Wiegand sensor

Abstract

The invention relates to a Wiegand sensor (100-1; 100-1, 100-2), comprising a sensor housing (1), a wiegand (2), a sensor coil (3) surrounding the wiegand (2), a first magnetically conductive element (4) arranged at a first end (2.1) of the wiegand (2), and a second magnetically conductive element (5) arranged at a second end (2.2) of the wiegand (2), the two magnetically conductive elements (4, 5) each comprising a sensing portion (4.3, 5.3) which is directed towards a median plane (M) and projects from the sensor housing (1) at a sensing side (E), the sensor housing (1) comprises a sensing side contact surface (4.3. 2, 5.3. 2) outside the sensor housing (1); wherein the two magnetically conductive elements (4, 5) each comprise a contact (4.5, 5.5) which protrudes from the sensor housing (1) on the contact side (K) and which comprises a contact-side contact surface (4.5. 1, 5.5. 1) outside the sensor housing (1); wherein an electrically conductive contact (4.4, 4.6) is arranged on each of the sensing-side contact surface (4.3. 2) and the contact-side contact surface (4.5. 1) of the first magnetically conductive element, the electrically conductive contacts (4.4, 4.6) being electrically connected to the first sensor coil terminal (3.2); an electrically conductive contact element (5.4, 5.6) is arranged on each of the sensing-side contact surface (5.3.2) and the contact-side contact surface (5.5.1) of the second magnetically conductive element (5), and the electrically conductive contact elements (5.4, 5.6) are electrically connected to the second sensor coil terminal (3.3).

Description

Technical Field

[0001] The present invention relates to a Wiegand sensor, comprising: a Wiegand wire, a sensor coil surrounding the Wiegand wire, the coil having a first sensor coil terminal and a second sensor coil terminal, a first magnetic element disposed at a first end of the Wiegand wire, and a second magnetic element disposed at a second end of the Wiegand wire opposite to the first end. Background Technology

[0002] DE 10 2020 100 732 A1 discloses a type of Wiegand sensor, wherein the Wiegand sensor includes a sensor housing, in which a Wiegand wire, a sensor coil and two magnetic elements are housed.

[0003] Furthermore, WO 2022 / 230651 A1 discloses a Wiegand sensor of the type described at the beginning, wherein each of the two magnetically conductive elements includes a sensing portion pointing through the center of the Wiegand filament and perpendicular to the midplane of the Wiegand filament. These sensing portions are capable of effectively coupling the excitation magnetic field interacting with the Wiegand sensor into the Wiegand filament, thereby realizing a reliable Wiegand sensor. Summary of the Invention

[0004] The purpose of this invention is to provide a reliable Wiegand sensor that can be used for multiple purposes.

[0005] According to the present invention, this objective is achieved by a Wiegand sensor having the features of independent claim 1.

[0006] The Wiegand sensor according to the invention includes a sensor housing, which is preferably formed from a plastic injection molded part.

[0007] The Wiegand sensor according to the invention further comprises a Wiegand wire and a sensor coil radially surrounding the Wiegand wire, the coil including a first sensor coil terminal and a second sensor coil terminal, wherein the Wiegand wire and the sensor coil are fixed within the sensor housing, i.e., at least partially arranged within and fixedly connected to the sensor housing. Such Wiegand sensors are also commonly referred to as pulse-wire sensors. The Wiegand wire typically has a hard magnetic sheath and a soft magnetic core, or vice versa. Under the influence of an external magnetic field, the magnetization direction of the Wiegand wire suddenly reverses, thereby generating a short Wiegand voltage pulse in the sensor coil radially surrounding the Wiegand wire, which can be detected at the two sensor coil terminals of the sensor coil. This effect is commonly referred to as the Wiegand effect or the macroscopic Barkhausen effect.

[0008] The Wiegand sensor according to the invention further includes two integrally formed magnetic elements, which are also fixed within the sensor housing. The first magnetic element is disposed at a first end of the Wiegand wire, and the second magnetic element is disposed at a second end of the Wiegand wire opposite to the first end. The magnetic elements are made of a soft magnetic material, preferably ferrite, and are used to selectively guide an external excitation magnetic field to both ends of the Wiegand wire, thereby generating an excitation magnetic field within the Wiegand wire that extends as far as possible axially.

[0009] In the Wiegand sensor of the present invention, each of the first and second magnetic elements includes a sensing portion that extends from a body portion preferably perpendicular to and radially surrounds the Wiegand filament, and points to a mid-plane that passes through the center of the Wiegand filament and is perpendicular to it. Therefore, the distance between the sensing portion of each magnetic element at its end opposite to its respective body portion and the mid-plane is less than the distance between the body portion of the corresponding magnetic element and the mid-plane. Preferably, each magnetic element has an end face extending parallel to the mid-plane (i.e., perpendicular to the Wiegand filament) at its end opposite to its respective body portion.

