MAGNETIC SENSOR AND CLUTCH ASSEMBLY WITH SAME

Abstract

In a coordinate system having an X-direction, a Y-direction, and a Z-direction that are perpendicular to each other, a magnetic sensor (1) detects the position of an object (4) to be detected, which object comprises a soft magnetic material, in the X-direction. The magnetic sensor (1) comprises first and second magnets (2A and 2B) positioned along the X-direction and having opposing surfaces (21A and 21B) that face each other and have different polarities, as well as a magnetic sensor element (3) positioned between the first and second magnets (2A and 2B) when viewed from the Y-direction. When viewed from the Y-direction, the object (4) to be detected is movable between the first and second magnets (2A and 2B) in the X-direction.

Description

Technical area

[0001] The present disclosure relates to a magnetic sensor and a clutch assembly having the same. State of the art

[0002] Magnetic sensors that detect the position of an object to be detected moving in one direction are known. JP 6,464,907 B describes a magnetic sensor with two magnets whose opposing surfaces have the same polarity and a detection element located between the two magnets. An object to be detected can move between the two magnets, and the magnetic sensor detects the position of the object to be detected based on the direction of the magnetic field at the position of the detection element. Summary of the invention

[0003] The magnetic sensor described in JP 6,464,907 B has good output linearity, but the change in direction of the magnetic field relative to the change in position of the object to be detected is small, and the sensitivity cannot be easily increased. An object of the present disclosure is to provide a magnetic sensor with higher sensitivity. Means to solve the problem

[0004] In a coordinate system having an X-direction, a Y-direction, and a Z-direction that are perpendicular to each other, the magnetic sensor of the present disclosure detects the position of an object to be detected, which comprises a soft magnetic material, in the X-direction. The magnetic sensor includes two magnets positioned along the X-direction and having opposing surfaces facing each other and having different polarities, as well as a magnetic sensor element positioned between the two magnets when viewed from the Y-direction. When viewed from the Y-direction, the object to be detected is movable between the two magnets in the X-direction. Effect of the invention

[0005] According to the present disclosure, a magnetic sensor with higher sensitivity can be provided. Brief description of the drawings Fig. 1A to Fig. 1D are conceptual diagrams of a magnetic sensor according to a first embodiment. Fig. 2A to Fig. 2C are schematic diagrams illustrating the operating principle of a magnetic sensor. Fig. 3A and Fig. 3B are diagrams showing the relationship between the position of an object to be detected and the magnetic field strength By in a comparative example. Fig. Figure 4 is a diagram showing the relationship between the position of an object to be detected and the magnetic field strength. Fig. 5A and Fig. 5B are schematic representations of a calculation model used in a simulation. Fig. Figure 6 is a diagram showing the relationship between the position of an object to be detected and the magnetic field strength By with dimension G as a parameter. Fig. 7A to Fig. 7C are conceptual diagrams of a magnetic sensor according to a second embodiment. Fig. 8A to Fig. 8D are conceptual diagrams of a magnetic sensor according to a third embodiment and a modification thereof. Fig. 9 is an exploded perspective view of a magnetic sensor according to the third embodiment. Fig. 10 is a conceptual diagram of a clutch assembly according to a fourth embodiment. Description of the embodiments

[0006] Embodiments of the magnetic sensor and the coupling assembly of the present disclosure are described below with reference to the drawings. In the following description and the drawings, an X-direction (X-axis), a Y-direction (Y-axis), and a Z-direction (Z-axis) are defined to be perpendicular to each other in a three-dimensional perpendicular coordinate system. The X-direction corresponds to the movement direction of the object to be detected, and the Y-direction corresponds to the magnetic field detection direction of the magnetic sensor element. First embodiment

[0007] Fig. 1A to Fig. 1D are conceptual diagrams of magnetic sensor 1 according to the first embodiment of the present disclosure. Fig. 1A is a front view of the two magnets (hereinafter referred to as first magnet 2A and second magnet 2B) of magnetic sensor 1 and magnetic sensor element 3 as seen from the Z direction of the object 4 to be detected. Fig. 1B is a plan view of first and second magnets 2A and 2B, magnetic sensor element 3 and object to be detected 4 seen from the Y direction. Fig. 1C is a perspective view of first and second magnets 2A and 2B, IC package 5, and object to be detected 4. Fig. 1D is a front view showing the installation state of magnetic sensor 1.

