Motor detection assembly and massager
By optimizing the position distribution using one or two Hall sensors in the massage device, and combining them with magnetic components that rotate synchronously with the rotor shaft, the problem of high cost of magnetic encoders is solved. This achieves high-precision rotor shaft angle detection and a simple mechanism design, reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-03-24
AI Technical Summary
The magnetic encoders used in the motor components of existing massage devices have high production costs, and their detection accuracy is limited by the number of Hall sensors, leading to increased hardware costs and structural complexity.
By employing one or two Hall sensors and optimizing their position distribution, an alternating magnetic field is generated through the synchronous rotation of a magnetic component and the rotor shaft. The rotor shaft angle is then detected using the output voltage of the Hall sensors, resulting in higher accuracy, lower hardware costs, and a simpler mechanism design.
It achieves high-precision rotor shaft angle detection, reduces production costs, simplifies mechanism design, and improves production efficiency.
Smart Images
Figure CN224037225U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of health massage products, and particularly relates to a motor detection assembly and a massager. BACKGROUND
[0002] The massage device is a health product for relaxing by physically stimulating the body part. The massage device usually comprises a shell, a massage body and a motor assembly. The massage body is movably arranged in the shell, and the motor assembly is arranged in the shell and connected to the massage body. The motor assembly is used to drive the massage body to vibrate, reciprocate and move, so as to physically stimulate the body part. The motor assembly in the related art is provided with a magnetic encoder to collect the position and speed of the rotor of the motor assembly. However, the production cost is high. CONTENT OF THE UTILITY MODEL
[0003] In view of this, the present application provides a motor detection assembly and a massager, which has the technical effect of reducing the production cost.
[0004] The first aspect of the present application provides a motor detection assembly of a massager. The massager comprises a shell, and the motor detection assembly is fixed in the shell. The motor detection assembly comprises: a fixed support; a motor fixed with the shell through the fixed support, the motor having a stator and a rotor shaft, and the fixed support being arranged on the stator; a magnetic piece fixed to one end of the rotor shaft close to the fixed support and synchronously rotating with the rotor shaft, the magnetic piece being divided into N poles and S poles along a straight line passing through the geometric center of the magnetic piece, and the geometric center of the magnetic piece and the axis of the rotor shaft coinciding in the axial direction of the rotor shaft; a circuit board fixed to the fixed support and perpendicular to the axis of the rotor shaft; and one or two Hall sensors arranged on the circuit board. In the case that the number of Hall sensors is 1, the geometric center of the Hall sensor coincides with the axis of the rotor shaft. In the case that the number of Hall sensors is 2, the two Hall sensors are distributed at an interval of 90° around the axis of the rotor shaft.
[0005] In some embodiments, the magnetic piece is circular, and the magnetic piece is divided into N poles and S poles along a straight line passing through the diameter of the magnetic piece. In the case that the number of Hall sensors is 2, the geometric centers of the two Hall sensors are apart by 90° from the axis of the rotor shaft.
[0006] In some embodiments, the magnetic piece is a magnetic steel sheet, and the projection of the Hall sensor in the axial direction of the rotor shaft is located in the magnetic steel sheet.
[0007] In some embodiments, the end of the rotor shaft is provided with a groove, and the magnetic piece is fixedly bonded in the groove.
[0008] In some embodiments, one end of the rotor shaft is defined as a first end and the other end is defined as a second end, the first end extends forward and is directed towards the circuit board and the Hall sensor; and the second end is configured to drive the massage body of the massager.
[0009] The second aspect of the present application provides a massager, comprising 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, the connecting rod extends into the housing; the transmission assembly is arranged in the housing, and the rotor shaft is in transmission connection with the connecting rod through the transmission assembly.
[0010] In some embodiments, the massage body further comprises a massage part for contacting the human body, the massage part is fixedly or detachably connected to one end of the connecting rod.
