Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
  • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
  • B60N3/06—Arrangements or adaptations of other passenger fittings, not otherwise provided for of footrests
  • B60N3/063—Arrangements or adaptations of other passenger fittings, not otherwise provided for of footrests with adjustment 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
  • B60N2/90—Details or parts not otherwise provided for
  • B60N2/995—Lower-leg-rests, e.g. calf-rests

Definitions

• the invention relates to a vehicle seat according to the features of the preamble of claim 1.
• the German patent application 24 01 241 shows a rear seat for vehicles.
• the seat has a backrest that can be tilted using a reclining seat fitting and an extendable footrest.
• the seat can be moved from an upright sitting position by tilting the backrest and pulling out the footrest to a lying position.
• this seat offers inadequate body support in the reclined position and thus insufficient comfort.
• very large and / or very small people are only insufficiently supported in the lying position.
• a vehicle seat which has a seat depth adjustment.
• An adjustment element is embedded in the front area of the seat, which can be moved between an extended position that increases the seat depth and a retracted position with a small seat depth.
• this seat only offers a less relaxing upright sitting position.
• DE 198 01 893 AI shows another motor vehicle seat with an adjustable seat depth.
• This has a seat cushion that is pulled down around the front edge of the seat surface as a seat depth reserve, which can be extended or retracted accordingly when the seat depth is adjusted.
• This seat also only offers an upright sitting position.
• the object of the invention is to provide a vehicle seat which is compact and has a high level of comfort. In particular, the seat should have the same level of comfort for people of different sizes.
• the vehicle seat has a seat cushion that has an adjustable seat depth and an adjustable inclination.
• the seat can be adjusted in many ways. When the lower leg support is folded away and / or the backrest is raised and / or the seat cushion is level, the vehicle seat has a comfortable upright sitting position. If the backrest is brought into the resting position, the seat is inclined and the lower leg support is raised, the vehicle seat is in a comfortable lying and / or resting position.
• the seat cushion has a continuous seat cushion which is designed to cushion the lower leg support and the seat cushion. This creates a fully upholstered seat that has no gap and thus offers comfortable support for the seated person, especially the thighs and lower legs.
• the seat cushion preferably has a closed cushion surface with a cover, for example made of leather and / or fabric and / or plastic.
• the lower leg support In order to take up as little installation space as possible in a comfortable, upright sitting position, the lower leg support is designed in such a way that it has a space-saving stowed position and an extended use position. In the stowed position, the lower leg support can be arranged close to the seat cushion, so that an upright sitting position is possible without having to put up with an impairment of the available foot space.
• the vehicle seat is optimally adjustable thanks to the support of the body with an adjustable seat cushion and seamless leg support. People of different sizes can always adjust the seat so that it has a seat that is precisely matched to the respective body mass. This setting has a very large contact surface between the seated person and the seat and is perceived by the seated person as the most comfortable setting due to the support of the whole body. At the same time, the seated person is also very well supported in the event of a crash, since the forces which arise can be absorbed over a large area by the seat cushion and the backrest as a result of the extensive body support.
• one end of the seat cushion is firmly connected to the seat cushion, in particular in the area of the backrest, and that the other end of the seat cushion is connected to the latter via a slide which is displaceably mounted on the lower leg support.
• the seat cushion is moved relative to the seat surface.
• the seat cushion can now move, so that excessive tensioning and / or hardening due to compression of the seat cushion is avoided.
• a force which is as constant as possible is applied to the seat cushion or the slide in order to keep the seat cushion under tension.
• the slide or the seat cushion is subjected to a tensile force via a drawstring attached to the frame of the seat cushion. Due to the different articulation and / or guidance of the drawstring in the Compared to the seat cushion, they cover different distances when adjusting the seating position. To compensate for these differences, the drawstring can have a spring or a rubber band.
• the drawstring has a deflection device which is connected to the inclination adjustment device of the lower leg support and / or the seat cushion depth adjustment device and is designed to compensate for the different distances. In this way, a constant force can be introduced into the seat cushion in all seat positions, preferably a constant contact of the seat cushion can be achieved.
• the seat cushion has a two-part frame that supports the seat cushion.
• a fixed holding frame is firmly connected to the seat cushion and supports a support profile that can be extended or retracted to adjust the seat depth. By retracting or extending the support profile, the seat depth can be adjusted and thus optimally adapted to the thigh length of the seated person.
