EP1480853A1 - Fahrzeugsitz mit unterschenkelstütze - Google Patents

Fahrzeugsitz mit unterschenkelstütze

Info

Publication number
EP1480853A1
EP1480853A1 EP03704578A EP03704578A EP1480853A1 EP 1480853 A1 EP1480853 A1 EP 1480853A1 EP 03704578 A EP03704578 A EP 03704578A EP 03704578 A EP03704578 A EP 03704578A EP 1480853 A1 EP1480853 A1 EP 1480853A1
Authority
EP
European Patent Office
Prior art keywords
lower leg
leg support
sensor
vehicle seat
drive
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.)
Withdrawn
Application number
EP03704578A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hans Edrich
Gerhard Flory
Thomas Gundall
Klaus Hassler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1480853A1 publication Critical patent/EP1480853A1/de
Withdrawn legal-status Critical Current

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
    • B60N2/62—Thigh-rests
    • 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
    • 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

Definitions

  • the invention relates to a vehicle seat according to the features of the preamble of claim 1.
  • the German utility model G 92 00 777.5 shows an omnibus seat with a footrest.
  • the footrest is articulated to the seat cushion of the bus seat via a parallelogram linkage.
  • a gas spring interacts with the parallelogram linkage to fold the footrest from a stowed position below the seat cushion to a use position.
  • a control device for a seat back is known from DE 39 10 778 C2.
  • the control device controls an adjusting device that adjusts the inclination of the seat back. If the control device detects an obstacle when the seat back is tilted, it stops the tilt movement of the seat back.
  • the object of the present invention is to provide a vehicle seat with an adjustable lower leg support which is compact, has a comfortable sitting position and is simple and safe to use.
  • the vehicle seat should have a high level of operational safety.
  • the lower leg support of the vehicle seat has an automatic drive.
  • a control device with a sensor is connected to the drive for controlling the lower leg support.
  • the sensor is designed to detect an obstacle. The risk of getting caught and / or damaged and / or the risk of injury when the lower leg support is adjusted automatically or in the event of incorrect operation can be at least partially reduced or completely prevented.
  • the drive is designed for automatic, preferably stepless adjustment of the lower leg support, preferably for moving the lower leg support from a space-saving stowage position into a use position and / or from a use position into the stowage position.
  • the drive can also be used to adjust and / or adjust the seating position as required.
  • the stowed position is arranged close to the seat, so that the vehicle seat takes up as little installation space as possible.
  • the control device is preferably designed such that it recognizes the stowed position of the lower leg support as a zero position, which serves the reference position for determining the position of the lower leg support.
  • the lower leg support In the position of use, the lower leg support is pivoted into the footwell and forms a comfortable support and / or support for the lower legs and / or the feet of the seated person.
  • the control device calculates the position of the lower leg support in the use position via the swivel angle and / or the travel path.
  • the lower leg support is pivoted by the drive about a pivot axis running transversely to the vehicle seat.
  • the length of the lower leg support can be varied, in particular the contact surface of the lower leg can be increased by lengthening the lower leg support.
  • the sensor is arranged on the free end of the lower leg support.
  • the sensor can be designed as a proximity sensor, preferably an inductive or capacitive proximity sensor and / or as a pressure sensor, preferably as a piezo element and / or switch strip.
  • a proximity sensor preferably an inductive or capacitive proximity sensor and / or as a pressure sensor, preferably as a piezo element and / or switch strip.
  • Control device stops the drive when the sensor detects an obstacle. However, it is also possible for the control device to stop and / or at least partially reverse the drive in order to avoid pinching and / or damage to the lower leg support and / or the obstacle.
  • the sensor can also be designed to determine the maximum possible travel of the lower leg support.
  • the control device extends the lower leg support by actuating the drive until it reaches an end position, ie. H. comes into contact with vehicle installations or seats.
  • the sensor detects this end position so that the control device can recognize and / or save the maximum possible adjustment path of the lower leg support.
  • tolerances between arrangements in the vehicle or vehicle internals and the travel path and / or the dimensions of the lower leg support can be detected and compensated for.
