Air pressure relaxation equipment with direct current power supply mode and alternating current power supply mode

Abstract

The utility model discloses air pressure relaxation equipment with a direct-current power supply mode and an alternating-current power supply mode, which relates to the technical field of air pressure relaxation and comprises an alternating-current power supply circuit, a direct-current power supply circuit, an air pump driving circuit, a main control circuit and a linear voltage regulator U1. The alternating-current power supply circuit is used for connecting an external alternating-current power supply to provide stable power voltage and current for equipment, the direct-current power supply circuit is used for connecting an external direct-current power supply to output specified voltage to the equipment, and the main control circuit controls the air pump motor to work through the air pump driving circuit; the linear voltage regulator reduces the voltage input by the alternating current power supply circuit and the voltage input by the direct current power supply circuit to the working voltage suitable for the main control circuit, has an alternating current power supply mode and a direct current power supply mode, and can adopt stable and lasting alternating current power supply, such as an indoor socket, or adopts portable direct current power supply, such as a power bank, or a power supply module according to the use requirements. The main control circuit can control the air pump motor through the air pump driving circuit in various scenes, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of air pressure relaxation, in particular to air pressure relaxation equipment with both a direct current power supply mode and an alternating current power supply mode. Background Art

[0002] Air pressure massage technology is currently widely used in many fields, including health care and home use.

[0003] In the field of sports health, air pressure massage is widely used for recovery and muscle relaxation after exercise. For muscle fatigue and sports injuries, air pressure massage instruments can apply appropriate pressure through properly adjusted airbag inflation and deflation, which helps promote blood circulation and relieve pain. Air pressure massage technology can accelerate muscle recovery and reduce pain and swelling through precise massage intensity and time. For physical fatigue caused by long-term sports training or long-term sitting in the office, air pressure massage instruments can promote blood circulation, relieve muscle soreness and increase the body's recovery speed through comprehensive and delicate massage.

[0004] In addition, air pressure massage technology is gradually being used in homes. With its simple and easy-to-operate design, air pressure massage devices allow users to independently perform a full range of massages at home. Users can enjoy a full range of massages according to their personal needs and preferences, allowing users to relax their body and mind and relieve stress at home.

[0005] Traditional air pressure massage products can only be powered by power supply or battery, and a single product cannot meet the needs of users in multiple scenarios. These reasons make users face difficulties in carrying and storing, and there are certain limitations. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic relaxation device with both a DC power supply mode and an AC power supply mode, including an AC power supply circuit, a DC power supply circuit, an air pump drive circuit and a main control circuit. The AC power supply circuit is used to connect an external AC power supply to provide a stable power supply voltage and current for the pneumatic relaxation device, and the DC power supply circuit is used to connect an external DC power supply to output a specified voltage to the device. The main control circuit controls the operation of the air pump motor through the air pump drive circuit; it also includes a linear regulator U1, which reduces the voltage input to the AC power supply circuit and the voltage input to the DC power supply circuit to a working voltage suitable for the main control circuit.

[0008] As a further solution of the utility model: the AC power supply circuit includes a rectifier and filter circuit and a transformer and regulator circuit; the L line entrance of the rectifier and filter circuit is connected in series with a fuse F1, and the N line entrance is connected in series with a thermistor RT1; the rear ends of the fuse F1 and the thermistor RT1 are connected in parallel with a varistor RV1 and an X2 capacitor CX1, the X2 capacitor CX1 is connected with a common-mode filter capacitor and a resistor to form an RC filter network, the RC filter network is connected with a rectifier bridge BD1, and the output end of the rectifier bridge BD1 is connected with an electrolytic capacitor C3; the transformer and regulator circuit includes a transformer T1, a switching power supply control chip IC1 and its peripheral circuits, which are used to output a stable power supply voltage according to the DC voltage input by the rectifier and filter circuit, and to step down the power supply voltage through the transformer T1.

[0009] As a further solution of the utility model: the secondary coil of the transformer T1 is connected with a common-mode inductor LF2, and the front and rear ends of the common-mode inductor LF1 are respectively connected with an electrolytic capacitor C6 and an electrolytic capacitor C4.

[0010] As a further solution of the utility model: the input terminal Vin and the ground terminal GND of the linear regulator U1 are respectively connected to the positive electrode of the electrolytic capacitor C4 and the negative electrode of the electrolytic capacitor C4, and the output terminal Vout of the linear regulator U1 is connected in parallel with the ground point through the electrolytic capacitor EC1, the resistor R10, and the capacitor C5; the output terminal of the DC power supply circuit is connected to the input terminal Vin of the linear regulator U1.

[0011] As a further solution of the utility model: the DC power supply circuit includes a Type-c female socket and a PD protocol chip U8, and the CC1 pin and CC2 pin of the Type-c female socket are respectively connected to the signal end CC1 and the signal end CC2 of the PD protocol chip U8 and are respectively connected to the pull-down resistor R67 and the pull-down resistor R66.

