Portable essential oil massage device

Abstract

This utility model discloses a portable essential oil massage device, belonging to the technical field of massage therapy devices, which solves the problems of inconvenient essential oil delivery and limited functionality in existing massage devices. The portable essential oil massage device includes a main body and a replaceable massage head. The bottom center of the main body has an insertion hole with two axial protrusions, and an essential oil chamber inside to hold an essential oil bottle. An oil guide tube passes through the top cap of the essential oil bottle and connects to a miniature solenoid valve. A miniature vibration motor with its axis perpendicular to the bottom surface is fixedly installed inside the main body via a shock-absorbing silicone pad. The top insert of the replaceable massage head has a groove matching the protrusions and an oil guide cavity connecting to the bottom micro-hole. The bottom surface of the main body and the top surface of the massage head are magnetically connected by an annular magnetic clasp. Through the synergistic action of the vibration motor and the magnetic insertion structure, the device achieves rapid massage head replacement, precise essential oil delivery, and multi-dimensional vibration massage functions. The unique effects of aromatic essential oils, combined with massage, accelerate blood circulation, promote skin absorption, and enhance the overall effect.

Description

Technical Field

[0001] This utility model relates to the field of massage therapy devices. More specifically, this utility model relates to a portable essential oil massage device. Background Technology

[0002] In today's health and massage industry, people's demand for massage tools is becoming increasingly diversified. Traditional massage methods mainly rely on manual labor, which not only consumes a lot of physical strength and time, but also results in varying degrees of effectiveness depending on the massage therapist's technique and pressure. With the development of technology, various massage devices have emerged, providing people with a more convenient and efficient massage experience.

[0003] However, existing massage devices still have some shortcomings in practical use. For example, some massage devices are limited in function, only providing simple massage movements, and cannot meet people's diverse massage needs. When performing essential oil massage, it is necessary to manually add essential oil, which is cumbersome and makes it difficult to control the amount and evenness of the essential oil. This not only affects the massage effect but may also lead to waste of essential oil.

[0004] Furthermore, existing massage devices also have certain issues regarding portability. Some large massage devices are bulky and heavy, making them inconvenient to carry and use, limiting their application to fixed locations. While some small, portable massage devices are easy to carry, their functionality and performance often cannot compare with larger massage devices.

[0005] Existing massage devices also have some shortcomings in terms of temperature regulation. Some massage devices lack effective temperature regulation functions, failing to adjust the temperature according to different massage needs and user preferences, thus affecting the comfort of the massage process. Even if some products have temperature regulation functions, the adjustment methods are not flexible enough, and the temperature control is not precise enough, making it difficult to achieve the ideal massage effect.

[0006] Meanwhile, existing massage devices also have shortcomings in the design of their massage heads. Most massage heads are fixed and non-replaceable, unable to be changed according to different massage areas and needs, thus limiting the targeted nature and effectiveness of the massage. Furthermore, some massage heads are made of inadequate materials and are poorly designed, potentially causing discomfort or even damage to the skin upon contact.

[0007] Solving these problems also encountered numerous difficulties. Designing multifunctional massage devices requires integrating multiple functions within a limited space, which places high demands on the device's structural design and layout. Achieving precise control and application of essential oils necessitates the development of suitable oil guiding and dispensing devices, while also considering the stability and reliability of these devices. Improving the portability of massage devices requires minimizing their size and weight while maintaining functionality and performance, necessitating continuous innovation and optimization in material selection and process design. Utility Model Content

[0008] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0009] Another objective of this invention is to provide a portable essential oil massage device that solves the problems of inconvenience in using essential oils in existing massage devices, difficulty in accurately controlling the dosage, and the inability of a single temperature adjustment module to adapt to alternating hot and cold care needs.

[0010] To achieve these objectives and other advantages according to the present invention, a portable essential oil massage device is provided, comprising:

[0011] The main body has an insertion hole at the center of its bottom. The side wall of the insertion hole has two axially extending convex ridges. The interior of the main body has an essential oil compartment for holding an essential oil bottle. The top of the essential oil bottle is screwed with a cap. The cap is sealed with an oil guide tube. One end of the oil guide tube extends into the essential oil bottle, and the other end exits sealed from the top of the insertion hole. A miniature solenoid valve is connected and installed on the oil guide tube. A miniature vibration motor is also fixedly installed in the main body through a shock-absorbing silicone pad. The axis of the miniature vibration motor is perpendicular to the bottom surface of the main body.

