DE102017103610A1 - Wheel carrier for detecting forces - Google Patents

Abstract

The invention relates to wheel carriers (1) for detecting forces with at least one wheel carrier element (2, 3, 4, 5) for receiving a brake element and / or for connecting a chassis element to the wheel carrier (1), a wheel bearing mount (6) for receiving a Wheel bearing (7), and with at least one sensor element (8, 9, 10, 11, 12), wherein the at least one sensor element (8, 9, 10, 11, 12) between the at least one Radträgerelement (2, 3, 4 , 5) and the wheel bearing receptacle (6) is arranged such that the force which is transmitted between the Radträgerelement (2, 3, 4, 5) and the wheel bearing receptacle (6) can be detected in the form of a change in length. Furthermore, the invention relates to a wheel carrier assembly (20) with a wheel carrier (1) and with a wheel bearing (7).

Description

The invention relates to a wheel carrier for detecting forces with at least one wheel carrier element for receiving a brake element and / or for connecting a suspension element with the wheel carrier, with a wheel bearing receptacle for receiving a wheel bearing and with at least one sensor element.

Only wheel bearings with sensor elements are known from the prior art, but no wheel carriers.

So is out of the DE 10228412B4 a wheel bearing known, can be detected with the wheel forces of a motor vehicle (uprising force, lateral forces and longitudinal forces). In one embodiment of the wheel bearing braking forces can also be determined. All forces are measured using strain gauges on the wheel bearing.

On a wheel carrier, however, occur further driving dynamics forces, such as steering or spring forces. These forces can be used for safety systems such as ABS, ESP or z. B. adaptive suspensions are used to provide the best possible effect on the current driving situation.

It is therefore an object of the present invention to provide a wheel carrier and a Radträgeranordnung, with whose or their help as many driving dynamics relevant forces, such as braking forces and / or steering forces on the vehicle of a motor vehicle and / or spring / damper forces are determinable or detectable ,

This object is achieved by the features of the independent claims. Further advantageous developments are the subject of the dependent claims.

According to the invention, in a first aspect of the present invention, a wheel carrier for detecting forces preferably comprises at least one wheel carrier element for receiving a brake element and / or for connecting a chassis element to the wheel carrier.

Conveniently, the wheel carrier further comprises a wheel bearing receptacle for receiving a wheel bearing and preferably at least one sensor element for detecting forces.

Advantageously, the at least one sensor element is arranged between the at least one wheel carrier element and the wheel bearing receptacle such that preferably the force which is transmitted between the at least one wheel carrier element and the wheel bearing receptacle can be detected in the form of a change in length. Thus forces can be detected in a simple way dynamic but also static nature by a change in length and used for evaluation.

It is also advantageous if the at least one sensor element is mounted or integrated on or in a wheel bearing, which is preferably arranged within the wheel bearing receptacle, so that preferably the force which is transmitted between the at least one wheel carrier element and the wheel bearing in shape a change in length is detected.

Preferably, the at least one sensor element is arranged on the wheel carrier or a wheel bearing such that the at least one sensor element measures the detected change in length in the material of the wheel carrier element in the force flow between the at least one wheel carrier element and the wheel bearing receiver or the wheel bearing. Thus, it is very possible to detect with what intensity the forces are absorbed and forwarded within the Radträgerelements.

Furthermore, it is advantageous if the at least one wheel carrier element is designed as a receptacle for a steering element for steering the wheel carrier. Thus, a steering element, such as. B. a handlebar, connectable to the wheel carrier. The connection for a steering element can also be integrated on the wheel bearing.

Preferably, the at least one sensor element is arranged on the receptacle in order to detect steering forces. Thus, steering forces are detectable.

Preferably, the receptacle is cup-shaped or hollow cylindrical in order to receive in the interior of the steering element, in particular non-positively and / or positively.

Furthermore, it is preferred if the at least one wheel carrier element is designed as a receptacle for a brake element, in particular for a brake caliper. Preferably, the connection for the brake element is integrated in the wheel bearing.