[0010] According to the present invention, the sensing portions of the two magnetic elements each extend from the sensor housing on the sensing side, and each includes a sensing-side contact surface extending parallel to the Wiegand wire outside the sensor housing, wherein the sensing-side contact surfaces of the two magnetic elements are arranged parallel to each other.

[0011] According to the present invention, a conductive contact is arranged on the sensing-side contact surfaces of the two magnetic elements, wherein the contact arranged on the sensing-side contact surface of the first magnetic element is electrically connected to the terminal of the first sensor coil, and the contact arranged on the sensing-side contact surface of the second magnetic element is electrically connected to the terminal of the second sensor coil. Therefore, the Wiegand sensor according to the present invention can be electrically fixed to the coil contact surface of a correspondingly molded printed circuit board for electrical contact with the sensor coil via the contacts arranged on the sensing-side contact surfaces of the two magnetic elements, for example, through solder joints or other types of material bonding conductive connections.

[0012] According to the present invention, each of the two magnetic elements, namely the first magnetic element and the second magnetic element, further includes a contact portion that extends from the sensor housing on a contact side different from the sensing side, and includes a contact-side contact surface on the outside of the sensor housing that extends parallel to the Wiegand wire, wherein the contact-side contact surfaces of the two magnetic elements are arranged parallel to each other, but not parallel to the sensing-side contact surfaces of the two magnetic elements.

[0013] According to the present invention, a conductive contact is arranged on the contact surfaces of the two magnetic elements, wherein the contact on the contact surface of the first magnetic element is electrically connected to the terminal of the first sensor coil, and the contact on the contact surface of the second magnetic element is electrically connected to the terminal of the second sensor coil. Therefore, the Wiegand sensor according to the present invention can be electrically fixed to the coil contact surface of a correspondingly molded printed circuit board for electrical contact with the sensor coil via the contacts arranged on the contact surfaces of the two magnetic elements.

[0014] Therefore, the Wiegand sensor according to the invention is configured to be electrically fixed to the coil contact surface of a correspondingly molded printed circuit board in two different orientations. Specifically, the Wiegand sensor according to the invention is configured to be fixed to the printed circuit board in a first orientation by contacts arranged on the sensing-side contact surface, such that the sensing portion of the magnetically conductive element extending from the sensor housing on the sensing side faces the printed circuit board; and is further configured to be fixed to the printed circuit board in a second orientation by contacts arranged on the contact-side contact surface, such that the sensing portion extending from the sensor housing on the sensing side does not face the printed circuit board.

[0015] Therefore, the Wiegand sensor of the present invention can be used with different excitation magnet arrangements without requiring structural modifications to the Wiegand sensor. For example, in a first orientation, the Wiegand sensor of the present invention can effectively couple the excitation magnetic field generated by an excitation magnet arrangement disposed on the side of the printed circuit board opposite to the Wiegand sensor to the Wiegand wire through the sensing unit; in a second orientation, the sensing unit can effectively couple the excitation magnetic field generated by an excitation magnet arrangement disposed on the same side of the printed circuit board as and adjacent to the Wiegand sensor to the Wiegand wire. This provides a versatile and reliable Wiegand sensor.

[0016] In a preferred embodiment, the contact surfaces of the two magnetic elements are arranged perpendicular to the sensing contact surfaces of the two magnetic elements. This allows for particularly reliable detection of excitation magnets arranged laterally adjacent to the Wiegand sensor when the Wiegand sensor is fixed in the second orientation, i.e., when the Wiegand sensor is fixed by contacts arranged on the contact surfaces. Therefore, in this preferred embodiment, the Wiegand sensor of the present invention can be arranged either axially adjacent to the excitation magnet in the first orientation or radially adjacent to the excitation magnet in the second orientation, and in each case, the excitation magnetic field generated by the arrangement of the excitation magnets can be effectively coupled to the Wiegand wire by the sensing unit.

[0017] Preferably, the sensing portions of the two magnetic elements are each arranged at an angle between 65° and 85° relative to the intermediate plane, and particularly preferably at an angle between 70° and 80°, so that the excitation magnetic field interacting with the Wiegand sensor can be coupled into the Wiegand wire particularly effectively, thereby providing a particularly reliable Wiegand sensor.

