Electromagnetic drive type sucking structure of massager

Abstract

The utility model relates to the massage device of massage device driving structure field's electromagnetic drive formula sucking structure, including fixed bolster and electric control massage subassembly, electromagnetic drive source is by the casing and sets up in the coil support and cylindrical magnetic jar of casing inside constitution, the periphery of coil support is wound with the electromagnetic coil, power supply and electromagnetic coil all with main control circuit board electric connection, coil support installs in the inside of magnetic jar along the opening of magnetic jar, and can along the opening direction of magnetic jar telescopic activity, the bottom of coil support is connected with the airbag for being driven by coil support and makes the massage mouth produce negative pressure telescopic activity. When working, coil support telescopic activity along the inside of magnetic jar, thereby drive airbag along the axial direction of magnetic jar and make reciprocating motion, make the inside of sucking mouth form negative pressure, realize the technical effect of noise reduction through non - contact magnetic force drive, can absorb the part high - frequency vibration energy that coil support does linear telescopic motion produces, ensure that can eliminate part mechanical vibration feeling when working.

Description

Technical Field

[0001] This utility model relates to the field of massager drive structure, specifically to an electromagnetically driven suction structure for a massager. Background Technology

[0002] The massagers all use several independent soft-touch massage heads to perform massage actions. The massage from the massage heads stimulates muscles and nerves to promote blood circulation and relieve fatigue and muscle soreness.

[0003] On April 18, 2024, the applicant filed a utility model patent application entitled "Press-type Stepless Speed ​​Adjustable Suction Massager," with publication number CN222323882U. This press-type stepless speed adjustable suction massager uses a motor-driven mechanical transmission structure to achieve a negative pressure function. The specific structure includes: the motor's output shaft is connected to the massage nozzle via a connecting rod; when the motor operates, it drives the connecting rod to reciprocate, thereby driving the massage nozzle to perform a suction massage action. The connecting rod also drives an elastic partition to rapidly reciprocate, creating a negative pressure inside the outer cavity, thus achieving the suction massage action.

[0004] The motor drive structure of the aforementioned utility model patent has the following inherent defects:

[0005] 1) Excessive noise (measured at 38-53 decibels): The motor generates mechanical vibration when rotating at high speed, and the rigid collision between the eccentric wheel and the connecting rod amplifies the impact noise, especially when the frequency exceeds 10 Hz.

[0006] 2) Noticeable vibration: The centrifugal force generated by the rotation of the eccentric wheel causes the whole machine to vibrate. Tests have shown that the acceleration is as high as 0.5-2.0 m / s², which causes discomfort when the user holds the machine.

[0007] 3) Severe mechanical losses: Friction in the transmission links (bearings, hinge points) consumes more than 30% of the input power, leading to easy wear and aging of components. Utility Model Content

[0008] The purpose of this invention is to solve the above defects and provide an electromagnetically driven suction structure for a massager. It is equipped with an electromagnetic drive source to drive the airbag to form negative pressure. The electromagnetic coil and the magnetic cylinder interact through non-contact magnetic force, eliminating the noise caused by motor rotation, eccentric wheel collision and connecting rod friction in the prior art.

[0009] The objective of this utility model is achieved through the following means:

[0010] The electromagnetically driven suction structure of the massager includes a fixed bracket and an electrically controlled massage component mounted on the fixed bracket. One end of the fixed bracket is connected to a massage nozzle, and the end of the massage nozzle away from the fixed bracket is a suction port for acting on the massaged area. The electrically controlled massage component includes a main control circuit board, a power supply, and an electromagnetic drive source. The electromagnetic drive source consists of a housing, a coil bracket, and a cylindrical magnetic cylinder disposed inside the housing. An electromagnetic coil is wound around the periphery of the coil bracket. The power supply and the electromagnetic coil are electrically connected to the main control circuit board. The magnetic cylinder is fixed to the upper part of the housing, with its opening facing the massage nozzle. The coil bracket is installed inside the magnetic cylinder along its opening and can extend and retract along the direction of the opening. The bottom of the coil bracket is connected to an airbag that is driven by the coil bracket to extend and retract, creating negative pressure in the massage nozzle. The opening of the airbag faces the suction port. The coil bracket is supported by the airbag. When the electromagnetic coil of the coil bracket is energized, it generates alternating attractive or repulsive forces that interact with the magnetic field of the magnetic cylinder, causing the coil bracket to drive the airbag to reciprocate along the axial direction of the magnetic cylinder, creating negative pressure inside the suction port.