[0012] Compared with the prior art, the beneficial effects of the present technical solution are as follows: it has an AC power supply mode and a DC power supply mode, and users can use stable and long-lasting AC power supply, such as an indoor socket, or use a convenient and portable DC power supply, such as a power bank, according to their usage needs, so that the main control circuit can control the air pump motor through the air pump drive circuit in a variety of scenarios, making it more convenient to use.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a circuit schematic diagram of the AC power supply circuit in the utility model;

[0016] Figure 2 It is the circuit schematic diagram of the linear voltage regulator U1 in the utility model;

[0017] Figure 3 It is a circuit schematic diagram of the DC power supply circuit in the utility model;

[0018] Figure 4 It is a circuit schematic diagram of the main control circuit in the utility model;

[0019] Figure 5 It is a circuit principle diagram of the air pump driving circuit in the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 , a pneumatic relaxation device with both DC power supply mode and AC power supply mode, including an AC power supply circuit, a DC power supply circuit, an air pump drive circuit and a main control circuit. The AC power supply circuit is used to connect an external AC power supply to provide a stable power supply voltage and current for the pneumatic relaxation device, the DC power supply circuit is used to connect an external DC power supply to output a specified voltage to the device, and the main control circuit controls the operation of the air pump motor through the air pump drive circuit; it also includes a linear regulator U1, which reduces the voltage input to the AC power supply circuit and the voltage input to the DC power supply circuit to a working voltage suitable for the main control circuit.

[0022] Main control circuit such as Figure 4As shown, the main control IC U3 controls other parts and communicates with other ICs by controlling or detecting pin level changes. The filter capacitors C15 and C16 are used to improve the filtering effect of the power line, reduce the ripple and noise of the power supply, and increase the stability and anti-interference ability of the power line, thereby ensuring the normal operation and stability of the single-chip computer system.

[0023] Air pump drive circuit Figure 5 As shown, the high level output from the MOTOR1 terminal of the main control IC U3 passes through the current limiting resistor R34, turning on the MOS tube Q1. At this time, the current can flow from the drain to the source and connect to the external air pump motor through the terminal J6, so that the air pump motor can work. The diode D6 between the drain and the positive pole of the power supply plays the role of reverse electromotive force protection, the capacitor C18 and the resistor R32 play the role of smoothing voltage fluctuations and filtering and denoising, and the resistors R37 and R38 from the source to the ground can limit the flow of current to prevent excessive current from damaging the MOS tube Q1 and other circuit components.

[0024] The AC power supply circuit consists of three parts, such as Figure 1 As shown:

[0025] The first part (i.e., the rectifier filter circuit) has a series fuse F1 at the L line entrance to provide overload protection and short circuit protection for the circuit, and a series thermistor RT1 at the N line entrance to provide overcurrent protection and overtemperature protection for the circuit. The rear end of the thermistor RT1 and the rear end of the fuse F1 are connected in parallel with a varistor RV1 and an X2 capacitor CX1, wherein the varistor RV1 can effectively absorb excessive voltage to prevent excessive voltage from damaging the subsequent circuit, and the X2 capacitor CX1 can filter out interference signals on the input power line to ensure the stability of the power supply. The X2 capacitor CX1 is connected with a filter capacitor and a resistor to form an RC filter network, which plays a role in suppressing common mode noise. Then the rectifier bridge BD1 is connected to convert the input AC power into DC power, and the electrolytic capacitor C3 is used to smooth the rectified DC voltage, reduce voltage ripple and noise, and provide a constant power supply voltage for the subsequent circuit.

[0026] The rear ends of the thermistor RT1 and the fuse F1 are relative to the N line inlet and the L line inlet, that is, the end of the thermistor RT1 connected to the N line inlet is the front end of the thermistor RT1, and the end of the fuse F1 connected to the L line inlet is the front end of the fuse F1.

[0027] The second part (i.e., the voltage conversion and regulation circuit) is responsible for stabilizing the output power supply voltage by the switching power supply circuit, and reducing the power supply voltage to a lower voltage suitable for subsequent circuits through transformer T1. The switching power supply circuit includes the switching power supply control chip IC1 and its peripheral circuits.

[0028] The third part uses two electrolytic capacitors C6 and C4 set at the front and rear ends of the common-mode inductor LF2. The front-end electrolytic capacitor C6 is used to smooth the DC signal output by the switching power supply and further reduce voltage ripple and noise. The common-mode inductor LF2 is used to remove the common-mode noise in the output of the switching power supply. The rear-end electrolytic capacitor C4 further smoothes the voltage signal and provides a stable power supply to the subsequent circuit.

