Sensor device

Abstract

Embodiments may provide a sensor device comprising: a rotor; a stator provided to correspond to the rotor; a first outer collector and a second outer collector disposed on one side of the stator; the first inner collector and the second inner collector are arranged between the first outer collector and the second outer collector; and a Hall sensor disposed between the first inner collector and the second inner collector.

Description

Technical Field

[0001] Embodiments relate to sensor devices. Background Art

[0002] The power steering system (electronic power system (hereinafter, referred to as "EPS")) ensures cornering stability and provides quick restoring force by allowing an electronic control unit to operate a motor according to driving conditions, thereby enabling the driver to perform safe driving.

[0003] EPS includes a sensor device configured to measure the torque of the steering shaft, the steering angle, etc. to provide an appropriate torque. The sensor device is a device that measures the degree of twisting of the torsion bar. The steering shaft includes an input shaft connected to the steering wheel and an output shaft connected to the wheel-side power transmission structure, and the torsion bar is a member configured to connect the input shaft and the output shaft.

[0004] The sensor device includes a housing, a rotor, a stator including stator teeth, and a collector. In this case, the collector is disposed outside the stator teeth. Therefore, when an external magnetic field is formed, the collector serves as a passage for the external magnetic field, which causes a problem that the collector affects the magnetic flux value of the sensor. When the sensor is affected by the collector, the output value of the sensor device changes, which causes a problem that the degree of torsion of the torsion bar cannot be accurately measured.

[0005] Public Content

[0006] Technical issues

[0007] An object of the embodiment is to provide a sensor device capable of compensating for the amount of change in a sensor output value caused by external magnetism.

[0008] Technical Solutions

[0009] An embodiment may provide a sensor device, comprising: a rotor; a stator, the stator being configured to correspond to the rotor; a first outer collector and a second outer collector, the first outer collector and the second outer collector being disposed at one side of the stator; a first inner collector and a second inner collector, the first inner collector and the second inner collector being disposed between the first outer collector and the second outer collector; and a Hall sensor, the Hall sensor being disposed between the first inner collector and the second inner collector.

[0010] The first outer collector may include: a first region located at a first side of the stator in an axial direction; a second region located at a second side of the stator; and a third region configured to connect the first region and the second region, and the second outer collector may include: a fourth region located at the second side of the stator in the axial direction; a fifth region located at the first side of the stator; and a sixth region configured to connect the fourth region and the fifth region.

[0011] The first inner collector and the second inner collector may be disposed between the second region and the fifth region.

[0012] The first outer collector and the first inner collector may be disposed to be spaced apart from each other, and the second outer collector and the second inner collector may be disposed to be spaced apart from each other.

[0013] The second region, the fifth region, the first inner collector, and the second inner collector may overlap with each other in the axial direction.

[0014] The second region may include a first bent portion bent toward the first side, and the first bent portion may be disposed to overlap the first inner collector in a direction perpendicular to the axial direction.

[0015] The first bent portion may be disposed to overlap the hall sensor in a direction perpendicular to the axial direction.

[0016] The first region and the second region may be disposed on a plane perpendicular to the axial direction, and the third region may be disposed perpendicular to the first region and the second region.

[0017] The fourth region and the fifth region may be disposed on a plane perpendicular to the axial direction, and the sixth region may be disposed perpendicular to the fourth region and the fifth region.

[0018] The second region may include an inner surface and an outer surface, the inner surface may include a curved surface, and the outer surface may include a protruding portion protruding outward in a direction perpendicular to the axial direction.

[0019] The fourth region may include an inner surface and an outer surface, the inner surface may include a curved surface, and the outer surface may include a second protrusion portion protruding outward in a direction perpendicular to the axial center.

[0020] The first inner collector may include: a seventh region, which is configured to correspond to the second region; an eighth region, which is bent from the seventh region toward the first side; and a ninth region, which is bent from the eighth region in a direction perpendicular to the axial direction.

[0021] The second inner collector may include: a tenth region, which is configured to correspond to the fifth region; an eleventh region, which is bent from the fifth region toward the second side; and a twelfth region, which is bent from the eleventh region in a direction perpendicular to the axial direction.