Conveniently, the at least one sensor element is arranged on the receptacle in order to detect braking forces. Consequently, braking forces can be detected with this embodiment.

Preferably, the receptacle is formed in two parts. This allows braking forces z. B. a caliper mechanically safe and introduced into the wheel.

It is also possible that the at least one wheel carrier element is designed as a receptacle for a damper and / or strut.

Preferably, the at least one sensor element is arranged on the receptacle in order to detect spring and / or damping forces. As a result, so are spring and damper forces that occur during operation of a vehicle by z. B. caused the road surface, detectable.

Conveniently, the receptacle is cup-shaped or hollow cylindrical designed to receive in the interior of the damper and / or shock absorber, in particular non-positively and / or positively.

Furthermore, it is advantageous if the at least one wheel carrier element is designed as a chassis element for arranging a chassis control arm.

Advantageously, the at least one sensor element is arranged on the chassis element in order to detect lateral and / or longitudinal and / or wheel contact forces.

Preferably, the chassis element is connected to a suspension link, in particular movable.

Furthermore, it is advantageous if the at least one sensor element is designed as a strain gauge and / or as a magnetostrictive sensor. Thus, acting forces can be detected in a simple manner.

Conveniently, the at least one sensor element is arranged on at least one wheel carrier element, preferably recessed on its surface or in the surface. As a consequence, forces acting on the wheel carrier element can be detected quickly and easily.

Furthermore, it is possible that the at least one sensor element is integrated in or on a wheel bearing.

Furthermore, it can be provided that the wheel carrier further comprises evaluation electronics for further processing of data of the at least one sensor element. The evaluation electronics can, for example, convert the detected values of the at least one sensor element into forces or process the detected signals of the at least one sensor element for forwarding and further processing. This evaluation electronics may for example also include a filter to z. B. eliminate measurement noise.

It is also advantageous if the evaluation electronics is connected to the at least one sensor element, preferably at least indirectly connected.

Furthermore, the at least one sensor element can be connected to a vehicle BUS.

The evaluation electronics preferably fall back on vehicle-dependent and situation-dependent measured variables from a vehicle, which are preferably stored in a data memory. Thus, it is z. B. possible to plausibilize the detected signals or data of the at least one sensor element and / or to compare them with comparison data in order to infer the current vehicle situation.

Furthermore, it is preferred that the detected data or signals and / or forces of the at least one sensor element can be forwarded to a driver assistance system and / or another safety-relevant system within a vehicle. Thus, the data / signals of the at least one sensor element can be further processed to z. B. an adaptive suspension on the current background properties, which is exposed to a wheel to best possible.

It is also advantageous if the acquired data and / or forces for improved control of an actuator in the chassis and / or for tuning an adaptive suspension can be used.

A second aspect of the present invention includes a wheel carrier assembly having a wheel carrier and a wheel bearing.

It is expressly understood that the features of the wheel carrier, as mentioned in the first aspect, can be used individually or combined with each other in the Radträgeranordnung application.

In other words, the features relating to a wheel carrier mentioned above under the first aspect of the invention can also be combined here with further features in the second aspect of the invention.

Advantageously, a wheel carrier assembly comprises a wheel carrier as mentioned in the first aspect of the invention, and further a wheel bearing.

Preferably, the wheel bearing consists of rotating part or of an inner or outer ring and a stationary flange or an outer or inner ring and arranged therebetween rolling elements.

Conveniently, at least one sensor element is arranged on the stationary flange or on the rotating part or on the rotating inner or outer ring, with the aid of which acting forces can be detected.

Furthermore, the at least one sensor element can be arranged between stationary flange and wheel carrier.

Furthermore, it is advantageous if the at least one sensor element is designed as a sensor ring within the wheel bearing. Thus, z. B. forces are detected in a simple manner.

Preferably, the standing flange is connected to at least one wheel carrier element via the wheel bearing receptacle.

