CN116725843B

CN116725843B - Muscle massage device

Info

Publication number: CN116725843B
Application number: CN202310694224.6A
Authority: CN
Inventors: 王念欧; 郦轲; 王东明; 陶云杰; 廖炜
Original assignee: Shenzhen Accompany Technology Co Ltd
Current assignee: Shenzhen Accompany Technology Co Ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-08-13
Anticipated expiration: 2043-06-12
Also published as: CN116725843A

Abstract

The embodiment of the disclosure provides muscle massage equipment, which comprises an equipment body, wherein a connector is arranged on the equipment body; an accessory head assembly for detachable connection with the connector, the accessory head assembly including a load; the main control module, the main power supply, the driving circuit and the temperature acquisition circuit are all arranged in the equipment body, the driving circuit is positioned in a loop of the main power supply for supplying power to a load connected with the connector, and the temperature acquisition circuit is used for acquiring the temperature of the load and sending a temperature signal to the main control module; one of the equipment body and the accessory head assembly is provided with a sensor, the other one of the equipment body and the accessory head assembly is provided with an induction piece which is arranged corresponding to the sensor, the sensor is used for detecting the induction piece and outputting a corresponding detection signal to the main control module according to whether the induction piece is detected, and the main control module controls the driving circuit to be in a connection or disconnection state according to the detection signal and the temperature signal.

Description

Muscle massage device

Technical Field

The disclosure relates to the technical field of household appliances, in particular to muscle massage equipment.

Background

Muscle massage devices, such as fascia guns, can relax the soft tissues of the body by high frequency impact, effectively relieving muscle fatigue, and increasing blood circulation. Fascia guns can often be fitted with different massage heads, such as those with a hot compress function, which provide better relief from muscle fatigue and can reduce recovery time.

The hot compress massage head can be connected with the host machine through the connector. In order to enable plug and play heating after the hot compress massage head is installed, the connector needs to be kept in an electrified state all the time after being started so as to quickly detect and heat the hot compress massage head. However, the connector belongs to an easily accessible part, and the connector is electrified continuously to generate the risk of electric leakage.

Disclosure of Invention

To solve the problems in the related art, the embodiments of the present disclosure provide a muscle massage device.

An aspect of an embodiment of the present disclosure provides a muscle massage device, including a device body, on which a connector is provided; an accessory head assembly for detachable connection with the connector, the accessory head assembly including a load; the main control module, the main power supply, the driving circuit and the temperature acquisition circuit are all arranged in the equipment body, the driving circuit is positioned in a loop of the main power supply for supplying power to a load connected with the connector, and the temperature acquisition circuit is used for acquiring the temperature of the load and sending a temperature signal to the main control module; one of the equipment body and the accessory head assembly is provided with a sensor, the other one of the equipment body and the accessory head assembly is provided with an induction piece which is arranged corresponding to the sensor, the sensor is used for detecting the induction piece and outputting a corresponding detection signal to the main control module according to whether the induction piece is detected, and the main control module controls the driving circuit to be in a connection or disconnection state according to the detection signal and the temperature signal.

According to an embodiment of the present disclosure, the sensor outputs a first detection signal when the sensing piece is detected, and outputs a second detection signal when the sensing piece is not detected.

According to the embodiment of the disclosure, the main control module controls the driving circuit to be in a conducting state under the condition that the first detection signal is received and the temperature signal indicates that the temperature of the load is lower than the temperature threshold value.

According to the embodiment of the disclosure, the main control module controls the driving circuit to be in an off state under the condition that the second detection signal is received or the temperature signal indicates that the temperature of the load is not lower than the temperature threshold value.

According to an embodiment of the disclosure, the connector includes a first pin and a second pin, the load is connected between the first pin and the second pin in a case that the sub-head assembly is connected to the connector, the driving circuit includes a first driving circuit connected between the positive output terminal of the main power supply and the first pin and a second driving circuit connected between the second pin and the ground. When at least one of the first drive circuit and the second drive circuit is disconnected, the drive circuit is in a disconnected state.

According to the embodiment of the disclosure, the main control module controls the second driving circuit to be in a conducting state under the condition of receiving the first detection signal.

