DE102018204486A1 - Motor vehicle with seat belt and movable seat - Google Patents

Abstract

For the purpose of improved protection of a vehicle occupant (15) located in a motor vehicle (1) seated on a seat (5) and restrained by a seat belt (20) in the event of a collision of the motor vehicle (1) in the seat (5) with the seat belt (20) at least partially guided through a D-ring (25) spaced from the seat (5), it is provided that the D-ring (25) is fixed to the body in the event of collision and the seat (5) are designed to be movable.

Description

The present invention relates to a motor vehicle with a seat belt and a movable seat according to claim 1.

It is generally known to firmly seat seats in a motor vehicle, in particular a driver's seat or a passenger's seat located in the front region of the motor vehicle. This means that in the event of a collision of the motor vehicle with respect to the motor vehicle body, the seats are essentially immovably mounted. To reduce or even prevent accidental injury to a vehicle occupant seated on such a seat, seatbelts are generally known, not least of which are guided by a D-ring which is spaced from the respective seat substantially at the level of the vehicle occupant's shoulder. Thus, the relative position of the D-ring and the vehicle seat is invariably set up in an accident situation.

It is an object of the present invention to provide a motor vehicle whose protective properties are further improved for a vehicle occupant in an accident.

This object is achieved by a motor vehicle having a seat and a seat belt which is at least partially guided by a D-ring spaced from the seat to restrain a seat occupant in the seat in the event of a collision of the motor vehicle, the D Ring in the event of a collision body-mounted and the seat are designed to be movable.

The movement takes place in an advantageous manner in a plane or plane lying in the motor vehicle ( x - y Level) parallel virtual level. Alternatively or cumulatively, it can be provided that the movement in one to the longitudinal plane ( x - z Plane) and / or transverse plane ( y - z Level) parallel plane. Further, it is alternatively or cumulatively possible to cancel the previously disclosed parallelism at least partially and not form the aforementioned planes parallel, ie with an inclination, with respect to the plateau, the longitudinal plane and / or transverse plane.

In an accident, the seat is moved together with the vehicle occupant so that the risk of injury to the brain of a vehicle occupant is reduced due to rotational movements of the skull of the vehicle occupant. Surprisingly, it has been found in the present invention that the BrIC value representing said risk is relatively reduced despite the movement of the seat relative to the prior art.

wobei

ω_{[x, y, z]}

die Kopfwinkelgeschwindigkeit in den jeweiligen Raumrichtungen x, y bzw. z eines kraftfahrzeugeigenen Koordinatensystems gemäß ISO 4130-1978 repräsentiert,

max(|ω_{[x, y, z]}|)

den Betrag der maximalen Kopfwinkelgeschwindigkeiten in den jeweiligen Raumrichtungen x, y bzw. z des kraftfahrzeugeigenen Koordinatensystems gemäß ISO 4130-1978 repräsentiert,

ω_{[x, y, z]C}

einen kritischen Wert der Kopfwinkelgeschwindigkeiten in den jeweiligen Raumrichtungen x, y bzw. z des kraftfahrzeugeigenen Koordinatensystems gemäß ISO 4130-1978 repräsentiert, und wobei ω_xC = 66,25 [rad/s] ω_yC = 56,45 [rad/s] ω_zC = 42,87 [rad/s] gilt.

The BrIC value itself is determined in a manner known per se by the following relationship: $$BrIC=\sqrt{{\left(\frac{\text{Max}\left(\left|{\omega }_{\text{x}}\right|\right)}{{\omega }_{\text{xC}}}\right)}^2+{\left(\frac{\text{Max}\left(\left|{\omega }_{\text{y}}\right|\right)}{{\omega }_{\text{y C}}}\right)}^2+{\left(\frac{\text{Max}\left(\left|{\omega }_z\right|\right)}{{\omega }_{\text{z C}}}\right)}^2}$$

in which

ω _{[x, y, z]}

the head angle velocity in the respective spatial directions x . y respectively. z represents a motor vehicle own coordinate system according to ISO 4130-1978,

max (| ω _{[x, y, z]} |)

the amount of maximum head angular velocities in the respective spatial directions x . y respectively. z of the vehicle's own coordinate system according to ISO 4130-1978,

ω _{[x, y, z] C}

a critical value of the head angular velocities in the respective spatial directions x . y respectively. z of the motor vehicle's own coordinate system according to ISO 4130-1978, and where ω _xC = 66.25 [rad / s] ω _yC = 56.45 [rad / s] ω _zC = 42.87 [rad / s].

The motor vehicle is set up such that the movement of the seat takes place during the accident. Alternatively or cumulatively, the motor vehicle can be set up such that the movement of the seat takes place during a pre-crash phase (ie if an imminent accident event is expected due to sensors and evaluation means present in the motor vehicle) ,

Advantageously, at least one drive means moving the seat is provided in the motor vehicle. This drive means may be at the seat itself or at any other suitable location in the motor vehicle, in particular at its bottom be arranged within the passenger compartment. The drive means can advantageously be operatively connected to an on-board electronic system in the motor vehicle in such a way that a movement of the seat is triggered by signals emitted by the on-board electronics and, in particular, time-controlled and / or position-dependent.

The principle of the motor vehicle is set up to move the seat translational, rotary or combined translational-rotational. However, according to a preferred embodiment, the seat is rotatably mounted about a single pivot axis which is located in the front region of a seat and distal from the D-ring. As a result, a particularly simple construction of the device according to the invention is created in an advantageous manner.

This is all the more true when the pivot axis in the vertical direction of the seat, i. substantially parallel to the vertical axis of the motor vehicle.

