Automobile hidden door handle structure with deicing and cooling functions

Abstract

The invention discloses an automobile hidden door handle structure with deicing and cooling functions. The automobile hidden door handle structure comprises an NFC chip, an NFC key, a material level sensor, a temperature sensor, a door handle, a sealing frame, a door handle opening and closing control mechanism and an executing mechanism. The executing mechanism comprises a fan, a vortex tube and a two-position four-way electromagnetic reversing valve. And an air flow channel is arranged in the sealing frame. The using method comprises the steps of temperature threshold value presetting, NFC induction starting, temperature detection and control over opening or closing of the door handle according to the temperature, and the function of fault alarm is achieved. When the door handle is deiced, hot air is introduced through the reversing valve for heating; when the door handle is cooled, cold air is introduced through the reversing valve for cooling. The using method comprises the steps that a temperature threshold value is preset in the vehicle-mounted central controller, the NFC key starts the vehicle-mounted central controller, and opening and closing of the door handle are controlled according to the detection result of the temperature sensor. The door handle is simple in structure, safe, reliable, convenient to operate, not limited to special environments, high in intelligence and good in user experience.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hidden door handles of automobiles based on NFC technology, and particularly relates to a hidden door handle structure of an automobile with ice removing and temperature reducing functions. BACKGROUND

[0002] With the continuous improvement of automobile manufacturing technology, hidden door handles gradually appear on new energy vehicles and traditional fuel vehicles as a design trend. This design makes the appearance of the automobile more concise and beautiful, and at the same time, reduces the wind resistance during driving, thereby saving energy. However, with the popularity of hidden door handles, some technical problems have gradually emerged.

[0003] Firstly, the icing problem in winter has become a prominent challenge for hidden door handle technology. In cold weather conditions, the door handle is easily affected by icing, which leads to failure to normally pop out. This situation brings inconvenience to users, and even may delay the escape time in emergency situations, increasing the potential safety risk. The work of the reset spring is affected by icing, which makes the door handle unable to return to the normal operating state, further exacerbating the user's experience problem.

[0004] Secondly, in summer high-temperature weather, the hidden door handle may face the problem of overheating. The hidden door handle exposed to sunlight for a long time may cause discomfort or even burns to users. Moreover, overheating may also cause damage to the internal components of the hidden door handle, affecting its normal use.

[0005] At present, the common solution is mainly to use heating wires to warm up to defrost the hidden door handle. However, this method is limited to the use when the vehicle needs to enter in the stopped state, and lacks flexible control logic, which cannot fully meet the needs in special environments or states. There is also no appropriate solution to the problem of cooling the door handle in the existing technology. Therefore, more innovative designs and intelligent control logic are needed to ensure that the vehicle door handle can operate stably and reliably under various climate conditions, improve the user's experience and safety.

[0006] In addition, through the intelligent control system, the working mode of the door handle can be dynamically adjusted according to environmental temperature and vehicle state, etc., to improve its adaptability and flexibility. In summary, the solution to the technical problem of hidden door handle needs to consider factors such as design, heating system, refrigeration system and control logic. Through innovative research and engineering practice, the performance of the hidden door handle can be continuously improved, and its reliability and stability in various climate conditions can be improved, thereby further improving the safety, comfort and user experience of the automobile. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a hidden door handle structure for a vehicle with ice removal and cooling functions, which is simple in structure, safe and reliable, easy to operate, not limited to special environments, intelligent, and high in user experience.

[0008] To achieve the above-mentioned purposes, the technical solutions of the present application are as follows:

[0009] The hidden door handle structure for a vehicle with ice removal and cooling functions comprises an NFC chip, an NFC key matched with the NFC chip for induction, a level sensor for sensing the opening and closing of the door handle, a temperature sensor, a door handle, a sealing frame embedded with the door handle on the vehicle door, a control mechanism for controlling the opening and closing of the door handle, and an execution mechanism for cooling or removing ice from the door handle. The execution mechanism comprises a fan, a vortex tube, a two-position four-way electromagnetic reversing valve, and a plurality of connecting pipelines. The sealing frame is a ring frame structure, and a through hole for accommodating the door handle is arranged in the middle of the sealing frame. The air flow channel has an air inlet and an air outlet. The vortex tube comprises an air inlet pipe, a hot air outlet pipe, and a cold air outlet pipe. The air outlet of the fan is in communication with the air inlet pipe of the vortex tube. The two-position four-way electromagnetic reversing valve comprises two air inlets and two air outlets. The hot air outlet pipe and the cold air outlet pipe are in communication with the two air inlets of the two-position four-way electromagnetic reversing valve, respectively. One of the air outlets of the two-position four-way electromagnetic reversing valve is in communication with the air inlet of the air flow channel, and the other air outlet is in communication with the outside space of the vehicle body through a pipeline. The air inlet of the fan is in communication with the inside space of the vehicle body through a pipeline. The air outlet of the air flow channel is in communication with the inside space of the vehicle body through a pipeline. The NFC chip is electrically connected with the vehicle-mounted central controller. The level sensor is electrically connected with the vehicle-mounted central controller. The fan is electrically connected with the vehicle-mounted central controller. The temperature sensor is arranged on the door handle and is electrically connected with the vehicle-mounted central controller. The two-position four-way electromagnetic reversing valve is controlled by the vehicle-mounted central controller. When the door handle is removed from ice, the hot air outlet pipe of the vortex tube is in conduction with the air inlet of the sealing frame through the two-position four-way electromagnetic reversing valve. When the door handle is cooled, the cold air outlet pipe of the vortex tube is in conduction with the air inlet of the sealing frame through the two-position four-way electromagnetic reversing valve.

[0010] Preferably, the control mechanism comprises a bracket arranged in the door, a frame fixed on the bracket, a motor arranged in the frame, an output gear, a transmission gear matched with the output gear, a transmission shaft, a threaded screw rod, a threaded sleeve, an adjusting plate, a connecting arm and a fixed support; the output gear is arranged on the motor output shaft, the free end of the motor output shaft is movably arranged on the frame; the threaded screw rod is integrally arranged with the transmission shaft and arranged at one end of the transmission shaft, the other end of the transmission shaft is movably connected to the frame, the threaded screw rod is connected to one end of the threaded sleeve passing through the frame through thread cooperation, and the other end of the threaded sleeve is provided with a bearing frame; one side of the adjusting plate is hinged to the bearing frame, the other side of the adjusting plate is fixedly connected to one end of the connecting arm, and the other end of the connecting arm is fixedly connected to the inner side of the door handle; the fixed support is fixedly arranged on the door and located at the inner side end of the door handle, and the fixed support is connected to the adjusting plate through a movable frame bearing; the motor drives the output gear to rotate, the output gear drives the transmission gear to rotate, the transmission gear drives the transmission shaft to rotate, the threaded screw rod rotates with the transmission shaft, the threaded sleeve moves axially relative to the threaded screw rod, the threaded sleeve drives the adjusting plate to rotate relative to the fixed support, and the connecting arm and the door handle rotate with the adjusting plate.

[0011] Further, the air inlet and the air outlet on the air flow channel are symmetrically arranged on both sides of the air flow channel.

[0012] Further, the fan and the vortex tube are arranged in the hollow interlayer of the door.

[0013] Further, the NFC chip is arranged on the door handle or the B column of the automobile.

[0014] Further, the two-position four-way electromagnetic reversing valve is connected with the air outlet of the outer space of the vehicle body and the air outlet of the automobile air conditioner through a pipeline.

[0015] The application also relates to a use method of the above-mentioned automobile hidden door handle structure with the deicing and cooling functions, comprising the following steps:

[0016] S1, setting high-temperature threshold and low-temperature threshold for starting the fan in the vehicle-mounted central controller in advance;

[0017] S2, the NFC key is close to the NFC chip for induction, the vehicle is powered on, and the vehicle-mounted central controller is started;

[0018] S3, if the temperature is not detected through the temperature sensor in the vehicle-mounted central controller, the door handle is opened by starting the door handle through the vehicle-mounted central controller;

[0019] S4, if the temperature sensor does not detect the temperature in the vehicle control center, the temperature sensor detects the temperature around the door handle; when the detected temperature is lower than the high temperature threshold value minimum, the vehicle control center controls the control mechanism to open the door handle, and the door handle is opened; when the detected temperature is higher than the high temperature threshold value minimum, the vehicle control center starts the fan, and the vehicle control center controls the two-position four-way electromagnetic reversing valve to make the cold air outlet pipe of the vortex tube and the air inlet of the air flow channel conductive, and the vortex tube introduces cold air into the air flow channel to cool the door handle, and the gas introduced into the air flow channel is discharged into the vehicle body through the air outlet of the air flow channel; when the temperature sensor detects that the temperature around the door handle is lower than the high temperature threshold value minimum, the vehicle control center stops the fan and the vortex tube stops refrigeration, and then the vehicle control center controls the control mechanism to open the door handle, and the door handle is opened;

