Electric heating warm-keeping socks capable of preventing low-temperature scalds

Abstract

The invention relates to the technical field of warm-keeping socks, in particular to an electric heating warm-keeping sock capable of preventing low-temperature scalding, which comprises a sock body, the sock body comprises a sock body, a sock bottom sewn at the bottom of the sock body and a sock leg sewn at the upper part of the sock body, and the top of the sock leg is provided with an anti-skid layer; the sock sole is provided with a heating part, a storage bag embedded in the sock leg is arranged on one side of the top of the sock leg, temperature detection devices are arranged on the side, relative to the heating part, of the sock sole and in the storage bag, and a control part connected with the temperature detection devices is further arranged in the storage bag. The control part controls the on-off state and the heating temperature of the heating part through detection of the temperature detection device. The invention provides an electric heating warm-keeping sock capable of preventing low-temperature scalds, which is used for meeting the heating requirement and avoiding low-temperature scalds when a user uses the sock in a complex environment.

Description

Technical Field

[0001] The invention relates to the technical field of thermal socks, and in particular to electrically heated thermal socks capable of preventing low-temperature burns. Background Art

[0002] With the development of electric heating technology, thermal clothing has developed more and more rapidly, especially heated socks, which are very popular among people. The working principle of common heated socks on the market is to drive the heating sheet to generate heat through lithium batteries, so that users can feel the warm effect. Unlike other heated clothing, the heating area of ​​heated socks is closer to human skin. At the same time, because the socks are worn on the feet and have a larger contact area with the feet, the heating wire is in closer contact with the human skin, especially in the heels and toes. Local high-pressure areas may be formed. This long-term local high pressure and close contact may cause heat concentration even at lower temperatures, thereby increasing the risk of low-temperature burns. At the same time, in order to solve the problem of foreign body sensation, socks cannot use thicker heating wires and larger temperature probes. Therefore, compared with other electrically heated clothing, heated socks often have the problem of low-temperature burns.

[0003] Common solutions for low-temperature burns on the market include the following:

[0004] 1. Reduce the heating temperature and lower the heating temperature of the heated socks to below 40°C (test temperature at room temperature 25°C), but this starting point runs counter to the needs of heated socks.

[0005] 2. Detect the temperature of other parts of the human body to adjust the heating temperature of the socks. For example, the utility model patent with the publication (announcement) number CN214962729U discloses an intelligent electric heating suit that prevents low-temperature burns. Compared with traditional electric heating suits, the intelligent electric heating suit introduces a temperature feedback adjustment process, making the heating process of the electric heating suit more intelligent, more accurate, and more comfortable. However, this patent has obvious limitations. Since the human body's thermal perception depends not only on the core body temperature, but also on the skin temperature and local blood circulation, the feet are the extremities of the human body, and the blood circulation is relatively poor. Especially in a cold environment, in order to maintain the temperature of the core parts, the body will automatically reduce the amount of blood flowing to the extremities, causing the temperature of the feet to drop, thereby producing a sense of cold. Therefore, even if the core temperature is normal, the low temperature of the feet will make people feel colder overall. Therefore, detecting the temperature of the core parts of the human body to control the heating area does not meet the needs of heating socks. At the same time, the place where low-temperature burns occur has little to do with the problem of the core area.

[0006] 3. Control the heating temperature and heating time through pressure detection. For example, the utility model patent with the publication (announcement) number CN205902104U discloses a carbon fiber heating device suitable for wearable clothing. The heating temperature is controlled by a time relay and a temperature controller, and low-temperature burns are prevented by a pressure sensor. This solution also has obvious limitations. When the heating socks are worn on the feet for a long time, the pressure is always there, and the heating cannot be stopped by pressure to solve the problem of low-temperature burns.

[0007] In summary, there is an urgent need for a device that can satisfy the user's needs for use in low-temperature environments, provide a sense of warmth, and achieve heating and warmth preservation, while also solving the problem of users avoiding low-temperature burns when using the device in other normal temperature environments or in different scenarios. Summary of the invention

[0008] In order to solve the above technical problems, an electric heating thermal socks with the function of preventing low-temperature burns is provided, which is used to solve the problem that when users use the socks in complex environments, they can meet the heating needs while avoiding low-temperature burns.