[0022] An embodiment may provide a sensor device, comprising: a rotor; a stator, the stator being configured to correspond to the rotor; a first outer collector, the first outer collector being disposed at one side of the stator and configured to acquire a magnetic field from the stator; a first inner collector, the first inner collector being disposed to be spaced apart from the first outer collector and configured to acquire a magnetic field from the first outer collector; and a first Hall sensor unit, the first Hall sensor unit being configured to acquire a magnetic field from the first inner collector.

[0023] The first outer collector may be disposed to be spaced apart from the stator, and the first inner collector may be disposed to be spaced apart from the first outer collector.

[0024] The magnetic field obtained from the stator can be transmitted to the first Hall sensor unit through the first outer collector and the first inner collector, and the external magnetic field in the axial direction can be collected at one side of the first outer collector based on the axial direction and released to the other side of the first outer collector.

[0025] The first outer collector may include: a first region, which is located at a first side of the stator in an axial direction; a second region, which is located at a second side of the stator; and a third region, which is configured to connect the first region and the second region, and the external magnetic field in the axial direction can be collected in the first region and released to the outside of the third region through the second region.

[0026] The external magnetic field in the direction perpendicular to the axial direction may be collected at one side of the first outer collector based on the direction perpendicular to the axial direction and released to the other side of the first outer collector.

[0027] The first outer collector may include: a first region, which is located at a first side of the stator in the axial direction; a second region, which is located at a second side of the stator; and a third region, which is configured to connect the first region and the second region, the second region may include a first bent portion bent toward the second side, and the external magnetic field in a direction perpendicular to the axial direction may be collected in the first bent portion.

[0028] The sensor device may also include: a second outer collector, which is arranged at the other side of the stator and is configured to obtain a magnetic field from the stator; a second inner collector, which is arranged to be separated from the second outer collector and is configured to obtain a magnetic field from the second outer collector; and a second Hall sensor unit, which is arranged to obtain a magnetic field from the first inner collector and the second inner collector.

[0029] The second outer collector may be disposed to be spaced apart from the stator, and the second inner collector may be disposed to be spaced apart from the second outer collector.

[0030] The magnetic field obtained from the stator can be transmitted to the first and second Hall sensor units through the second outer collector and the second inner collector, and the external magnetic field in the axial direction can be collected at one side of the second outer collector and released to the other side of the second outer collector.

[0031] The second outer collector may include: a fourth region, which is located at the second side of the stator in the axial direction; a fifth region, which is located at the first side of the stator; and a sixth region, which is configured to connect the fourth region and the fifth region, and the external magnetic field in the axial direction can be collected in the sixth region and released to the outside of the fourth region through the fifth region.

[0032] The external magnetic field in the direction perpendicular to the axial direction may be collected at one side of the second outer collector in the direction perpendicular to the axial direction and released to the other side of the second outer collector.

[0033] The second outer collector may include: a fourth region, which is located at the second side of the stator in the axial direction; a fifth region, which is located at the second side of the stator; and a sixth region, which is configured to connect the fourth region and the fifth region, and the fifth region may include a second bent portion bent toward the second side, and the external magnetic field in a direction perpendicular to the axial direction can be collected in the second bent portion.

[0034] Beneficial Effects

[0035] According to an embodiment, the outer collector acts as a shield to the external magnetic field, thereby reducing the effect of the external magnetic field on the Hall sensor.

[0036] According to the embodiment, an external magnetic field applied in the axial direction and an external magnetic field applied in a direction perpendicular to the axial direction may be prevented from affecting the Hall sensor.

[0037] According to an embodiment, the outer collector and the inner collector are separated so that the external magnetic field can flow more efficiently.

[0038] According to an embodiment, the outer collector and the inner collector are separated, so that the outer collector and the inner collector are easily assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a perspective view showing a sensor device according to an embodiment.

[0040] Figure 2 It is shown Figure 1 A view of the rotor, stator and collector of a sensor device is shown.

[0041] Figure 3 is a perspective view showing a first outer collector and a second outer collector.

[0042] Figure 4 is a perspective view showing a first outer collector.

