2)

Country Link
DE (1) DE102021111460A1 (en)
SE (1) SE544155C2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272344A (en) * 1940-10-07 1942-02-10 Albert M Kimbro Shock absorbing pedestal for seats
KR19980041351U (en) * 1996-12-23 1998-09-15 박병재 Seat skew compensation device
CN106740337A (en) * 2016-12-08 2017-05-31 新昌县宏胜机械有限公司 A kind of automobile is with anti-twisting damper
EP3312448A1 (en) * 2016-10-20 2018-04-25 NHK Spring Co., Ltd. Vibration damping device and vehicle seat provided with the vibration damping device
EP3587173A1 (en) * 2018-06-28 2020-01-01 Grammer AG Adjustable height restrictor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5799922A (en) 1996-10-15 1998-09-01 Seating Technologies, Inc. Low profile seat suspension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2272344A (en) * 1940-10-07 1942-02-10 Albert M Kimbro Shock absorbing pedestal for seats
KR19980041351U (en) * 1996-12-23 1998-09-15 박병재 Seat skew compensation device
EP3312448A1 (en) * 2016-10-20 2018-04-25 NHK Spring Co., Ltd. Vibration damping device and vehicle seat provided with the vibration damping device
CN106740337A (en) * 2016-12-08 2017-05-31 新昌县宏胜机械有限公司 A kind of automobile is with anti-twisting damper
EP3587173A1 (en) * 2018-06-28 2020-01-01 Grammer AG Adjustable height restrictor

Also Published As

Publication number Publication date
DE102021111460A1 (en) 2021-12-09
SE544155C2 (en) 2022-02-08

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