[0018] Preferably, the outer diameter of the winding segment of the sensor coil in the intermediate planar region is larger than its outer diameter in the axial end region of the winding segment, so as to generate a particularly significant Wiegand voltage pulse in the sensor coil, thereby providing a particularly reliable Wiegand sensor.

[0019] Advantageously, the distance between the sensing portions of the two magnetic elements is at most 50% of the distance between the main portions of the two magnetic elements surrounding the Wiegand wire, preferably at most 25%. This enables the realization of a particularly reliable Wiegand sensor.

[0020] In a preferred embodiment, each of the two magnetic elements has a conductive coating that forms all the conductive contacts arranged on the respective magnetic element, namely, contacts arranged on the sensing-side contact surface of the respective magnetic element and contacts arranged on the contact-side contact surface of the respective magnetic element. This allows for relatively simple obtaining contacts with good conductivity and good conductive connection to the corresponding contact surfaces of the printed circuit board. This provides an easy-to-manufacture and reliable Wiegand sensor device.

[0021] Preferably, the first sensor coil terminal is conductively fixed to the conductive coating of the first magnetic element, for example, by solder joints or other types of material bonding conductive connections, and the second sensor coil terminal is conductively fixed to the conductive coating of the second magnetic element. This provides a Wiegand sensor device that is easy to manufacture and inexpensive.

[0022] In another preferred embodiment, the Wiegand sensor of the present invention includes a conductive first sheet metal body, in which a first magnetic element is disposed, and the first sheet metal body forms a conductive contact disposed on the first magnetic element; and a conductive second sheet metal body, in which a second magnetic element is disposed, and the second sheet metal body forms a conductive contact disposed on the second magnetic element. Preferably, the two magnetic elements are pressed into, bonded to, or otherwise securely connected to their respective sheet metal bodies. This allows for a relatively simple obtaining of contacts with good conductivity and good conductive connection to the corresponding contact surfaces of a printed circuit board. This provides an easily manufactured and reliable Wiegand sensor device.

[0023] Preferably, the first sensor coil terminal is conductively fixed to the first sheet metal body, for example, by solder joints or other types of material bonding conductive connections, and the second sensor coil terminal is conductively fixed to the second sheet metal body. This provides a Wiegand sensor device that is easy to manufacture and inexpensive.

[0024] Preferably, each of the two magnetically conductive elements is encased in the sensor housing, thereby securely fixing it to the sensor housing without requiring special fasteners or assembly steps. This provides an easy-to-manufacture and low-cost Wiegand sensor device. Attached Figure Description

[0025] An exemplary embodiment of the present invention will now be described with reference to the accompanying drawings. Wherein: Figure 1 schematically shows a top view of the contact side of the Wiegand sensor according to the present invention. Figure 2 schematically shows a top view of the front of the Wiegand sensor in Figure 1. Figure 3 schematically shows a cross-sectional view of the Wiegand sensor of Figures 1 and 2, wherein the Wiegand sensor is along... Figure 2 The section shown is cut along line III-III. Figure 4 is a view of another Wiegand sensor of the present invention, corresponding to the view in Figure 3. Figure 5 illustrates one arrangement of the Wiegand sensor of Figures 1 to 3 or the Wiegand sensor of Figure 4, wherein the Wiegand sensor is fixed to a printed circuit board in a first orientation and interacts with an excitation magnet disposed on the side of the printed circuit board opposite to the Wiegand sensor. Figure 6 shows another arrangement of the Wiegand sensor of Figures 1 to 3 or the Wiegand sensor of Figure 4, wherein the Wiegand sensor is fixed to the printed circuit board in a second orientation and interacts with an excitation magnet disposed on the same side of the printed circuit board as the Wiegand sensor and adjacent to the Wiegand sensor. Detailed Implementation

[0026] Figures 1 to 3 show a Wiegand sensor 100-1 according to the present invention, which includes a sensor housing 1 formed by injection molding.

[0027] The Wiegand sensor 100-1 further includes a Wiegand wire 2, a sensor coil 3, a first magnetic element 4, and a second magnetic element 5, each of which is fixed in the sensor housing 1.

[0028] The sensor coil 3 includes a winding segment 3.1 that radially surrounds the Wiegand wire 2, a first sensor coil terminal 3.2, and a second sensor coil terminal 3.3.

[0029] The first magnetic element 4 and the second magnetic element 5 are each made of soft magnetic material, particularly soft magnetic ferrite, and are each encapsulated by the sensor housing 1.

[0030] The first magnetic element 4 and the second magnetic element 5 are each completely covered with conductive coatings 4.1 and 5.1 on their outer surfaces.

