A sonic motor with a single-piece magnetic steel and its processing technology

Abstract

The present invention discloses a sonic wave motor with a single-piece magnetic steel and its processing technology, which relates to the field of motor technology, including a coil assembly, which can generate magnetic force after being energized, and also includes: a cover assembly, which is arranged on the front and rear sides of the coil assembly, including an upper cover, which is arranged on the front side of the coil assembly; a lower cover, which is arranged on the rear side of the coil assembly; a rotor assembly, which can rotate under the magnetic force of the coil assembly, including a rotating frame, which is arranged inside the coil assembly; a first installation groove, which is opened in the middle of the rotating frame. The present invention replaces the need to install two pieces of magnetic steel in the traditional process by arranging a single piece of magnetic steel and metal sheets on both sides thereof, simplifies the installation process, reduces production costs, and improves production efficiency. It also achieves the effect of improving sealing by arranging auxiliary components, effectively preventing the sonic wave motor from getting water in, and can also lock the shaft body, thereby protecting the shaft body and the rotor assembly.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to a sonic wave motor with a single-piece magnetic steel and a processing technology thereof. Background Art

[0002] Sonic motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque. It can be used as a power source for electrical appliances or various machines, such as the motor core of an electric toothbrush. After the sonic motor is powered on, under the control of the control circuit, the sonic motor circulates to produce a high-frequency vibration, which in turn drives the toothbrush head to produce high-frequency vibration, instantly breaking down the toothpaste into fine foam, which can penetrate into various parts of the teeth to directly kill oral bacteria, block the formation of plaque, eliminate bad breath, shake off various types of dental plaque, and prevent dental plaque from being calcified by minerals in the mouth, thereby preventing the formation of dental calculus. It can also massage and slightly heat the oral tissue, inhibit periodontal inflammation and gingival bleeding, and prevent gingival atrophy.

[0003] A double-shrapnel sonic motor and its installation process with publication number CN117220464A include a housing, a rotor assembly and a coil assembly. The rotor assembly includes a rotor body and a double-shrapnel body connected to the rotor body. One end of the double-shrapnel body extends out of the rotor body and is fixedly connected to the bottom of the housing. The other end of the double-shrapnel body is embedded in the rotor body and is fixedly connected to the housing. The end of the rotor body away from the bottom of the housing is connected to an external shaft. The two sides of the rotor body have magnetic steel pole pieces. The external shaft is coaxially arranged with the center of the rotor body and the center of the double-shrapnel body. The above scheme has the following advantages: the structural form of the single-sided bearing and the shrapnel is eliminated, and the double-shrapnel body is replaced with a connection structure between the double-shrapnel body and the rotor, which reduces costs, is quick and convenient to install, and ensures the service life and swing accuracy of the sonic motor.

[0004] Although the above scheme achieves the effect of quick installation and ensuring swing accuracy, when it is used as a power source for an electric toothbrush, it cannot ensure the sealing between the shaft and the upper cover, causing moisture to enter the interior of the sonic motor and shortening its service life. At the same time, when the electric toothbrush head needs to be replaced, the user usually rotates the brush head while pulling it out to facilitate pulling out the brush head. The above scheme lacks a limit on the rotation angle of the shaft, and excessive rotation of the shaft by external force will cause damage to the rotor and the shaft.

