SE531594C2 - chair base - Google Patents

chair base

Info

Publication number
SE531594C2
SE531594C2 SE0702384A SE0702384A SE531594C2 SE 531594 C2 SE531594 C2 SE 531594C2 SE 0702384 A SE0702384 A SE 0702384A SE 0702384 A SE0702384 A SE 0702384A SE 531594 C2 SE531594 C2 SE 531594C2
Authority
SE
Sweden
Prior art keywords
scissor link
link mechanisms
base according
seat
chair base
Prior art date
Application number
SE0702384A
Other languages
Swedish (sv)
Other versions
SE0702384L (en
Inventor
Krister Lindquist
Rickard Magnusson
Anna Kjernsvik
Olov Karlsson
Kenneth Soeder
Johan Knaelmann
Original Assignee
Scania Cv Abp
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 Abp filed Critical Scania Cv Abp
Priority to SE0702384A priority Critical patent/SE531594C2/en
Priority to PCT/SE2008/051191 priority patent/WO2009054788A1/en
Publication of SE0702384L publication Critical patent/SE0702384L/en
Publication of SE531594C2 publication Critical patent/SE531594C2/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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/1605—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable characterised by the cinematic
    • B60N2/161—Rods
    • B60N2/1615—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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • 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
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
    • B60N2/062—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable transversally slidable
    • 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
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/168—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable and provided with braking systems
    • 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
    • B60N2/38—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles
    • B60N2/39—Seats tiltable to compensate for roll inclination of vehicles
    • 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
    • B60N2/506—Seat guided by rods
    • 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
    • B60N2/54—Seat suspension devices using mechanical springs
    • B60N2/548—Torsion springs, e.g. torsion helicoidal 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
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2002/0204—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable characterised by the seat or seat part turning about or moving along a non-standard, particular axis, i.e. an axis different from the axis characterising the conventional movement
    • B60N2002/0212—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable characterised by the seat or seat part turning about or moving along a non-standard, particular axis, i.e. an axis different from the axis characterising the conventional movement the seat or seat part turning about or moving along a longitudinal axis

Description

2 nismerna vara förenade genom en torsionsfiäder vid någon av sina ändar. Torsions- fjädern kan på detta sätt tjäna som en krängningshämmare för underredet. Torsions- fjädern kan då vara utformad för att tillåta fiädringsrörelser och/eller dämpa sväng- ningar även i sidled hos underredet. 2 nisms be joined by a torsion spring at one of its ends. The torsion spring can in this way serve as an anti-roll bar for the chassis. The torsion spring can then be designed to allow fi springing movements and / or dampen oscillations even laterally of the chassis.

Enligt ytterligare en utföringsform kan saxlänksmekanismernas undre ändar vara anordnade på större inbördes sidoavstånd än deras övre ändar. Ett säte på underredet kan då tillåta fiädringsrörelser och/eller dämpa svängningar genom att svänga liksom en pendel omkring en virtuell längsgående svängaxel ovanför sätet.According to a further embodiment, the lower ends of the scissor link mechanisms can be arranged at greater mutual lateral distances than their upper ends. A seat on the chassis can then allow fi springing movements and / or dampen oscillations by swinging like a pendulum around a virtual longitudinal pivot axis above the seat.

Sidoavståndet kan då väljas exempelvis så att svängaxeln placeras ungefär i ögon- höjd hos en person som sitter i sätet.The side distance can then be selected, for example, so that the pivot axis is placed approximately at eye level for a person sitting in the seat.

Om i motsatt fall saxlänksmekanismernas övre ändar är anordnade på större inbördes sidoavstånd än deras undre ändar, kan sätet i stället svänga som en omvänd pendel omkring en virtuell längsgående svängaxel under sätet.If, on the other hand, the upper ends of the scissor link mechanisms are arranged at greater lateral lateral distances than their lower ends, the seat may instead pivot like an inverted pendulum about a virtual longitudinal pivot axis below the seat.

Andra särdrag och fördelar med uppfinningen kan framgå av patentkra- ven och följande beskrivning av utföringsexempel.Other features and advantages of the invention may be apparent from the claims and the following description of embodiments.

