Motor inspection assembly and massager

Abstract

The present application provides a motor inspection assembly and a massager. The motor inspection assembly comprises: a fixing support, a motor, a magnetic member, a circuit board, and one or two Hall sensors. The motor is fixed to a housing by means of the fixing support, the motor has a stator and a rotor shaft, and the fixing support is arranged on the stator. The magnetic member is fixed to the end of the rotor shaft close to the fixing support and rotates synchronously with the rotor shaft. The circuit board is fixed to the fixing support and is perpendicular to the axis of the rotor shaft. The one or two Hall sensors are arranged on the circuit board. By merely using an output voltage of a single Hall sensor or two Hall sensors, angle detection of the rotor shaft can be realized, which reduces the number of Hall sensors, making the massager have higher accuracy, lower manufacturing costs, more concise mechanism design, and more convenient mounting, thereby improving the production efficiency.

Description

Motor detection components and massagers Technical Field

[0001] This application relates to the field of health massage products technology, and in particular to a motor detection component and a massager. Background Technology

[0002] A massage device is a health care product that achieves a relaxing effect by physically stimulating body parts. A massage device typically includes a housing, a massage body, and a motor assembly. The massage body is movably mounted within the housing, and the motor assembly is housed within the housing and connected to the massage body. The motor assembly drives the massage body to produce vibrations, reciprocating movements, etc., to physically stimulate the body parts. Related technologies often use a magnetic encoder in the motor assembly to collect information such as the rotor's position and speed, but this approach suffers from high production costs. Utility Model Content

[0003] In view of this, this application provides a motor detection component and a massager, which has the technical effect of reducing production costs.

[0004] The first aspect of this application provides a motor detection assembly for a massager. The massager includes a housing, and the motor detection assembly is fixed inside the housing. The motor detection assembly includes: a fixed bracket; a motor fixed to the housing via the fixed bracket, the motor having a stator and a rotor shaft, the fixed bracket being disposed on the stator; a magnetic element fixed to one end of the rotor shaft near the fixed bracket and rotating synchronously with the rotor shaft, the magnetic element being divided into N poles and S poles along a straight line passing through its geometric center, and the geometric center of the magnetic element coinciding with the axis of the rotor shaft in the axial direction of the rotor shaft; a circuit board fixed to the fixed bracket and perpendicular to the axis of the rotor shaft; one or two Hall sensors disposed on the circuit board; when the number of Hall sensors is one, the geometric center of the Hall sensor coincides with the axis of the rotor shaft; when the number of Hall sensors is two, the two Hall sensors are distributed at 90° intervals around the axis of the rotor shaft.

[0005] In some embodiments, the magnetic element is circular and is divided into N poles and S poles along a straight line passing through its diameter; when the number of Hall sensors is 2, the lines connecting the geometric centers of the two Hall sensors to the rotor shaft axis are 90° apart.

[0006] In some embodiments, the magnetic element is a steel magnet, and the projection of the Hall sensor onto the rotor shaft in the axial direction is located within the steel magnet.

[0007] In some embodiments, a groove is provided at the end of the rotor shaft, and the magnetic component is bonded and fixed in the groove.

[0008] In some embodiments, one end of the rotor shaft is defined as the first end and the other end as the second end, the first end extending forward toward the circuit board and the Hall sensor; wherein, the second end is used to drive the massage body of the massager to move.

[0009] The second aspect of this application provides a massager, including a housing, a massage body, a transmission assembly, and a motor detection assembly as provided in the first aspect; the massage body is provided with a connecting rod that extends into the housing; the transmission assembly is disposed within the housing, and the rotor shaft is connected to the connecting rod via the transmission assembly.

[0010] In some embodiments, the massage body further includes a massage portion for contacting the human body, the massage portion being fixedly or detachably connected to one end of the connecting rod.

[0011] In some embodiments, the transmission assembly includes a rotating block, an eccentric shaft, and a drive rod, wherein the rotating block is coaxially fixed with the rotor shaft, the eccentric shaft is eccentrically disposed on the rotating block, one end of the drive rod is hinged to the eccentric shaft, and the other end of the drive rod is hinged to the connecting rod.

[0012] In some embodiments, the housing includes a first housing and a second housing, the second housing is fixed to one side of the first housing, a first receiving cavity is formed inside the first housing, and a second receiving cavity is formed between the second housing and the first housing; a transmission assembly and a motor are disposed in the first receiving cavity, and a Hall sensor is disposed in the second receiving cavity.

