DE2251948C3 - Suspended motor vehicle seat, in particular a driver's seat - Google Patents
Suspended motor vehicle seat, in particular a driver's seatInfo
- Publication number
- DE2251948C3 DE2251948C3 DE19722251948 DE2251948A DE2251948C3 DE 2251948 C3 DE2251948 C3 DE 2251948C3 DE 19722251948 DE19722251948 DE 19722251948 DE 2251948 A DE2251948 A DE 2251948A DE 2251948 C3 DE2251948 C3 DE 2251948C3
- Authority
- DE
- Germany
- Prior art keywords
- scissor
- seat
- links
- motor vehicle
- scissor links
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- B60N2/04—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
- B60N2/162—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
- B60N2/02—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
- B60N2/1635—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 drive mechanism
- B60N2/164—Linear actuator, e.g. screw mechanism
-
- 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
- B60N2/54—Seat suspension devices using mechanical springs
- B60N2/546—Leaf- or flexion springs
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Description
Die Erfindung bezieht sich auf einen abgefederten Kraftfahrzeugsitz, insbesondere Fahrersitz, dessen Sitzteil an einem Untergestell über beidseitig an ihm angeordnete, an ihrem mittleren festen Kreuzungspunkt mittels eines Gelenkzapfens miteinander verbundener Scherenlenker abgestützt ist, deren eine benachbarte Enden fest am Sitzrahmen bzw. am Untergestell gelagert und deren andere benachbarte Enden in am Sitzrahmen bzw. am Untergestell vorgesehenen Führungen längsverschiebbar sind, wobei zwischen zwei relativ zueinander bewegbaren, mit den Scherenlenkern verbundenen Teilen ein Federelement angeordnet ist.The invention relates to a sprung motor vehicle seat, in particular a driver's seat, the Seat part on an underframe over arranged on both sides at its central fixed intersection point is supported by means of a pivot pin connected to each other scissor links, one of which is adjacent Ends fixedly mounted on the seat frame or on the underframe and the other adjacent ends in on Seat frame or guides provided on the underframe are longitudinally displaceable, with between two A spring element is arranged which are movable relative to one another and are connected to the scissor link parts.
Bei den bekannten abgefederten Kraftfahrzeugsitzen dieser Art ist das als Torsionsfeder ausgebildete Federelement zwischen dem Sitzrahmen und den ortsfest an diesem gelagerten Enden der Scherenlenker angeordnet Die beim Einfedern aufzubringende Kraft pro Wegeinheit wird somit bei dieser bekannten Anordnung mit zunehmender Einfederungstiefe kleinen Die hier gegebene degressive Kennlinie des Federelementes ist jedoch insbesondere dann, wenn eine große Einfederungstiefe notwendig ist, sehr ungünstig.In the known sprung motor vehicle seats of this type, this is designed as a torsion spring Spring element between the seat frame and the ends of the scissors arm that are fixedly mounted on this The force to be applied per unit of travel during compression is thus known in this case Arrangement with increasing deflection depth small The degressive characteristic curve of the spring element given here however, it is very unfavorable, especially when a large deflection depth is necessary.
Der Erfindung liegt demgegenüber die Aufgabe zugrunde, einen abgefederten Kraftfahrzeugsitz derIn contrast, the invention is based on the object of providing a sprung motor vehicle seat
•ο eingangs genannten Art zu schaffen, bei dem die bei seinem Einfedern aufzubringende Kraft pro Wegeinheil über den gesamten Einfederungsbereich etwa gleich groß ist.• ο to create the type mentioned at the beginning, in which the at The force to be applied to its compression per unit of travel is approximately the same over the entire compression range is great.