[0011] Furthermore, the end of the housing near the massage nozzle has a travel opening for pairing and installing the airbag, and the edge of the airbag is pressed and fixed to the edge of the travel opening.

[0012] Furthermore, the edge of the travel opening is provided with a limiting hole, and the edge of the airbag is provided with a limiting block for mating and engaging with the limiting hole. The airbag and the coil bracket are connected by connecting posts that extend in opposite directions.

[0013] Furthermore, the magnetic cylinder includes a hollow cylinder body and a cylindrical magnet fixed inside the cylinder body. The magnet has an axial hole at its axis. The coil support has an active cavity inside that is opposite to the opening direction of the magnetic cylinder and is used to accommodate the magnet. The center of the active cavity is provided with an axial column for movably inserting into the axial hole.

[0014] Furthermore, the housing includes an upper housing and a lower housing, which are connected and fixed together by screws. The airbag is installed on the end face of the lower housing near the massage nozzle. The lower housing has wire-passing windows on both sides to facilitate the passage of wires.

[0015] Furthermore, the power source is a lithium battery, and both the lithium battery and the casing are fixed inside the fixed bracket, with an isolation pad provided between the lithium battery and the casing.

[0016] Furthermore, the isolation pad is a sponge pad used for cushioning and shock absorption.

[0017] Furthermore, the fixed bracket includes an upper fixed bracket and a lower fixed bracket. The main control circuit board and power supply are fixed in the upper fixed bracket, and the electromagnetic drive source is fixed in the lower fixed bracket. The lower fixed bracket has a connecting part for mating and connecting with the massage mouth at one end.

[0018] Furthermore, the connecting part includes a lower convex retaining ring and symmetrically arranged limiting protrusions on the left and right sides. The end of the massage nozzle near the lower fixed bracket is provided with an inner concave ring and a limiting groove. The inner concave ring is used to mate with the lower convex retaining ring, and the limiting groove is used to mate with the limiting protrusions.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1) During operation, the coil support extends and retracts along the inside of the magnetic cylinder, thereby driving the airbag to reciprocate along the axial direction of the magnetic cylinder, creating a negative pressure inside the suction port. The electromagnetic coil and the magnetic cylinder interact through non-contact magnetic force, which avoids the noise generated by motor rotation, eccentric wheel collision and connecting rod friction in the existing technology. The noise reduction effect is achieved through non-contact magnetic force drive.

[0021] 2) The coil support can extend and retract along the opening direction of the magnetic cylinder. The coil support has no physical contact with the magnetic cylinder, thus avoiding friction and vibration from the root of the connection structure. Moreover, the coil support has no centrifugal force when it moves in a straight line. The magnetic force is evenly applied to the entire coil support. In addition, the coil support is supported by an airbag. The airbag has a certain elasticity and can absorb some of the high-frequency vibration energy generated when the coil support moves in a straight line, ensuring that some mechanical vibration can be eliminated during operation.

[0022] 3) During operation, only the coil support and airbag are moving parts, and there are no bearings, connecting rods or other wear parts, which can reduce transmission loss and extend the service life of the product. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the electromagnetic drive suction structure of the massager of this utility model.

[0024] Figure 2 This is a top-view schematic diagram of the disassembled massage nozzle in the electromagnetic drive suction structure of the massager of this utility model.

[0025] Figure 3 This is a top-view diagram showing the disassembled massage nozzle in the electromagnetically driven suction structure of the massager of this utility model.

[0026] Figure 4 This is a top-view exploded view of the electromagnetic drive suction structure of the massager of this utility model.

[0027] Figure 5 This is an exploded view of the electromagnetic drive suction structure of the massager of this utility model from a bottom angle.

[0028] Figure 6This is a three-dimensional structural diagram of the electromagnetic drive source in the electromagnetic drive suction structure of the massager of this utility model.

