Knee massager

Abstract

The utility model discloses a kind of knee massagers, applied to medical instrument technical field, including sheath and control box, sheath includes multiple air bags covering multiple positions of knee and heating module located in air bag lower layer, control box is integrated with control system, control system includes the air pump communicated with each air bag, the pressure control module for controlling air pressure and massage mode in air bag is connected with air pump, heating plate connected with heating module, temperature control module is connected with heating plate for when heating module temperature reaches first preset temperature, control heating module stops heating, still include temperature control switch for when detecting that heating module reaches second preset temperature, control its switch is opened, second preset temperature is higher than first preset temperature.The knee massager realizes pressure accurate control and accurate temperature control, improves the comfort of user, can satisfy the use demand of different people.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a knee massager. Background Technology

[0002] A knee massager works by using an air pump to inflate and deflate air bladders within the device. The rhythmic inflation, compression, and deflation of these bladders create circulatory pressure from the distal to the proximal tissues of the limb, mimicking the body's biomechanical cycles. Built-in heating elements provide warmth to the knee during the massage, helping to stimulate acupoints and dilate blood vessels around the knee joint. Knee massagers promote venous and lymphatic return, improve local blood circulation, accelerate the absorption of metabolic waste, inflammatory factors, and pain-causing agents in the blood, relieve muscle spasms and pain, relax knee muscles, and prevent muscle atrophy and fibrosis.

[0003] Currently available knee massagers lack specific closed-loop control feedback in terms of massage pressure and temperature, making it impossible to achieve high-precision control. In addition, they have limited pressing positions and single modes, failing to meet complex needs and provide better comfort. Utility Model Content

[0004] In view of the shortcomings of existing knee massagers, this utility model provides a knee massager that achieves precise pressure control and accurate temperature control, improves user comfort, and meets the needs of different groups of people.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A knee massager includes a protective sleeve and a control box. The protective sleeve includes multiple airbags covering multiple positions on the knee and a heating module located beneath the airbags. The control box integrates a control system, which includes an air pump connected to each airbag, a pressure control module connected to the air pump for controlling the air pressure within the airbags and the massage mode, a heating plate connected to the heating module, and a temperature control module connected to the heating plate for controlling the heating module to stop heating when the heating module reaches a first preset temperature. The control system also includes a temperature control switch connected to the heating module for controlling its on / off state when the heating module detects that it has reached a second preset temperature, where the second preset temperature is higher than the first preset temperature.

[0007] Optionally, the heating module includes a heating layer, a heating wire, and a heating plug. The heating wire is disposed on the heating layer, one end of the heating wire is connected to the heating plug, and the other end is connected to the temperature control switch. The other end of the temperature control switch is connected to the heating plug, and the heating plug is connected to the heating plate.

[0008] Optionally, the temperature control module includes:

[0009] A temperature sensor for detecting the temperature of the heating wire;

[0010] A first temperature protection unit connected to the temperature sensor, used to control the heating wire to stop heating when the temperature detected by the temperature sensor exceeds a first preset temperature.

[0011] Optionally, the temperature control module includes a second temperature protection unit connected to the temperature control switch. The second temperature protection unit is used to control the heating wire to cut off the output within a set time when it receives a signal from the temperature control switch to disconnect, and the output cannot be automatically restored.

[0012] Optionally, the heating layer comprises, from the inside out, a first nylon fabric, a non-woven fabric, a sponge fabric, and a second nylon layer, with the heating module sewn onto the non-woven fabric and its other side in contact with the sponge fabric.

[0013] Optionally, the pressure control module includes:

[0014] A pressure sensor is used to detect the pressure inside the airbag that is currently being inflated. All the airbags share one pressure sensor, and one end of the pressure sensor is connected to the main circuit between the air pump and the airbag.

[0015] Multiple solenoid valves are used to control the inflation and deflation states of each of the airbags respectively.

[0016] A massage control unit connected to the air pump, the pressure sensor, and the solenoid valve, used to control the air pump's inflation volume, inflation duration, and the airbag inflation sequence.

[0017] Optionally, the airbag includes a first airbag and a second airbag located on both sides of the front leg in front of the knee, a third airbag located at the upper joint of the knee, a fourth airbag and a fifth airbag located on the left and right sides of the knee, and a sixth airbag located in the back of the knee. The first airbag and the second airbag form an angle of 55°-65°. The third airbag is located on both sides of the fourth airbag and the fifth airbag, and the sixth airbag is located on the lower outer side of the fourth airbag.