According to the embodiment of the disclosure, the main control module controls the second driving circuit to be in an off state under the condition of receiving the second detection signal.

According to the embodiment of the disclosure, the main control module controls the first driving circuit to be in a conducting state under the condition that the temperature signal is received to indicate that the temperature of the load is lower than the temperature threshold value.

According to the embodiment of the disclosure, the main control module controls the first driving circuit to be in an off state under the condition that the temperature signal is received to indicate that the temperature of the load is not lower than the temperature threshold value.

According to an embodiment of the present disclosure, the first driving circuit includes a first switching element and a second switching element, and the second driving circuit includes a third switching element and a fourth switching element. The first switching element comprises a first connecting end, a second connecting end and a first control end, wherein the first connecting end is connected with a main power supply, and the second connecting end is connected with a first pin. The second switch element comprises a third connecting end, a fourth connecting end and a second control end, wherein the third connecting end is connected with the first control end, the fourth connecting end is grounded, and the second control end is connected with the main control module. The third switching element comprises a fifth connecting end, a sixth connecting end and a third control end, wherein the fifth connecting end is connected with the second pin, and the sixth connecting end is grounded. The fourth switching element comprises a seventh connecting end, an eighth connecting end and a fourth control end, wherein the seventh connecting end is connected with the third control end, the eighth connecting end is grounded, and the fourth control end is connected with the main control module.

According to an embodiment of the disclosure, the first switching element is a low-level conductive element, and the third switching element is a high-level conductive element. The second switching element is opened in response to a first opening signal output by the main control module, so that the control end of the first switching element receives the heating voltage, and the first switching element is opened, and then the first driving circuit is opened. The second switching element is conducted in response to a first conduction signal output by the main control module, so that the control end of the first switching element is grounded through the conducted second switching element, and the first switching element is conducted.

According to the embodiment of the disclosure, the fourth switching element is turned on in response to the second turn-off signal output by the main control module, so that the control end of the third switching element is grounded through the turned-on fourth switching element, and the third switching element is turned off, so that the heating loop is turned off. The fourth switching element is turned off in response to the second conduction signal output by the main control module, so that the control end of the third switching element receives the working voltage, and the third switching element is turned on.

According to the embodiment of the disclosure, the connector further comprises a third pin, the temperature acquisition circuit is connected between the main control module and the third pin, the accessory head assembly further comprises a temperature sensor, and the temperature sensor is connected between the second pin and the third pin under the condition that the accessory head assembly is connected to the connector, and the temperature acquisition circuit acquires the temperature of the load through the temperature sensor.

According to an embodiment of the present disclosure, the temperature acquisition circuit includes an asymmetric element for limiting the direction of current flow to prevent the main power supply from discharging through the connector to the temperature acquisition circuit.

According to the embodiment of the disclosure, the temperature acquisition circuit comprises a fifth switching element, the fifth switching element comprises a ninth connecting end, a tenth connecting end and a fifth control end, the ninth connecting end is connected with the third pin, the tenth connecting end and the fifth control end are connected with the main control module, and the main control module controls the fifth switching element to be in a conducting state after receiving the first detection signal.

According to embodiments of the present disclosure, the sensor is electrically isolated from the sensing element.

According to the embodiment of the disclosure, the sensor is a hall sensor, and the sensing element is a magnetic element.

According to an embodiment of the disclosure, the sensor is an optical sensor, and the sensing element is a light source or a light shielding element.

According to the embodiment of the disclosure, the sensor is a mechanical switch arranged on the auxiliary head assembly or the equipment body, the sensing piece is a shell of the equipment body or the auxiliary head assembly, and the shell of the equipment body or the auxiliary head assembly presses the mechanical switch to change the switch state in a state that the auxiliary head assembly is connected with the connector.

According to the technical scheme of the embodiment of the disclosure, the accessory head assembly is detected through the cooperation of the sensor and the sensing piece, rather than electric connection detection, the connector is not electrified or leakage current is in a safety range when the accessory head assembly is not connected, power can be supplied immediately after the accessory head assembly is connected, and electric shock risk is reduced under the condition of keeping a plug-and-play function.