[0031] The first magnetic element 4 and the second magnetic element 5 each include a main body portion 4.2 and 5.2, which extends perpendicularly to the Wiegand filament 2 and radially surrounds the Wiegand filament 2. The main body portion 4.2 of the first magnetic element 4 surrounds the first end 2.1 of the Wiegand filament 2, and the main body portion 5.2 of the second magnetic element 5 surrounds the second end 2.2 of the Wiegand filament 2.

[0032] The first magnetic element 4 and the second magnetic element 5 each further include a sensing part 4.3 and 5.3 that originates from the main body parts 4.2 and 5.2, points to the intermediate plane M that passes through the center of the Wiegand filament 2 and is perpendicular to the intermediate plane M of the Wiegand filament 2. The sensing parts 4.3 and 5.3 are arranged at an angle of 73° with respect to the intermediate plane M and extend from the sensor housing 1 on the sensing side E.

[0033] The sensing portion 4.3 of the first magnetic element 4 and the sensing portion 5.3 of the second magnetic element 5 each have an end face 4.3.1 or 5.3.1 perpendicular to the extension of the Wiegand wire at one end facing away from the main body portions 4.2 and 5.2, respectively. The distance A1 between the end face 4.3.1 of the first magnetic element 4 and the end face 5.3.1 of the second magnetic element 5 is less than 25% of the distance A2 between the main body portion 4.2 of the first magnetic element 4 and the main body portion 5.2 of the second magnetic element 5.

[0034] The first sensor coil terminal 3.2 is conductively fixed to the conductive coating 4.1 of the sensing part 4.3 of the first magnetic element 4 in the first recess 1.1 region of the sensor housing 1, and the second sensor coil terminal 3.3 is conductively fixed to the conductive coating 5.1 of the sensing part 5.3 of the second magnetic element 5 in the second recess 1.2 region of the sensor housing 1.

[0035] The sensing portion 4.3 of the first magnetic element 4 and the sensing portion 5.3 of the second magnetic element 5 each have a sensing-side contact surface 4.3.2 and 5.3.2 extending parallel to the Wiegand wire at one end facing away from the main body portions 4.2 and 5.2, outside the sensor housing 1, wherein the sensing-side contact surface 4.3.2 of the first magnetic element 4 is arranged parallel to the sensing-side contact surface 5.3.2 of the second magnetic element 5.

[0036] Conductive contacts 4.4 and 5.4 are formed on the sensing side contact surface 4.3.2 of the first magnetic element 4 and the sensing side contact surface 5.3.2 of the second magnetic element 5 through the conductive coatings 4.1 and 5.1 of the corresponding magnetic elements 4 and 5. The contact 4.4 formed by the conductive coating 4.1 of the first magnetic element 4 and arranged on the sensing side contact surface 4.3.2 of the first magnetic element 4 is electrically connected to the first sensor coil terminal 3.2. The contact 5.4 formed by the conductive coating 5.1 of the second magnetic element 5 and arranged on the sensing side contact surface 5.3.2 of the second magnetic element 5 is electrically connected to the second sensor coil terminal 3.3.

[0037] The first magnetic element 4 and the second magnetic element 5 each further include a contact portion 4.5 and 5.5 that are connected to the main body portions 4.2 and 5.2 and extend perpendicularly to the Wiegand wire 2. The contact portion extends from the sensor housing 1 on the contact side K.

[0038] The contact portion 4.5 of the first magnetic element 4 and the contact portion 5.5 of the second magnetic element 5 each have a contact side contact surface 4.5.1 and 5.5.1 extending parallel to the Wiegand wire at one end facing away from the main body portions 4.2 and 5.2, outside the sensor housing 1. The contact side contact surface 4.5.1 of the first magnetic element 4 is arranged parallel to the contact side contact surface 5.5.1 of the second magnetic element 5, and the contact side contact surfaces 4.5.1 and 5.5.1 of the two magnetic elements 4 and 5 are arranged perpendicular to the sensing side contact surfaces 4.3.2 and 5.3.2 of the two magnetic elements 4 and 5, respectively.

[0039] Conductive contacts 4.6 and 5.6 are formed on the contact surface 4.5.1 of the first magnetic element 4 and the contact surface 5.5.1 of the second magnetic element 5 through the conductive coatings 4.1 and 5.1 of the corresponding magnetic elements 4 and 5. The contact 4.6 formed by the conductive coating 4.1 of the first magnetic element 4 and arranged on the contact surface 4.5.1 of the first magnetic element 4 is electrically connected to the first sensor coil terminal 3.2, and the contact 5.6 formed by the conductive coating 5.1 of the second magnetic element 5 and arranged on the contact surface 5.5.1 of the second magnetic element 5 is electrically connected to the second sensor coil terminal 3.3.

