JPH0875405A - Rotation angle sensor for controlling the drive machine - Google Patents

Abstract

(57) Abstract: A conventional rotation angle sensor for controlling a driving machine is expensive to handle and manufacture because a plug connecting portion is connected to a casing of the rotation angle sensor via a cable. Therefore, the rotation angle sensor has a simple structure, is easy to operate, and requires few constituent parts. A sensor (20) having a first sensor portion (21) and a second sensor portion (20) is provided, the first sensor portion is fixedly supported, and the second sensor portion is relative to the first sensor portion. Rotatably about an axis of rotation and adjustable via a connecting member, the first sensor part comprising at least one contact track connected to at least one electrical lead Of the type described above, the conductors 66, 66 'are plug contacts 66 of a plug connection 74 in which the conductors 66, 66' are substantially rigidly coupled to the first sensor portion.
It leads to f and 66f '.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation angle sensor (resolver) for controlling a drive machine, of the type described in the preamble of claim 1.

[0002]

2. Description of the Prior Art Rotational angle sensors for electric regulating or adjusting devices, such as are used, for example, for controlling the throttle valves of internal combustion engines in an electric motor manner, are known. The connecting member of the rotation angle sensor can be adjusted by an accelerator pedal connected to the connecting member.

A known rotation angle sensor (see German Patent Application DE 3411455 A1) has a sensor for detecting the rotation angle when the connecting member is operated. The sensor has a stationary sensor part with at least one contact track. The contact track is electrically connected to at least one metal pin embedded in the plastic. An electrical lead is connected to the metal pin. The other contact tracks are correspondingly connected to a plurality of electrical conductors, which are combined in one electrical cable. The cable is loosened and extends out of the housing of the rotation angle sensor through a seal. The cable terminates in a plug connection which is connected to the other correspondingly designed plug connection by means of a bayonet coupling. The cable is used to guide the sensor signal of the rotation angle sensor to the evaluation or control electronics. Since the rotation angle sensor must be able to be easily and easily electrically connected when installed in a vehicle, the plug connection and thus the plug connection provided at the end of the cable cannot be omitted. .

[0004]

The above-mentioned known rotation angle sensor has a drawback in that the electrical connection portion is complicated and many members and many soldering points are required. Cables protruding from the casing of the rotation angle sensor are fragile and interfere during the whole manufacturing process and when incorporating the rotation angle sensor into a vehicle. In addition, the cable between the sensor and the plug connection cannot be dispensed with in the known rotational angle sensor, since a reliable electrical connection to the stationary sensor part of the sensor must be ensured.

Therefore, an object of the present invention is to eliminate the drawbacks of such a known rotation angle sensor.

[0006]

SUMMARY OF THE INVENTION In accordance with the invention, which has solved this problem, a conductor leads to a plug contact of a plug connection, which is substantially rigidly connected to the first sensor part.

[0007]

The rotation angle sensor of the present invention has the advantages that the structure is very simple and the operation is easy.
Also, the number of required parts has been reduced. That is, the number of components required for the rotation angle sensor of the present invention is small. By omitting the cable in the rotation angle sensor, a very robust rotation angle sensor was obtained. The insertion of a suitable counter plug connection is very simple and can be done by hand.

The rotation angle sensor according to the invention enables an advantageous design in which soldering between the contact track and the plug contact can be dispensed with. This construction is particularly sturdy, easy to handle, compact and ensures a reliable electrical connection.

The rotation angle sensor of the invention is advantageously easy to install and has an inexpensive construction. Also, the rotation angle sensor can advantageously be connected only by a locking connection or a press-fitting connection.

Manufacturing the sensor part and the plug connection in one common plastic part greatly simplifies manufacturing, especially mass production.

By arranging the plug connection in a direction perpendicular to the axis of rotation, a particularly small installation space is required for the rotation angle sensor, which requires a particularly easy installation space. Can be provided to. By laterally disposing at least one plug contact, the rotation angle sensor can be particularly short.

The provision of a telescoping device between the plug contact and the contact track ensures a particularly reliable electrical connection.

