Massage mechanism of massage chair self-adaptive to leg length

Abstract

The utility model discloses a massage mechanism of a massage chair self-adaptive to leg lengths. The massage mechanism aims at solving the problem that a traditional massage chair cannot be self-adaptive to users with different leg lengths. The device comprises a foot massage mechanism, a leg massage mechanism, a slidable telescopic mechanism, an air bag, a foot in-place sensor, a leg in-place sensor, an intelligent controller and an electromagnetic reversing valve. Whether the feet and the legs of a user are in place or not is detected through the sensors, the intelligent controller controls the electromagnetic reversing valves according to feedback signals, inflation and deflation of the air bags are achieved, and the relative distance between the two massage mechanisms is adjusted to adapt to different leg lengths.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment technology, and in particular to a massage mechanism for an adaptive leg length massage chair. Background Technology

[0002] In modern life, with people placing increasing emphasis on health and wellness, massage chairs, as a common home leisure and health care device, are experiencing growing market demand. However, traditional massage chairs have significant design flaws; the relative distance between their foot and leg massage mechanisms remains fixed, employing a generic design. This one-size-fits-all approach fails to cater to the needs of users with varying leg lengths, causing inconvenience for many.

[0003] For users with longer legs, the foot massage mechanism of a traditional massage chair often cannot fully support the feet, causing the feet to dangle. At the same time, the leg massage area is difficult to accurately target the leg muscle groups, failing to effectively exert the massage effect. This makes it difficult for users to obtain a comfortable experience during the massage, and may even cause physical fatigue or injury due to prolonged uncomfortable posture.

[0004] Users with shorter legs also face similar challenges. Due to the fixed relative distance, their legs are easily overstretched, and their feet may become unstable or have difficulty making good contact with the massage components. This not only reduces the comfort of the massage but may also affect the health benefits of the massage, limiting the user's normal use of the massage chair.

[0005] Although some technological attempts have been made to improve this, such as the utility model patent CN 116098783 A entitled "A Leg Massager Stretching Device for a Massage Chair," which discloses a solution using airbags to adjust the relative distance between the foot massage mechanism and the leg massage mechanism, unfortunately, it cannot automatically adjust according to the user's leg length, failing to achieve a truly adaptive function. Users still need to manually adjust it before use, which is cumbersome and difficult to precisely adapt to individual leg lengths, failing to meet current users' pursuit of a convenient and intelligent massage experience.

[0006] Therefore, developing a massage mechanism for an adaptive leg length massage chair has become an urgent problem for those skilled in the art. Utility Model Content

[0007] The present invention addresses the aforementioned shortcomings by providing a massage mechanism for an adaptive leg length massage chair.

[0008] The above-mentioned objective of this utility model is achieved through the following technical solution: a massage mechanism for an adaptive leg length massage chair, comprising a foot massage mechanism, a leg massage mechanism, an airbag, an electromagnetic reversing valve, an intelligent controller, a foot positioning sensor, a leg positioning sensor, and an air source. A slidable telescopic mechanism is installed between the foot massage mechanism and the leg massage mechanism, allowing them to slide relative to each other. The airbag is installed between the foot massage mechanism and the leg massage mechanism.

[0009] The electromagnetic reversing valve is provided with an air inlet P, a working port A, a working port B and an exhaust port R. The air outlet of the air source is connected to the air inlet P through a pressure-resistant air pipe. The working port A is connected to the air inlet of the airbag. The exhaust port of the airbag is connected to the working port B. The working port B is connected to the exhaust port R. The intelligent controller is connected to the electromagnetic reversing valve through a wire.

[0010] The foot positioning sensor and the leg positioning sensor are respectively installed on the foot massage mechanism and the leg massage mechanism, and are connected to the intelligent controller.

[0011] When inflation is needed, the solenoid valve is energized and switched to the inflation position, allowing gas from the air source to flow smoothly into the airbag through the air inlet P and the working port A, achieving rapid inflation. When neither inflation nor deflation is needed, the solenoid valve switches to the closed air circuit state; when deflation is needed, the solenoid valve is energized and switched to the deflation state, allowing gas in the airbag to be discharged into the outside atmosphere through the working port B and then through the exhaust port R of the solenoid valve, completing the deflation operation.

