Oscillating motor capable of providing feedback of output swing amplitude for use with electric toothbrush

Abstract

The present invention discloses a swing-type motor capable of feeding back output swing amplitude used in conjunction with an electric toothbrush, comprising a housing, an output shaft rotatably arranged in the housing, a rotor core arranged on the output shaft, a permanent magnet arranged in the rotor core, a stator core arranged on both sides of the rotor core respectively, a coil wound on the stator core, a power generation winding and a magnetic part, the power generation winding is connected to an external operation module, the operation module is arranged outside the housing and connected to the housing, the magnetic part is arranged close to the power generation winding, and the power generation winding and the magnetic part are arranged to move relative to each other. The structure is simple, the rotation amplitude of the output shaft can be effectively fed back, and the use effect of the overall structure is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric toothbrush parts, in particular to an oscillating motor capable of feeding back output swing amplitude and used in conjunction with an electric toothbrush. Background Art

[0002] Electric toothbrushes are a new product that has become popular in recent years and have set off a revolution in the field of oral health abroad. With the widespread popularity of electric toothbrushes in my country and the improvement of people's awareness of them, electric toothbrushes will also become an important member of public health products. Surveys show that compared with ordinary toothbrushes, electric toothbrushes are more scientific and effective. They can more thoroughly remove dental plaque, reduce gingivitis and gum bleeding. Electric toothbrushes use the rapid reciprocating rotation of the motor output shaft to make the brush head produce high-frequency vibrations, thereby instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. Currently, the motor in an electric toothbrush usually adopts an AC motor to achieve the left and right swing of the electric toothbrush head to achieve the purpose of teeth cleaning. The existing electric toothbrush motor usually includes a stator assembly, a shell and a rotor assembly. The rotor assembly includes a rotating shaft and a rotor core. The rotor core is fixedly connected to the rotating shaft. A bearing is provided on the rotating shaft. The rotating shaft is combined with the shell through the bearing to achieve reciprocating rotation of the rotating shaft. However, the existing motor lacks an output feedback mechanism and cannot well determine the rotation angle of the motor output shaft, making it difficult to adjust the output of the current electric toothbrush gear, reducing the use effect. At the same time, due to the lack of feedback mechanism, the development and use of subsequent toothbrushes are affected, reducing the user experience. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a swing motor capable of feeding back the output swing amplitude for use with an electric toothbrush. The motor has a simple structure and can effectively feed back the rotation amplitude of the output shaft, thereby effectively improving the use effect of the overall structure.

[0004] To achieve the above-mentioned purpose, the present invention provides a swinging motor with feedback output swing amplitude for use with an electric toothbrush, comprising a shell, an output shaft rotatably arranged in the shell, a rotor core arranged on the output shaft, a permanent magnet arranged in the rotor core, a stator core arranged on both sides of the rotor core of the shell, a coil wrapped around the stator core, and characterized in that: it also includes a power generation winding and a magnetic part, the power generation winding is connected to an external operation module, the magnetic part is arranged close to the power generation winding, and the power generation winding and the magnetic part are arranged to move relative to each other.

[0005] The beneficial effect of such a setting is: in such a setting, by setting the power generation winding and the magnetic part, the power generation winding and the magnetic part are set to move relative to each other, and the movement here refers to that one of the two moves and the other structure remains fixed. The power generation winding can be set on the output shaft, and the magnetic part can be set on the shell. When the output shaft rotates, the power generation winding thereon rotates accordingly. At the same time, a magnetic part is set nearby, and the magnetic part generates magnetic flux lines in the circumferential direction. At the same time, the winding is connected to the external operation module to form a conductive loop. As the power generation winding moves with the output shaft, the magnetic flux lines are cut, thereby generating an induced current, that is, the principle of magnetoelectricity, to form an electrical signal in the operation module. Similarly, the power generation winding can also be set on the shell shaft, and the magnetic part can be set on the output shaft. In this motor structure, the greater the rotation amplitude of the output shaft, the greater the current generated by the lead wire cutting the magnetic flux lines, the stronger the electrical signal, and the relationship between the two is sinusoidal, which is convenient for data output conversion, convenient for user use, and improves the use experience. At the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0006] As a further configuration of the present invention, a winding frame is also provided on the output shaft, the power generation winding is coiled on the winding frame, a wire is led out from the power generation winding, the power generation winding is connected to an external operation module through the wire, and the shell is provided with a plurality of insertion grooves along the circumference of the winding frame, and the magnetic part is plugged into and matched with the insertion groove.