[0040] Figure 4 shows another Wiegand sensor 100-2 according to the present invention, with the corresponding reference numerals in Figures 1 to 3 used for features that are the same as or similar to those of the aforementioned Wiegand sensor 100-1.

[0041] The difference between Wiegand sensor 100-2 and Wiegand sensor 100-1 is that the first magnetic element 4 and the second magnetic element 5 are not coated, but are provided with a conductive first sheet metal body 6, in which the first magnetic element 4 is disposed; and a conductive second sheet metal body 7, in which the second magnetic element 5 is disposed.

[0042] Therefore, in the Wiegand sensor 100-2, the first sheet metal body 6 forms a conductive contact 4.4 disposed on the sensing side contact surface 4.3.2 of the first magnetic element 4 and a conductive contact 4.6 disposed on the contact side contact surface 4.5.1 of the first magnetic element 4; the second sheet metal body 7 forms a conductive contact 5.4 disposed on the sensing side contact surface 5.3.2 of the second magnetic element 5 and a conductive contact 5.6 disposed on the contact side contact surface 5.5.1 of the second magnetic element 5.

[0043] Furthermore, in the Wiegand sensor 100-2, the first sensor coil terminal 3.2 is conductively fixed to the first sheet metal body 6, and the second sensor coil terminal 3.3 is conductively fixed to the second sheet metal body 7.

[0044] A further difference between Wiegand sensor 100-2 and Wiegand sensor 100-1 is that the winding segment 3.1 has an outer diameter D1 in the intermediate plane M region, which is larger than the outer diameter D2 of the axial end region of the winding segment 3.1.

[0045] Figure 5 shows an arrangement of Wiegand sensor 100-1 or Wiegand sensor 100-2 on printed circuit board 101-1, wherein Wiegand sensor 100-1 / 100-2 interacts with an excitation magnet 103-1 mounted on the side of printed circuit board 101-1 opposite to Wiegand sensor 100-1 / 100-2 and mounted on the shaft to be monitored 102-1.

[0046] Here, the Wiegand sensor 100-1 / 100-2 is fixed to the printed circuit board 101-1 in a first orientation. The Wiegand sensor 100-1 / 100-2 is electrically fixed to the coil contact surface (not shown in the figure) of the printed circuit board 101-1, which is formed accordingly for making electrical contact with the sensor coil 3, through contacts 4.4 and 5.4 arranged on the sensing side contact surfaces 4.3.2 and 5.3.2, such that the sensing side E of the Wiegand sensor 100-1 / 100-2 (the sensing parts 4.3 and 5.3 of the two magnetic elements 4 and 5 are arranged on this side) faces the excitation magnet 103-1.

[0047] Figure 6 shows another arrangement of Wiegand sensor 100-1 or Wiegand sensor 100-2 on printed circuit board 101-2, wherein Wiegand sensor 100-1 / 100-2 interacts with an excitation magnet 103-2 mounted on the shaft to be monitored 102-2, which is located on the same side of printed circuit board 101-2 as Wiegand sensor 100-1 / 100-2 and adjacent to Wiegand sensor.

[0048] Here, the Wiegand sensor 100-1 / 100-2 is fixed to the printed circuit board 101-2 in a second orientation. The Wiegand sensor 100-1 / 100-2 is electrically fixed to the coil contact surface (not shown in the figure) of the printed circuit board 101-2, which is formed accordingly for making electrical contact with the sensor coil 3, through the contacts 4.6 and 5.6 arranged on the contact surfaces 4.5.1 and 5.5.1 on the contact side. This makes the sensing side E of the Wiegand sensor 100-1 / 100-2 (the sensing parts 4.3 and 5.3 of the two magnetic elements 4 and 5 are arranged on this side) also face the excitation magnet 103-2.