It can also be provided that the at least one sensor element measures an acting force in the form of a change in length in the material of the stationary flange in the force flow between the at least one wheel carrier element and the rotating part which serves to connect to a wheel rim. Consequently, the forces acting between the stationary flange and Radträgerelement be detected, whereby z. B. can be deduced on the current vehicle situation of an evaluation.

Hereinafter, the inventive idea presented above is expressed in other words.

This idea preferably comprises - in simplified form - a wheel carrier, in particular for motor vehicles, wherein the wheel carrier is equipped with sensors that enable detection of static and dynamic forces.

In other words, the inventive idea ideally has a radnahe measuring arrangement, which consists of at least one sensor element.

Preferably, at least one sensor element on the wheel carrier, which is conveniently attached to a vehicle axle, arranged. At the wheel carrier various forces are introduced from the vehicle into the chassis and thus the wheel and can be detected there by the at least one sensor element.

• 1 eine dreidimensionale Ansicht eines erfindungsgemäßen Radträgers.

The invention will be explained in more detail by means of exemplary embodiments in conjunction with an associated drawing. This shows schematically:

• 1 a three-dimensional view of a wheel carrier according to the invention.

1 shows a three-dimensional view of a wheel carrier according to the invention 1 for detecting forces.

Shown in more detail 1 a Radträgeranordnung 20 with a wheel carrier 1 and with a wheel bearing 7 ,

This includes the wheel bearing 7 a rotating part 21 and a stationary flange 22 and rolling elements (not shown) disposed therebetween.

At the standing flange 22 is a sensor element 23 arranged. The standing flange 22 is with wheel carrier elements 2 . 3 . 4 . 5 via a wheel bearing mount 6 connected. Regarding the wheel carrier elements 2 . 3 , 4, 5 will be explained in more detail below.

The sensor element 23 is able to exert an applied force in the form of a change in length in the material of the standing flange 22 in the power flow between at least one Radträgerelement 2 . 3 . 4 . 5 and the rotating part 21 , which serves to connect with a wheel rim to measure.

The acting forces may be longitudinal and / or vertical and / or shear forces and / or torques applied to a vehicle wheel (not shown) disposed on the rotating member 21 of the wheel bearing 7 act.

The wheel carrier 1 comprises, as already mentioned, at least one wheel carrier element 2 . 3 , 4, 5 for receiving a brake element and / or for connecting a suspension element with the wheel carrier 1 ,

Furthermore, the wheel carrier has 1 a wheel bearing mount 6 for receiving the wheel bearing 7 and at least one sensor element 8th . 9 . 10 . 11 . 12 ,

In summary, this is at least one sensor element 8th . 9 . 10 . 11 , 12 such between the at least one Radträgerelement 2 . 3 . 4 . 5 and the wheel bearing mount 6 arranged that the force between the at least one wheel carrier element 2 . 3 . 4 . 5 and the wheel bearing mount 6 is transmitted in the form of a change in length is detected.

In more detail, this is at least one sensor element 8th . 9 . 10 . 11 . 12 so on the wheel 1 arranged that the at least one sensor element 8th . 9 . 10 . 11 , 12 the detected change in length in the material of the Radträgerelements 2 . 3 . 4 . 5 in the power flow between the at least one wheel carrier element 2 . 3 . 4 . 5 and the wheel bearing mount 6 measures.

• - als Aufnahme 2 für ein Dämpfer- und/oder Federbein,
• - als Aufnahme 3 für ein Lenkelement,
• - als Fahrwerkselement 4 zum Anordnen eines Fahrwerkslenkers, und
• - als Aufnahme 5 für ein Bremselement.

This is according to the embodiment 1 the at least one wheel carrier element 2 . 3 . 4 . 5 realized:

• - as a recording 2 for a damper and / or strut,
• - as a recording 3 for a steering element,
• - as a chassis element 4 for placing a suspension arm, and
• - as a recording 5 for a brake element.