[0013]

DETAILED DESCRIPTION OF THE INVENTION Rotational angle sensors constructed in accordance with the present invention are used to control a variety of drive machines. The drive machine is, for example, an Otto engine (spark ignition engine) in which the throttle valve is adjusted by an adjusting motor. In this case, the rotation angle sensor is used to generate an electrical signal, which is fed to a regulating motor which regulates the throttle valve. However, this drive machine may also be a diesel motor or an electric motor. In this case, the angle-of-rotation sensor in each case produces a signal which, after corresponding conversion, controls the output of the drive machine. The rotation angle sensor is usually operated via an accelerator pedal.

FIG. 1 shows a longitudinal section through an advantageous embodiment of the invention. The casing 2 has an inner chamber 6. The casing 2 has a bowl-like shape and has a cylindrical region 2a and an end face side region 2b. The inner chamber 6 is surrounded or closed radially by a cylindrical region 2a, axially by the end region 2b of the casing 2 on the one hand and by a plastic part 10 on the other hand. As materials for the plastic part 10, easily deformable and non-conductive materials are used, respectively. The plastic part 10 has an end face side 11 facing the inner chamber 6. Interior room 6 to the surroundings
A seal 8 is provided between the plastic part 10 and the cylindrical region 2a of the casing 2 in order to improve the sealing properties of the. The plastic part 10 is integrally formed with a locking tongue that engages with a locking recess provided in the casing 2. This locking tongue allows a simple locking connection between the casing 2 and the plastic part 10 without the use of screws, respectively. The plastic part 10 forms one component of the casing 2 in the assembled state. An opening 12 is provided in the end surface side region 2b of the casing 2.
Is provided. Through the opening 12 extends into a generally cylindrical portion 14. The cylindrical portion 14 is formed in the shape of a rotating shaft. The cylindrical portion 14 has a first end 16 which projects into the inner chamber 6, a central portion 17 which extends through the opening 12 and an outwardly directed second end 18.
And have. The cylindrical portion 14 is pivotably or rotatably supported in the opening 12 about an axis of rotation 19.

The sensor 20 is a main component of the rotation angle sensor. The sensor 20 has a first sensor portion 21 and a second sensor portion 22. The first sensor part 21 is a component part of the plastic part 10. The first sensor part 21 cannot rotate relative to the casing 2 via the plastic part 10 (that is, this casing 2
Can be rotated together with). The second sensor portion 22 is non-rotatably coupled to the cylindrical portion 14, is non-rotatably molded to the cylindrical portion 14, or is integral with the cylindrical portion 14. It is configured. The second sensor part 22 together with the cylindrical part 14 is pivotally supported with respect to the casing 2 and thus the first sensor part 21 about a rotation axis 21 by a predetermined rotation angle. Has been done.

On the end face side 11 of the plastic 10 facing the inner chamber 6, a conductive resistance track used as a contact track 24 is printed. The contact track 24 is very thin. In the drawings, the thickness of the contact track 24 is shown greatly exaggerated for clarity. In FIG. 1, the plastic part 10 and the contact track 24 are shown in cross section.

A contact point 26 is provided on the second sensor portion 22. The contact point 26 is configured, for example, as an electrical wiper. Second sensor part 2
The second contact point 26 electrically contacts the contact track 24 of the second sensor part 21, at least temporarily, in relation to the relative position of the first sensor part 21 with respect to the second sensor part 22. In the illustrated embodiment, the second sensor part 22 is connected to three further contact points 26a, 26b, 26c in the shape of a wiper. These other contact points 26a, 26b, 26c are in electrical contact with contact tracks 24a, 24b, 24c printed on the end face side 11 of the plastic part 10. The two contact points 26, 26a are electrically connected to each other, for example.

Depending on the respective relative rotation angles of the second sensor part 22 with respect to the first sensor part 21,
Sensor signals are obtained at plug contacts 66f and 66f 'which will be described later. This sensor signal indicates the contact point 2
Contact tracks 24, 24 of 6, 26a, 26b, 26c
It is analog or digital depending on the configuration of each of a, 24b, and 24c. Many other redundant sensor signals can be obtained. One of the sensor signals of the rotation angle sensor is analog (potentiometer function)
And the other sensor signal can be configured to be digital (switching function).

An introducing element 29 is connected to the cylindrical part 14 or directly to the second sensor part 22. The introduction element 30 is also connected to the second sensor part 22 or the cylindrical part 14.

FIG. 2 is an end view of the rotation angle sensor selected for the illustrated embodiment.

In all the drawings, the same parts or parts having similar functions are denoted by the same reference numerals.