[0007] The beneficial effect of such an arrangement is as follows: in such an arrangement, as the output shaft rotates, the winding frame thereon rotates accordingly, and at the same time, a wire is wound in the winding frame, and at the same time, a magnetic part is arranged circumferentially on the winding frame, and the magnetic part here is also a permanent magnet, which generates magnetic lines of force circumferentially, and at the same time, the winding is connected to an external computing module to form a conductive loop, and as the wire moves with the output shaft, the generating winding wire can cut the magnetic lines of force, thereby generating an induced current or voltage, that is, the principle of magnetoelectricity, and at the same time, the wire is wound on the winding frame, so that the number of turns cutting the magnetic lines of force is more, making the derived current more obvious, which is convenient for capturing and calculating, and the greater the rotation amplitude of the output shaft, the greater the induced current or voltage generated by the wire cutting the magnetic lines of force, and the stronger the electrical signal, and the relationship between the two changes linearly, which is convenient for data output conversion, convenient for real-time calculation of the swing amplitude of the shaft, convenient for controlling the swing amplitude, and improving the user experience, and at the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0008] As a further configuration of the present invention, the shell is split into a front shell and a rear shell, the output shaft is arranged through the front shell and the rear shell, the rotor core and the stator core are arranged in the front shell, and the winding frame and the magnetic parts are arranged on the rear shell.

[0009] The beneficial effect of such arrangement is that such arrangement reduces the mutual interference between the permanent magnets and the magnetic parts in the stator core in the front housing, avoids affecting the output effect of the overall structure, improves the reliability of the overall structure, and at the same time has a simple structure and is easy to implement.

[0010] As a further configuration of the present invention, a slot and a block are provided between the front shell and the rear shell, and the slot and the block are engaged with each other to form a fixed connection between the front shell and the rear shell, and the output shaft is separately provided to form a first rod and a second rod, and the first rod is rotatably provided in the front shell, and the rotor core is provided on the first rod, and the first rod is connected to the second rod through a coupling, and the second rod is rotatably provided in the rear shell, and the winding frame is provided on the second rod.

[0011] The beneficial effect of such arrangement is that it can be selected according to the needs of customers, and at the same time, it has a simple structure, is easy to implement, is easy to modularize production, and improves the reliability and adaptability of the product.

[0012] As a further configuration of the present invention, the power generation winding is arranged at the end position of the shell, a magnetic conductive plate is sleeved on the output shaft, the magnetic conductive plate is arranged on one end of the output shaft close to the power generation winding, and the magnetic part is arranged on the magnetic conductive plate.

[0013] The beneficial effect of such an arrangement is as follows: in such an arrangement, as the output shaft rotates, a magnetic conductive plate is arranged on it, and preferably, the magnetic conductive plate is provided with a permanent magnet, so that the permanent magnet is close to the side of the power generation winding and forms an air gap magnetic field with the magnetic conductive frame, and at the same time, as the output shaft rotates, the permanent magnet rotates accordingly, so that the power generation winding can cut the magnetic lines of force, and the power generation winding is connected to the external operation module to form a closed loop, and with the movement of the permanent magnet, an induced current or voltage is generated, that is, the principle of magnetoelectricity, and at the same time, the winding formed by coiling can increase the number of turns, so that the efficiency of cutting the magnetic lines of force is higher, thereby improving the intensity of the current or voltage output, and the greater the rotation amplitude of the output shaft, the greater the current or voltage generated by the power generation winding cutting the magnetic lines of force, and the stronger the electrical signal, and the relationship between the two changes linearly, which is convenient for data output conversion, convenient for user use, and improves the use experience, and at the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0014] As a further configuration of the present invention, a clamping step is formed at the position of the output shaft corresponding to the magnetic conductive plate, and the magnetic conductive plate is disposed in contact with the clamping step.

