阅读说明：本技术 角度测量装置的布置方式 (Arrangement of angle measuring devices ) 是由 J·斯特拉特曼 F·博伊默 J·霍勒伊德 F·卡拉斯 T·桑德尔 于 2018-06-06 设计创作，主要内容包括：本发明涉及角度测量装置在车辆的底盘上的一种布置方式，其中，所述底盘包括拉杆(1)和具有枢转轴线的枢转轴承(2)，其中，所述拉杆(1)能围绕所述枢转轴线枢转，并且其中所述角度测量装置包括传感器(3)和信号发生器。在此规定，所述传感器(3)在所述枢转轴线的区域中布置在拉杆(1)上，并且所述信号发生器布置在所述枢转轴承上(2)。(The invention relates to an arrangement of an angle measuring device on a chassis of a vehicle, wherein the chassis comprises a tie rod (1) and a pivot bearing (2) having a pivot axis, wherein the tie rod (1) can pivot about the pivot axis, and wherein the angle measuring device comprises a sensor (3) and a signal generator. Provision is made for the sensor (3) to be arranged on the tie rod (1) in the region of the pivot axis and for the signal generator to be arranged on the pivot bearing (2).)

1. Arrangement of an angle measuring device on a chassis of a vehicle, wherein the chassis comprises a tie rod (1) and a pivot bearing (2) having a pivot axis (a), wherein the tie rod (1) is pivotable about the pivot axis (a), and wherein the angle measuring device comprises a sensor (3) and a signal generator (8, 9, 10), characterized in that the sensor (3) is arranged on the tie rod (1) in the region of the pivot axis (a) and the signal generator (8, 9, 10) is arranged on the pivot bearing (2).

2. The arrangement as claimed in claim 1, characterized in that the tie rod (1) has an annularly configured hub ring (4) on the bearing side, which hub ring has a receiving opening (5) for the pivot bearing (2).

3. An arrangement according to claim 2, characterized in that the hub (4) has an outer surface and the sensor (3) is arranged and fixed on the outer surface.

4. An arrangement according to claim 3, characterized in that the outer surface has a recess (6) in which the sensor (3) is guided and held.

5. An arrangement according to any one of claims 1 to 4, characterised in that the pivot bearing is a ball-and-socket joint (2) with a sleeve (7) having a spherical region.

6. An arrangement according to claim 5, characterized in that the signal generator (8, 9, 10) is arranged in a spherical region of the sleeve (7).

7. An arrangement according to any of claims 1-6, characterized in that the signal generator is a permanent magnet (8).

8. The arrangement according to any one of claims 1 to 7, characterized in that the sensor is a magnetically sensitive sensor (3), in particular a Hall sensor (3).

9. An arrangement according to claim 7 or 8, characterized in that the permanent magnet is a cylinder (8) having a cylinder axis (z) arranged in a radial direction with respect to the pivot axis (a).

10. An arrangement according to claim 7 or 8, characterized in that the signal generator is a ring magnet (9), in particular a pole rotor (9).

11. An arrangement according to claim 7 or 8, characterized in that the signal generator comprises a plurality of magnets (10) arranged on a circumference.

Technical Field

The invention relates to an arrangement of an angle measuring device on a chassis of a vehicle according to the preamble of claim 1.

Background

A wheel suspension for a vehicle is known from DE 102006061976 a1 in which a tie rod is pivotably secured to the body of the vehicle by a bearing. An angle measuring device is provided on the wheel suspension, also referred to below as the chassis, by means of which the pivoting of the tie rod relative to the vehicle body about the pivot axis of the bearing can be detected. The angle measuring device has two components, namely a sensor and a signal generator, which are preferably a magnetic sensor and a magnet. According to a preferred embodiment, the magnet is arranged on the outside of the tie rod in the region of the pivot axis, and the magnetic sensor is arranged on a special, body-fixed holder, so that the magnet and the magnetic sensor are effectively connected to one another.

Disclosure of Invention

The object of the invention is an improved arrangement of an angle measuring device, in particular a sensor and a signal generator, on chassis parts which are pivotable relative to one another.

The invention comprises the features of claim 1. Advantageous developments emerge from the dependent claims.

According to the invention, the sensor is arranged on the tie rod in the region of the pivot axis and the signal generator is arranged on the pivot bearing. The pull rod and the pivot bearing are movable relative to each other about at least one pivot axis and can thus assume different angular positions relative to each other. The respective angular position is detected by the interaction of the signal generator and the sensor. Compared with the prior art, the invention has the advantages that: the mounting of the sensor does not require additional support, since the sensor is arranged directly on the tie rod in the region of the pivot axis. The arrangement according to the invention of the sensor also has the following advantages: the sensor, which is preferably located in the sensor housing, is protected from harmful influences from the environment. The pivot axis or pivot bearing can be arranged on the wheel side, for example on a wheel carrier, or on the vehicle body side, for example on an auxiliary frame or rear axle. In both cases, the angular movement and the angular position of the tie rod relative to the wheel carrier or the vehicle are detected.