  • the sensor recognizes the setting position with the largest possible travel distance and thus limits the travel distance in this end position.
  • 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. Also a use of the Vehicle seat according to the invention is provided as a comfortable passenger armchair in aircraft.
  • Figure 1 a representation of the vehicle seat
  • FIG. 2 shows a sectional illustration of the lower leg support in the stowed position
  • FIG. 3 a schematic representation of the structure of the lower leg support
  • Figure 4 is a sectional view of the sensor.
  • FIG. 1 shows a vehicle seat 1. 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 slidably mounted on rails 14 in a vehicle, for example in the rear of a passenger car.
  • a belt holder 13 is integrated for a three-point belt.
  • the back 11 and the seat cushion 2 each have a cushion with a cover material, preferably leather.
  • the seat cushion cushion 21 cushions the seat cushion 2 and the lower leg support 3 and is designed to be continuous. It forms one at the top contiguous padded seat, which extends from the seat cushion 2 to the lower leg support 3.
  • the lower leg support 3 is shown in the rest or use position shown in Figure 1 forward. It was swiveled upwards and moved apart to enlarge its contact area for the lower legs.
  • the lower leg support 3 has a three-part telescope with an upper telescopic element 32, a central telescopic element 33 and a lower telescopic element 34. To vary the length of the lower leg support 3, the telescopic elements 32, 33, 34 can be telescoped via an electric drive 5.
  • a footrest 4 is arranged at the lower end of the lower leg support 3. It is connected to the lower telescopic element 34 and has a footplate 41 mounted on a crossbar 42, which is folded out into the use position and offers comfortable support for the feet.
  • the foot plate 41 can be pivoted about an axis of rotation running transversely to the lower leg support 3 and is approximately perpendicular to the lower leg support 3 in the use position.
  • One end of the lower leg support 3 is connected to the seat cushion 2.
  • the inclination of the lower leg support 3 relative to the seat cushion 2 can be adjusted via an inclination adjuster 35 with an electric drive motor.
  • the other end of the lower leg support can be moved freely and supports the footrest 4.
  • a sensor 6 for detecting obstacles in the travel path of the lower leg support 3 is arranged at the free end.
  • the vehicle seat 1 In addition to the resting or lying position shown in FIG. 1, the vehicle seat 1 also has other sitting positions, preferably also an upright sitting position with the lower leg support 3 retracted and the footrest 4 folded.
  • the stowed position with the lower leg support 3 retracted and the footrest 4 folded in is shown in FIG.
  • the telescopic elements 32, 33, 34 of the lower leg support 3 are pushed into one another and at the front end of the seat cushion 2 arranged approximately vertically downwards.
  • an inclination adjuster 35 is arranged, which connects the lower leg support 3 to the seat cushion 2.
  • the inclination control 35 has an electric motor for adjusting the inclination of the lower leg support 3.
  • the foot plate 41 is arranged parallel to the lower leg support 3 and, together with the seat cushion 21, forms a flat front surface which closes the vehicle seat towards the front.
  • the back of the footplate 41 is flush with the top of the seat cushion 21, so that the vehicle seat has no protruding edges and / or the footplate 41 cannot be folded forward accidentally.
  • the lower leg support 3 and the footrest 4 are arranged in the stowed position against the front area of the seat cushion 2. This stowed position is space-saving and does not affect the footwell in the vehicle.
  • the sensor 6 is arranged at the lower end of the lower leg support 3 and has two sensor surfaces 61, 62.
  • the first sensor surface is arranged on the end face of the lower leg support 3 and is designed to detect obstacles which lie in the travel path thereof when the lower leg support 3 is linearly extended.
  • the second sensor surface 62 is on the back of the lower leg support 3, i. H. arranged on the side facing away from the lower leg support surface. It is designed to detect obstacles that lie in the travel path when the lower leg support 3 is pivoted.
  • FIG. 3 shows the schematic structure of the lower leg support 3 with drive 5.
  • the drive 5 is designed as a spindle drive and has an electric drive motor 51 which drives a first spindle drive 56 and a second spindle drive 57.
  • the drive 5 is connected to the central telescopic element 33 via a bridge.
  • the first spindle drive 56 engages between the middle telescopic element 33 and the upper telescopic element 32 and the second spindle drive 57 engages between the middle telescopic element 33 and the lower telescopic element 34.