[0020] S5, when the door handle is not opened in either step S3 or step S4, the vehicle control center detects the temperature around the door handle through the temperature sensor; when the detected temperature is between the high temperature threshold value minimum and the low temperature threshold value maximum, if the door handle is not opened, a fault alarm is sent; when the detected temperature is lower than the low temperature threshold value maximum, the vehicle control center starts the fan, and the vehicle control center controls the two-position four-way electromagnetic reversing valve to make the hot air outlet pipe of the vortex tube and the air inlet of the air flow channel conductive, and the vortex tube introduces hot air into the air flow channel to heat and deice the door handle, and the gas introduced into the air flow channel is discharged into the vehicle body through the air outlet of the air flow channel, the vehicle control center opens the door handle at intervals, and when the level sensor detects that the door handle is opened, the vehicle control center stops the fan and the vortex tube stops heating.

[0021] Preferably, the minimum value of the high temperature threshold value is 30℃.

[0022] Preferably, the maximum value of the low temperature threshold value is 0℃.

[0023] Preferably, in step S5, the interval time is 5-10s.

[0024] The present application aims at the deficiencies existing in the prior art, and provides a hidden automobile door handle structure with ice removal and cooling functions. The structure is simple, safe and reliable, convenient to operate, highly intelligent, and excellent in user experience. Through cooperation of components such as an NFC chip, an NFC key, a material level sensor and a temperature sensor, intelligent control of the door handle is realized. The use of fan, vortex tube and other actuators can quickly and effectively realize the ice removal and cooling functions, and improve the comfort and safety of vehicle use. At the same time, through the preset and control of the vehicle-mounted central controller, the operation is more convenient, and the system stability and reliability are enhanced. In addition, the optimized control mechanism design and use method make the opening and closing of the door handle more flexible, and can be intelligently adjusted according to the ambient temperature, further improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0025] Brief description of the content expressed by each drawing of the specification and the marks in the drawings is made:

[0026] Figure 1 It is a structural schematic diagram of example one;

[0027] Figure 2 It is a control mechanism structural schematic diagram of example one;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of example one;

[0029] Figure 4 It is a principle schematic diagram of example two, example three and example four;

[0030] In the figure: 1 is an NFC chip; 2 is a material level sensor; 3 is a temperature sensor; 4 is a door handle; 5 is a sealing frame; 51 is a through hole; 52 is an air inlet; 53 is an air outlet; 54 is an air flow channel; 6 is a control mechanism; 61 is a bracket; 62 is a frame body; 63 is a motor; 64 is an output gear; 65 is a transmission gear; 66 is a transmission shaft; 67 is a threaded screw rod; 68 is a threaded sleeve; 69 is an adjusting plate; 610 is a connecting arm; 611 is a fixed support; 7 is an actuator; 71 is a fan; 711 is an air inlet; 72 is a vortex tube; 721 is an air inlet pipe; 722 is a hot air outlet pipe; 723 is a cold air outlet pipe; 73 is a two-position four-way electromagnetic reversing valve; 731 is an air inlet; 732 is an air outlet. DETAILED DESCRIPTION

[0031] The present application will be further described in conjunction with the following non-limiting examples and accompanying drawings. However, it should be understood that these descriptions are only examples and are not intended to limit the scope of the present application. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0032] Example one

[0033] As shown in Figure 1 , 2 , 3, the automobile hidden door handle structure with deicing and cooling functions comprises an NFC chip 1, an NFC key matched with the NFC chip 1, a level sensor 2 for sensing the opening and closing of the door handle 4, a temperature sensor 3, the door handle 4, a sealing frame 5 arranged on the door and embedded with the door handle 4, a control mechanism 6 for controlling the opening and closing of the door handle 4, and an execution mechanism 7 for cooling or deicing the door handle 4. The NFC chip 1 is arranged on the door handle 4 or the B pillar of the automobile, and can also be arranged around the door handle 4 of the automobile.