According to a preferred embodiment, the tie rod has, on the bearing side, a ring-shaped hub ring with a receiving opening, in which a pivot bearing, for example a rubber bearing, is received.

According to a further preferred embodiment, the annular hub has an outer surface on which the sensor is arranged and fixed. The sensor is therefore arranged radially outside the signal generator and is separated from the signal generator by the wall thickness of the annular hub.

According to a further preferred embodiment, a recess in the form of a recess is machined into the outer surface, so that the sensor is preferably guided on the tie rod in a tangential direction. The sensor is fixed to the tie rod by positive engagement of the sensor housing with the tie rod or by an additional connecting element, for example a threaded connection. The recess preferably has two parallel guide surfaces and an end stop surface. The third side is open, so that the sensor can be pushed into the recess and fixed there. The advantages of this arrangement are: the distance between the sensor and the signal generator is relatively small so that the magnetic field of the signal generator reaches the sensor without being reduced or damaged.

According to a further preferred embodiment, the pivot bearing is a ball and socket joint having a sleeve with a spherical region. The receiving opening of the tie rod hub is a spherical cap (Kugelkalotte) and can thus receive the spherical region of the sleeve. The tie rod can thus be pivoted not only about the pivot axis, i.e. the longitudinal axis of the ball socket, but also additionally about an axis extending perpendicular to the longitudinal axis (transverse axis). The spherical region also has the advantage that it provides additional space for the placement of the signal generator.

According to a further preferred embodiment, the signal generator is arranged in a spherical region of the sleeve. By this arrangement, the signal generator is protected from the harmful effects of the surrounding environment.

According to another preferred embodiment, the signal generator is a permanent magnet. The permanent magnet generates a magnetic field, which is effectively connected to a sensor arranged radially outside, without having to be supplied with energy from the outside.

According to a further preferred embodiment, the sensor is a magnetically sensitive sensor, in particular a hall sensor. Hall sensors are commercially available structural elements that respond to changes in magnetic field with a signal. The change in the magnetic field is caused by the relative motion between the signal generator, the magnet and the sensor, and the hall sensor.

According to another preferred embodiment, the permanent magnet is a cylinder having a cylinder axis, which cylinder axis extends in radial direction with respect to the pivot axis. Thus, the north and south poles of the cylindrical magnet are aligned in the radial direction. The magnetically sensitive sensor, also referred to simply as a magnet sensor, is arranged radially outside the cylindrical magnet with respect to the pivot axis. When mounting the magnet, more precisely the table pivot bearing or the ball and socket joint, the magnet and the sensor must be adjusted in order to keep the magnet in the magnetically sensitive or "visible" range of the sensor during operation.

According to a further preferred embodiment, the signal generator can be an annular magnet, i.e. a magnet which is annular and is arranged in an annular groove of the spherical sleeve. As is known from the applicant's patent document DE 10358763 a1, the ring magnet is preferably a pole rotor. In this case, the pole wheel has a plurality of radially magnetized regions, with adjacent regions having respectively opposite magnetization directions, i.e.: a north pole is next to a south pole seen in circumferential direction. In this respect, at each angular position in the visible range of the sensor there is a signal generator configured as a ring magnet. In this case, no adjustment and/or fixing is required with respect to the sensor in the circumferential direction of the ring magnet. In particular, there is no need to align the ring magnet as a signal generator with respect to the sensor at the time of installation.

According to another preferred embodiment, the signal generator is formed by a plurality of cylindrical individual magnets, which are aligned radially with respect to their cylinder axis, distributed over the circumference. In this case, it is also not necessary to adjust and/or align the signal generator and the sensor, in particular during installation.

Drawings

Embodiments of the invention are illustrated in the drawings and described in greater detail below, wherein other features and/or advantages may be derived from the description and/or drawings. The figures show:

FIG. 1 is a partial pictorial view of a vehicle tie rod with a sensor and ball and socket joint;

FIG. 2 is a top view of the tie rod according to FIG. 1;

FIG. 3 is a side view of the drawbar;

FIG. 4 is a radial cross-sectional view of a ball and socket joint with a magnet and a sensor;

FIG. 5 is another embodiment of the present invention with a ring magnet; and is

Fig. 6 is another embodiment of the present invention with cylindrical magnets distributed over the circumference.

Detailed Description

Fig. 1 shows a part of a tie rod 1 of a chassis of a motor vehicle in a 3D representation, which has a pivot bearing 2 in the form of a ball and socket joint 2 and a sensor 3. The tie rods 1, preferably the tie rods 1, are part of the chassis of the motor vehicle or the wheel suspension of the rear axle of the motor vehicle. According to a preferred embodiment, the tie rod 1 is fixed to a wheel carrier, not shown, by means of a ball and socket joint 2. The tie rod 1 has an annularly configured hub 4 with a receiving opening 5, in which the ball and socket joint 2 is received. A recess 6 is machined in the outer circumference of the hub 4 to accommodate the sensor 3.