[0029] The front and rear ends of the common mode inductor LF2 are relative to the secondary coil of the transformer T1, that is, the two pins connected to the secondary coil are the front end of the common mode inductor LF2, and the remaining two pins are the rear end of the common mode inductor LF2.

[0030] The input terminal Vin of the linear regulator U1 is connected to the positive electrode of the electrolytic capacitor C4 through a resistor R9. The input terminal Vin of the linear regulator U1 is also connected to the output terminal of the DC power supply circuit through the resistor R9. The linear regulator U1 reduces the voltage output by the third part or the voltage input by the DC power supply circuit to a voltage at which electronic components such as the main control IC U3 can work, and connects an electrolytic capacitor EC1 in parallel at the output terminal to smooth the voltage output by the linear regulator U1, and connects a resistor R10 and a capacitor C5 in parallel for discharging and filtering high-frequency noise.

[0031] DC power supply circuit such as Figure 3 As shown, when working, the Type-C female socket is connected to an external DC power supply (such as a power bank), and its CC1 pin and CC2 pin are respectively connected to the signal terminal CC1 and the signal terminal CC2 of the PD protocol chip U8 and are respectively connected to the pull-down resistors R67 and R66, which are used to realize handshake recognition and power negotiation, and help devices to perform normal power interconnection and power management.

[0032] The output voltage value is set by connecting the SEL end of the PD protocol chip U8 to the VBUS pin of the Type-C socket through the resistor R65. The PD protocol chip U8 controls the switch of the power path by controlling the switch of the NMOS tube Q3 to achieve the output of the set voltage value, and sends the high-level signal output after the voltage division of the resistors R62, R64, and R63 to the main control ICU3 through the terminal, thereby realizing the recognition of the DC power supply. At the same time, the output end is also connected to the input end Vin of the linear regulator U1, and the output specific voltage is used by the device, such as connecting the pin 3 of the connector J1 to the input end Vin of the linear regulator U1 through the resistor R9.

[0033] Diode D7 is used to prevent the voltage generated by the AC power supply circuit from affecting it.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A pneumatic relaxation device with both DC power supply mode and AC power supply mode, characterized in that: It includes an AC power supply circuit, a DC power supply circuit, an air pump drive circuit and a main control circuit. The AC power supply circuit is used to connect an external AC power supply to provide a stable power supply voltage and current for the air pressure relaxation device. The DC power supply circuit is used to connect an external DC power supply to output a specified voltage to the device. The main control circuit controls the operation of the air pump motor through the air pump drive circuit. It also includes a linear regulator U1, which reduces the voltage input to the AC power supply circuit and the voltage input to the DC power supply circuit to a working voltage suitable for the main control circuit.

2. The air pressure relaxation device with both DC power supply mode and AC power supply mode according to claim 1, characterized in that: The AC power supply circuit includes a rectifier and filter circuit and a transformer and regulator circuit; The L-line inlet of the rectifier filter circuit is connected in series with a fuse F1, and the N-line inlet is connected in series with a thermistor RT1; the rear ends of the fuse F1 and the thermistor RT1 are connected in parallel with a varistor RV1 and an X2 capacitor CX1, the X2 capacitor CX1 is connected with a common-mode filter capacitor and a resistor to form an RC filter network, the RC filter network is connected with a rectifier bridge BD1, and the output end of the rectifier bridge BD1 is connected with an electrolytic capacitor C3; The voltage conversion and regulation circuit includes a transformer T1, a switching power supply control chip IC1 and its peripheral circuits, and is used to output a stable power supply voltage according to the DC voltage input by the rectifier and filter circuit, and to step down the power supply voltage through the transformer T1.

3. The air pressure relaxation device with both DC power supply mode and AC power supply mode according to claim 2, characterized in that: The secondary coil of the transformer T1 is connected to a common-mode inductor LF2 , and the front and rear ends of the common-mode inductor LF1 are respectively connected to an electrolytic capacitor C6 and an electrolytic capacitor C4 .

4. The air pressure relaxation device with both DC power supply mode and AC power supply mode according to claim 3, characterized in that: The input terminal Vin and the ground terminal GND of the linear regulator U1 are connected to the positive electrode of the electrolytic capacitor C4 and the negative electrode of the electrolytic capacitor C4 respectively, and the output terminal Vout of the linear regulator U1 is connected in parallel with the ground point through the electrolytic capacitor EC1, the resistor R10 and the capacitor C5; The output end of the DC power supply circuit is connected to the input end Vin of the linear regulator U1.

5. The air pressure relaxation device with both DC power supply mode and AC power supply mode according to any one of claims 1 to 4, characterized in that: The DC power supply circuit includes a Type-c socket and a PD protocol chip U8. The CC1 pin and CC2 pin of the Type-c socket are respectively connected to the signal terminal CC1 and the signal terminal CC2 of the PD protocol chip U8 and are respectively connected to the pull-down resistor R67 and the pull-down resistor R66.

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