[0005] Therefore, it is necessary to invent a sonic motor with a single-piece magnetic steel and its processing technology to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a sonic motor with a single-piece magnetic steel and a processing technology thereof to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sonic wave motor with a single-piece magnetic steel, including a coil assembly, which can generate magnetic force after being energized, and also includes: a cover assembly, which is arranged on the front and rear sides of the coil assembly, including an upper cover, which is arranged on the front side of the coil assembly; a lower cover, which is arranged on the rear side of the coil assembly; a rotor assembly, which can rotate under the magnetic force of the coil assembly, including a rotating frame, which is arranged inside the coil assembly; a first mounting groove, which is opened in the middle of the rotating frame; a magnetic steel, which is fixedly arranged inside the first mounting groove; an elastic torsion sheet, which is arranged between the rotating frame and the lower cover; a shaft , which is fixedly arranged on the front side of the rotating frame, and one side of it passes through the outside of the upper cover, and the shaft body and the upper cover are sealed and rotated; the auxiliary component is arranged between the upper cover and the lower cover, which can strengthen the seal between the shaft body and the upper cover and limit the shaft body, including a first air storage part, which is fixedly arranged inside the lower cover and sleeved on the outside of the elastic torsion piece; the second air storage part, which is fixedly arranged inside the upper cover and coaxially sleeved on the outside of the shaft body; two sealing rings are provided, and are coaxially arranged on the front and rear sides of the second air storage part respectively; a plurality of limiting grooves are provided, and are evenly opened on the outer periphery of the shaft body.

[0008] Preferably, the auxiliary component further includes: two first protrusions, which are respectively connected to the front and rear sides of the second air storage part; and a plurality of second protrusions, which are evenly connected to the inner side of the second air storage part.

[0009] Preferably, the auxiliary component also includes: an accommodating cavity, which is opened inside the upper cover, and the second air storage part and the sealing ring are both located inside the accommodating cavity; a retaining ring, which is fixedly arranged inside the accommodating cavity and is located between the two sealing rings, and the retaining ring is coaxially arranged between the second air storage part and the shaft body, and can support the second air storage part; through holes, which are evenly opened on the retaining ring, and the number is consistent with that of the second protrusion.

[0010] Preferably, the auxiliary component also includes: a first air duct, which is opened inside the lower cover and connected to the first air storage part; a second air duct, which is opened inside the upper cover and connected to the second air storage part; the first air storage part and the second air storage part are connected through the first air duct and the second air duct.

[0011] Preferably, the rotor assembly further includes: two second mounting grooves, which are symmetrically arranged on the upper and lower sides of the first mounting groove; and two metal sheets, which are respectively fixed inside the second mounting grooves on the corresponding sides.

[0012] Preferably, the rotor assembly also includes: a fixed block, which is arranged inside the lower cover; two slots, which are respectively opened on the rear side of the rotating frame and the front side of the fixed block, and the two ends of the elastic torsion piece are respectively inserted into the slots on the corresponding sides; a blocking cover, which is arranged on the rear side of the lower cover by bolts, and the blocking cover can limit the position of the fixed block.

[0013] Preferably, the rotor assembly further comprises a bearing, which is fixedly disposed inside the upper cover and coaxially sleeved on the outer side of the shaft body.

[0014] Preferably, the coil assembly includes: two iron core seats symmetrically arranged; an iron core arranged in the middle of the two iron core seats, and the iron core and the two iron core seats are integrally injection molded; a coil wound around the outer circumference of the iron core; the upper cover, the lower cover and the iron core seat are combined to form the outer shell of the sonic motor.

[0015] Preferably, it also includes a clamping assembly, which is used to clamp and fix the upper cover, the lower cover and the core seat, including: a plurality of clamping slots, which are symmetrically opened on both sides of the core seat; a plurality of clamping blocks, which are respectively fixedly set on both sides of the upper cover and the lower cover; a plurality of rivet columns, which are fixedly set around the bottom of the core seat; and a plurality of rivet holes, which are respectively opened on the bottom of the upper cover and the lower cover.