According to a preferred embodiment, in the event of a collision, the seat is designed to be pivotable through an angle which is substantially between 5 ° and 60 °. The angle is orthogonal to the vertical direction of the seat and parallel to a virtual center axis of the seat. Thus, he is in a virtual, parallel to the horizontal plane of the motor vehicle level. Starting from the position of the vehicle seat in an accident-free state this pivots in an accident about the pivot axis in the direction of the D-ring. Again, it may alternatively or cumulatively be provided to pivot the seat in an accident or in a pre-crash situation in a direction parallel to the transverse plane of the motor vehicle level, the D-ring is formed body-fixed.

It should be noted that the term "seat" as used in this document is intended to be understood to mean any seat intended for a vehicle occupant within a motor vehicle as intended. For example, a driver's seat and / or a passenger seat arranged next to it and / or seats located behind it in the usual direction of travel of the motor vehicle are included.

• 1 zeigt ein erfindungsgemäßes Kraftfahrzeug in einer unfallfreien Situation.
• 2 stellt das in 1 dargestellte Kraftfahrzeug während einer Unfallsituation dar.

Hereinafter, with reference to the attached non-scale figures, a detailed, non-prejudicial, in particular limiting, description of an embodiment of the present invention. Identical elements are provided with identical reference numerals, unless stated otherwise.

• 1 shows a motor vehicle according to the invention in an accident-free situation.
• 2 put that in 1 shown motor vehicle during an accident situation.

In 1 is a motor vehicle 1 symbolically shown in plan view, which is in an accident-free state. The car 1 has a seat 5 on, which is located on the left side of the vehicle. Thus, the seat is 5 in the case where the motor vehicle 1 is a left-hand drive vehicle, the driver's seat or in the case in the motor vehicle 1 a right-hand drive vehicle is a passenger seat. The seat 10 of the seat 5 is symmetrical to a virtual central axis M formed, which in turn are substantially parallel to the known x -Axis of the motor vehicle 1 is aligned.

On the seat 5 there is a vehicle occupant 15 , by means of a known seat belt 20 in the motor vehicle 1 is secured. The seat belt 20 is in the area of the shoulder of the vehicle occupant 15 through a body-fixed and from the seat 5 spaced D-ring 25 guided. The attachment of the D-ring 25 takes place in a conventional manner, for example, on the B-pillar 30 of the motor vehicle 1 ,

In the in the 1 left upper area of the seat 10 is a substantially in the direction of the vertical axis z of the motor vehicle 1 extending pivot axis 35 provided to the the seat 5 to pivot. In other words, the pivot axis 35 in terms of the xy Plane of the motor vehicle 1 and the seat 5 diagonally away from the D-ring. The pivot axis 35 is at the bottom with one end 40 the vehicle body and with its distal end to the seat 5 attached, wherein at least one of said ends about the pivot axis 35 at least partially rotate.

For the purpose of triggering a rotational movement of the seat 5 is the pivot axis 35 with a drive means 45 , For example, an electric motor, provided. Alternatively or cumulatively, a drive means 50 be provided, that of the pivot axis 35 is spaced and the seat 5 drives at a position offended by this, so that this due to a resulting torque about the pivot axis 35 is moved. This drive means 50 For example, it may have a pyrotechnic actuator which advantageously builds up the desired torque very quickly. It should be noted that any or all of the drive means 35 . 50 is set up, the safety of the vehicle occupant 15 to serve. In addition, it can be provided, one or all drive means 35 . 50 for the purpose of increasing the comfort of the vehicle occupant 15 train. For this purpose, the on-board electronics is set up, each drive means 35 . 50 alone or in combination with a one turn of the seat 5 triggering signal until the vehicle occupant 15 a desired by him comfort position, which is represented by a corresponding comfort position desired signal is reached.

Each of the drive means 45 . 50 is with one in the motor vehicle 1 located and known per se on-board electronics 55 operatively connected. In a pre-crash situation and / or an accident situation, this signal gives a signal (see dashed lines) to at least one of the drive means 45 . 50 so that they can develop their previously described effect.

As already mentioned, the motor vehicle is located 1 according to 1 in an accident-free condition. In 2 however, the motor vehicle is located 1 in an accident situation. In this is the seat 5 around the pivot axis 35 by an angle φ, which can also be referred to as a swivel angle, in the direction of the D-ring 25 turned, taking the seat belt 20 held vehicle occupant 15 is moved and in the 2 shown position occupies. Despite this pivotal movement, the BrIC value acting on the vehicle occupant advantageously has a very acceptable size

LIST OF REFERENCE NUMBERS

1

motor vehicle

5

Seat

10

seat

15

passenger

20

seat belt

25

D-ring

30

B-pillar

35

swivel axis

40

ground

45

drive means

50

drive means

55

board electronics

x, y, z

Coordinates of an on-board coordinate system according to ISO 4130-1978

φ

Swivel angle of the seat

Claims (4)

Motor vehicle (1) having a seat (5) and a seat belt (20) which is guided at least partially through a D-ring (25) spaced from the seat (5), around a vehicle occupant (15) located on the seat (5) ) in the event of a collision of the motor vehicle (1) in the seat (5), characterized in that the D-ring (25) in the event of a collision body-mounted and the seat (5) are designed to be movable. Motor vehicle (1) after Claim 1 , characterized in that the seat (5) about a pivot axis (35) is rotatably mounted, which is located in the front region of a seat surface (10) and distally of the D-ring (25). Motor vehicle (1) according to Claim 2 , characterized in that the pivot axis (35) extends in the vertical direction (z) of the seat (5). Motor vehicle (1) according to Claim 3 characterized in that the seat (5) is pivotable in the event of a collision by an angle (Φ) which is between 5 ° and 60 °, the angle (Φ) orthogonal to the vertical direction (z) of the seat (5 ) and parallel to a virtual central axis (M) of the seat (10) is clamped.

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