[0043] Figure 5 is a top view of the first outer collector.

[0044] Figure 6 is a perspective view showing the second outer collector.

[0045] Figure 7 is a top view of the second outer collector.

[0046] Figure 8 is a perspective view showing a first outer collector and a first inner collector.

[0047] Fig. 9 is a perspective view showing a second outer collector and a second inner collector.

[0048] Fig.10 is a view showing magnetic currents generated by a rotor and a stator.

[0049] Fig.11 is a view showing the flow of an external magnetic field applied in the axial direction.

[0050] Fig.12 is a view showing the flow of an external magnetic field applied in a direction perpendicular to the axial direction.

[0051] Fig.13 is a view showing a state in which the first inner collector and the second inner collector are mounted on the housing.

[0052] Fig.14 is a view showing a state in which the first outer collector and the second outer collector are mounted on the housing.

[0053] Fig.15 is a view showing a state in which the first outer collector and the second outer collector are completely mounted on the housing. DETAILED DESCRIPTION

[0054] Hereinafter, a direction perpendicular to the axial direction of the sensor device is referred to as a radial direction, and a direction defined around an axial center by a circle having a radius in the radial direction is referred to as a circumferential direction.

[0055] Figure 1 is a perspective view showing a sensor device according to an embodiment, and Figure 2 It is shown Figure 1 A view of the rotor 100 , the stator 200 and the collector of a sensor device is shown.

[0056] Reference Figure 1 and Figure 2 , the sensor device according to the embodiment may include a rotor 100, a stator 200, a first outer collector 300, a second outer collector 400, a first inner collector 500, a second inner collector 600, and a Hall sensor 700. In the drawings, the x-axis indicates a direction perpendicular to the axial direction, the y-axis indicates a direction perpendicular to the direction indicated by the x-axis and perpendicular to the axial direction, and the z-axis is the axial direction.

[0057] In this case, the stator 200 may be connected to an output shaft (not shown), and the rotor 100 having at least a portion rotatably disposed on the stator 200 may be connected to an input shaft (not shown). However, the present disclosure is not necessarily limited thereto. In this case, the rotor 100 may be disposed to be rotatable relative to the stator 200. Hereinafter, the term "inside" may mean a direction disposed toward the center based on a radial direction, and the term "outside" may mean a direction opposite to the inside.

[0058] The rotor 100 may include a magnet. The magnet may be disposed inside the stator 200. The magnet may be connected to the input shaft through a separate holder.

[0059] The housing 10 is disposed at the outside of the stator 200. The housing 10 may include an upper housing 11 and a lower housing 12. The stator 200, the first outer collector 300, the second outer collector 400, the first inner collector 500, and the second inner collector 600 may be fixed to the housing 10.

[0060] The first outer collector 300 may be disposed in the axial direction from the first side toward the second side of the stator 200. The second outer collector 400 may be disposed in the axial direction from the second side toward the first side of the stator 200. The first side is one side of the stator 200 based on the axial direction, and the second side is the other side of the stator 200 based on the axial direction.

[0061] The first inner collector 500 and the second inner collector 600 are disposed to correspond to the Hall sensor 700 .

[0062] The Hall sensor 700 may include a first Hall sensor unit 710 and a second Hall sensor unit 720 .

[0063] The first Hall sensor unit 710 and the second Hall sensor unit 720 are disposed between the first inner collector 500 and the second inner collector 600, and detect changes in the magnetic field generated between the stator 200 and the rotor 100. The first Hall sensor unit 710 and the second Hall sensor unit 720 may both be Hall ICs. The sensor device measures torque based on the detected changes in the magnetic field.

[0064] The first outer collector 300 and the second outer collector 400 may be identical in shape and size but different in position. The first inner collector 500 and the second inner collector 600 may also be identical in shape and size but different in position.

[0065] The first and second inner collectors 500 and 600 are positioned between the first and second outer collectors 300 and 400 in the axial direction. Therefore, compared with the first and second outer collectors 300 and 400, the first and second inner collectors 500 and 600 are relatively less affected by the external magnetic field applied in the axial direction.