[0011] In some embodiments, the transmission assembly comprises a rotating block, an eccentric shaft, and a driving rod, wherein the rotating block is coaxially fixed with the rotor shaft, the eccentric shaft is eccentrically arranged in the rotating block, one end of the driving rod is hingedly connected with the eccentric shaft, and the other end of the driving rod is hingedly connected with the connecting rod.
[0012] In some embodiments, the housing comprises a first shell and a second shell, the second shell is fixed to one side of the first shell, a first receiving cavity is formed in the first shell, and a second receiving cavity is formed between the second shell and the first shell; the transmission assembly and the motor are arranged in the first receiving cavity, and the Hall sensor is arranged in the second receiving cavity.
[0013] In some embodiments, the first shell is provided with a communication port communicating the first receiving cavity and the second receiving cavity, and the fixed support is embedded in the communication port.
[0014] Through the motor detection assembly and the massager provided by the present application, by reducing the number of Hall sensors and optimizing the position distribution of the Hall sensors, the angle detection of the rotor shaft can be realized by using the output voltage of a single or two Hall sensors, which has higher precision, lower hardware cost, and more simple mechanism design, and greatly improves the production efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a waveform diagram of the output square wave of the three Hall sensors in the related art.
[0016] Figure 2 It is a first structural schematic diagram of the first embodiment of the motor detection assembly provided by the present application.
[0017] Figure 3 It is a second structural schematic diagram of the first embodiment of the motor detection assembly provided by the present application.
[0018] Figure 4 It is an exploded schematic diagram of the first embodiment of the motor detection assembly provided by the present application.
[0019] Figure 5 A cross-sectional view of the first embodiment of the motor detection assembly provided in the present application.
[0020] Figure 6 A waveform diagram of the output waveform of the first embodiment of the motor detection assembly provided in the present application.
[0021] Figure 7 A structural view of the second embodiment of the motor detection assembly provided in the present application.
[0022] Figure 8 A cross-sectional view of the second embodiment of the motor detection assembly provided in the present application.
[0023] Figure 9 A projection view of the second embodiment of the motor detection assembly provided in the present application.
[0024] Figure 10 A waveform diagram of the output waveform of the first embodiment of the motor detection assembly provided in the present application.
[0025] Figure 11 A structural view of the massager provided in the present application.
[0026] Figure 12 An exploded view of the massager provided in the present application.
[0027] Figure 13 A cross-sectional view of the massager provided in the present application.
[0028] Figure 14 A structural view of the motor and transmission assembly provided in the present application.
[0029] Figure 15 An exploded view of the motor and transmission assembly provided in the present application.
[0030] BRIEF DESCRIPTION OF THE DRAWINGS
[0031] 100, motor detection assembly;
[0032] 200, massager;
[0033] 10, fixed support; 11, mounting hole; 12, leg;
[0034] 20, motor; 21, stator; 22, rotor shaft; 221, recess; 222, first end; 223, second end;
[0035] 30, magnetic piece;
[0036] 40, circuit board; 41, signal output socket;
[0037] 50, Hall sensor;
[0038] 60, housing; 61, first shell; 611, first receiving cavity; 612, flexible limiting member; 613, recess; 614, communication port; 62, second shell; 621, second receiving cavity;
[0039] 70, massage body; 71, connecting rod; 72, massage part;
[0040] 80, transmission assembly; 81, rotating block; 82, eccentric shaft; 83, driving rod. DETAILED DESCRIPTION
[0041] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.
[0042] 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 can be an element disposed in the middle. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there can be an element disposed in the middle. In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0043] 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 in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. The specification, claims and above description of the drawings of the present application and the terms "include" and "have" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusion.
[0044] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0045] Figure 1 A waveform diagram of three Hall sensor output square waves in the related art.