[0012] A replaceable massage head has a plug at the center of its top that can be matched and inserted into the socket. The sidewall of the plug has two grooves that extend axially and can be matched and accommodated by corresponding protrusions. The top of the plug has an opening for the outer end of the oil guide tube to extend into. The interior of the replaceable massage head has an oil guide cavity that communicates with the opening. The bottom of the replaceable massage head has multiple microholes that communicate with the oil guide cavity.

[0013] The bottom surface of the main body and the top surface of each replaceable massage head are provided with matching annular magnetic plates.

[0014] Preferably, the main body is further provided with a temperature control cavity, in which a semiconductor cooling chip, a PTC heating film, and two parallel metal heat-conducting plates are installed. The cold end of the semiconductor cooling chip is fixedly connected to one of the metal heat-conducting plates, and the hot end is connected to a heat dissipation substrate. The PTC heating film is fixedly connected to the other metal heat-conducting plate. The free ends of the two metal heat-conducting plates are sealed and pass through the temperature control cavity and extend vertically to fit and be fixed to the outer side wall of the two protruding ridges. The heat dissipation substrate is sealed and passes through the temperature control cavity, and its free end is welded with heat dissipation fins. A miniature axial fan is fixedly installed near the heat dissipation fins, and its air outlet is provided with ventilation holes corresponding to the side wall of the main body.

[0015] The semiconductor cooling chip, PTC heating film, miniature axial fan, miniature solenoid valve, and miniature vibration motor are all connected to the power supply.

[0016] Preferably, the replaceable massage head is made of a thermally conductive metal material.

[0017] Preferably, the replaceable massage head includes a smooth massage head, a scraping massage head, and a raised dot massage head. The bottom of the smooth massage head is smooth, the bottom of the scraping massage head is provided with multiple scraping ridges, and the bottom of the raised dot massage head is provided with multiple raised dots.

[0018] Preferably, a closed door is hinged to the outer wall of the main body at the corresponding position of the essential oil container.

[0019] Preferably, the top of the plug-in is provided with an annular sealing gasket.

[0020] Preferably, the pore size of the micropores is 0.1~0.3mm.

[0021] Preferably, the inner bottom wall of the oil guiding cavity is covered with an oleophobic filter screen with a mesh diameter of 0.03~0.05mm.

[0022] Preferably, a handle is fixedly connected to one side of the body.

[0023] This utility model has at least the following beneficial effects:

[0024] First, the portable essential oil massage device of this utility model can precisely control the delivery of essential oil through a micro solenoid valve, avoiding waste and uneven application. Combined with a micro vibration motor and shock-absorbing silicone pads, it increases the vibration massage function and enhances the massage effect while reducing the impact of vibration on internal components, ensuring the stability and reliability of the device. A temperature control chamber, combined with components such as a semiconductor cooling chip and a PTC heating film, enables temperature regulation of the massage head. Users can adjust the temperature as needed to improve comfort. Heat dissipation fins and a micro axial fan solve heat dissipation problems and extend the device's lifespan. The replaceable massage head, made of thermally conductive metal, can quickly conduct temperature and maintain stability, further optimizing the massage experience. Multiple massage head designs, such as smooth, scraping, and raised-dot shapes, meet the diverse needs of different users and body parts, improving the device's applicability. A hinged, closed door on the outer wall of the main body facilitates the replacement and replenishment of the essential oil bottle and ensures the airtightness of the essential oil compartment, which is beneficial for essential oil preservation. A ring-shaped sealing gasket at the top of the insert enhances the connection seal, preventing essential oil leakage and avoiding damage to the environment and internal components. (0.1~0.3mm) The micropores ensure that the essential oil flows out at the appropriate speed, improving efficiency and massage comfort; the oleophobic filter on the bottom wall of the oil guiding chamber filters impurities and distributes the essential oil evenly, ensuring the quality of the essential oil and the evenness of application, thereby enhancing the massage effect.

[0025] Secondly, this utility model, through its innovative structural design, makes the use of essential oils more convenient and significantly improves various physical discomfort symptoms. When users suffer from nausea and vomiting, the convenient essential oil release mechanism allows for the rapid application of essential oils with gastrointestinal soothing effects (such as ginger essential oil) to the body. The active ingredients are absorbed through the skin or perceived through smell, regulating gastrointestinal function and relieving discomfort. For pain symptoms, whether muscle aches or joint pain, this device precisely releases analgesic essential oils (such as lavender and marjoram essential oils), and combined with the massage function, promotes essential oil penetration, reducing pain. When dealing with insomnia and anxiety, essential oils with calming and sleep-inducing effects (such as chamomile and ylang-ylang essential oils) can be conveniently used. The comfortable and convenient user experience allows for relaxation of the mind and body, relieving anxiety and promoting sleep. In a simple and convenient way, the advantages of essential oils are fully utilized to improve various discomfort symptoms and enhance the quality of life.