[0029] Figure 7 This is a top-view structural breakdown of the electromagnetic drive source in the electromagnetic drive suction structure of the massager of this utility model.

[0030] Figure 8 The above-view diagram shows the electromagnetic drive source in the electromagnetic drive suction structure of the massager of this utility model.

[0031] Figure 9 This is a schematic diagram showing the coil support extending along the opening of the magnetic cylinder in the electromagnetic drive suction structure of the massager of this utility model.

[0032] Figure 10 This is a schematic diagram of the coil support retracted along the opening of the magnetic cylinder in the electromagnetic drive suction structure of the massager of this utility model.

[0033] Figure 11 The circuit diagram shows the electromagnetic drive suction structure of this utility model applied to a suction massager.

[0034] In the diagram, 1-massage nozzle, 101-suction port, 102-concave ring, 103-limiting groove, 2-electromagnetic drive source, 201-lower housing, 202-upper housing, 203-magnetic cylinder, 204-coil bracket, 205-magnet, 206-threading window.

[0035] 3-Lower fixed bracket, 301-Lower protruding retaining ring, 302-Limiting protrusion, 4-Upper fixed bracket, 5-Main control circuit board, 6-Lithium battery, 7-Sponge pad, 8-Airbag. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0038] In this embodiment, refer to Figures 1-10 The electromagnetic drive suction structure of the massager specifically implemented includes a fixed bracket and an electrically controlled massage component disposed on the fixed bracket. One end of the fixed bracket is connected to a massage nozzle 1. In this embodiment, the massage nozzle 1 is a detachable structure. The end of the massage nozzle 1 away from the fixed bracket is a suction port 101 for acting on the massaged area.

[0039] The electro-controlled massage component includes a main control circuit board 5, a power supply, and an electromagnetic drive source 2. The electromagnetic drive source 2 consists of a housing, a coil support 204 and a cylindrical magnetic cylinder 203 disposed inside the housing. An electromagnetic coil (not shown) is wound around the periphery of the coil support 204. The power supply and the electromagnetic coil are electrically connected to the main control circuit board 5. In this embodiment, the power supply is a lithium battery 6. The lithium battery 6 and the housing are both fixed inside the fixed support. An isolation pad is provided between the lithium battery 6 and the housing. Specifically, the isolation pad is a sponge pad 7 that can provide cushioning and shock absorption.

[0040] The magnetic cylinder 203 is fixed to the upper part of the housing. The opening of the magnetic cylinder 203 faces the massage mouth 1. The coil support 204 is installed inside the magnetic cylinder 203 along the opening of the magnetic cylinder 203 and can extend and retract along the opening direction of the magnetic cylinder 203. The bottom of the coil support 204 is connected to an airbag 8, which is driven by the coil support 204 to extend and retract, thereby creating negative pressure in the massage mouth 1. The opening of the airbag 8 faces the suction mouth 101. The coil support 204 is supported by the airbag 8. After the electromagnetic coil of the coil support 204 is energized, it generates an alternating attractive or repulsive force that interacts with the magnetic field of the magnetic cylinder 203, thereby causing the coil support 204 to drive the airbag 8 to reciprocate along the axial direction of the magnetic cylinder 203, creating negative pressure inside the suction mouth 101.

[0041] like Figures 6-8 As shown, the end of the housing near the massage nozzle 1 has a travel opening for mating and mounting the airbag 8. The edge of the airbag 8 is pressed and fixed to the edge of the travel opening. A limiting hole is provided at the edge of the travel opening, and a limiting block is provided at the edge of the airbag 8 for mating and engaging with the limiting hole. The airbag 8 and the coil bracket 204 are connected by connecting posts that extend in opposite directions. The connecting posts are all located in the middle area. When the coil bracket 204 performs direct telescopic movement, it can drive the airbag 8 to perform reciprocating movement, thereby creating a negative pressure inside the suction port 101.