KORTFATTAD RlTNlNGSBESKR|VNlNG FIG. 1 är en schematisk vy snett underifrån av en fordonsstol med ett stolsunderrede enligt uppfinningen; FIG. 2 är en frontvy med bortbrutna delar av stolen i FIG. 1 monterad vid ett fordonsgolv; FlG. 3 är en vy snett ovanifrån med bortbrutna delar av en fordonsstol med ett par diagonalt korsade anordnade svängningsdämpare; FlG. 4 är en vy snett ovanifrån av ett stolsunderrede med en sväng- ningsdämpare iform av en krängningshämmare; och FIG. 5 är en vy bakifrån med bortbrutna delar av en fordonsstol med in- bördes uppåt divergerande saxlänkar; och FlG. 6 är en vy bakifrån med bortbrutna delar av en fordonsstol med in- bördes nedåt divergerande saxlänkar.BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view obliquely from below of a vehicle seat with a seat base according to the invention; FIG. 2 is a front view with broken away parts of the chair of FIG. 1 mounted to a vehicle floor; FlG. 3 is a view obliquely from above with broken away parts of a vehicle seat with a pair of diagonally crossed vibration dampers arranged; FlG. 4 is a view obliquely from above of a chair base with a vibration damper in the form of an anti-roll bar; and FIG. 5 is a rear view with broken away parts of a vehicle seat with mutually upwardly diverging scissor links; and FlG. 6 is a rear view with broken away parts of a vehicle seat with mutually downwardly diverging scissor links.

På ritningen har delar med liknande funktion genomgående lika hänvis- ningstal. 10 15 20 25 30 šäffšfë šiïšlä 3 DETALJERAD BESKRIVNING AV UTFÖRlNGSEXEMPEL På ritningsfigurerna visas schematiskt framställda utföringsformer av stolsunderreden 10 enligt uppfinningen.In the drawing, parts with a similar function consistently have the same reference numerals. DETAILED DESCRIPTION OF EMBODIMENTS The drawing figures show schematically represented embodiments of the chair base 10 according to the invention.

Varje underrede 10 kan anses vara av saxlänkstyp och innefattar närma- re bestämt ett par på inbördes avstånd anordnade saxlänksmekanismer 20. Varje saxlänksmekanism innefattar i sin tur ett par vid sina mittpunkter ledat förbundna sax- länkarmar 22. Fastän andra konstruktioner är möjliga, är övre och undre ändar av varje par av saxlänkarmar 22 i saxlänksmekanismerna vidare på känt och ej närmare visat sätt via skjutleder 24 ledat - omkring axlar 26 (FIG. 1)- och förskjutbart för- bundna med var sin längsstyrning 30 som sträcker sig i en Iängdriktning hos under- redet 10. Längsstyrningarna 30 visas i utföringsexemplen i form av glidskenor eller -stänger med cirkulärt tvärsnitt, men kan även ha andra former; de kan exempelvis även vara bildade av ej visade längsgående spår för skjutlederna.Each chassis 10 can be considered to be of the scissor link type and more specifically comprises a pair of spaced shear link mechanisms 20. Each scissor link mechanism in turn comprises a pair of scissor link arms 22 articulated at their midpoints 22. Although other constructions are possible, the upper and lower ends of each pair of scissor link arms 22 in the scissor link mechanisms further in a known and not shown manner via sliding joints 24 articulated - about shafts 26 (FIG. 1) - and slidably connected to each longitudinal guide 30 extending in a longitudinal direction of below the nest 10. The longitudinal guides 30 are shown in the embodiments in the form of slide rails or rods with a circular cross-section, but can also have other shapes; for example, they can also be formed by longitudinal grooves (not shown) for the sliding joints.

Det övre paret av längsstyrningar 30 är på ej närmare visat sätt förbund- na med en sits 14 hos ett fordonssäte 12 som även har ett ryggstöd 16. Mellan un- derstödet 10 och sätet 12 kan även finnas andra ej visade typer av mekanismer som möjliggör t.ex. vinkelinställning av sitsen 14 och ryggstödet 16.The upper pair of longitudinal guides 30 are in a manner not shown in more detail connected to a seat 14 of a vehicle seat 12 which also has a backrest 16. Between the support 10 and the seat 12 there may also be other types of mechanisms not shown which enable t .ex. angle adjustment of the seat 14 and the backrest 16.