[0049] List of labels 100-1; 100 2 Wiegand sensors 1. Sensor housing 1.1 First notch 1.2 Second notch 2 Wiegens 2.1 First end 2.2 Second End 3. Sensor coil 3.1 Winding Section 3.2 First sensor coil terminal 3.3 Second sensor coil terminal 4 First magnetic element 4.1 Conductive coating 4.2 Main Body 4.3 Sensing Unit 4.3.1 End face 4.3.2 Sensing Side Contact Surface 4.4 Conductive Contacts 4.5 Contact part 4.5.1 Contact surface on the contact side 4.6 Conductive Contacts 5 Second magnetic element 5.1 Conductive coating 5.2 Main Body 5.3 Sensing Unit 5.3.1 End face 5.3.2 Sensing Side Contact Surface 5.4 Conductive Contacts 5.5 Contact part 5.5.1 Contact surface on the contact side 5.6 Conductive Contacts 6 First sheet metal body 7 Second sheet metal body 101-1; 101-2 Printed Circuit Boards Shafts 102-1 and 102-2 103-1; 103-2 Excitation Magnet A1 Distance A2 Distance D1 outer diameter D2 outer diameter E Sensing Side K contact side M intermediate plane Claims (as amended under Article 19 of the Treaty) 1. Wiegand sensors (100-1; 100-2), including: Sensor housing (1) Wiegens (2). A sensor coil (3) surrounds the Wiegand wire (2), the sensor coil (3) including a first sensor coil terminal (3.2) and a second sensor coil terminal (3.3). The first magnetic element (4) disposed at the first end (2.1) of the Wiegand wire (2), and The second magnetic element (5) is disposed on the second end (2.2) of the Wiegand wire (2) opposite to the first end (2.1). Each of the two magnetically conductive elements (4, 5) includes a sensing part (4.3, 5.3) pointing through the center of the Wiegand filament (2) and perpendicular to the mid-plane (M) of the Wiegand filament (2). The sensing part extends from the sensor housing (1) on the sensing side (E) and includes a sensing-side contact surface (4.3.2, 5.3.2) extending parallel to the Wiegand filament (2) outside the sensor housing (1). Each of the two magnetically conductive elements (4, 5) includes a contact portion (4.5, 5.5) that extends from the sensor housing (1) on the contact side (K) and includes a contact-side contact surface (4.5.1, 5.5.1) extending parallel to the Wiegand wire (2) on the outside of the sensor housing (1). A conductive contact (4.4, 4.6) is arranged on each of the sensing-side contact surface (4.3.2) and the contact-side contact surface (4.5.1) of the first magnetically conductive element (4). The contact (4.4, 4.6) is electrically connected to the first sensor coil terminal (3.2). A conductive contact (5.4, 5.6) is arranged on the sensing side contact surface (5.3.2) and the contact side contact surface (5.5.1) of the second magnetic conductive element (5), and the conductive contact (5.4, 5.6) is electrically connected to the second sensor coil terminal (3.3). 2. The Wiegand sensor (100-1; 100-2) according to claim 1, characterized in that the contact surfaces (4.5.1, 5.5.1) on the contact side of the two magnetic elements (4, 5) are arranged perpendicular to the contact surfaces (4.3.2, 5.3.2) on the sensing side of the two magnetic elements (4, 5). 3. The Wiegand sensor (100-1; 100-2) according to claim 1 or 2, characterized in that the sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) are each arranged at an angle between 65° and 85° relative to the intermediate plane (M), preferably at an angle between 70° and 80°. 4. The Wiegand sensor (100-1; 100-2) according to claim 3, characterized in that the winding segment (3.1) of the sensor coil (3) has an outer diameter (D1) in the intermediate plane (M) region, the outer diameter being larger than the outer diameter (D2) of the axial end region of the winding segment (3.1). 5. The Wiegand sensor (100-1; 100-2) according to any one of the preceding claims, characterized in that the distance (A1) between the sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) is at most 50% of the distance (A2) between the main portions (4.2, 5.2) of the two magnetic elements (4, 5) surrounding the Wiegand wire (2), preferably at most 25%. 6. The Wiegand sensor (100-1) according to any one of the preceding claims, characterized in that each of the two magnetic elements (4, 5) has a conductive coating (4.1, 5.1), the coating forming the conductive contacts (4.4, 4.6, 5.4, 5.6) arranged on the respective magnetic elements (4, 5). 7. The Wiegand sensor (100-1) according to claim 6, characterized in that the first sensor coil terminal (3.2) is electrically fixed to the conductive coating (4.1) of the first magnetic element (4), and the second sensor coil terminal (3.3) is electrically fixed to the conductive coating (5.1) of the second magnetic element (5). 8. The Wiegand sensor (100-2) according to any one of claims 1 to 5, characterized in that it further comprises: A first conductive sheet metal body (6), a first magnetically conductive element (4) disposed in the first sheet metal body (6), and the first sheet metal body forming the conductive contacts (4.4, 4.6) arranged on the first magnetically conductive element (4), and A conductive second sheet metal body (7) is provided in the second sheet metal body (7), and the second sheet metal body forms the conductive contact (5.4, 5.6) arranged on the second magnetic element (5). 