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Health massage chair solution
With the development of social economy, the acceleration of the pace of life and the increase of work pressure, people pay more and more attention to health. Due to the widespread use of personal computers in homes and offices, shoulder stiffness has become a common disease. As a health care device that can eliminate human fatigue, massage chairs are popular among consumers, and they are more and more commonly used in ordinary people's homes. At present, in the electric massage chair market, imported, joint venture and domestic products coexist. Relatively speaking, imported products have powerful functions, rich massage methods, and beautiful appearance, but their prices are also very expensive. Domestic products have relatively simple functions and relatively low product prices, but at least 3,000 yuan is required. According to market research on massage chairs at home and abroad, the existing products have complex structure, high cost, inconvenient handling and disassembly, and most of them do not have massage on both sides of the waist. Based on this innovative design and manufacture of a health massage chair with various functions, it provides a massage chair with simple structure, multiple functions and economic benefits for the massage chair market to meet the health massage needs of the masses.
1. Performance Analysis of Health Massage Chair
The main products and performance analysis of multi-functional massage chairs in foreign and domestic markets are as follows. (1) Figure 1 shows domestic massage chair products, and its performance analysis is as follows: two products are two types of multifunctional massage chairs produced by a domestic manufacturer, with back and leg massage functions, and the back massage is fixed on the massage chair. The rotating movement of the massage head on the chair is realized. A motor drives a massage head. The massage head can only rotate but not move, and the massage range is small. Overall, it can be seen that the two products have single functions, complex structures, and high costs. (2) Figure 2 shows foreign massage chair products. The performance analysis is as follows: the two products are multi-functional massage chairs produced by a foreign manufacturer. They not only have back and leg massage functions, but also have automatic massage programs. You can choose the corresponding massage program according to your needs. Overall, it can be seen that the two products have relatively complete functions, complex structures, difficult maintenance and complicated operations, and ordinary users cannot quickly and skillfully use them.
According to the above analysis, the existing product features are as follows:
(1) The massage head cannot be moved, one motor drives one massage head, the massage range is small, and many motors are used;
(2) Thumping or rotating massage methods may cause physical damage to the user;
(3) Most of them do not have waist massage, and other fitness equipment such as treadmills rely on the vibration of the waist vibration belt to achieve waist massage;
(4) The structure is complex, the cost is high, and it is inconvenient to carry and disassemble.
2. Design concept of multifunctional massage chair
Based on the above investigation and research on massage chairs in the market, multiple functions of the massage chair have been realized by adopting innovative and optimized designs, such as the innovative design of the main drive shaft, which realizes a motor to control the movement of the back and waist; using movable pulleys and fixed pulleys , steel cable and limit switch for back rolling massage; use tilting massage disc for waist massage. Its innovative design idea is shown in Figure 1.
3. Overall scheme design of multifunctional massage chair
3.1 Function realization
This massage chair has back, waist and foot massage functions. The massage chair drives the gear reducer by controlling the DC motor to drive the drive shaft to rotate. The main drive shaft has a square structure at both ends, and the working part is controlled in two ways. One way is that the sprocket mechanism can move axially on the main transmission shaft through the clamping device, thereby realizing the adjustable position of the waist massage disc; through the shape and position fit, the main transmission shaft rotates, driving the circumferential rotation of the sprocket mechanism , to drive the massage disc to rotate to realize waist massage. The other way drives the back massage wheel to roll back and forth up and down through the fixed pulley, movable pulley, steel cable and limit switch to realize rolling massage on the back. This massage chair also increases the foot roller massage that can be stretched and dragged, and users can choose according to their own needs. Its transmission principle is shown in Figure 2.
3.2 Analysis of transmission system control principle
The control circuit is mainly composed of two parts, the control board and the drive board, through the joint action of the two to realize the control of the transmission system. The control board part mainly uses 8501MCU to control the forward and reverse state change and speed adjustment of the motor, and realizes the change of the motor steering by controlling the conduction of different tubes. The adjustment of the motor speed adopts the PWM pulse method, and a three-stage speed change is designed. The circuit diagram of the control board is shown in Figure 3. The drive board part adopts H-bridge classic motor drive circuit, and the drive tube conducts diagonally when the motor moves.
3.3 Calculation and analysis process
According to the output power of back massage and waist massage and the efficiency of the transmission mechanism, calculate the minimum output power of the motor, select the appropriate motor based on the output power, and calculate the transmission ratio required to realize the back massage and waist massage according to the power and speed of the motor and the requirements of the output end. , and then design the transmission mechanism. Combined with the output torque at the output end, check the strength of each part of the massage chair. Estimate the weight of the human body as 150 kg, take the maximum pressure on the backrest as 100 kg, check the friction coefficient of the leather to calculate the back friction force, and combine the designed massage roller diameter to calculate the torque and back massage output power. Estimate the pressure generated by the waist massage tilting disk and waist extrusion, and then calculate the torque and waist massage output power according to the plastic friction coefficient. Check the transmission efficiency of the pulley block, bearing, gear train, deceleration mechanism, etc., and calculate the power provided by the main shaft to the waist massage and back massage respectively. From this power, the minimum output efficiency of the motor can be calculated through the transmission efficiency, and the appropriate motor can be selected by consulting the relevant motor information. . According to the power and speed of the motor and the output requirements, the gearbox and gear train transmission are designed. Combined with the output torque at the output end, calculate and check the stress of the selected steel cable, main drive shaft, transmission gears and chains at all levels, etc. The three-dimensional rendering of the product completed according to this design idea is shown in Figure 4.
summary
The innovations of this massage chair are as follows: (1) The massage part of the product uses a combination of fixed pulleys, movable pulleys, steel cables and limit switches to realize the massage wheel rolling up and down to avoid physical damage to the human body. (2) The main transmission shaft is innovatively designed, and the shape and position fit and clamping device are adopted at both ends (to realize the synchronous movement of the transmission sprocket), which can realize axial sliding (adjusting the distance between the two waist massage discs) and circumferential rotation respectively. (The movement is transmitted to the massage disc through the sprocket mechanism), and the movement distribution of the main drive shaft is used to realize the coordinated control of the movement of the back and waist. To expand the development of software modules and increase the learning function to realize and save the user's personalized automatic massage mode is the content of this project to be further studied in the future.
The above are the details of the multifunctional health care massage chair solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have the development and design needs of massage chairs, you can trust us. We have rich experience in custom development of electronic products. We can evaluate the development cycle and IC price as soon as possible, and can also calculate the PCBA quotation. We are a number of chip agents at home and abroad: Songhan, Yingguang, Jieli, Ankai, Quanzhi, realtek, with MCU, voice IC, Bluetooth IC and module, wifi module. Our development capabilities cover PCB design, single-chip microcomputer development, Bluetooth technology development, software customization development, APP customization development, WeChat official account development and other hardware and software design. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the development of electronic education products.
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