CN110538059A - Multi-coil structure for massager - Google Patents
Multi-coil structure for massager Download PDFInfo
- Publication number
- CN110538059A CN110538059A CN201910888216.9A CN201910888216A CN110538059A CN 110538059 A CN110538059 A CN 110538059A CN 201910888216 A CN201910888216 A CN 201910888216A CN 110538059 A CN110538059 A CN 110538059A
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- Prior art keywords
- coil
- port
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- magnet
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 239000000741 silica gel Substances 0.000 claims abstract description 15
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims description 41
- 230000005669 field effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H23/00—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms
- A61H23/02—Percussion or vibration massage, e.g. using supersonic vibration; Suction-vibration massage; Massage with moving diaphragms with electric or magnetic drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/12—Driving means
- A61H2201/1207—Driving means with electric or magnetic drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
- A61H2201/1436—Special crank assembly
Landscapes
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Pain & Pain Management (AREA)
- Physical Education & Sports Medicine (AREA)
- Rehabilitation Therapy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
The invention discloses a multi-coil structure for a massager, which comprises a main control circuit, a body, a power supply, a charging state detection port, a charging detection port, a power supply indication end, a power on/off key, an acceleration key and a deceleration key, wherein the power supply indication end is connected with the power supply indication end; the power supply indicating end, the power on/off key, the acceleration key and the deceleration key are arranged on the body; the body comprises a cavity, a connecting rod, a silica gel sucker, a magnet and a coil; the cavity is integrally cylindrical and hollow inside to form a cavity; the outer part of the cavity is provided with an annular baffle which has five layers, and the outer part of the cavity is divided into four annular rings by the annular baffle; the coils comprise a first coil, a second coil, a third coil and a fourth coil, and the four coils are sequentially arranged in the four annular rings outside the cavity from top to bottom; the invention is convenient to use, safe and reliable.
Description
Technical Field
the invention relates to the field of circuit equipment, in particular to a multi-coil structure for a massager.
background
with the development of society, the living standard of people is continuously improved, and the requirements on living quality are higher and higher. In daily work, due to the fact that the rhythm of life is accelerated, a posture is always kept unchanged during work, and physical quality of people is affected to a certain degree. The vibration massage rod can help people to eliminate fatigue and is better put into work and life.
The existing vibration massage rod adopts a crank-link mechanism, a motor drives a gear to run, and then the gear drives a crank-link to move, so that the noise generated by the link in the moving process is large, and the transmission efficiency is low.
Disclosure of Invention
the invention overcomes the defects of the prior art, and has convenient use and higher transmission efficiency.
The technical scheme of the invention is as follows:
A multi-coil structure for a massager comprises a main control circuit, a body, a power supply, a charging state detection port, a charging detection port, a power supply indication end, a power on/off key, an acceleration key and a deceleration key; the power supply indicating end, the power on/off key, the acceleration key and the deceleration key are arranged on the body; the body comprises a cavity, a connecting rod, a silica gel sucker, a magnet and a coil; the cavity is integrally cylindrical and hollow inside to form a cavity; the outer part of the cavity is provided with an annular baffle which has five layers, and the outer part of the cavity is divided into four annular rings by the annular baffle; the coils comprise a first coil, a second coil, a third coil and a fourth coil, and the four coils are sequentially arranged in the four annular rings outside the cavity from top to bottom; the upper part and the lower part of the cavity are provided with round tables; the magnets comprise an upper magnet, a middle magnet and a lower magnet; the upper magnet and the lower magnet are annular and are respectively arranged at the upper part of the cavity and at the inner side of the lower round platform; the middle magnet is cylindrical and hollow in the middle; the connecting rod is in a step-shaped cylindrical shape, and the upper end of the connecting rod is embedded in the hollow-out position in the middle of the middle magnet; the lower end of the connecting rod penetrates through the hollow-out part in the middle of the lower magnet and is connected with the upper end of the silica gel sucker; the silica gel sucker is in a three-layer step-shaped cylinder shape, the diameter of an upper end cylinder is the smallest, the diameter of a middle cylinder is larger than that of an upper end cylinder, and the diameter of a lower end cylinder is larger than that of a middle cylinder; the silica gel sucking disc is internally hollowed, and the hollowed shape is hemispherical.