[0018] Optionally, the upper part of the protective sleeve is provided with an air nozzle base, and the air nozzle base is provided with an air nozzle hole that is independently connected to each airbag. The air nozzle opening of the air nozzle seat of the control box is connected to the air nozzle hole of the air nozzle base one by one. When the protective sleeve is tied to the knee, the control box is located on the thigh above the knee.

[0019] Optionally, the sixth airbag has a ventilation portion that overlaps with the fourth airbag, and the sixth airbag has multiple spaced perforated strips at the overlapping position, with the spaces between the perforated strips forming ventilation channels.

[0020] Optionally, the ventilation section is located on the outside of the fourth airbag, the perforated strip is arranged along the bending direction of the knee, and the sheath is provided with a strap with Velcro on one side of the sixth airbag and a fixing ring that cooperates with the strap on the other side.

[0021] The beneficial effects of this utility model are as follows: the knee massager provided by this utility model has a sleeve that covers different parts of the knee with multiple airbags. The airbags are fully enclosed airbags, providing comprehensive coverage for knee massage and high comfort. The heating module is located under the airbags, providing a heat therapy effect.

[0022] The control box integrates an automated control system. Through the air pump and pressure control module, users can adjust the massage intensity and massage mode of the airbags as needed, improving user comfort and meeting the needs of different groups of people.

[0023] The knee massager's control system features two independent over-temperature protection devices: a temperature control module and a temperature control switch. The temperature control module monitors the heating module's temperature in real time. When the temperature reaches or exceeds a first preset temperature, the temperature control module activates, stopping the heating module and cutting off the output. The temperature control module is controlled by the control system, ensuring high precision and fast response.

[0024] When the first protection device fails and the equipment temperature rises to the second preset temperature, the temperature control switch will activate, automatically disconnecting the heating module circuit, stopping heating, and cutting off the output. The temperature control switch is independent of the control system, ensuring high reliability and providing additional safety protection in the event of a first protection failure.

[0025] The knee massager provided by this utility model includes a control box and a fully enclosed airbag. The airbag inflates and deflates to achieve knee massage. A new pressure control module enables precise pressure control. It features a first preset temperature and a second preset temperature, with a temperature control module for accurate temperature control and a temperature control switch to prevent overheating. This dual protection of the temperature control module and switch ensures both user comfort and reliable safety. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of the sheath of the knee massager provided in a specific embodiment of this utility model;

[0028] Figure 2 A diagram showing the distribution of airbags on the protective sleeve;

[0029] Figure 3 This is a schematic diagram of the first and second airbags;

[0030] Figure 4 A schematic diagram of the third, fourth, and fifth airbags;

[0031] Figure 5 This is a schematic diagram of the sixth airbag;

[0032] Figure 6 This is a schematic diagram of the heating layer;

[0033] Figure 7 This is a schematic diagram of the heating module;

[0034] Figure 8 A schematic diagram of the control box of a knee massager;

[0035] Figure 9 This is a schematic diagram of the control system of a knee massager.

[0036] Figure label:

[0037] First airbag 1, Second airbag 2, Third airbag 3, Fourth airbag 4, Fifth airbag 5, Sixth airbag 6, Air nozzle hole 7, Air nozzle base 8, Velcro 9, Second nylon layer 10, Sponge flannel 11, Non-woven fabric 12, First nylon fabric 13, Air eye 14, Heating module 15, Heating wire 16, Temperature sensor 17, Heating plug 18, Temperature control switch 19, Control box 20, Upper shell 21, Main control board 22, Screw 23, Pressure plate 24, Air pump 25, Solenoid valve 26, Lower shell 27, Air nozzle seat 28, Heating plate 29. Detailed Implementation

[0038] The core of this utility model is to provide a knee massager that achieves precise pressure control and accurate temperature control, thereby improving user comfort and meeting the needs of different groups of people.

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please refer to Figures 1 to 9 This is a schematic diagram of a knee massager provided in a specific embodiment of the present invention.

[0041] In one specific embodiment, the knee massager provided by this utility model includes a protective sleeve and a control box 20. The protective sleeve includes multiple airbags covering multiple positions of the knee and a heating module 15 located under the airbags. The control box 20 integrates a control system, including an air pump 25 connected to each airbag, a pressure control module connected to the air pump 25 for controlling the air pressure inside the airbag and the massage mode, a heating plate 29 connected to the heating module 15, and a temperature control module connected to the heating plate 29 for controlling the heating module 15 to stop heating when the temperature of the heating module 15 reaches a first preset temperature. It also includes a temperature control switch 19 connected to the heating module 15 for controlling its switch to turn off when the heating module 15 is detected to have reached a second preset temperature. The second preset temperature is higher than the first preset temperature.