[0034] The control mechanism 6 comprises a bracket 61 arranged in the door, a frame body 62 fixed on the bracket 61, a motor 63 arranged in the frame body 62, an output gear 64, a transmission gear 65 matched with the output gear 64, a transmission shaft 66, a threaded lead screw 67, a threaded sleeve 68, an adjusting plate 69, a connecting arm 610, and a fixed support 611. The output gear 64 is arranged on the output shaft of the motor 63, and the free end of the output shaft of the motor 63 is movably arranged on the frame body 62. The threaded lead screw 67 is integrally arranged with the transmission shaft 66 and arranged at one end of the transmission shaft 66, and the other end of the transmission shaft 66 is movably connected to the frame body 62. The threaded lead screw 67 is connected to one end of the threaded sleeve 68 passing through the frame body 62 through thread cooperation, and the other end of the threaded sleeve 68 is provided with a bearing bracket. One side of the adjusting plate 69 is hingedly connected to the bearing bracket, the other side of the adjusting plate 69 is fixedly connected to one end of the connecting arm 610, and the other end of the connecting arm 610 is fixedly connected to the inner side of the door handle. The fixed support 611 is fixedly arranged on the door and located at the inner end of the door handle 4, and the fixed support 611 is connected to the adjusting plate 69 through a movable frame bearing. The output gear 64 is driven to rotate by the motor 63, the transmission gear 65 is driven to rotate by the output gear 64, the transmission shaft 66 is driven to rotate by the transmission gear 65, the threaded lead screw 67 rotates with the transmission shaft 66, the threaded sleeve 68 moves axially relative to the threaded lead screw 67, the threaded sleeve 68 drives the adjusting plate 69 to rotate relative to the fixed support 611, and the connecting arm 610 and the door handle 4 rotate with the adjusting plate 69.

[0035] The execution mechanism 7 comprises a fan 71, a vortex tube 72, a two-position four-way electromagnetic reversing valve 73, and a plurality of connecting pipelines.

[0036] The sealing frame 5 is a ring frame structure, a through hole 51 for accommodating the door handle 4 is arranged in the middle of the sealing frame 5, an air flow channel 54 is arranged on the inner side of the ring of the sealing frame 5, the air flow channel 54 is arranged along the inner wall of the ring, the air flow channel 54 has an air inlet 52 and an air outlet 53, and the air inlet 52 and the air outlet 53 on the air flow channel 54 are symmetrically arranged on the two sides of the air flow channel 54.

[0037] The vortex tube 72 comprises an air inlet pipe 721, a hot air outlet pipe 722 and a cold air outlet pipe 723; the air outlet of the fan 71 is communicated with the air inlet pipe 721 of the vortex tube 72; the two-position four-way electromagnetic reversing valve 73 comprises two air inlets 731 and two air outlets 732, the hot air outlet pipe 722 and the cold air outlet pipe 723 are respectively communicated with the two air inlets 731 of the two-position four-way electromagnetic reversing valve 73, one of the two air outlets 732 of the two-position four-way electromagnetic reversing valve 73 is communicated with the air inlet 52 of the air flow channel 54, and the other air outlet 732 is communicated with the outside space of the vehicle body through a pipeline; the air inlet 711 of the fan 71 is communicated with the inside space of the vehicle body through a pipeline, and the air outlet 53 of the air flow channel 54 is communicated with the inside space of the vehicle body through a pipeline; the fan 71 and the vortex tube 72 are arranged in the hollow interlayer of the door.

[0038] The NFC chip 1 is electrically connected with the vehicle-mounted central controller, the level sensor 2 is electrically connected with the vehicle-mounted central controller, and the fan 71 is electrically connected with the vehicle-mounted central controller; the temperature sensor 3 is arranged on the door handle and is electrically connected with the vehicle-mounted central controller.

[0039] The two-position four-way electromagnetic reversing valve 73 is controlled to reverse by the vehicle-mounted central controller; when the door handle 4 is deiced, the hot air outlet pipe 722 of the vortex tube 72 is communicated with the air inlet 52 of the sealing frame 5 through the two-position four-way electromagnetic reversing valve 73; when the door handle 4 is cooled, the cold air outlet pipe 723 of the vortex tube 72 is communicated with the air inlet 52 of the sealing frame 5 through the two-position four-way electromagnetic reversing valve 73.