[0046] As shown in Figure 1 the related art, a motor assembly is configured with a magnetic encoder to collect information such as the position and speed of the rotor of the motor assembly, but the magnetic encoder is usually composed of a magnetic ring and at least three Hall sensors (i.e., Hall A, Hall B, and Hall C), and the three Hall sensors are distributed at an interval of 120° around the axis of the rotor. The detection accuracy formula of the magnetic encoder is: electrical angle = 360° / number of Hall sensors, and 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, and the more the number of Hall sensors, the greater the accuracy error, and the theoretical minimum error of the rotor movement detected by a three-pole magnetic ring is 60 degrees. In order to reduce the accuracy error, it is usually necessary to increase the number of pole pairs of the magnetic ring, but this will significantly increase the cost.
[0047] Therefore, the embodiments of the present application provide a motor detection assembly and a massager, which have the effect of reducing production cost.
[0048] The present application first provides a motor detection assembly, which includes two parts of a motor driving mechanism and a motor detection mechanism. The motor driving mechanism can provide power, and the motor detection mechanism can detect information such as rotation angle and rotation speed.
[0049] The motor detection assembly can be applied to an electrical device that needs to work by using power. In the examples of the present application, the electrical device can be a massager. The motor detection assembly can drive the massage body of the massager to move, such as shaking, reciprocating, etc., to perform physical stimulation, such as vibration, knocking, etc., on the user. At the same time, the massager can also adjust and control the intensity of the physical stimulation by obtaining information such as rotation angle and rotation speed, which will not be described in detail in the present application.
[0050] Figure 2 A first structure schematic diagram of a first embodiment of the motor detection assembly provided by the present application. Figure 3 A second structure schematic diagram of the first embodiment of the motor detection assembly provided by the present application. Figure 4 An exploded schematic diagram of the first embodiment of the motor detection assembly provided by the present application. Figure 5 A cross-sectional schematic diagram of the first embodiment of the motor detection assembly provided by the present application.
[0051] As shown in Figures 2 to 5As shown, the motor detection assembly 100 comprises a fixing support 10, a motor 20, a magnetic piece 30, a circuit board 40 and a Hall sensor 50. The motor 20 can be an inner rotor motor or an outer rotor motor, and in this embodiment, the inner rotor motor is taken as an example. The motor 20 is fixed with the housing 60 (see Figure 11 ) through the fixing support 10, and the motor 20 has a stator 21 and a rotor shaft 22. Exemplarily, the rotor shaft 22 is arranged in the stator 21, and the two ends of the rotor shaft 22 are exposed on the opposite surfaces of the stator 21. For the convenience of understanding, one end of the rotor shaft 22 is defined as a first end 222, and the other end of the rotor shaft 22 is defined as a second end 223. The first end 222 extends forward and faces the magnetic piece 30 and the circuit board 40, and the second end 223 extends backward and is connected with a transmission assembly 80, i.e., the second end 223 extends out of the motor 20 away from the first end 222. The axis of the rotor shaft 22 is taken as an example by the dashed line A in the figure.
[0052] The fixing support 10 is arranged on the stator 21. Exemplarily, the fixing support 10 is fixedly connected with the stator 21, and a mounting hole 11 is formed in the middle of the fixing support 10, and the first end 222 extends into the mounting hole 11. A plurality of legs 12 are arranged on the circumferential side of the fixing support 10, and the plurality of legs 12 are distributed around the mounting hole 11, and the plurality of legs 12 are respectively bolted and fixed to the housing 60, so as to facilitate the disassembly or assembly of the motor detection assembly 100.
[0053] The magnetic piece 30 is fixed to one end of the rotor shaft 22 close to the fixing support 10 and rotates synchronously with the rotor shaft 22. The magnetic piece 30 is divided into N poles and S poles along a straight line passing through the geometric center thereof, and the geometric center of the magnetic piece 30 coincides with the axis of the rotor shaft 22 in the axial direction of the rotor shaft 22. Exemplarily, the end of the rotor shaft 22 is provided with a groove 221, and the magnetic piece 30 is adhesively fixed in the groove 221.