The rotation angle sensor has a connecting member 33. The connecting member 33 is connected to an accelerator pedal (not shown) via, for example, a transmission means (not shown). By operating the accelerator pedal, the connecting member 33 can be adjusted about the rotation axis 19. A slightly larger lever 34 and a slightly smaller lever 36 are integrally formed with the connecting member 33 (FIG. 2). The connecting member 33 is formed so that the difference between the axial portion 38 and the radial portion 39 can be seen roughly. The radial portion 39 has a diameter that is significantly larger than the axial portion 38. The axial portion 38 extends coaxially with the axis of rotation 19. A hole 40 is provided in the axial portion 38, which is formed by stepping.

The second end 18 of the cylindrical portion 14 has a first region 41 having a relatively smooth, cylindrical surface,
Second region 4 having a predetermined profile (cross-sectional shape)
It is divided into two. The profile of the region 42 has ridges and depressions when viewed in the circumferential direction. These ridges and depressions in the region 42 are the same as those shown schematically in FIG. 1 by the solid line drawn parallel to the axis of rotation 19.

A region 41 having a cylindrical surface is provided with holes 40.
It has a diameter slightly larger than the diameter of. Connection member 3
The axial end portion 38 of the second end portion 1 of the cylindrical portion 14.
A region 41 extending over 8 and having a cylindrical surface
Part or all of the inside of the hole 40 of the connecting member 33,
On the other hand, when the second region 42 is outside the hole 40, the relative coupling of the coupling member 33 with respect to the cylindrical portion 14 and thus also with respect to the second sensor portion 22 with a predetermined torque is carried out. It can be easily rotated. By structurally selecting the pressure between the cylindrical portion 14 in the region 41 and the hole 40 of the connecting member 33, it is advantageous for adjusting the desired or rotational angle sensor for pivoting. A certain torque can be selected. Second connecting member 33
The profiled region 42 is located outside the bore 40 of the connecting member 33 for pivoting with respect to the sensor part 22 of the or for adjusting the rotational angle sensor. The connecting member 33 occupies a first position in relation to the second sensor portion 22.

The ridges in the profiled region 42 of the cylindrical portion 14 are defined by the region 41 having a cylindrical surface.
Raised beyond the diameter of. When the connecting member 33 is slid further axially, ie parallel to the axis of rotation 19, relative to the cylindrical portion 14, the profiled region 42 is located in the bore 40 of the connecting member 33. invade. This is achieved by the ridges of the profile in the region 42 cutting into and penetrating the peripheral wall of the hole 40.
This is because at least the region of the hole 40 of the connecting member 33 is made of a relatively flexible or plastically deformable or elastically deformable material (as is the case with common plastics). The region 42 having the raised portion is
It must be stiffer than the part of the hole 40 where the ridge is to be inserted. After sliding the connecting member 33 axially parallel to the second sensor portion 22, the connecting member 33 assumes a second position in relation to the second sensor portion 22.

However, it is also possible to provide a corresponding profile in the region of the hole 40 of the connecting member 33 into which the profiled region 42 penetrates. In this case, the profile of the cylindrical region 42 is
It is also possible that the area of the hole 4 of the connecting member 33 is made of a relatively hard material.

It is also possible for the profile with the ridges to be provided on the connecting member 33 rather than on the cylindrical portion 14. In such a variant embodiment, the ridges of the coupling member 33 cut into the cylindrical part 14 and penetrate into this part during assembly after adjustment of the sensor.

In the rotational angle sensor (second position) which has been adjusted and has been assembled, all the members are connected in a form-connecting manner (engagement by having corresponding shapes). Is obtained. The connecting member 33 is connected to the sensor portion 222 in a form-fitting manner. No screws or other connecting members are needed for this. Also, no fixing member is required.

Cylindrical part 1 in region 41 or 42
By pressing or friction between 4 and the hole 40 of the connecting member 33, the connecting member 33 is fixed in place on the cylindrical part 14.