[0042] In the above structure, the sheath covers different areas of the knee with multiple airbags. An air pump 25 controls the inflation and deflation of the airbags, simulating kneading and squeezing massage techniques to achieve a massage effect on the knee. The airbags are fully enclosed, providing comprehensive coverage for knee massage and offering high comfort. A heating module 15 is located beneath the airbags, providing a heat therapy effect.

[0043] The control box 20 integrates an automated control system. The upper shell 21 and lower shell 27 are fastened together, housing components such as the main control board 22, air pump 25, pressure control module, and heating plate 29. The main control board 22 is the core of the control system and can be a microcontroller unit. Through the air pump 25 and pressure control module, users can adjust the massage intensity and mode of the airbags as needed, improving user comfort and meeting the needs of different users.

[0044] The knee massager's control system has two independent overheat protection devices, namely the temperature control module and the temperature control switch 19, which are used to control the heating temperature to ensure safety and comfort.

[0045] Specifically, the temperature control module monitors the temperature of the heating module 15 in real time. When the temperature reaches or exceeds the first preset temperature, the temperature control module (first protection device) activates, controlling the heating module 15 to stop heating and cut off the output. The temperature control module is controlled by the control system, ensuring high precision and fast response.

[0046] The first preset temperature ensures the heat therapy temperature is within a comfortable range and prevents the device from overheating. For example, the first preset temperature can be set to 56℃. It should be noted that the first preset temperature must not exceed the comfortable heat therapy temperature setting by +3℃. For instance, if the comfortable heat therapy temperature is set to 53℃, then the first preset temperature should be 56℃.

[0047] When the first protection device fails and the equipment temperature rises to the second preset temperature, the temperature control switch 19 (the second protection device) will activate and automatically disconnect, thus disconnecting the heating module 15 circuit, automatically stopping heating, and cutting off the output. The second protection device is independent of the control system, has high reliability, and can provide additional safety protection when the first protection fails.

[0048] The second preset temperature is higher than the first preset temperature, and is usually set to 60℃. At this time, the temperature control switch 19 can be selected with the 60℃ characteristic to ensure that it can still effectively protect the user's safety in extreme situations.

[0049] In practical applications, under normal operation, the temperature control module ensures that the heating temperature does not exceed 56℃, allowing users to enjoy a comfortable hot compress experience. In the event of a malfunction in the temperature control module, the temperature control switch 19 will cut off the power supply when the temperature reaches 60℃ to prevent the device from overheating.

[0050] The control system may include a main control board 22, an air pump module 25, an air valve module, an interaction module, a heating module 15, a pressure acquisition module, a temperature detection module, an emergency stop module, and a temperature control switch 19. The air valve module and the pressure acquisition module work in conjunction with the air pump 25, and the temperature detection module works in conjunction with the heating module 15. The interaction module can be a combination of button adjustment and LED indicator. The buttons are connected to the controller's input signal to receive user operation signals. The indicator lights are connected to the controller's output signal to control and indicate the working status. The emergency stop module outputs a stop switch on the control box 20, which can stop the treatment program at any time. The output stop switch is independent of the power switch. After the treatment program is stopped, the device automatically releases the pressure inside the airbag. All modules work together and, through program control, can realize two main functions: knee massage and heating. Users can adjust the massage intensity, heat temperature, and massage mode of the airbag as needed.

[0051] The knee massager provided by this utility model includes a control box 20 and a fully enclosed airbag. The knee massage function is achieved by inflating and deflating the airbag. A new pressure control module enables precise pressure control; a temperature control module achieves accurate temperature control; and a temperature control switch 19 prevents uncontrolled overheating. With the dual protection provided by the temperature control module and the temperature control switch 19, the knee massager can provide reliable safety while ensuring user comfort.

[0052] Based on the above specific embodiments, the heating module 15 includes a heating layer, a heating wire 16 and a heating plug 18. The heating wire 16 is disposed on the heating layer. One end of the heating wire 16 is connected to the heating plug 18 and the other end is connected to the temperature control switch 19. The other end of the temperature control switch 19 is connected to the heating plug 18. The heating plug 18 is connected to the heating plate 29.

[0053] In one specific embodiment, heating wires 16 are evenly arranged in the heating layer, covering the airbag inflation position, so as to provide uniform heating during inflation. Heating wires 16 generate heat through electric current and are the core component of the heating module 15. They are typically made of a metal material with high resistivity, such as a nickel-chromium alloy, which has good high-temperature resistance and oxidation resistance.

[0054] The heating plug 18 serves as a power input interface, introducing external power into the heating module 15. Preferably, the heating layer is provided with an air hole 14, which is a wire lead-out hole, facilitating the lead-out of the wire from the heating layer.