Die Erfindung ist demgemäß derin zu sehen, daß die beiden Scherenlenker jedes Scherenlenkerpaares als beidseitig ihres festen mittleren Kreuzungspunktes symmetrisch zu dieseiii liegende, äußere Kreuzungspunkte bildende doppelkurvenförmige Bauteile ausgebildet sind, die Scherenlenker jedes Scherenlenkerpaares in diesen äußeren Kreuzungspunkten durch die beiden Scherenlenkerpaare miteinander verbindende, die Enden des Federelementes aufnehmende Querachsen unter Zwischenschaltung von Lagerelementen verschiebbar miteinander verbunden sind und der Krümmungsradius jedes Scherenlenkers im Bereich des mittleren festen Kreuzungspunktes am kleinsten ist und sich nach außen derart vergrößert, daß der Öffnungswinkel zwischen den sich von den äußeren Kreuzungspunkten aus nach außen erstreckenden freien Enden der Scherenlenker jedes Scherenlenkerpaares etwa konstantbleibt. The invention is accordingly to be seen that the two scissor links of each pair of scissor links as both sides of their fixed central intersection point symmetrical to these lying, outer crossing points forming double-curve-shaped components are, the arm of each pair of arm in these outer crossing points through the the two pairs of scissor links connecting the ends of the spring element with transverse axles are slidably connected to one another with the interposition of bearing elements and the The radius of curvature of each scissor link is smallest in the area of the central fixed intersection point and increases outward in such a way that the opening angle between the free ends of the Scissor link of each pair of scissor links remains approximately constant.
Es ist hierbei vorteilhaft, wenn die Scherenlenker im Querschnitt zumindestens im Bereich der äußeren Kreuzungspunkte als einander zugekehrte U-Profile ausgebildet sind und die die Schlitze in den Siegen der innenliegenden Scherenlenker durchgreifenden Enden der etwa mittig mit dem Federelement verbundenen Querachsen unter Zwischenschaltung von Kugellagern in den Scherenlenkern gelagert sind.It is advantageous here if the cross-section of the scissor link is at least in the area of the outer Crossing points are designed as facing U-profiles and the slots in the victories of the internal scissor link penetrating ends of the approximately centrally connected to the spring element Transverse axles are stored in the scissor links with the interposition of ball bearings.
Ein weiterer Vorteil ergibt sich dadurch, daß die Schercnlenker als Preßteile ausgebildet sind.Another advantage results from the fact that the shear links are designed as pressed parts.
Im folgenden ist die Erfindung anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher erläutert. Es zeigtThe invention is described in greater detail below with reference to an exemplary embodiment shown in the drawings explained. It shows
Fig. 1 den erfindungsgemäßen Kraftfahrzeugsitz in Seitenansicht,1 shows the motor vehicle seat according to the invention in a side view,
Fig. 2 die Ansicht in Richtung X gemäß Fig. I,
F i g. 3 die Ansicht in Richtung Kgemäß Fig. 1,
Fig.4 denn Schnitt nach der Linie IV-IV in Fig. 1
undFIG. 2 shows the view in the direction X according to FIG.
F i g. 3 the view in the direction K according to FIG. 1,
Fig.4 then section along the line IV-IV in Fig. 1 and
F i g. 5 den Ausschnitt A gemäß F i g. 1 in verschiedenen Einfcderungsstellungen.F i g. 5 shows section A according to FIG. 1 in various promotional positions.
Der erfindungsgemäße Kraftfahrzeugsitz weist ein auf einem Sitzrahmen 4 angeordnetes Sitzteil 2 und eine schwenkbar mit diesem verbundene Rückenlehne 3 auf. Der Sitzrahmen 4 ist über an seinen beiden Längsseiten vorgesehene, durch Scherenlenker 7 und U gebildete Scherenlenkerpaare an einem fahrzeugfesten Untergestell 15 abstützt. Die einander benachbarten hinteren Enden der Scherenlenker 7 und 11 sind am Sitzrahmen 4 bzw. an dem Untergestell 15 über Zapfen 5 bzw. 13 ortsfest angelenkt, während die einander benachbarten vorderen Enden der beiden Scherenlenker 7 und 11 in Führungen 18 bzw. 16 am Sitzrahmen 4 bzw am Untergestell 15 längsverschiebbar geführt sind.The motor vehicle seat according to the invention has a seat part 2 arranged on a seat frame 4 and a pivotally connected to this backrest 3. The seat frame 4 is over on both of its long sides provided, formed by scissor links 7 and U pairs of scissor links on a vehicle-fixed underframe 15 supports. The mutually adjacent rear ends of the scissor links 7 and 11 are on the seat frame 4 or hinged to the base 15 via pins 5 and 13, respectively, while the adjacent ones front ends of the two scissor links 7 and 11 in guides 18 and 16 on the seat frame 4 and on Underframe 15 are guided longitudinally.