[0009] The present invention provides an electrically heated warm socks that can prevent low-temperature burns, and the technical solution is as follows:

[0010] The sock body comprises a sock body, a sock sole sewn to the bottom of the sock body, and a sock tube sewn to the upper part of the sock body, and a non-slip layer is provided on the top of the sock tube;

[0011] The sock sole is provided with a heating part, and a storage bag embedded in the sock sole is provided on one side of the top of the sock tube. A temperature detection device is provided on one side of the sock sole related to the heating part and inside the storage bag. A control part connected to the temperature detection device is also provided in the storage bag. The control part controls the switching state and heating temperature of the heating part through detection by the temperature detection device.

[0012] Preferably, the heating part is a heating sheet or a heating wire, and the heating part is sewn on the entire sole of the foot.

[0013] Preferably, the temperature detection device comprises a first temperature sensor and a second temperature sensor, the first temperature sensor is in close contact with the heating part and is used to detect the temperature of the heating part, and the second temperature sensor is placed on one side of the control part and is used to detect the ambient temperature.

[0014] Preferably: the control unit includes a control board with a built-in MCU, the control board is electrically connected to the heating unit, the first temperature sensor and the second temperature sensor, and the MCU detects the temperatures measured by the first temperature sensor and the second temperature sensor in real time, thereby adjusting the on / off and temperature control of the heating unit.

[0015] Preferably, the first temperature sensor and the second temperature sensor are NTC thermistors, which are negative temperature sensor resistors whose resistance value decreases as the temperature increases.

[0016] Preferably: a power supply module for power supply is provided in the storage bag, the control board is provided in the storage bag, and the second temperature sensor is placed at the upper end of the control board and located on the outside of the storage bag. In order to avoid contact between the control board and the second temperature sensor and to cause erroneous data with the human body, the upper end of the control board is suspended and away from the power supply module. The power supply module adopts a battery with a thickness of 17 mm, which can effectively avoid the influence of human body temperature on the second temperature sensor.

[0017] Technical effects and advantages of the present invention:

[0018] When the present invention is used, the user can feel warmth when using it in a low-temperature environment and achieve the effect of heating and keeping warm. It can also solve the problem of avoiding low-temperature burns when the user is in other normal temperature environments or in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an electrically heated warm socks with the function of preventing low-temperature burns provided in an embodiment of the present application;

[0020] Figure 2 is an enlarged schematic diagram of a heating portion and a first temperature sensor provided in an embodiment of the present application;

[0021] Figure 3 is a schematic diagram of the internal structure of the storage bag provided in an embodiment of the present application;

[0022] Figure 4 It is a principle framework diagram provided by the embodiment of the present application;

[0023] Figure 5 It is a logical schematic diagram of the heating temperature of the heating part in this application;

[0024] Figure 6 It is a logic diagram when the heating part is switched to the middle gear in this application;

[0025] Figure 7 It is a logic control flow chart of the control unit during low-temperature use provided by this embodiment.

[0026] In the figure:

[0027] 1. Sock body, 2. Sock sole, 3. Sock tube, 4. Anti-slip layer, 5. Heating part, 6. Storage bag, 7. First temperature sensor, 8. Second temperature sensor, 9. Control part, 10. Power supply module, 11. Closing part, 12. Elastic line. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0029] Example 1

[0030] See also Figure 1 to Figure 3 In this embodiment, an electrically heated thermal sock with the function of preventing low-temperature burns is provided, comprising a sock body, wherein the sock body comprises a sock body 1, a sock sole 2 sewn to the bottom of the sock body 1, and a sock tube 3 sewn to the upper part of the sock body 1, and an anti-slip layer 4 is provided on the top of the sock tube 3.

[0031] A heating part 5 is provided on the sock sole 2, and a storage bag 6 embedded in the sock tube 3 is provided on one side of the top of the sock tube 3. A temperature detection device is provided on one side of the sock sole 2 relative to the heating part 5 and inside the storage bag 6. A control part 9 connected to the temperature detection device is also provided in the storage bag 6. The control part 9 controls the switching state and heating temperature of the heating part 5 through detection by the temperature detection device.

[0032] According to ISO 13732-1:2006, the relationship between the temperature threshold and contact time of low-temperature burns is as follows:

[0033] 1) 60℃: Contact time is about 5-6 seconds, which will cause low-temperature burns.

[0034] 2) Contact time of 55℃ for about 10-15 seconds will cause low-temperature burns.

[0035] 3) 50℃: Contact time is about 3 minutes, which will cause low-temperature burns.

[0036] 4) 45℃: Contact time of about 30 minutes will cause low-temperature burns.

[0037] 5) 43℃: Contact time of about 8 hours will cause low-temperature burns.

[0038] These data are primarily based on the skin's reaction upon contact and are used to assess the risk of burns when the product is used in various environments, such as at home or in the workplace (ANS I Webstore).