Det undre paret av längsstyrningar 30 är avsedda att vara förbundna med ett fordonsgolv 18 (FlG. 2). Om inte underredet 10 behöver kunna utföra rörel- ser i längdled, dvs. om sätet 12 inte behöver kunna längsförflyttas utefter fordonsgol- vet, inses att inte varje led behöver vara en skjutled 24 utan t.ex. de bakre fyra leder- na 24' kan vara enbart svängleder, fast anordnade vid längsstyrningarna 30.The lower pair of longitudinal guides 30 are intended to be connected to a vehicle floor 18 (Fig. 2). Unless the chassis 10 needs to be able to perform longitudinal movements, ie. if the seat 12 does not need to be able to be moved longitudinally along the vehicle floor, it will be appreciated that not every joint needs to be a sliding joint 24 but e.g. the rear four joints 24 'may be only pivot joints, fixedly arranged at the longitudinal guides 30.

Underredet 10 har vidare en svängningsdämpare 40 som l utföringsex- emplet i FIG. 1 och 2 verkar mellan underredet 10 och fordonsgolvet 18. Sväng- ningsdämparen 40 kan här och i andra utföringsformer på ej närmare visat känt sätt vara en fjäder eller en kombinerad fjäder-dämpare.The chassis 10 further has a vibration damper 40 as shown in the embodiment of FIG. 1 and 2 act between the chassis 10 and the vehicle floor 18. The vibration damper 40 may here and in other embodiments in a manner not shown in more detail shown, be a spring or a combined spring damper.

Det inses att det så långt beskrivna underredet 10 på i och för sig känt sätt kan utföra rörelser i höjdled, för höjdinställning av sätet eller för att dämpa verti- kala svängningar som verkar mellan fordonsgolvet 18 och sätet 12.It will be appreciated that the chassis 10 so far described in a manner known per se may perform movements in height, for height adjustment of the seat or to dampen vertical oscillations acting between the vehicle floor 18 and the seat 12.

Lederna 24 och 24' är enligt uppfinningen även svängbart lagrade om- kring längsgående axlar vid längsstyrningarna 30, i utföringsexemplen glidskenornas 30 axlar 28 (FlG. 4). Som särskilt framgår av FIG. 2, tillåts underredet 10 då även utföra svängrörelser i sidled. Dessa svängrörelser i sidled kan dämpas av ytterligare 10 15 20 25 30 få 554 4 en schematiskt framställd svängningsdämpare 40, som verkar t.ex. mellan en hytt- struktur 19 och sätet 12.According to the invention, the joints 24 and 24 'are also pivotally mounted around longitudinal axes at the longitudinal guides 30, in the embodiments the axes 28 of the slide rails 30 (Fig. 4). As can be seen in particular from FIG. 2, the chassis 10 is then also allowed to perform lateral turning movements. These lateral pivotal movements can be damped by further obtaining a schematically produced vibration damper 40, which acts e.g. between a cab structure 19 and the seat 12.