[0026] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the main body in one of the technical solutions of this utility model;

[0028] Figure 2 This is a schematic diagram of the replaceable massage head according to one of the technical solutions of this utility model;

[0029] Figure 3 This is a cross-sectional view of the portable essential oil massage device and the replaceable massage head when they are engaged, according to one of the technical solutions of this utility model.

[0030] Figure 4 This is a schematic diagram of the structure when the smooth massage head and the body are attracted together in one of the technical solutions of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the scraping massage head and the body when they are attracted together in one of the technical solutions of this utility model;

[0032] Figure 6 This is a schematic diagram of the structure when the convex massage head and the body are attracted together in one of the technical solutions of this utility model;

[0033] Among them, 100 is the main body, 101 is the insertion hole, 102 is the raised ridge, 103 is the essential oil tank, 104 is the essential oil bottle, 105 is the oil guide tube, 106 is the miniature solenoid valve, 107 is the miniature vibration motor, 108 is the closed door, 200 is the replaceable massage head, 201 is the plug, 202 is the groove, 203 is the opening, 204 is the oil guide cavity, 205 is the micropore, 206 is the annular magnetic suction plate, 207 is the oleophobic filter, 210 is the smooth massage head, 211 is the gua sha-shaped massage head, 212 is the raised dot-shaped massage head, 213 is the gua sha ridge, 214 is the raised dot, 300 is the temperature control cavity, 301 is the semiconductor cooling chip, 302 is the PTC heating film, 303 is the metal heat conduction plate, 304 is the heat dissipation substrate, 305 is the miniature axial flow fan, 306 is the ventilation hole, and 400 is the handle. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0035] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0036] like Figure 1-6 As shown, this utility model provides a portable essential oil massage device, comprising:

[0037] The main body 100 has an insertion hole 101 at the center of its bottom. The side wall of the insertion hole 101 is provided with two axially extending protruding ribs 102. The interior of the main body 100 is provided with an essential oil chamber 103 for holding an essential oil bottle 104. The top of the essential oil bottle 104 is screwed with a cap. The cap is sealed with an oil guide tube 105. One end of the oil guide tube 105 extends into the essential oil bottle 104, and the other end is sealed through the top of the insertion hole 101. A miniature solenoid valve 106 is connected and installed on the oil guide tube 105. A miniature vibration motor 107 is also fixedly installed inside the main body 100 by a shockproof silicone pad. The axis of the miniature vibration motor 107 is perpendicular to the bottom surface of the main body 100.

[0038] The replaceable massage head 200 has a plug 201 at its top center that can be matched and inserted into the socket 101. The sidewall of the plug 201 has two axially extending grooves 202 that can be matched and accommodated by corresponding protrusions 102. The top of the plug 201 has an opening 203 for the outer end of the oil guide tube 105 to extend into. The interior of the replaceable massage head 200 has an oil guide cavity 204 that communicates with the opening 203. The bottom of the replaceable massage head 200 has a plurality of microholes 205 that communicate with the oil guide cavity 204.

[0039] The bottom surface of the main body 100 and the top surface of each replaceable massage head 200 are provided with matching magnetic actuation rings 206.