At the reception 2 for a damper and / or strut (not shown) is a sensor element 11 arranged to detect spring and / or damper forces.

This is the recording 2 hollow cylindrical designed to receive the damper and / or strut force-fit inside.

At the reception 3 for a steering element (not shown) for steering the wheel carrier 1 is a sensor element 8th arranged to detect steering forces.

So the recording 3 the steering forces also on the wheel carrier 1 can forward, this is designed as a hollow cylinder to receive the steering element frictionally inside.

Also on the suspension element 4 for arranging a suspension link (not shown) is a sensor element 12 arranged to detect lateral and / or longitudinal and / or wheel contact forces.

Here is the chassis element 4 with a suspension link, in particular movable, connected.

Further, at the recording 5 for a brake element, in particular for a brake caliper, two sensor elements 9 . 10 arranged to detect braking forces acting on a wheel (not shown).

As 1 shows, is the recording 5 designed in two parts to mechanically absorb occurring braking forces of a caliper and into the wheel 1 initiate.

All the aforementioned sensor elements 8th . 9 . 10 . 11 . 12 are designed as strain gauges. An embodiment of the sensor elements 8th . 9 . 10 . 11 . 12 as magnetostrictive sensors is also conceivable and the use of different sensor elements on the wheel 1 ,

Furthermore, the sensor elements 8th . 9 . 10 . 11 . 12 on the surface of the individual wheel carrier elements 2 . 3 . 4 . 5 arranged. However, it is also possible that the sensor elements 8th . 9 . 10 . 11 . 12 are sunk in the surface of a Radträgerelements.

Of course, it is also conceivable that the one sensor elements on the surface and others are arranged sunk in turn in the surface.

Further shows 1 that the wheel carrier 1 or the wheel carrier assembly 20 an evaluation 13 for further processing of data of the sensor elements 8th . 9 , 10, 11, 12. Although only a connection of the evaluation electronics 13 with the wheel carrier 1 generally illustrated, however, it is advantageous if each individual sensor element 8th . 9 . 10 . 11 . 12 separately with the evaluation electronics 13 connected is. Furthermore, the sensor elements can be connected to a vehicle BUS.

In this case, the transmitter 13 rely on vehicle and situation-dependent measured variables from a vehicle, which can be stored in a data memory (not shown separately).

Also, the acquired data and / or forces of the individual sensor elements 8th . 9 , 10, 11, 12 are forwarded to a driver assistance system and / or another safety-related system within a vehicle.

The acquired data and / or forces can be used, for example, for improved regulation of an actuator in the chassis and / or for tuning an adaptive chassis.

Below is a wheel carrier 1 or a Radträgeranordnung 20 to 1 again, but in other words, explained.

So is in 1 a wheel carrier 1 , in particular for motor vehicles, shown, wherein the wheel carrier 1 with sensors 8th . 9 . 10 . 11 . 12 or sensor elements 8th . 9 . 10 . 11 . 12 equipped to enable the detection of static and dynamic forces.

It shows 1 a spatial representation of the wheel carrier 1 , The wheel carrier 1 has a recording 2 for a damper and / or strut, the inclusion 3 or a connection for a steering element, a suspension element 4 or a connection for arranging a suspension arm, a recording 5 for a brake element or for a brake caliper and a bore or a wheel bearing receptacle 6 for receiving a wheel bearing 7 ,