[0040] The two-position four-way electromagnetic reversing valve 73 is communicated with the outside space of the vehicle body through a pipeline, and the air outlet 732 is connected with the air outlet of the automobile air conditioner; when the gas discharged through the pipeline needs to be discharged through the automobile air conditioner exhaust pipe, it can be understood that the vehicle-mounted central controller needs to open the external circulation of the air conditioner. When the fan 71 is started, the vehicle-mounted central controller is in the state of opening the external circulation of the automobile air conditioner, and it can be understood that when the air pressure in the vehicle changes, the air pressure in the vehicle can be balanced by opening the external circulation of the air conditioner.

[0041] Example two

[0042] The use method of the automobile hidden door handle structure with deicing and cooling functions is as shown in Figure 1 When it is in spring and autumn season, since the temperature is suitable, the ambient temperature does not affect the opening and closing of the automobile hidden door handle 4, and the vehicle-mounted central controller is adjusted to the "no mode" state, only the NFC key needs to be close to the NFC chip 1 for sensing, the vehicle is powered on, and the vehicle-mounted central controller is started, at this time, the temperature sensor 3 is not detected by the vehicle-mounted controller, and then the door handle 4 is opened by the vehicle-mounted controller.

[0043] Example three

[0044] When the car is in a high-temperature environment in summer, the door handle 4 is often directly exposed to sunlight in some areas, and the temperature of the door handle 4 is very high. It is necessary to cool the door handle 4. The specific processing steps are as follows:

[0045] St1, preset in the vehicle-mounted central controller to detect the temperature by the temperature sensor 3, the temperature sensor 3 detects the temperature around the door handle 4, and adjusts the vehicle-mounted central controller to the "summer door handle 4 cooling mode";

[0046] St2, preset in the vehicle-mounted central controller to open the high-temperature threshold of the fan 71 as (30℃, +∞);

[0047] St3, the NFC key is close to the NFC chip 1 induction, the vehicle is powered on, and the vehicle-mounted central controller is started;

[0048] St4, when the detected temperature is lower than the minimum value of the high-temperature threshold, the door handle 4 is opened by the vehicle-mounted central controller controlling the control mechanism 6; when the detected temperature is higher than the minimum value of the high-temperature threshold, the fan 71 is started by the vehicle-mounted central controller, and the two-position four-way electromagnetic reversing valve 73 is controlled by the vehicle-mounted central controller to make the cold air outlet pipe 723 of the vortex tube 72 and the air inlet 52 of the air flow channel 54 conductive, and the cold air is introduced into the air flow channel 54 through the vortex tube 72 to cool the door handle 4, and the gas introduced into the air flow channel 54 is discharged into the vehicle body through the air outlet 53 of the air flow channel 54, when the temperature sensor 3 detects that the temperature around the door handle 4 is lower than the minimum value of the high-temperature threshold, the fan 71 is closed by the vehicle-mounted central controller, and the vortex tube 72 stops refrigeration, then the door handle 4 is opened by the vehicle-mounted central controller controlling the control mechanism 6.

[0049] Example four

[0050] When the car is in a low-temperature environment in winter, the door handle 4 is often in an ice state in some cold areas, and the door handle 4 is not easy to open. It is necessary to heat the door handle 4. The specific processing steps are as follows:

[0051] Stp1, preset in the vehicle-mounted central controller to detect the temperature by the temperature sensor 3, the temperature sensor 3 detects the temperature around the door handle 4, and adjusts the vehicle-mounted central controller to the "winter door handle 4 heating mode";

[0052] Stp2, preset in the vehicle-mounted central controller to open the low-temperature threshold of the fan 71 as (-∞, 0℃);

[0053] Stp3, the NFC key is close to the NFC chip 1 induction, the vehicle is powered on, and the vehicle-mounted central controller is started;

[0054] Stp4, when the detection temperature is lower than the highest value of the low temperature threshold, then the fan 71 is started by the vehicle-mounted control device, and the vehicle-mounted control device controls the two-position four-way electromagnetic reversing valve 73 to make the hot air outlet pipe 722 of the vortex tube 72 conduct with the air inlet 52 of the air flow channel 54, and the hot air is introduced into the air flow channel 54 through the vortex tube 72 to heat and deice the door handle 4, and the gas introduced into the air flow channel 54 is discharged into the vehicle body through the air outlet 53 of the air flow channel 54, and the vehicle-mounted control device opens the door handle 4 once at an interval of 5-10s, and when the door handle 4 is opened by the object level sensor 2, the fan 71 is closed by the vehicle-mounted control device, and the vortex tube 72 stops heating.