[0008] The magnetic sensor 1 detects the position of the object 4 to be detected in the X direction. The magnetic sensor 1 includes first and second magnets 2A and 2B positioned along the X direction (arranged in the X direction), and a magnetic sensor element 3 positioned between the first magnet 2A and the second magnet 2B when viewed from the Y direction. The first and second magnets 2A and 2B are rectangular parallelepipeds with the same dimensions, and the center lines of the first magnet 2A and the second magnet 2B in the X direction are aligned with each other. The shape of the first and second magnets 2A and 2B is not limited to a rectangular parallelepiped, the dimensions do not need to be the same, and the center lines in the X direction of the first and second magnets 2A and 2B do not need to coincide.The first and second magnets 2A and 2B have opposing surfaces 21A and 21B facing each other in the X direction, and back surfaces 22A and 22B facing the opposing surfaces 21A and 21B, respectively. The polarities of the opposing surface 21A of the first magnet 2A and the opposing surface 21B of the second magnet 2B are different from each other. In this embodiment, the opposing surface 21A of the first magnet 2A is a north pole, and the opposing surface 21B of the second magnet 2B is a south pole. Although not shown in the figure, the opposing surface 21A of the first magnet 2A may be a south pole, and the opposing surface 21B of the second magnet 2B may be a north pole. The opposing surfaces 21A and 21B and the rear surfaces 22A and 22B are parallel to the YZ plane, but may also be inclined with respect to the YZ plane.

[0009] The magnetic sensor element 3 is integrated into the IC package 5. The magnetic sensor element 3 is a Hall element, but can also be a magnetoresistance effect element such as a tunnel magnetoresistance effect (TMR) element. The magnetic sensor element 3 detects a magnetic field in the Y direction. As described below, in this embodiment, it is not necessary to detect the magnetic field in the X or Z direction, nor is it necessary to detect the angle of the magnetic field in the XY plane. Therefore, the structure of the magnetic sensor element 3 can be simplified and the cost reduced. It is also possible to use an IC package that can detect magnetic fields in both directions. In this case, only the output of the magnetic sensor element that detects the magnetic field in the X direction can be used.

[0010] Viewed from the Y direction, the object 4 to be detected is movable between the first magnet 2A and the second magnet 2B in the X direction. The moving range 6 (stroke) of the object 4 to be detected is not particularly limited, but the magnetic sensor 1 of this embodiment can be suitably used for applications in which the moving range 6 in the X direction is a short stroke of, for example, 10 mm or less. The object 4 to be detected is a disk that rotates around the X axis, but the shape of the object 4 to be detected is not particularly limited and can be either a plate shape or a bar shape. The object 4 to be detected may be formed of a soft magnetic material, but it is sufficient that the object 4 to be detected at least partially contains a soft magnetic material.

[0011] As in Fig. As shown in Figure 1D, the magnetic sensor 1 includes first and second magnets 2A and 2B, an IC package 5, and a resin case 7 that seals these elements. The case 7 includes a main body 8 that encloses the first and second magnets 2A and 2B and the IC package 5, and a mounting portion 9 that protrudes from the main body 8. The mounting portion 9 has mounting holes 10, and the magnetic sensor 1 is fixed to the base plate 12 with screws 11 inserted through the mounting holes 10. The base plate 12 is fixed to a mechanical device (not shown). The main body 8 is provided with a terminal portion 13 for input and output of signals and power supply.

[0012] Fig. 2A to Fig. 2C are schematic diagrams illustrating the operating principle of the magnetic sensor 1. In Fig. 2A, the object 4 to be detected is located at a position that is equidistant in the X direction from the first magnet 2A and the second magnet 2B, in Fig. 2B, the object 4 to be detected has moved to the left, and in Fig. 2C, the object 4 to be detected has moved to the right. The dashed arrows in the figure conceptually represent magnetic flux. If the object 4 to be detected is in the center, as in Fig. 2A, the magnetic flux flowing from the north pole of the first magnet 2A to the south pole of the second magnet 2B is symmetrical with respect to the Y-axis passing through the magnetic sensor element 3, and the magnetic field strength By in the Y direction detected by the magnetic sensor element 3 is therefore zero.