9. The Wiegand sensor (100-2) according to claim 8, characterized in that the first sensor coil terminal (3.2) is electrically fixed to the first sheet metal body (6), and the second sensor coil terminal (3.3) is electrically fixed to the second sheet metal body (7). 10. The Wiegand sensor (100-1; 100-2) according to any one of the preceding claims, characterized in that the two magnetically conductive elements (4, 5) are each encased in the sensor housing (1). 11. A Wiegand sensor device, comprising: Shaft (102-1; 102-2) Excitation magnets (103-1; 103-2) are mounted on the shafts (102-1; 102-2), and Wiegand sensors (100-1; 100-2) include: Wiegens (2). The sensor coil (3) surrounds the Wiegand wire (2). The first magnetic element (4) disposed at the first end (2.1) of the Wiegand wire (2), and The second magnetic element (5) is disposed on the second end (2.2) of the Wiegand wire (2) opposite to the first end (2.1). Each of the two magnetically conductive elements (4, 5) includes a sensing element (4.3, 5.3), which is disposed between the Wiegand wire (2) and the excitation magnet (103-1; 103-2), and points to a mid-plane (M) passing through the center of the Wiegand wire (2) and perpendicular to the mid-plane (2). The sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) are each configured to extend outward from the Wiegand wire (2). 12. The Wiegand sensor device according to claim 11, characterized in that the sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) are each arranged at an angle between 65° and 85° relative to the intermediate plane (M), preferably at an angle between 70° and 80°. 13. The Wiegand sensor device according to claim 11 or 12, wherein the Wiegand sensor (100-1; 100-2) is disposed radially adjacent to the excitation magnet (103-1; 103-2). 14. The Wiegand sensor device according to any one of claims 11 to 13, characterized in that the winding segment (3.1) of the sensor coil (3) has an outer diameter (D1) in the intermediate plane (M) region, the outer diameter being larger than the outer diameter (D2) of the axial end region of the winding segment (3.1). 15. The Wiegand sensor device according to any one of claims 11 to 14, characterized in that the distance (A1) between the sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) is at most 50% of the distance (A2) between the main portions (4.2, 5.2) of the two magnetic elements (4, 5) surrounding the Wiegand wire (2), preferably at most 25%. 16. The Wiegand sensor device according to any one of claims 11 to 15, characterized in that the Wiegand sensor (100-1; 100-2) comprises a sensor housing (1), the Wiegand wire (2), the sensor coil (3) and the two magnetic elements (4, 5) are fixed to the sensor housing (1), and the sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) extend from the sensor housing (1) on the sensing side (E) of the sensor housing (1) toward the excitation magnet (103-1; 103-2). 17. The Wiegand sensor device according to claim 16, wherein the two magnetic elements (4, 5) are each encased in the sensor housing (1). 18. The Wiegand sensor device according to any one of claims 11 to 17, characterized in that a conductive contact (4.6, 5.6) is arranged on each of the two magnetic elements (4, 5), and the conductive contact is electrically connected to the sensor coil (3). 19. The Wiegand sensor device according to claim 16 or 17 and claim 18, characterized in that each of the two magnetic elements (4, 5) includes a contact portion (4.5, 5.5) extending from the sensor housing (1), and the conductive contacts (4.6, 5.6) are each disposed on the contact portion (4.5, 5.5) of the corresponding magnetic element (4, 5) outside the sensor housing (1). 20. The Wiegand sensor device according to claim 18 or 19, characterized in that each of the two magnetic elements (4, 5) has a conductive coating (4.1, 5.1) forming the conductive contact (4.6, 5.6) arranged on the respective magnetic element (4, 5). 21. The Wiegand sensor device according to claim 20, wherein the first sensor coil terminal (3.2) of the sensor coil (3) is conductively fixed to the conductive coating (4.1) of the first magnetic element (4), and the second sensor coil terminal (3.3) of the sensor coil (3) is conductively fixed to the conductive coating (5.1) of the second magnetic element (5). 22. The Wiegand sensor device according to claim 18 or 19, characterized in that the Wiegand sensor (100-1; 100-2) comprises a conductive first sheet metal body (6), a first magnetic element (4) disposed in the first sheet metal body (6), and the first sheet metal body (6) forming the conductive contact (4.6) disposed on the first magnetic element (4); and a conductive second sheet metal body (7), a second magnetic element (5) disposed in the second sheet metal body (7), and the second sheet metal body (7) forming the conductive contact (5.6) disposed on the second magnetic element (5). 23. The Wiegand sensor device according to claim 22, wherein the first sensor coil terminal (3.2) of the sensor coil (3) is electrically fixed to the first sheet metal body (6), and the second sensor coil terminal (3.3) of the sensor coil (3) is electrically fixed to the second sheet metal body (7).