[0013] In some embodiments, the first shell is provided with a communication port connecting the first receiving cavity and the second receiving cavity, and a fixing bracket is embedded in the communication port.

[0014] The motor detection component and massager provided in this application reduce the number of Hall sensors and optimize their position distribution. The rotor shaft angle can be detected using the output voltage of one or two Hall sensors, resulting in higher accuracy, lower hardware cost, and simpler mechanism design, which greatly improves production efficiency. Attached Figure Description

[0015] Figure 1 shows the waveform of the square wave output by three Hall sensors in the related technology.

[0016] Figure 2 is a schematic diagram of the first structure of the first embodiment of the motor detection component provided in this application.

[0017] Figure 3 is a schematic diagram of the second structure of the first embodiment of the motor detection component provided in this application.

[0018] Figure 4 is an exploded view of the first embodiment of the motor detection component provided in this application.

[0019] Figure 5 is a cross-sectional schematic diagram of the first embodiment of the motor detection component provided in this application.

[0020] Figure 6 is a waveform diagram of the output waveform of the first embodiment of the motor detection component provided in this application.

[0021] Figure 7 is a structural schematic diagram of the second embodiment of the motor detection group provided in this application.

[0022] Figure 8 is a cross-sectional schematic diagram of the second embodiment of the motor detection group provided in this application.

[0023] Figure 9 is a projected schematic diagram of the second embodiment of the motor detection group provided in this application.

[0024] Figure 10 is a waveform diagram of the output waveform of the first embodiment of the motor detection component provided in this application.

[0025] Figure 11 is a schematic diagram of the structure of the massager provided in this application.

[0026] Figure 12 is an exploded view of the massager provided in this application.

[0027] Figure 13 is a cross-sectional schematic diagram of the massager provided in this application.

[0028] Figure 14 is a structural schematic diagram of the motor and transmission assembly provided in this application.

[0029] Figure 15 is an exploded view of the motor and transmission components provided in this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Motor detection assembly; 200. Massager; 10. Fixing bracket; 11. Mounting hole; 12. Support leg; 20. Motor; 21. Stator; 22. Rotor shaft; 221. Groove; 222. First end; 223. Second end; 30. Magnetic component; 40. Circuit board; 41. Signal output socket; 50. Hall sensor; 60. Housing; 61. First housing; 611. First receiving cavity; 612. Flexible limiting component; 613. Recess; 614. Connecting port; 62. Second housing; 621. Second receiving cavity; 70. Massager body; 71. Connecting rod; 72. Massage part; 80. Transmission assembly; 81. Rotating block; 2. Eccentric shaft; 83. Drive rod. Detailed Implementation

[0032] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0033] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an element positioned in between. When an element is considered to be "set" on another element, it can be directly set on the other element or there may be an element positioned in between. In this application, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising” and “equivalent to”, and any variations thereof, in the specification, claims, and foregoing description of the drawings, are intended to cover non-exclusive inclusion.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] Figure 1 shows the waveform of the square wave output by three Hall sensors in the related technology.

[0037] As shown in Figure 1, in related technologies, motor assemblies are equipped with magnetic encoders to collect information such as the rotor position and speed. However, magnetic encoders typically consist of magnetic rings and at least three Hall sensors (Hall A, Hall B, and Hall C), with the three Hall sensors distributed at 120° intervals around the rotor axis. The detection accuracy formula for a magnetic encoder is: electrical angle = 360° / number of Hall sensors, mechanical angle = 360° / twice the number of pole pairs. That is, the detection accuracy is limited by the number of pole pairs of the magnetic ring and the number of Hall sensors; the more Hall sensors, the larger the accuracy error. The theoretical minimum error for rotor motion detected by three pairs of magnetic rings is 60 degrees. To reduce accuracy errors, it is usually necessary to increase the number of magnetic ring pairs, but this significantly increases the cost.

[0038] Therefore, this application provides a motor detection component and a massager, which have the effect of reducing production costs.

[0039] This application first provides a motor detection component, which includes a motor drive mechanism and a motor detection mechanism. The motor drive mechanism can provide power, and the motor detection mechanism can detect information such as rotation angle and rotation speed.