[0055] When the door handle 4 is not opened in any of the above embodiment two, embodiment three and embodiment four, the temperature around the door handle 4 is detected by the vehicle-mounted control device through the temperature sensor 3; when the detection temperature is between the lowest value of the high temperature threshold and the highest value of the low temperature threshold, if the door handle 4 is not opened, a fault alarm is sent;

[0056] In the description of the present application, it should be understood that, if the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first", "second" and the like appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0057] In the description of the present application, it should be noted that, unless otherwise specified and limited, if the terms "mounting", "connecting", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A concealed door handle structure for automobiles with de-icing and cooling functions, characterized in that, Includes an NFC chip (1), an NFC key that is matched and sensed with the NFC chip (1), a level sensor (2) for sensing the opening and closing of the door handle (4), a temperature sensor (3), a door handle (4), a sealing frame (5) fitted on the door to fit the door handle (4), a control mechanism (6) for controlling the opening and closing of the door handle (4), and an actuator (7) for cooling or de-icing the door handle (4). The actuator (7) includes a fan (71), a vortex tube (72), a two-position four-way solenoid directional valve (73), and several connecting pipes; The sealing frame (5) is an annular frame structure. The sealing frame (5) has a through hole (51) in the middle to accommodate the door handle (4). An air flow channel (54) is provided on the inner side of the annular sealing frame (5). The air flow channel (54) is arranged around the inner wall of the annular ring. The air flow channel (54) has an air inlet (52) and an air outlet (53). The vortex tube (72) includes an air inlet pipe (721), a hot air outlet pipe (722), and a cold air outlet pipe (723); the exhaust port of the fan (71) is connected to the air inlet pipe (721) of the vortex tube (72); the two-position four-way electromagnetic reversing valve (73) includes two air inlets (731) and two air outlets (732), and the hot air outlet pipe (722) and the cold air outlet pipe (723) are respectively connected to the two-position four-way electromagnetic reversing valve (721). 3) The two air inlets (731) are connected, and one of the air outlets (732) of the two-position four-way electromagnetic reversing valve (73) is connected to the air inlet (52) of the air flow channel (54), and the other air outlet (732) is connected to the external space of the vehicle body through a pipe; the air inlet (711) of the fan (71) is connected to the internal space of the vehicle body through a pipe, and the air outlet (53) of the air flow channel (54) is connected to the internal space of the vehicle body through a pipe; The NFC chip (1) is electrically connected to the vehicle central control unit, the level sensor (2) is electrically connected to the vehicle central control unit, the fan (71) is electrically connected to the vehicle central control unit; the temperature sensor (3) is installed on the door handle and electrically connected to the vehicle central control unit. The two-position four-way solenoid valve (73) is controlled by the vehicle central control unit to switch directions; when the door handle (4) is de-iced, the hot air outlet pipe (722) of the vortex tube (72) is connected to the air inlet (52) of the sealing frame (5) through the two-position four-way solenoid valve (73); when the door handle (4) is cooled down, the cold air outlet pipe (723) of the vortex tube (72) is connected to the air inlet (52) of the sealing frame (5) through the two-position four-way solenoid valve (73).

2. The concealed door handle structure for automobiles as described in claim 1, characterized in that, The control mechanism (6) includes a bracket (61) installed inside the car door, a frame (62) fixed on the bracket (61), a motor (63) installed inside the frame (62), an output gear (64), a transmission gear (65) cooperating with the output gear (64), a transmission shaft (66), a threaded screw (67), a threaded sleeve (68), an adjusting plate (69), a connecting arm (610), and a fixed support (611); the output gear (64) is installed on the output shaft of the motor (63), and the free end of the output shaft of the motor (63) is movably installed on the frame (62); the threaded screw (67) is integrally installed with the transmission shaft (66) and installed at one end of the transmission shaft (66), and the other end of the transmission shaft (66) is movably connected to the frame (62); the threaded screw (67) and one end of the threaded sleeve (68) passing through the frame (62) are connected to each other by threads; the threaded sleeve (68) The other end is provided with a bearing bracket; one side of the adjusting plate (69) is hinged to the bearing bracket, and the other side of the adjusting plate (69) is fixedly connected to one end of the connecting arm (610), and the other end of the connecting arm (610) is fixedly connected to the inside of the door handle; the fixed support (611) is fixedly installed on the car door and located at the inner end of the door handle (4), and the fixed support (611) is connected to the adjusting plate (69) through the movable frame bearing; the output gear (64) is driven to rotate by the motor (63), the output gear (64) drives the transmission gear (65) to rotate, the transmission gear (65) drives the transmission shaft (66) to rotate, the threaded screw (67) rotates with the transmission shaft (66), the threaded sleeve (68) moves axially relative to the threaded screw (67), the threaded sleeve (68) drives the adjusting plate (69) to rotate relative to the fixed support (611), and the connecting arm (610) and the door handle (4) rotate with the adjusting plate (69).