Within the region of the second end 18 of the cylindrical portion 14, a recess having a relatively small diameter can be provided. This diameter is preferably smaller than the diameter of the regions 41 and 42. When the connecting member 33, which is preferably made of a soft elastic material, is put on, the connecting member 33 has a second radial position.
Of the material 18 is pressed, thereby forcing some of the material into the recess. By such additional means, undesired slipping of the connecting member 33 out of the cylindrical portion 14 is avoided. The recess in the area of the second end 18 forms a snap engagement device 46. This snap-engaging device 46 is provided, for example, at the transition from the second end 18 to the central part 17 of the cylindrical part 14, but is covered by the hole 40 of the connecting member 33.
It may be provided in another region of the end portion 18 of the. The snap engagement device 46 is further improved by providing a material that projects from the inside at the hole 40 and penetrates into the recess.

To form the snap engagement device 46,
It is also possible to provide the cylindrical portion 14 with an annular ridge which engages in a recess provided in the region of the hole 40.
This is not shown in the drawing as it is a simple inverse of the illustrated embodiment.

The snap-engagement device 46 is not necessary, but is an additional improvement to the rotational angle sensor.

A key profile 48 is integrally molded at the end of the second end 18 of the cylindrical portion 14 connected to the sensor portion 22 opposite the central portion 17. . In the illustrated embodiment, the key profile 48 is a laterally extending slit into which a screwdriver as a tool can be engaged. The second end 18 is partly inserted into the hole 40 (first position), whereas the cylindrical part 14 and thus the second sensor part 22 are cylindrical, for example by means of a suitable tool. The part 14 is fixed and the connecting member 33 is rotated, or the connecting member 33 is fixed and the cylindrical part 14 is rotated.
Is rotated, it is rotated relative to the connecting member 33 via the key profile 48. When the connecting member 33 is completely fitted onto the second end 18 (second position), pivoting is no longer possible. Area 4
When only 1 is located in the hole 40 (first position), relative rotation is possible. Also, when the profile of the second region 42 is located in the hole 40 (second position), the two parts 1
The relative rotation of 4, 33 is not possible with ordinary means. Two
In order to fix the relative rotation of the two parts 14, 33, it does not matter here whether the first region 41 of the cylindrical part 14 projects beyond the bore 40 axially. FIG.
Shows the second position of the rotation angle sensor.

In the illustrated embodiment (FIG. 1), the axial portion 38 of the connecting member 33 is an axially cylindrical portion 14 of the connecting member 33.
Protruding beyond. Within this area the hole 40 is closed by a sealing compound 50. This is the connecting member 3
The purpose of this is to prevent a possibly unjustified attempt to rotate 3 relative to the second sensor part 22 and thus unduly alter the adjustment of the rotation angle sensor. Within the area of the connecting member 33 beyond the cylindrical portion 14, a hole 40 with a narrow point can be provided. This prevents the sealing compound 50 from falling out of the hole 40.

The rotation angle sensor has a reset device 56. In the illustrated embodiment, the reset device 56 is formed by a reset spring. One end 56a of the reset spring acts on the end of the casing 2, and the other end 56b of the reset spring acts on the connecting member 33 (FIG. 2). Reset spring 56
Acts in a clockwise direction when viewed in the state shown in FIG. The movement of the connecting member 33 is restricted by the smaller lever 36 of the connecting member 33 coming into contact with the first casing stopper 61 provided on the casing 2 when viewed in the clockwise direction. The reset device 56 may have multiple reset springs. These reset springs
It is strong enough to provide sufficient force to reliably reset the coupling member 33 towards the first casing stopper, even if one of the reset springs breaks.

The connecting portion 6 is attached to the lever 34 of the connecting member 33.
4 are provided. At this connecting point 64, for example, a Bowden cable (not shown) connected to an accelerator pedal
Works. The Bowden cable moves the connecting member 33 in the counterclockwise direction until the lever 34 contacts the second casing stopper 62 provided in the casing 2 (FIG. 2).
Then, it operates against the reset device 56.

When the connecting member 33 comes into contact with the first casing stopper 61, this is the initial position. in this case,
At this initial position, a predetermined value is given to the sensor signal transmitted from the rotation angle sensor. This position of the connecting member 33 in the first casing stopper 61 normally corresponds to the unloaded position of the drive machine. It is desirable that the value of the sensor signal is zero in this initial stage. When the connecting member 33 comes into contact with the second casing stopper 62, this is the maximum swivel angle of the sensor and thus the full load position of the drive machine. Casing stopper 6
Since 1, 62 are either directly attached to the casing or are integrally molded, the casing stopper can be constructed very solid without problems.