furthermore, the main control circuit comprises a main control chip and an eleventh capacitor; one end of the eleventh capacitor is connected with an external power supply VBAT, the fourth port of the main control chip is connected, and the other end of the eleventh capacitor is grounded; the first port of the main control chip is connected with the charging state detection port, the second port is connected with the charging detection port, the third port is connected with the power supply indication end, the fifth port is connected with the power on/off key, the sixth port is connected with the acceleration key, the seventh port is connected with the deceleration key, the eighth to tenth ports, and the twelfth port is connected with the first coil, the second coil, the third coil and the fourth coil; the eleventh port is connected to ground.
Compared with the prior art, the invention has the advantages that:
1. The invention has reliable structure and long service life.
2. The invention controls the movement of the connecting rod through the magnet and the electrified coil, thereby being more intelligent and having lower noise.
3. the invention has the advantages of modular design, convenient maintenance, low production cost and convenient popularization and use.
Drawings
the accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the attached drawings
FIG. 1 is a schematic diagram of a charging circuit for a massager with a multi-coil structure according to the present invention;
FIG. 2 is a schematic diagram of a main control circuit of a multi-coil structure for a massager in accordance with the present invention;
FIG. 3 is a schematic diagram of a multi-coil key circuit for a massager in accordance with the present invention;
FIG. 4 is a schematic diagram of a multi-coil structure display circuit for a massager in accordance with the present invention;
FIG. 5 is a schematic exterior view of a multi-coil structure body for a massage device according to the present invention;
FIG. 6 is a cross-sectional view of a multi-coil structure body for a massage device according to the present invention;
FIG. 7 is a schematic diagram of a first motor circuit of a multi-coil structure for a massage device according to the present invention;
FIG. 8 is a schematic diagram of a second motor circuit for a multiple coil configuration for a massager in accordance with the present invention;
FIG. 9 is a schematic diagram of a third motor circuit of a multi-coil structure for a massage device according to the present invention;
FIG. 10 is a schematic diagram of a fourth motor circuit of a multi-coil structure for a massage device according to the present invention;
The figure is marked with: a first polarity capacitor C, a second capacitor C, a first resistor R, a third resistor R, a fourth resistor R, a fifth resistor R, a third polarity capacitor C, a charging chip U, a main control chip U, an eleventh capacitor C, a seventh resistor R, an eighth resistor R, a seventh capacitor C, a second diode D, a first field effect transistor Q, a ninth resistor R, a tenth resistor R, an eighth capacitor C, a third diode D, a second field effect transistor Q, an eleventh resistor R, a twelfth resistor R, a ninth capacitor C, a fourth diode D, a third field effect transistor Q, a thirteenth resistor R, a fourteenth resistor R, a tenth capacitor C, a fifth diode D, a fourth field effect transistor Q, a light emitting diode D, a sixteenth resistor R, a first switch S, a second switch S, a third switch S, a motor M, a cavity 1, a link 2, a silicone chuck 3, a magnet 4, and a coil 5.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
as shown in fig. 1 to 6, a multi-coil structure for a massager comprises a charging circuit, a main control circuit, a display circuit, a motor circuit, a key circuit, a charging state detection port, a charging detection port, a power indication terminal, an on/off key, an acceleration key, a deceleration key and a body. Wherein, power indicator, on/off key, acceleration key, speed reduction key all set up on the body surface, and the operator of being convenient for uses.