Drawings

Other features, objects and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:

Fig. 1 schematically illustrates a structural diagram of a muscle massage device to which an embodiment of the present disclosure is applied;

fig. 2 schematically shows a circuit schematic of a device body of an embodiment of the present disclosure.

Reference numerals:

100: the apparatus body 230: temperature sensor

110: Connector 1: first pin

120: And the main control module 2: second pin

130: Main power supply 3: third pin

140: Drive circuit Q11: first switch element

141: First drive circuit Q12: second switching element

142: The second driving circuit Q13: third switching element

150: Temperature acquisition circuit Q14: fourth switching element

160: Sensor D3: diode

200: Accessory head assembly U8: hall sensor

210: Load C40: capacitance device

220: Sensing elements R90, R91: resistor

Detailed Description

Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so as to be more easily implemented by those skilled in the art. In addition, for the sake of clarity, portions irrelevant to description of the exemplary embodiments are omitted in the drawings.

In this disclosure, it should be understood that terms such as "comprises" or "comprising," etc., are intended to indicate the presence of features, numbers, steps, acts, components, portions, or combinations thereof disclosed in this specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, acts, components, portions, or combinations thereof are present or added.

In addition, it should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 schematically illustrates a structural diagram of a muscle massage device to which the embodiments of the present disclosure are applied.

As shown in fig. 1, the muscle massage device may include a device body 100 and an accessory head assembly 200. The sub-head assembly 200 is adapted to be removably connected with the connector 110. The accessory head assembly includes a load 210. The device body 100 is provided with a connector 110. The main control module 120, the main power supply 130, the driving circuit 140 and the temperature acquisition circuit 150 are arranged in the equipment body 100. The driving circuit 140 is located in a loop of the main power supply 130 supplying power to the load 210 connected to the connector 110, and the temperature acquisition circuit 150 is configured to acquire the temperature of the load 210 and send a temperature signal to the main control module 120.

According to embodiments of the present disclosure, the muscle massage device may be a fascia gun and the accessory head assembly 200 may be, for example, a hot compress head of the fascia gun. The load 210 may be a heat generating body, such as an alumina ceramic heat generating body, or the like.

According to an embodiment of the present disclosure, the main control module 120 may be implemented as a controller such as a single chip microcomputer, a digital signal processor (DSP, digital Signal Processing), a field programmable gate array (FPGA, field Programmable GATE ARRAY), or the like. The main power supply 130 may be implemented as a battery, for example.

According to an embodiment of the present disclosure, one of the apparatus body 100 and the sub head assembly 200 is provided with a sensor, and the other is provided with a sensing member disposed corresponding to the sensor. For example, as shown in fig. 1, the apparatus body 100 is provided with a sensor 160, and the sub-head assembly 200 is provided with a sensing piece 220. The sensor 160 is used for detecting the sensing element 220, outputting a corresponding detection signal to the main control module 120 according to whether the sensing element 220 is detected, and the main control module 120 controls the driving circuit 140 to be in a turned-on or turned-off state according to the detection signal and the temperature signal. When the accessory head assembly 200 is not connected, the control driving circuit 140 is in a disconnected state, so that the leakage current of the connector 110 to the human body is very small, and the damage to the human body is avoided. When it is determined that the sub-head assembly 200 is connected, the driving circuit 140 is turned on according to the temperature signal, so that the main power supply 130 supplies power to the load 210 of the sub-head assembly 200.

According to an embodiment of the present disclosure, the sensor 160 outputs a first detection signal when the sensing piece 220 is detected, and outputs a second detection signal different from the first detection signal when the sensing piece 220 is not detected. The main control module 120 controls the driving circuit 140 to be in a conductive state when receiving the first detection signal and the temperature signal indicates that the temperature of the load 210 is lower than the temperature threshold. The main control module 120 controls the driving circuit 140 to be in an off state when receiving the second detection signal or the temperature signal indicates that the temperature of the load 210 is not lower than the temperature threshold.

According to an embodiment of the present disclosure, the driving circuit 140 may have more than two switching elements. After the device is turned on, at least two switching elements may be in an off state. When the first detection signal is received, one part of the switching elements are turned on, and the other part of the switching elements are kept off. When the temperature signal is received to meet the preset condition, the other part of the switching elements can be turned on to enable the driving circuit 140 to be turned on, so that the main power supply 130 can supply power to the connected load 210.