  • the spindle drive 56, 57 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 51 drives the first spindle drive 56 and the second spindle drive 57 in opposite directions via a gear.
  • the electric motor 51 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.
  • the drive motor 51 is connected to a control device 52.
  • the control device 52 controls the drive motor 51 and / or the tilt actuator 35 and thus the movement sequence of the lower leg support 3
  • Control device 51 is connected to the sensor 6 for detecting obstacles, which is at the lower end of the
  • Lower leg support 3 is arranged.
  • the control device 52 is connected via cable to the sensor 6 and also to the drive motor 51 and the tilt actuator 35.
  • the control device 52 has a power supply line.
  • a cable guide 53 connected to the central telescopic element 33 prevents the cables from getting tangled and / or being damaged when the lower leg support 3 moves.
  • the cable guide 53 has a spring-loaded cable drum that automatically rolls up or unrolls the guided cables. The cable guide 53 thus receives the wireless ones and holds the cables under pre-tension, so that the cables are not tangled and / or rattling.
  • the sensor 6 If the sensor 6 detects an obstacle, it sends a signal to the control device 52, which then stops the movement the lower leg support 3 and moves it back a little to avoid pinching and / or damage to the obstacle.
  • the sensor 6 is shown in FIG. It is arranged on the crossbar 42 of the lower telescopic element 34.
  • a first sensor surface 61 is arranged on the end face and a second sensor surface 62 on the rear side of the crossbar 42.
  • the sensor surfaces 61, 62 extend over a large part of the width of the lower leg support 3 and are designed as pressure-sensitive switch strips.
  • the sensor 6 has an electrically conductive contact film 65, which is connected to the crossbar 42 across an area via an insulator 64.
  • An electrically conductive switching strip 66 is arranged at a distance from the contact strip 65 via foam inserts 67 designed as spacers. If pressure is exerted on the switching strip 66, the foam insert 67 is pressed over and the switching strip 66 comes into electrically conductive contact with the contact strip 65.
  • An elastic rubber strip 63 covers the first button 61 and the second button 62.
  • the rubber strip 63 is clipped onto the crossbar 42 and holds the sensor 6 lying directly on the crossbar 42.
  • the rubber strip is connected to the sensor 6, so that only the rubber strip 63 with the sensor 6 has to be exchanged to replace the sensor 6.
  • the elasticity of the rubber strip 63 is dimensioned such that when it comes into contact with an obstacle, it distributes the pressure that occurs to the first sensor surface 61 and the second sensor surface 62. A reliable detection of an obstacle is thus achieved, even if the obstacle does not directly hit the first sensor surface 61 or the second sensor surface 62.
  • the sensor 6 is in the stowed position in contact with the vehicle seat 1. Thus, the sensor 6 detects the starting or zero position of the lower leg support 3. The zero position thus serves as a reference position for the control device 52, from which it uses the travel path to position the lower leg support determined.
  • control device can determine the end position of the lower leg support 3 by maximally extending the lower leg support until the lower leg support comes into contact with vehicle internals and the sensor 6 signals the end position.
  • the sensor 6 detects the maximum possible travel position and thus limits the maximum possible travel of the lower leg support 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Passenger Equipment (AREA)
EP03704578A 2002-03-04 2003-02-08 Fahrzeugsitz mit unterschenkelstütze Withdrawn EP1480853A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10209234A DE10209234B4 (de) 2002-03-04 2002-03-04 Fahrzeugsitz mit Unterschenkelstütze
DE10209234 2002-03-04
PCT/EP2003/001269 WO2003074322A1 (de) 2002-03-04 2003-02-08 Fahrzeugsitz mit unterschenkelstütze

Publications (1)

Publication Number Publication Date
EP1480853A1 true EP1480853A1 (de) 2004-12-01

Family

ID=27770936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03704578A Withdrawn EP1480853A1 (de) 2002-03-04 2003-02-08 Fahrzeugsitz mit unterschenkelstütze

Country Status (5)

Country Link
US (1) US20050173963A1 (ja)
EP (1) EP1480853A1 (ja)
JP (1) JP2005518985A (ja)
DE (1) DE10209234B4 (ja)
WO (1) WO2003074322A1 (ja)

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Also Published As

Publication number Publication date
DE10209234B4 (de) 2005-06-09
US20050173963A1 (en) 2005-08-11
WO2003074322A1 (de) 2003-09-12
JP2005518985A (ja) 2005-06-30
DE10209234A1 (de) 2003-09-25

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