[0055] The temperature control switch 19 acts as an overheat protection device, automatically disconnecting the circuit when the temperature exceeds the set value to prevent the heating module 15 from overheating. The temperature control switch 19 may contain a bimetallic strip for on / off control, or other temperature-sensitive elements for on / off control.

[0056] One end of the heating wire is connected to the heating plug 18, which provides current to the heating wire 16. The heating plug 18 is connected to the heating plate 29, which can be a power distribution module within the control box 20, used to control the power supply to the heating module 15. The main control board 22 is connected to the power supply via a power management module. The other end of the heating wire is connected to the input terminal of the temperature control switch 19, and the output terminal of the temperature control switch 19 is connected to the heating plug 18, forming a complete circuit loop.

[0057] When the heating module 15 is powered on, current flows through the heating plug 18 into the heating wire 16, which generates heat. The heating layer then evenly conducts the heat to the sheath. The temperature control switch 19 is closed, and the circuit remains conductive. If the temperature of the heating module 15 exceeds a second preset temperature, the bimetallic strip inside the temperature control switch 19 deforms, and the contacts open. The circuit is cut off, and the heating wire 16 stops working, thus preventing the heating module 15 from being damaged by overheating or causing safety issues.

[0058] In the above embodiments, the heating function is achieved through components such as heating wire 16, heating layer, and heating plug 18, and overheat protection is provided by temperature control switch 19. The heating module 15 has a simple structure and is easy to connect to the temperature control switch 19, ensuring safety and reliability during use while providing effective heating.

[0059] Based on the above specific embodiments, the temperature control module includes:

[0060] Temperature sensor 17 is used to detect the temperature of heating wire 16;

[0061] A first temperature protection unit connected to temperature sensor 17, used to control heating wire 16 to stop heating when the temperature detected by temperature sensor 17 exceeds a first preset temperature.

[0062] In one specific embodiment, the control system controls the heating wire 16 to heat the wire. A temperature sensor 17 is installed near the heating wire 16 or within the heating layer and is connected to the control circuit via a wire. The temperature sensor 17 detects the temperature of the heating wire 16 in real time and converts the temperature change into an electrical signal (such as voltage, current, or digital signal). The temperature sensor 17 converts the detected temperature value into an electrical signal and feeds it back to the control system in real time. A first temperature protection unit receives the signal from the sensor and compares it with a preset first temperature. If the temperature is lower than the first preset temperature, the heating wire 16 continues to operate, maintaining the heating state. If the detected temperature exceeds the first preset temperature, the first temperature protection unit cuts off the power supply to the heating wire 16, stopping heating to prevent the temperature from rising further.

[0063] Preferably, when the temperature difference between the heating wire 16 and the comfortable heat therapy temperature is large (e.g., the temperature difference exceeds 5°C), high-power heating is applied to achieve rapid temperature rise. When the temperature difference between the heating wire 16 and the comfortable heat therapy temperature is small (e.g., the temperature difference does not exceed 5°C), low-power heating is applied. When the heating time is up, heating is stopped to ensure that the temperature is within the error range, making temperature control convenient.

[0064] In the above embodiments, the temperature control module achieves accurate temperature monitoring and protection of the heating module 15 through the temperature sensor 17 and the first temperature protection unit. It can quickly cut off the power supply when the temperature exceeds the preset value, with fast response speed and high reliability, ensuring the safe operation of the equipment and improving the user experience.

[0065] In a preferred embodiment, the first temperature protection unit is connected to an alarm. When the alarm receives a signal from the first temperature protection unit that the heating wire 16 is cut off, the alarm will sound an alarm to alert the user that the temperature is abnormal.

[0066] The first temperature protection unit is connected to the interaction module to display the temperature status in real time, improving the user experience.

[0067] Based on the above specific embodiments, the temperature control module includes a second temperature protection unit connected to the temperature control switch 19. The second temperature protection unit is used to control the heating wire 16 to cut off the output within a set time when it receives a disconnect signal from the temperature control switch 19, and the output cannot be automatically restored.

[0068] In one specific embodiment, when the temperature control switch 19 detects that the temperature exceeds a second preset temperature, the temperature control switch 19 disconnects, cutting off the power supply to the heating wire 16. After receiving the disconnection signal from the temperature control switch 19, the second temperature protection unit controls the heating wire 16 to cut off the output within a set time (e.g., within 5 minutes). The second temperature protection unit does not automatically recover after cutting off the power supply to ensure that the device will not restart in an overheated state, thereby avoiding equipment damage or safety accidents caused by excessive temperature.