According to the embodiment of the present disclosure, the sensor 160 may be provided on the housing inside, the housing surface, or the connector 110 of the apparatus body 100 as long as the function of detecting whether the sub head assembly is mounted on the connector 110 can be achieved by the sensing member 220.

In other embodiments, the sensor 160 may be disposed on the sub-head assembly 200, and the sensing member 220 may be disposed on the device body 100, and the sensor 160 may transmit a detection signal to the main control module 120 through the wireless communication module.

According to an embodiment of the present disclosure, sensor 160 is electrically isolated from sensing element 220. The sensor 160 and the sensing member 220 do not sense each other through electrical connection detection, so that the risk of leakage can be reduced.

According to an embodiment of the present disclosure, the sensor 160 may be a hall sensor U8, in which case the sensing member 220 may be a magnetic member, such as a magnet. In the absence of a magnetic element near the sensor 160, the sensor 160 generates a second detection signal. When the sensing member 220 approaches the sensor 160, the sensor 160 generates a first detection signal different from the second detection signal. In this manner, the main control module 120 can determine whether the sub-head assembly 200 is mounted on the connector 110 according to the detection signal generated by the sensor 160.

According to an embodiment of the present disclosure, the sensor 160 may be an optical sensor, such as an illuminance sensor or an optical camera, in which case the sensing member 220 may be a light source or a light shielding member. Without the accessory head assembly 200 installed, the optical sensor detects ambient light. In the case of the attachment head assembly 200, the sensing element 220 may be, for example, a portion of a housing that serves as a shade for ambient light such that the illuminance detected by the optical sensor is below a certain threshold, for example, 10 lux. Or the sensing element 220 may be a light source for generating illumination stronger than ambient light. In order to reduce the influence of the ambient light on the detection function of the optical sensor, only light of a specific wavelength band or a specific wavelength may be detected. For example, the optical sensor may be an infrared sensor and the sensing element 220 may be an infrared light emitter.

According to the embodiment of the present disclosure, the sensor 160 may be a mechanical switch, such as a mechanical key, provided to the sub-head assembly 200 or the apparatus body 100, in which case the sensing member 220 may be a housing of the apparatus body 100 or the sub-head assembly 200, and the housing of the apparatus body 100 or the sub-head assembly 200 presses the mechanical switch in a state where the sub-head assembly 200 is connected to the connector 110 to change the switching state.

According to an embodiment of the present disclosure, the connector 110 may include a first pin 1 and a second pin 2. With the sub-head assembly 200 connected to the connector 110, the load 210 is connected between the first pin 1 and the second pin 2.

According to an embodiment of the present disclosure, the driving circuit 140 may include a first driving circuit 141 and a second driving circuit 142, the first driving circuit 141 being connected between the positive output terminal of the main power supply 130 and the first pin 1, the second driving circuit 142 being connected between the second pin 2 and ground. When both the first and second driving circuits 141 and 142 are turned on, the driving circuit 140 is in an on state, and when at least one of the first and second driving circuits 141 and 142 is turned off, the driving circuit 140 is in an off state.

In the case that the sub-head assembly 200 is connected to the connector 110, the first driving circuit 141, the load 210 and the second driving circuit 142 are connected in series between the positive output terminal of the main power supply 130 and the ground, so that the driving circuit 140 including the first driving circuit 141 and the second driving circuit 142 is located in a circuit of the main power supply 130 for supplying power to the load 210 connected to the connector 110.

According to the embodiment of the disclosure, the main control module 120 may control the second driving circuit 142 to be in a conductive state when receiving the first detection signal. The main control module 120 may control the second driving circuit 142 to be in an off state when receiving the second detection signal. In this way, even if the user touches the first pin 1 and the second pin 2 by mistake without accessing the sub-head assembly 200, since at least the second driving circuit 142 is disconnected, a power supply loop cannot be formed, the leakage current is very small, and the safety risk of leakage is reduced. In fact, in the case where the apparatus is normal, the first driving circuit 141 is also in the off state at this time, and no leakage occurs.