[0016] A process for processing a single-piece magnetic steel sonic motor is also provided, comprising the following steps:

[0017] Step 1: Injection mold the core seat and the core into one piece, and wind the coil around the core;

[0018] Step 2: Fix the bearing inside the upper cover, clamp the upper cover to the front side of the core seat through the clamping slot and the clamping block, and fix the two through the riveting column and the riveting hole;

[0019] Step 3: Install the magnet, shaft and metal sheet onto the rotating frame, and insert the assembled rotating frame into the core seat, with the shaft passing through the bearing and extending to the front side of the upper cover;

[0020] Step 4: Connect the lower cover to the rear side of the core seat through the card slot and the card block, and fix the two through the rivet columns and rivet holes;

[0021] Step 5: Insert the fixed block and the elastic twist piece that are plugged together into the lower cover from the rear side of the lower cover, and insert the front end of the elastic twist piece into the slot on the rotating frame, and finally install the sealing cover on the rear side of the lower cover with threads.

[0022] Technical effects and advantages of the present invention:

[0023] 1. The present invention uses the first air storage part, the second air storage part, the sealing ring and the first protrusion in coordination. When the sonic motor is working in a high-speed position, the first protrusion expands and squeezes the sealing ring, causing the sealing ring to increase radially, thereby further increasing the sealing performance between the sealing ring and the shaft body, preventing moisture from entering the interior of the sonic motor during the high-frequency movement of the shaft body, and extending the service life of the sonic motor.

[0024] 2. The present invention uses the first air storage part, the second air storage part, the limiting groove and the second protrusion in coordination. When the brush head of the electric toothbrush needs to be replaced, the second protrusion expands significantly and snaps into the corresponding limiting groove, thereby locking the shaft body, preventing the rotation angle of the shaft body and the rotor assembly from exceeding the limit angle during normal swing, preventing damage to the rotor assembly and the shaft body, and also ensuring the sealing between the sealing ring and the shaft body.

[0025] 3. The present invention provides a first air storage portion inside the lower cover, and the first air storage portion is sleeved on the outer side of the elastic torsion plate. The first air storage portion buffers the rotor assembly, reduces the noise generated by the high-frequency vibration of the rotor assembly, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0028] Figure 3 For the present invention Figure 2 A magnified schematic diagram of center A.

[0029] Figure 4 It is a schematic structural diagram of the retaining ring of the present invention.

[0030] Figure 5 It is a schematic structural diagram of the rotor assembly of the present invention.

[0031] Figure 6 It is a schematic structural diagram of the rotating frame of the present invention.

[0032] Figure 7 It is a schematic diagram of the explosion structure of the upper cover, the core seat and the lower cover of the present invention.

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the upper cover of the present invention.

[0034] Fig. 9 It is a schematic diagram of the cross-sectional structure of the lower cover of the present invention.

[0035] Fig.10 It is a schematic structural diagram of the coil assembly of the present invention.

[0036] Fig.11 It is a schematic diagram of the state when the second gas storage part of the present invention is at the first gas pressure.

[0037] Fig.12 It is a schematic diagram of the state when the second gas storage part of the present invention is at the second gas pressure.

[0038] Fig.13 It is a schematic diagram of the state when the second air storage unit of the present invention is at the third air pressure.

[0039] In the figure: 1. Coil assembly; 101. Core seat; 102. Core; 103. Coil; 2. Cover assembly; 201. Upper cover; 202. Lower cover; 3. Rotor assembly; 301. Rotating frame; 302. First mounting slot; 303. Magnetic steel; 304. Elastic torsion sheet; 305. Second mounting slot; 306. Metal sheet; 307. Fixing block; 308. Slot; 309. Sealing cover; 310. Bearing; 4. Axis body; 5. Auxiliary component; 501. First air storage part; 502. Second air storage part; 503. Sealing ring; 504. Limiting groove; 505. First protrusion; 506. Second protrusion; 507. Accommodating cavity; 508. Retaining ring; 509. Through hole; 510. First air channel; 511. Second air channel; 6. Snap-on component; 601. Slot; 602. Block; 603. Riveted column; 604. Riveted hole. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1, the present invention provides as follows Figures 1 to 13 The sonic motor with a single-piece magnetic steel can be used in an electric toothbrush as a power source of the electric toothbrush to drive the brush head to vibrate, comprising:

[0042] The coil assembly 1 can generate magnetic force after being energized. The coil assembly 1 repeatedly generates magnetic forces in opposite directions after being energized, so that the rotor assembly 3 repeatedly rotates around the central axis of the shaft body 4.