[0015] The beneficial effect of such arrangement is that such arrangement ensures that the magnetic conductive plate is installed in place, and further preferably, the connection between the output shaft and the magnetic conductive plate is arranged in the form of a square hole and a square shaft to ensure that the magnetic conductive plate does not rotate, thereby ensuring the smooth operation of the overall structure.

[0016] As a further configuration of the present invention, a magnetic conductive frame is arranged at the center of the power generation winding, and the magnetic conductive frame is arranged at the end of the shell.

[0017] The beneficial effect of this arrangement is that it closes the magnetic circuit generated by the permanent magnet, concentrates the magnetic field generated by the permanent magnet in the air gap magnetic field, greatly improves the efficiency of power generation, and makes the larger induced current or voltage generated when the shaft rotates easier to distinguish.

[0018] As a further configuration of the present invention, the power generation winding is arranged on the inner wall of the shell, the power generation winding is arranged close to the stator core, the rotor core is arranged longer than the stator core, and the magnetic part is arranged in a part of the rotor core that is longer than the stator core.

[0019] The beneficial effect of such an arrangement is as follows: with such an arrangement, due to the rotation of the output shaft, since a magnetic part is arranged in the rotor core thereon, magnetic flux lines are generated in the circumferential direction of the magnetic part, and at the same time, the two ends of the generating winding are respectively connected to the operation module to form a conductive loop. With the movement of the magnetic part, the generating winding can cut the magnetic flux lines. At the same time, the generating winding is connected to the detection circuit through the lead-out wire to form a closed loop, thereby generating an induced current, that is, the principle of magnetoelectricity, forming an electrical signal in the operation module and being captured by the detection circuit. At the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0020] As a further configuration of the present invention, the magnetic member is integrally configured with the permanent magnet.

[0021] The beneficial effects of such arrangement are: such arrangement saves more materials, facilitates installation and improves the use effect of the overall structure.

[0022] As a further configuration of the present invention, the power generation winding is coiled on the positioning iron core, the positioning iron core is fixedly connected to the inner wall of the shell, the positioning iron core is arranged in a T-shape, including a longitudinal section and a transverse section connected to each other, the longitudinal section is connected to the shell, the transverse section is arranged on one end of the longitudinal section close to the output shaft, and the power generation winding is coiled on the longitudinal section and abuts against the transverse section.

[0023] The beneficial effect of such arrangement is that, by winding the power generation winding on the positioning iron core, the efficiency of cutting the magnetic flux lines is higher, thereby improving the strength of telecommunication output and effectively improving the use effect of the overall structure. At the same time, the positioning iron core is arranged in a T shape, so that the power generation winding can be better connected to the positioning iron core, ensuring a stable position and not easy to fall out, and the structure is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the first embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the explosion structure of the first embodiment of the present invention;

[0026] Figure 3 It is a schematic cross-sectional structure diagram of a first embodiment of the present invention;

[0027] Figure 4 is a schematic cross-sectional structural diagram of a second embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the second embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the output shaft in the second embodiment of the present invention;

[0030] Figure 7 is a schematic cross-sectional structural diagram of a third embodiment of the present invention;

[0031] Figure 8 It is a schematic diagram of the internal structure of the third embodiment of the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the power generation winding in the third embodiment of the present invention. DETAILED DESCRIPTION

[0033] The first embodiment of the oscillating motor capable of feedback output swing amplitude used in conjunction with an electric toothbrush of the present invention is as follows: Figures 1 to 3 As shown: it includes a shell 1, a power generation winding 4 and a magnetic part 5, an output shaft 2 is rotatably arranged in the shell 1, a rotor core 3 is arranged on the output shaft 2, a permanent magnet 31 is arranged in the rotor core 3, the shell 1 is respectively provided with a stator core 6 on both sides of the rotor core 3, a coil is wrapped around the stator core 6, the power generation winding 4 is connected to an external operation module, the operation module is arranged outside the shell 1 and connected to the shell 1, the magnetic part 5 is arranged close to the power generation winding 4, and the power generation winding 4 and the magnetic part 5 are arranged to move relative to each other.