[0066] The first inner collector 500 may be disposed to be spaced apart from the first outer collector in the axial direction. In addition, the second inner collector 600 may be disposed to be spaced apart from the second outer collector in the axial direction.

[0067] The first outer collector 300 or the second outer collector 400 guides the flow of the magnetic field generated between the rotor 100 and the stator 200 to the first inner collector 500 or the second inner collector 600. In addition, the first outer collector 300 or the second outer collector 400 is used to guide the flow of the external magnetic field so that the external magnetic field is released to the outside without flowing to the Hall sensor 700.

[0068] The first inner collector 500 and the second inner collector 600 are used to transfer a magnetic flow generated between the rotor 100 and the stator 200 to the Hall sensor 700 .

[0069] Figure 3 is a perspective view showing a first outer collector 300 and a second outer collector 400, Figure 4 is a perspective view showing the first outer collector 300, and Figure 5 is a top view of the first outer collector 300 .

[0070] Reference Figure 3 and Figure 4The first outer collector 300 includes a first region 310 , a second region 320 , a third region 330 and a first bending portion 340 .

[0071] The first region 310 is located at a first side of the stator 200. The first region 310 is disposed to overlap the stator 200 in the axial direction. The second region 320 is located at a second side of the stator 200. The stator 200 may be disposed between the first region 310 and the second region 320 in the axial direction.

[0072] The second region 320 is disposed to overlap the stator 200 in the axial direction. The third region 330 connects the first region 310 and the second region 320. The first bent portion 340 is bent from an end portion of the second region 320 toward the first side.

[0073] The first region 310, the second region 320, the third region 330 and the first bending portion 340 have been described as being distinguished according to their functions, positions and shapes. However, the first region 310, the second region 320, the third region 330 and the first bending portion 340 may be connected to each other to define a single member.

[0074] The first region 310 may be disposed on a plane perpendicular to the axial direction. The first region 310 may include an inner surface 311, an outer surface 312, and a first protruding portion 350. The inner surface 311 includes a curved surface. The center of curvature of the inner surface 311 may coincide with the axial center of the sensor device. The outer surface 312 may also include a curved surface. The first protruding portion 350 protrudes outward in a direction perpendicular to the axial direction.

[0075] The second region 320 may be disposed on a plane perpendicular to the axial direction. The second region 320 is disposed to be spaced apart from the first region 310 in the axial direction.

[0076] The first region 310 and the second region 320 are arranged not to overlap each other when viewed in the axial direction. The first region 310 is arranged to overlap the stator 200, while the second region 320 is arranged not to overlap the stator 200. The second region 320 is located outside the first region 310 in the radial direction.

[0077] The third region 330 connects one end of the first region 310 and one end of the second region 320 .

[0078] The first bent portion 340 is bent from the other end of the second region 320 to be directed toward the first side of the stator 200 .

[0079] Figure 6 is a perspective view showing the second outer collector 400, and Figure 7 is a top view of the second outer collector 400 .

[0080] Reference Figure 6 and Figure 7 The second outer collector 400 includes a fourth region 410 , a fifth region 420 , a sixth region 430 and a second bending portion 440 .

[0081] The fourth region 410 is located at the second side of the stator 200. The fourth region 410 is disposed to overlap the stator 200 in the axial direction. The fourth region 410 is located at the second side of the stator 200. The stator 200 may be disposed between the fourth region 410 and the fifth region 420 in the axial direction.

[0082] The fifth region 420 is disposed not to overlap the stator 200 in the axial direction. The sixth region 430 connects the fourth region 410 and the fifth region 420. The second bent portion 440 is bent from an end portion of the fifth region 420 toward the second side.

[0083] The fourth region 410, the fifth region 420, the sixth region 430 and the second bending portion 440 have been described as being distinguished according to their functions, positions and shapes. However, the fourth region 410, the fifth region 420, the sixth region 430 and the second bending portion 440 may be connected to each other to define a single member.