• the lower leg support is pivotally mounted on the support profile. This directly adjoins the seat surface, so that continuous and / or complete support of the thigh and lower leg is guaranteed.
• the lower leg support can be designed as a telescopic lower leg support. Their length can be varied using an electric spindle drive and thus adapted to the length of the lower leg. By adjusting the inclination, the seated person can choose the height and / or inclination of the lower leg support that is comfortable for him.
• vehicle seat according to the invention it is possible to use the vehicle seat according to the invention in passenger cars, buses, as well as water or rail vehicles. Use of the vehicle seat according to the invention as a comfortable passenger armchair in aircraft is also provided.
• FIG. 1 an illustration of the vehicle seat in an upright sitting position
• FIG. 2 an illustration of the vehicle seat in the lying position
• FIG. 3 a schematic side view of the vehicle seat with a seated person
• FIG. 4 an illustration of the seat cushion frame
• FIG. 5 an illustration of the lower leg support
• FIG. 6 an illustration of the telescopic drive with the lower leg support retracted
• FIG. 7 an illustration of the telescopic drive with the lower leg support extended
• Figures 8-11 each a representation of the deflection device with a drawstring in different positions.
• the vehicle seat 1 shows the vehicle seat 1 in an upright sitting position. It has a backrest 11 with a headrest 12 and a seat cushion 2 with a lower leg support 3.
• the vehicle seat 1 is connected to rails 14 in a vehicle, e.g. in the rear of a passenger car, slidably mounted.
• a belt holder 13 is integrated for a three-point belt.
• the backrest 11 and the seat cushion 2 have a cushion with a leather cover.
• the seat cushion cushion 25 cushions the seat cushion and the lower leg support 3 and is designed to be continuous. It forms a coherent padded seat.
• the lower leg support 3 is arranged in a space-saving manner in the illustrated upright sitting position against the front area of the seat cushion. This stowed position does not affect the footwell in the vehicle.
• FIG. 2 shows the vehicle seat 1 in a resting or lying position.
• the vehicle seat 1 was moved forward on the rails 14 in order to gain space for pivoting the backrest 11 back.
• the lower leg support 3 is extended forward into a use position in this illustration. It was swung forward and extended to form a good support for the lower legs.
• a foot plate 38 is arranged at the lower end of the lower leg support 3. It is unfolded in the use position and offers comfortable support for the feet.
• the seat cushion 25 cushions the seat cushion 2 and the lower leg support 3. It is attached at one end to the seat cushion and at the other end to a sled 31 which is attached to the
• Lower leg support 3 is guided. It has a continuous and gap-free upholstery surface that is only contoured by filing the cover fabric.
• FIG. 3 illustrates the resting and / or lying position of the vehicle seat 1.
• the backrest 11 is pivoted back about an axis arranged transversely to the seat surface.
• the seat surface of the seat cushion 2 is inclined upwards in that a seat cushion inclination adjustment device 26 engaging between the rail 14 and a seat cushion frame 21 has raised the front end of the seat cushion 2.
• the lower leg support 3 is arranged directly at the front end of the seat cushion 2. It has a three-part telescope 32, 33, 34 which can be extended to support the lower leg.
• a fold-out foot plate 38 is arranged, which is designed to support the feet.
• the length of the lower leg support 3 is adapted to the length of the lower leg.
• the seat cushion depth is also adapted to the length of the thighs.
• the pivot point of the knees is above the pivot point 28 of the lower leg support 3.
• the back is in contact with the backrest 11.
• the vehicle seat 1 reproduces the anatomy of the body in that the seat surface can be adapted to the length of the upper and lower leg and on the other hand, the pivot point 28 of the lower leg support 3 and the knee and the pelvic support correspond to the anatomy of the seated person or can be adapted to this.
• the body is thus optimally supported and the vehicle seat 1 has a large contact surface for the body.
• the seat cushion frame 21 is shown in detail in FIG. It is constructed in several parts and has on the left and on the right side a holding frame 22 which is pivotally mounted on the rail 14 via a pivot bearing 58.
• the holding frame 22 in turn supports a support profile 23 which can be moved linearly to adjust the seat depth.
• the rail 14 arranged on both sides of the seat is each formed in two parts and has a lower part 14b firmly screwed to the vehicle and a displaceable upper part 14a. Each upper part 14a holds a holding frame 22 via a pivot bearing 58.
• the holding frame 22 has a profile which encompasses the support profile 23 in a form-fitting manner.
• the support profile can be moved into the holding frame 22 or removed from the holding frame 22.
• the support profile has at its front end a receptacle 27 in which the lower leg support 3 is rotatably fastened.
• the receptacles 27 of the two support profiles 23 form the axis of rotation 28 of the lower leg support 3.
• the lower leg support 3 is arranged directly on the seat cushion 2 and, on the other hand, it ensures that when the seat cushion depth and / or the seat cushion inclination is adjusted, the axis of rotation 28 of the lower leg support 3 is adjusted with.
• FIG. 5 shows the lower leg support 3 on the one hand in the stowed position with the telescope 32, 33, 34 retracted and on the other hand in the use position with the telescope 32, 33, 34 extended connected. It has a three-part telescope with an upper 32, a middle 33 and a lower telescope element 34.