[0013] If the object 4 to be detected is on the left side, as in Fig. As shown in Figure 2B, the magnetic flux flowing from the north pole of the first magnet 2A to the south pole of the second magnet 2B is easily absorbed by the object 4 to be detected, with the result that the magnetic flux leaving the upper part of the first magnet 2A in the Y direction is mainly directed to the second magnet 2B. As a result, the magnetic flux is generally shifted downward in the Y direction, and at the position of the magnetic sensor element 3, the magnetic flux is directed downward in the Y direction. Therefore, the magnetic sensor element 3 detects the magnetic field strength By in the downward Y direction. When the object 4 to be detected is located on the right side, as shown in Figure 2B, Fig. As shown in Fig. 2C, the magnetic flux flowing from the object 4 to be detected toward the south pole of the second magnet 2B increases, and the magnetic flux flowing from the north pole of the first magnet 2A toward the south pole of the second magnet 2B is more likely to be absorbed by the upper part of the second magnet 2B in the Y direction. As a result, the magnetic flux is generally shifted upward in the Y direction, and at the position of the magnetic sensor element 3, the magnetic flux is directed upward in the Y direction. Therefore, the magnetic sensor element 3 detects the magnetic field strength By in the upward Y direction. Based on the principle described above, the position of the object 4 to be detected in the X direction can be detected by measuring the magnetic flux strength By in the Y direction.

[0014] As a comparison example, the relationship between the position of the object 4 to be detected in the X direction and the magnetic field strength By at the position of the magnetic sensor element 3 in the Y direction was calculated for a magnetic sensor in which the opposing surfaces 21A and 21B of the first magnet 2A and the second magnet 2B have the same polarity. The results are shown in Fig. 3A. The magnetic field strength By is lowest at X = 0 mm and increases on both sides of X = 0 mm. Since two positions in the X direction correspond to one magnetic field strength By, the position of the object 4 to be detected in the X direction is difficult to detect. Fig. Figure 3B shows the relationship between the position of the object 4 to be detected in the X direction and the magnetic field angle Bθ at the position of the magnetic sensor element 3 in the comparative example. The magnetic field angle Bθ can be calculated from the tangent of the magnetic field strength Bx in the X direction and the magnetic field strength By in the Y direction. Since the position in the X direction and the magnetic field angle Bθ have a one-to-one correspondence, position detection is possible. However, the amount of change in the magnetic field angle Bθ is small, especially at positions away from X = 0 mm, and the position of the object 4 to be detected in the X direction cannot be detected with sufficient accuracy.Although not shown in the figure, since the magnetic field strength Bx in the X direction does not change significantly depending on the position of the object 4 to be detected, the magnetic field strength Bx in the X direction is not accurate enough to serve as an indication of the position of the object 4 to be detected.

[0015] For the reasons described above, in this embodiment, the magnetic sensor element 3 detects the magnetic field strength in the Y direction, and the magnetic sensor 1 uses only the magnetic field strength in the Y direction detected by the magnetic sensor element 3 as the magnetic field strength to output a signal indicating the position in the X direction. Fig. 4 shows the relationship between the position of the object 4 to be detected in the X direction and the magnetic field strength By at the position of the magnetic sensor element 3 in the Y direction. Fig. Figure 4 also shows diagrams of the magnetic sensor 1 according to the second and third embodiments, which will be described later. The magnetic field strength By has high linearity, and a large magnetic field strength is achieved.

[0016] Next, the positional relationship in the Y direction between the first and second magnets 2A and 2B and the magnetic sensor element 3 will be described. Fig. Figure 5A shows an overview of the calculation model used in a simulation. The position of the magnetic sensor element 3 and the distance in the Y direction between the magnetic sensor element 3 and the object 4 to be detected are fixed. Using the dimension G in the Y direction between the centers in the Y direction of the first and second magnets 2A and 2B and the magnetic sensor element 3 as a parameter, the relationship between the position of the object 4 to be detected in the X direction and the magnetic field strength By at the position of the magnetic sensor element 3 was calculated. Fig. Figure 5B shows the positional relationship between the first magnet 2A, the magnetic sensor element 3, and the object to be detected 4 corresponding to G = 0 mm to 7 mm. The first magnet 2A, corresponding to G = 0 mm to 7 mm, is shown arranged in the X direction for simplicity, but its position in the X direction is the same. Fig. 5A corresponds to G= 3 mm. The calculation results are in Fig. 6. In all cases, a magnetic field strength By with sufficient magnitude and linearity was achieved, and a particularly large magnetic field strength By was achieved when G = 1 mm to 7 mm, and preferably when G = 2 mm to 5 mm.