[0034] As a further configuration of the present embodiment, a winding frame 41 is further provided on the output shaft 2, the power generation winding 4 is wound on the winding frame 41, a wire is led out from the power generation winding 4, the power generation winding 4 is connected to an external operation module through the wire, a plurality of insertion grooves are provided on the shell 1 along the circumference of the winding frame 41, and the magnetic member 5 is plugged into the insertion groove. The beneficial effect of such an arrangement is as follows: in such an arrangement, as the output shaft rotates, the winding frame thereon rotates accordingly, and at the same time, a wire is wound in the winding frame, and at the same time, a magnetic part is arranged circumferentially on the winding frame, and the magnetic part here is also a permanent magnet, which generates magnetic lines of force circumferentially, and at the same time, the winding is connected to an external computing module to form a conductive loop, and as the wire moves with the output shaft, the generating winding wire can cut the magnetic lines of force, thereby generating an induced current or voltage, that is, the principle of magnetoelectricity, and at the same time, the wire is wound on the winding frame, so that the number of turns cutting the magnetic lines of force is more, making the derived current more obvious, which is convenient for capturing and calculating, and the greater the rotation amplitude of the output shaft, the greater the induced current or voltage generated by the wire cutting the magnetic lines of force, and the stronger the electrical signal, and the relationship between the two changes linearly, which is convenient for data output conversion, convenient for real-time calculation of the swing amplitude of the shaft, convenient for controlling the swing amplitude, and improving the user experience, and at the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0035] As a further configuration of this embodiment, the housing 1 is divided into a front housing 11 and a rear housing 12, the output shaft 2 is arranged through the front housing 11 and the rear housing 12, the rotor core 3 and the stator core 6 are arranged in the front housing 11, and the winding frame 41, the operation module and the magnetic member 5 are arranged on the rear housing 12. The beneficial effect of this configuration is that the mutual interference between the permanent magnet 31 and the magnetic member 5 in the stator core 6 in the front housing 11 is reduced, the output effect of the overall structure is avoided, the reliability of the overall structure is improved, and the structure is simple and easy to implement.

[0036] As a further configuration of this embodiment, a slot 121 and a block 111 are provided between the front housing 11 and the rear housing 12, and the slot 121 and the block 111 are engaged to form a fixed connection between the front housing 11 and the rear housing 12, and the output shaft 2 is divided into a first rod 21 and a second rod 22, and the first rod 21 is rotatably provided in the front housing 11, and the rotor core 3 is provided on the first rod 21, and the first rod 21 is connected to the second rod 22 through a coupling, and the second rod 22 is rotatably provided in the rear housing 12, and the winding frame 41 is provided on the second rod 22. The beneficial effect of such a configuration is that such a configuration can be selected according to the needs of customers, and at the same time, the structure is simple, easy to implement, and easy to modularize production, and the reliability and adaptability of the product are improved.

[0037] A second embodiment of the oscillating motor capable of feedback output swing amplitude used in conjunction with an electric toothbrush of the present invention is as follows: Figures 4 to 6 As shown: it includes a shell 1, an output shaft 2 is rotatably arranged in the shell 1, a rotor core 3 is arranged on the output shaft 2, a permanent magnet 31 is arranged in the rotor core 3, the shell 1 is provided with a stator core 6 on both sides of the rotor core 3, a coil is wrapped around the stator core 6, and also includes a power generation winding 4 and a magnetic part 5, the power generation winding 4 is connected to an external operation module, the operation module is arranged outside the shell 1 and connected to the shell 1, the magnetic part 5 is arranged close to the power generation winding 4, and the power generation winding 4 and the magnetic part 5 are arranged to move relative to each other.