[0040] In the above technical solution, the side wall of the insertion hole 101 at the center of the bottom of the portable essential oil massage device body 100 is provided with two protruding ridges 102. The height and spacing of the protruding ridges 102 are reasonably designed according to the diameter of the insertion hole 101 to fit the groove 202. The essential oil chamber 103 inside the body 100 can accommodate a conventional 30-50 ml capacity essential oil bottle 104. The cap of the essential oil bottle 104 is fixed to the bottle body by a threaded connection. The oil guide tube 105 passing through the cap can be a silicone hose to ensure smooth flow of essential oil. The miniature solenoid valve 106 on the oil guide tube 105 can be a commercially available miniature direct-acting solenoid valve, which can achieve precise opening and closing through the control circuit. The miniature vibration motor 107 inside the body 100 can be an eccentric wheel vibration motor, which is fixed to the top surface inside the body 100 by a shockproof silicone pad. The motor axis is perpendicular to the bottom surface of the body 100 to ensure that the vibration direction is consistent with the contact direction of the massage head. The depth of the groove on the side wall of the replaceable massage head 200 matches the height of the protrusion 102 of the main body 100, ensuring a tight fit during insertion. The diameter of the top opening 203 of the plug 201 is slightly larger than the outer diameter of the oil guide tube 105, ensuring that the oil guide tube 105 does not wobble after insertion. The oil guide cavity 204 inside the replaceable massage head 200 adopts a cylindrical structure with micropores 205 evenly distributed at the bottom, and the diameter of the micropores 205 is controlled within the range of 0.1-0.3 mm. The annular magnetic absorbing plates 206 on the bottom surface of the main body 100 and the top surface of the massage head can be made of neodymium iron boron annular magnets with a magnetic flux of 50-100 millitalas, ensuring stable magnetic connection and easy disassembly. During device assembly, the micro vibration motor 107 is first fixed to the center of the top of the main body 100 using anti-vibration silicone pads, and the motor wires are connected to the control circuit. One end of the oil guide tube 105 passes through the sealing hole of the cap and extends into the essential oil bottle 104, while the other end passes through the top of the insertion hole 101 and is connected in series with the micro solenoid valve 106. The plug 201 of the replaceable massage head is inserted into the insertion hole 101 of the main body, the groove 202 engages with the protrusion 102, and the annular magnetic absorbing plate 206 attracts and fixes them together. In use, the micro solenoid valve 106 is turned on, and the essential oil flows from the essential oil bottle 104 into the oil guide cavity 204 of the massage head through the oil guide tube 105, and seeps out evenly through the bottom micropore 205; the micro vibration motor 107 is started simultaneously, and the vibration is transmitted to the massage head through the magnetic absorbing plate on the bottom surface of the main body 100 to realize the vibration massage function.

[0041] This technical solution utilizes the convex ridge 102 of the bottom insertion hole of the main body to cooperate with the groove 202 of the replaceable massage head insert, combined with the annular magnetic suction piece 206, to quickly assemble and disassemble the massage head, ensuring a secure connection and preventing it from falling off during use. It also allows users to replace different types of massage heads according to their needs. The miniature solenoid valve 106 on the oil guide tube 105 can precisely control the flow of essential oil. Combined with the essential oil bottle 104 inside the essential oil tank 103, it not only meets the needs of portable use but also ensures even oil seepage through the micropores 205 with a diameter of 0.1-0.3 mm, reducing waste and ensuring effective application. The miniature vibration motor 107 inside the main body 100 is fixed by a shock-absorbing silicone pad. Its axis, perpendicular to the bottom surface of the main body 100, efficiently transmits vibration axially to the massage head, enhancing the muscle relaxation effect during massage while reducing vibration interference to components such as the essential oil tank 103 and the oil guide tube 105, thus improving the stability of the device's operation. The oil guide cavity 204 of the replaceable massage head is connected to the plug opening 203 to ensure that the essential oil flows smoothly into the micropore 205. Combined with the magnetic connection between the main body 100 and the massage head, the overall structure is compact and lightweight, suitable for carrying around and meeting the needs of various scenarios such as home and travel. Through standardized component selection (such as commercially available miniature direct-acting solenoid valves and eccentric wheel vibration motors) and reasonable layout, the essential oil control and vibration massage functions are realized while taking into account the ease of operation and structural reliability.

[0042] like Figure 3 As shown, in another technical solution, the main body 100 is further provided with a temperature control cavity 300. The temperature control cavity 300 is equipped with a semiconductor cooling chip 301, a PTC heating film 302, and two parallel metal heat-conducting plates 303. The cold end of the semiconductor cooling chip 301 is fixedly connected to one metal heat-conducting plate 303, and the hot end is connected to a heat dissipation substrate 304. The PTC heating film 302 is fixedly connected to the other metal heat-conducting plate 303. The free ends of the two metal heat-conducting plates 303 are sealed and pass through the temperature control cavity 300 and extend vertically to fit and fix to the outer side wall of the two protruding ridges 102. The heat dissipation substrate 304 is sealed and passes through the temperature control cavity 300, and its free end is welded with heat dissipation fins. A miniature axial flow fan 305 is fixedly installed near the heat dissipation fins, and its air outlet is provided with a ventilation hole 306 corresponding to the side wall of the main body 100.

[0043] The semiconductor cooling chip 301, PTC heating film 302, miniature axial fan 305, miniature solenoid valve 106, and miniature vibration motor 107 are all connected to the power supply.