[0017] Referring to Fig. 5B, at least a portion of each of the first and second magnets 2A and 2B preferably overlaps with the object 4 to be detected in the Y direction (G = 1 mm to 7 mm). The relationship between the magnetic sensor element 3 and the first and second magnets 2A and 2B in the Y direction is not particularly limited, and the magnetic sensor element 3 and the first and second magnets 2A and 2B may overlap in the Y direction (G = 0 mm to 2 mm), or the first and second magnets 2A and 2B may be separated from the magnetic sensor element 3 in the Y direction (G = 3 mm to 7 mm). The first and second magnets 2A and 2B may be shifted from the object 4 to be detected toward the magnetic sensor element 3 in the Y direction (G = 0 mm to 5 mm). Second embodiment

[0018] Fig. 7A to Fig. 7C are conceptual diagrams of the magnetic sensor 1 according to the second embodiment of the present disclosure. Fig. 7A is a front view of first and second magnets 2A and 2B, magnetic sensor element 3 and object to be detected 4 of the magnetic sensor 1 as seen from the Z direction. Fig. 7B is a plan view of first and second magnets 2A and 2B, magnetic sensor element 3 and object to be detected 4 seen from the Y direction. Fig. 7C is a perspective view of the first and second magnets 2A and 2B, the IC package 5, and the object to be detected 4. The magnetic sensor 1 of this embodiment is configured similarly to the magnetic sensor 1 of the first embodiment, except that it includes a first yoke 14 fixed to the first and second magnets 2A and 2B. Explanations of configurations and effects similar to those of the first embodiment are omitted.

[0019] The first yoke 14 is formed of a soft magnetic material. The first yoke 14 includes a connecting portion 16 extending in the X direction and connecting two side portions 15, two side portions 15 extending in the Y direction and fixed to the back surfaces 22A and 22B of the first and second magnets 2A and 2B, which are opposite to the opposing surfaces 21A and 21B, respectively, and a magnetic sensor element 3 disposed in the Y direction between the connecting portion 16 and the moving area 6 of the object 4 to be detected. The connecting portion 16 has no through hole. Although not shown in the figure, the state of the magnetic flux exiting the opposing surface 21A of the first magnet 2A and the magnetic flux entering the opposing surface 21B of the second magnet 2B is similar to that of the first embodiment.Moreover, similarly to the comparative example of the first embodiment, the relationship between the position of the object 4 to be detected in the X direction, the magnetic field strength By, and the magnetic field angle Bθ was calculated for a magnetic sensor in which the opposing surfaces 21A and 21B of the first magnet 2A and the second magnet 2B have the same polarity, respectively, and a similar trend to that in FIG. 1 was obtained. Fig. 3 shown.

[0020] Fig. 4 shows the relationship between the position of the object 4 to be detected in the X direction and the magnetic field strength By at the position of the magnetic sensor element 3 in this embodiment. The first yoke 14 amplifies the magnetic field formed by the first and second magnets 2A and 2B, with the result that the magnetic flux exiting the opposing surface 21A of the first magnet 2A and the magnetic flux entering the opposing surface 21B of the second magnet 2B increases, which increases the magnetic flux strength By compared to the first embodiment. Furthermore, since the first and second magnets 2A and 2B are integrated into the first yoke 14, the positioning accuracy of the first and second magnets 2A and 2B is improved. Third embodiment

[0021] Fig. 8A to Fig. 8D are conceptual diagrams of the magnetic sensor 1 according to the third embodiment of the present disclosure. Fig. 8A is a front view of first and second magnets 2A and 2B, magnetic sensor element 3 and object to be detected 4 of the magnetic sensor 1 as seen from the Z direction. Fig. 8B is a plan view of first and second magnets 2A and 2B, magnetic sensor element 3 and object to be detected 4 seen from the Y direction. Fig. 8C is a perspective view of first and second magnets 2A and 2B, IC package 5, and object to be detected 4. Fig. 9 is an exploded perspective view of the magnetic sensor 1. The magnetic sensor 1 of this embodiment is configured in the same manner as the magnetic sensor 1 of the second embodiment, except that the connecting part 16 of the first yoke 14 has a through-hole 17 extending in the Y direction, and a second yoke 18 is provided, a part of which is located in the through-hole 17. Explanations of configurations and effects similar to those of the first and second embodiments have been omitted.