According to the embodiment of the disclosure, the main control module 120 may control the first driving circuit 141 to be in a conductive state when receiving the temperature signal indicating that the temperature of the load is lower than the temperature threshold. The main control module 120 has the function of controlling the first driving circuit 141 to be in an off state when the temperature signal is received to indicate that the temperature of the load is not lower than the temperature threshold. In this way, the muscle massage device can turn on the first driving circuit 141 to heat the load 210 when the temperature of the load does not reach the temperature threshold, and turn off the first driving circuit 141 to stop heating after the temperature reaches the temperature threshold, thereby realizing temperature control.

According to an embodiment of the present disclosure, the connector 110 may further include a third pin 3, and the temperature acquisition circuit 150 is connected between the main control module 120 and the third pin 3. The sub-head assembly 200 may also include a temperature sensor 230. With the sub-head assembly 200 connected to the connector 110, the temperature sensor 230 is connected between the second pin 2 and the third pin 3, and the temperature acquisition circuit 150 acquires the temperature of the load 210 through the temperature sensor 230.

Fig. 2 schematically shows a circuit schematic of the apparatus body 100 of the embodiment of the present disclosure.

As shown in fig. 2, the first driving circuit 141 may include a first switching element Q11 and a second switching element Q12, and the second driving circuit 142 may include a third switching element Q13 and a fourth switching element Q14.

According to an embodiment of the present disclosure, the first switching element Q11 may include a first connection terminal connected to the main power source 130, a second connection terminal connected to the first pin 1, and a first control terminal. The second switching element Q12 may include a third connection terminal, a fourth connection terminal, and a second control terminal, where the third connection terminal is connected to the first control terminal, the fourth connection terminal is grounded, and the second control terminal is connected to the main control module 120.

According to an embodiment of the present disclosure, the second switching element Q12 is turned off in response to the first off signal output from the main control module 120, such that the control terminal of the first switching element Q11 receives the heating voltage VBAT (i.e., the voltage generated by the main power supply 130), thereby turning off the first switching element Q11, and thus turning off the first driving circuit 141. The second switching element Q12 is turned on in response to the first turn-on signal output from the main control module 120, so that the control terminal of the first switching element Q11 is grounded through the turned-on second switching element Q12, thereby turning on the first switching element Q11.

The first switching element Q11 may be a low-level conductive switching tube, the second switching element Q12 may be a high-level conductive switching tube, the first off signal may be a low-level signal, and the first on signal may be a high-level signal.

According to an embodiment of the present disclosure, the third switching element Q13 may include a fifth connection terminal, which is connected to the second pin 2, a sixth connection terminal, which is grounded, and a third control terminal. The fourth switching element Q14 may include a seventh connection terminal, an eighth connection terminal, and a fourth control terminal, the seventh connection terminal being connected to the third control terminal, the eighth connection terminal being grounded, the fourth control terminal being connected to the main control module 120.

According to the embodiment of the disclosure, the fourth switching element Q14 is turned on in response to the second turn-off signal output by the main control module 120, so that the control end of the third switching element Q13 is grounded through the turned-on fourth switching element Q14, thereby turning off the third switching element Q13 and further turning off the heating loop. The fourth switching element Q14 is turned off in response to the second on signal output by the main control module 120, so that the control terminal of the third switching element Q13 receives the operating voltage VDD, thereby making the third switching element Q13 turned on.

According to the embodiment of the disclosure, the third switching element Q13 may be a high-level conductive switching tube, the fourth switching element Q14 may be a high-level conductive switching tube, the second off signal may be a high-level signal, and the second on signal may be a low-level signal.

According to an embodiment of the present disclosure, the first and third switching elements Q11 and Q13 may include a field-effect transistor (MOS), and the second and fourth switching elements Q12 and Q14 may include a transistor. The connection ends of the first switching element Q11 and the third switching element Q13 may be the source electrode or the drain electrode of the MOS transistor, and the control ends may be the gate electrode of the MOS transistor. The connection terminals of the second switching element Q12 and the fourth switching element Q14 may be collector electrodes or emitter electrodes of the transistors, and the control terminals may be base electrodes of the transistors. The first switching element Q11 and the third switching element Q13 function to turn on or off the heating circuit. The second switching element Q12 and the fourth switching element Q14 are used for amplifying signals and improving driving capability of the main control module 120.

