Belt delivery system for a vehicle and vehicle with belt delivery system

Abstract

The invention relates to a belt delivery system (10) for a vehicle (1) comprising: a guide rod (14), at one end of which a belt presenter (12) is arranged, and a drive motor (20) with a drive worm (22), which is operatively connected to the guide rod (14) by means of at least one gearwheel (30, 32), so that by operating the motor (20) the belt presenter (12) can be moved from a rest position to an active position, wherein the operative connection is designed such that a double helical gearwheel (30) or two helical gearwheels (32, 34), the teeth (33, 35) of which are mirror-symmetrical to one another, engage(s) with a toothing (16) of the guide rod (14). Furthermore, a vehicle with a belt presenter system is specified.

Description

[0001] The invention relates to a belt delivery system for a vehicle and a vehicle with a belt delivery system.

[0002] Belt deployment systems are generally well known. They typically include a motorized belt deployment mechanism that can be moved from a rest position to an active position. The belt deployment mechanism moves a seat belt along with the vehicle occupant, allowing the vehicle occupant to easily grasp the belt. After the seat belt is fastened, the belt deployment mechanism retracts. Such a belt deployment system is known, for example, from US 2016 / 0 207 496 A1.

[0003] Further prior art documents are DE 10 2014 015 340 A1 and DE 10 2014 223 045 A1.

[0004] The goal is to create a belt delivery system that is inexpensive to manufacture, allows for precise belt guidance, and operates quietly. Furthermore, it should be space-optimized.

[0005] Against this background, the object of the invention is to provide an improved solution as to how a belt delivery system can be designed.

[0006] This object is achieved by a device according to patent claim 1 and a vehicle according to patent claim 4. Further advantageous embodiments emerge from the subclaims.

[0007] A belt feeder system for a vehicle is specified, comprising a guide rod, at one end of which a belt feeder is arranged, and a drive motor with a drive worm, which is operatively connected to the guide rod by means of at least one gear, so that the belt feeder can be moved from a rest position to an active position by operating the motor. The operative connection is designed such that a double-helical gear or two helical gears, whose teeth are mirror-symmetrical to one another, engage(s) with a corresponding toothing of the guide rod. This allows the guide rod to be guided in a self-centering manner, and the running noise of the gears can be minimized.

[0008] In one embodiment, it is further provided that the drive worm engages with a toothing of the double-helical gear or one of the two helical gears. This results in a particularly simple and compact design of the belt feed system.

[0009] A particularly compact design is achieved in a configuration in which the guide rod is arranged on a side of the gear opposite the drive worm.

[0010] The belt feed system described above has the following advantages: The guide rod is self-centering. The housing can be reduced in the Y direction and used as a common component for both the left and right sides. It is expected that the helical gearing will allow the design to absorb more forces, be quieter, and wobble less due to the self-centering. Furthermore, a cost advantage is expected if only one drive variant for the left and right sides can be integrated into the Y axis in a space-saving manner.

[0011] Furthermore, a vehicle, in particular a motor vehicle, with a belt deployment system as described above is specified. The vehicle achieves the same advantages and technical effects as described for the belt deployment system.

[0012] In one embodiment, the belt presenter system is configured to move the guide rod essentially in the x-direction of the vehicle. By moving it from the rest position to the active position, the belt presenter is essentially moved forward in the vehicle. Essentially, this means that the guide rod can also be moved slightly inclined to the longitudinal axis of the vehicle or performs an arcuate movement, with the main movement occurring in the x-direction. In this embodiment, the motor with drive worm, gears, and guide rod are preferably arranged one above the other in the z-direction of the vehicle. This design requires particularly small dimensions of the belt presenter system in the y-direction of the vehicle.

[0013] In one embodiment, the belt feeder system is integrated into a side panel of the vehicle. For example, the guide rod can be arranged in a rear side panel located behind a driver or passenger seat in the x-direction. The belt feeder can, for example, rest against the side panel and be moved forward past the seat backrest by moving the guide rod.

[0014] The above-described arrangement of the belt presenter system is particularly advantageous when the vehicle body does not have a B-pillar for attaching a belt deflection point. In one embodiment, the belt presenter is arranged in a motor vehicle with a body without B-pillars, for example, a convertible or a coupe.