[0042] like Figures 7-8As shown, the magnetic cylinder 203 includes a hollow cylinder body and a cylindrical magnet 205 fixed inside the cylinder body. The magnet 205 can be fixed to the inner top surface of the magnetic cylinder 203. An axial hole is provided at the axis of the magnet 205. The coil support 204 has an internal cavity with an opening opposite in direction to that of the magnetic cylinder 203, used to accommodate the magnet 205. An axial post is provided at the center of the cavity for movably inserting into the axial hole. The housing includes an upper housing 202 and a lower housing 201, which are connected and fixed by screws. A vertically downward extending fixing post is provided at the top center of the upper housing 202 for inserting into the center of the magnetic cylinder 203 and the magnet 205. An airbag 8 is installed on the end face of the lower housing 201 near the massage nozzle 1. Wire-passing windows 206 are provided on both sides of the lower housing 201 to facilitate the passage of wires. Two contact plates for welding wires are provided on one end face of the coil bracket 204. The terminals of the electromagnetic coil (not shown) can be welded to the corresponding contact plates, and then the wires led out along the wire window 206 are welded through the contact plates. The wires are then electrically connected to the main control circuit board 5.

[0043] like Figures 4-5 As shown, the fixing bracket includes an upper fixing bracket 4 and a lower fixing bracket 3. The main control circuit board 5 and the lithium battery 6 are fixed to the upper fixing bracket 4. The circuit board can also be fixed to the lower fixing bracket 3. The lower fixing bracket 3 has a limiting cavity for pairing and fixing the electromagnetic drive source 2. The electromagnetic drive source 2 is fixed in the limiting cavity of the lower fixing bracket 3. The end of the lower fixing bracket 3 near the massage nozzle 1 has a connecting part for pairing and connecting with the massage nozzle 1. Figure 2 and Figure 3 As shown. The connecting part includes a lower convex retaining ring 301 and a limiting protrusion 302 symmetrically arranged on the left and right. The end of the massage nozzle 1 near the lower fixed bracket 3 is provided with an inner concave ring 102 and a limiting groove 103. The inner concave ring 102 is used to match and connect with the lower convex retaining ring 301, and the limiting groove 103 is used to match and connect with the limiting protrusion 302.

[0044] In the electromagnetically driven suction structure of this embodiment, the key to ensuring the reciprocating motion of the coil support along the length of the magnet lies in the magnetic field interaction design between the electromagnetic coil and the magnet. The specific technical requirements and implementation data are as follows:

[0045] I. Core requirements for energizing an electromagnetic coil:

[0046] 1. The direction of the current changes alternately.

[0047] Control method: The main control circuit board outputs an 80Hz square wave alternating current (duty cycle 50%), and the current direction is periodically switched through the H-bridge drive circuit, reversing once every 6.25ms.

[0048] Relationship between current flow direction and magnetic force:

[0049] Forward current (0-6.25ms): Current flows in from the top of the coil → a magnetic field is generated at the top of the coil (S pole) → it repels the S pole of the magnet → the coil support extends towards the open end;

[0050] Reverse current (6.25-12.5ms): Current flows in from the lower end of the coil → a N pole magnetic field is generated at the upper end of the coil → it attracts the S pole of the magnet → the coil support shrinks into the magnet.

[0051] Current parameters:

[0052] The peak current is 0.37A (limited by the internal resistance of the H-bridge), and the waveform is a square wave (not a sine wave to reduce control complexity).

[0053] 2. Current and frequency matching

[0054] Frequency response: At 80Hz, the coil support needs to complete a 5mm stroke within 6.25ms → the average acceleration needs to reach 12.8m / s². 2 .

[0055] Compensation for insufficient current:

[0056] The measured current of 0.37A can only provide 0.31N of driving force, and the return motion needs to rely on the airbag pre-compression elastic reset (pre-compression amount 10%).

[0057] II. Requirements for the magnetic distribution of magnets:

[0058] 1. Magnetization direction

[0059] Axial magnetization: Cylindrical magnets (Φ15mm×7mm) must be magnetized strictly along their length, with one end as the N pole and the other end as the S pole.

[0060] Polarity orientation: When fixing the magnet, the S pole should face the opening end of the magnetic cylinder (i.e., facing the massage nozzle) to ensure that the magnetic field gradient is consistent with the direction of movement.