[0084] The fourth region 410 may be disposed on a plane perpendicular to the axial direction. The fourth region 410 may include an inner surface 411, an outer surface 412, and a second protruding portion 450. The inner surface 411 includes a curved surface. The center of curvature of the inner surface 411 may coincide with the axial center of the sensor device. The outer surface 412 may also include a curved surface. The second protruding portion 450 protrudes outward in a direction perpendicular to the axial direction.

[0085] The fifth region 420 may be disposed on a plane perpendicular to the axial direction. The fifth region 420 is disposed to be spaced apart from the fifth region 410 in the axial direction.

[0086] The fourth region 410 and the fifth region 420 may be arranged not to overlap each other when viewed in the axial direction. The fourth region 410 is arranged to overlap the stator 200, while the fifth region 420 is arranged not to overlap the stator 200. The fifth region 420 is located outside the fourth region 410 in the radial direction.

[0087] The sixth region 430 connects one end of the fourth region 410 and one end of the fifth region 420 .

[0088] The second bent portion 440 is bent from the other end of the fifth region 420 to be directed toward the second side of the stator 200 .

[0089] Figure 8is a perspective view showing the first outer collector 300 and the first inner collector 500 .

[0090] Reference Figure 8 , the first inner collector 500 may include a seventh region 510 , an eighth region 520 , and a ninth region 530 .

[0091] The seventh region 510 is disposed on a plane perpendicular to the axial direction. The seventh region 510 is disposed to correspond to the second region 320. The seventh region 510 is disposed to overlap with the second region 320 in the axial direction. The seventh region 510 may be disposed to be spaced apart from the second region 320 in the axial direction.

[0092] The eighth region 520 is bent from two opposite ends of the seventh region 510 toward the first side. The eighth region 520 may be disposed perpendicular to the seventh region 510. The ninth region 530 is bent from the eighth region 520 in a direction perpendicular to the axial direction. The ninth region 530 is disposed on a plane perpendicular to the axial direction. The ninth region 530 is disposed to face the Hall sensor 700.

[0093] Fig. 9 is a perspective view showing the second outer collector 400 and the second inner collector 600 .

[0094] Reference Fig. 9 The second inner collecting electrode 600 may include a tenth region 610 , an eleventh region 620 and a twelfth region 630 .

[0095] The tenth region 610 is disposed on a plane perpendicular to the axial direction. The tenth region 610 is disposed to correspond to the fourth region 410. The tenth region 610 is disposed to overlap with the fourth region 410 in the axial direction. The tenth region 610 may be disposed to be spaced apart from the fourth region 410 in the axial direction.

[0096] The eleventh region 620 is bent from the tenth region 610 toward the second side. The eleventh region 620 may be disposed perpendicularly to the tenth region 610. The eleventh region 620 is bent from the tenth region 610 in a direction perpendicular to the axial direction. The twelfth region 630 is disposed on a plane perpendicular to the axial direction. The twelfth region 630 is disposed to face the Hall sensor 700.

[0097] The first inner collector 500 and the second inner collector 600 may be disposed between the second region 320 and the fifth region 420 in the axial direction. In addition, the second region 320, the fifth region 420, the first inner collector 500, and the second inner collector 600 may be disposed to overlap each other in the axial direction.

[0098] Fig.102 is a view showing a magnetic field M formed by the rotor and the stator 200 .

[0099] Reference Fig.10 , the magnetic field M formed by the rotor and the stator 200 flows to the second outer collector 400 through the first outer collector 300 and the first inner collector 500. Specifically, the magnetic field M formed by the rotor 100 and the stator 200 is collected in the first region 310, and flows to the second region 320 through the third region 330. The magnetic field M of the second region 320 flows to the first inner collector 500. A portion of the magnetic field M of the first inner collector 500 flows to the Hall sensor 700, and another portion of the magnetic field M is collected in the fifth region 420 of the second outer collector 400. The magnetic field M of the fifth region 420 flows to the fourth region 410 through the sixth region 430, and the magnetic field M flowing to the fourth region 410 flows to the stator 200.

[0100] Fig.11 is a view showing the flow of external magnetic fields M1 and M2 applied in the axial direction.