[0039] The temperature test conditions of existing heating clothing on the market are all at an ambient temperature of 25°C, and the temperature of the heating clothing can reach 50°C or other corresponding temperatures such as 60°C. However, when actually used at different ambient temperatures, the temperature of the heating wire is different. For example, when used at 0°C, the temperature of the heating wire may be 40 degrees Celsius. Therefore, there is a need for a device that can provide sufficient heat at low temperatures and a heating temperature lower than the standard for human body burns at high temperatures.

[0040] The following is a supplementary explanation of the existing defects in the background technology:

[0041] Socks have various usage scenarios, including wearing electric heated socks to sleep, using them outdoors, indoors, by the fire, etc. Based on the above complex usage scenarios, heated socks may be used at low temperatures of -10℃ to 30℃, and low-temperature burns need to be avoided in these scenarios.

[0042] Method 1: Lower the heating temperature: In order to take into account the elasticity and comfort of the socks, it is impossible to use a larger and thicker heating wire to maintain a constant temperature of 40°C. Instead, a thinner and elastic composite heating wire is used to achieve heating. Therefore, it does not meet the usage requirements.

[0043] Method 2 controls the heating area by detecting the temperature of other parts of the human body: NTC is generally used to detect the temperature, and heating is stopped when it reaches 53°C. When the temperature is lower than the preset temperature, heating is turned on again. However, this solution has obvious limitations. It cannot solve the problem of low-temperature burns caused by high temperatures, such as long-term 53°C when wearing in bed, and it cannot solve the problem that users do not feel hot enough in low-temperature environments. In summary, the location of low-temperature burns when wearing socks has little to do with the temperature of the core area, which does not meet the requirements.

[0044] In method 3, the problem of low-temperature burns is solved by pressure detection. However, the socks are in contact with the skin for a long time and generate pressure. The problem of heating stopping cannot be solved by pressure, and the technical problem proposed by this application cannot be solved.

[0045] In view of the above problems, in Example 1 provided in the present application:

[0046] refer to Figure 2 As shown, the heating part 5 adopts a heating sheet or a heating wire, and the heating part 5 is sewn on the entire sole of the foot. The temperature detection device includes a first temperature sensor 7 and a second temperature sensor 8, the first temperature sensor 7 is in close contact with the heating part 5 and is used to detect the temperature of the heating part 5, and the second temperature sensor 8 is placed on the side of the control part 9 and is used to detect the ambient temperature.

[0047] like Figure 3As shown, the control unit 9 includes a control board with a built-in MCU, and the control board is electrically connected to the heating unit 5, the first temperature sensor 7 and the second temperature sensor 8. The MCU detects the temperature measured by the first temperature sensor 7 and the second temperature sensor 8 in real time, thereby adjusting the on-off and temperature control of the heating unit 5. Among them, the first temperature sensor 7 and the second temperature sensor 8 use NTC thermistors, which can be recorded as NTC1 and NTC2, which are negative temperature sensor resistors whose resistance value decreases as the temperature increases.

[0048] refer to Figure 4 As shown, a power supply module 10 for power supply is provided in the storage bag 6, the control board is provided in the storage bag 6, and the second temperature sensor 8 is placed at the upper end of the control board and located on the outside of the storage bag 6. In order to avoid contact between the control board and the second temperature sensor 8 with the human body and bring about erroneous data, the upper end of the control board is suspended and arranged away from the power supply module 10. The power supply module 10 adopts a battery with a thickness of 17 mm, which can well avoid the influence of human body temperature on the second temperature sensor 8.

[0049] In this embodiment, combined with Figure 4 As shown, the MCU includes a power control module, and the temperature control work is implemented through the power control module. When the preset temperature is reached, the temperature is controlled by controlling the on and off of the power control mode, that is, adjusting the duty cycle.

[0050] In a further embodiment:

[0051] The top of the storage bag 6 is provided with a closing portion 11, and an elastically tightenable closing rope is provided in the closing portion 11. The side end of the sock tube 3 is sewn with an elastic line 12 to improve the comfort and tightness of wearing.

[0052] Example 2

[0053] By detecting the temperature of the two NTC probes, a series of complex software control logic is used to implement a solution to avoid low-temperature burns. The above-mentioned duty cycle is used to control the temperature. By detecting the temperature of the first temperature sensor NTC1 and the second temperature sensor NTC2, the following logic control is implemented:

[0054] First, set the preset temperature to high 50°C and the first temperature sensor trigger threshold to 53°C;

[0055] The mid-range is 42°C, and the first temperature sensor trigger threshold is 45°C;

[0056] The low gear is 35℃, the trigger threshold of the first temperature sensor is 38℃, and the test condition is normal temperature 25℃.