Fastän en eller flera linjära dämpare 40 på ej visat sätt kan sträcka sig vertikalt mellan ett par längsstyrningar, illustreras i utföringsformen enligt FIG. 3 möj- ligheten att låta linjära svängningsdämpare 40 verka diagonalt mellan längsstyrning- arna 30. Även om en enda diagonal svängningsdämpare 40 kan vara tillräcklig för att dämpa svängningar i såväl höjd- som sid(/roll)led, kan två diagonalt korsade dämpa- re 40 tillhandahålla en mer likformig dämpverkan på underredet 10. Dämparna 40 behöver inte vara förbundna med längsstyrningarna 30, utan kan i stället sträcka sig mellan lederna 24 och/eller 24' (ej visat). l utföringsformen av underredet 10 visad i FIG. 4 är dämparen 40 inte- grerad med ett par av saxlänkarmarna 22. Dämparen 40 kan i detta fall vara bildad i ett stycke som en huvudsakligen U-formad krängningshämmare med ett bottenstycke i form av en torsionsfjäder 42. Denna dämpare 40 kan även verka i sidled genom inneboende böjelasticitet hos saxlänkarmarna 22. Detta underrede 10 kan även på ej visat sätt ha en eller flera vertikala eller diagonala, kompletterande dämpare 40 enligt utföringsformen som beskrivs i samband med FlG. 3. l utföringsformen av underredet 10 visad i FIG. 5 'ar saxlänksmekanis- merna 20 vinklade konvergerande uppåt. Därigenom kommer vid sidosvängningar det på underredet 10 monterade sätet 12 att utföra en pendlande rörelse omkring en virtuell längsgående axel lokaliserad nedanför sätet 12. Om i ett omvänt fall enligt utföringsformen visad i FIG. 6 saxlänksmekanismerna 20 är vinklade konvergerande nedåt, kommer sätet 12 vid sidosvängningarna i stället att utföra en pendlande rörel- se omkring en virtuell längsgående axel lokaliserad ovanför sätet 12. Som schema- tiskt antyds i FlG. 5, kan typ och grad av konvergens hos saxlänksmekanismerna inställas efter önskemål genom ett ställdon 50, såsom en skruvmekanism. Vidare kan vara anordnad en länk 52 mellan de undre längsstyrningarna 30 för att synkronisera saxlänkmekanismernas 20 rörelser. Utföringsformerna enligt FIG. 5 och 6 kan även tillämpas på samtliga ovan beskrivna utföringsformer av uppfinningen.Although one or more linear dampers 40 may in a manner not shown extend vertically between a pair of longitudinal guides, illustrated in the embodiment of FIG. 3 the possibility of allowing linear vibration dampers 40 to act diagonally between the longitudinal guides 30. Although a single diagonal vibration damper 40 may be sufficient to dampen oscillations in both height and side (/ roll) directions, two diagonally crossed dampers can 40 provide a more uniform damping effect on the chassis 10. The dampers 40 need not be connected to the longitudinal guides 30, but may instead extend between the joints 24 and / or 24 '(not shown). In the embodiment of the chassis 10 shown in FIG. 4, the damper 40 is integrated with a pair of scissor link arms 22. The damper 40 can in this case be formed in one piece as a substantially U-shaped anti-roll bar with a bottom piece in the form of a torsion spring 42. This damper 40 can also act laterally by inherent flexural elasticity of the scissor link arms 22. This chassis 10 may also, in a manner not shown, have one or more vertical or diagonal, additional dampers 40 according to the embodiment described in connection with F1G. 3. In the embodiment of the chassis 10 shown in FIG. 5 'the scissor link mechanisms 20 are angled upwards converging. Thereby, in the case of lateral oscillations, the seat 12 mounted on the chassis 10 will perform a oscillating movement about a virtual longitudinal axis located below the seat 12. If in a reverse case according to the embodiment shown in FIG. 6 the scissor link mechanisms 20 are angled downwardly converging, the seat 12 at the lateral oscillations will instead perform a pivoting movement about a virtual longitudinal axis located above the seat 12. As schematically indicated in F1G. 5, the type and degree of convergence of the scissor link mechanisms can be adjusted as desired by an actuator 50, such as a screw mechanism. Furthermore, a link 52 may be provided between the lower longitudinal guides 30 to synchronize the movements of the scissor link mechanisms 20. The embodiments of FIG. 5 and 6 can also be applied to all the above-described embodiments of the invention.

Ovan detaljerade beskrivning är i första hand avsedd att underlätta för- ståelsen och några onödiga begränsningar av uppfinningen ska inte uttolkas därifrån.The above detailed description is primarily intended to facilitate understanding and any unnecessary limitations of the invention should not be construed as such.