To adjust the rotation angle sensor (the rotation angle sensor is in the first position), the connecting member 33 is actuated towards the first casing stop 61 and the second sensor part 22 is fitted with a plug. It is adjusted with the aid of suitable tools until the desired values at the contacts 66f, 66f 'corresponding to no-load operation occur. The connecting member 33 is then pushed leftward (as viewed in FIG. 1) along the axis of rotation 19. At this time, the introducing element 30 is supported by the plastic part 10. As a result, the connecting portion 33 becomes the sensor portion 22.
From the first position to the second position.

An electrical conductor 66 is embedded in the plastic part 10 (FIG. 1). The conductor 66 is, for example, a wire having a directional cross section. Electrical lead 66
Extends through the plastic part 10 and
Ends directly on the end face side of the plastic part 10, which is oriented towards. Contact tracks 24, 24 on the end face side 11
a, 24b, and 24c are printed. Printing techniques give the contact track an arbitrary shape. For example, the contact track 24 is connected to an electrical lead 66. It is manufactured by shaping the contact track 24 by a printing technique such that the contact track 24 is shaped so as to cover the end of the electrical conductor 66 which ends on the end side 11 of the plastic part 10. . Since the contact track 24 is provided by printing technology and is very thin, it is important that the end of the electrical conductor 66 connected to the contact track 24 ends directly on the end side 11 of the plastic part 10. . The electrical conducting wire 66 must not project beyond the end face side 11, and at the end of the electrical conducting wire 66, the end face side 11
The inner recess should not occur. This is because a reliable electrical connection between the conductor 66 and the contact track 24 is not guaranteed in any case.

The electric conducting wire 66 is provided in the partial regions 66a, 6a.
It is divided into 6b, 66c, 66d, 66e and 66f (FIG. 1). From the end face side 11 of the plastic part 10 facing the inner chamber 6 side, the partial area 6 of the electrical conductor 66
6a extends. Keep a short distance from the end face side 11,
The electrical conductor 66 is bent at a right angle. Here, the conducting wire 66 has moved to the partial region 66c. Partial area 6
6c shows the plastic part 10 facing the inner chamber 10.
Extends substantially parallel to the end face side 11 of the. The conductor 66 is bent again at a predetermined interval with respect to the first bent portion of the conductor, and extends again at a right angle to the end surface side 11 in the partial region 66d. The conducting wire 66 is newly bent at a predetermined interval and moves to the partial region 66e. The partial area 66e emerges from the material of the plastic part 10. The conductor 66 here forms the plug contact (66f). In the first partial region 66a, the thick portion 66 is formed on the electrical conducting wire 66.
b is molded. Instead of the thick portion, a narrowed portion of the conducting wire 66 may be provided.

The distance between the end face 11 and the partial area 66c of the conductor 66 is described below as distance a (FIG. 1). The distance a is chosen to be as small as possible, but at least large enough to guarantee a simple production form. The partial area 66a of the electrical conductor 66 is very short, so that the electrical conductor 66 and the plastic part 10 are
Even if a very different thermal expansion occurs, the extent of length extension is small, so the end surface side 11
Therefore, there is neither a large protrusion into the inner chamber 6 nor an excessively large concave portion on the end face side 11. Thus, the electrical conductors 66 ensure a good electrical connection with the contact track 24 if necessary.

The thick portion 66b facilitates fixing of the electrical conducting wire 66 in the plastic portion 10. However, such a thick portion 66b cannot be arbitrarily increased in manufacturing technology, and thus the thick portion 66b is thick. The fixing by means of the part 66 is only possible and inadequate. The thickened portion 66b, or the corresponding narrowed portion, together with the conductor 66, forms the plastic portion 10.
Makes it significantly easier to manufacture. Depending on the manufacturing method, the thick portion 66b may be omitted.

The partial area 66d of the conductor 66 is relatively long.
As a result, when the temperature changes, the change in length between the partial region 66d of the conductive wire 66 and the plastic 10 is relatively different. Since the partial region 66c of the conductor 66 extends substantially parallel to the end face side 11, the conductor 66 is securely fixed in the plastic portion 10 at this location. As a result, even if the conductor 66 has a relatively large length change in the partial region 66d, the partial region 66a is not affected thereby. Even if the temperature change between the partial region 66d of the conductor 66 and the plastic part 10 is very large, and thus the difference in stretching is large, the position of the partial region 66a with respect to the end face side 1 is as good as not changing. is there. The conductor 66 is very accurately fixed by the partial region 66c in the direction orthogonal to the end face side 11. Sub-region 6 shown as an example
The double fold between 6a and the partial area 66d forms a telescopic loop 72. The expansion / contraction loop 72 prevents the length change occurring in the partial region 66d in the partial region 66a, so that the electrical conducting wire 66 does not project on the end face side 11 or form an unacceptable recess here. consider.