[0069] In the above embodiments, heating is controlled in a closed loop, cutting off the heating power supply at the source, making it safer and more reliable.

[0070] Based on the above specific embodiments, the heating layer includes, from the inside out, a first nylon cloth 13, a non-woven fabric 12, a sponge velvet cloth 11, and a second nylon layer 10. The heating module 15 is sewn onto the non-woven fabric 12 and its other side is in contact with the sponge velvet cloth 11.

[0071] In one specific embodiment, the heating layer may comprise four layers: the innermost layer is nylon fabric, the middle layer is non-woven fabric 12 connecting the heating wire 16, the top layer is thin sponge fleece 11, and the outermost layer is a nylon layer. Nylon fabric has good abrasion resistance, breathability, and a certain degree of water resistance. The outer nylon fabric is in direct contact with the legs, protecting the skin and providing even heat conduction, resulting in a more comfortable feel.

[0072] All heating wires 16 are fixed to non-woven fabric 12 with sewing thread. The temperature control switch 19 is wrapped with nylon cloth and sewn firmly to non-woven fabric 12. The temperature sensor 17 is sewn firmly to non-woven fabric 12 with sewing thread. The temperature sensor 17 and the two wires leading to the heating plug 18 are all sewn onto non-woven fabric 12. Non-woven fabric 12 not only has good thermal conductivity, ensuring that heat can be evenly distributed to the nylon cloth, but also provides stable support for heating module 15.

[0073] The thin sponge fabric 11 serves to insulate against heat loss and prevents it from dissipating quickly.

[0074] The heating plug 18 extends from the air vent 14, and the end of the heating wire is fitted with a silicone tube for secure fixation. The heating plug 18 is a male connector, and the heating plate 29 is equipped with a female connector. The two are plugged into each other for easy connection during use.

[0075] Based on the above specific embodiments, the pressure control module includes:

[0076] A pressure sensor is used to detect the pressure inside the airbag that is currently being inflated. All airbags share one pressure sensor, and one end of the pressure sensor is connected to the main circuit between the air pump 25 and the airbag.

[0077] Multiple solenoid valves 26 are used to control the inflation and deflation states of each airbag respectively.

[0078] A massage control unit connected to the air pump 25, pressure sensor, and solenoid valve 26, used to control the inflation volume, inflation duration, and airbag inflation sequence of the air pump 25.

[0079] In one specific embodiment, one end of the pressure sensor is connected to the main circuit between the air pump 25 and the airbags. All airbags share a single pressure sensor, enabling synchronized pressure massage from multiple airbags and saving costs. The pressure sensor, in conjunction with the control circuit, converts air pressure into voltage, and then converts the voltage into an analog quantity via an analog-to-digital converter, thereby enabling real-time pressure monitoring. When one airbag is inflated, the pressure sensor detects the pressure within that airbag. When multiple airbags are inflated simultaneously, the pressure sensor detects the pressure within all the airbags currently inflating, at which point the pressure values ​​of the multiple parallel airbags are equal.

[0080] The other end of the pressure sensor is connected to the massage control unit, converting the detected pressure value into an electrical signal and transmitting it to the massage control unit. Based on the feedback from the pressure sensor, the massage control unit controls the inflation volume, inflation duration, and inflation sequence of the air pump 25. Specifically, the massage control unit adjusts the operating time or power of the air pump 25 based on the pressure sensor feedback to control the pressure inside the airbags to reach a preset value. Through a timer or program logic, the inflation and deflation time of each airbag is controlled to achieve different massage modes. According to the preset massage program, the on / off state of the solenoid valve 26 is controlled sequentially to achieve the sequential inflation and deflation of the airbags, simulating different massage techniques.

[0081] Each airbag corresponds to a solenoid valve 26, used to independently control the inflation and deflation of the airbag. Screws 23 and pressure plates 24 fix the solenoid valve 26 to the lower housing 27. The solenoid valve 26 is a two-position three-way solenoid valve, controlled by input / output. The three ports are connected to the air pump 25 outlet, the airbag inlet, and the atmospheric vent, respectively. When the solenoid valve 26 is powered, the air pump 25 outlet and the airbag inlet are connected, inflating the airbag; when the solenoid valve 26 is de-energized, the airbag and the atmospheric vent are connected, deflating the airbag.

[0082] Pulse width modulation (PWM) output can be generated by configuring the timer to PWM output mode. The pulse width can be set through a comparison register. Changing the pulse width changes the power of the air pump 25, thereby changing the amount of gas produced. The pressure sensor detects the airbag pressure in real time and feeds it back to the main control board 22. The main control board 22 compares the feedback pressure with the target pressure set by the user and then adjusts the pulse width in real time to change the frequency of the air pump 25.