3. The concealed door handle structure for automobiles with de-icing and cooling functions as described in claim 1, characterized in that, The air inlet (52) and air outlet (53) on the air flow channel (54) are symmetrically arranged on both sides of the air flow channel (54).

4. The concealed door handle structure for automobiles with de-icing and cooling functions as described in claim 1, characterized in that, The fan (71) and the vortex tube (72) are both located in the hollow interlayer of the car door.

5. The concealed door handle structure for automobiles with de-icing and cooling functions as described in claim 1, characterized in that, The NFC chip (1) is installed on the door handle (4) or the B-pillar of the car.

6. The concealed door handle structure for automobiles with de-icing and cooling functions as described in claim 1, characterized in that, The two-position four-way electromagnetic reversing valve (73) is connected to the air outlet (732) of the vehicle's external space via a pipe and is connected to the vehicle's air conditioning exhaust port.

7. The method of using the concealed door handle structure for automobiles according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Pre-set the high temperature threshold and low temperature threshold for turning on the fan (71) in the vehicle central control unit; S2. When the NFC key is brought close to the NFC chip (1), the vehicle is powered on and the vehicle central control unit is started. S3. If the temperature is not detected by the temperature sensor (3) in the vehicle central controller, the door handle (4) is opened by controlling the control mechanism (6) through the vehicle central controller. S4. If the temperature sensor (3) is not preset to not detect temperature in the vehicle central controller, the temperature sensor (3) detects the temperature around the door handle (4); when the detected temperature is lower than the minimum value of the high temperature threshold, the control mechanism (6) is controlled by the vehicle central controller to open the door handle (4), and the door handle (4) is opened; when the detected temperature is higher than the minimum value of the high temperature threshold, the fan (71) is started by the vehicle central controller, and at the same time the vehicle central controller controls the two-position four-way solenoid reversing valve (73) to make the cold air outlet pipe (723) of the vortex tube (72) and the air flow channel (5) open. 4) The air inlet (52) is open, and cold air is introduced into the air channel (54) through the vortex tube (72) to cool the door handle (4). At the same time, the gas introduced into the air channel (54) is discharged into the vehicle body through the air outlet (53) of the air channel (54). When the temperature sensor (3) detects that the temperature around the door handle (4) is lower than the minimum value of the high temperature threshold, the vehicle central controller turns off the fan (71), the vortex tube (72) stops cooling, and then the control mechanism (6) is controlled by the vehicle central controller to open the door handle (4). S5. If the door handle (4) is not opened during either step S3 or S4, the vehicle central controller detects the temperature around the door handle (4) through the temperature sensor (3). If the detected temperature is between the minimum value of the high temperature threshold and the maximum value of the low temperature threshold, a fault alarm is sent if the door handle (4) is not opened. If the detected temperature is lower than the maximum value of the low temperature threshold, the vehicle central controller starts the fan (71), and at the same time, the vehicle central controller controls the two-position four-way solenoid reversing valve (73) to make the hot air of the vortex tube (72) exit the air duct. (722) is connected to the air inlet (52) of the air flow channel (54) and hot air is introduced into the air flow channel (54) through the vortex tube (72) to heat and de-ice the door handle (4). At the same time, the gas introduced into the air flow channel (54) is discharged into the vehicle body through the air outlet (53) of the air flow channel (54). The vehicle central control unit opens the door handle (4) once at intervals. When the level sensor (2) detects that the door handle (4) is open, the vehicle central control unit turns off the fan (71) and the vortex tube (72) stops heating.

8. The method of using the concealed door handle structure of an automobile as described in claim 7, characterized in that, The minimum value of the high temperature threshold is 30°C.

9. The method of using the concealed door handle structure of an automobile as described in claim 7, characterized in that, The highest value of the low temperature threshold is 0℃.

10. The method of using the concealed door handle structure of a car as described in claim 7, characterized in that, In step S5, the interval timing time is 5-10 seconds.

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