[0012] Furthermore, the lower end of the airbag is connected to a foot massage mechanism, and the upper end of the airbag is connected to a leg massage mechanism.

[0013] Furthermore, the foot positioning sensor is located at the heel of the foot massage mechanism.

[0014] Furthermore, the leg positioning sensor is disposed on the side wall and rear wall of the calf placement groove of the leg massage mechanism.

[0015] Furthermore, a pressure sensor is installed at the air inlet of the airbag, and the pressure sensor is connected to the intelligent controller. The pressure sensor is used to monitor the pressure inside the airbag and feed the signal back to the intelligent controller. The intelligent controller controls the operation of the electromagnetic reversing valve according to a preset pressure range to ensure the safe and reliable operation of the airbag.

[0016] Furthermore, the slidable telescopic mechanism includes a guide rail and a slider. The slider is fixedly connected to the foot massage mechanism or the leg massage mechanism, and the guide rail is fixedly connected to another mechanism. A tension spring connects the foot massage mechanism and the leg massage mechanism. The tension spring serves to assist in resetting and buffering. When the airbag deflates and contracts, it helps the two mechanisms to move closer together and reset, ensuring the smooth operation of the mechanism. In specific connection, the slider can be fixed to the corresponding mounting surface of the foot massage mechanism or the leg massage mechanism using bolts, nuts, or other connecting parts. The guide rail is also firmly fixed to the other mechanism. The two ends of the tension spring are hooked onto the preset connection points of the foot massage mechanism and the leg massage mechanism, respectively, ensuring reliable connection and even force distribution.

[0017] The working principle of this invention is as follows: When the user sits on the massage chair and positions their feet, the foot and leg positioning sensors immediately monitor their position. If the feet are in position but the legs are not, it means the legs are longer. The foot positioning sensor sends a signal to the intelligent controller, which then energizes the electromagnetic reversing valve to inflate the airbag according to a preset program. The air source gas inflates the airbag through the air tube, pushing the foot and leg massage mechanisms to slide relative to each other, increasing the distance until the legs are in position. Conversely, if the legs are in position but the feet are not, meaning the legs are shorter, the leg positioning sensor sends a feedback signal, and the intelligent controller controls the electromagnetic reversing valve to deflate the airbag. The airbag contracts, and the tension spring helps the foot massage mechanism move closer to the leg massage mechanism, reducing the distance until the feet are in position. The air pressure sensor can also monitor the airbag pressure in real time. When the pressure is insufficient, it can replenish the airbag to ensure safe and stable operation, allowing users to comfortably enjoy a personalized massage.

[0018] Further explanation of the components in this utility model:

[0019] Foot massage mechanism: Used to massage the user's feet, it can be equipped with multiple massage balls, which are driven by a drive motor to rotate, stimulating acupoints on the soles of the feet and providing a comfortable foot massage experience. The drive motor is electrically connected to an intelligent controller, so that the intelligent controller can precisely control the operation of the drive motor according to different massage modes selected by the user, such as adjusting the speed and direction of the massage balls, to achieve diverse foot massage effects.

[0020] Leg massage mechanism: Used to massage the user's legs, it can employ airbag massage components and / or roller massage components. The airbag massage component provides a gentle squeezing massage and is independently controlled with the airbags for adjusting the relative distance, meeting the user's different massage intensity needs for the legs; the roller massage component is driven by an independent drive motor, simulating human hand massage through the rolling of the rollers, and is also controlled by an intelligent controller, allowing the user to choose to turn it on or off and adjust its operating status according to their preferences.

[0021] Airbag: Located between the foot massage mechanism and the leg massage mechanism, it is the core component for adjusting the relative distance between the two. By inflating and deflating the airbag, the spatial distance between the two mechanisms is changed to accommodate different users' leg lengths. One end of the airbag is connected to the working port of the solenoid reversing valve through a pressure-resistant air tube, ensuring smooth and leak-free gas flow. The connection points between the air tube and the airbag / solenoid reversing valve can be reinforced and sealed using sealant, clamps, or other methods to ensure the stability of gas transmission.

