Belt feed system for a vehicle and vehicle having a belt feed system

Abstract

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

Description

[0001] Description

[0002] Seatbelt delivery system for a vehicle and vehicle with seatbelt delivery system

[0003] The invention relates to a seatbelt delivery system for a vehicle and a vehicle with a seatbelt delivery system.

[0004] Seatbelt presenting systems are generally known. They typically include a motorized seatbelt presenter that can be moved from a resting position to an active position, with the presenter moving a seatbelt along with it, so that a vehicle occupant can easily grasp the belt. After the seatbelt is fastened, the presenter retracts. Such a seatbelt presenting system is known, for example, from US 2016 / 0207496 A1.

[0005] 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 optimized for installation space.

[0006] Against this background, the object of the invention is to provide an improved solution for how a belt delivery system can be designed.

[0007] This problem is solved by a device according to claim 1 and a vehicle according to claim 4. Further advantageous embodiments are set forth in the dependent claims.

[0008] A seatbelt delivery system for a vehicle is described, comprising a guide rod with a seatbelt presenter at one end and a drive motor with a drive worm gear. The worm gear is operatively connected to the guide rod by means of at least one gear, allowing the seatbelt presenter to 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 with mirror-symmetrical toothing engage(s) with corresponding teeth on the guide rod. This ensures self-centering of the guide rod and minimizes the operating noise of the gears.

[0009] In one embodiment, the drive worm is further designed to engage with the teeth of the double helical gear or one of the two helical gears. This results in a particularly simple and compact design for the belt feeding system.

[0010] A particularly compact design is achieved in a configuration in which the guide rod is arranged on one side of the gear opposite the drive worm.

[0011] The belt delivery system described above offers the following advantages: The guide rod is self-centering. The housing can be reduced in size in the Y-direction and used as a single unit for both the left and right sides. It is expected that the helical gearing will allow the design to withstand greater forces, operate more quietly, and exhibit less wobble due to the self-centering mechanism. Furthermore, a cost advantage is anticipated, as a single drive variant can be integrated into the Y-axis for both the left and right sides, saving space.

[0012] Furthermore, a vehicle, in particular a motor vehicle, is specified with a seat belt delivery system as described above. The vehicle achieves the same advantages and technical effects as described for the seat belt delivery system.

[0013] In one embodiment, the seatbelt delivery system is configured to move the guide rod primarily in the x-direction of the vehicle. By moving from the rest position to the active position, the seatbelt delivery system is moved primarily forward within the vehicle. "Primarily" here means that the guide rod can also be moved at a slight angle to the longitudinal axis of the vehicle, or perform an arc-shaped 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 results in particularly small dimensions for the seatbelt delivery system in the y-direction of the vehicle.

[0014] In one embodiment, the seatbelt delivery system is integrated into a side panel of the vehicle. For example, the guide rod can be located in a rear side panel that is behind a driver's or passenger's seat in the x-direction. The seatbelt presenter can, for example, rest against the side panel and be moved forward past the seat backrest by moving the guide rod.

[0015] The aforementioned arrangement of the seatbelt delivery system is particularly advantageous when the vehicle body does not have a B-pillar for attaching a seatbelt guide point. In one embodiment, the seatbelt delivery system is arranged in a motor vehicle with a B-pillar-free body, for example, a convertible or a coupe.

[0016] Further advantages, features, and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can be essential to the invention individually or in any combination. Where the term "can" is used in this application, it refers to both the technical possibility and the actual technical implementation. Exemplary embodiments are explained below with reference to the accompanying drawings. These show, in schematic representation:

[0017] Figure 1 shows an exemplary belt delivery system in a side view,

[0018] Figure 2 shows a partial sectional view of an exemplary

[0019] belt delivery system,

[0020] Figure 3 shows an exemplary vehicle with a seatbelt delivery system and

[0021] Figure 4 shows a detailed view of the seatbelt delivery system in the vehicle.

[0022] Figure 4.

[0023] Figure 1 shows an exemplary seatbelt delivery system 10 for a motor vehicle in a side view. A seatbelt presenter 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, the torque of which is transmitted by means of at least one gear 30 to a toothed section 16 provided in the guide rod 14. The seatbelt delivery system 10 may also have a housing (not shown).

[0024] Figure 2 shows a partial sectional view of an exemplary belt feeding system 10. Between the guide rod 14 and the drive worm 22, two gears 32 and 34, designed symmetrically to each other and with helical teeth 33 and 35 respectively, are arranged on a common axis 40. Alternatively, instead of the two gears 32 and 34, a double helical gear 30 with two opposing helical teeth 33 and 35 can be used. One helical tooth 33 engages with the teeth of the worm drive. The guide rod 14 is arranged on the side of the gear 30 or gears 32 and 34 opposite the drive worm 22. This guide rod has teeth 16 that correspond to and engage with the helical teeth 33 and 35. When the motor is operated, the rotary motion of the worm 22 is converted into a linear motion of the guide rod 14 and this is moved into or out of the drawing plane.

[0025] 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.

[0026] Figure 3 shows a vehicle 1 in the form of a coupe with an exemplary seat belt delivery system 10. The seat belt delivery system is integrated into a rear side panel of the vehicle 1. Figure 4 shows a detailed view of the seat belt delivery system 10 as arranged in the vehicle 1. When the motor 20 is actuated, the seat belt presenter is moved forward towards the driver's seat, with the guide rod performing a movement essentially in the x-direction of the vehicle 1. To achieve particularly small dimensions in the y-direction of the vehicle, the motor 20 with drive worm 22, gear 30 or gears 32 with 34, and drive rod 14 in the z-direction are arranged one above the other.

[0027] 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 gear. The double helical gear can directly drive a guide rail (rod), which is thereby guided in a self-centering manner. The housing could be correspondingly reduced in size in the Y-direction and used as a single unit for the left and right sides of the vehicle. It is expected that the helical gearing will allow the assembly to withstand more forces, become quieter, and, due to the self-centering, exhibit less wobble. Reference numeral list

[0028] 1 vehicle

[0029] 10 belt delivery system

[0030] 12 belt presenters

[0031] 14 Guide rod

[0032] 16 toothed guide rod

[0033] 20 engine

[0034] 22 Drive screw

[0035] 30 double helical gear

[0036] 32, 34 helical gears

[0037] 33, 35 Helical gearing

[0038] 40 wave

Claims

Patent claims 1. Belt delivery system (10) for a vehicle (1) comprising: a guide rod (14) at one end of which a belt delivery unit (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 delivery unit (12) can be moved from a rest position to an active position, wherein the operative 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).

3. Belt delivery system according to one of the preceding patent claims, in which the guide rod (14) is arranged on one side of the gear (30, 32) opposite the drive worm (22).

4. Vehicle (1 ) with a belt delivery system (10) according to one of the preceding claims.

5. Vehicle according to claim 4, wherein the belt delivery system (10) is configured to move the guide rod (14) substantially 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 according to one of claims 4 to 6, which is a motor vehicle with a B-pillar-free body.

Images