According to the embodiment of the disclosure, the voltage value of the operating voltage VDD received by the third control terminal of the third switching element Q13 is lower than the voltage value of the heating voltage VBAT provided by the main power supply 130, for example, vbat=12v, vdd=5v. Of course, in other embodiments, the voltage value of the operating voltage VDD and the voltage value of the heating voltage VBAT may be equal.

According to an embodiment of the present disclosure, the sensor 160 may be implemented as a sensor circuit including a hall sensor U8, which may transmit the first detection signal or the second detection signal to the main control module 120 according to the sensing of the sensing member 220 by the hall sensor U8. The sensor circuit may employ various known techniques, and may be implemented, for example, as the sensor circuit shown in fig. 2.

According to the embodiment of the disclosure, when the main control module 120 receives the second detection signal, a first disconnection signal is output to the second switching element, the second switching element Q12 is turned off, and the first switching element Q11 is turned off; the second off signal is output to the fourth switching element, the fourth switching element Q14 is turned on, and the third switching element Q13 is turned off. This state is also an initialized state, and both the first switching element Q11 and the third switching element Q13 are off-state.

According to the embodiment of the disclosure, after the main control module 120 receives the first detection signal, the second switch element is output to the fourth switch element, the fourth switch element Q14 is turned off, the third switch element Q13 is turned on, the temperature acquisition circuit 150 starts to detect the temperature and feeds back the temperature to the main control module 120, if the temperature is lower than the set temperature, the main control module 120 outputs the first switch element to the second switch element, the second switch element Q12 is turned on, the first switch element Q11 is turned on, the main power supply 130 supplies power to the load 210, and the load 210 starts to heat until the set temperature is reached. Then, the main control module 120 outputs a first turn-off signal to the second switching element Q12, the second switching element Q12 is turned off, the first switching element Q11 is turned off, and the load stops heating.

In other embodiments, the first driving circuit 141 may include only the first switching element Q11, and the second driving circuit 142 may include only the third switching element Q13.

For example, the first connection end of the first switching element Q11 is configured to receive the heating voltage VBAT, the second connection end of the first switching element Q11 is connected to the first pin 1, the first control end of the first switching element Q11 is directly connected to the main control module 120, and the first switching element Q11 is configured to receive a first disconnection signal output by the main control module 120 through the first control end and disconnect the first driving circuit 141.

The fifth connection end of the third switching element Q13 may be grounded, the sixth connection end of the third switching element Q13 is connected to the second pin 2, the third control end of the third switching element Q13 is directly connected to the main control module 120, and the third switching element Q13 is configured to receive the second disconnection signal output by the main control module 120 through the third control end and disconnect the second driving circuit 142.

The first switching element Q11 is further configured to be turned on by receiving a first turn-on signal output from the main control module 120 through the first control terminal, and the third switching element Q13 is further configured to be turned on by receiving a second turn-on signal output from the main control module 120 through the control terminal, so as to turn on the driving circuit 140. At this time, the first switching element Q11 may be a low-level on switching element, the first off signal is a high-level signal, and the first on signal is a low-level signal. The third switching element Q13 may be a switching element that is turned on at a high level, the second off signal is a low level signal, and the second on signal is a high level signal.

According to an embodiment of the present disclosure, the temperature acquisition circuit 150 includes a resistor R90 connected in series between the operating voltage terminal and the third pin 3. The temperature sensor 230 in the sub-head assembly 200 may be a thermistor that is positioned proximate to the load 210. The second driving circuit 142 has a ground terminal. The temperature detection circuit is composed of an operating voltage end, a resistor R90, a third pin 3, a temperature sensor 230, a second pin 2 and a second driving circuit 142. The connection point between the resistor R90 and the third pin 3 is connected with the main control module 120, and is used for outputting a temperature acquisition signal to the main control module 120. The thermistor can adopt a thermistor with a negative temperature coefficient, the temperature acquisition signal is a voltage signal, and the signal value is the voltage value of the connecting point. The higher the temperature of the load 210 is, the lower the resistance value of the thermistor is, and a one-to-one correspondence exists between the temperature value of the load 210 and the voltage value of the connection point, so that the main control module 120 can determine the temperature of the load 210 according to the voltage value of the connection point, that is, the signal value of the temperature acquisition signal.

