DE102019106839A1 - Wheel module - Google Patents

Abstract

Wheel module of a motor vehicle with a wheel (22) for locomotion of the motor vehicle, a steering stand (14) rotatably mountable on a support frame of the motor vehicle for transmitting a steering movement to the wheel (22), a fork leg (20) connected to the handlebar (14) wherein the fork leg (20) has a fastening flange (18) for coaxial, rotationally fixed fastening of the handlebar (14), and wherein the fork leg (20) has an articulation point (24) for the articulated connection of a rocker arm (26) connected to the wheel (22) and wherein a connecting piece (32) is provided between the fastening flange (18) and the articulation point (24), wherein the fork leg (20) is formed from a multi-component component and wherein the fastening flange (18), the articulation point (24) and the Connecting piece (32) each form a component.

Description

Field of invention

The invention relates to a wheel module for a motor vehicle.

Background of the invention

The invention relates to a wheel module for a motor vehicle, with the aid of which the motor vehicle can be steered and / or driven and / or braked and / or damped with the aid of a spring / damper unit.

From the CN 206679065 U a motor vehicle with a wheel module is known in which a wheel of the wheel module can be rotated by 90 ° about a vertical steering axis in order to be able to park the motor vehicle in tight parking spaces.

Summary of the invention

The invention is based on the object of providing a wheel module which allows a small installation space and a low weight and at the same time a large steering angle for a motor vehicle.

According to the invention, this object is achieved by a wheel module of a motor vehicle with a wheel for locomotion of the motor vehicle, a steering stand rotatably mountable on a support frame of the motor vehicle for transmitting a steering movement to the wheel, a fork leg connected to the handlebar, the fork leg having a mounting flange for coaxial, non-rotatable Has fastening of the handlebar, and wherein the fork leg has an articulation point for the articulated connection of a swing arm connected to the wheel and wherein a connecting piece is provided between the fastening flange and the articulation point, the fork leg being formed from a multi-component component and wherein the fastening flange, the Articulation point and the connecting piece each form a component.

The fork leg is provided for rotating a wheel of a motor vehicle, with a fastening flange for coaxial, non-rotatable fastening of a handlebar rotatable about a steering axis, a pivot point for the articulated connection of a rocker arm connected to the wheel.

The invention is based on the knowledge that the fork legs known from the prior art are relatively heavy. However, inadequately used materials lead to unreliability when mounting roller bearings or even when connecting to the vehicle.

According to the invention, the fork leg is formed from a multi-component component and the fastening flange, the articulation point and the connecting piece are each formed as one component. This means that the parts mentioned are designed as separate components. This has the advantage that the materials for the components can be selected according to their demands in order to guarantee the total weight of the fork leg.

According to one embodiment of the invention, the connecting piece is made from a plastic material. A CFRP material is preferably twisted. The connecting piece is only used to bridge between the mounting flange and the articulation point and is delivered with a lower load than the other two components. It is therefore of advantage that a significantly more weight-saving material is used for the connecting piece.

According to an alternative embodiment of the invention, the fastening flange and / or the articulation point are made of steel and / or aluminum. For these two components, due to the inclusion of roller bearings and the vehicle connection, it is advantageous that they are made of a resilient material. Steel or aluminum is preferably used here. However, it is also conceivable to use a different material which has the same properties and can withstand the stresses.

According to one embodiment of the invention, the connecting piece has an attachment area and the fastening flange is positively connected to the attachment area. According to a further embodiment of the invention, the connecting piece has a transmission area and the transmission area is positively connected to the articulation point. A positive interference fit is preferably provided for the secure connection of the individual components. It is also possible to combine the components in a materially bonded manner or by means of other types of connection. The components can also be connected to one another by means of a force-fit connection or a screw connection. The steel components can also be "overmolded" as inserts.

According to one embodiment of the invention, a respective connection point between the fastening flange and the attachment area and the transmission area and the articulation point is sealed. The seal serves among other things to protect the connection point from environmental influences such as dirt or corrosion.

The seal is preferably designed as an adhesive. On the one hand, the adhesive takes on a sealing function and, on the other hand, it serves to better connect the press fit of the components. For this purpose, the connection points are wetted with the adhesive before joining. A 2-component epoxy resin adhesive is preferably used. However, other adhesives are also possible. The adhesive cures at room temperature, although the drying time can be reduced by applying heat.

The wheel can preferably be rotated through a total steering angle δ of 120 ° δ 360 °, in particular 135 ° δ 200 °, preferably 150 ° δ 180 ° and particularly preferably 165 ° δ 175 °. The angular course of the fork leg enables a particularly large steering angle to be achieved, which even enables the motor vehicle to travel essentially transversely to the longitudinal extent of the motor vehicle. This makes it easier to park the motor vehicle in tight parking spaces and enables a particularly small turning circle.

Particularly preferably, the wheel can be rotated in at least one extreme position that is maximally deflected to a starting position intended for straight-ahead travel by a steering angle Δδ of 85 ° Δδ 100 ° and in particular 90 ° Δδ 95 °. The angular shape of the fork leg enables a particularly large steering angle to be achieved which, at least in the extreme position in which the recording angle encompasses the wheel mirror, even enables the vehicle to travel essentially transversely to the longitudinal extent of the vehicle. This makes it easier to park the motor vehicle in tight parking spaces and enables a particularly small turning circle. Even with a steering angle Δδ exceeding 90 °, a slight reverse travel and / or a slight forward travel despite the engaged forward gear is possible, which further simplifies parking in tight parking spaces without having to switch between forward and reverse gear.