[0054] Exemplarily, the magnetic piece 30 is circular, and the magnetic piece 30 is divided into N poles and S poles along a straight line passing through the diameter thereof, i.e., the magnetic piece 30 is symmetrically divided into N-pole regions and S-pole regions. Exemplarily, the magnetic piece 30 adopts a magnetic steel sheet, and the projection of the Hall sensor 50 in the axial direction of the rotor shaft 22 is located in the magnetic steel sheet. It should be noted that the magnetic steel sheet is generally a permanent magnet material, such as neodymium iron boron, etc., which has high residual magnetism and coercive force, can maintain strong magnetism for a long time, and is usually made into blocks or sheets through processes such as smelting, powdering, forming, sintering, etc., and then magnetized to have specific magnetism.
[0055] In actual production and manufacturing process, the magnetic piece 30 can also be replaced by a magnetic ring, but the magnetic ring is usually made of ferrite material (Mn-Zn), which has different impedance characteristics at different frequencies. The impedance is small at low frequency, and the impedance sharply rises at high frequency, so that the magnetic piece 30 will exist in the case of instability.
[0056] Exemplarily, a groove 221 is formed in the middle of the end face of the first end 222 of the rotor shaft 22, and the magnetic steel sheet is embedded in the groove 221 and fixed to the rotor shaft 22 by anaerobic adhesive bonding. It should be understood that the magnetic steel sheet can also be fixed and installed on the rotor shaft 22 by a conventional mounting method such as clamping.
[0057] The circuit board 40 is fixed to the fixed support 10, and the axis of the circuit board 40 is perpendicular to the axis of the rotor shaft 22. Exemplarily, the circuit board 40 is circular as a whole, and the circuit board 40 is bonded and fixed to the fixed support 10 and covers the mounting hole 11, so that the circuit board 40 covers the first end 222 and the magnetic member 30. The circuit board 40 is provided with a power supply, a signal output socket 41 and a driving circuit, and the power supply is used to power the driving circuit and the Hall sensor 50. The signal output socket 41 can be electrically connected with a control module, and the control module can be a control panel provided with an integrated control circuit.
[0058] The Hall sensor 50 is arranged on the side of the circuit board 40 facing the first end 222. In the embodiment, the number of the Hall sensor 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 welded in the middle of the circuit board 40, the sensing surface of the Hall sensor 50 is arranged away from the circuit board 40, and the sensing surface of the Hall sensor 50 is parallel to the circuit board 40.
[0059] Figure 6 The waveform diagram of the output waveform of the first embodiment of the motor detection assembly provided in the present application is shown.
[0060] Please refer to Figure 6 When the magnetic member 30 rotates with the rotor shaft 22, an alternating magnetic field is generated, at this time, the Hall sensor 50 is in a relatively static state relative to the magnetic member 30, that is, the Hall sensor 50 can sense the change of the magnetic field, thereby outputting a sine wave analog signal reflecting the change of the magnetic field. In this way, the control module can obtain the rotation angle of the rotor shaft 22 at a specified time according to the output result, and further convert the rotation position and rotation speed of the rotor shaft 22 and other information.
[0061] It can be understood that the detection scheme of the magnetic ring and three Hall sensors 50 is generally used in the prior art. Since the number of Hall sensors 50 is larger, a larger error is introduced, which limits the detection accuracy. On this basis, increasing the number of magnetic rings to improve the accuracy will lead to an increase in hardware cost, a more complex structure, an increase in installation difficulty, and further affect the production efficiency.
[0062] Compared with the detection scheme commonly used in the prior art, the embodiment can realize angle detection of the rotor shaft 22 by using the output voltage of a single Hall sensor 50, has higher precision, lower hardware cost, simpler mechanism design, and reduced installation difficulty, and thus greatly improves production efficiency, on the basis of reducing the number of Hall sensors 50 and matching an optimized position distribution mode of the Hall sensors 50.