According to an embodiment of the present disclosure, the temperature acquisition circuit 150 may further include a resistor R91 and a capacitor C40, wherein a first end of the resistor R91 is connected to the connection point, and a second end of the resistor R91 is connected to the main control module 120. The capacitor C40 is connected between the second terminal of the resistor R91 and ground. The resistor R91 and the capacitor C40 form a low-pass filter circuit, which is used for filtering the temperature acquisition signal output by the connection point, and outputting the filtered temperature acquisition signal to the main control module 120, so that the interference of higher harmonics can be filtered, and the accuracy of temperature acquisition is improved.

In some abnormal situations of the device, the first driving circuit 141 may be unexpectedly turned on when the sub-head assembly 200 is not connected, at which time, since the second driving circuit 142 is in an off state, no leakage current may occur between the first pin 1 and the second pin 2, but a leakage current may occur between the first pin 1 and the third pin 3.

According to an embodiment of the present disclosure, the temperature acquisition circuit 150 may include an asymmetric element, such as a diode D3, for limiting the direction of current flow to prevent the main power supply 130 (VBAT) from discharging through the connector 110 to the temperature acquisition circuit 150. Due to the asymmetric components, in the abnormal state, the temperature acquisition circuit 150 presents extremely high resistance to the main power supply 130, so that larger leakage current can not be generated between the first pin 1 and the third pin 3, and the safety of human bodies is ensured.

Or the temperature acquisition circuit 150 may include a fifth switching element, where the fifth switching element includes a ninth connection end, a tenth connection end, and a fifth control end, the ninth connection end is connected to the third pin 3, the tenth connection end and the fifth control end are connected to the main control module 120, and the main control module 120 controls the fifth switching element to be in a conductive state after receiving the first detection signal. In this way, the temperature acquisition circuit 150 is also in an off state without the accessory head assembly 200 being connected, so that no discharge occurs between the first pin 1 and the third pin 3.

The embodiment of the disclosure provides muscle massage equipment, when the user can contact the connector, the connector is uncharged or leakage current is in the safe range, does not detect whether to insert the hot compress massage head through the electrical connection of connector, but detects whether to insert the hot compress massage head through the mode of isolating the detection, avoids the leakage current of connector too big to produce the electric shock risk.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the invention referred to in this disclosure is not limited to the specific combination of features described above, but encompasses other embodiments in which any combination of features described above or their equivalents is contemplated without departing from the inventive concepts described. Such as those described above, are mutually substituted with the technical features having similar functions disclosed in the present disclosure (but not limited thereto).

Claims

1. A muscle massage device, comprising:

the device comprises a device body, wherein a connector is arranged on the device body;

An accessory head assembly for detachable connection with the connector, the accessory head assembly including a load; and

The device comprises a main control module, a main power supply, a driving circuit and a temperature acquisition circuit, wherein the main control module, the main power supply, the driving circuit and the temperature acquisition circuit are all arranged in the device body, the driving circuit is positioned in a loop of the main power supply for supplying power to a load connected with a connector, and the temperature acquisition circuit is used for acquiring the temperature of the load and sending a temperature signal to the main control module;

One of the equipment body and the accessory head assembly is provided with a sensor, the other one of the equipment body and the accessory head assembly is provided with an induction piece which is arranged corresponding to the sensor, the sensor is used for detecting the induction piece and outputting a corresponding detection signal to the main control module according to whether the induction piece is detected or not, the main control module controls the driving circuit to be in a connection or disconnection state according to the detection signal and the temperature signal, and the sensor is electrically insulated from the induction piece;

The sensor outputs a first detection signal when the sensing member is detected, and outputs a second detection signal when the sensing member is not detected,

The main control module controls the driving circuit to be in a conducting state under the condition that the first detection signal is received and the temperature signal indicates that the temperature of the load is lower than a temperature threshold value;

The main control module controls the driving circuit to be in a disconnection state under the condition that the second detection signal is received or the temperature signal indicates that the temperature of the load is not lower than the temperature threshold value;

the connector includes a first pin and a second pin, the load is connected between the first pin and the second pin with the accessory head assembly connected to the connector,

The driving circuit comprises a first driving circuit and a second driving circuit, the first driving circuit is connected between the positive output end of the main power supply and the first pin, and the second driving circuit is connected between the second pin and the ground;

Wherein when the first driving circuit and the second driving circuit are both on, the driving circuit is in an on state, and when at least one of the first driving circuit and the second driving circuit is off, the driving circuit is in an off state.