[0043] Specifically, the coil assembly 1 includes two core seats 101 symmetrically arranged; an iron core 102 arranged in the middle of the two core seats 101, and the iron core 102 and the two core seats 101 are integrally injection molded; a coil 103 wound around the outer periphery of the iron core 102, and the coil 103 is wound on the iron core 102 by a winding machine, which is a prior art and will not be described in detail here.

[0044] It should be noted that the upper cover 201, the lower cover 202 and the core seat 101 are combined to form the outer shell of the sonic motor.

[0045] The cover assembly 2 is arranged at the front and rear sides of the coil assembly 1 .

[0046] Specifically, the cover assembly 2 includes an upper cover 201 , which is disposed on the front side of the coil assembly 1 ; and a lower cover 202 , which is disposed on the rear side of the coil assembly 1 .

[0047] The rotor assembly 3 can rotate under the magnetic force of the coil assembly 1. When the rotor assembly 3 rotates, it drives the shaft body 4 to rotate synchronously.

[0048] Specifically, the rotor assembly 3 includes a rotating frame 301, which is arranged inside the coil assembly 1; a first mounting groove 302, which is opened in the middle of the rotating frame 301; a magnetic steel 303, which is fixedly arranged inside the first mounting groove 302, and the magnetic steel 303 can be fixed inside the first mounting groove 302 by bonding. After the coil assembly 1 is powered on, the magnetic force generated can drive the magnetic steel 303 to rotate; an elastic torsion piece 304, which is arranged between the rotating frame 301 and the lower cover 202, when the coil assembly 1 drives the magnetic steel 303 to rotate, The elastic torsion plate 304 will be twisted synchronously. When the coil assembly 1 no longer generates magnetic force on the magnet 303, the elastic torsion plate 304 will drive the rotating frame 301 and the magnet 303 to return to the initial state under the action of its own elastic force; there are two second mounting grooves 305, which are symmetrically opened on the upper and lower sides of the first mounting groove 302; there are two metal sheets 306, which are respectively fixed inside the second mounting grooves 305 on the corresponding sides, and the metal sheets 306 can be fixed inside the second mounting grooves 305 on the corresponding sides by bonding.

[0049] More specifically, the rotor assembly 3 also includes a fixed block 307, which is arranged inside the lower cover 202; two slots 308 are provided, and are respectively opened on the rear side of the rotating frame 301 and the front side of the fixed block 307, and the two ends of the elastic torsion piece 304 are respectively inserted into the slots 308 on the corresponding sides; a blocking cover 309, which is arranged on the rear side of the lower cover 202 by bolts, and the blocking cover 309 can limit the position of the fixed block 307; a bearing 310, which is fixedly arranged inside the upper cover 201 and coaxially sleeved on the outer side of the shaft body 4, and the bearing 310 can improve the stability of the shaft body 4 during rotation.

[0050] The shaft body 4 is fixedly disposed on the front side of the rotating frame 301 , and one side thereof penetrates to the outside of the upper cover 201 . The shaft body 4 and the upper cover 201 are sealed and rotatably disposed.

[0051] The auxiliary component 5 is arranged between the upper cover 201 and the lower cover 202 , and can strengthen the sealing between the shaft body 4 and the upper cover 201 and limit the shaft body 4 .

[0052] Specifically, the auxiliary component 5 includes a first air storage portion 501, which is fixedly arranged inside the lower cover 202 and sleeved on the outside of the elastic torsion piece 304; a second air storage portion 502, which is fixedly arranged inside the upper cover 201 and coaxially sleeved on the outside of the shaft body 4, and the first air storage portion 501 and the second air storage portion 502 are both made of elastic rubber material; two sealing rings 503 are provided, and are coaxially arranged on the front and rear sides of the second air storage portion 502, respectively, and a rotational seal is maintained between the sealing ring 503 and the shaft body 4; a plurality of limiting grooves 504 are provided, and are evenly opened on the outer periphery of the shaft body 4.