Figure list

• 1 eine schematische perspektivische Ansicht eines Radmoduls,
• 2 einen schematische perspektivische Ansicht des Gabelbeins des erfindungsgemäßen Radmoduls, und
• 3 eine schematische Explosionsdarstellung des Gabelbeins des erfindungsgemäßen Radmoduls.

An exemplary embodiment of the invention is illustrated below with the aid of three figures. Show it:

• 1 a schematic perspective view of a wheel module,
• 2 a schematic perspective view of the fork leg of the wheel module according to the invention, and
• 3 a schematic exploded view of the fork leg of the wheel module according to the invention.

Detailed description of the drawings

This in 1 wheel module shown 10 for a motor vehicle configured as a multi-lane passenger car, one of a steering actuator 12th rotating handlebar 14th on. The handlebar 14th can be directly or indirectly rotatably mounted on a support frame of the motor vehicle via a steering head bearing, in particular the steering rod 14th in the axial direction of the handlebar 14th is immovably mounted for example by an axial bearing. With the handlebar 14th is via a mounting flange 18th a fork leg 20th non-rotatably attached, which is at the horizontal level of an axis of rotation of a wheel to be steered 22nd of the wheel module 10 a hub 24 trains. At the focal point 24 is a swing arm 26th tied pivotably mounted, the rocker arm 26th at its other end articulated and coaxial with the wheel 22nd connected is. On the bike 22nd and / or on the swing arm 26th is a shock absorber 28 attached, at its other end to the handlebar 14th and / or with the fork leg 20th is attached. Between the shock absorber 28 and the handlebar 14th a level control device can be provided. The wheel 22nd can in particular be driven and / or braked by a wheel hub drive.

The following is the structure of the fork leg 20th based on 2 and 3 described in more detail.

The wishbone 20th has one of the mounting flange 18th essentially horizontally protruding area 30th on from which a connector 32 to the point of attachment 24 runs. The wishbone 20th is formed from a multi-component component. The mounting flange 18th , the hub 24 and the connector 32 each form a separate component. The connector 32 is formed from a plastic material. A CFRP material is preferably used. The mounting flange 18th and the hub 24 are made of steel and / or aluminum.

The connector 32 and the mounting flange 18th as well as the connector 32 and the hub 24 are positively connected to each other. For a secure connection of the individual components, a form-fitting interference fit provided. For connection to the with mounting flange 18th has the connector 32 a starting area 34 and a transmission area for connection to the coupling point 36 on. The mounting flange 18th and the hub 24 are at their connection areas according to the shape of the areas 34 , 36 of the connector 32 customized.

The connector 32 has a predominantly vertical direction from the attachment area 30th downward bridging area 38 on, one of which in the vertical direction and in the radial direction of the wheel 22nd running transition area 36 stands out.

List of reference symbols

10

Wheel module

12

Steering actuator

14th

Handlebar

18th

Mounting flange

20th

Wishbone

22nd

wheel

24

Hub

26th

Swing arm

28

Shock absorbers

30th

Area

32

Connector

34

Approach area

36

Transmission range

38

Bridging area

40

Transition area

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• CN 206679065 U [0003]

Claims (9)

Wheel module of a motor vehicle with a wheel (22) for locomotion of the motor vehicle, a steering stand (14) rotatably mountable on a support frame of the motor vehicle for transmitting a steering movement to the wheel (22), a fork leg (20) connected to the handlebar (14), wherein the fork leg (20) has a fastening flange (18) for coaxial, rotationally fixed fastening of the handlebar (14), and wherein the fork leg (20) has an articulation point (24) for the articulated connection of a rocker arm (26) connected to the wheel (22) and wherein a connecting piece (32) is provided between the fastening flange (18) and the articulation point (24), characterized in that the fork leg (20) is formed from a multi-component component and wherein the fastening flange (18), the articulation point (24 ) and the connecting piece (32) each form a component. Wheel module after Claim 1 wherein the connector (32) is formed from a plastic material. Wheel module according to one of the preceding claims, wherein the fastening flange (18) and / or the articulation point (24) is made of steel and / or aluminum. Wheel module according to one of the preceding claims, wherein the connecting piece (32) has an attachment region (34) and wherein the fastening flange (18) is positively connected to the attachment region (34). Wheel module according to one of the preceding claims, wherein the connecting piece (32) has a transmission area (36) and wherein the transmission area (36) is positively connected to the articulation point (24). Wheel module according to one of the preceding claims, wherein a respective connection point between the fastening flange (18) and the attachment region (34) and the transmission region (36) and the articulation point (24) is sealed. Wheel module according to one of the preceding claims, wherein the seal is designed as an adhesive. Wheel module according to one of the preceding claims, wherein the wheel (22) can be rotated through a total steering angle α of 120 ° ≤ α ≤ 360 °. Wheel module according to one of the preceding claims, the wheel (22) being rotatable by a steering angle Δα of 85 ° Δα 100 ° in at least one extreme position that is deflected to the maximum extent for straight travel.

Images