2. The device of claim 1, wherein the master control module is configured to perform one or more of:

the main control module controls the second driving circuit to be in a conducting state under the condition of receiving the first detection signal;

the main control module controls the second driving circuit to be in a disconnection state under the condition of receiving the second detection signal;

The main control module controls the first driving circuit to be in a conducting state under the condition that the temperature signal is received to indicate that the temperature of the load is lower than the temperature threshold value;

and the main control module controls the first driving circuit to be in a disconnection state under the condition that the temperature signal is received to indicate that the temperature of the load is not lower than the temperature threshold value.

3. The apparatus of claim 1, wherein the first drive circuit comprises a first switching element and a second switching element, the second drive circuit comprises a third switching element and a fourth switching element,

The first switch element comprises a first connecting end, a second connecting end and a first control end, wherein the first connecting end is connected with the main power supply, and the second connecting end is connected with the first pin;

the second switch element comprises a third connecting end, a fourth connecting end and a second control end, the third connecting end is connected with the first control end, the fourth connecting end is grounded, and the second control end is connected with the main control module;

the third switching element comprises a fifth connecting end, a sixth connecting end and a third control end, the fifth connecting end is connected with the second pin, and the sixth connecting end is grounded;

The fourth switching element comprises a seventh connecting end, an eighth connecting end and a fourth control end, the seventh connecting end is connected with the third control end, the eighth connecting end is grounded, and the fourth control end is connected with the main control module;

The first switching element is a low-level conducting element, and the third switching element is a high-level conducting element; the second switching element is opened in response to a first opening signal output by the main control module, so that the control end of the first switching element receives a heating voltage, and the first switching element is opened, and the first driving circuit is opened; the second switching element is conducted in response to a first conduction signal output by the main control module, so that the control end of the first switching element is grounded through the conducted second switching element, and the first switching element is conducted;

The fourth switching element is turned on in response to a second disconnection signal output by the main control module, so that the control end of the third switching element is grounded through the turned-on fourth switching element, and the third switching element is disconnected, so that a loop for supplying power to a load connected to the connector is disconnected; the fourth switching element is turned off in response to a second conduction signal output by the main control module, so that the control end of the third switching element receives the working voltage, and the third switching element is turned on.

4. The apparatus of claim 1, wherein the connector further comprises a third pin, the temperature acquisition circuit is connected between the master control module and the third pin, the accessory head assembly further comprises a temperature sensor connected between the second pin and the third pin with the accessory head assembly connected to the connector, and the temperature acquisition circuit acquires the temperature of the load through the temperature sensor.

5. The apparatus of claim 1, wherein the temperature acquisition circuit includes an asymmetric element for limiting a direction of current flow to prevent the main power supply from discharging through the connector to the temperature acquisition circuit.

6. The apparatus of claim 4, wherein the temperature acquisition circuit comprises a fifth switching element, the fifth switching element comprises a ninth connection end, a tenth connection end and a fifth control end, the ninth connection end is connected with the third pin, the tenth connection end and the fifth control end are connected with the main control module, and the main control module controls the fifth switching element to be in a conducting state after receiving the first detection signal.

7. The apparatus of any one of claims 1-6, wherein the combination of the sensor and sensing member is at least one of:

the sensor is a Hall sensor, and the sensing piece is a magnetic piece;

The sensor is an optical sensor, and the sensing piece is a light source or a shading piece;

The sensor is a mechanical switch arranged on the auxiliary head assembly or the equipment body, the sensing piece is the equipment body or a shell of the auxiliary head assembly, and the equipment body or the shell of the auxiliary head assembly extrudes the mechanical switch to change the switch state in the state that the auxiliary head assembly is connected with the connector.