[0044] In this technical solution, the temperature control cavity 300 inside the main body 100 can adopt a cuboid structure, with its dimensions designed according to the internal space of the main body 100. The inner wall is made of ABS engineering plastic, which has good heat insulation and structural strength. The semiconductor cooling chip 301 installed in the temperature control cavity 300 can be a commercially available TEC1-12706 semiconductor cooling module. Its cold end is fixedly connected to an aluminum heat-conducting plate through thermally conductive silicone, while its hot end is attached to an aluminum heat sink substrate 304. The PTC heating film 302 can be a flexible ceramic PTC heating element, which is attached to another aluminum heat-conducting plate with high-temperature resistant adhesive. The free ends of the two heat-conducting plates extend vertically out of the temperature control cavity 300 and are fixedly attached to the outer wall of the protrusion 102 on the side wall of the bottom insertion hole of the main body by screws, ensuring smooth heat conduction path. Aluminum heat dissipation fins are welded to the free end of the heat dissipation substrate 304 that protrudes from the temperature control cavity 300. A miniature axial fan 305 is fixedly installed near the fins. Ventilation holes 306 are opened on the side wall of the body 100 corresponding to the fan outlet.

[0045] The driving mechanism for the thermoelectric cooler 301 and the PTC heating film 302 consists of a power supply, a control circuit, and a temperature feedback module. The power supply can be a lithium battery, providing DC voltage to the thermoelectric cooler 301 via a DC-DC boost module. The PTC heating film is directly powered by the lithium battery through a thyristor or MOSFET driving circuit. The control circuit includes a microcontroller (such as an STM32 or Arduino microcontroller) and a temperature sensor (such as an NTC thermistor). The temperature sensor is mounted on the metal heat-conducting plate 303 near the protrusion 102, collecting the heat-conducting plate temperature in real time and feeding it back to the microcontroller, forming a closed-loop temperature control system.

[0046] The specific temperature control process is as follows: The user can set the target temperature via the temperature adjustment button (e.g., 40℃ for warm mode or 25℃ for cool mode). The microcontroller compares the real-time data from the temperature sensor. If the current temperature is lower than the target value, the PTC heating film drive circuit is triggered. Current flows through the PTC heating film 302 (resistance increases with temperature) to generate Joule heating. The heat is conducted through the aluminum or copper heat-conducting plate to the outer wall of the protrusion 102, and then transferred to the massage surface through the replaceable massage head 200 made of heat-conducting metal. If the current temperature is higher than the target value, the microcontroller activates the semiconductor cooling chip 301. Its cold end is attached to another metal heat-conducting plate 303 through thermally conductive silicone to absorb the heat from the protrusion 102 and lower its temperature. The heat from the hot end is transferred to the heat dissipation fins through the heat dissipation substrate 304 and exhausted outside the body 100 by the micro axial fan 305 through the side wall ventilation holes 306. The temperature sensor continuously monitors the temperature of the heat-conducting plate. When the target value is reached, the microcontroller automatically adjusts the drive current to stabilize the temperature within a fluctuation range of ±2℃. The semiconductor cooling chip 301, PTC heating film 302, and miniature axial fan 305 are all powered by 5V DC and can share the internal lithium battery power with the miniature solenoid valve 106 and miniature vibration motor 107. The metal heat-conducting plate 303 can be made of pure copper or 6063 aluminum alloy with high thermal conductivity, and the surface is anodized to enhance corrosion resistance. The heat dissipation substrate 304 is connected to the heat dissipation fins by brazing to ensure efficient heat conduction. The temperature control cavity 300 is sealed to other areas inside the main body 100 by a silicone rubber sealing ring to prevent hot and cold air from directly contacting the essential oil chamber 103 and the vibration motor area. When the device is in operation, if the user needs to heat the massage head, the control circuit activates the PTC heating film 302. The heat generated is transferred to the protrusion 102 through the aluminum heat-conducting plate, and then conducted to the massage surface through the replaceable massage head 200 made of heat-conducting metal. The temperature can be controlled between 38-45℃. If cooling is required, the cold end of the semiconductor cooling chip 301 is cooled after being energized. The temperature of the protrusion 102 is reduced to 20-25℃ through another heat-conducting plate. The heat from the hot end is exhausted outside the main body 100 through the heat dissipation substrate 304 and heat dissipation fins by the miniature axial flow fan 305. During temperature adjustment, the miniature axial flow fan 305 runs continuously, forming air convection through the ventilation holes 306 to ensure heat dissipation efficiency. This temperature control structure utilizes mature semiconductor cooling and PTC heating technologies, combined with the efficient conduction of the metal heat-conducting plate 303, to achieve bidirectional temperature adjustment of the massage head. This not only meets the needs of different massage scenarios but also avoids overheating inside the device through a reasonable heat dissipation design. The compact installation positions of each component ensure compatibility with the original vibration and oil guiding functions of the main body 100, maintaining overall portability and practicality.