Die Scherenlenker 7 und 11 sind als doppelkurvenförmige, im Querschnitt einander zugekehrte U-Profile aufweisende Bauteile ausgebildet, die mit ihremThe scissor links 7 and 11 are double-curved, in cross-section facing U-profiles having components formed with their
nittleren festen Kreuzungspunkt 9 mittels eines jelenkzapfens miteinander verbunden sind. In den
ymmetrisch zu den festen Kreuzungspunkten 9 legenden äußeren Kreuzungspunkten 2! und 23 der
icherenlenker 7 und 11 sind die an den beiden -ängsseiten des Sitzrahmens 4 li-.rjenden Scherenenkerpaare
durch Querachsen 26 und 27 miteinander 'erbunden, an denen mittig ein Federelement 25
ingreift Die beiden Enden jeder Querachse 26 und 27 lurchgreifen Schlitze 28 in den Stegen der innenliegenlen
Scherenlenker 11 und sind in diesen und den außen legenden Scherenlenkern 7 über Kugellager 30 und 29
;elagert.
Die als doppelkurvenförmige Bauteile ausgebildeten Scherenlenker 7 und 11 weisen im Bereich ihres
mittleren festen Kreuzlingspunktes 9 den kleinsten Krümmungsradius auf. Ihr Krümmungsradius vergrößert
sich, wie aus den eingezeichneten Krümmungsradien R und R' ersichtlich, nach außen derart, daß der
Öffnungswinkel λ zwischen den sich von den äußeren
Kreuzungspunkten aus nach außen erstreckenden freien Enden der Scherenlenker 7 und 11 jede.·: Scherenlenkerpaares
beim Einfedern des Kraftiahrzeugsitzes etwa konstant bleibt. Hierdurch bleibt die zum Einfedern des
Kraftfahrzeugsitzes aufzubringende Kraft pro Wegeinheit über den gesamten Einfederungsbereich des
Kraf:fahrzeugsitzes etwa gleich.middle fixed crossing point 9 are connected to one another by means of a pivot pin. In the outer crossing points 2, which are symmetrical to the fixed crossing points 9! and 23 of the handlebars 7 and 11 are linked to the left and right on the two longitudinal sides of the seat frame 4 by transverse axles 26 and 27, on which a spring element 25 engages in the middle the webs of the inner scissor links 11 and are in these and the outer laying scissor links 7 via ball bearings 30 and 29;
The scissor links 7 and 11, which are designed as double-curved components, have the smallest radius of curvature in the area of their central fixed intersection point 9. Their radius of curvature increases outwardly, as can be seen from the drawn radii of curvature R and R ' , in such a way that the opening angle λ between the free ends of the scissor links 7 and 11 extending outward from the outer intersection points each Kraftiahrzeugsitzes remains approximately constant. As a result, the force to be applied to compress the motor vehicle seat per unit of travel remains approximately the same over the entire compressive range of the force: vehicle seat.
Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722251948 DE2251948C3 (en) | 1972-10-23 | 1972-10-23 | Suspended motor vehicle seat, in particular a driver's seat |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722251948 DE2251948C3 (en) | 1972-10-23 | 1972-10-23 | Suspended motor vehicle seat, in particular a driver's seat |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2251948A1 DE2251948A1 (en) | 1974-05-02 |
DE2251948B2 DE2251948B2 (en) | 1977-07-14 |
DE2251948C3 true DE2251948C3 (en) | 1978-03-02 |
Family
ID=5859823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19722251948 Expired DE2251948C3 (en) | 1972-10-23 | 1972-10-23 | Suspended motor vehicle seat, in particular a driver's seat |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2251948C3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0026582B1 (en) * | 1979-09-29 | 1985-01-23 | H.R. Turner (Willenhall) Limited | An adjustment mechanism |
-
1972
- 1972-10-23 DE DE19722251948 patent/DE2251948C3/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2251948B2 (en) | 1977-07-14 |
DE2251948A1 (en) | 1974-05-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C3 | Grant after two publication steps (3rd publication) | ||
EHJ | Ceased/non-payment of the annual fee |