DE102018006323A1 - Seat belt system for a vehicle seat - Google Patents

Abstract

The invention relates to a safety belt system (S) for a vehicle seat (2) in a vehicle (1) with an end fitting, a Gurtumlenkpunkt (4), a belt retractor (6) and a buckle (7), in which a on a webbing (5 ) slidably arranged Gurtschlosszunge (8) can be inserted. According to the invention, the vehicle seat (2) is a sprung oscillating seat and the belt deflection point (4) is arranged on a B pillar (3) of the vehicle (1) and displaceably mounted in the direction of a vehicle vertical axis (z) as a function of movement of the vehicle seat (2) wherein the displacement takes place automatically in synchronism with the movement of the vehicle seat (2).

Description

The invention relates to a safety belt system for a vehicle seat in a vehicle with an end fitting, a Gurtumlenkpunkt, a belt retractor and a buckle, in which a slidably arranged on a belt buckle tongue can be inserted.

From the DE 10 2016 004 614 A1 is a support for a belt restraint system for a vehicle, in particular a motorhome or a van, with at least one vertical support known. The support has a horizontally forwardly tapered, substantially annular and provided with a vertical opening slot, open Ω-shaped cross-section with a circumferential around a central space wall. In addition, laterally extending flange surfaces are arranged laterally of the opening slot, wherein the support may be formed as an aluminum extruded profile.

The invention has for its object to provide a comparison with the prior art improved safety belt system for a vehicle seat in a vehicle.

The object is achieved by the features specified in claim 1.

Advantageous embodiments of the invention are the subject of the dependent claims.

A seat belt system for a vehicle seat in a vehicle has an end fitting, a belt deflection point, a belt retractor and a belt buckle into which a belt buckle tongue displaceably arranged on a belt strap can be inserted. According to the invention, the vehicle seat is a sprung oscillating seat and the Gurtumlenkpunkt is disposed on a B-pillar of the vehicle and slidably mounted in response to movement of the vehicle seat in the direction of a vehicle vertical axis, wherein the displacement is automatically synchronous to the movement of the vehicle seat.

Characterized in that the Gurtumlenkpunkt is slidably mounted and shifts according to a movement of the vehicle seat in the direction of the vehicle's vertical axis, a wearing comfort of the webbing is increased, since friction of the webbing can be largely excluded in a movement of the vehicle seat.

In addition, the vehicle seat can be constructed in a lightweight construction, since an introduction of force takes place at a tensile force acting on the Gurtumlenkpunkt tensile force in the B-pillar and thus in a vehicle body shell.

Since the Gurtumlenkpunkt is thus arranged on the B-pillar, lower forces are introduced into a shell floor of the vehicle, so that the shell floor can be constructed comparatively simple and cheaper.

Embodiments of the invention are explained in more detail below with reference to drawings.

• 1 schematisch eine perspektivische Ansicht eines Fahrzeugsitzes und ein diesem zugeordnetes Sicherheitsgurtsystem und
• 2 schematisch eine teilweise Schnittdarstellung des Fahrzeugsitzes und einer B-Säule mit dem Sicherheitsgurtsystem.

Showing:

• 1 schematically a perspective view of a vehicle seat and associated therewith a safety belt system and
• 2 schematically a partial sectional view of the vehicle seat and a B-pillar with the safety belt system.

Corresponding parts are provided in all figures with the same reference numerals.

1 schematically shows a section of a driver's cab of a vehicle 1 , In particular, a truck with a vehicle seat designed as a spring-loaded suspension seat 2 and a safety belt system associated therewith S ,

The safety belt system S has a End fitting not shown in detail, one on a B-pillar 3 arranged Gurtumlenkpunkt 4 for guiding a webbing 5 , one in a lower area of the B-pillar 3 arranged, in 2 described belt retractor 6 and a buckle 7 on, in which one on the webbing 5 slidably arranged Gurtschlosszunge 8th is pluggable.

By means of the suspension seat designed as a vehicle seat 2 becomes a not shown driver of the vehicle 1 of vibrations and impacts acting on the cab decoupled.

For a comparatively high wearing comfort of the webbing 5 in the applied state is this, ie the Gurtumlenkpunkt 4 and the belt retractor 6 usually in a backrest 9 of the vehicle seat 2 integrated. As a result, it is necessary that a seat structure is relatively stiff, so that these forces in an accident on the webbing 5 act, absorb and into a shell floor of the vehicle 1 can initiate. Therefore, it is again necessary that a steel structure of the vehicle seat 2 is designed accordingly, whereby this has a relatively high weight and is relatively expensive to produce.