[0083] The inflation / deflation process is as follows: The control system first starts the air pump 25 to generate gas, then opens the solenoid valve 26 of the corresponding airbag to inflate it. The pressure sensor monitors the pressure inside the airbag in real time. When the pressure reaches the set value, the air pump 25 stops inflating and enters the pressure holding state. After the pressure holding is completed, the air pump 25 and the solenoid valve 26 of the next airbag are opened to continue inflating the next airbag. When the pressure reaches the set value, the air pump 25 stops inflating and enters the pressure holding state. This process continues until all airbags have completed one cycle, at which point a cycle interval is entered. After the cycle interval is completed, the next cycle begins. When the massage time reaches the user's set value, the airbag deflates, the operation stops, and the knee massage function is completed.

[0084] The massage control unit sequentially controls the inflation and deflation of each airbag according to preset massage modes to achieve different massage effects and meet various user needs. For user convenience, the device can be equipped with three built-in treatment modes as well as a custom treatment mode; the three treatment modes are front knee massage, back knee pressure, and automatic mode.

[0085] Knee massage mode: Without deflating the third airbag 3, first inflate the first airbag 1, then deflate it, then inflate and deflate the second airbag 2, repeating this inflation / deflation process 10 times. Next, inflate and pressurize the fourth airbag 4 without deflating it, while simultaneously inflating and deflating the first airbag 1, then inflating and deflating the second airbag 2, repeating this inflation / deflation process 5 times. Then deflate them simultaneously, and inflate the third airbag 3, first airbag 1, second airbag 2, and fourth airbag 4 in sequence until all airbags are fully inflated, then deflate them simultaneously. Repeat this cycle.

[0086] Knee compression pattern: First, inflate the first airbag 1 and the second airbag 2 simultaneously, then deflate them. Next, inflate the third airbag 3, then deflate it. Repeat this inflation pattern 10 times. Then, inflate the fourth airbag 4 without deflating it. Repeat this inflation pattern 5 times for the first airbag 1, the second airbag 2, and the third airbag 3. Then deflate them simultaneously. Inflate the first airbag 1, the second airbag 2, the third airbag 3, and the fourth airbag 4 in sequence. After all airbags are fully inflated, deflate them simultaneously. Repeat this cycle.

[0087] Automatic mode: Knee front massage mode + knee back pressure mode, which can be repeated automatically.

[0088] Users can choose to turn any airbag on or off, and can customize the inflation sequence.

[0089] For example, if the user chooses to activate only the first airbag 1, then only the first airbag 1 will be inflated, pressurized, deflated, and cycled in a loop.

[0090] For example, if the user activates the first airbag 1 and the second airbag 2, and the inflation sequence is the first airbag 1 and the second airbag 2, then the inflation will proceed in a cycle of the following: first airbag 1 inflates, first airbag 1 maintains pressure, first airbag 1 deflates, cycle interval, second airbag 2 inflates, second airbag 2 maintains pressure, second airbag 2 deflates, cycle interval.

[0091] For example, if the user activates the first airbag 1, the second airbag 2, and the third airbag 3, and the inflation sequence is the second airbag 2, the third airbag 3, and the first airbag 1, then the inflation process will proceed in a cycle of: inflating the second airbag 2, maintaining pressure in the second airbag 2, deflating the second airbag 2, with a cycle interval; inflating the third airbag 3, maintaining pressure in the third airbag 3, deflating the third airbag 3, with a cycle interval; inflating the first airbag 1, maintaining pressure in the first airbag 1, deflating the first airbag 1, with a cycle interval.

[0092] For example, if the user fully deploys the first airbag 1, the second airbag 2, the third airbag 3, and the fourth airbag 4, with the inflation sequence being the second airbag 2, the third airbag 3, the first airbag 1, and the fourth airbag 4, then the inflation process will proceed in a cycle: inflating the second airbag 2, maintaining pressure in the second airbag 2, deflating the second airbag 2, and repeating this cycle; inflating the third airbag 3, maintaining pressure in the third airbag 3, deflating the third airbag 3, and repeating this cycle; inflating the first airbag 1, maintaining pressure in the first airbag 1, deflating the first airbag 1, and repeating this cycle; inflating the fourth airbag 4, maintaining pressure in the fourth airbag 4, deflating the fourth airbag 4, and repeating this cycle.

[0093] In the above embodiments, the pressure control module, through the coordinated operation of the pressure sensor, solenoid valve 26 and massage control unit, achieves precise control over the inflation and deflation process of the airbag, which not only achieves diverse massage effects, but also ensures the safety and reliability of the device, bringing users a comfortable massage experience.