[0022] Foot and leg positioning sensors: These are installed on the foot and leg massage mechanisms respectively to detect in real time whether the user's feet and legs are properly positioned. These sensors transmit the detection signals to the intelligent controller promptly, providing crucial information for subsequent adaptive adjustments. The sensors can be installed on their respective mechanisms using methods such as welding, gluing, or clip-on mounting to ensure secure installation and stable signal transmission. For example, the foot positioning sensor can be installed at the front edge of the foot massage mechanism to accurately sense foot placement; the leg positioning sensor can be installed at an appropriate height on the leg massage mechanism to accurately determine whether the legs are properly positioned.

[0023] The intelligent controller, serving as the control center of the entire system, is electrically connected to both the foot and leg positioning sensors, receiving and rapidly processing signals from them. Simultaneously, the intelligent controller is also electrically connected to the solenoid valve, precisely controlling its operation based on sensor feedback signals, thereby achieving automatic control of airbag inflation and deflation. The intelligent controller can be a programmable logic controller (PLC) or a microcontroller (MCU), possessing powerful data processing capabilities and rapid command transmission capabilities to ensure efficient system operation. The intelligent controller is connected to each sensor and solenoid valve via electrical wires. The wire sheaths are insulated to prevent short circuits, and the connection ports use plug-and-socket designs for easy installation, disassembly, and maintenance.

[0024] Electromagnetic reversing valve: Working in conjunction with and controlled by the intelligent controller, it controls the inflation and deflation process of the airbag. Its inlet connects to the air source, its working port connects to the airbag, and its exhaust port is used to expel gas. The inlet of the electromagnetic reversing valve is tightly connected to the air source via a pressure-resistant air pipe, and the pipe connection is also sealed to prevent gas leakage. The connections between the working port and the airbag, and between the exhaust port and the outside atmosphere, also meet corresponding sealing and stability requirements to ensure precise control of gas flow. When the intelligent controller receives a signal that the leg or foot is not in position, it sends a command to the electromagnetic reversing valve according to a preset program, causing it to switch its working state and realize the inflation or deflation operation of the airbag.

[0025] Air Source: Provides a stable gas supply for the airbags. The air source is connected to the air inlet of the solenoid reversing valve via a pressure-resistant air tube, ensuring no gas leakage during delivery and guaranteeing smooth inflation and deflation of the airbags. The air source can be fixedly installed at the bottom of the massage chair or other suitable locations, with its position secured by brackets, bolts, and other fasteners. The pressure-resistant air tube is laid along the internal frame of the massage chair or a pre-set groove to prevent the air tube from being squeezed or worn, ensuring safe gas delivery.

[0026] The advantages of this invention compared to existing technologies are as follows: Compared to existing massage chairs that require manual adjustment of the distance between the foot and leg massage mechanisms, this invention uses foot and leg positioning sensors, an intelligent controller, and an electromagnetic reversing valve to automatically sense and adjust the distance between them, adapting to different leg lengths. The system responds in real time when the user sits down or changes posture, ensuring precise alignment of the feet and legs, preventing them from being suspended or misaligned, and improving massage comfort and effectiveness. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of one side of this utility model.

[0028] Figure 2 This is a three-dimensional structural diagram of the other side of this utility model.

[0029] Figure 3 This is a side view of the structure of this utility model.

[0030] Figure 4 This is a schematic diagram of the pipeline connection of this utility model.

[0031] Figure 5 This is a schematic diagram of the structure of this utility model installed on a massage chair. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] like Figures 1 to 4As shown, a massage mechanism for an adaptive leg-length massage chair includes a foot massage mechanism 1, a leg massage mechanism 2, an airbag 3, an electromagnetic reversing valve 4, an intelligent controller 5, a foot positioning sensor 6, a leg positioning sensor 7, and an air source 8. A slidable telescopic mechanism 9 is installed between the foot massage mechanism 1 and the leg massage mechanism 2, allowing them to slide relative to each other. The slidable telescopic mechanism 9 includes a guide rail 901 and a slider 902. The slider 902 is fixedly connected to either the foot massage mechanism 1 or the leg massage mechanism 2, and the guide rail 901 is fixedly connected to another mechanism. A tension spring 903 connects the foot massage mechanism 1 and the leg massage mechanism 2. The tension spring 903 serves to assist in resetting and buffering; when the airbag 3 deflates and contracts, it helps the two mechanisms to move closer together and reset, ensuring the smooth operation of the mechanism. In specific connection, the slider 902 can be fixed to the corresponding mounting surface of the foot massage mechanism 1 or the leg massage mechanism 2 by bolts, nuts and other connecting parts. The guide rail 901 is also fixed to the other mechanism in a firm manner. The two ends of the tension spring 903 are hooked to the preset connection points of the foot massage mechanism 1 and the leg massage mechanism 2 respectively to ensure reliable connection and uniform force.