[0053] More specifically, the auxiliary component 5 also includes a first protrusion 505, which is provided with two and is connected and arranged on the front and rear sides of the second gas storage section 502 respectively; a second protrusion 506, which is provided with a plurality and is evenly connected and arranged on the inner side of the second gas storage section 502, the elastic coefficients of the first protrusion 505 and the sealing ring 503 are both smaller than the elastic coefficient of the second protrusion 506, that is, when the air pressure in the second gas storage section 502 increases, the first protrusion 505 will expand first and squeeze the sealing ring 503, causing the sealing ring 503 to deform, and after the first protrusion 505 expands and the sealing ring 503 deforms to the maximum extent, the second protrusion 506 expands; an accommodating cavity 507, which is opened inside the upper cover 201, and the second gas storage section 502 and the sealing ring 503 are both located inside the accommodating cavity 507; a retaining ring 508, which is fixedly arranged in the accommodating cavity The interior of the cavity 507 is located between the two sealing rings 503, and the retaining ring 508 is coaxially arranged between the second gas storage part 502 and the shaft body 4, which can support the second gas storage part 502, and when the air pressure in the second gas storage part 502 increases, the outer circular surface of the retaining ring 508 cooperates with the inner wall of the accommodating cavity 507 to limit the second gas storage part 502, forcing the first protrusion 505 and the second protrusion 506 to expand; through holes 509, which are evenly opened on the retaining ring 508, and the number is consistent with the second protrusion 506; the first air duct 510, which is opened in the interior of the lower cover 202 and is connected to the first gas storage part 501; the second air duct 511, which is opened in the interior of the upper cover 201 and is connected to the second gas storage part 502; the first gas storage part 501 and the second gas storage part 502 are connected through the first air duct 510 and the second air duct 511.

[0054] The clamping assembly 6 is used to clamp and fix the upper cover 201 , the lower cover 202 and the core seat 101 .

[0055] Specifically, the clamping assembly 6 includes a plurality of clamping slots 601, which are provided and symmetrically opened on both sides of the core seat 101; a plurality of clamping blocks 602, which are provided and respectively fixedly set on both sides of the upper cover 201 and the lower cover 202; a plurality of rivet columns 603, which are provided and fixedly set around the bottom of the core seat 101; a plurality of rivet holes 604, which are provided and respectively opened at the bottom of the upper cover 201 and the lower cover 202. The upper cover 201, the lower cover 202 and the core seat 101 are spliced ​​together through the clamping slots 601 and the clamping blocks 602, and the riveting columns 603 and the riveting holes 604 are riveted by a hot riveting machine to achieve riveting and fixing between the upper cover 201, the lower cover 202 and the core seat 101. The hot riveting machine is a prior art and will not be described in detail here.

[0056] In summary, during use of the electric toothbrush equipped with the sonic motor, its sonic motor is divided into two working gears, wherein the swing angle of the rotor assembly 3 is a in the low gear, and the swing angle of the rotor assembly 3 is b in the high gear, and a is less than b. At the same time, the maximum angle that the rotor assembly 3 can reach during normal swing is c, and c is greater than b.

[0057] When the sonic motor is in low gear, the swing angle of the rotor assembly 3 is a, and the elastic torsion piece 304 does not contact the first air storage part 501 during repeated twisting, and does not cause extrusion to the first air storage part 501. The first air storage part 501 and the second air storage part 502 are both in the initial state, and the second air storage part 502 is at the first air pressure. At this time, the state of the second air storage part 502 is as follows: Fig.11 As shown, the first protrusion 505 and the second protrusion 506 do not expand, the first protrusion 505 does not squeeze the sealing ring 503, and the second protrusion 506 does not contact the shaft body 4, so the sealing ring 503 and the shaft body 4 maintain a normal rotation seal.