Is the webbing 5 , in particular the Gurtumlenkpunkt 4 and the belt retractor 6 , in the area of the B-pillar 3 arranged, in the event of a collision of the vehicle 1 on the webbing 5 acting forces in the B-pillar 3 and not in the shell floor of the vehicle 1 can be introduced, is the webbing 5 conventionally with one on the B-pillar 3 rigidly arranged Gurtumlenkpunkt 4 connected. This reduces the wearing comfort as the webbing 5 on the body, in particular on the neck of the driver on the vehicle seat 2 rubs when the vehicle seat 2 in the direction of the vehicle vertical axis z swings. In particular, the belt retractor blocks 6 the webbing 5 at comparatively fast and strong suggestions of the vehicle seat 2 so that the driver by means of the blocked in relation to a belt webbing strap 5 in the vehicle seat 2 is clamped.

Among other things, the wearing comfort of the webbing 5 in the applied state when using a spring-loaded suspension seat as a vehicle seat 2 To significantly improve, it is provided that the Gurtumlenkpunkt 4 in the direction of the vehicle vertical axis z is slidably mounted.

1 shows by means of an arrow P1 the movement of the vehicle seat 2 and by means of another arrow P2 the corresponding displacement of Gurtumlenkpunktes 4 in the direction of the vehicle vertical axis z , the belt deflection point 4 So is according to the movement of the vehicle seat 2 in the direction of the vehicle vertical axis z arranged concurrently.

In a substructure 10 of the vehicle seat 2 is in accordance with the present embodiment in 2 a sensor 11 integrated, the movement of the vehicle seat 2 in the direction of the vehicle vertical axis z captured and an actuator 12 for shifting the Gurtumlenkpunktes 4 in the direction of the vehicle vertical axis z supplies. For this purpose, the sensor 11 and the actuator 12 coupled together.

The actuator 12 For example, includes a threaded shaft and / or a pneumatic device, by means of which or by means of which the Gurtumlenkpunkt 4 according to the movement of the vehicle seat 2 in the direction of the vehicle vertical axis z is displaceable. The pneumatic device is advantageous when compressed air already in the vehicle 1 is available.

By means of the actuator 12 So is a height of Gurtumlenkpunktes 4 at the B-pillar 3 depending on vertical movements of the vehicle seat 2 customizable.

The belt deflection point 4 moves analogously to the movement of the vehicle seat 2 and thus the driver in the direction of the vehicle vertical axis z , whereby a displacement of a distance of the vehicle seat 2 that is, the driver's relative to the Gurtumlenkpunkt 4 is largely excluded and thus the risk of friction of the webbing 5 on the body of the driver, especially at the neck, is substantially reduced.

A height of the Gurtumlenkpunktes 4 , So a belt height, can in one embodiment by means of the actuator 12 be preset, this position being a so-called zero position for adjustment with the vehicle seat 2 represents. Thus, the actuator 12 for electric belt height adjustment with a memory function in the vehicle 1 and also be used in a passenger car.

LIST OF REFERENCE NUMBERS

1

vehicle

2

vehicle seat

3

B-pillar

4

belt deflection

5

webbing

6

retractor

7

buckle

8th

buckle tongue

9

backrest

10

substructure

11

sensor

12

actuator

P1

arrow

P2

another arrow

S

seat belt system

z

Vehicle axis

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102016004614 A1 [0002]

Claims (3)

Seat belt system (S) for a vehicle seat (2) in a vehicle (1) with an end fitting, a Gurtumlenkpunkt (4), a belt retractor (6) and a buckle (7), in which a on a webbing (5) slidably arranged Gurtschlosszunge (8) can be inserted, characterized in that the vehicle seat (2) is a spring-loaded suspension seat and the Gurtumlenkpunkt (4) on a B-pillar (3) of the vehicle (1) and in response to movement of the vehicle seat (2) in Direction of a vehicle vertical axis (z) is slidably mounted, wherein the displacement takes place automatically in synchronization with the movement of the vehicle seat (2). Seat belt system (S) according to Claim 1 , characterized in that for detecting the movement of the vehicle seat (2) in the direction of the vehicle vertical axis (z) at least one sensor (11) with the vehicle seat (2) is coupled or coupled. Seat belt system (S) according to Claim 1 or 2 , characterized in that the Gurtumlenkpunkt (4) for displaceable mounting with a threaded shaft and / or a pneumatic device as an actuator (12) is coupled or coupled.

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