[0034] The airbag 3 is installed between the foot massage mechanism 1 and the leg massage mechanism 2. The lower end of the airbag 3 is connected to the foot massage mechanism 1, and the upper end of the airbag 3 is connected to the leg massage mechanism 2. A pressure sensor 10 is provided at the air inlet of the airbag 3, and the pressure sensor 10 is connected to the intelligent controller 5. The pressure sensor 10 is used to monitor the pressure inside the airbag 3 and feed the signal back to the intelligent controller 5. The intelligent controller 5 controls the operation of the electromagnetic reversing valve 4 according to a preset pressure range to ensure that the airbag 3 operates safely and reliably.

[0035] The electromagnetic reversing valve 4 is provided with an air inlet P, a working port A, a working port B and an exhaust port R. The air outlet of the air source 8 is connected to the air inlet P through a pressure-resistant air pipe. The working port A is connected to the air inlet of the airbag 3. The exhaust port of the airbag 3 is connected to the working port B. The working port B is connected to the exhaust port R. The intelligent controller 5 is connected to the electromagnetic reversing valve 4 through a wire.

[0036] The foot positioning sensor 6 is installed at the heel of the foot massage mechanism 1, and the leg positioning sensor 7 is installed on the side wall and rear wall of the calf placement groove of the leg massage mechanism 2. The foot positioning sensor 6 and the leg positioning sensor 7 are connected to the intelligent controller 5.

[0037] When inflation is required, the solenoid valve 4 is energized and switched to the inflation position, allowing gas from the air source 8 to flow smoothly into the airbag 3 through the air inlet P and the working port A, achieving rapid inflation. When neither inflation nor deflation is required, the solenoid valve 4 switches to the closed air circuit state; when deflation is required, the solenoid valve 4 is energized and switched to the deflation state, allowing gas in the airbag 3 to be discharged into the outside atmosphere through the working port B and then through the exhaust port R of the solenoid valve 4, completing the deflation operation.

[0038] When a user is ready to use the massage chair, they first sit on it and place their legs naturally in the corresponding positions of the foot massage mechanism 1 and the leg massage mechanism 2. At this time, the foot positioning sensor 6 and the leg positioning sensor 7 monitor the placement of the user's feet and legs in real time and transmit the detected signals to the intelligent controller 5.

[0039] Assuming the user has long legs, after placing their foot on the foot massage mechanism 1, the foot positioning sensor 6 detects that the foot is in position, but the leg is not fully in contact with the appropriate position on the leg massage mechanism 2. The leg positioning sensor 7 then transmits a signal indicating that the foot is not fully in position to the intelligent controller 5. Upon receiving the signal, the intelligent controller 5, according to a pre-set program, sends a control signal to the electromagnetic reversing valve 4, energizing it and switching it to the inflation state. Under pressure, gas from the air source 8 enters the air inlet of the electromagnetic reversing valve 4 through a pressure-resistant air pipe, and then flows into the airbag 3 through the working port. As the airbag 3 is inflated, it gradually expands, generating an outward thrust that pushes the foot massage mechanism 1 and the leg massage mechanism 2 to slide relative to each other. Due to the presence of the sliding telescopic mechanism 9, the two can move smoothly relative to each other, increasing the distance between them. During this process, the tension spring 903 is stretched, storing a certain amount of elastic potential energy. When the leg positioning sensor 7 detects that the leg is in position, that is, the optimal position suitable for the user's leg length is reached, the intelligent controller 5 controls the electromagnetic reversing valve 4 to stop the inflation action. At this time, the user's legs and feet can fit well with the corresponding massage mechanism and begin to enjoy a comfortable massage service.