[0022] The second yoke 18 is formed of a soft magnetic material. The second yoke 18 is a rectangular parallelepiped element, but may also be a circular cylinder or a prism that is not a rectangular parallelepiped. The second yoke 18 has a center line 18C extending in the Y direction, and the center line 18C preferably passes through the magnetic sensor element 3. Although the second yoke 18 ends at the center of the through-hole 17 in the Y direction, the second yoke 18 may also pass through the through-hole 17. The magnetic sensor element 3 is partially inserted into the through-hole 17 but may be located between the first yoke 14 and the moving area 6 of the object 4 to be detected. Because the second yoke 18 is spaced apart from the first yoke 14, the manufacturing process is simplified, as described below.In addition, the presence of the through hole 17 in the connecting part 16 of the first yoke 14 increases the degree of freedom of the installation position of the magnetic sensor element 3 in the Y direction. Modification of the third embodiment

[0023] Fig. 8D shows a front view of the first and second magnets 2A and 2B, the magnetic sensor element 3, and the object to be detected 4 of the magnetic sensor 1 as viewed from the Z direction according to a modification of the third embodiment of the present disclosure. In this modification, the first yoke 14 of the third embodiment is omitted, and only the second yoke 18 is provided as the yoke. As in the third embodiment, the second yoke 18 has a center line 18C extending in the Y direction, and the center line 18C preferably passes through the magnetic sensor element 3. In this modification, the magnetic flux intensity By is increased compared to the first embodiment due to the magnetic flux collection effect of the second yoke 18.

[0024] Fig. 4 shows the relationship between the position of the object 4 to be detected in the X direction and the magnetic field strength By at the position of the magnetic sensor element 3 in this embodiment. The second yoke 18 has the effect of enhancing the magnetic field strength By, and the magnetic flux strength By is increased compared to the first and second embodiments. To increase the magnetic field strength By, the second yoke 18 preferably has an elongated shape in the Y direction. Specifically, the dimension of the second yoke 18 in the Y direction is preferably larger than its dimension in the X direction and Z direction.

[0025] As in Fig. 9, the magnetic sensor 1 includes a first element 19 and a second element 20. The first element 19 has first and second magnets 2A and 2B, a first yoke 14, and a resin-formed first case 25 that supports the first and second magnets 2A and 2B and the first yoke 14. The second element 20 includes the magnetic sensor element 3 (IC package 5), the second yoke 18, and the second case 26 that supports the magnetic sensor element 3 and the second yoke 18. The first element 19 has projections 27 on a side surface, and the second element 20 has openings 28 on a side surface into which the projections 27 are engaged. Since the first element 19 and the second element 20 are connected by a snap-in connection, the manufacturing process is simplified.Although the snap connection is a simple and preferred connection means, other connection means such as gluing, laser welding, ultrasonic welding and screwing can also be used to connect the first element 19 and the second element 20. Fourth embodiment

[0026] Fig.10 is a conceptual diagram of the clutch assembly 31 according to the fourth embodiment of the present disclosure. The clutch assembly 31 uses the magnetic sensor 1 according to the first to third embodiments described above. The clutch assembly 31 includes a clutch 32 and a magnetic sensor 1. The clutch 32 includes a rotating disk 33 and a driven disk 34 facing the rotating disk 33 in the X direction. The clutch 32 is a friction clutch, and the opposing surfaces of the rotating disk 33 and the driven disk 34 form flat friction surfaces. Although not shown in the drawings, the clutch 32 may be a dog clutch. In this case, the opposing surfaces of the rotating disk 33 and the driven disk 34 are provided with projections and recesses.Concave and convex shapes are formed in the circumferential direction so that the rotating disk 33 and the driven disk 34 engage with each other without slipping in the circumferential direction.

[0027] The rotating disk 33 receives torque from a rotation drive means 35. The rotation drive means 35 is configured by a suitable combination of, for example, a driver, a motor, and a reduction gear. When the driven disk 34 engages with the rotating disk 33, the torque of the rotating disk 33 is transmitted to the driven disk 34. The movable plate 36 can be attached to either the rotating disk 33 or the driven disk 34, and in this embodiment, it is attached to the driven disk 34. The movable plate 36 is driven in the X direction by a drive means 37 to control the engagement and disengagement of the rotating disk 33 and the driven disk 34. The detection object 4 in this embodiment is the movable plate 36.In other words, the magnetic sensor 1 detects the position of the movable plate 36 in the X direction and thus controls the operation of the clutch assembly 31. List of reference symbols 1 magnetic sensor 2A first magnet 2B second magnet 3 magnetic sensor element 4 object to be detected 14 first yoke 15 side panel 16 Connecting part 17 through hole 18 second yoke 19 first element 20 second element 25 first housing 26 second housing 31 Coupling arrangement 32 Clutch 33 rotating disc 34 driven pulley 36 movable plate QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] JP 6,464,907 B [0002, 0003]