[0040] The motor detection component can be applied to electrical devices that require power to operate. In the example of this application, the electrical device can be a massager. The motor detection component can output power to drive the massager's massage body to perform activities such as shaking or reciprocating movement, thereby providing physical stimulation to the user, such as vibration or tapping. Simultaneously, the massager can also adjust and control the intensity of the physical stimulation by acquiring information such as rotation angle and rotation speed; this will not be elaborated upon further in this application.

[0041] Figure 2 is a first structural schematic diagram of a first embodiment of the motor detection component provided in this application. Figure 3 is a second structural schematic diagram of the first embodiment of the motor detection component provided in this application. Figure 4 is an exploded view of the first embodiment of the motor detection component provided in this application. Figure 5 is a cross-sectional view of the first embodiment of the motor detection component provided in this application.

[0042] As shown in Figures 2 to 5, the motor detection assembly 100 includes a fixed bracket 10, a motor 20, a magnetic component 30, a circuit board 40, and a Hall sensor 50. The motor 20 can be an internal rotor motor or an external rotor motor; in this embodiment, an internal rotor motor is used as an example. The motor 20 is fixed to the housing 60 (see Figure 11) by the fixed bracket 10. The motor 20 has a stator 21 and a rotor shaft 22. Exemplarily, the rotor shaft 22 passes through the stator 21, and both ends of the rotor shaft 22 are exposed on opposite sides of the stator 21. For ease of understanding, one end of the rotor shaft 22 is defined as the first end 222, and the other end is defined as the second end 223. The first end 222 extends forward towards the magnetic component 30 and the circuit board 40, while the second end 223 extends backward and connects to the transmission assembly 80; that is, the second end 223 extends out of the motor 20 away from the first end 222. The axis of the rotor shaft 22 is illustrated by the dashed line A in the figure.

[0043] A fixed bracket 10 is disposed on the stator 21. For example, the fixed bracket 10 is fixedly connected to the stator 21, and a mounting hole 11 is provided in the middle of the fixed bracket 10, with the first end 222 extending into the mounting hole 11. Multiple support legs 12 are provided around the periphery of the fixed bracket 10, distributed around the mounting hole 11, and each support leg 12 is bolted and fixed to the housing 60 to facilitate the disassembly or installation of the motor detection assembly 100.

[0044] The magnetic element 30 is fixed to one end of the rotor shaft 22 near the fixed bracket 10 and rotates synchronously with the rotor shaft 22. The magnetic element 30 is divided into N poles and S poles along a straight line passing through its geometric center, and the geometric center of the magnetic element 30 coincides with the axis of the rotor shaft 22 in the axial direction of the rotor shaft 22. For example, a groove 221 is provided at the end of the rotor shaft 22, and the magnetic element 30 is bonded and fixed in the groove 221.

[0045] For example, the magnetic component 30 is circular, and it is divided into N-pole and S-pole regions along a straight line passing through its diameter; that is, the magnetic component 30 is symmetrically divided into N-pole and S-pole regions. For example, the magnetic component 30 is made of a magnetic steel sheet, and the projection of the Hall sensor 50 on the axial direction of the rotor shaft 22 is located within the magnetic steel sheet. It should be noted that the magnetic steel sheet is generally a permanent magnet material, such as neodymium iron boron, which has high remanence and coercivity and can maintain strong magnetism for a long time. It is usually made into blocks or sheets through processes such as melting, powdering, molding, and sintering, and then magnetized to acquire specific magnetism.

[0046] In actual manufacturing, the magnetic component 30 can also be replaced by a magnetic ring. However, magnetic rings are mostly made of ferrite materials (Mn-Zn), which have different impedance characteristics at different frequencies. The impedance is small at low frequencies and increases sharply at high frequencies, which makes the magnetic component 30 unstable.

[0047] For example, a groove 221 is formed in the middle of the end face of the first end 222 of the rotor shaft 22. The magnet is embedded in the groove 221 and is fixed to the rotor shaft 22 by anaerobic adhesive. It should be understood that the magnet can also be fixed to the rotor shaft 22 by conventional installation methods such as snap-fit.

[0048] The circuit board 40 is fixed to the mounting bracket 10, and the circuit board 40 is perpendicular to the axis of the rotor shaft 22. For example, the circuit board 40 is generally circular, and it is adhesively fixed to the mounting bracket 10, covering the mounting hole 11, so that the circuit board 40 covers the first end 222 and the magnetic component 30. The circuit board 40 is provided with a power supply, a signal output socket 41, and a drive circuit. The power supply powers the drive circuit and the Hall sensor 50. The signal output socket 41 can be electrically connected to a control module, which can be a control board with integrated control circuitry.