[0015] The following examples are explained with reference to the accompanying drawings, which show schematically: Fig. 1 an exemplary belt delivery system in a side view, Fig. 2 a partial sectional view of an exemplary belt delivery system, Fig. 3 an exemplary vehicle with belt delivery system and Fig. 4 a detailed view of the belt delivery system in the vehicle Fig. 4.

[0016] Fig. 1 shows an exemplary belt feeder system 10 for a motor vehicle in a side view. A belt feeder 12 is arranged at the end of a guide rod 14, which is movable along its longitudinal axis. The rod is driven by an electric motor 20 with a drive worm 22, whose torque is transmitted by at least one gear 30 to a toothing 16 provided in the guide rod 14. The belt feeder system 10 may further comprise a housing (not shown).

[0017] Fig. 2 shows a partial sectional view of an exemplary belt feed system 10. Between the guide rod 14 and the drive worm 22, two mirror-symmetrical gears 32 and 34 with helical gearing 33 and 35, respectively, are arranged on a common axis 40. Alternatively, instead of the two gears 32, 34, a double-helical gear 30 with two opposing helical gears 33, 35 can be used. One helical gear 33 engages with the gearing of the worm drive. The guide rod 14 is arranged on the side of the gear 30 or gears 32, 34 opposite the drive worm 22. This gear has a gearing 16 that corresponds to and engages with the helical gearing 33, 35. When the motor is operating, the rotary movement of the worm 22 is converted into a linear movement of the guide rod 14 and this is moved into or out of the drawing plane.Accordingly, the belt presenter 10 is moved between a rest position and an active position in which the belt is easily accessible and graspable for a vehicle occupant by being carried along by the belt presenter.

[0018] Fig. 3 shows a vehicle 1 in the form of a coupé with an exemplary belt feed system 10. The belt feed system is integrated into a rear side panel of the vehicle 1. Fig. Figure 4 shows a detailed view of the belt presenter system 10 as it is arranged in the vehicle 1. When the motor 20 is actuated, the belt presenter is moved forward toward the driver's seat, with the guide rod moving essentially in the x-direction of the vehicle 1. To achieve particularly compact dimensions in the y-direction of the vehicle, the motor 20 with the drive worm 22, the gear 30 or gears 32 with 34, and the drive rod 14 are arranged one above the other in the z-direction.

[0019] The basic principle of the invention is that a second, mirror-symmetrical helical gear or a double-helical gear is driven directly by the worm. The double-helical gear can directly drive a guide rail (rod), which is thus guided in a self-centering manner. The housing could be reduced accordingly in the Y direction and used as a common part for both the left and right sides of the vehicle. It is expected that the helical gearing will allow the structure to absorb more forces, be quieter, and "wobble" less due to the self-centering. List of reference symbols 1 vehicle 10 Belt delivery system 12 belt presenters 14 Guide rod 16 Toothing guide rod 20 engine 22 Drive worm 30 double helical gear 32, 34 helical gears 33, 35 helical gearing 40 wave

Claims

[1] Seat belt delivery system (10) for a vehicle (1) with: a guide rod (14) at one end of which a belt presenter (12) is arranged and a drive motor (20) with drive worm (22), which is in operative connection with the guide rod (14) by means of at least one gear (30, 32), so that by operating the motor (20) the belt feeder (12) can be moved from a rest position to an active position, wherein the functional connection is designed such that a double helical gear (30) or two helical gears (32, 34), whose teeth (33, 35) are mirror-symmetric to each other, engage(s) in a toothing (16) of the guide rod (14). [2] Belt delivery system according to claim 1, wherein the drive worm (22) engages in a toothing (33) of the double helical gear (30) or one of the two helical gears (32, 34). [3] Belt delivery system according to one of the preceding claims, wherein the guide rod (14) is arranged on one side of the gear (30, 32, 34) opposite the drive worm (22). [4] Vehicle (1) with a belt delivery system (10) according to one of the preceding claims. [5] Vehicle (1) according to claim 4, wherein the belt delivery system (10) is configured to move the guide rod (14) in the x-direction of the vehicle (1). [6] Vehicle (1) according to claim 4 or 5, wherein the guide rod (14) is integrated into a side panel of the vehicle (1). [7] Vehicle (1) according to any one of claims 4 to 6, which is a motor vehicle with a B-pillar-free body.

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