[0063] It should be noted that the method for the control module to calculate the rotation angle of the rotor shaft 22 according to the output result of the Hall sensor 50 can be obtained by using the technical means commonly used by those skilled in the art, and the improvement direction of the present application is the number and distribution position of the Hall sensor 50, so the corresponding specific control principle is not described here.
[0064] Figure 7 A structure schematic view of a second embodiment of the motor detection assembly provided in the present application is provided. Figure 8 A cross-sectional schematic view of the second embodiment of the motor detection assembly provided in the present application is provided. Figure 9 A projection schematic view of the second embodiment of the motor detection assembly provided in the present application is provided.
[0065] Please refer to Figures 7 to 9 The difference between the second embodiment and the first embodiment includes that the number of the Hall sensors 50 is 2, and the two Hall sensors 50 are distributed at an interval of 90° around the axis of the rotor shaft 22. Exemplarily, the sensing surfaces of the two Hall sensors 50 are both parallel to the circuit board 40. The connecting lines between the geometric centers of the two Hall sensors 50 and the axis of the rotor shaft 22 (i.e., the dashed line X and the dashed line Y in the figure) are different by 90°.
[0066] In the embodiment, the magnetic member 30 can adopt a magnetic steel sheet or a magnetic ring. The projections of the two Hall sensors 50 on the axial direction of the rotor shaft 22 are both located in the magnetic member 30.
[0067] Figure 10 A waveform diagram of the output waveform of the first embodiment of the motor detection assembly provided in the present application is provided.
[0068] Please refer to Figure 10 When the magnetic member 30 rotates with the rotor shaft 22, an alternating magnetic field is generated, at this time, the two Hall sensors 50 are in a relatively static state relative to the magnetic member 30, that is, the Hall sensor 50, that is, both of the two Hall sensors 50 can sense the change of the magnetic field, so as to output a sine wave analog signal reflecting the change of the magnetic field. In this way, the control module can obtain the rotation angle of the rotor shaft 22 at a specified time according to the output result, and further calculate the rotation position and rotation speed of the rotor shaft 22 and other information.
[0069] The embodiment can realize the angle detection of the rotor shaft 22 by the output voltage of the two Hall sensors 50, has higher precision, lower hardware cost, simpler mechanism design, and reduced installation difficulty, and thus greatly improves production efficiency.
[0070] In another embodiment, the Hall sensor 50, the circuit board 40, and the magnetic piece 30 can also be arranged at the second end 223 of the rotor shaft 22. It can be understood that the Hall sensor 50, the circuit board 40, and the magnetic piece 30 provided in the present application can be arranged at the first end 222 or the second end 223 of the rotor shaft 22, so as to reduce the space occupation at the first end 222 or the second end 223, and adapt to the arrangement of various shell structures.
[0071] Figure 11 A structural schematic diagram of the massager provided in the present application is shown. Figure 12 An exploded schematic diagram of the massager provided in the present application is shown. Figure 13 A cross-sectional schematic diagram of the massager provided in the present application is shown.
[0072] Please refer to Figures 11 to 13 The present application also provides a massager 200. The massager 200 comprises a shell 60, a massaging body 70, a transmission assembly 80, and the motor detection assembly 100 in any one of the embodiments described above, wherein the motor detection assembly 100 in the first embodiment is taken as an example for illustration. The massaging body 70 is provided with a connecting rod 71, and the connecting rod 71 extends into the shell 60. The transmission assembly 80 is arranged in the shell 60, and the rotor shaft 22 is in transmission connection with the connecting rod 71 through the transmission assembly 80. When the rotor shaft 22 rotates, the rotor shaft 22 drives the connecting rod 71 to move through the transmission assembly 80, and the movement mode includes but is not limited to shaking and reciprocating movement.