[0049] A Hall sensor 50 is disposed on the side of the circuit board 40 facing the first end 222. In this embodiment, the number of Hall sensors 50 is one, and the geometric center of the Hall sensor 50 coincides with the axis of the rotor shaft 22. Exemplarily, the Hall sensor 50 is soldered to the middle of the circuit board 40, the sensing surface of the Hall sensor 50 is disposed away from the circuit board 40, and the sensing surface of the Hall sensor 50 is parallel to the circuit board 40.

[0050] Figure 6 is a waveform diagram of the output waveform of the first embodiment of the motor detection component provided in this application.

[0051] Please refer to Figure 6. When the magnetic component 30 rotates simultaneously with the rotor shaft 22, it generates an alternating magnetic field. At this time, the Hall sensor 50 is relatively stationary relative to the magnetic component 30, meaning that the Hall sensor 50 can sense the change in the magnetic field and output a sinusoidal analog signal that reflects the change in the magnetic field. Thus, the control module can obtain the rotation angle of the rotor shaft 22 at a specified time based on the output result, and then calculate information such as the rotation position and rotation speed of the rotor shaft 22.

[0052] It is understandable that the existing technology usually adopts a detection scheme of magnetic ring and three Hall sensors 50. Since there are more Hall sensors 50, a larger error will be introduced, which will limit the detection accuracy. On this basis, to improve the accuracy, the number of magnetic rings needs to be increased, which will lead to an increase in hardware cost, a more complex structure, and increased installation difficulty, thus affecting production efficiency.

[0053] Compared to commonly used detection schemes in the prior art, this embodiment reduces the number of Hall sensors 50 and optimizes the position distribution of Hall sensors 50. The angle detection of the rotor shaft 22 can be achieved using the output voltage of a single Hall sensor 50, resulting in higher accuracy, lower hardware cost, simpler mechanism design, and reduced installation difficulty, thereby greatly improving production efficiency.

[0054] It is worth noting that the method by which the control module calculates the rotation angle of the rotor shaft 22 based on the output of the Hall sensor 50 can be obtained using techniques commonly used by those skilled in the art. However, the improvement of this application lies in the number and distribution of the Hall sensors 50. Therefore, the specific control principle is not described in detail here.

[0055] Figure 7 is a structural schematic diagram of the second embodiment of the motor testing group provided in this application. Figure 8 is a cross-sectional schematic diagram of the second embodiment of the motor testing group provided in this application. Figure 9 is a projected schematic diagram of the second embodiment of the motor testing group provided in this application.

[0056] Please refer to Figures 7 to 9. The difference between the second embodiment and the first embodiment includes: the number of Hall sensors 50 is two, and the two Hall sensors 50 are distributed at 90° intervals around the axis of the rotor shaft 22. For example, the sensing surfaces of the two Hall sensors 50 are parallel to the circuit board 40. The lines connecting the geometric centers of the two Hall sensors 50 to the axis of the rotor shaft 22 (i.e., the dashed lines X and Y in the figures) differ by 90°.

[0057] In this embodiment, the magnetic element 30 can be a magnetic sheet or a magnetic ring. The projections of the two Hall sensors 50 onto the axial direction of the rotor shaft 22 are both located within the magnetic element 30.

[0058] Figure 10 is a waveform diagram of the output waveform of the first embodiment of the motor detection component provided in this application.

[0059] Please refer to Figure 10. When the magnetic component 30 rotates simultaneously with the rotor shaft 22, an alternating magnetic field is generated. At this time, the two Hall sensors 50 are relatively stationary relative to the magnetic component 30, meaning both Hall sensors 50 can sense changes in the magnetic field and output a sinusoidal analog signal reflecting these changes. Thus, the control module can obtain the rotation angle of the rotor shaft 22 at a specified time based on the output, and further calculate information such as the rotation position and speed of the rotor shaft 22.

[0060] This embodiment reduces the number of Hall sensors 50 and optimizes their positional distribution. The angle detection of the rotor shaft 22 can be achieved using the output voltage of two Hall sensors 50. This results in higher accuracy, lower hardware cost, simpler mechanism design, and reduced installation difficulty, thereby greatly improving production efficiency.