• - In einer ersten Variante verfügt der Radträger 1 über das Radlager 7, welches die Radaufstandskräfte, Seitenkräfte und Längskräfte erfassen kann. Darüber hinaus ist im Bereich der Aufnahme 3 für ein Lenkelement ein Sensorelement 8 zur Erfassung der Lenkkräfte integriert. Weiterhin befinden sich an der Aufnahme 5 für einen Bremssattel zwei Sensorelemente 9, 10 zur Erfassung der Bremskräfte. Zusätzlich werden Feder- und Dämpferkräfte über das Sensorelement 11 erfasst.
• - In einer zweiten, alternativen Variante können durch das Radlager 7 die Bremskräfte erfasst werden. Hierdurch können vorzugsweise die Sensorelemente 9, 10 am Radträger 1 entfallen, alle weiteren vorgenannten Sensorelemente aus der ersten Variante werden wie zuvor beschrieben angeordnet.
• - In einer dritten Variante können die Seiten-und Längskräfte, sowie die Radaufstandskraft über ein zusätzliches Sensorelement 23 erfasst werden. Zur Erfassung der üblichen Kräfte werden die Sensorelemente, wie in der ersten Variante beschrieben, angeordnet.
• - Bei einer vierten Variante ist es möglich, durch eine alternative Ausgestaltungsform des Radträgers 1 die relevanten Kräfte über weniger Sensorelemente zu erfassen. Hierzu wird wenigstens ein Sensorelement im Bereich aller Kraftpfade benötigt.
• - Selbstverständlich sind weitere Anordnungen von Sensorelementen 8, 9, 10, 11, 12 denkbar, insbesondere Kombinationen der vorgenannten Varianten.

Using sensor elements 8th . 9 . 10 . 11 . 12 The introduced forces can be measured. For the detection of forces several variants are conceivable:

• - In a first variant, the wheel carrier has 1 over the wheel bearing 7 which can detect the wheel contact forces, lateral forces and longitudinal forces. In addition, in the field of recording 3 for a steering element, a sensor element 8th integrated to capture the steering forces. Continue to be at the recording 5 for a caliper, two sensor elements 9 . 10 for detecting the braking forces. In addition, spring and damper forces are transmitted via the sensor element 11 detected.
• - In a second, alternative variant can by the wheel bearing 7 the braking forces are detected. As a result, preferably, the sensor elements 9 . 10 on the wheel carrier 1 omitted, all other aforementioned sensor elements of the first variant are arranged as described above.
• - In a third variant, the lateral and longitudinal forces, as well as the wheel contact force via an additional sensor element 23 be recorded. For detecting the usual forces, the sensor elements, as described in the first variant, arranged.
• In a fourth variant, it is possible by an alternative embodiment of the wheel carrier 1 to detect the relevant forces over fewer sensor elements. For this purpose, at least one sensor element in the range of all power paths is needed.
• - Of course, further arrangements of sensor elements 8th . 9 . 10 , 11, 12 conceivable, in particular combinations of the aforementioned variants.

As already indicated, the forces on the wheel 1 preferably via strain gauges and / or magnetostrictive sensors or sensor elements 8th . 9 , 10, 11, 12 and preferably via an additional evaluation electronics 13 further processed.

The evaluation electronics 13 In this case, it preferably uses other vehicle and situation-dependent measured variables from the vehicle.

The detected forces are preferably forwarded to driver assistance systems and other safety-related systems. Furthermore, these data can be used for improved control of actuators in the chassis and for tuning adaptive chassis.

LIST OF REFERENCE NUMBERS

1

wheel carrier

2

Recording for a damper and / or strut

3

Holder for a steering element

4

Suspension element for arranging a suspension control arm

5

Pickup for a brake element

6

Wheel recording

7

Wheel bearings

8th

sensor element

9

sensor element

10

sensor element

11

sensor element

12

sensor element

13

evaluation

20

wheel carrying

21

rotating part of the wheel bearing

22

standing flange of the wheel bearing

23

sensor element

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 10228412 B4 [0003]

Claims (10)