• the base plate 38 is pivotally attached to the lower telescopic element 34.
• the telescopic elements are designed and dimensioned so that they are largely are movable into each other, the top telescopic element 32 receiving the others. In this way, the lower leg support 3 requires only a small storage space in the stowed position and at the same time has a large usable length in the use position.
• the upper telescopic element 31 has laterally arranged guides which hold the slide 31.
• the upper side of the slide 31 facing the seat cushion 25 has attachments for fastening the seat cushion 25.
• the slide 31 is connected to a tension band 55, which applies a constant force, directed towards the footplate, for tensioning
• the drive In order to be able to adjust the length of the lower leg support 3 simply and comfortably, it has an electric drive.
• This drive is shown in FIG. 6 when the telescope is retracted and in FIG. 7 when the telescope is extended.
• the drive is designed as a spindle drive and has an electric drive motor 35 which drives a first spindle drive 36 and a second spindle drive 37.
• the drive is connected to the central telescopic element 33 via a bridge.
• the first spindle drive 36 engages between the middle telescopic element 33 and the upper telescopic element 32 and the second spindle drive 37 engages between the middle telescopic element 33 and the lower telescopic element 34.
• the spindle drive 36, 37 moves the upper 32 and the lower telescopic element 34 synchronously away from the central telescopic element 33 or towards the central telescopic element 33.
• the electric drive motor 35 drives a first spindle nut 41 via a gear, which is connected to the first spindle drive.
• This first spindle nut 41 meshes with a second spindle nut 42, which is connected to the second spindle drive 37. Due to the meshing spindle nuts, the electric motor 35 drives the second spindle drive 37 in the opposite direction of rotation to the first spindle drive 36.
• the electric motor 35 drives the telescopic elements 32, 33, 34 in such a way that the upper telescopic element 32 and the lower telescopic element 34 move away from the middle telescopic element 33 in one direction of rotation and the upper telescopic element 32 and the lower telescopic element 34 to the middle in the opposite direction of rotation Telescopic element 33 is driven out.
• FIGS. 8 to 11 show the deflection device 5 which guides the tension band 55.
• One end of the drawstring 55 is connected to the slide 31.
• the other end of the drawstring 55 is fastened to the holding frame 22 of the seat cushion 2 at a fixed point 52.
• the tension band 55 acts on the slide 31 and thus the seat cushion 25 with a constant force for the defined tensioning of the seat cushion 25.
• the seat cushion 25 moves relative to the seat frame. In order to be able to introduce a constant force for tensioning the seat cushion 25 in different sitting positions, the drawstring must be adjusted.
• the deflection device Since the drawstring 55 is guided in the seat in other ways, the deflection device has a compensating lever 51 which is rotatably mounted about an axis of rotation 53. This compensating lever 51 is connected to the inclination adjustment device 39 of the lower leg support 3 and equalizes the different paths of the seat cushion 25 and the drawstring 55 when the
• the compensating lever 51 is pivoted about the axis of rotation 53 as a function of the angle of inclination of the lower leg support 3 and thus takes the drawstring 55 more or less tapeless.
• FIG. 8 shows the deflection device 5 with a small seat depth and pivoted downward into the stowed position
• Lower leg support 3 In FIG. 9, the lower leg support 3 is in the stowed position as in FIG. 8, but the seat depth is increased.
• the support profile is extended and displaces a deflection cushion 54 that supports the seat cushion 25, so that results in a greater seat depth. Since there is no path difference between the tension band 55 and the seat cushion 25 during the linear displacement, the compensating lever 51 is also displaced linearly by the same path as the support cushion 54.
• FIG. 10 shows the deflection device 5 with the lower leg support 2 pivoted up and the seat depth being great.
• the compensating lever 51 is pivoted about the axis of rotation 53. In this way, the path difference that arises as a result of the different bending radii of the seat pole 25 and the tension band 55 is compensated for.
• FIG. 11 the deflection device 5 is shown with the lower leg support 2 pivoted up and the seat depth being small. Since there is no path difference between the seat cushion 25 and the drawstring 55 as a result of the purely linear movement, the compensating lever 51 is moved linearly together with the support cushion 54 by the support profile 23.

Landscapes

• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Aviation & Aerospace Engineering (AREA)
• Seats For Vehicles (AREA)
• Chair Legs, Seat Parts, And Backrests (AREA)
• Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7713991

Family Applications (1)

Country Status (5)

Families Citing this family (28)

Family Cites Families (9)

• 2002
  • 2002-03-04 DE DE10209185A patent/DE10209185C1/de not_active Expired - Fee Related
• 2003
  • 2003-02-08 JP JP2003572805A patent/JP2005518887A/ja not_active Abandoned
  • 2003-02-08 US US10/506,496 patent/US20060186721A1/en not_active Abandoned
  • 2003-02-08 WO PCT/EP2003/001266 patent/WO2003074318A1/de not_active Application Discontinuation
  • 2003-02-08 EP EP03704577A patent/EP1480849A1/de not_active Withdrawn

Non-Patent Citations (1)

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