[0061] In another embodiment, the Hall sensor 50, circuit board 40, and magnetic component 30 may also be disposed at the second end 223 of the rotor shaft 22. It is understood that the Hall sensor 50, circuit board 40, and magnetic component 30 provided in this application can be selectively disposed at the first end 222 or the second end 223 of the rotor shaft 22, which can reduce the space occupied at the first end 222 or the second end 223 to accommodate the arrangement of various housing structures.

[0062] Figure 11 is a structural schematic diagram of the massager provided in this application. Figure 12 is an exploded schematic diagram of the massager provided in this application. Figure 13 is a cross-sectional schematic diagram of the massager provided in this application.

[0063] Please refer to Figures 11 to 13 together. This application also provides a massager 200. The massager 200 includes a housing 60, a massage body 70, a transmission assembly 80, and a motor detection assembly 100 as described in any of the above embodiments, wherein the motor detection assembly 100 in the first embodiment is used as an example. The massage body 70 is provided with a connecting rod 71, which extends into the housing 60. The transmission assembly 80 is disposed within the housing 60, and the rotor shaft 22 is connected to the connecting rod 71 via the transmission assembly 80. When the rotor shaft 22 rotates, the rotor shaft 22 drives the connecting rod 71 to move via the transmission assembly 80, and the movement includes, but is not limited to, shaking, reciprocating movement, etc.

[0064] For example, the massage body 70 also includes a massage part 72 for contacting the human body. For example, the massage part 72 is fixedly disposed at one end of the connecting rod 71 and is used to apply massage force to the human body when the connecting rod 71 moves. In another embodiment, in order to facilitate the replacement of the massage part 72 to adapt to different application scenarios, the massage part 72 can be configured to be detachable, that is, the massage part 72 can be detachably connected to one end of the connecting rod 71.

[0065] Since the massage part 72 is a part that comes into contact with the human body, it can be made of soft materials such as silicone or hard materials such as nylon-reinforced rubber to combine a certain degree of elasticity and hardness. Different materials can be used for different application scenarios, and this application does not impose too many restrictions.

[0066] For example, the housing 60 includes a first housing 61 and a second housing 62, the second housing 62 is fixed to one side of the first housing 61, a first receiving cavity 611 is formed inside the first housing 61, and a second receiving cavity 621 is formed between the second housing 62 and the first housing 61.

[0067] For example, the first shell 61 is a modular shell structure composed of two shells. A flexible limiting member 612 is provided at one end of the first shell 61, which covers the connecting rod 71. The first shell 61 limits the movement of the connecting rod 71 through the flexible limiting member 612. A recessed portion 613 is provided on the side of the first shell 61, and the second shell 62 is covered by the recessed portion 613 to form a second receiving cavity 621.

[0068] For example, the transmission assembly 80 and the motor 20 are disposed in the first receiving cavity 611, and the Hall sensor 50 and the circuit board 40 are disposed in the second receiving cavity 621. The first housing 61 has a connecting port 614 that connects the first receiving cavity 611 and the second receiving cavity 621. The connecting port 614 penetrates the recess 613, and the fixing bracket 10 is embedded in the connecting port 614 so that the fixing bracket 10 can enter the first receiving cavity 611 and the second receiving cavity 621 respectively. The fixing bracket 10 has multiple legs 12, which are arranged at intervals around the fixing bracket 10 and are bolted to the first housing 61, thereby improving the installation stability of the fixing bracket 10.

[0069] For example, the first housing 61 and the second housing 62 are detachably connected, and the detachable connection method includes, but is not limited to, bolting, snap-fitting, and interference fit. By disassembling the second housing 62, the second receiving cavity 621 can be opened, thereby allowing for inspection and maintenance of the Hall sensor 50 and the circuit board 40.

[0070] Figure 14 is a structural schematic diagram of the motor and transmission assembly provided in this application. Figure 15 is an exploded schematic diagram of the motor and transmission assembly provided in this application.

[0071] Please refer to Figures 14 and 15 together. For example, the transmission assembly 80 includes a rotating block 81, an eccentric shaft 82, and a drive rod 83. The rotating block 81 is coaxially fixed with the rotor shaft 22, and the eccentric shaft 82 is eccentrically disposed on the rotating block 81, that is, the central axis of the eccentric shaft 82 has a preset distance from the central axis of the rotor shaft 22. One end of the drive rod 83 is hinged to the eccentric shaft 82, and the other end of the drive rod 83 is hinged to the connecting rod 71.