[0058] When the sonic motor is in high gear, the swing angle of the rotor assembly 3 is b, and the elastic torsion plate 304 contacts the first air storage portion 501 during repeated twisting, and repeatedly squeezes the first air storage portion 501, so that the gas in the first air storage portion 501 enters the second air storage portion 502 through the first air channel 510 and the second air channel 511, and the air pressure in the second air storage portion 502 increases to the second air pressure state. At this time, the state of the second air storage portion 502 is as follows: Fig.12 As shown, the first protrusion 505 expands and squeezes the sealing ring 503, causing the sealing ring 503 to deform. The sealing ring 503 expands radially both inwardly and outwardly. At this time, the second protrusion 506 expands slightly but does not contact the shaft 4.

[0059] It should be noted that, since the oscillation frequency of the rotor assembly 3 under the magnetic force of the coil assembly 1 is extremely high when the sonic motor is operating in a high gear, the elastic torsion plate 304 is in a state of almost continuous squeezing of the first air storage portion 501, and the air pressure in the second air storage portion 502 is almost continuously in a state of second air pressure, so that the sealing ring 503 is in a state of continuous deformation, thereby continuously enhancing the sealing between the sealing ring 503 and the shaft body 4.

[0060] When the brush head of the electric toothbrush needs to be replaced, the user usually rotates the brush head while pulling it outward to facilitate pulling the brush head off the shaft 4. When an external force forces the shaft 4 to rotate, the swing angle of the rotor assembly 3 will exceed the limit angle c of its normal swing, which will cause damage to the rotor assembly 3 and the shaft 4.

[0061] Therefore, when the brush head of the electric toothbrush is replaced, the shaft body 4 drives the rotor assembly 3 to rotate. When the rotor assembly 3 rotates to the angle c, the elastic torsion piece 304 further squeezes the first air storage portion 501, so that more gas in the first air storage portion 501 enters the second air storage portion 502 through the first air channel 510 and the second air channel 511, and the air pressure in the second air storage portion 502 increases to the third air pressure state. At this time, the state of the second air storage portion 502 is as follows: Fig.13 As shown, at this time, the shaft body 4 rotates to the position corresponding to the limiting groove 504 and the second protrusion 506, the first protrusion 505 expands and squeezes the sealing ring 503, causing the sealing ring 503 to deform, further increasing the sealing between the sealing ring 503 and the shaft body 4, and the second protrusion 506 expands significantly and extends through the through hole 509 to the corresponding limiting groove 504.

[0062] Through the coordinated use of the first air storage section 501, the second air storage section 502, the sealing ring 503 and the first protrusion 505, when the sonic motor is working in a high-speed position, the first air storage section 501 is repeatedly squeezed by the elastic torsion plate 304, the air pressure in the second air storage section 502 increases to a second air pressure state, and the first protrusion 505 expands and squeezes the sealing ring 503, causing the sealing ring 503 to expand radially, thereby further increasing the sealing between the sealing ring 503 and the shaft body 4, preventing moisture from entering the interior of the sonic motor during the high-frequency movement of the shaft body 4, and extending the service life of the sonic motor.

[0063] Through the coordinated use of the first air storage section 501, the second air storage section 502, the limiting groove 504 and the second protrusion 506, when the brush head of the electric toothbrush needs to be replaced, the first air storage section 501 is further squeezed by the elastic torsion plate 304, the air pressure in the second air storage section 502 increases to the third air pressure state, and the second protrusion 506 expands significantly and is clamped in the corresponding limiting groove 504. Through the clamping connection between the second protrusion 506 and the limiting groove 504, the shaft body 4 is locked to prevent the rotation angle of the shaft body 4 and the rotor assembly 3 from exceeding the limit angle c during normal swing, thereby avoiding damage to the rotor assembly 3 and the shaft body 4, extending the service life of the rotor assembly 3 and the shaft body 4, and also ensuring the sealing between the sealing ring 503 and the shaft body 4.