[0094] Based on the above specific embodiments, the airbag includes a first airbag 1 and a second airbag 2 located on both sides of the front leg, a third airbag 3 located at the upper joint of the knee, a fourth airbag 4 and a fifth airbag 5 located on the left and right sides of the knee, and a sixth airbag 6 located in the groin area of ​​the knee. The first airbag 1 and the second airbag 2 form an angle of 55°-65°, the third airbag 3 is located on both sides of the fourth airbag 4 and the fifth airbag 5, and the sixth airbag 6 is located on the lower outer side of the fourth airbag 4.

[0095] In one specific embodiment, the first airbag 1 and the second airbag 2 are positioned on both sides of the leg in front of the knee, which can perfectly wrap around the muscles of the lower leg in front of the knee for massage. The first airbag 1 and the second airbag 2 form an angle of approximately 60°, which can better conform to the curve of the leg and provide a more comfortable massage experience.

[0096] The third airbag 3 is located directly above the knee, at the upper joint position of the knee. When inflated, it creates downward pressure to massage the main body of the knee.

[0097] The fourth airbag 4 and the fifth airbag 5 are located on the left and right sides of the knee, symmetrically arranged. When inflated, they will simultaneously generate inward pressure to squeeze and massage both sides of the knee joint.

[0098] After the protective sleeve is secured, the sixth airbag 6 compresses the back of the knee, a key area for knee joint movement, and massages the back of the knee.

[0099] The aforementioned multi-airbag design can achieve full coverage of the knee, meeting the massage needs of different parts.

[0100] Based on the above specific embodiments, the upper part of the protective sleeve is provided with an air nozzle base 8, and the air nozzle base 8 is provided with an air nozzle hole 7 that is independently connected to each airbag. The air nozzle opening of the air nozzle seat 28 of the control box 20 is connected to the air nozzle hole 7 of the air nozzle base 8 in a one-to-one correspondence. When the protective sleeve is tied to the knee, the control box 20 is located on the thigh above the knee.

[0101] In one specific embodiment, the air nozzle seat 28 of the control box 20 corresponds one-to-one with the air nozzle base 8 on the sheath. The air nozzle opening of the air nozzle seat 28 is directly connected to the air nozzle hole 7 of the air nozzle base 8, and then fixed with screws to ensure that the air nozzle does not leak. Each airbag has an independent air nozzle, and each part of the airbag can be inflated individually or in combination.

[0102] When the knee brace is worn on the knee, covering the knee and surrounding area, multiple airbags massage the knee to relieve fatigue and pain. At this time, the control box 20 is located on the thigh above the knee, allowing the user to operate the buttons or display on the control box 20 to select the massage mode, intensity, and time without bending over or moving the brace.

[0103] Based on the above specific embodiments, the sixth airbag 6 has a ventilation section that overlaps with the fourth airbag 4. The sixth airbag 6 has multiple spaced perforated strips at the overlapping position, and ventilation channels are formed at the intervals of the perforated strips.

[0104] In one specific embodiment, to facilitate the connection between the air nozzle hole 7 of the sixth airbag 6 and the air nozzle of the control box 20, the air nozzle of the sixth airbag 6 needs to be positioned directly below the control box 20. Therefore, the sixth airbag 6 needs to extend to the position of the control box 20, at which point the sixth airbag 6 and the fourth airbag 4 overlap. To avoid mutual compression between the sixth airbag 6 and the fourth airbag 4, several perforated strips are provided at the overlapping area. Air passages are formed on both sides of the perforated strips and at the intervals between the perforated strips, ensuring that the sixth airbag 6 can be inflated smoothly. Furthermore, the inflation deformation of the perforated strip area is small, which does not affect the inflation of the fourth airbag 4, thus ensuring the massage effect of the fourth airbag 4.

[0105] Based on the above specific embodiments, since the fourth airbag 4 is the massage position and the ventilation part is the channel for inflating the sixth airbag 6, the ventilation part is located on the outside of the fourth airbag 4, so that the fourth airbag 4 directly contacts the leg to ensure the best massage effect.

[0106] Based on the above specific embodiments, the hollow strip is set along the bending direction of the knee. There is less air in the hollow strip, so the resistance is smaller when the knee bends and it is easier to bend. It also has less squeezing interference with the fourth airbag 4.

[0107] Based on the above specific embodiments, the sheath has a strap with Velcro 9 on one side of the sixth airbag 6, and a fixing ring that cooperates with the strap on the other side. The Velcro 9 near the edge is tucked inside the edging. In use, the Velcro 9 is inserted into the fixing ring of the strap for fastening. The strap strengthens the fixation of the sixth airbag 6, allowing the sheath to fit better and more securely, and preventing it from loosening during use.