in the first embodiment, the body comprises a cavity 1, a connecting rod 2, a silica gel sucker 3, a magnet 4 and a coil 5. The cavity 1 is cylindrical and hollow inside to form a cavity. The outside of the cavity 1 is provided with five layers of annular baffles, the outside of the cavity is divided into four annular rings by the annular baffles, and the annular rings are used for fixing the coil 5. The coil 5 comprises a first coil, a second coil, a third coil and a fourth coil, and the four coils are sequentially arranged in four annular rings outside the cavity 1 from top to bottom. The upper part and the lower part of the cavity 1 are respectively provided with a circular truncated cone, and the joint of the circular truncated cone and the cavity 1 is provided with a clamping groove for fixing the magnet 4. The magnets 4 include an upper magnet, a middle magnet, and a lower magnet. The upper magnet and the lower magnet are circular rings, are respectively arranged at the upper part of the cavity 1 and at the inner side of the lower circular truncated cone and are embedded at the inner side of the circular truncated cone. The middle magnet is cylindrical and hollow in the middle. The connecting rod 2 is in a step-shaped cylindrical shape, and the upper end of the connecting rod is embedded in a hollow-out position in the middle of the middle magnet. The lower end of the connecting rod 2 penetrates through the hollow part in the middle of the lower magnet and is connected with the upper end of the silica gel sucker 3. The connecting rod 2 can move up and down along the cavity, so that the middle magnet is driven to move up and down. The silica gel sucker 3 is a three-layer stepped cylinder, the diameter of the upper end cylinder is the smallest, the diameter of the middle cylinder is larger than that of the upper end cylinder, and the diameter of the lower end cylinder is larger than that of the middle cylinder; the silica gel sucker 3 is hollow, and the hollow shape is hemispherical. When the silica gel sucker is used, the silica gel sucker 3 is tightly attached to the surface needing to be contacted, and the internal air is discharged, so that the condition of internal negative pressure is formed, and the tight attaching effect is ensured under the action of atmospheric pressure.
The charging circuit comprises a first polarity capacitor C1, a second capacitor C2, a first resistor R1, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a battery, a third polarity capacitor C3 and a charging chip U2. In this embodiment, the following parameters or models may be employed, but are not limited to: the specification of the first polar capacitor C1 is 4.7uF, the specification of the second capacitor C2 is 0.1uF, the resistance value of the third resistor R3 is 100 Komega, the resistance value of the fourth resistor R4 is 150 Komega, the charging chip U2 model TP4054, the resistance value of the fifth resistor R5 is 100 Komega, and the specification of the third polar capacitor C3 is 4.7 uF. The positive electrode of the first polar capacitor C1 is connected with a 5V external power supply and is connected with one end of the second capacitor C2 and one end of the third resistor R3. The negative electrode of the first polarity capacitor C1 is grounded and is connected with the other end of the second polarity capacitor C2. The other end of the second capacitor C2 is also connected to one end of a fourth resistor R4. The other end of the fourth resistor R4 is connected with the other end of the third resistor R3. A charging detection point is arranged between the third resistor R3 and the fourth resistor R4; the charging detection point can ensure the stable realization of the charging function and prevent the unstable current. One end of the third resistor R3 is connected to the fourth port of the charging chip U2. The other end of the fourth resistor R4 and the other end of the second capacitor C2 are connected with one end of the first resistor R1, and the other end of the first resistor R1 is connected with the fifth port of the charging chip U2. A third port of the charging chip U2 is connected with the anode of the battery, and one end of a fifth resistor R5 is connected; the second port of the charging chip U2 is connected with the negative electrode of the battery, and the first port of the charging chip U2 is connected with the other end of the fifth resistor R5; the positive electrode of the third polar capacitor C3 is connected with the positive electrode of the battery, and the negative electrode of the third polar capacitor C3 is connected with the negative electrode of the battery; the positive electrode of the battery is simultaneously connected with an external power supply VBAT, and the negative electrode of the battery is simultaneously grounded; the first port of the charging chip U2 is connected with the charging state detection port at the same time. The charging chip U2 can intelligently judge and adjust the charging condition and ensure the charging stability.