[0064] By setting a first air storage portion 501 inside the lower cover 202, and the first air storage portion 501 is sleeved on the outside of the elastic torsion piece 304, the first air storage portion 501 buffers the rotor assembly 3, thereby solving the problem of high-frequency vibration of the rotor assembly 3 causing large noise when the traditional electric toothbrush is in a high-end working process, and improving the user experience.

[0065] By installing a single piece of magnetic steel 303 in the middle of the rotating frame 301 and installing metal sheets 306 on both sides of the magnetic steel 303, the need to install magnetic steel 303 on both sides of the rotor body in the traditional process is replaced, the installation process of the rotor assembly 3 is simplified, the production cost is reduced, and the production efficiency is improved.

[0066] Embodiment 2, the present invention also provides a process for processing a single-piece magnetic steel sonic motor, comprising the following steps:

[0067] Step 1: Injection mold the core base 101 and the core 102 into one piece, and wind the coil 103 around the core 102;

[0068] Step 2: fix the bearing 310 inside the upper cover 201, clamp the upper cover 201 to the front side of the core seat 101 through the clamping groove 601 and the clamping block 602, and fix the two through the riveting column 603 and the riveting hole 604;

[0069] Step 3: Install the magnetic steel 303, the shaft 4 and the metal sheet 306 on the rotating frame 301, and insert the assembled rotating frame 301 into the core base 101, and the shaft 4 passes through the bearing 310 and extends to the front side of the upper cover 201;

[0070] Step 4: snap the lower cover 202 to the rear side of the core base 101 through the snap slot 601 and the snap block 602, and fix the two together through the riveting column 603 and the riveting hole 604;

[0071] Step 5: Insert the fixed block 307 and the elastic twist piece 304 connected together into the lower cover 202 from the rear side of the lower cover 202, and insert the front end of the elastic twist piece 304 into the slot 308 on the rotating frame 301, and finally thread the blocking cover 309 on the rear side of the lower cover 202.

[0072] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sonic motor with a single-piece magnetic steel, including a coil assembly, capable of generating magnetic force after being energized, characterized in that: Also includes: The cover assembly is arranged at the front and rear sides of the coil assembly, and comprises: An upper cover, which is arranged on the front side of the coil assembly; A lower cover, which is arranged on the rear side of the coil assembly; The rotor assembly is capable of rotating under the magnetic force of the coil assembly, and comprises: A rotating frame, which is arranged inside the coil assembly; A first mounting groove is provided in the middle of the rotating frame; A magnetic steel fixedly disposed inside the first mounting groove; An elastic twisting piece, which is arranged between the rotating frame and the lower cover; A shaft body, which is fixedly arranged on the front side of the rotating frame, and one side of which penetrates to the outside of the upper cover, and the shaft body and the upper cover are sealed and rotatably arranged; The auxiliary component is arranged between the upper cover and the lower cover, and can strengthen the seal between the shaft body and the upper cover and limit the shaft body, including: A first air storage portion, which is fixedly disposed inside the lower cover and sleeved on the outer side of the elastic torsion sheet; A second gas storage portion, which is fixedly disposed inside the upper cover and coaxially sleeved on the outer side of the shaft body; Two sealing rings are provided and are coaxially arranged on the front and rear sides of the second gas storage part respectively; A plurality of limiting grooves are provided and are evenly arranged on the outer circumference of the shaft body; Two first protrusions are provided and are respectively connected to the front and rear sides of the second gas storage part. The first protrusions expand and squeeze the sealing ring, causing the sealing ring to deform. A plurality of second protrusions are provided and are evenly connected and arranged on the inner side of the second air storage portion. The second protrusions are engaged with the limiting grooves to lock the shaft.