[0072] When the motor 20 is activated, the rotor shaft 22 drives the rotating block 81 to rotate, and the eccentric shaft 82 follows the rotation of the rotating block 81 to make a circular motion. At the same time, the eccentric shaft 82 and the drive rod 83 rotate relative to each other, so as to drive the drive rod 83 to reciprocate, and then drive the connecting rod 71 to reciprocate, thereby realizing the vibration or reciprocating movement of the massage part 72.

[0073] It should be noted that, since the motor testing mechanism of this application can provide more accurate testing precision, it will provide more precise control over the movement trajectory of the massage unit 72.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A motor detection component for a massager, characterized in that, The motor detection assembly (100) is fixed inside the housing (60) of the massager (200), and the motor detection assembly (100) includes: Fixed bracket (10); The motor (20) is fixed to the housing (60) by the fixed bracket (10). The motor (20) has a stator (21) and a rotor shaft (22). The fixed bracket (10) is disposed on the stator (21). A magnetic element (30) is fixed to one end of the rotor shaft (22) near the fixed bracket (10) and rotates synchronously with the rotor shaft (22). The magnetic element (30) is divided into N poles and S poles along a straight line passing through its geometric center, and the geometric center of the magnetic element (30) coincides with the axis of the rotor shaft (22) in the axial direction of the rotor shaft (22). The circuit board (40) is fixed to the fixed bracket (10) and is perpendicular to the axis of the rotor shaft (22); One or two Hall sensors (50) are disposed on the circuit board (40); When the number of Hall sensors (50) is 1, the geometric center of the Hall sensor (50) coincides with the axis of the rotor shaft (22); When the number of Hall sensors (50) is 2, the two Hall sensors (50) are distributed at 90° intervals around the axis of the rotor shaft (22).

2. The motor detection assembly according to claim 1, characterized in that, The magnetic element (30) is circular and is divided into N poles and S poles along a straight line passing through its diameter; When the number of Hall sensors (50) is 2, the lines connecting the geometric centers of the two Hall sensors (50) to the axis of the rotor shaft (22) are 90° apart.

3. The motor detection component according to claim 1, characterized in that, The magnetic component (30) is made of a magnetic steel sheet, and the projection of the Hall sensor (50) on the axial direction of the rotor shaft (22) is located within the magnetic steel sheet.

4. The motor detection assembly according to claim 1, characterized in that, The rotor shaft (22) has a groove (221) at its end, and the magnetic component (30) is bonded and fixed in the groove (221).

5. The motor detection component according to claim 1, characterized in that, One end of the rotor shaft (22) is defined as the first end (222) and the other end as the second end (223). The first end (222) extends forward and toward the circuit board (40) and the Hall sensor (50); wherein the second end (223) is used to drive the massage body (70) of the massager (200) to move.

6. A massager, characterized in that, The device includes a housing (60), a massage body (70), a transmission assembly (80), and a motor detection assembly as described in any one of claims 1-5; the massage body (70) is provided with a connecting rod (71), which extends into the housing (60); the transmission assembly (80) is disposed in the housing (60), and the rotor shaft (22) is connected to the connecting rod (71) via the transmission assembly (80).

7. The massager according to claim 6, characterized in that, The massage body (70) also includes a massage part (72) for contacting the human body, the massage part (72) being fixedly or detachably connected to one end of the connecting rod (71).

8. The massager according to claim 7, characterized in that, The transmission assembly (80) includes a rotating block (81), an eccentric shaft (82), and a drive rod (83). The rotating block (81) is coaxially fixed with the rotor shaft (22), the eccentric shaft (82) is eccentrically disposed on the rotating block (81), one end of the drive rod (83) is hinged to the eccentric shaft (82), and the other end of the drive rod (83) is hinged to the connecting rod (71).

9. The massager according to claim 7, characterized in that, The housing (60) includes a first housing (61) and a second housing (62), the second housing (62) being fixed to one side of the first housing (61), a first receiving cavity (611) being formed inside the first housing (61), and a second receiving cavity (621) being formed between the second housing (62) and the first housing (61). The transmission assembly (80) and the motor (20) are disposed in the first receiving cavity (611), and the Hall sensor (50) is disposed in the second receiving cavity (621).

10. The massager according to claim 9, characterized in that, The first shell (61) is provided with a communication port (614) connecting the first receiving cavity (611) and the second receiving cavity (621), and the fixed bracket (10) is embedded in the communication port (614).

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