Claims

1. Wiegand sensors (100-1; 101-2), including: Sensor housing (1) Wiegens (2). A sensor coil (3) surrounds the Wiegand wire (2), the sensor coil (3) including a first sensor coil terminal (3.2) and a second sensor coil terminal (3.3). The first magnetic element (4) disposed at the first end (2.1) of the Wiegand wire (2), and The second magnetic element (5) is disposed on the second end (2.2) of the Wiegand wire (2) opposite to the first end (2.1). Each of the two magnetically conductive elements (4, 5) includes a sensing part (4.3, 5.3) pointing through the center of the Wiegand filament (2) and perpendicular to the mid-plane (M) of the Wiegand filament (2). The sensing part extends from the sensor housing (1) on the sensing side (E) and includes a sensing-side contact surface (4.3.2, 5.3.2) extending parallel to the Wiegand filament (2) outside the sensor housing (1). Each of the two magnetically conductive elements (4, 5) includes a contact portion (4.5, 5.5) that extends from the sensor housing (1) on the contact side (K) and includes a contact-side contact surface (4.5.1, 5.5.1) extending parallel to the Wiegand wire (2) on the outside of the sensor housing (1). A conductive contact (4.4, 4.6) is arranged on each of the sensing-side contact surface (4.3.2) and the contact-side contact surface (4.5.1) of the first magnetically conductive element (4). The contact (4.4, 4.6) is electrically connected to the first sensor coil terminal (3.2). A conductive contact (5.4, 5.6) is arranged on the sensing side contact surface (5.3.2) and the contact side contact surface (5.5.1) of the second magnetic conductive element (5), and the conductive contact (5.4, 5.6) is electrically connected to the second sensor coil terminal (3.3).

2. The Wiegand sensor (100-1; 101-2) according to claim 1, characterized in that, The contact surfaces (4.5.1, 5.5.1) on the contact side of the two magnetic elements (4, 5) are arranged perpendicular to the contact surfaces (4.3.2, 5.3.2) on the sensing side of the two magnetic elements (4, 5).

3. The Wiegand sensor (100-1; 101-2) according to claim 1 or 2, characterized in that, The sensing portions (4.3.2, 5.3.2) of the two magnetically conductive elements (4, 5) are each arranged at an angle between 65° and 85° relative to the intermediate plane (M), preferably at an angle between 70° and 80°.

4. The Wiegand sensor (100-1; 101-2) according to claim 3, characterized in that, The winding segment (3.1) of the sensor coil (3) has an outer diameter (D1) in the intermediate plane (M) region, which is larger than the outer diameter (D2) of the axial end region of the winding segment (3.1).

5. The Wiegand sensor (100-1; 101-2) according to any one of the preceding claims, characterized in that, The distance (A1) between the sensing portions (4.3, 5.3) of the two magnetic elements (4, 5) is at most 50% of the distance (A2) between the main portions (4.2, 5.2) of the two magnetic elements (4, 5) surrounding the Wiegand wire (2), preferably at most 25%.

6. The Wiegand sensor (100-1) according to any one of the preceding claims, characterized in that, Each of the two magnetic elements (4, 5) has a conductive coating (4.1, 5.1), which forms the conductive contacts (4.4, 4.6, 5.4, 5.6) arranged on the respective magnetic elements (4, 5).

7. The Wiegand sensor (100-1) according to claim 6, characterized in that, The first sensor coil terminal (3.2) is electrically fixed to the conductive coating (4.1) of the first magnetic element (4), and the second sensor coil terminal (3.3) is electrically fixed to the conductive coating (5.1) of the second magnetic element (5).

8. The Wiegand sensor (100-2) according to any one of claims 1 to 5, characterized in that, Also includes: A first conductive sheet metal body (6), a first magnetically conductive element (4) disposed in the first sheet metal body (6), and the first sheet metal body forming the conductive contacts (4.4, 4.6) arranged on the first magnetically conductive element (4), and A conductive second sheet metal body (7) is provided in the second sheet metal body (7), and the second sheet metal body forms the conductive contact (5.4, 5.6) arranged on the second magnetic element (5).

9. The Wiegand sensor (100-2) according to claim 8, characterized in that, The first sensor coil terminal (3.2) is electrically fixed to the first sheet metal body (6), and the second sensor coil terminal (3.3) is electrically fixed to the second sheet metal body (7).

10. The Wiegand sensor (100-1; 100-2) according to any one of the preceding claims, characterized in that, The two magnetically conductive elements (4, 5) are each encased in the sensor housing (1).

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