2. The sonic motor with a single-piece magnetic steel according to claim 1, characterized in that: The auxiliary components also include: An accommodating cavity is opened inside the upper cover, and the second air storage portion and the sealing ring are both located inside the accommodating cavity; A retaining ring, which is fixedly arranged inside the accommodating cavity and located between the two sealing rings, and the retaining ring is coaxially arranged between the second gas storage part and the shaft body, and can support the second gas storage part; Through holes are evenly formed on the retaining ring, and the number of the through holes is consistent with that of the second protrusion.

3. The sonic motor with a single-piece magnetic steel according to claim 2, characterized in that: The auxiliary components also include: a first air passage, which is opened inside the lower cover and communicated with the first air storage portion; a second air passage, which is opened inside the upper cover and communicated with the second air storage part; The first air storage part and the second air storage part are connected through the first air channel and the second air channel.

4. The single-piece magnetic sonic motor according to claim 3, characterized in that: The rotor assembly further comprises: Two second mounting grooves are provided and are symmetrically arranged on the upper and lower sides of the first mounting groove; Two metal sheets are provided and are respectively fixedly arranged inside the second installation grooves on the corresponding sides.

5. The sonic motor with a single-piece magnetic steel according to claim 4, characterized in that: The rotor assembly further comprises: A fixing block, which is arranged inside the lower cover; Two slots are provided and are respectively opened on the rear side of the rotating frame and the front side of the fixed block, and the two ends of the elastic twisting piece are respectively inserted into the slots on the corresponding sides; The blocking cover is arranged on the rear side of the lower cover by means of bolts, and the blocking cover can limit the position of the fixing block.

6. The sonic motor with a single-piece magnetic steel according to claim 5, characterized in that: The rotor assembly also includes a bearing, which is fixedly arranged inside the upper cover and coaxially sleeved on the outer side of the shaft body.

7. The sonic motor with a single-piece magnetic steel according to claim 6, characterized in that: The coil assembly comprises: The core seat has two symmetrically arranged ones; The iron core is arranged in the middle of the two iron core seats, and the iron core and the two iron core seats are integrally injection molded; A coil, which is wound around the outer periphery of the iron core; The upper cover, the lower cover and the iron core seat are combined to form the outer shell of the sonic motor.

8. The sonic motor with a single-piece magnetic steel according to claim 7, characterized in that: It also includes a clamping assembly, which is used to clamp and fix the upper cover, the lower cover and the core seat, including: A plurality of card slots are provided and symmetrically opened on both sides of the core seat; A plurality of card blocks are provided and are respectively fixedly arranged on both sides of the upper cover and the lower cover; A plurality of riveted columns are provided and fixedly arranged around the bottom of the core seat; A plurality of riveting holes are provided and are respectively opened at the bottom of the upper cover and the lower cover.

9. A processing technology for a single-piece magnetic steel sonic motor, applied to a single-piece magnetic steel sonic motor as claimed in claim 8, characterized in that: The following steps are involved: Step 1: Injection mold the core seat and the core into one piece, and wind the coil around the core; Step 2: Fix the bearing inside the upper cover, clamp the upper cover to the front side of the core seat through the clamping slot and the clamping block, and fix the two through the riveting column and the riveting hole; Step 3: Install the magnet, shaft and metal sheet onto the rotating frame, and insert the assembled rotating frame into the core seat, with the shaft passing through the bearing and extending to the front side of the upper cover; Step 4: Connect the lower cover to the rear side of the core seat through the card slot and the card block, and fix the two through the rivet columns and rivet holes; Step 5: Insert the fixed block and the elastic twist piece that are plugged together into the lower cover from the rear side of the lower cover, and insert the front end of the elastic twist piece into the slot on the rotating frame, and finally install the sealing cover on the rear side of the lower cover with threads.

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