[0047] In another technical solution, the replaceable massage head 200 is made of a thermally conductive metal material. In this solution, the replaceable massage head 200 can be made of 6063 aluminum alloy or copper as the thermally conductive metal material. 6063 aluminum alloy has a thermal conductivity of approximately 205 W / (m·K) and a density of 2.7 g / cm³, making it suitable for balancing thermal conductivity and portability. Copper has a thermal conductivity of 401 W / (m·K), but a higher density, and can be selected based on product weight requirements. The metal material is formed by die casting or CNC machining. The depth of the groove 202 in the top insert matches the height of the protrusion 102 on the body, ensuring a tight fit during insertion. The surface of the massage head that contacts the skin can be anodized to form a wear-resistant and heat-insulating layer. During assembly, the insert 201 of the heat-conducting metal massage head is aligned with the insertion hole 101 at the bottom of the main body and inserted. The groove 202 on the side wall of the insert engages with the protrusion 102 of the insertion hole. Simultaneously, the top opening 203 is fitted onto the outer end of the oil guide tube 105, and the main body 100 is fixed by adsorption with the annular magnetic absorbing plate 206 (such as a neodymium iron boron magnet) on the top surface of the massage head. When the semiconductor cooling chip 301 or PTC heating film 302 in the temperature control cavity 300 of the main body is working, the hot and cold energy is transferred to the protrusion 102 through the metal heat-conducting plate 303, and then quickly conducted to the bottom contact surface through the heat-conducting metal massage head. The temperature conduction delay time is ≤5 seconds, and the temperature uniformity error is ≤±1.5℃. This design utilizes the high thermal conductivity of metal materials, enabling the massage head to respond quickly to temperature changes in the temperature control system, avoiding the heat conduction lag problem of traditional plastic massage heads, and improving the experience of warm or cold massage. Meanwhile, the rigid structure of the metal material helps to enhance the vibration transmission efficiency, so that the vibration of the micro vibration motor 107 is evenly distributed at the bottom of the massage head. Combined with the penetration of essential oils, it achieves a synergistic care effect of temperature, vibration and essential oils.

[0048] like Figures 4-6As shown, in another technical solution, the replaceable massage head 200 includes a smooth massage head 210, a scraping massage head 211, and a raised-dot massage head 212. The bottom of the smooth massage head 210 is smooth, the bottom of the scraping massage head 211 is provided with multiple scraping ridges 213, and the bottom of the raised-dot massage head 212 is provided with multiple raised dots 214. In this technical solution, the replaceable massage head 200 is divided into three types: smooth, scraping, and raised-dot, all of which adopt a uniform plug-in 201 structure. The smooth massage head has a rounded, smooth bottom with a surface roughness Ra≤0.6, suitable for soothing massage of sensitive areas such as the face and neck. The gua sha massage head has 3-5 trapezoidal gua sha ridges at the bottom, 1.5-2 mm high and spaced 4-6 mm apart, with rounded edges of 0.3 mm to avoid scratching the skin, suitable for meridian gua sha on the back and limbs. The convex massage head has 6-10 hemispherical convex dots evenly distributed at the bottom, 2-3 mm in diameter and 2-2.5 mm high, spaced 5-7 mm apart, which can precisely stimulate acupoints or deep muscles. The top opening 203 of the insert 201 of the three massage heads mates with the outer end of the oil guide tube 105, and the edge of the opening 203 is fitted with an annular sealing gasket. During installation, users select the appropriate massage head based on their massage needs, align the plug 201 with the socket 101 on the main body 100, and insert it. The head is secured by the mechanical engagement of the protrusions 102 and grooves 202, and the magnetic attraction of the magnetic plate. The replacement process takes ≤3 seconds. The diverse massage head designs cater to different areas and care needs: the smooth head allows for even application of essential oils, suitable for daily relaxation; the gua sha head promotes blood circulation through its prismatic structure, suitable for health and therapeutic purposes; and the raised-dot head targets acupoints to enhance massage intensity, suitable for deep tissue care. The standardized plug 201 structure ensures interchangeability, allowing users to quickly switch between heads without additional tools, enhancing the device's practicality and applicability.

[0049] like Figure 1 As shown, in another technical solution, a sealing door 108 is hinged to the corresponding position of the outer wall of the main body 100 and the essential oil tank 103. In this technical solution, the sealing door 108, located at the corresponding position of the outer wall of the main body 100 and the essential oil tank 103, can be made of ABS engineering plastic and is hinged to the right side wall of the main body 100. A rectangular silicone sealing strip is pasted on the inner edge of the door to ensure a tight fit with the main body 100 when closed, achieving an IP54 sealing rating for the essential oil tank 103 and preventing the entry of external dust and moisture. A push-button buckle can be provided on the surface of the sealing door 108, cooperating with a slot on the main body 100. When pressed, the buckle pops up, allowing for one-handed opening. The design of the sealing door balances the sealing performance of the essential oil tank 103 with ease of operation. The elastic compression of the silicone sealing strip effectively prevents the evaporation of essential oils while preventing the entry of external contaminants, ensuring the quality and hygiene safety of the essential oils.