Claims

[1] A magnetic sensor (1) which detects a position of an object (4) to be detected, which object comprises a soft magnetic material, in the X direction in a coordinate system having an X direction, a Y direction and a Z direction which are perpendicular to each other, comprising: two magnets (2A and 2B) positioned along the X-direction and having opposing surfaces (21A and 21B) facing each other and having different polarities; and a magnetic sensor element (3) positioned between the two magnets (2A and 2B) as seen from the Y direction, wherein the object to be detected (4) is movable in the X direction between the two magnets (2A and 2B) as seen from the Y direction. [2] The magnetic sensor (1) according to claim 1, wherein the magnetic sensor element (3) detects a magnetic field strength (By) in the Y direction, and the magnetic sensor (1) uses only the magnetic field strength (By) in the Y direction detected by the magnetic sensor element (3) as the magnetic field strength (By) to output a signal indicative of a position in the X direction. [3] The magnetic sensor (1) according to claim 1 or 2, wherein at least a part of each of the two magnets (2A and 2B) overlaps in the Y direction with the object (4) to be detected. [4] The magnetic sensor (1) according to claim 3, wherein the two magnets (2A and 2B) are spaced apart from the magnetic sensor element (3) in the Y direction. [5] The magnetic sensor (1) according to claim 3, wherein the two magnets (2A and 2B) overlap with the magnetic sensor element (3) in the Y direction. [6] The magnetic sensor (1) according to one of claims 3 to 5, wherein the two magnets (2A and 2B) are positioned in the Y direction away from the object (4) to be detected and towards the magnetic sensor element (3). [7] The magnetic sensor (1) according to any one of claims 1 to 6, further comprising a first yoke (14) fixed to the two magnets (2A and 2B). [8] The magnetic sensor (1) according to claim 7, wherein the first yoke (14) has two side parts (15) which are respectively fixed to rear surfaces (22A and 22B) which are opposite to the opposite surfaces (21A and 21B) of the two magnets (2A and 2B), and a connecting part (16) which connects the two side parts (15), and the magnetic sensor element (3) is arranged in the Y direction between the connecting part (16) and the moving area (6) of the object (4) to be detected. [9] The magnetic sensor (1) according to claim 8, wherein the connecting part (16) does not have a through hole (17) extending in the Y direction. [10] The magnetic sensor (1) according to claim 8, wherein the first yoke (14) has two side parts (15) which are respectively fixed to the back surfaces (22A and 22B) which are opposite to the opposite surfaces (21A and 21B) of the two magnets (2A and 2B), and a connecting part (16) which connects the two side parts (15) and has a through hole (17) extending in the Y direction, and the magnetic sensor (1) further comprises a second yoke (18) which has a part arranged in the through hole (17). [11] The magnetic sensor (1) according to claim 10, wherein the second yoke (18) has a center line extending in the Y direction and passing through the magnetic sensor element (3). [12] The magnetic sensor (1) according to claim 10 or 11, wherein the second yoke (18) has an elongated shape in the Y direction. [13] The magnetic sensor (1) according to any one of claims 10 to 12, wherein the second yoke (18) is spaced from the first yoke (14). [14] The magnetic sensor according to any one of claims 10 to 13, further comprising: a first element (19) comprising the two magnets (2A and 2B), the first yoke (14) and a first housing (25) supporting the two magnets (2A and 2B) and the first yoke (14); and a second element (20) comprising the magnetic sensor element (3), the second yoke (18) and a second housing (26) carrying the magnetic sensor element (3) and the second yoke (18), wherein the first element (19) and the second element (20) are connected by a connecting means. [15] The magnetic sensor (1) according to claim 14, wherein the connecting means is a snap connection. [16] The magnetic sensor according to any one of claims 1 to 6, further comprising a yoke having a center line extending in the Y direction, the center line passing through the magnetic sensor element (3). [17] A coupling arrangement (31) comprising: the magnetic sensor (1) according to one of claims 1 to 16 and a clutch (32) having a rotating disk (33) that receives a torque, a driven disk (34) facing the rotating disk (33) in the X direction and engaging with the rotating disk (33) to transmit the torque, and a movable plate (36) driving either the rotating disk (33) or the driven disk (34) in the X direction to control the engagement and disengagement between the rotating disk (33) and the driven disk (34), where the movable plate is the object to be detected.

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