[0108] The sheath can consist of four layers. The outer layers are made of reverse composite satin fabric, the inner lining is made of twill fabric, and the interior contains an airbag and heating module 15. The outer contour is bound with stitching, and the stitching is straight and even, without any excess thread or leaks.

[0109] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0110] The knee massager provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, this utility model is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A knee massager, characterized in that, The device includes a sheath and a control box (20). The sheath includes multiple airbags covering multiple positions on the knee and a heating module (15) located under the airbags. The control box (20) integrates a control system, which includes an air pump (25) connected to each airbag, a pressure control module connected to the air pump (25) for controlling the air pressure in the airbags and the massage mode, a heating plate (29) connected to the heating module (15), and a temperature control module connected to the heating plate (29) for controlling the heating module (15) to stop heating when the temperature of the heating module (15) reaches a first preset temperature. The device also includes a temperature control switch (19) connected to the heating module (15) for controlling its switch to turn off when the heating module (15) is detected to reach a second preset temperature, wherein the second preset temperature is higher than the first preset temperature.

2. The knee massager according to claim 1, characterized in that, The heating module (15) includes a heating layer, a heating wire (16) and a heating plug (18). The heating wire (16) is disposed on the heating layer. One end of the heating wire (16) is connected to the heating plug (18) and the other end is connected to the temperature control switch (19). The other end of the temperature control switch (19) is connected to the heating plug (18). The heating plug (18) is connected to the heating plate (29).

3. The knee massager according to claim 2, characterized in that, The temperature control module includes: Temperature sensor (17) for detecting the temperature of the heating wire (16); A first temperature protection unit connected to the temperature sensor (17) and used to control the heating wire (16) to stop heating when the temperature detected by the temperature sensor (17) exceeds a first preset temperature.

4. The knee massager according to claim 2, characterized in that, The temperature control module includes a second temperature protection unit connected to the temperature control switch (19). The second temperature protection unit is used to control the heating wire (16) to cut off the output within a set time when it receives the disconnect signal from the temperature control switch (19), and the output cannot be automatically restored.

5. The knee massager according to claim 2, characterized in that, The heating layer comprises, from the inside out, a first nylon fabric (13), a non-woven fabric (12), a sponge fabric (11), and a second nylon layer (10). The heating module (15) is sewn onto the non-woven fabric (12) and its other side is in contact with the sponge fabric (11).

6. The knee massager according to claim 1, characterized in that, The pressure control module includes: A pressure sensor is used to detect the pressure inside the airbag that is currently being inflated. All the airbags share one pressure sensor, one end of which is connected to the air pump (25) and the airbag in the main line. Multiple solenoid valves (26) are used to control the inflation and deflation states of each of the airbags respectively. A massage control unit connected to the air pump (25), the pressure sensor, and the solenoid valve (26) for controlling the inflation volume, inflation duration, and inflation sequence of the airbag of the air pump (25).

7. The knee massager according to claim 1, characterized in that, The airbags include a first airbag (1) and a second airbag (2) located on both sides of the front leg, a third airbag (3) located at the upper joint of the knee, a fourth airbag (4) and a fifth airbag (5) located on the left and right sides of the knee, and a sixth airbag (6) located in the groin of the knee. The first airbag (1) and the second airbag (2) form an angle of 55°-65°. The third airbag (3) is located on both sides of the fourth airbag (4) and the fifth airbag (5). The sixth airbag (6) is located on the lower outer side of the fourth airbag (4).

8. The knee massager according to claim 7, characterized in that, The upper part of the protective sleeve is provided with an air nozzle base (8), and the air nozzle base (8) is provided with an air nozzle hole (7) that is independently connected to each airbag. The air nozzle port of the air nozzle seat (28) of the control box (20) is connected to the air nozzle hole (7) of the air nozzle base (8) in a one-to-one correspondence. When the protective sleeve is tied to the knee, the control box (20) is located on the thigh above the knee.

9. The knee massager according to claim 8, characterized in that, The sixth airbag (6) has a ventilation section that overlaps with the fourth airbag (4). The sixth airbag (6) has multiple spaced perforated strips at the overlapping position, and ventilation channels are formed at the intervals of the perforated strips.

10. The knee massager according to claim 9, characterized in that, The ventilation section is located on the outside of the fourth airbag (4), the hollow strip is arranged along the bending direction of the knee, the sheath is provided with a strap with Velcro (9) on one side of the sixth airbag (6), and a fixing ring that cooperates with the strap is provided on the other side.

Images