[0101] Reference Fig.11 , the external magnetic field M1 applied in the axial direction can be released to the outside through the first outer collector 300. Specifically, the external magnetic field M1 applied in the axial direction is collected in the first region 310 of the first outer collector 300. The external magnetic field M1 collected in the first region 310 flows to the second region 320 through the third region 330, and the external magnetic field M1 of the second region 320 is released to the outside.

[0102] In addition, the external magnetic field M2 applied in the axial direction can be released to the outside through the second outer collector 400. Specifically, the external magnetic field M2 applied in the axial direction is collected in the fourth region 410 of the second outer collector 400. The external magnetic field M2 collected in the fourth region 410 flows to the fifth region 420 through the sixth region 430, and the external magnetic field M2 of the fifth region 420 is released to the outside.

[0103] As described above, the external magnetic fields M1 and M2 applied in the axial direction of the sensor device are released to the outside through the first outer collector 300 or the second outer collector 400 without affecting the Hall sensor 700 , so that changes in sensing values ​​caused by the external magnetic fields M1 and M2 can be minimized.

[0104] Meanwhile, the first bent portion 340 may be disposed to overlap the hall sensor 700 in a direction perpendicular to the axial direction. In addition, the first bent portion 340 may be disposed to overlap the first inner collector 500 in a direction perpendicular to the axial direction.

[0105] The second bent portion 440 may also be disposed to overlap the hall sensor 700 in a direction perpendicular to the axial direction. In addition, the second bent portion 440 may be disposed to overlap the second inner collector 600 in a direction perpendicular to the axial direction.

[0106] This enables the first bent portion 340 or the second bent portion 440 to collect an external magnetic field applied in a direction perpendicular to the axial direction, thereby preventing the external magnetic field from affecting the Hall sensor 700 .

[0107] Fig.12 is a view showing the flow of external magnetic fields M3 and M4 applied in a direction perpendicular to the axial direction.

[0108] Reference Fig.12 , the external magnetic field M3 applied in a direction perpendicular to the axial direction can also be released to the outside through the first outer collector 300. Specifically, the external magnetic field M3 applied in a direction perpendicular to the axial direction is collected in the first bending portion 340 of the first outer collector 300. The external magnetic field M3 collected in the first bending portion 340 flows to the third region 330 through the second region 320, and the external magnetic field M3 of the third region 330 is released to the outside in a complete manner.

[0109] In addition, the external magnetic field M4 applied in the axial direction can be released to the outside through the second outer collector 400. Specifically, the external magnetic field M4 applied in the axial direction is collected in the sixth region 430 of the second outer collector 400. The external magnetic field collected in the sixth region 430 flows to the fifth region 420 through the sixth region 430, and the external magnetic field M3 of the fifth region 420 flows to the second bending portion 440. The external magnetic field M3 of the second bending portion 440 is released to the outside.

[0110] As described above, the external magnetic fields M3 and M4 applied in a direction perpendicular to the axial direction of the sensor device are released to the outside through the first outer collector 300 or the second outer collector 400 without affecting the Hall sensor 700, so that changes in sensing values ​​caused by the external magnetic field can be minimized.

[0111] Table 1 below shows comparison between a shift of a sensing value according to an external magnetic field in the sensor device of the comparative example and a shift of a sensing value according to an external magnetic field in the sensor device according to the present example.

[0112] In this case, the comparative example is a sensor device including collectors provided at the first side and the second side of the stator 200 , respectively, that is, a sensor device including the collectors integrated with the legs directed toward the hall sensor 700 .

[0113] As shown in Table 1, it can be confirmed that when an external magnetic field is applied in the directions perpendicular to the axial direction (the first direction (x) and the second direction (y)), the offset of the sensing value of the comparative example and the offset of the sensing value of the present embodiment are almost equal to each other. However, it can be confirmed that when an external magnetic field is applied in the axial direction, the offset of the sensor device according to the present example is very low, which is 1 / 10 of the offset of the sensing value of the comparative example, and the influence of the external magnetic field applied in the axial direction is relatively smaller in the present example than in the comparative example.

[0114]

[0115]

[0116] Fig.13 1 is a view showing a state in which the first inner collector 500 and the second inner collector 600 are mounted on the housing 10 .