[0040] Conversely, if the user has short legs, after placing their legs on the leg massage mechanism 2, the leg positioning sensor 7 detects that the legs are in position, while the feet are suspended in the air. The foot positioning sensor 6 sends a signal to the intelligent controller 5. The intelligent controller 5 controls the electromagnetic reversing valve 4 to release air, and the air in the airbag 3 is discharged through the exhaust port, causing the airbag 3 to contract. Under the elastic potential energy of the tension spring 903, the foot massage mechanism 1 moves closer to the leg massage mechanism 2, reducing the distance between them. When the foot positioning sensor 6 detects that the feet are in position, the intelligent controller 5 stops releasing air, ensuring that the user's feet can comfortably receive a massage.

[0041] During the massage, the air pressure sensor 10 at the air inlet of the airbag 3 continuously monitors the pressure inside the airbag 3. Once the pressure exceeds the preset safety upper limit or falls below the lower limit, it immediately sends a signal to the intelligent controller 5. The intelligent controller 5 then promptly controls the electromagnetic reversing valve 4 to make corresponding deflation or inflation adjustments to ensure the stable working state of the airbag 3 and guarantee the safe use of the massage chair.

[0042] Users can also select different massage modes via the intelligent controller 5 according to their needs, such as strong, medium, and weak massage intensity for the feet, and different combinations of airbag 3 compression and roller massage for the legs. The intelligent controller 5 controls the corresponding drive motors, airbag 3 components, and other actuators based on the user's selected mode, providing a personalized massage experience.

[0043] The massage mechanism of this utility model is integrally connected to the main body 11 of the massage chair, such as... Figure 5 As shown.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A massage mechanism for an adaptive leg length massage chair, characterized in that: It includes a foot massage mechanism, a leg massage mechanism, an airbag, an electromagnetic reversing valve, an intelligent controller, a foot positioning sensor, a leg positioning sensor, and an air source. A sliding telescopic mechanism is installed between the foot massage mechanism and the leg massage mechanism, allowing them to slide relative to each other. The airbag is installed between the foot massage mechanism and the leg massage mechanism. The electromagnetic reversing valve is provided with an air inlet P, a working port A, a working port B and an exhaust port R. The air outlet of the air source is connected to the air inlet P through a pressure-resistant air pipe. The working port A is connected to the air inlet of the airbag. The exhaust port of the airbag is connected to the working port B. The working port B is connected to the exhaust port R. The intelligent controller is connected to the electromagnetic reversing valve through a wire. The foot positioning sensor and the leg positioning sensor are respectively installed on the foot massage mechanism and the leg massage mechanism, and are connected to the intelligent controller.

2. The massage mechanism of the adaptive leg length massage chair according to claim 1, characterized in that: The lower end of the airbag is connected to the foot massage mechanism, and the upper end of the airbag is connected to the leg massage mechanism.

3. The massage mechanism of the adaptive leg length massage chair according to claim 1, characterized in that: The foot positioning sensor is located at the heel of the foot massage mechanism.

4. The massage mechanism of the adaptive leg length massage chair according to claim 1, characterized in that: The leg positioning sensor is located on the side wall and rear wall of the calf placement groove of the leg massage mechanism.

5. The massage mechanism of an adaptive leg length massage chair according to claim 1, characterized in that: The airbag is equipped with a pressure sensor at its air inlet, and the pressure sensor is connected to the intelligent controller.

6. The massage mechanism of an adaptive leg length massage chair according to claim 1, characterized in that: The sliding telescopic mechanism includes a guide rail and a slider. The slider is fixedly connected to a foot massage mechanism or a leg massage mechanism, the guide rail is fixedly connected to another mechanism, and a tension spring connects the foot massage mechanism and the leg massage mechanism.

7. The massage mechanism of an adaptive leg length massage chair according to claim 1, characterized in that: The foot massage mechanism includes multiple massage balls and a drive motor that drives the massage balls to rotate. The drive motor is electrically connected to the intelligent controller.

8. The massage mechanism of an adaptive leg length massage chair according to claim 1, characterized in that: The leg massage mechanism includes an airbag massage component and / or a roller massage component. The airbag massage component is independently controlled from the airbag, and the roller massage component is driven by an independent drive motor, which is electrically connected to the intelligent controller.

9. The massage mechanism of an adaptive leg length massage chair according to claim 1, characterized in that: The intelligent controller is a programmable logic controller (PLC) or a microcontroller (MCU).

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