[0057] After powering on, enter high gear:

[0058] refer to Figure 5 As shown, the ordinate represents the temperature detected by NTC1, and the abscissa represents the time.

[0059] T1 indicates the temperature monitored by NTC1 after power-on. NTC1 is placed on the heating wire and is considered to be the temperature of the heating wire. That is, T1 indicates the high-end working temperature of the heating wire after power-on.

[0060] The time from when the heating unit is powered on to the high temperature state is recorded as T1;

[0061] The duration of the heating part being in the high-end state is recorded as T2;

[0062] After the MCU detects that the high-temperature duration of high-speed reaches the threshold value (>T2), it switches to medium-speed. The temperature curve after natural cooling, the time from high-speed state to medium-speed state is recorded as T3;

[0063] The duration of the heating part being in the middle state is recorded as T4;

[0064] After the MCU detects that the duration of high temperature in the middle gear reaches the threshold (>T4), it switches to the low gear. The temperature curve after natural cooling, the time from the middle gear state to the low gear state is recorded as T5;

[0065] The duration of the heating part being in the low gear state is recorded as T6;

[0066] The heating part continues to heat up for a period of T1+T2+T3+T4+T5+T6<8H. When the duration is greater than 8H, the device will be shut down directly.

[0067] Furthermore, when the high-speed triggering threshold is not reached, T1+T2<15min, that is, the high-speed is forcibly switched to the medium-speed after 15 minutes.

[0068] When switching to mid-range immediately after power-on, refer to Figure 6 As shown:

[0069] T1 indicates the time of medium-range heating after the heating wire is powered on;

[0070] T2 indicates the duration of the heating wire in the middle gear;

[0071] T3 is the temperature curve after the MCU detects that the duration of medium-range high temperature reaches the threshold (>T2) and switches to medium range and cools naturally.

[0072] T4 indicates the low gear duration. When the duration is greater than 8 hours, the machine will be shut down directly.

[0073] In the above process, when the trigger threshold is not reached, T1+T2+T3+T4<8H.

[0074] Furthermore, when NTC2 detects that the temperature exceeds 45°C, it immediately switches to the low gear and continuously monitors the temperature of NTC1 to ensure that the temperature of NTC1 does not exceed the threshold of the low gear.

[0075] Furthermore, when the temperature of NTC2 continues to rise, the heating function will be turned off.

[0076] After adding the above protection logic, the user will not trigger the above logic during normal use, but due to the addition of more protection, the user will feel that it is not hot enough at low temperatures. Therefore, in order to meet the needs of users, additional compensation is required.

[0077] During low temperature use, the MCU needs to detect the temperature of NTC1 and NTC2 in real time. The specific logic reference Figure 7 As shown, the following steps are included:

[0078] When it is detected that the temperature of the first temperature sensor is continuously lower than 32°C, and the temperature of the second temperature sensor is detected to be lower than 10°C, the output power is increased to maintain the temperature of the first temperature sensor at 32°C;

[0079] When it is detected that the temperature of the first temperature sensor is continuously lower than 25°C, and the temperature of the second temperature sensor is detected to be lower than 5°C, the output power is increased to maintain the temperature of the first temperature sensor at 25°C;

[0080] When it is detected that the temperature of the first temperature sensor is continuously lower than 32°C, and when it is detected that the temperature of the second temperature sensor is not lower than 10°C, the output power is increased, the heating slope of the first temperature sensor is recorded, and corresponding temperature compensation is performed by judging the heating slope of the first temperature sensor.

[0081] In the logic described above, only the high-end logic is shown. The mid-range and low-range will appropriately adjust the judgment threshold and the intensity of compensation, but the logic is the same.

[0082] Based on the above software logic, adding a series of protection functions such as NTC open circuit, NTC short circuit, overcurrent, overvoltage, etc. can effectively avoid the occurrence of low-temperature burns.

[0083] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An electrically heated thermal sock with the function of preventing low-temperature burns, comprising a sock body, the sock body comprising a sock body, a sock sole sewn to the bottom of the sock body, and a sock tube sewn to the upper part of the sock body, the top of the sock tube is provided with an anti-slip layer, characterized in that The sock sole is provided with a heating part, and a storage bag embedded in the sock sole is provided on one side of the top of the sock tube. A temperature detection device is provided on one side of the sock sole related to the heating part and inside the storage bag. A control part connected to the temperature detection device is also provided in the storage bag. The control part controls the switching state and heating temperature of the heating part through the detection of the temperature detection device.