The main control circuit comprises a main control chip U1 and an eleventh capacitor C11. The master control chip U1 can adopt an SN8P2501D model, and the specification of an eleventh capacitor C11 is 4.7 uF. One end of the eleventh capacitor C11 is connected to the external power supply VBAT and the fourth port of the main control chip U1, and the other end is grounded. The first port of the main control chip U1 is connected with a charging state detection port, the second port is connected with a charging detection port, the third port is connected with a power supply indication end, the fifth port is connected with an on/off machine key, the sixth port is connected with an acceleration key, the seventh port is connected with a deceleration key, the eighth to tenth ports, the twelfth port is connected with the first coil, the second coil, the third coil and the fourth coil; the eleventh port is connected to ground. The key circuit comprises a first switch S1, a second switch S2, a third switch S3; one end of each of the first switch S1, the second switch S2 and the third switch S3 is connected with the acceleration key, the deceleration key and the on/off key respectively. The other ends of the first switch S1, the second switch S2 and the third switch S3 are grounded; the display circuit comprises a light emitting diode D1, a sixteenth resistor R16; the sixteenth resistor R16 may have a resistance of 10K Ω. The anode of the light-emitting diode D1 is connected with the power supply indicating end, and the cathode of the light-emitting diode D1 is connected with one end of a sixteenth resistor R16; the sixteenth resistor R16 is connected to ground at its other end. The main control circuit controls other modules.
During the in-service use, the different coils drive the vibration frequency difference of cavity 1, control different coils through main control chip U1, control certain coil or certain several coils and switch on or off to realize different frequencies, it is intelligent reliable.
Example two: as shown in fig. 7 to 10, the eighth to tenth ports of the main control chip U1 and the twelfth port are connected to the motor circuit. The motor circuit comprises a first motor circuit, a second motor circuit, a third motor circuit and a fourth motor circuit, the four sub-circuits have the same circuit structure, and a motor M is arranged. The motor M may drive the body, with the same function as the coil. The first motor circuit comprises a seventh resistor R7, an eighth resistor R8, a seventh capacitor C7, a second diode D2 and a first field effect transistor Q1. One end of the seventh resistor R7 is connected with the twelfth port of the main control chip U1, and the other end is connected with the eighth resistor R8 and the grid of the first field effect transistor Q1. By arranging the first field effect transistor Q1, the circuit can be better controlled. The other end of the eighth resistor R8 is grounded and connected with the source of the first field effect transistor Q1. The drain of the first fet Q1 is connected to the motor M, the anode of the second diode D2, and one end of the seventh capacitor C7. The other end of the motor M, the cathode of the second diode D2 and the other end of the seventh capacitor C7 are connected with the external power supply VBAT. The second motor circuit comprises a ninth resistor R9, a tenth resistor R10, an eighth capacitor C8, a third diode D3 and a second field effect transistor Q2. The third motor circuit comprises an eleventh resistor R11, a twelfth resistor R12, a ninth capacitor C9, a fourth diode D4 and a third field effect transistor Q3. The fourth motor circuit comprises a thirteenth resistor R13, a fourteenth resistor R14, a tenth capacitor C10, a fifth diode D5 and a fourth field effect transistor Q4. The second motor circuit is connected with the tenth port of the main control chip U1, the third motor circuit is connected with the ninth port of the main control chip U1, and the fourth motor circuit is connected with the eighth port of the main control chip U1. The seventh resistor R7, the ninth resistor R9, the eleventh resistor R11, the thirteenth resistor R13 may be a resistor of 1K Ω, the eighth resistor R8, the tenth resistor R10, the twelfth resistor R12, the fourteenth resistor R14 may be a resistor of 10K Ω, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10 may be 0.1uF in specification, the second diode D2, the third diode D3, the fourth diode D4 may be a 1N4148 type, the first fet Q1, the second fet Q2, the third fet Q3, and the fourth fet Q4 may be a 1N4148 type.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the spirit of the present invention, and these modifications and decorations should also be regarded as being within the scope of the present invention.