[0050] In another technical solution, an annular sealing gasket is provided on the top of the plug-in 201. In this solution, the annular sealing gasket on the top of the plug-in 201 can be made of silicone rubber, forming an annular sealing area. When the replaceable massage head 200 is inserted into the main body socket 101, the plug-in groove 202 slides down along the protrusion 102, the sealing gasket contacts the inner wall of the top of the socket 101 and undergoes elastic deformation, filling the gap between the plug-in 201 and the socket 101, forming a sealing barrier. The annular sealing gasket effectively solves the sealing problem when the plug-in 201 is connected to the socket 101, preventing essential oil leakage from damaging the internal circuitry or mechanical components of the device, while also preventing external impurities from entering the oil guiding system, ensuring the cleanliness and reliability of essential oil delivery. The oil resistance and temperature resistance of silicone rubber allow it to adapt to the needs of use in different environments, eliminating the need for frequent replacements over long-term use and reducing maintenance costs.

[0051] In another technical solution, the pore size of the micropores 205 is 0.1~0.3mm. In this technical solution, the micropores 205 at the bottom of the replaceable massage head 200 are processed using laser drilling technology, with the pore size controlled within the range of 0.1-0.3 mm and the verticality error of the channels ≤0.5°. They are distributed in a ring or matrix at the bottom of the massage head. The selection of the pore size is based on fluid dynamics calculations to ensure that the essential oil flows out stably under gravity and capillary action, avoiding poor oil flow due to too small a pore size or uncontrolled flow due to too large a pore size. The axis of the micropores 205 is perpendicular to the bottom surface of the massage head, ensuring that the essential oil seeps out vertically and forms a uniform oil film when in contact with the skin. By controlling the opening time of the micro solenoid valve 106, the amount of oil dispensed per session can be precisely controlled to meet the dosage requirements of different massage areas.

[0052] In another technical solution, the inner bottom wall of the oil guiding cavity 204 is covered with an oleophobic filter screen 207, the mesh diameter of which is 0.03~0.05mm. In this technical solution, the oleophobic filter screen 207 on the inner bottom wall of the oil guiding cavity 204 can be a 316L stainless steel woven mesh with a mesh diameter of 0.03-0.05 mm (corresponding to a mesh size of 200-300 mesh), and the surface is coated with a polytetrafluoroethylene oleophobic coating with a contact angle ≥110°. It can effectively intercept impurities with a particle size >0.05 mm (such as plant residues and sediments) while allowing essential oil molecules to pass freely. The filter screen can be fixed to the bottom of the oil guiding cavity 204 by an annular groove, and the edge is interference-fitted with the cavity wall (interference amount 0.2-0.3 mm). It can be removed for cleaning when disassembling the massage head. The filter screen is installed 5-8 mm below the connection point between the oil guiding cavity 204 and the opening 203 of the insert 201, ensuring that the essential oil flows into the oil guiding cavity 204, is filtered by the filter screen before flowing into the micropores 205. When the essential oil flows into the oil guiding cavity 204 from the oil guiding tube 105, impurities are intercepted by the filter screen, and the clean essential oil is evenly distributed to each micropore 205 through the mesh, preventing the micropores 205 from becoming clogged. The oleophobic properties of the filter screen reduce the adhesion of essential oil to the mesh surface, keeping the filter pores clear. The oleophobic filter screen solves the problem of impurities in the essential oil clogging the micropores 205, ensuring the stability and uniformity of oil output. The 0.03-0.05 mm mesh diameter and the micropore 205 pore size form a graded filtration system, which retains the effective components in the essential oil while preventing particulate contaminants from affecting the massage experience. The removable design of the filter screen facilitates regular cleaning by the user, maintains the long-term reliable operation of the device, and improves the product's durability and hygiene standards.

[0053] In another technical solution, a handle 400 is fixedly connected to one side of the main body. In this solution, the handle 400, fixedly connected to one side of the main body, can be injection molded from high-strength engineering plastics such as ABS material, ensuring good mechanical strength and durability, while being lightweight and easy for the user to hold. The handle 400 is ergonomically designed, with a curved grip area that conforms to the natural gripping posture of the hand. The surface can be frosted to increase friction and prevent slippage during use.