The plastic part 10 also forms the plug connection 74 of the bayonet coupling. Via this plug-in coupling, a cable not shown is connected to a rotation angle sensor, in which case the rotation angle sensor can supply a sensor signal to a device not shown via this cable. it can.

The spacing s is shown in FIG. This distance s indicates the distance between the plug contact 66f and the outer surface of the casing 2. Depending on the size of the bayonet coupling used, the plug connection 74
Cannot be arbitrarily small, so the spacing s cannot be less than a predetermined amount. That is, the partial area 66d must have a predetermined minimum size. Even if the partial area 66d is made large, the presence of the elastic loops 72 makes it possible, even at extreme temperatures, for the electrical conductors 66 and the contact tracks 74.
It does not adversely affect the connection between and.

Next to the contact track 24, there is provided a contact track 24a and a wiper 26a correspondingly connected to the second sensor portion 22. Contact track 24a is connected to an electrical lead 66 '. The end of this conductor 66 ', which forms the plug contact 66f', must also be arranged at a distance from the surface of the casing 2 to the extent that it can now be contacted, for example by two rows of bayonet couplings. Telescopic loop 7 in the conductor 66 '
2'is provided.

A casing base 6 is integrally formed with the casing 2. The casing base allows the rotation angle sensor to be rigidly fixed to the provided base, for example via screws.

The connecting member 33 has the first member in one rotation direction.
Being limited by the casing stopper 61 of the second embodiment and by the second casing stopper 62 in the other direction of rotation, each excess operating force is also kept away from the cylindrical part 14 and thus also the sensor 20. .

The reset spring of the reset device 56 has a problem of adjusting the connecting member 33 to its initial position, and also a problem of axially loading the cylindrical portion 14 through the connecting member 33 with a slight force. Therefore, in the operating state, the introducing element 29 abuts the casing 2 as shown in FIG. In the normal operating state, the introducing element 39 does not contact other parts. As the connecting member 33 pushes the cylindrical portion 14 in the axial direction, the introducing element 30 is moved by the wipers 26, 2
6a, 26b and 26c are provided so that the other parts of the rotation angle sensor are not damaged by excessive pressure.

The plug connection 74 is a component of the bayonet coupling, the other parts of the bayonet coupling being plugged together with the plug connection 74 in this case not being shown for the sake of clarity.

In principle, at least one partial area 6
It is also possible to arrange 6f in the same direction, that is, parallel to the rotation axis 19, instead of arranging 6f in the direction orthogonal to the rotation axis 19 as shown in FIG. However, this has drawbacks. Because the plug connection 74 is followed by a bayonet coupling, a total of one very long structure is created, which is often the case in the installation space provided. Because you can't. In the illustrated embodiment, the plug connection 74 of the bayonet coupling extends in a direction perpendicular to the axis of rotation 19, and the electrical cable that follows is also closed in a direction perpendicular to the axis of rotation 19. By doing so, much is gained in relation to the installation space required for the rotation angle sensor. The extension loop 72 or 72 'allows the plug contacts 66f or 66f' to be laterally arranged in an advantageous manner, without thereby reducing the electrical reliability.

In the illustrated embodiment (FIG. 1), the end of the cylindrical portion 14 has a hole 40 in the connecting member 33.
Plunge inside. However, it is also possible to provide corresponding holes in the cylindrical portion 14 by correspondingly reversing the arrangement shown. In this case, the connecting member is configured in this variant such that the cylindrical part of the connecting part engages in the bore provided in the cylindrical part 14. In this variant as well, by axially adjusting the connecting member 33 with respect to the cylindrical part 14, the two parts are brought into a first position in which these two parts 14, 33 can rotate relative to one another. From this it is possible to adjust these two parts 14, 33 to a position in which they cannot rotate relative to each other.