Claims (2)
1. A multi-coil structure for a massager is characterized by comprising a main control circuit and a body, wherein the main control circuit is connected with the body; the body comprises a cavity, a connecting rod, a silica gel sucker, a magnet and a coil; the cavity is integrally cylindrical and hollow inside to form a cavity; the outer part of the cavity is provided with an annular baffle which has five layers, and the outer part of the cavity is divided into four annular rings by the annular baffle; the coils comprise a first coil, a second coil, a third coil and a fourth coil, and the four coils are sequentially arranged in the four annular rings outside the cavity from top to bottom; the upper part and the lower part of the cavity are provided with round tables; the magnets comprise an upper magnet, a middle magnet and a lower magnet; the upper magnet and the lower magnet are annular and are respectively arranged at the upper part of the cavity and at the inner side of the lower round platform; the middle magnet is cylindrical and hollow in the middle; the connecting rod is in a step-shaped cylindrical shape, and the upper end of the connecting rod is embedded in the hollow-out position in the middle of the middle magnet; the lower end of the connecting rod penetrates through the hollow-out part in the middle of the lower magnet and is connected with the upper end of the silica gel sucker; the silica gel sucker is in a three-layer step-shaped cylinder shape, the diameter of an upper end cylinder is the smallest, the diameter of a middle cylinder is larger than that of an upper end cylinder, and the diameter of a lower end cylinder is larger than that of a middle cylinder; the silica gel sucking disc is internally hollowed, and the hollowed shape is hemispherical.
2. A multiple coil structure for a massager, as claimed in claim 1, wherein: the master control circuit comprises a master control chip and an eleventh capacitor; one end of the eleventh capacitor is connected with an external power supply VBAT, the fourth port of the main control chip is connected, and the other end of the eleventh capacitor is grounded; the first port of the main control chip is connected with the charging state detection port, the second port is connected with the charging detection port, the third port is connected with the power supply indication end, the fifth port is connected with the power on/off key, the sixth port is connected with the acceleration key, the seventh port is connected with the deceleration key, the eighth to tenth ports, and the twelfth port is connected with the first coil, the second coil, the third coil and the fourth coil; the eleventh port is connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910888216.9A CN110538059A (en) | 2019-09-19 | 2019-09-19 | Multi-coil structure for massager |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910888216.9A CN110538059A (en) | 2019-09-19 | 2019-09-19 | Multi-coil structure for massager |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110538059A true CN110538059A (en) | 2019-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910888216.9A Pending CN110538059A (en) | 2019-09-19 | 2019-09-19 | Multi-coil structure for massager |
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| Country | Link |
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| CN (1) | CN110538059A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200350522Y1 (en) * | 2004-02-13 | 2004-05-17 | 서정순 | Vibrator of solenoid type improving punction |
| CN1792022A (en) * | 2003-05-16 | 2006-06-21 | 松下电工株式会社 | Reciprocating linear drive actuator and electric toothbrush using the same |
| JP2011166893A (en) * | 2010-02-05 | 2011-08-25 | Onkyo Corp | Oscillating generator |
| CN105896708A (en) * | 2016-03-30 | 2016-08-24 | 河南师范大学 | Power-generating door system based on arc motion |
| CN110098716A (en) * | 2019-04-24 | 2019-08-06 | 深圳市华一传动技术有限公司 | Magnetosphere formula linear electric machine, electric device and massage machine |
| CN211095922U (en) * | 2019-09-19 | 2020-07-28 | 宁海县集美特电器有限公司 | Multi-coil structure for massager |
-
2019
- 2019-09-19 CN CN201910888216.9A patent/CN110538059A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792022A (en) * | 2003-05-16 | 2006-06-21 | 松下电工株式会社 | Reciprocating linear drive actuator and electric toothbrush using the same |
| KR200350522Y1 (en) * | 2004-02-13 | 2004-05-17 | 서정순 | Vibrator of solenoid type improving punction |
| JP2011166893A (en) * | 2010-02-05 | 2011-08-25 | Onkyo Corp | Oscillating generator |
| CN105896708A (en) * | 2016-03-30 | 2016-08-24 | 河南师范大学 | Power-generating door system based on arc motion |
| CN110098716A (en) * | 2019-04-24 | 2019-08-06 | 深圳市华一传动技术有限公司 | Magnetosphere formula linear electric machine, electric device and massage machine |
| CN211095922U (en) * | 2019-09-19 | 2020-07-28 | 宁海县集美特电器有限公司 | Multi-coil structure for massager |
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