Fig. 2 shows a top view of the tie rod 1, from which the arrangement of the sensors 3 on the tie rod 1 can be clearly seen. The axis of the ball and socket joint 2 is denoted by a and is also referred to as pivot axis a in the following, since the lever 1 performs a pivoting movement mainly about pivot axis a. However, due to the design of the pivot bearing as a ball and socket joint 2, a pivoting movement about a transverse axis relative to the longitudinal axis a is also possible. The ball and socket joint 2 has a spherical sleeve, which is only partially visible in fig. 2, and which has ends 7a, 7b on its outside which project over the width of the tie rod hub 4. The spherical sleeve is clamped with its two ends 7a, 7b between bearing seats, not shown, of the wheel carrier. As can be seen from the top view, the recess 6 is adapted to the shape of the sensor 3, so that it remains laterally guided and therefore remains fixed against rotation. The housing of the sensor 3 can be fixed on its end face, shown by the rectangle a, by means of a suitable form-fitting or friction-fit connection, so as to prevent it from moving in a direction transverse to the pivot axis a.

Fig. 3 shows the lever 1 with the sensor 3, which is accommodated in the recess 6 with the sensor cable 3a, partially cut away, in a view in the direction of the pivot axis a. The ball socket 7, which is shown by a circular cross section, has a through-opening 7c, through which through-opening 7c the ball socket joint 2 is connected to the wheel carrier via a bolt, not shown. The spherical sleeve 7 is thus fixed to the wheel carrier.

Fig. 4 shows the tie rod 1 in a sectional view, i.e. in a radial section perpendicular to the pivot axis a. It can be seen that the bottom face of the sensor 3 or its housing lies flat on the bottom of the recess 6 which forms a recess with respect to the outer circumference of the drawbar hub 4. The sensor 3 has a so-called sensor cap 3b in the form of a projecting pin, which is connected to an electronic evaluation unit, not shown, by means of a cable 3a, which is received in the bore 1a of the drawbar 1 and thus forms a fixing structure of the sensor 3 against rotation. But the fixing structure may also be omitted due to the above-described guiding function of the recess 6. In the spherical sleeve 7, which is designed as a cylindrical magnet 8, the signal generator 8 is arranged, more precisely, radially inside the sensor 3, wherein a relatively small distance is formed between the signal generator 8 and the sensor 3, which is the magnetically sensitive sensor 3, referred to as magnetic sensor 3 for short, and which is designed as a hall sensor 3 according to a preferred embodiment. The poles of the magnet 8 are arranged on a radially aligned cylinder axis z. The magnet 8 is preferably a permanent magnet 8 and generates a magnetic field whose field lines are substantially radially aligned and in operative connection with the magnetic sensor 3. A signal is generated when the magnetic field changes due to the relative movement between the drawbar 1 and the spherical sleeve 7. During the assembly of the ball and socket joint 2, in particular during the assembly of the ball socket 7 with the (circumferentially unique) magnet 8, it must be ensured by means of calibration that the magnet 8 is located in the "visible range" of the sensor 3.

Fig. 5 shows a second embodiment of the invention, which largely corresponds to the previous embodiment, and therefore the same reference numerals are used for the same components. Instead of the cylindrically embodied permanent magnet 8 (fig. 4), a ring magnet 9 is provided here, which is arranged coaxially to the spherical sleeve axis a in the spherical sleeve 7. The magnetic field of the ring magnet 9 is operatively connected to the sensor 3 such that a relative movement between the ring magnet 9 and the sensor 3 results in the triggering of a signal. Preferably, the ring magnet is a pole rotor, as is known from DE 10358763 a1 of the applicant. In this case, different magnetized regions having opposite orientations are arranged on the circumference.

Fig. 6 shows a third embodiment of the invention, which differs from the previous embodiments in the construction of the signal generator: a plurality of cylindrical magnets 10 (eight in the figure, respectively offset at 45-degree intervals) are arranged uniformly distributed over the circumference in the spherical sleeve 7, with the cylinder axes aligned radially. The magnetic field emitted by the magnet 10 is in operative connection with the sensor 3.

In the second and third exemplary embodiments, no adjustment is necessary during installation, as in the first exemplary embodiment, since in each angular position between the spherical sleeve 7 and the sensor 3 there is an effective connection to the sensor 3 between the ring magnets 9 (fig. 5) or between the cylindrical magnets 10 (fig. 6).

List of reference numerals:

1 draw bar

1a hole

2 ball sleeve joint

3 sensor

3a sensor cable

3b sensor cap

4 hub ring

5 receiving opening

6 notch

7 spherical sleeve

7a end part

7b end part

8 Signal Generator/magnet

9 Ring magnet

10 cylindrical magnet

A rectangle

a pivot axis

Cylinder axis of z magnet 8