In the illustrated embodiment, the connecting member 33 is rotated relative to the cylindrical portion 14 in the first position. This provides the rotatability of the connecting member 33 and thus the adjustability for the second sensor part 22. The same rotatability means that the cylindrical part 14 and the second sensor part 22 are connected and these two parts 14
And 22 are obtainable when adjustable from the first position to the second position. In this case, in the first position the cylindrical part 14 is rotatable with respect to the second sensor part and in the second position these two parts 14, 22 are relatively fixed. In this case, the possibility of adjustment between the connecting member 33 and the cylindrical part 14 can be dispensed with. In this variation as well, in the first position the coupling member 33 is rotatable with respect to the second sensor part 22, so that also in this variation the coupling member 33 can be adjusted with respect to the second sensor part 22. Sex is obtained.

The plastic part 10, the first sensor part 21, the electrical conductors 66, 66 'and the plug contacts 6
6f, 66f 'and the plug connection 74 form one common integrated sensor / plug component 80 which is easy to manufacture, sturdy and compact. This component 80 is easy to handle and long lasting. There are no problematic solder points or fragile cables that go out and hang down. The connection of this sensor / plug component 80 with the casing 2 results in a compact, rugged yet easily adjustable rotary angle sensor. The rotation angle sensor with the sensor / plug component 80 according to the invention allows for quick and easy coupling and uncoupling of further extending cables (not shown). As shown in FIG. 1, the sensor / plug component 80 includes a predominantly plastic portion 10, an embedded sensor portion 21, at least one electrical lead 66, and an integrally molded plug connection 74. And consists of. In this case, the plastic part 10 may comprise different plastic parts which are molded together by casting.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a rotation angle sensor according to an embodiment of the present invention.

FIG. 2 is an end view of the rotation angle sensor shown in FIG.

[Explanation of symbols]

2 casing, 2a cylindrical region, 2b end face region side, 6 inner chamber, 8 seal, 10 plastic part, 11 end face side, 12 opening, 14 cylindrical part, 16 first end part, 17 central part, 1
8 second end, 19 axis of rotation, 20 sensor,
21,22 sensor part, 24, 24a, 24b, 2
4c contact track, 26 contact points (wiper),
29, 30 Introducing element, 33 Connecting member, 34 Larger lever, 36 Smaller lever, 38
Axial part, 40 holes, 41 area, 42 second
Area, 46 snap engagement device, 48 key profile, 50 sealing compound, 56 reset device, 56a end, 61a end, 61,62 casing stopper, 64 connection point, 66,66 'electrical lead, 66a, 66b, 66c , 66d, 66e, 6
6f partial area, 72, 72 'telescopic loop, 74
Plug connection, 76 Casing base, 80 Sensor / plug components

Front Page Continuation (72) Inventor Uwe Fuerte Otterweier Strassberger Strasse 4 Germany (72) Inventor Erik Menle Oberkirch Freiwald 4 Germany

Claims (7)

[Claims] 1. A rotation angle sensor for controlling a drive machine, comprising a sensor (20) comprising a first sensor part and a second sensor part, the first sensor part comprising: Fixedly supported, the second sensor part being rotatably supported with respect to the first sensor part about an axis of rotation and adjustable via a connecting member,
The sensor part of the device comprises at least one contact track connected to at least one electrical conductor, said conductor (66, 66 ') being the first sensor part (2
Rotation angle sensor for controlling a drive machine, characterized in that it leads to plug contacts (66f, 66f ') of a plug connection (74) which is substantially rigidly connected to 1). 2. A first sensor part (21) and a plug connection.
Rotation angle sensor according to claim 1, characterized in that (74) is a constituent part of a common plastic part (10). 3. At least one contact track (24, 24a, 24b, 24c) in the plug connection (74).
3. A rotation angle sensor according to claim 1, further comprising plug contacts (66f, 66f ') connected to the. 4. At least one plug contact (66f,
66f ') is arranged in a direction substantially orthogonal to the axis of rotation (19), the rotation angle sensor according to any one of claims 1 to 3. 5. The rotation angle sensor as claimed in claim 1, wherein the plug connection (74) is a coupling casing. 6. Contact tracks (24, 24a, 24b,
The rotation angle sensor according to any one of claims 1 to 5, wherein a telescopic device is provided between 24c) and the plug contact (66f, 66f '). 7. A rotation angle sensor according to claim 6, wherein the telescopic device is configured as a telescopic loop (72).