[0038] As a further configuration of this embodiment, the power generation winding 4 is arranged at the end position of the shell 1, and a magnetic conductive plate 51 is sleeved on the output shaft 2. The magnetic conductive plate 51 is arranged on one end of the output shaft 2 close to the power generation winding 4, and the magnetic member 5 is arranged on the magnetic conductive plate 51.

[0039] The beneficial effect of such an arrangement is as follows: in such an arrangement, as the output shaft rotates, a magnetic conductive plate is arranged on it, and preferably, the magnetic conductive plate is provided with a permanent magnet, so that the permanent magnet is close to the side of the power generation winding and forms an air gap magnetic field with the magnetic conductive frame, and at the same time, as the output shaft rotates, the permanent magnet rotates accordingly, so that the power generation winding can cut the magnetic lines of force, and the power generation winding is connected to the external operation module to form a closed loop, and with the movement of the permanent magnet, an induced current or voltage is generated, that is, the principle of magnetoelectricity, and at the same time, the winding formed by coiling can increase the number of turns, so that the efficiency of cutting the magnetic lines of force is higher, thereby improving the intensity of the current or voltage output, and the greater the rotation amplitude of the output shaft, the greater the current or voltage generated by the power generation winding cutting the magnetic lines of force, and the stronger the electrical signal, and the relationship between the two changes linearly, which is convenient for data output conversion, convenient for user use, and improves the use experience, and at the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0040] As a further configuration of this embodiment, the output shaft 2 is formed with a clamping step at a position corresponding to the magnetic conductive plate 51, and the magnetic conductive plate 51 is set against the clamping step. The beneficial effect of this configuration is that it ensures that the magnetic conductive plate 51 is installed in place, and further preferably, the connection between the output shaft 2 and the magnetic conductive plate 51 is set in the form of a square hole and a square shaft, which ensures that the magnetic conductive plate 51 does not rotate and ensures the smooth operation of the overall structure.

[0041] As a further configuration of this embodiment, a magnetic conductive frame is provided at the center of the power generation winding 4, and the magnetic conductive frame is provided at the end of the housing 1. The beneficial effect of such configuration is that such configuration closes the magnetic circuit generated by the permanent magnet, so that the magnetic field generated by the permanent magnet is concentrated in the air gap magnetic field, greatly improving the efficiency of power generation, and making it easier to distinguish the larger induced current or voltage generated when the shaft rotates.

[0042] A third embodiment of the oscillating motor capable of providing feedback output swing amplitude for use with an electric toothbrush according to the present invention is as follows: Figures 7 to 9 As shown: it includes a shell 1, an output shaft 2 is rotatably arranged in the shell 1, a rotor core 3 is arranged on the output shaft 2, a permanent magnet 31 is arranged in the rotor core 3, the shell 1 is provided with a stator core 6 on both sides of the rotor core 3, a coil is wrapped around the stator core 6, and also includes a power generation winding 4 and a magnetic part 5, the power generation winding 4 is connected to an external operation module, the operation module is arranged outside the shell 1 and connected to the shell 1, the magnetic part 5 is arranged close to the power generation winding 4, and the power generation winding 4 and the magnetic part 5 are arranged to move relative to each other.

[0043] As a further configuration of this embodiment, the power generation winding 4 is arranged on the inner wall of the housing 1, the power generation winding 4 is arranged close to the stator core 6, the rotor core 3 is arranged longer than the stator core 6, and the magnetic part 5 is arranged in the part of the rotor core 3 that is longer than the stator core 6. The beneficial effect of such a configuration is that, due to the rotation of the output shaft 2, the rotor core 3 thereon is provided with the magnetic part 5, thereby generating magnetic flux lines in the circumferential direction of the magnetic part 5, and at the same time, the two ends of the power generation winding 4 are respectively connected to the operation module to form a conductive loop, and with the movement of the magnetic part 5, the power generation winding 4 can cut the magnetic flux lines, and at the same time, the power generation winding 4 is connected to the detection circuit by leading out the lead wire to form a closed loop, thereby generating an induced current, that is, the principle of magnetoelectricity, forming an electrical signal in the operation module and being captured by the detection circuit, and at the same time, the overall structure is simple, which is conducive to implementation, and effectively improves the use effect of the overall structure.