[0054] Buttons can be installed on the handle 400, and these can be touch-sensitive buttons. The button layout is rationally planned according to the operation logic. For example, the button controlling the start / stop of the micro vibration motor 107 and adjusting the vibration intensity is placed in a position easily accessible to the thumb; the button controlling the opening / closing of the micro solenoid valve 106 and adjusting the essential oil flow is arranged in an area easily pressed by the index finger; for massage devices with temperature control, the temperature adjustment buttons are distributed in a position easily accessible by the middle finger. A control circuit board is connected below the buttons, and the circuit board integrates a microcontroller responsible for receiving button signals and controlling the operation of the corresponding components. A battery can also be installed on the handle, and a rechargeable lithium battery can be selected. A battery compartment is provided inside the handle 400, and the battery compartment adopts a snap-on design for easy removal and installation of the battery. The battery is connected to the control circuit board via wires to power the entire massage device, including the micro vibration motor 107, the micro solenoid valve 106, the semiconductor cooling chip 301, the PTC heating film 302, and the micro axial fan 305, among other components. A charging port, such as a Type-C port, is located near the battery compartment for convenient battery charging. The port is equipped with a rubber dust plug to prevent dust and moisture from entering.

[0055] The number of devices and processing capacity described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this portable essential oil massage device will be readily apparent to those skilled in the art.

[0056] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A portable essential oil massage device, characterized in that, include: The main body has an insertion hole at the center of its bottom. The side wall of the insertion hole has two axially extending convex ridges. The interior of the main body has an essential oil compartment for holding an essential oil bottle. The top of the essential oil bottle is screwed with a cap. The cap is sealed with an oil guide tube. One end of the oil guide tube extends into the essential oil bottle, and the other end exits sealed from the top of the insertion hole. A miniature solenoid valve is connected and installed on the oil guide tube. A miniature vibration motor is also fixedly installed in the main body through a shock-absorbing silicone pad. The axis of the miniature vibration motor is perpendicular to the bottom surface of the main body. A replaceable massage head has a plug at the center of its top that can be matched and inserted into the socket. The sidewall of the plug has two axially extending grooves that can be matched and accommodated by corresponding protrusions. The top of the plug has an opening for the outer end of the oil guide tube to extend into. The interior of the replaceable massage head has an oil guide cavity communicating with the opening. The bottom of the replaceable massage head has multiple microholes communicating with the oil guide cavity. The bottom surface of the main body and the top surface of each replaceable massage head are provided with matching annular magnetic plates.

2. The portable essential oil massage device as described in claim 1, characterized in that, The main body also includes a temperature control cavity, in which a semiconductor cooling chip, a PTC heating film, and two parallel metal heat-conducting plates are installed. The cold end of the semiconductor cooling chip is fixedly connected to one of the metal heat-conducting plates, and the hot end is connected to a heat dissipation substrate. The PTC heating film is fixedly connected to the other metal heat-conducting plate. The free ends of the two metal heat-conducting plates are sealed and pass through the temperature control cavity and extend vertically to fit and be fixed to the outer side wall of the two protruding ridges. The heat dissipation substrate is sealed and passes through the temperature control cavity, and its free end is welded with heat dissipation fins. A miniature axial fan is fixedly installed near the heat dissipation fins, and its air outlet has ventilation holes corresponding to the side wall of the main body. The semiconductor cooling chip, PTC heating film, miniature axial fan, miniature solenoid valve, and miniature vibration motor are all connected to the power supply.

3. The portable essential oil massage device as described in claim 2, characterized in that, The replaceable massage head is made of a thermally conductive metal material.

4. The portable essential oil massage device as described in claim 1, characterized in that, The replaceable massage head includes a smooth massage head, a gua sha massage head, and a raised dot massage head. The bottom of the smooth massage head is smooth, the bottom of the gua sha massage head is provided with multiple gua sha ridges, and the bottom of the raised dot massage head is provided with multiple raised dots.

5. The portable essential oil massage device as described in claim 1, characterized in that, A closed door is hinged to the outer wall of the main body at the corresponding position of the essential oil compartment.

6. The portable essential oil massage device as described in claim 1, characterized in that, The top of the plug is provided with an annular sealing gasket.

7. The portable essential oil massage device as described in claim 1, characterized in that, The pore size of the micropores is 0.1~0.3mm.

8. The portable essential oil massage device as described in claim 1, characterized in that, The inner bottom wall of the oil guiding cavity is covered with an oleophobic filter screen with a mesh diameter of 0.03~0.05mm.

9. The portable essential oil massage device as described in claim 1, characterized in that, A handle is fixedly connected to one side of the main body.

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