[0073] For example, the massaging body 70 further comprises a massaging part 72 for contacting the human body, and the massaging part 72 is fixedly arranged at one end of the connecting rod 71, for applying a massaging force to the human body when the connecting rod 71 moves. In another embodiment, in order to facilitate the replacement of the massaging part 72 to adapt to different application scenarios, the massaging part 72 can be arranged in a detachable manner, i.e., the massaging part 72 is detachably connected to one end of the connecting rod 71.
[0074] Since the massaging part 72 is a part for contacting the human body, it can be made of soft material such as silica gel, or hard material such as nylon reinforced rubber, so as to have certain elasticity and hardness, and different materials can be selected according to different application scenarios, which is not limited in the present application.
[0075] Exemplarily, the shell 60 comprises a first shell 61 and a second shell 62, the second shell 62 is fixed to one side of the first shell 61, a first receiving cavity 611 is formed in the first shell 61, and a second receiving cavity 621 is formed between the second shell 62 and the first shell 61.
[0076] Exemplarily, the first shell 61 is a spliced combined shell structure composed of two shells. The first shell 61 is provided with a flexible limiting piece 612 at one end, the flexible limiting piece 612 wraps the connecting rod 71, and the first shell 61 limits the movement of the connecting rod 71 through the flexible limiting piece 612. The side surface of the first shell 61 is provided with a recessed part 613, and the second shell 62 is arranged on the recessed part 613 to form the second receiving cavity 621.
[0077] Exemplarily, the transmission assembly 80 and the motor 20 are arranged in the first receiving cavity 611, and the Hall sensor 50 and the circuit board 40 are arranged in the second receiving cavity 621. The first shell 61 is provided with a communication port 614 communicating the first receiving cavity 611 and the second receiving cavity 621, the communication port 614 penetrates the recessed part 613, and the fixed support 10 is embedded in the communication port 614, so that the fixed support 10 enters the first receiving cavity 611 and the second receiving cavity 621 respectively. The fixed support 10 is provided with a plurality of supporting legs 12, the plurality of supporting legs 12 are arranged at intervals around the fixed support 10, the supporting legs 12 are fixedly connected with the first shell 61, so that the installation stability of the fixed support 10 can be improved.
[0078] Exemplarily, the first shell 61 and the second shell 62 are detachably connected, and the detachable connection modes include but are not limited to bolting, clamping, interference fit and the like. By detaching the second shell 62, the second receiving cavity 621 can be opened, so that the Hall sensor 50 and the circuit board 40 can be maintained and repaired.
[0079] Figure 14 The structure schematic diagram of the motor and the transmission assembly provided in the application is shown. Figure 15 The exploded schematic diagram of the motor and the transmission assembly provided in the application is shown.
[0080] Please refer to Figure 14 and Figure 15 Exemplarily, the transmission assembly 80 comprises a rotating block 81, an eccentric shaft 82 and a driving rod 83. The rotating block 81 is coaxially fixed with the rotor shaft 22, and the eccentric shaft 82 is eccentrically arranged in the rotating block 81, that is, the center axis of the eccentric shaft 82 has a preset distance from the center axis of the rotor shaft 22. One end of the driving rod 83 is hingedly connected with the eccentric shaft 82, and the other end of the driving rod 83 is hingedly connected with the connecting rod 71.
[0081] When the motor 20 operates, the rotor shaft 22 drives the rotating block 81 to rotate, the eccentric shaft 82 follows the rotating block 81 to rotate to make a circular motion, at the same time, the eccentric shaft 82 and the driving rod 83 relatively rotate to drive the driving rod 83 to move back and forth, and then drive the connecting rod 71 to move back and forth, so as to realize the shaking or reciprocating movement of the massage part 72.
[0082] It should be noted that the motor detection mechanism of the present application can provide more accurate detection accuracy, which will provide more accurate control for the motion trajectory of the massage part 72.
[0083] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present 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 component 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 assembly 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 faces the circuit board (40) and the Hall sensor (50). 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 within 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).