[0044] As a further configuration of this embodiment, the magnetic member 5 is integrally configured with the permanent magnet 31. The beneficial effect of such configuration is that such configuration saves more materials, facilitates installation, and improves the use effect of the overall structure.

[0045] As a further configuration of this embodiment, the power generation winding 4 is wound on the positioning core 7, and the positioning core 7 is fixedly connected to the inner wall of the shell 1. The positioning core 7 is arranged in a T-shape, including a longitudinal section 71 and a transverse section 72 connected to each other. The longitudinal section 71 is connected to the shell 1, and the transverse section 72 is arranged on the longitudinal section 71 near one end of the output shaft 2. The power generation winding 4 is wound on the longitudinal section 71 and abuts on the transverse section 72. The beneficial effect of such a configuration is that, by winding the power generation winding 4 on the positioning core 7, the efficiency of cutting the magnetic flux lines is higher, thereby improving the strength of the telecommunication output and effectively improving the use effect of the overall structure. At the same time, the positioning core 7 is arranged in a T-shape, so that the power generation winding 4 can be better connected to the positioning core 7, ensuring a stable position and not easy to fall out, and the structure is simple and easy to implement.

[0046] The above example is only one preferred specific example of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A swing motor capable of feedback output swing amplitude used in conjunction with an electric toothbrush, comprising a housing, an output shaft rotatably disposed in the housing, a rotor core disposed on the output shaft, a permanent magnet disposed in the rotor core, a stator core disposed on both sides of the rotor core of the housing, a coil wrapped around the stator core, characterized in that: It also includes a power generation winding and a magnetic part, the power generation winding is connected to an external operation module, the magnetic part is arranged close to the power generation winding, the power generation winding and the magnetic part are arranged to move relative to each other, a wire is led out from the power generation winding, the power generation winding is connected to the external operation module through the wire, the power generation winding is arranged on the inner wall of the shell, the power generation winding is arranged close to the stator core, the rotor core is longer than the stator core, and the magnetic part is arranged in a part of the rotor core that is longer than the stator core.

2. The swing motor capable of providing feedback output swing amplitude for use with an electric toothbrush according to claim 1, characterized in that: The housing is divided into a front housing and a rear housing, the output shaft is arranged through the front housing and the rear housing, and the rotor core and the stator core are arranged in the front housing.

3. The swing motor capable of providing feedback output swing amplitude for use with an electric toothbrush according to claim 2, characterized in that: A slot and a block are provided between the front housing and the rear housing, and the slot and the block are engaged with each other to form a fixed connection between the front housing and the rear housing. The output shaft is divided into a first rod and a second rod, and the first rod is rotatably arranged in the front housing. The rotor core is arranged on the first rod, and the first rod is connected to the second rod through a coupling, and the second rod is rotatably arranged in the rear housing.

4. The swing motor capable of providing feedback output swing amplitude for use with an electric toothbrush according to claim 1, characterized in that: The magnetic component is integrally arranged with the permanent magnet.

5. The swing motor capable of outputting feedback swing amplitude for use with an electric toothbrush according to claim 1 or 4, characterized in that: The power generation winding is coiled on the positioning iron core, and the positioning iron core is fixedly connected to the inner wall of the shell. The positioning iron core is arranged in a T shape, including a longitudinal section and a transverse section connected to each other. The longitudinal section is connected to the shell, and the transverse section is arranged on one end of the longitudinal section close to the output shaft. The power generation winding is coiled on the longitudinal section and abuts against the transverse section.

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