[0117] Reference Fig.13 , the first inner collector 500 and the second inner collector 600 may be configured separately from the first outer collector 300 and the second outer collector 400 and may be easily assembled.

[0118] In the process of assembling the sensor device, the first inner collector 500 and the second inner collector 600 may be assembled to the housing 10 before assembling the first outer collector 300 and the second outer collector 400. The housing 10 may include a hole 10a into which the first inner collector 500 or the second inner collector 600 is inserted. The first inner collector 500 may be assembled toward the first side of the stator 200, and the second inner collector 600 may be assembled toward the second side of the stator 200.

[0119] Fig.14 is a view showing a state in which the first outer collector 300 and the second outer collector 400 are mounted on the housing 10, and Fig.15 1 is a view showing a state in which the first outer collector 300 and the second outer collector 400 are mounted on the housing 10 .

[0120] Reference Fig.14 and Fig.15 , the first outer collector 300 and the second outer collector 400 may be assembled to the housing 10 in a state where the first inner collector 500 and the second inner collector 600 are assembled to the housing 10. The first outer collector 300 may be inserted into the housing 10 in a direction perpendicular to the axial direction so that the first outer collector 300 is aligned with the first inner collector 500. The second outer collector 400 may also be inserted into the housing 10 in a direction perpendicular to the axial direction so that the second outer collector 400 is aligned with the second inner collector 600.

[0121] As described above, since the first and second outer collectors 300 and 400 are separated from and assembled to the first and second inner collectors 500 and 600, the assembling process is simplified.

[0122] The above-described embodiments may be applied to various devices for vehicles or home appliances.

Claims

1. A sensor device, comprising: Rotor; a stator, the stator being arranged to correspond to the rotor; a first outer collector and a second outer collector, the first outer collector and the second outer collector being disposed at one side of the stator; a first inner collector and a second inner collector, the first inner collector and the second inner collector being disposed between the first outer collector and the second outer collector; A Hall sensor is disposed between the first inner collector and the second inner collector.

2. The sensor device according to claim 1, wherein: The first outer collector comprises: a first region located at a first side of the stator in an axial direction; a second region located at a second side of the stator; and a third region configured to connect the first region and the second region, and Wherein, the second outer collector comprises: a fourth region located at a second side of the stator in the axial direction; a fifth region located at the first side of the stator; and A sixth region is configured to connect the fourth region and the fifth region.

3. The sensor device according to claim 2, wherein: The first inner collector and the second inner collector are disposed between the second region and the fifth region.

4. The sensor device according to claim 1, wherein: The first outer collector and the first inner collector are disposed to be spaced apart from each other, and the second outer collector and the second inner collector are disposed to be spaced apart from each other.

5. The sensor device according to claim 2, wherein: The second region, the fifth region, the first inner collector, and the second inner collector overlap with each other in the axial direction.

6. A sensor device comprising: Rotor; a stator, the stator being arranged to correspond to the rotor; a first outer collector disposed at one side of the stator and configured to capture a magnetic field from the stator; a first inner collector disposed spaced apart from the first outer collector and configured to capture a magnetic field from the first outer collector; as well as A first Hall sensor unit is configured to acquire a magnetic field from the first inner collector.

7. The sensor device according to claim 6, wherein: The first outer collector is disposed to be spaced apart from the stator, and the first inner collector is disposed to be spaced apart from the first outer collector.

8. The sensor device according to claim 6, wherein: The magnetic field obtained from the stator is transferred to the first Hall sensor unit through the first outer collector and the first inner collector, and The external magnetic field in the axial direction is collected at one side of the first outer collector based on the axial direction, and released to the other side of the first outer collector.

9. The sensor device according to claim 8, wherein: The first outer collector comprises: a first region located at a first side of the stator in the axial direction; a second region located at a second side of the stator; and a third region configured to connect the first region and the second region, and The external magnetic field in the axial direction is collected in the first region and released to the outside of the third region through the second region.

10. The sensor device according to claim 6, wherein: The external magnetic field in a direction perpendicular to the axial direction is collected at one side of the first outer collector based on the direction perpendicular to the axial direction, and is released to the other side of the first outer collector.

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