Exempelvis behöver inte lederna 24 (eller 24') vara skjutleder för att tillåta förflyttning av de tvärgående axlarna 26, utan kan på ej visat sätt ersättas av oförskjutbara svängleder förbundna med saxlänkarmarnas ändar via extra länkarmar som tillåter 53% E54 5 denna förflyttning. Andra modifikationer som blir uppenbara för en fackman vid genomgång av beskrivningen kan genomföras utan awikelse från uppfinningstanken eller omfånget av efterföljande patentkrav.For example, the joints 24 (or 24 ') do not have to be sliding joints to allow for the displacement of the transverse shafts 26, but can in a manner not shown be replaced by non-displaceable pivot joints connected to the ends of the scissor link arms via additional link arms which allow 53% E54 5 this movement. Other modifications which become apparent to one skilled in the art upon review of the specification may be made without departing from the spirit of the invention or the scope of the appended claims.

Claims (8)

ïšíšlí 554 6 PATENTKRAVïšíšlí 554 6 PATENTKRAV 1. Stolsunderrede (10) innefattande ett par på inbördes sidoavstånd anord- nade saxlänksmekanismer (20) med övre och undre ändar svängbart lagrade om- kring tvärgående axlar (26) för att tillåta vertikalrörelse hos underredet (10), k ä n - n e t e c k n a t av att saxlänksmekanismernas (20) övre och undre ändar dessut- om är anordnade svängbart lagrade omkring längsgående axlar (28) för att tillåta si- dorörelse hos underredet (10).A chair base (10) comprising a pair of mutually spaced scissor link mechanisms (20) with upper and lower ends pivotally mounted about transverse axes (26) to allow vertical movement of the base (10), characterized by that the upper and lower ends of the scissor link mechanisms (20) are also arranged pivotally mounted about longitudinal axes (28) to allow lateral movement of the chassis (10). 2. Stolsunderrede enligt krav 1, innefattande en svängningsdämpare (40) för att begränsa nämnda sidorörelse.A seat base according to claim 1, comprising a vibration damper (40) for restricting said lateral movement. 3. Stolsunderrede enligt krav 2, varvid svängningsdämparen innefattar en dämpare (40) verkande diagonalt på underredet (10) mellan en undre och en övre av de längsgående axlarna (30).A seat base according to claim 2, wherein the vibration damper comprises a damper (40) acting diagonally on the base (10) between a lower and an upper of the longitudinal axes (30). 4. Stolsunderrede enligt krav 3, varvid svängningsdämparen (40) innefattar en ytterligare dämpare (40) verkande diagonalt mellan en andra undre och en andra övre av de längsgående axlarna (30).A seat base according to claim 3, wherein the vibration damper (40) comprises a further damper (40) acting diagonally between a second lower and a second upper of the longitudinal axes (30). 5. Stolsunderrede enligt något av föregående krav, varvid en saxlänkarm (22) hos en av saxlänksmekanismerna (20) och en motsvarande saxlänkarm (22) hos den andra av saxlänksmekanismerna (20) är förenade genom en torsionsfiäder (20) vid ett par av sina ändar.A chair base according to any one of the preceding claims, wherein a scissor link arm (22) of one of the scissor link mechanisms (20) and a corresponding scissor link arm (22) of the other of the scissor link mechanisms (20) are connected by a torsion spring (20) at a pair of their ends. 6. Stolsunderrede enligt något av föregående krav, varvid saxlänksmeka- nismernas (20) undre ändar är anordnade på större inbördes sidoavstånd än deras övre ändar.A chair base according to any one of the preceding claims, wherein the lower ends of the scissor link mechanisms (20) are arranged at greater mutual lateral distances than their upper ends. 7. Stolsunderrede enligt något av krav 1-5, varvid saxlänksmekanismernas (20) övre ändar är anordnade på större inbördes sidoavstånd än deras undre ändar.A chair base according to any one of claims 1-5, wherein the upper ends of the scissor link mechanisms (20) are arranged at greater mutual lateral distances than their lower ends. 8. Stolsunderrede enligt något av krav 6 och 7, innefattande ett ställdon (50) för inställning av sidoavståndet,A chair base according to any one of claims 6 and 7, comprising an actuator (50) for adjusting the side distance,
SE0702384A 2007-10-26 2007-10-26 chair base SE531594C2 (en)

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SE0702384A SE531594C2 (en) 2007-10-26 2007-10-26 chair base
PCT/SE2008/051191 WO2009054788A1 (en) 2007-10-26 2008-10-23 Scissor-arm suspension for vehicle seat allowing sidewise movement of the seat

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