[0061] 2. Verification of magnetic field strength

[0062] Materials: Neodymium iron boron N52 (surface magnetic induction intensity ≥1.4T, approximately 0.55T at the air gap); Effective magnetic field calculation: When the gap between the magnet and the coil is 0.05mm, the working air gap magnetic induction intensity B≈0.5T (finite element simulation results).

[0063] 3. Key Parameter Table

[0064]

[0065] like Figure 11 As shown, the electromagnetically driven suction structure of this embodiment is applied to a suction massager. Figure 11 This is a circuit diagram for a suction massager.

[0066] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. An electromagnetically driven suction structure for a massager, comprising a fixed bracket and an electrically controlled massage component disposed on the fixed bracket, wherein one end of the fixed bracket is connected to a massage nozzle, and the end of the massage nozzle away from the fixed bracket is a suction port for acting on the massaged area, characterized in that: The electro-controlled massage assembly includes a main control circuit board, a power supply, and an electromagnetic drive source. The electromagnetic drive source consists of a housing, a coil support, and a cylindrical magnetic cylinder housed inside the housing. An electromagnetic coil is wound around the periphery of the coil support. Both the power supply and the electromagnetic coil are electrically connected to the main control circuit board. The magnetic cylinder is fixed to the upper part of the housing, with its opening facing the massage mouth. The coil support is installed inside the magnetic cylinder along its opening and can extend and retract along the direction of the opening. An airbag is connected to the bottom of the coil support to generate negative pressure in the massage mouth by being driven to extend and retract. The opening of the airbag faces the suction port. The coil support is supported by the airbag. When the electromagnetic coil of the coil support is energized, it generates alternating attractive or repulsive forces that interact with the magnetic field of the magnetic cylinder, thereby causing the coil support to drive the airbag to reciprocate along the axial direction of the magnetic cylinder, creating negative pressure inside the suction port.

2. The electromagnetically driven suction structure of the massager according to claim 1, characterized in that: The housing has a travel opening at one end near the massage nozzle for pairing and installing the airbag, and the edge of the airbag is pressed and fixed to the edge of the travel opening.

3. The electromagnetically driven suction structure of the massager according to claim 2, characterized in that: The edge of the travel opening is provided with a limiting hole, and the edge of the airbag is provided with a limiting block for mating and engaging with the limiting hole. The airbag and the coil bracket are connected by connecting posts that extend in opposite directions.

4. The electromagnetically driven suction structure of the massager according to claim 1, characterized in that: The magnetic cylinder includes a hollow cylinder body and a cylindrical magnet fixed inside the cylinder body. The magnet has an axial hole at its axis. The coil support has a movable cavity inside that is opposite to the opening direction of the magnetic cylinder and is used to accommodate the magnet. The center of the movable cavity is provided with an axial column for movably inserting into the axial hole.

5. The electromagnetically driven suction structure of the massager according to any one of claims 1-4, characterized in that: The housing includes an upper housing and a lower housing, which are connected and fixed together by screws. The airbag is installed on the end face of the lower housing near the massage nozzle. The lower housing has wire-passing windows on both sides to facilitate the passage of wires.

6. The electromagnetically driven suction structure of the massager according to any one of claims 1-4, characterized in that: The power source is a lithium battery. Both the lithium battery and the casing are fixed inside the fixed bracket, and an isolation pad is provided between the lithium battery and the casing.

7. The electromagnetically driven suction structure of the massager according to claim 6, characterized in that: The isolation pad is a sponge pad used for cushioning and shock absorption.

8. The electromagnetically driven suction structure of the massager according to any one of claims 1-4, characterized in that: The fixed bracket includes an upper fixed bracket and a lower fixed bracket. The main control circuit board and power supply are fixed in the upper fixed bracket, and the electromagnetic drive source is fixed in the lower fixed bracket. The lower fixed bracket has a connecting part for mating and connecting with the massage mouth at one end.

9. The electromagnetically driven suction structure of the massager according to claim 8, characterized in that: The connecting part includes a lower convex retaining ring and symmetrically arranged limiting protrusions on the left and right. The end of the massage nozzle near the lower fixed bracket is provided with an inner concave ring and a limiting groove. The inner concave ring is used to match and connect with the lower convex retaining ring, and the limiting groove is used to match and connect with the limiting protrusions.

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