2. The electrically heated warm socks for preventing low-temperature burns according to claim 1, characterized in that: The temperature detection device includes a first temperature sensor and a second temperature sensor. The first temperature sensor is in close contact with the heating part and is used to detect the temperature of the heating part. The second temperature sensor is placed on one side of the control part and is used to detect the ambient temperature.

3. The electrically heated warm socks for preventing low-temperature burns according to claim 2, characterized in that: The control unit includes a control board with a built-in MCU, which is electrically connected to the heating unit, the first temperature sensor and the second temperature sensor. The MCU detects the temperatures measured by the first temperature sensor and the second temperature sensor in real time, thereby adjusting the on / off and temperature control of the heating unit.

4. The electrically heated warm socks for preventing low-temperature burns according to claim 3, characterized in that: A power supply module for power supply is arranged in the storage bag, the control board is arranged in the storage bag, the second temperature sensor is placed at the upper end of the control board and located outside the storage bag, and the upper end of the control board is suspended and arranged away from the power supply module to avoid the influence of human body temperature on the second temperature sensor.

5. The electrically heated warm socks for preventing low-temperature burns according to claim 4, characterized in that: The MCU includes a power control module, and the temperature control work is implemented through the power control module. When the preset temperature is reached, the temperature is controlled by controlling the on and off of the power control mode, that is, adjusting the duty cycle.

6. The electrically heated warm socks for preventing low-temperature burns according to claim 5, characterized in that: The first temperature sensor and the second temperature sensor are NTC thermistors, which are negative temperature sensor resistors whose resistance value decreases as the temperature increases.

7. The electrically heated warm socks for preventing low-temperature burns according to claim 6, characterized in that: The heating part adopts a heating sheet or a heating wire, and the heating part is sewn on the entire sole of the foot.

8. The electrically heated warm socks for preventing low-temperature burns according to claim 7, characterized in that: Set the preset temperature to high 50℃, the first temperature sensor trigger threshold is 53℃; medium 42℃, the first temperature sensor trigger threshold is 45℃; low 35℃, the first temperature sensor trigger threshold is 38℃, and the test condition is room temperature 25℃; By detecting the temperature of the first temperature sensor and the second temperature sensor, the following logic control is realized: After powering on, enter high gear: The time from when the heating unit is powered on to the high temperature state is recorded as T1; The duration of the heating part being in the high-end state is recorded as T2; After the MCU detects that the high-temperature duration of the high-speed reaches the threshold, it switches to the medium-speed state. The time from the high-speed state to the medium-speed state is recorded as T3; The duration of the heating part being in the middle state is recorded as T4; After the MCU detects that the duration of the medium-range high temperature reaches the threshold, it switches to the low-range state. The time from the medium-range state to the low-range state is recorded as T5; The duration of the heating part being in the low gear state is recorded as T6; The heating part continues to heat up for a period of T1+T2+T3+T4+T5+T6<8H. When the duration is greater than 8H, the device will be shut down directly.

9. The electrically heated warm socks for preventing low-temperature burns according to claim 8, characterized in that: When the high-speed triggering threshold is not reached and T1+T2<15min, the high-speed is forcibly switched to the medium-speed after 15min; When the second temperature sensor detects that the temperature exceeds 45°C, it immediately switches to low gear and continuously monitors the temperature of the first temperature sensor to ensure that the temperature of the first temperature sensor does not exceed the threshold of the low gear; when the temperature of the second temperature sensor continues to rise, the heating function is turned off.

10. The electrically heated warm socks for preventing low-temperature burns according to claim 9, characterized in that: MCU logic control is as follows: When it is detected that the temperature of the first temperature sensor is continuously lower than 32°C, and the temperature of the second temperature sensor is detected to be lower than 10°C, the output power is increased to maintain the temperature of the first temperature sensor at 32°C; When it is detected that the temperature of the first temperature sensor is continuously lower than 25°C, and the temperature of the second temperature sensor is detected to be lower than 5°C, the output power is increased to maintain the temperature of the first temperature sensor at 25°C; When it is detected that the temperature of the first temperature sensor is continuously lower than 32°C, and when it is detected that the temperature of the second temperature sensor is not lower than 10°C, the output power is increased, the heating slope of the first temperature sensor is recorded, and corresponding temperature compensation is performed by judging the heating slope of the first temperature sensor.

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