Wheel carrier (1) for detecting forces comprising - at least one wheel carrier element (2, 3, 4, 5) for receiving a brake element and / or for connecting a suspension element with the wheel carrier (1), - a wheel bearing receptacle (6) for receiving a wheel bearing (7), and - at least one sensor element (8, 9, 10, 11, 12), characterized in that the at least one sensor element (8, 9, 10, 11, 12) between the at least one wheel carrier element (2, 3 , 4, 5) and the wheel bearing receptacle (6) is arranged such that the force which is transmitted between the at least one wheel carrier element (2, 3, 4, 5) and the wheel bearing receptacle (6) can be detected in the form of a change in length. Wheel carrier after Claim 1 , wherein the at least one sensor element (8, 9, 10, 11, 12) is arranged on the wheel carrier (1) such that the at least one sensor element (8, 9, 10, 11, 12) detects the detected change in length in the material of the wheel carrier element (2, 3, 4, 5) in the power flow between the at least one Radträgerelement (2, 3, 4, 5) and the wheel bearing receptacle (6) measures. Wheel carrier after Claim 1 or 2 in which the at least one wheel carrier element (2, 3, 4, 5) is designed as a receptacle (3) for a steering element for steering the wheel carrier (1), wherein preferably the at least one sensor element (8) is attached to the receptacle (3). is arranged to detect steering forces, - preferably wherein the receptacle (3) is cup-shaped or hollow cylindrical designed to receive the steering element in a non-positively and / or positively. Wheel carrier according to one of the preceding claims, wherein the at least one wheel carrier element (2, 3, 4, 5) is designed as a receptacle (5) for a brake element, in particular for a brake caliper, - wherein preferably the at least one sensor element (9, 10) is arranged on the receptacle (5) in order to detect braking forces, - Preferably, the receptacle (5) is formed in two parts to mechanically absorb braking forces of a caliper and to introduce into the wheel carrier (1). Wheel carrier according to one of the preceding claims, - wherein the at least one wheel carrier element (2, 3, 4, 5) is designed as a receptacle (2) for a damper and / or shock absorber, - wherein preferably the at least one sensor element (11) on the receptacle (2) is arranged to detect spring and / or damping forces, - Preferably wherein the receptacle (2) cup-shaped or hollow cylindrical is designed to receive the damper and / or strut force-fit and / or positive fit inside. Wheel carrier according to one of the preceding claims, - wherein the at least one wheel carrier element (2, 3, 4, 5) is designed as a chassis element (4) for arranging a suspension arm, wherein preferably the at least one sensor element (12) is arranged on the chassis element (4) in order to detect lateral and / or longitudinal and / or wheel contact forces, - Preferably wherein the chassis element (4) with a suspension arm, in particular movable, is connected. Wheel carrier according to one of the preceding claims, - wherein the at least one sensor element (8, 9, 10, 11, 12) is designed as a strain gauge and / or as a magnetostrictive sensor, - Preferably, the at least one sensor element (8, 9, 10, 11, 12) on at least one Radträgerelement (2, 3, 4, 5), preferably sunk on its surface or in the surface, is arranged. Wheel carrier according to one of the preceding claims, - Wherein the wheel carrier (1) further comprises evaluation electronics (13) for further processing of data of the at least one sensor element (8, 9, 10, 11, 12), - Preferably, the evaluation electronics (13) on vehicle and situation-dependent measurements from a vehicle, which are preferably stored in a data store. Wheel carrier after Claim 8 in which the acquired data and / or forces of the at least one sensor element (8, 9, 10, 11, 12) can be forwarded to a driver assistance system and / or another safety-relevant system within a vehicle, wherein preferably the acquired data and / or Forces can be used for improved control of an actuator in the chassis and / or for tuning an adaptive suspension. Radträgeranordnung (20) with a wheel carrier (1) according to one of Claims 1 to 9 and with a wheel bearing (7), - wherein the wheel bearing (7) consists of rotating part (21) and stationary flange (22) and arranged therebetween rolling elements, - wherein at the stationary flange (22) or at the rotating part (21) at least one sensor element (23) is arranged, - wherein the standing flange (22) with at least one Radträgerelement (2, 3, 4, 5) via the Radlageraufnahme (6) wherein the at least one sensor element (23) has an acting force in the form of a change in length in the material of the stationary flange (22) in the force flow between the at least one wheel carrier element (2, 3, 4, 5) and the rotating part (21). , which serves to connect with a wheel rim, measures.

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